Three-effect concentration evaporator
A three-effect evaporator and three-effect concentration technology, applied in the direction of multi-effect evaporation, can solve the problems of unstable sulfonamide concentration control, solution boiling, foam generation, etc., and achieve the effects of reducing production costs, easy operation, and effective thermal energy.
Active Publication Date: 2012-01-04
SUZHOU WUGAN PHARMA
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Problems solved by technology
[0002] At present, it is used in the chemical industry to concentrate the concentration of the sulfonamide mother liquor after the sulfonamide chemical reaction. Generally, a simple evaporator is used in conjunction with a direct steam coil. The coil-type concentrated evaporator concentrates and evaporates the mother liquor. Due to the arrival of the heat transfer effect in some areas, a certain part may be overheated, causing the solution to boil, generate foam and flow out
Moreover, this operation is unstable to the concentrated sulfonamide concentration control, and the energy efficiency is low and the cost is high
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[0011] figure 1 A three-effect concentrating evaporator for evaporating and concentrating a sulfonamide solution, the main body is a mother liquor pool 1 and a hydrolysis pool 5, and the mother liquor pool 1 is connected to the upper end inlet of the first-effect evaporator 3-1 through a pump-2-1; the first-effect evaporation The outlet of the right end of the evaporator 3-1 is connected to the inlet of the left end of the second effect evaporator 3-2, the lower end outlet of the first effect evaporator 3-1 is connected to the inlet of the first effect separator 4-1; the outlet of the first effect separator 4-1 is connected to the pump two 2-2 , pump 2 is connected to the upper inlet of the second-effect evaporator 3-2; the right-hand outlet of the second-effect evaporator 3-2 is connected to the left-hand inlet of the third-effect evaporator 3-3, and the lower outlet of the second-effect evaporator 3-2 is connected to the second-effect separator 4 -2 inlet, 4-2 outlet of two...
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The invention relates to a three-effect concentration evaporator for the evaporation concentration of sulfanilamide solution. The evaporator is characterized in that: a main body is a mother liquid tank and a hydrolysis tank, wherein the mother liquid tank is connected with the upper end inlet of a one-effect evaporator through a pump 1; the right end outlet of the one-effect evaporator is connected with the left end inlet of a two-effect evaporator; the lower end outlet of the one-effect evaporator is connected with the inlet of a one-effect separator; the outlet of the one-effect separator is connected with a pump 2; the pump 2 is connected with the upper end inlet of the two-effect evaporator; the right end outlet of the two-effect evaporator is connected with the left end inlet of a three-effect evaporator; the lower end outlet of the two-effect evaporator is connected with the inlet of a two-effect separator; the outlet of the two-effect separator is connected with a pump 3; the pump 3 is connected with the upper end inlet of the three-effect evaporator; the right end outlet of the three-effect evaporator is connected with the hydrolysis tank; the lower end outlet of the three-effect evaporator is connected with a three-effect separator; the lower end left outlet of the three-effect separator is connected with a pump 4; the pump 4 is connected with the upper end inlet of the three-effect evaporator; and the lower end right outlet of the three-effect separator is connected with the hydrolysis tank. The structure is stably operated, energy consumption is reduced, and heat efficiency is improved.
Description
technical field [0001] The invention relates to a kind of concentration treatment using chemical reaction mother liquor, in particular to a three-effect concentrated evaporator for the sulfonamide mother liquor after the industrial sulfonamide chemical reaction. Background technique [0002] At present, it is used in the chemical industry to concentrate the concentration of the sulfonamide mother liquor after the sulfonamide chemical reaction. Generally, a simple evaporator is used in conjunction with a direct steam coil. The coil-type concentrated evaporator concentrates and evaporates the mother liquor. Due to the arrival of the heat transfer effect in some areas, a certain part may be overheated, causing the solution to boil, generate foam and flow out. Moreover, this operation is unstable to the concentration control of the concentrated sulfonamide, with low energy efficiency and high cost. Contents of the invention [0003] The technical problem to be solved by the p...
Claims
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IPC IPC(8): B01D1/26
Inventor 施方浩
Owner SUZHOU WUGAN PHARMA