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Applied composite solvent decoloring and revivifying method

A composite solvent and new method technology, applied in the direction of immiscible liquid separation, etc., can solve problems such as difficult removal, light transmittance decrease, pigment deepening, etc., to achieve the effect of reducing production and operation costs, reducing process burden, and enhancing decolorization effect

Active Publication Date: 2014-08-06
NINGXIA TAIYICIN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the production of different antibiotic varieties, different levels of fermentation and refining, and the content of impurity proteins and ions in the intermediate solution before solvent extraction is different, multiple batches of compound solvents are applied mechanically. After solvent extraction with this compound solvent, the residual target in the compound solvent The product and impurity protein increase, forming colloidal protein, and the specific gravity increases by more than 0.84. Repeated acid and alkali actions will denature the protein in the applied compound solvent, deepen the pigment, and seriously reduce the light transmittance, which is less than 5%. It is extremely difficult to remove and seriously affects The quality of intermediates increases the cost and risk of subsequent re-refining of intermediates
The traditional method of removing impurities with complex solvents is pickling and alkali washing regeneration, which can only remove part of the colloidal protein, and the removal effect of the gradually deepened pigmented protein is poor

Method used

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  • Applied composite solvent decoloring and revivifying method
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  • Applied composite solvent decoloring and revivifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In the present invention, in the production process of sulfur red veterinary medicine, the applied composite solvent used for alkaline extraction and refining of acetone mother liquor with solvent is used as the experimental material. The applied composite solvent has heavy residual pigment and impurities, and the conventional method is not ideal for treatment, but after the treatment of the present invention Compared with the conventional method, it has a strong experimental contrast.

[0032] (1) Add purified water with a volume ratio of 1:0.1 to the applied compound solvent, adjust the pH value of the aqueous phase of the system to 2.0-3.0 with concentrated hydrochloric acid, and stir evenly at a slow speed;

[0033] (2) Stirring finishes, above-mentioned mixed solution is left standstill phase separation, reclaims waste acid;

[0034] (3) Take the composite solvent after pickling and add a sodium hypochlorite solution with a volume ratio of 1:1 and a concentration o...

Embodiment 2

[0049] (1) Add purified water with a volume ratio of 1:0.1 to the applied compound solvent, adjust the pH value of the aqueous phase of the system to 2.0-3.0 with concentrated hydrochloric acid, and stir evenly at a slow speed;

[0050] (2) Stirring finishes, above-mentioned mixed solution is left standstill phase separation, reclaims waste acid;

[0051] (3) Take the composite solvent after pickling and add a sodium hypochlorite solution with a volume ratio of 1:0.5 to 1.25 and a concentration of 10% and stir slowly for 30 minutes;

[0052] (4) After stirring, the above-mentioned decolorizing solution is left to separate phases, and the decolorizing agent solution is reclaimed;

[0053] (5) Get the decolorized composite solvent and add the saturated sodium chloride solution with a volume ratio of 1:0.2 and stir evenly;

[0054] (6) Adjust the pH value of the aqueous phase of the system to 8.0 with dilute hydrochloric acid, and stir slowly for 30 minutes;

[0055] (7) Stirri...

Embodiment 3

[0061] (1) Add purified water with a volume ratio of 1:0.1 to the mechanically applied composite solvent, adjust the pH value of the aqueous phase of the system to 2.0~3.0 with concentrated hydrochloric acid, and stir evenly at a slow speed;

[0062] (2) stirring finishes, the above-mentioned mixed solution is left standstill for phase separation, and waste acid is recovered;

[0063] (3) take the composite solvent after pickling and add the sodium hypochlorite solution whose volume ratio is 1:0.5~1.25, the concentration is 80%, and stir slowly for 30min;

[0064] (4) stirring finishes, the above-mentioned decolorizing solution is left standstill for phase separation, and the decolorizing agent solution is recovered;

[0065] (5) get the composite solvent after decolorization and add the saturated sodium chloride solution of its volume ratio 1:0.2 and stir;

[0066] (6) adjust the pH value of the aqueous phase of the system to 8.0 with dilute hydrochloric acid, and stir at a ...

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Abstract

The invention discloses an applied composite solvent decoloring and revivifying method. The applied composite solvent decoloring and revivifying method comprises the following steps: carrying out acid pickling and removing on protein in an applied composite solvent, decoloring pigment by a decoloring agent, analyzing the decoloring agent, standing and carrying out phase splitting to take supernate, thereby obtaining the decolored and revivified composite solvent. The light transmittance of the composite solvent obtained by the invention is improved greatly, and is improved by 1-3 times compared with that of the applied composite solvent and a conventional regenerated composite solvent, reduces the specific gravity greatly, is low in colloid protein content, improves the composite solvent quality, increases the applied batch of colored and revivified composite solvent, reduces the solvent consumption caused by conventional frequent regeneration, saves energy and reduces consumption obviously, and reduces the production cost.

Description

technical field [0001] The invention belongs to the field of biochemical industry, and relates to a solvent recovery method, in particular to a method for decolorizing and regenerating a composite solvent. Background technique [0002] Composite solvent is a kind of composite organic solvent mainly composed of aviation kerosene and ester, ether, alcohol, etc. in a certain proportion. It has the following basic properties: [0003] Density: relative density (water = 1) 0.8 [0004] Appearance and properties: colorless, kerosene-flavored transparent liquid [0005] Solubility: immiscible with water, miscible in esters, ethers, alcohols, etc. Stability: stable [0006] It has a wide range of uses in the chemical industry, and is used in the manufacture of resins, plasticizers, synthetic fibers, cosmetics and explosives, as a solvent, and as an antifreeze agent for engines. my country, as a major producer of antibiotics in biochemical pharmaceuticals, currently mainly uses so...

Claims

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Application Information

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IPC IPC(8): B01D17/02
Inventor 汤更生王勇平杨文周张鹏孙丽娇
Owner NINGXIA TAIYICIN BIOTECH CO LTD
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