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Phase formation agent for liquid-liquid-liquid tri-phase system

A technology of three-phase system and phase-forming agent, applied in the field of separation, can solve the problems of difficult industrialization, difficulty in purifying and recovering intermediate phase-forming agent, and increased cost, and achieves the effect of simple operation.

Inactive Publication Date: 2006-07-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the extremely difficult purification and recovery of the mesophase phase-forming agent used in the existing three-phase extraction technology, which makes the technology increase the cost and is difficult to industrialize the defect, thereby providing a kind of mesophase that can facilitate Phase-forming agent for liquid-liquid-liquid three-phase system with purification and recycling, reducing raw material cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, using the phase forming agent provided by the present invention for the liquid-liquid-liquid three-phase system to extract the penicillin fermentation filtrate and the purification and recovery of the polymer interphase

[0031] (1) Three-phase extraction penicillin fermentation filtrate

[0032] Under low temperature, 12g PEO-PPO block copolymer (weight-average molecular weight is 2000, and wherein PEO accounts for 40wt% of copolymer), 16g ammonium sulfate and 40g butyl acetate are added in the fresh penicillin fermentation filtrate of 70g, with 10 % sulfuric acid to adjust the pH to make pH = 2.0-2.2, mix well and then settle for 30 minutes for separation, forming a stable liquid-liquid-liquid three-phase system without emulsification. The upper phase is a clear organic phase, containing more than 90% penicillin; the middle phase is a reddish-brown aqueous phase rich in copolymer PEO-PPO, and contains suspensions of protein, hyphae and other impurities; ...

Embodiment 2

[0037]Example 2. Purification and recovery of phenol-containing wastewater system and polymer mesophase extracted using phase forming agent for liquid-liquid-liquid three-phase system provided by the present invention

[0038] (1) Three-phase extraction phenolic wastewater system

[0039] Under normal temperature, 9g EOPO random copolymer (weight-average molecular weight is about 10000, wherein EO accounts for 75wt% of copolymer), 12g sodium sulfate and 30g of isooctyl alcohol is added in the waste water system containing 75g phenol and nitrophenol , adjusted with lye to make the pH = 9.0-9.5, mixed well and then centrifuged at a low speed (2000r / min) for 10min to separate, forming a liquid-liquid-liquid three-phase system. The upper phase is a clear organic phase containing more than 85% of phenol; the middle phase is an aqueous phase rich in EOPO random copolymer, more than 90% of nitrophenol and a small amount of impurities; the lower phase is an aqueous phase rich in salt....

Embodiment 3

[0044] Example 3, using the phase forming agent provided by the present invention for the liquid-liquid-liquid three-phase system to extract the phenol-containing wastewater system and the purification and recovery of the polymer mesophase

[0045] (1) Three-phase extraction phenolic wastewater system

[0046] Under normal temperature, 12g EOPO random copolymer (weight-average molecular weight is about 4000, wherein EO accounts for 50wt% of copolymer), 12g potassium dihydrogen phosphate and 25g tributyl phosphate are added to 75g containing phenol and nitrophenol In the wastewater system, lye is used to adjust the pH to 9.0 to 9.5, and after being thoroughly mixed, it is centrifuged at a low speed (2000r / min) for 10 minutes for separation, forming a liquid-liquid-liquid three-phase system. The upper phase is a clear organic phase containing more than 80% phenol; the middle phase is an aqueous phase rich in EOPO random copolymer, more than 95% nitrophenol and a small amount of ...

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Abstract

The invention relates the phase former of liquid-liquid-liquid triple systems, comprising 7-20wt% copolymer of epoxyethane and epoxypropane, 7-20wt% inorganic salt and 10-40wt% organic solvent. The copolymer is block copolymer the weight average molecular weight of which is 1000-10000, comprising 40-85% epoxyethane block, or random copolymer the weight average molecular weight of which is 800-10000, comprising 50-85% epoxyethane. The invention can be used in separating filter liquor containing the biofermentation system, industrial waste water, and the complicated system containing the miscible liquids of organic synthesis product. The invention reaches the purification of phase-forming polyaromatics, reduces the cost, shortens the nature difference of organic phase and intermediate phase, and simplifies the technology.

Description

technical field [0001] The invention belongs to the technical field of separation, and in particular relates to a phase forming agent for a liquid-liquid-liquid three-phase system, which can be applied to separate complex systems containing multiple components. Background technique [0002] Compared with traditional liquid-liquid two-phase extraction, three-phase extraction has many advantages: it can realize the integration of separation and extraction process, simplify the process flow; it can separate or separate three or more substances or groups in complex systems in one step. Enrichment is convenient for subsequent processing; due to the difference in properties between phases, it is beneficial to improve the selectivity of the extraction process, etc. Therefore, the three-phase extraction technology is a separation method with very broad application prospects in the fields of biochemical industry, wastewater treatment, and the separation of active components of natura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04
Inventor 申淑锋常志东安振涛孙兴华胡欣刘吉刘会洲
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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