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Process for processing zymotic fluid by flexible compression method

A technology of fermented liquid and squeezing method, which is applied in the field of fermented liquid processing technology, can solve problems such as difficult automation, solid-liquid separation, and post-processing

Inactive Publication Date: 2009-09-30
NANJING SMARTSEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the following disadvantages: the processing capacity of a single device is low; it is difficult to automate the removal of filter residue and filter cloth replacement, and the workload is huge; generally, pre-treatment such as flocculation is required, and filter aids are added to affect the composition of solids; the filtration accuracy is low. , the quality of the clear liquid is poor; the moisture content of the solid is high, generally above 70%, which affects post-processing
[0007] This shows that all there is the deficiency of solid-liquid separation in the processing technology of existing fermented liquid, is to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment is the separation of microbial production of 1,3-propanediol: adjust the temperature of the fermented liquid to 37 ° C, pH 5.0, under stirring, add the chitosan solution (molecular weight 4kD) prepared in advance, the total chitosan Control the concentration to 0.5g / L, stir for 30min, and set aside. The flocculated fermented liquid is placed in the distributor with a distributor, and then layered and evenly distributed to form a pile of material to be pressed. Use the air-cushion vehicle to remove the material stack from the distributing device. On the track, after pre-pressing, the liquid will basically reach 63% of the total amount, and then perform a first-stage pressing. The pressing adopts a program-controlled automatic pressing-holding-pressing cycle , reach the rated 8kg / cm within 4 hours 2 Keep the pressure until almost no water flows out. At this time, the moisture content of the material is basically 49%. Move it out with an air-cushion vehi...

Embodiment 2

[0046] This example is the separation of L-lactic acid produced by the fermentation of Rhizopus oryzae strain As3.819: adjust the temperature of the fermentation broth to 40°C and pH 5.0, and add the pre-prepared chitosan solution under stirring, the total chitosan Control the concentration to 20mg / L, stir for 10min, and set aside. The flocculated fermented liquid is placed in the distributor with a distributor, and then layered and evenly distributed to form a pile of material to be pressed. Use the air-cushion vehicle to remove the material stack from the distributing device. On the track, after pre-pressing, the liquid will basically reach 62% of the total amount, and then perform a first-stage pressing. The pressing adopts a program-controlled automatic pressing-holding-pressing cycle , reach the rated pressure of 8kg / cm2 within 4 hours, and maintain the pressure until almost no water flows out. At this time, the moisture content of the material is basically 49%. Move it...

Embodiment 3

[0048] This example is the separation of lincomycin fermentation broth: the lincomycin fermentation broth with a temperature of 20°C and a pH of 3 is stirred, and a pre-prepared flocculant (cationic polyacrylamide (relative molecular mass 900× 104)), the total concentration was controlled at 50mg / L, stirred for 20min, and set aside. The flocculated fermented liquid is placed in the distributor with a distributor, and then layered and evenly distributed to form a pile of material to be pressed. Use the air-cushion vehicle to remove the material pile from the material distribution device. On the track, after pre-pressing, the liquid will basically reach 58% of the total amount, and then perform a first-stage pressing. The pressing adopts a program-controlled automatic pressing-holding-pressing cycle. , reach the rated pressure of 8kg / cm2 within 4 hours, and maintain the pressure until almost no water flows out. At this time, the moisture content of the material is basically 47%...

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Abstract

The invention relates to a process for processing zymotic fluid, in particular to a process for processing zymotic fluid by a flexible compression method, including the following steps: (1) preprocessing zymotic fluid; (2) distributing materials: a vertical overlapped way is adopted, only filter media such as filter cloth, and the like exist between material layers; (3) prepressing: the pressure range for prepressing is 0.05-2kgf / cm<2>, the time is 1-6h and the pressure is maintained for 0.5-2h; (4) primary compression: a hydraulic way is adopted, the pressure range is 5-20kgf / cm<2>, the time is 2-10h and the pressure is maintained for 0.5-2h; (5) secondary compression: a hydraulic way is adopted, the pressure range is 20-100kgf / cm<2>, the time is 2-10h and the pressure is maintained for 0.5-2h; (6) discharging; and (7) post-processing. Compared with the prior process for processing zymotic fluid, the invention has low humidity content of filter residue and energy consumption and favorable environment protection and is suitable for processing a system with high solid content.

Description

technical field [0001] The invention relates to a process for treating fermented liquid, in particular to a process for treating fermented liquid by a flexible pressing method. Background technique [0002] The modern fermentation industry not only produces alcoholic beverages, acetic acid and bread, but also produces a variety of medical and health drugs such as insulin, interferon, growth hormone, antibiotics and vaccines, and produces agricultural production materials such as natural insecticides, bacterial fertilizers and microbial herbicides. In the chemical industry, amino acids, spices, biopolymers, enzymes, vitamins and single-cell proteins are produced. In the extraction process of a large number of fermentation products, the separation process of solid and liquid is almost included, and it is a difficult problem to solve in many fields, and there are phenomena such as low efficiency and high energy consumption. The separation methods currently used in the fermenta...

Claims

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Application Information

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IPC IPC(8): B01D37/00C12M1/00
Inventor 蒋永狄乐平
Owner NANJING SMARTSEP
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