CN108079929B - Resin production system - Google Patents
Resin production system Download PDFInfo
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- CN108079929B CN108079929B CN201810095158.XA CN201810095158A CN108079929B CN 108079929 B CN108079929 B CN 108079929B CN 201810095158 A CN201810095158 A CN 201810095158A CN 108079929 B CN108079929 B CN 108079929B
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- condenser
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- 239000011347 resin Substances 0.000 title claims abstract description 27
- 229920005989 resin Polymers 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 33
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 22
- 239000000498 cooling water Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract description 96
- 230000000694 effects Effects 0.000 abstract description 13
- 238000001816 cooling Methods 0.000 abstract description 10
- 238000009833 condensation Methods 0.000 abstract description 7
- 230000005494 condensation Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000002309 gasification Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention provides a resin production system which comprises a polymerization reaction kettle, a vertical condenser, a horizontal condenser and a buffer recovery tank, wherein a feed inlet and an air outlet are formed in the polymerization reaction kettle, the air outlet is communicated with a tube side inlet of the vertical condenser, a tube side outlet of the vertical condenser is communicated with a tube side inlet of the horizontal condenser, a tube side outlet of the horizontal condenser is communicated with an inlet of the buffer recovery tank, and an outlet of the buffer recovery tank is communicated with the air outlet. According to the invention, through the cooperation of the vertical condenser and the horizontal condenser, the condensation effect of ethyl acetate gas is ensured, and the whole system is formed into a closed loop through the buffer recovery tank, so that the closed loop is not subjected to the high-temperature gasification of ethyl acetate, the cooling time is shortened, the system power consumption and the energy consumption are reduced, the machine abrasion is reduced, namely the production cost is reduced, part of uncondensed ethyl acetate gas is recovered through the buffer recovery tank, the atmosphere is not discharged, and the environmental protection pressure is reduced.
Description
Technical Field
The invention relates to the technical field of chemical production, in particular to a resin production system.
Background
The traditional resin production system consists of a polymerization reaction kettle and a vertical water cooler, the semi-finished product resin with the temperature of about 300 ℃ is stirred and cooled in the polymerization reaction kettle, and the ethyl acetate solvent has a low boiling point of 77 ℃ only, so that gasification after the ethyl acetate contacts with the high-temperature semi-finished product resin is not avoided, the addition of the ethyl acetate is carried out only when the temperature of the semi-finished product resin is reduced to below 80 ℃, and the polyesterification reaction is completed after the ethyl acetate is added. The water cooler is used for condensing ethyl acetate gas generated by the polymerization reaction kettle in a cohesive esterification reaction into liquid and then sending the liquid back to the polymerization reaction kettle, only one traditional water cooler has insufficient condensation effect, and a small amount of uncondensed ethyl acetate gas is discharged to the atmosphere, so that pollution is caused; the temperature of the polymerization reaction kettle is reduced by water cooling, the semi-finished resin is slowly reduced due to high viscosity, the lower the temperature is, the longer the temperature reduction time is, the semi-finished resin needs 1 to 1.5 hours from 136 ℃ to 120 ℃, the semi-finished resin needs 2.5 to 3.5 hours from 120 ℃ to 100 ℃, the semi-finished resin needs 8 hours or even longer from 120 ℃ to 80 ℃, the longer the temperature reduction time is, the longer the stirring time is, the energy consumption and the abrasion of the machine are greatly increased, and the energy conservation and the maintenance of equipment are not facilitated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a resin production system, which solves the problems of long cooling time, high energy consumption, machine abrasion, environmental pollution and poor condensation effect of the traditional resin production system.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a resin production system, includes polymerization vessel, vertical condenser, horizontal condenser, buffering recovery tank, vertical condenser, horizontal condenser are tubular water cooler, vertical condenser, horizontal condenser's tube side supplies to wait the coolant circulation, vertical condenser, horizontal condenser's shell side supplies the cooling water circulation, establish feed inlet, gas outlet on the polymerization vessel, gas outlet intercommunication vertical condenser's tube side import, vertical condenser's tube side export intercommunication horizontal condenser's tube side import, horizontal condenser's tube side export intercommunication buffering recovery tank's import, buffering recovery tank's export intercommunication gas outlet.
Further, the water separator is further arranged, a tube side outlet of the horizontal condenser is communicated with an inlet of the water separator, and an outlet of the water separator is communicated with an inlet of the buffer recovery tank.
Further, the polymerization reaction kettle comprises a body, a motor, a rotating shaft, a feed inlet, an air outlet and a motor, wherein the top of the body is arranged, the rotating shaft is of a hollow structure, the top end of the rotating shaft is connected to the output end of the motor, the bottom end of the rotating shaft penetrates through the top of the body and extends towards the inside of the body, four through holes are circumferentially and uniformly distributed in the rotating shaft inside the body, an outlet and a positioning ring are arranged on the rotating shaft outside the body, four stirring blades are circumferentially and uniformly hinged to the bottom end of the rotating shaft, steel ropes are arranged on each stirring blade, the four steel ropes are respectively connected to an adjusting rope in the rotating shaft through corresponding through holes, one end of the adjusting rope is connected to the junction of the four steel ropes, and the other end of the adjusting rope extends upwards and penetrates out of the outlet and then is connected to the positioning ring.
Further, the polymerization reaction kettle comprises a body, the feed inlet, the gas outlet are all located at the top of the body, establish the inlet pipe on the feed inlet, establish the lid that is used for shielding the inlet pipe on the inlet pipe, still include the switching device that the control lid opened and shut, switching device includes the mounting panel, rotate on the mounting panel and set up the driving gear, the driven gear with it meshing is established separately to driving gear both sides, establishes the sector gear that follows the driven gear pivoted on the driven gear, establishes the carriage release lever between two sector gears, establish the rack of cooperation sector gear in carriage release lever both sides, when one sector gear and the rack meshing that corresponds, another sector gear breaks away from with the rack that corresponds, control the carriage release lever in the sleeve through sector gear cooperation rack, the carriage release lever passes through the connecting rod and controls the lid and reciprocates about the inlet pipe.
Further, a guide rod is arranged at the bottom of the moving rod, a guide rail matched with the guide rod is arranged in the sleeve, and the guide rod is inserted into the sleeve and moves on the guide rail.
Further, the inner wall of the body is provided with a plate-shaped structure made of elastic materials.
Further, the horizontal condenser comprises a cylindrical shell, tube plates are respectively arranged at two ends of the shell, a baffle plate is arranged on the inner wall of the shell, heat exchange tubes which are connected with the two tube plates and penetrate through the baffle plate are horizontally arranged between the two tube plates, the two ends of the shell are sealed through sealing heads, a tube side inlet and a tube side outlet of the horizontal condenser are respectively arranged on the two sealing heads, a shell side inlet and a shell side outlet of the horizontal condenser are arranged on the shell, an annular groove is formed in the outer wall of the heat exchange tube, a turbulence device is rotatably arranged in the annular groove, the turbulence device comprises a ring body rotating in the annular groove, four turbulence sheets are uniformly distributed on the ring body in the circumferential direction, each turbulence sheet comprises a first inclined section connected to the outer side wall of the ring body and inclined along the flowing direction of cooling water, and a second inclined section connected to the first inclined section, and the angle alpha formed by the first inclined section and the second inclined section is an obtuse angle.
Further, the buffer recovery tank comprises a tank body, a primary inlet is formed in the top of the tank body, a secondary inlet is formed in the upper portion of the tank body, a tube side outlet of the horizontal condenser is communicated with the secondary inlet of the buffer recovery tank, a liquid blocking device is arranged in the tank body at the upper side of the secondary inlet, the liquid blocking device comprises a support which is in a conical shape, the support is connected to the top wall of the tank body through a connecting seat, a quadrangular pyramid-shaped liquid dropping piece is arranged on the bottom surface of the support, and the bottom surface of the liquid dropping piece is connected to the bottom surface of the support.
Further, the connecting seat is rotatably connected to the top wall of the tank body.
Further, a tail gas pipe is arranged at the top of the tank body.
Compared with the prior art, the invention has the following beneficial effects:
(1) the vertical condenser is connected with the horizontal condenser, so that a condensing path is increased, and the condensing effect is ensured;
(2) the gasified and condensed ethyl acetate gas and liquid mixture is recovered by the buffer recovery tank, so that the discharge is not needed, and the environmental protection effect is ensured;
(3) the medium treated by the vertical condenser and the horizontal condenser is recycled by the buffer recycling tank, so that the addition of ethyl acetate is not needed to be carried out after the semi-finished resin is stirred and cooled to below 80 ℃, gasified ethyl acetate gas is cooled by the vertical condenser and the horizontal condenser for two sections and then is sent to the buffer recycling tank for circulation, the cooling time is shortened, the energy consumption is reduced, and the practical life of equipment is prolonged;
(4) the buffer recovery tank can be added with solvent ethyl acetate in advance, and the normal-temperature ethyl acetate is added into the polymerization reaction kettle so as to reduce the temperature in the polymerization reaction kettle, thereby reducing the cooling time again and reducing the energy consumption;
(5) the water knockout drum takes away the water in the solvent after the two sections of the vertical condenser and the horizontal condenser are cooled, so that the concentration of the solvent is ensured, and the polyester effect is better;
(6) the medium in the main body is stirred by the polymerization reaction kettle, and the four steel ropes are controlled by the regulating ropes so as to control the four stirring blades to swing up and down about the rotating shaft, so that the stirring range of the stirring blades is regulated, and a better stirring effect is achieved;
(7) the sector gear drives the movable rod to move up and down, so that the cover body is controlled to be opened and closed, feeding is convenient, manual cover opening is not needed, labor is saved, and safety accidents are avoided;
(8) when one sector gear is meshed with the corresponding rack, the other sector gear is separated from the corresponding rack, namely, the two sector gears respectively control the up-and-down movement of the moving rod, the moving track is clear, the stroke of the moving rod is fixed, and the opening and closing state of the cover body is stable;
(9) the stirring effect is better due to the medium nearby the rebound of the plate-shaped structure, and the polyesterification reaction effect is better;
the flow direction of the cooling water is changed by the turbulence device and the baffle plate, so that the flow time of the cooling water in a shell pass is prolonged as much as possible, the heat exchange time is prolonged, the heat exchange efficiency is improved, and the condensation effect is ensured;
the cooling water contacts the four spoilers and then drives the torus to rotate in the annular groove, namely the four spoilers rotate in the cooling water to disturb the flow direction of the cooling water, so that the flowing time of the cooling water in the shell pass is prolonged, and the condensing effect of the horizontal condenser is better;
the first inclined section inclines along the flowing direction of cooling water, the angle alpha formed by the first inclined section and the second inclined section is an obtuse angle, namely the cooling water is blocked by the second inclined section after contacting the first inclined section, the flowing time of the cooling water in a shell side is prolonged again, and the angle alpha formed by the first inclined section and the second inclined section is more than 90 degrees and less than 180 degrees, so that the second inclined section can not block the cooling water to greatly block the flowing of the cooling water, and can change the flowing direction of the cooling water after the cooling water is changed from the first inclined section, and the flowing time is prolonged without blocking the normal flowing of the cooling water;
the primary inlet of the buffer recovery tank is used for adding fresh ethyl acetate, and the secondary inlet is used for receiving the cooled vinegar from the horizontal condenserThe ethyl acetate circulates, the work division and the cooperation are carried out, and the processes are not mutually crossed and influenced;
the liquid blocking device stops the ethyl acetate partially gasified in the buffer recovery tank, the ethyl acetate is aggregated on the quadrangular conical liquid dropping piece and drops, and the ethyl acetate cannot be attached to the top wall of the tank body in a large area, so that the later maintenance of the tank body is facilitated;
the support is conical, and the support rotationally connects in jar body roof, when adding fresh ethyl acetate through once import, and the support atress is rotatable, has avoided the support single point to last atress when adding fresh ethyl acetate and has led to the fact the damage, has prolonged the life of equipment.
In summary, the invention ensures the condensation effect of the ethyl acetate gas by the cooperation of the vertical condenser and the horizontal condenser, and forms a closed loop by the buffer recovery tank, thereby avoiding the limitation of high-temperature gasification of the ethyl acetate, shortening the cooling time, reducing the power consumption and the energy consumption of the system, reducing the machine abrasion, namely reducing the production cost, and recovering part of uncondensed ethyl acetate gas by the buffer recovery tank, avoiding the discharge of the atmosphere and reducing the environmental protection pressure.
Drawings
FIG. 1 is a schematic diagram of a resin production system according to the present invention.
FIG. 2 is a schematic diagram showing the internal structure of the polymerization reactor of the present invention.
FIG. 3 is a schematic view showing the assembly of the rotating shaft and the stirring blade according to the present invention.
Fig. 4 is a schematic view showing a structure in which a sector gear starts to mesh with a corresponding rack in the switchgear of the present invention.
Fig. 5 is a schematic diagram of a structure in which a sector gear and a corresponding rack gear are completely engaged in the switchgear of the present invention.
Fig. 6 is a schematic structural view of the horizontal condenser of the present invention.
Fig. 7 is a schematic structural view of a heat exchange tube according to the present invention.
Fig. 8 is a cross-sectional view of the spoiler of the invention.
Fig. 9 is a schematic structural view of a spoiler of the present invention.
FIG. 10 is a schematic diagram of the structure of the buffer recovery tank of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-10, a resin production system comprises a polymerization reaction kettle 1, a vertical condenser 2, a horizontal condenser 3, a buffer recovery tank 4 and a water separator 5, wherein the vertical condenser 2 and the horizontal condenser 3 are tubular water coolers, the tube passes of the vertical condenser 2 and the horizontal condenser 3 are used for circulating a medium to be cooled, and the shell passes of the vertical condenser 2 and the horizontal condenser 3 are used for circulating cooling water.
The polymerization reaction kettle 1 is provided with a feed inlet and an air outlet 1a, the air outlet 1a is communicated with a tube side inlet of the vertical condenser 2, a tube side outlet of the vertical condenser 2 is communicated with a tube side inlet of the horizontal condenser 3, a tube side outlet of the horizontal condenser 3 is communicated with an inlet of the water separator 5, an outlet of the water separator 5 is communicated with an inlet of the buffer recovery tank 4, and an outlet of the buffer recovery tank 4 is communicated with the air outlet 1a.
Referring to fig. 2-3, the polymerization reaction kettle 1 comprises a body 1b, a motor 1c, a rotating shaft 1d, a feed inlet, an air outlet 1a and a motor 1c all arranged at the top of the body 1b, wherein the rotating shaft 1d is of a hollow structure, the top end of the rotating shaft 1d is connected with the output end of the motor 1c, the bottom end of the rotating shaft 1d penetrates through the top of the body 1b and then extends towards the inside of the body 1b, four through holes 1e are circumferentially and uniformly distributed on the rotating shaft 1d in the body 1b, an outlet and a positioning ring 1f are arranged on the rotating shaft 1d outside the body 1b, four stirring blades 1g are circumferentially and uniformly hinged at the bottom end of the rotating shaft 1d, steel ropes 1h are arranged on each stirring blade 1g, the four steel ropes 1h are respectively connected with an adjusting rope 1i arranged in the rotating shaft 1d through corresponding through holes 1e, one end of each adjusting rope 1i is connected with the junction of the four steel ropes 1h, the other end of each adjusting rope 1i extends upwards and penetrates out of the outlet and then is connected with the positioning ring 1f, and the inner wall of the body 1b is provided with a platy structure 1u made of elastic material.
Referring to fig. 1, 4 and 5, a feed pipe 1j is arranged on a feed port, a cover 1k for shielding the feed pipe 1j is arranged on the feed pipe 1j, and the device further comprises a switch device for controlling the cover 1k to open and close, the switch device comprises a mounting plate 1l arranged on the ground, a driving gear 1m is rotatably arranged on the mounting plate 1l, driven gears 1n meshed with the driving gear 1m are respectively arranged on two sides of the driving gear 1m, the driving gear 1m drives the driven gear 1n to rotate, a sector gear 1o rotating along with the driven gear 1n is arranged on the driven gear 1n, a moving rod 1p is arranged between the two sector gears 1o, racks 1q matched with the sector gears 1o are arranged on two sides of the moving rod 1p, when one sector gear 1o is meshed with the corresponding rack 1q, the other sector gear 1o is separated from the corresponding rack 1q, a moving rod 1p is controlled to move up and down in a sleeve 1r through the cooperation with the racks 1q, in this embodiment, a guide rod 1t is arranged at the bottom of the moving rod 1p, a guide rod 1t is arranged in the sleeve 1r, a guide rod 1t is inserted into the guide rod 1t and moves on the guide rod 1k through the guide rod 1 s.
In the embodiment, the top and the bottom of the moving rod 1p are respectively provided with a clamping piece 1v with a right-angle triangle-shaped cross section, and the clamping pieces 1v are used for ensuring that the sector gear 1o can smoothly contact when the sector gear 1o rotates to contact with the corresponding rack 1q so as to prevent the sector gear 1o from sliding out, thereby ensuring that the moving rod 1p can be controlled by the sector gear 1o to do vertical movement; and the four clamping pieces 1v which are symmetrically arranged can properly increase the weight of the movable rod 1p, so that the movable rod can run more stably.
Referring to fig. 6-9, the horizontal condenser 3 includes a cylindrical shell 3a, two ends of the shell 3a are separately provided with tube plates 3b, a baffle plate 3c is arranged on an inner wall of the shell 3a, a heat exchange tube 3d connected with the two tube plates 3b and penetrating the baffle plate 3c is horizontally arranged between the two tube plates 3b, two ends of the shell 3a are sealed by sealing heads 3e, a tube side inlet and a tube side outlet of the horizontal condenser 3 are separately provided on two sealing heads 3e, a shell side inlet and a shell side outlet of the horizontal condenser 3 are provided on the shell 3a, an annular groove 3f is arranged on an outer wall of the heat exchange tube 3d, a spoiler 6 is rotatably arranged in the annular groove 3f, four spoilers are circumferentially and uniformly distributed on the annular groove 3f, each spoiler comprises a first inclined section 6b connected to an outer side wall of the annular groove 6a and inclined along a cooling water flow direction, a second inclined section 6c connected to the first inclined section 6b and inclined along the cooling water flow direction, and the first inclined section 6b and the second inclined section 6c are obtuse.
Referring to fig. 10, the buffer recovery tank 4 includes a tank body 4a, a primary inlet 4b and a tail gas pipe 4g are provided at the top of the tank body 4a, a secondary inlet 4c is provided at the upper middle portion of the tank body 4a, a tube side outlet of the horizontal condenser 3 is communicated with the secondary inlet 4c of the buffer recovery tank 4, a liquid blocking device is provided in the tank body 4a at the upper side of the secondary inlet 4c, the liquid blocking device includes a conical support 4d rotatably provided at the top wall of the tank body 4a, the support 4d is rotatably connected to the top wall of the tank body 4a through the connection seat 4e, a quadrangular conical liquid dropping member 4f is provided at the bottom surface of the support 4d, and the bottom surface of the liquid dropping member 4f is connected to the bottom surface of the support 4 d. An annular liquid blocking ring 4h is arranged on the inner wall of the tank body 4a at the upper side of the support 4d, so that the phenomenon that the ethyl acetate which is partially gasified is not contacted with the liquid blocking device and is attached to the top wall of the tank body 4a after rising from the edge of the support 4d is avoided, and further, the trouble of cleaning and maintenance at the later stage is avoided.
The application method of the embodiment is as follows: adding 300-degree semi-finished resin into the polymerization reaction kettle 1 from a feed inlet, stirring and cooling, slowly adding fresh ethyl acetate into a tank body of a buffer recovery tank through a primary inlet after the temperature in the body is reduced to 120 degrees, and introducing the fresh ethyl acetate into the body through an air outlet for polyesterification reaction, so that the 8-hour time required for cooling the semi-finished resin from 120 ℃ to 80 ℃ is saved, the cooling time is shortened, the motor abrasion is reduced, and the cooling time is shortened; when fresh ethyl acetate is gasified after contacting with semi-finished resin, the gasified ethyl acetate gas is condensed by two sections of a vertical condenser and a horizontal condenser, and water is discharged in a water separator, so that the high-concentration recovered ethyl acetate is sent into a buffer recovery tank for circulation. The two-stage condensation of the vertical condenser and the horizontal condenser can ensure the condensation effect, and the condensed recovered ethyl acetate is sent into the buffer recovery tank to prevent the material from running; and fresh ethyl acetate is added into the buffer recovery tank while being stirred and cooled, so that the reasonable overall time is ensured.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. A resin production system, characterized in that: the device comprises a polymerization reaction kettle (1), a vertical condenser (2), a horizontal condenser (3) and a buffer recovery tank (4), wherein the vertical condenser (2) and the horizontal condenser (3) are tubular water coolers, a cooling medium to be cooled is supplied to the tube side of the vertical condenser (2) and the horizontal condenser (3) for circulation, a feed inlet and an air outlet (1 a) are formed in the polymerization reaction kettle (1), the air outlet (1 a) is communicated with the tube side inlet of the vertical condenser (2), the tube side outlet of the vertical condenser (2) is communicated with the tube side inlet of the horizontal condenser (3), the tube side outlet of the horizontal condenser (3) is communicated with the inlet of the buffer recovery tank (4), and the outlet of the buffer recovery tank (4) is communicated with the air outlet (1 a); the buffer recovery tank (4) comprises a tank body (4 a), a primary inlet (4 b) is formed in the top of the tank body (4 a), a secondary inlet (4 c) is formed in the middle upper portion of the tank body (4 a), a tube side outlet of the horizontal condenser (3) is communicated with the secondary inlet (4 c) of the buffer recovery tank (4), a liquid blocking device is arranged in the tank body (4 a) at the upper side of the secondary inlet (4 c), the liquid blocking device comprises a conical support (4 d), the support (4 d) is connected to the top wall of the tank body (4 a) through a connecting seat (4 e), a quadrangular conical liquid dropping piece (4 f) is arranged on the bottom surface of the support (4 d), and the bottom surface of the liquid dropping piece (4 f) is connected to the bottom surface of the support (4 d); the connecting seat (4 e) is rotatably connected to the top wall of the tank body (4 a); the top of the tank body (4 a) is provided with a tail gas pipe (4 g); the polymerization reaction kettle (1) comprises a body (1 b), a motor (1 c), a rotating shaft (1 d), a feed port, an air outlet (1 a) and a motor (1 c) are all arranged at the top of the body (1 b), the rotating shaft (1 d) is of a hollow structure, the top end of the rotating shaft (1 d) is connected with the output end of the motor (1 c), the bottom end of the rotating shaft (1 d) penetrates through the top of the body (1 b) and then extends towards the inside of the body (1 b), four through holes (1 e) are circumferentially and uniformly distributed in the rotating shaft (1 d) in the body (1 b), an outlet and a locating ring (1 f) are arranged on the rotating shaft (1 d) outside the body (1 b), four stirring blades (1 g) are circumferentially and uniformly hinged at the bottom end of the rotating shaft (1 d), steel ropes (1 h) are arranged on each stirring blade, one end of each steel rope (1 h) is connected with an adjusting rope (1 i) arranged in the rotating shaft (1 d) through the corresponding through hole, one end of each steel rope is connected with the junction (1 i) of the four steel ropes (1 h), and the other end of each steel rope is connected with the corresponding rope through the locating ring (1 i) and extends upwards after the wire outlet extends upwards.
2. A resin production system as set forth in claim 1, wherein: the water separator (5) is further included, the tube side outlet of the horizontal condenser (3) is communicated with the inlet of the water separator (5), and the outlet of the water separator (5) is communicated with the inlet of the buffer recovery tank (4).
3. A resin production system as set forth in claim 1, wherein: the feeding port is provided with a feeding pipe (1 j), the feeding pipe (1 j) is provided with a cover body (1 k) for shielding the feeding pipe (1 j), the feeding pipe further comprises a switch device for controlling the cover body (1 k) to open and close, the switch device comprises a mounting plate (1 l), a driving gear (1 m) is rotatably arranged on the mounting plate (1 l), driven gears (1 n) meshed with the driving gear (1 m) are respectively arranged on two sides of the driving gear (1 m), a sector gear (1 o) which follows the driving gear (1 n) to rotate is arranged on the driven gears (1 n), a moving rod (1 p) is arranged between the two sector gears (1 o), the bottom of the moving rod (1 p) is provided with a guide rod (1 t), two sides of the moving rod (1 p) are provided with racks (1 q) matched with the sector gears (1 o), when one sector gear (1 o) is meshed with the corresponding rack (1 q), the other sector gear (1 o) is separated from the corresponding rack (1 q), the guide rod (1 o) at the bottom of the moving rod (1 p) is controlled to move in the sleeve (1 t) through the sector gear (1 p), and the moving rod (1 p) is controlled to move in the feeding pipe (1 s).
4. A resin production system as claimed in claim 3, wherein: a guide rail matched with the guide rod (1 t) is arranged in the sleeve (1 r), and the guide rod (1 t) is inserted into the sleeve (1 r) and moves on the guide rail.
5. A resin production system as set forth in claim 1, wherein: the inner wall of the body (1 b) is provided with a plate-shaped structure (1 u) made of elastic materials.
6. A resin production system as set forth in claim 1, wherein: the horizontal condenser (3) comprises a cylindrical shell (3 a), tube plates (3 b) are respectively arranged at two ends of the shell (3 a), baffle plates (3 c) are arranged on the inner wall of the shell (3 a), heat exchange tubes (3 d) which are connected with the two tube plates (3 b) and penetrate through the baffle plates (3 c) are horizontally arranged between the two tube plates (3 b), two ends of the shell (3 a) are sealed through sealing heads (3 e), a tube side inlet and a tube side outlet of the horizontal condenser (3) are respectively arranged on the two sealing heads (3 e), a shell side inlet and a shell side outlet of the horizontal condenser (3) are arranged on the shell (3 a), annular grooves (3 f) are formed in the outer wall of the heat exchange tubes (3 d), vortex devices (6) are rotatably arranged in the annular grooves (3 f), four vortex plates are circumferentially and uniformly distributed on the vortex plates (6 a), each vortex plate comprises a first inclined section (6 b) which is connected to the outer side wall of the annular body (6 a) and is inclined along the cooling water flow direction, a second inclined section (6 b) is inclined section (6 c), and a second inclined section (6 c) is inclined section (alpha).
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| CN119455551B (en) * | 2024-12-12 | 2025-11-04 | 生态环境部南京环境科学研究所 | A co-treatment system for particulate matter and odor in the exhaust gas from the casting drying section |
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