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Continuous single-effect vacuum evaporation crystallization system as well as application and technology

A vacuum evaporation and crystallization system technology, applied in evaporation separation crystallization, evaporation, solution crystallization and other directions, can solve the problems of unstable crystal form of finished sodium glutamate, unstable operating parameters, low degree of automation, etc., to reduce steam consumption. The effect of quantity, uniformity of particles and high quality of crystalline product

Inactive Publication Date: 2017-01-11
SHANDONG TIANLI DRYING TECH & EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the crystallization of sodium glutamate in my country has been using the traditional method, using single-effect crystallization, using a standard crystallization tank, this evaporation crystallization method belongs to intermittent production, mostly manual operation, low degree of automation, and its operating parameters are unstable, resulting in the production of glutamic acid in the finished product. The sodium crystal form is unstable, and the steam consumption is high. Evaporation of 1 ton of sodium glutamate solution requires 1.1 to 1.2 tons of steam, which is not conducive to energy-saving production

Method used

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  • Continuous single-effect vacuum evaporation crystallization system as well as application and technology
  • Continuous single-effect vacuum evaporation crystallization system as well as application and technology

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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the continuous single-effect vacuum evaporation crystallization system includes water ring vacuum pump 1, centrifuge 2, surface condenser 3, crystallizer 4, heating chamber 5, steam jet pump 6, liquid storage tank 7, preheater 8, circulation Pump 9, condensate pump 10, raw material pump 11.

[0039] Such as figure 2 As shown, the DTB crystallizer includes a steam outlet 12, a circulating liquid outlet 13, a clarification zone 14, a draft tube 15, a propeller 16, a solution inlet 17, a mixer 18, and a crystal slurry outlet 19.

[0040] The continuous single-effect vacuum evaporation crystallization system includes a preheater 8 for preheating the solution; a heating chamber 5, the solution inlet of the heating chamber 5 is connected to the preheater 8, and the heating chamber 5 is filled with steam and enters the heating chamber 5 The solution inside is subjected to heat exchange; vacuum crystallizer 4, vacuum crystallizer 4 are separately connect...

Embodiment 2

[0048] A continuous single-effect vacuum evaporation crystallization process for sodium glutamate, the specific steps are as follows:

[0049] 1) The sodium glutamate solution enters the preheater 8 through the raw material pump 11, and the preheated sodium glutamate solution is mixed with the circulating liquid and sent to the heating chamber 5 by the circulating pump 9;

[0050] 2) The sodium glutamate solution exchanges heat with steam in the heating chamber 5. After the heat exchange, the steam becomes condensed water and enters the liquid storage tank 7, and the condensed water passes through the condensate pump 10 to the preheater 8 to perform heat exchange on the sodium glutamate solution. Preheating, the uncondensed steam re-enters the heating chamber 5 to continue heat exchange;

[0051] 3) The heated sodium glutamate solution enters the DTB crystallizer 4 from the solution inlet 17, and continuously crystallizes in the DTB crystallizer 4. The propeller 16 is driven by the m...

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Abstract

The invention discloses a continuous single-effect vacuum evaporation crystallization system as well as application and technology. The system comprises a preheater, a heating chamber and a vacuum crystallizer, wherein the preheater is used for preheating a solution; a solution inlet of the heating chamber is communicated with the preheater; steam is introduced into the heating chamber and performs heat exchange with the solution in the heating chamber; the vacuum crystallizer is connected with the heating chamber, a centrifuge and a surface condenser respectively; the solution heated by the heating chamber is crystallized in the crystallizer; the crystallized crystal slurry enters the centrifuge and is separated to obtain a finished product of crystal; one part of the secondary steam generated by the vacuum crystallizer enters the surface condenser to be condensed, and the other part of the secondary steam enters the heating chamber for cyclic utilization; through the arrangement of the heating chamber, the solution is heated for the second time, and the heating chamber can make use of live steam as well as secondary steam generated by an evaporator; and the whole system realizes continuous circular generation of sodium glutamate particles, and the crystal product has the advantages of high quality, large crystalline particle size, uniform particles and smooth surface.

Description

Technical field [0001] The invention relates to the field of crystallization, in particular to a continuous single-effect vacuum evaporation crystallization system, application and process. Background technique [0002] The existing crystallization production system usually uses more multi-effect crystallizers, the system is relatively complicated, and effective continuous production is not realized. [0003] Sodium glutamate is a sodium salt of the amino acid glutamate, an odorless and colorless crystal, and the main component of MSG. The sodium glutamate solution is concentrated so that the sodium glutamate in the solution reaches supersaturation and crystallizes out. The precipitated sodium glutamate monohydrate crystals are separated and dried to become the finished MSG. Sodium glutamate is currently the most widely used amino acid in the world with the largest production and sales volume. [0004] At present, the crystallization of sodium glutamate in my country has been using...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02B01D1/00B01D1/30
CPCB01D9/0031B01D1/00B01D1/30
Inventor 柴本银邵敏员冬玲刘涛
Owner SHANDONG TIANLI DRYING TECH & EQUIP
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