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Technology for preparing acrylamide through biochemical method

A technology of acrylamide and biochemical method, applied in biochemical equipment and methods, methods based on microorganisms, microorganisms, etc., can solve problems such as complex process, corrosion of production equipment, increased production cost, etc., achieve complete reaction, little environmental pollution, The effect of less waste

Inactive Publication Date: 2018-11-30
南通博亿化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of acrylamide is currently common by sulfuric acid hydration method and catalytic hydration method. The sulfuric acid hydration method uses acrylonitrile and water in an equimolar ratio to hydrate in the presence of sulfuric acid. The production of acrylamide by this method is a batch operation with complicated processes. Moreover, the acid and alkali consumed in the process will corrode the production equipment, resulting in an increase in production costs. The common catalytic hydration method is the copper catalytic hydration method, which has the disadvantage of generating an addition reaction during the reaction process and producing a small amount of addition reactants.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a. Cultivation of strains: select high-quality strains, add them to the aqueous culture solution for preliminary cultivation, and the culture period is 24 hours, then add the strains after the preliminary cultivation to the culture medium composed of aqueous nutrient solution and pure water for a large amount Breeding, the breeding temperature is 25-37°C, the breeding cycle is 2-3 days, after the mass breeding is completed, take it out, put it in a centrifuge at a speed of 12000r / min, centrifuge for 30min, add pure water to dilute after centrifugation, and prepare a strain catalyst ;

[0020] B, the production of acrylamide: 0.08Kg of above-mentioned strain catalyst is joined in the acrylonitrile of 1Kg, carry out hydration reaction, after hydration reaction, reaction solution is filtered, then ion adsorption is carried out to filtrate, finally obtain acrylamide aqueous solution;

[0021] c. Refining extraction of acrylamide: the above-mentioned acrylamide aqueous solut...

Embodiment 2

[0024] a. Cultivation of strains: select high-quality strains, add them to the aqueous culture solution for preliminary cultivation, and the culture period is 24 hours, then add the strains after the preliminary cultivation to the culture medium composed of aqueous nutrient solution and pure water for a large amount Breeding, the breeding temperature is 25-37°C, the breeding cycle is 2-3 days, after the mass breeding is completed, take it out, put it in a centrifuge at a speed of 12000r / min, centrifuge for 30min, add pure water to dilute after centrifugation, and prepare a strain catalyst ;

[0025] B, the production of acrylamide: 0.12Kg of above-mentioned strain catalyst is joined in the acrylonitrile of 1Kg, carry out hydration reaction, after hydration reaction, reaction solution is filtered, then ion adsorption is carried out to filtrate, finally obtain acrylamide aqueous solution;

[0026] c. Refining extraction of acrylamide: the above-mentioned acrylamide aqueous solut...

Embodiment 3

[0029] a. Cultivation of strains: select high-quality strains, add them to the aqueous culture solution for preliminary cultivation, and the culture period is 24 hours, then add the strains after the preliminary cultivation to the culture medium composed of aqueous nutrient solution and pure water for a large amount Breeding, the breeding temperature is 25-37°C, the breeding cycle is 2-3 days, after the mass breeding is completed, take it out, put it in a centrifuge at a speed of 12000r / min, centrifuge for 30min, add pure water to dilute after centrifugation, and prepare a strain catalyst ;

[0030] B, the production of acrylamide: 0.1Kg of above-mentioned strain catalyst is joined in the acrylonitrile of 1Kg, carry out hydration reaction, after hydration reaction, reaction solution is filtered, then ion adsorption is carried out to filtrate, finally obtain acrylamide aqueous solution;

[0031] c. Refining extraction of acrylamide: the above-mentioned acrylamide aqueous soluti...

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Abstract

The invention discloses a technology for preparing acrylamide through a biochemical method. According to the technology, acrylonitrile and water serve as raw materials, hydration reaction is carried out under the action of a biocatalyst, and after the reaction is completed, the filtering, refining, crystallizing and drying processes are carried out so as to obtain the acrylamide. The technology has the advantages that the biocatalyst is adopted, the environmental pollution is small, recycling can be realized, and therefore the use cost is lowered; and the reaction is complete, no by-products are generated, the reaction conditions are mild, the energy consumption is low, and the three wastes (waste water, waste solid and waste gas) are few.

Description

technical field [0001] The invention relates to the field of production technology of acrylamide, in particular to a technology for preparing acrylamide by a biochemical method. Background technique [0002] Acrylamide is a white crystalline chemical that is the raw material for the production of polyacrylamide. Polyacrylamide is mainly used for water purification, pulp processing and inner coating of pipelines. The preparation of acrylamide is currently common by sulfuric acid hydration method and catalytic hydration method. The sulfuric acid hydration method uses acrylonitrile and water in an equimolar ratio to hydrate in the presence of sulfuric acid. The production of acrylamide by this method is a batch operation with complicated processes. Moreover, the acid and alkali consumed in the process will corrode the production equipment, resulting in an increase in production costs. The common catalytic hydration method is the copper catalytic hydration method, which has the...

Claims

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Application Information

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IPC IPC(8): C12P13/02C12R1/645C12R1/225
CPCC12P13/02
Inventor 薛建斐董富金
Owner 南通博亿化工有限公司