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Five-effect concentration and crystallization method for sodium gluconate solution

A sodium gluconate and solution technology, applied in the chemical industry, can solve the problems of easy generation of channeling, large temperature difference adjustment, inconvenient production, etc., and achieves the effect of avoiding excessive temperature difference and solving the problem of blocked pipes.

Inactive Publication Date: 2019-11-01
德清原素高科生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above-mentioned multi-effect evaporation equipment is in operation, it is easy to adjust the temperature difference too large and quickly concentrate and crystallize to cause tube blockage; or the solid-liquid mixture of sodium gluconate containing crystals is prone to channeling due to the uneven pressure distribution of the heating tubes, which eventually leads to Plugging
Therefore, the existing manufacturers of sodium gluconate basically use high-pressure water guns or steam to dredge the pipelines for half a month or a month. Strong companies do one backup and one use, while weak companies can only stop production for maintenance. , which brings great inconvenience to production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of five-effect evaporating equipment that sodium gluconate culture solution concentrates, comprises

[0018] Raw material tank, for storing sodium gluconate solution;

[0019] The fifth evaporator is used to concentrate and separate sodium gluconate; the fifth increaser includes a first evaporating tank, a second evaporating tank, a third evaporating tank, a fourth evaporating tank and The fifth evaporating tank; the bottom of one of the first evaporating tank, the second evaporating tank, the third evaporating tank, the fourth evaporating tank and the fifth evaporating tank is provided with a discharge pipeline;

[0020] The temperature adjustment device is connected to the first evaporation tank, the second evaporation tank, the third evaporation tank, the fourth evaporation tank and the fifth evaporation tank respectively through a plurality of temperature adjustment pipelines.

[0021] In a further preferred solution, the temperature regulating d...

Embodiment 2

[0024] The present embodiment relates to a five-effect concentrated crystallization method of sodium gluconate culture solution, and adopts five-effect evaporation equipment as recorded in embodiment 1, comprising the steps:

[0025] Step 1, feeding; Sodium gluconate solution is pumped out from raw material tank 1 with feed pump;

[0026] Step 2, preheating; the pumped sodium gluconate solution is preheated by a preheater;

[0027] Step 3, concentration and separation; in this step, the internal temperature of the one-effect evaporator, the second-effect evaporator, the three-effect evaporator, the four-effect evaporator and the five-effect evaporator is adjusted by the temperature regulating device; the first-effect evaporator , the temperature of the second-effect evaporator, three-effect evaporator, four-effect evaporator and five-effect evaporator is gradually reduced; and the following steps 3.1 to 3.5 are adopted;

[0028] Step 3.1, first-effect concentration and separa...

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Abstract

The invention relates to the field of chemical engineering, in particular to a five-effect concentration and crystallization method for a sodium gluconate solution. The method includes 1) a feeding step; 2) a preheating step; 3) a concentration and separation step; and 4) a discharging step, wherein in the step 3), internal temperatures of a first-effect evaporation tank, a second-effect evaporation tank, a third-effect evaporation tank, a fourth-effect evaporation tank, and a fifth-effect evaporation tank are adjusted through a temperature adjusting device such that the temperatures in the first-effect evaporation tank, the second-effect evaporation tank, the third-effect evaporation tank, the fourth-effect evaporation tank, and the fifth-effect evaporation tank gradually decrease. In themethod, the evaporation temperatures of the first-effect evaporation tank, the second-effect evaporation tank, the third-effect evaporation tank, the fourth-effect evaporation tank, and the fifth-effect evaporation tank are effectively controlled through the temperature adjusting device to avoid rapid concentration and crystallization due to an over-big temperature difference, thus effectively overcoming a pipe blockage problem.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a five-effect concentration and crystallization method of sodium gluconate culture solution. Background technique [0002] Sodium gluconate is widely used in industry. Sodium gluconate can be used as high-efficiency chelating agent, steel surface cleaning agent, glass bottle cleaning agent, aluminum oxide coloring in electroplating industry, etc. in industries such as construction, textile printing and dyeing, metal surface treatment, and water treatment. Concrete industry is used as high-efficiency retarder, high-efficiency water reducer, etc. Most of the crystallization devices used in the existing domestic fermentation production of sodium gluconate extraction process are filtered and then enter the multi-effect evaporator: one is cooling crystallization: that is, directly put into the crystallization tank to cool down and crystallize, and the crystallized mother liquor has to...

Claims

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Application Information

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IPC IPC(8): C07C59/105C07C51/43
CPCC07C51/43C07C59/105
Inventor 张炳荣
Owner 德清原素高科生物技术有限公司