RU2012108788A - METHOD FOR PRODUCING FIRST CRYSTALLIZATION MASSAGE - Google Patents

Abstract

A method of producing massecuite of the first crystallization, which involves collecting syrup into a vacuum apparatus, thickening it, planting crystals by introducing seed paste and then building them up in two stages by final thickening of the massecuite until ready for descent, characterized in that the vacuum apparatus is made with syrup with peeling CB = 50 ÷ 65%, followed by thickening until supersaturation П = 1.10 ÷ 1.12, maintaining this value throughout the massecuite boiling cycle, then a seed suspension containing a given number of crystal centers plants in the amount of (3.4 ÷ 3.5) · 10pcs in size (1.0 ÷ 1.1) · 10m, and the further crystal growth at the first stage is carried out first by feeding syrup with clearing CB = 50 ÷ 65% up to the specified moment time determined by regression equation (1), after which, at the second stage, crystallization is continued, pumping syrup with clearing CB = 68 ÷ 74% until the specified time for the end of the crystallization process, determined by regression equation (2), and the steam flow rate is determined by the equation ( 3) in the range of 4600 ÷ 13500 kg / h, and by the time of the end of the process cr In any case, the required mass of massecuite boiled in a vacuum apparatus reaches M = 59.0 ÷ 60.0 t and CB = 91.5 ÷ 92.5%.

Claims (1)

A method of producing massecuite of the first crystallization, which involves collecting syrup into a vacuum apparatus, thickening it, planting crystals by introducing seed paste and then building them up in two stages by final thickening of the massecuite until ready for descent, characterized in that the vacuum apparatus is made with syrup with peeling NE _cell = 50 ÷ 65%, followed by thickening until supersaturation P _per = 1.10 ÷ 1.12, maintaining this value throughout the massecuite boiling cycle, then a seed suspension containing a given number of cr centers is introduced initialization in the amount of (3.4 ÷ 3.5) · 10 ¹¹ pieces of size (1.0 ÷ 1.1) · 10 ^-5 m, and further crystal growth in the first stage is carried out first by supplying syrup with peeling CB _ck = 50 ÷ 65% to a predetermined point in time determined by the regression equation (1), after which at the second stage they continue to crystallize, pumping syrup with clearing SV _ck = 68 ÷ 74% until the specified time for the end of the crystallization process, determined by regression equation (2), and the steam flow rate is determined according to equation (3) in the range of 4600 ÷ 13500 kg / h, and by the time When the crystallization process starts, the required mass of massecuite boiled in the vacuum apparatus in any case reaches M _y = 59.0 ÷ 60.0 t and CB _y = 91.5 ÷ 92.5%. Equations $${\tau }_n=a_0-a_{\mathrm{one}}\cdot C{B}_{\mathrm{from}\mathrm{to}2}+a_2\cdot C{B}_{\mathrm{from}\mathrm{to}\mathrm{one}}\cdot C{B}_{\mathrm{from}\mathrm{to}2}-a_3\cdot C{B}_{\mathrm{from}\mathrm{to}\mathrm{one}}\cdot H_{\mathrm{from}\mathrm{to}}\left(\mathrm{one}\right)$$

$${\tau }_k=a_0+a_{\mathrm{one}}\cdot C{B}_{\mathrm{from}\mathrm{to}\mathrm{one}}-a_2\cdot C{B}_{{}_{\mathrm{from}\mathrm{to}\mathrm{one}}}^2+a_3\cdot C{B}_{\mathrm{from}\mathrm{to}2}-a_{\mathrm{four}}\cdot H_{\mathrm{from}\mathrm{to}}\left(2\right)$$

$$Q_n=a_0-a_{\mathrm{one}}\cdot C{B}_{{}_{\mathrm{from}\mathrm{to}\mathrm{one}}}^2-a_2\cdot H_{ck}+a_3\cdot H_{ck}^2+a_{\mathrm{four}}\cdot C{B}_{\mathrm{from}\mathrm{to}\mathrm{one}}\cdot C{B}_{\mathrm{from}\mathrm{to}2}-a_5\cdot C{B}_{\mathrm{from}\mathrm{to}\mathrm{one}}\cdot H_{\mathrm{from}\mathrm{to}}-a_6\cdot C{B}_{ck2}\cdot H_{ck}\left(3\right)$$