Method for removing mycelia from itaconic acid fermentation liquid

A fermentation broth and itaconic acid technology, applied in the separation/purification of carboxylic acid compounds, organic chemistry, etc., can solve the problems of high operating costs and achieve the effects of reduced energy consumption, low loss rate, and high crystallization rate

Active Publication Date: 2013-01-23
QINGDAO LANGYATAI GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the present invention has high yield and good product quality, the operating cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 281 cubic meters of itaconic acid fermentation broth produced by fermentation with a temperature of about 30°C is heated to 49°C through a tubular heat exchanger, and then transported to the decolorization tank (the acidity is 7.90% after testing), and then sent to the decolorization tank Add powdered activated carbon to decolorize;

[0032] (2) Take chitosan solution and polysilicate ferric gel, wherein the mass percent concentration of chitosan solution is 0.8%, according to the mass ratio of chitosan and polysilicate iron is 5:1 ratio of the two Mix, stir and react for 1 hour, and the stirring speed is 30rpm to obtain the flocculant;

[0033] (3) Take 100 kg of the decolorized itaconic acid fermentation broth obtained in step (1), add 500 g of the flocculant obtained in step (2), stir for 30 minutes at a stirring speed of 60 rpm, stop stirring, and keep warm for 60 minutes;

[0034] (4) Heat the mixture obtained in step (3) to 50°C, and then filter it with a pro...

Embodiment 2

[0036] (1) 283 cubic meters of itaconic acid fermentation broth produced by fermentation with a temperature of about 30°C is heated to 47°C through a tubular heat exchanger, and then transported to the decolorization tank (the acidity is 8.11% after testing), and then sent to the decolorization tank Add powdered activated carbon to decolorize;

[0037] (2) Take chitosan solution and polysilicate ferric gel, wherein the mass percent concentration of chitosan solution is 1.5%, according to the mass ratio of chitosan and polysilicate iron as 3:1 ratio of the two Mix, stir and react for 1.5 hours, the stirring speed is 60rpm, and the flocculant is obtained;

[0038] (3) Take 100 kg of the decolorized itaconic acid fermentation broth obtained in step (1), add 1000 g of the flocculant obtained in step (2), stir for 10 minutes at a stirring speed of 30 rpm, stop stirring, and keep warm for 90 minutes;

[0039] (4) Heat the mixture obtained in step (3) to 40°C, and then filter it wit...

Embodiment 3

[0041] (1) The 276 cubic meters of itaconic acid fermentation liquid produced by fermentation was heated to 48°C through a tubular heat exchanger, and then transported to the decolorization tank (the acidity was 7.90% after testing), and powdered activated carbon was added to the decolorization tank for decolorization ;

[0042] (2) Take chitosan solution and polysilicate iron gel, wherein the mass percent concentration of chitosan solution is 1.0%, according to the mass ratio of chitosan and polysilicate iron is 4:1 ratio of the two Mix, stir and react for 1 hour and 15 minutes, the stirring speed is 45rpm, and the flocculant is obtained;

[0043] (3) Take 100 kg of the decolorized itaconic acid fermentation liquid obtained in step (1), add 800 g of the flocculant obtained in step (2), stir for 20 minutes at a stirring speed of 45 rpm, stop stirring, and keep warm for 80 minutes;

[0044] (4) Filter the mixed liquid obtained in step (3) with a program-controlled plate-and-fr...

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PUM

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Abstract

The invention relates to a method for removing mycelia from an itaconic acid fermentation liquid, which comprises the following steps: (1) preparing a flocculant; (2) flocculating by using the flocculant; and (3) filtering. The novel mycelia removal method combining flocculant flocculation and program-controlled plate and frame filter filtration, which is substituted for the simple filtration technique used in the traditional technology, has the advantages of high mycelia removal rate, low itaconic acid loss rate, energy saving, consumption reduction and the like.

Description

technical field [0001] The invention relates to a method for removing mycelia in itaconic acid fermentation broth, and belongs to the technical field of itaconic acid preparation. Background technique [0002] The main production method of itaconic acid is to use reducing sugars such as glucose as nutrients, and produce itaconic acid under the fermentation of corresponding enzymes and bacteria. During the fermentation process, since the raw material sugars added cannot be fully utilized, and the nutrients added to the fermentation system, in addition to reducing sugars, also contain polysaccharides and non-reducing sugars, these substances cannot be used by fermentation. Therefore, in At the end of the fermentation, the itaconic acid fermentation broth is a very complex multi-component mixed system, in which there are mainly three types of substances: mycelium, intracellular products, and extracellular products. [0003] To extract the required biochemical substances from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C57/13C07C51/42
Inventor 李霞李悦明张希铭徐建春
Owner QINGDAO LANGYATAI GRP
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