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Continuous emulsion liquid membrane extraction device and recovery process of epichlorohydrin wastewater

A technology of epichlorohydrin and emulsion liquid film, which is applied in the field of water treatment, can solve the problems of difficult treatment and achieve the effect of continuity

Active Publication Date: 2017-05-24
北京龙美嘉宇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods all have the problem of great difficulty in dealing with

Method used

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  • Continuous emulsion liquid membrane extraction device and recovery process of epichlorohydrin wastewater
  • Continuous emulsion liquid membrane extraction device and recovery process of epichlorohydrin wastewater
  • Continuous emulsion liquid membrane extraction device and recovery process of epichlorohydrin wastewater

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Experimental program
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Effect test

Embodiment 1

[0041] Step 1, preparation of emulsion liquid membrane: Dissolve the surfactant Span65 in the membrane solvent, add the carrier tri-n-octylamine, membrane aid kerosene and 25wt% NaCl in the inner phase of the salt solution, and stir at a high speed of 2000-2500rpm after mixing Emulsification to obtain a water-in-oil emulsion film, wherein the weight ratio range among surfactant, film solvent, carrier, film aid, and salt solution internal phase liquid is 1:100:80:6:10;

[0042] Step 2, extraction: feed the water-in-oil emulsion liquid membrane and epichlorohydrin waste water into the channel of the tubular porous ceramic filter 2 according to the volume ratio of 1:10, and the mixed material liquid flows through the tubular porous ceramic filter The flow velocity in the channel of 2 is 0.1m / s, and the feed liquid pressure is 0.1bar. After cross-flow filtration, the saline solution seeps out from the pipe wall, and organic impurities enter the liquid film; the tubular ceramic filt...

Embodiment 2

[0047]The first step is to prepare the emulsion liquid membrane: dissolve the surfactant Span65 in the membrane solvent, and add the carrier tri-n-octylamine, membrane aid kerosene and 25wt% NaCl in the inner phase of the salt solution, and mix and emulsify at a high speed of 2500rpm A water-in-oil type emulsion liquid film is obtained, wherein the weight ratio range among surfactant, film solvent, carrier, film aid, and salt solution internal phase liquid is 1: 120: 90: 12: 15;

[0048] Step 2, extraction: feed the water-in-oil emulsion liquid membrane and epichlorohydrin waste water into the channel of the tubular porous ceramic filter 2 according to the volume ratio of 1:20, and the mixed material liquid flows through the tubular porous ceramic filter The flow velocity in the channel of 2 is 0.5m / s, and the feed liquid pressure is 0.5bar. After cross-flow filtration, the saline solution seeps out from the pipe wall, and organic impurities enter the liquid film; the tubular c...

Embodiment 3

[0053] The first step is to prepare the emulsion liquid membrane: dissolve the surfactant Span65 in the membrane solvent, and add the carrier tri-n-octylamine, membrane aid kerosene and 25wt% NaCl in the inner phase of the salt solution, and mix and emulsify at a high speed of 2200rpm A water-in-oil type emulsion liquid film is obtained, wherein the weight ratio range among the surfactant, the film solvent, the carrier, the film aid, and the internal phase liquid of the salt solution is 1:110:85:7:12;

[0054] Step 2, extraction: feed the water-in-oil emulsion liquid membrane and epichlorohydrin waste water into the channel of the tubular porous ceramic filter 2 according to the volume ratio of 1:15, and the mixed material liquid flows through the tubular porous ceramic filter The flow velocity in the channel of 2 is 0.3m / s, and the feed liquid pressure is 0.3bar. After cross-flow filtration, the saline solution seeps out from the pipe wall, and organic impurities enter the liq...

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Abstract

The invention relates to a continuous emulsion liquid membrane extraction device and a recovery process of epichlorohydrin wastewater, and belongs to the technical field of water treatment. An integrated treatment process is adopted, the epichlorohydrin wastewater is treated, pre-extraction is mainly carried out through an emulsion liquid membrane, micropores of a porous ceramic filter penetrate through a chloride solution to obtain a purified salt solution, and the extracted emulsion is subjected to vacuum distillation after being demulsified to obtain a solvent. The solvent can be recycled to prepare an emulsion and the continuity of the whole process is achieved.

Description

technical field [0001] The invention relates to a continuous emulsion liquid membrane extraction device and a recovery process for epichlorohydrin waste water, belonging to the technical field of water treatment. Background technique [0002] Epichlorohydrin is an important organic chemical raw material and fine chemical product with a wide range of uses, mainly used in the production of epoxy resin, synthetic glycerin, chlorohydrin rubber, nitroglycerin explosives, glass fiber reinforced plastics, and electrical insulation products. In addition, epichlorohydrin can also be used to synthesize nitroglycerin explosives, glass fiber reinforced plastics, electrical insulation products, surfactants, medicines, pesticides, coatings, rubber materials, ion exchange resins, plasticizers, glycidyl derivatives, chlorohydrin rubber, etc. A variety of products, used as solvents for cellulose esters, resins, and cellulose ethers, used to produce chemical stabilizers, chemical dyes, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/26C02F103/36
Inventor 王维根
Owner 北京龙美嘉宇科技有限公司
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