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Preparation method of microfiltration membrane for treating catalyst production wastewater

A technology for the production of wastewater and microfiltration membranes, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low compressive strength, high membrane manufacturing cost, and low flux of ceramic membranes and other problems, to achieve the effect of high porosity, cheap price and high strength

Inactive Publication Date: 2019-03-26
高化学(江苏)化工新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw materials of such ceramic membranes are expensive, which partially leads to high membrane manufacturing costs, which limits the further promotion and application of ceramic membranes.
Moreover, the ceramic membrane prepared by the existing method has small flux, low compressive strength, and relatively low removal rate of COD, oil content, and suspended solid content in water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] This case proposes a method for preparing a microfiltration membrane for treating catalyst production wastewater, including the following steps:

[0029] (1) Mix and dissolve 2-4 parts of octylphenol polyoxyethylene ether and 100 parts of deionized water in a water bath at 90°C, transfer to a ball mill tank, add 60-80 parts of recovered catalyst carrier and 6-12 parts of Pore ​​agent, ball milled for 20-40min to obtain the first mixed slurry;

[0030] As an emulsifier, octylphenol polyoxyethylene ether has good emulsifying and dispersing properties, and has antibacterial properties; the recovered catalyst carrier is a catalyst carrier for carbonylation of oxalate, the main component is α-alumina, 3-5mm Balls or cylinders, crushed and sieved to obtain the required particles, replacing alumina or quartz sand in this article.

[0031] (2) Transfer the first mixed slurry to a stirring container, slowly add 4-6 parts of binder under vigorous stirring, and stir for 30-60 min...

Embodiment 1

[0049] A preparation method for treating catalyst to produce waste water microfiltration membrane, comprising the following steps:

[0050] (1) Mix and dissolve 2 parts of octylphenol polyoxyethylene ether and 100 parts of deionized water in a water bath at 90°C, transfer to a ball mill tank, add 60 parts of recovered catalyst carrier and 6 parts of pore-forming agent, and ball mill for 20 minutes to obtain The first mixed slurry; the pore forming agent includes 1.8 parts of polymethyl methacrylate and 4.2 parts of polyethylene glycol 1000; the main component of the recovered catalyst carrier is α-alumina;

[0051] (2) Transfer the first mixed slurry to a stirring container, slowly add 4 parts of binder under vigorous stirring, and stir for 30 minutes to obtain the second mixed slurry; the binder includes 3.2 parts of polyvinyl butyral and 0.8 parts carboxymethylcellulose;

[0052] (3) drying the second mixed slurry in a drying oven at 70°C, controlling the moisture content b...

Embodiment 2

[0059] A preparation method for treating catalyst to produce waste water microfiltration membrane, comprising the following steps:

[0060] (1) Mix and dissolve 3 parts of octylphenol polyoxyethylene ether and 100 parts of deionized water in a water bath at 90°C, transfer to a ball mill tank, add 70 parts of recovered catalyst carrier and 10 parts of pore-forming agent, and ball mill for 30 minutes to obtain the first A mixed slurry; the pore forming agent includes 3.5 parts of polymethyl methacrylate and 6.5 parts of polyethylene glycol 1000; the main component of the recovered catalyst carrier is α-alumina;

[0061] (2) Transfer the first mixed slurry to a stirring container, slowly add 5 parts of binder under vigorous stirring, and stir for 50 minutes to obtain the second mixed slurry; the binder includes 4.4 parts of polyvinyl butyral and 0.6 parts carboxymethylcellulose;

[0062] (3) drying the second mixed slurry in a drying oven at 75°C, controlling the moisture conten...

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PUM

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Abstract

The invention discloses a preparation method of microfiltration membrane for treating catalyst production wastewater. The preparation method comprises the following steps: (1) mixing and dissolving octyl phenol polyoxyethylene ether and deionized water, adding a catalyst carrier and a pore forming agent and ball milling to obtain first mixed slurry; (2) adding an adhesive into the first mixed slurry and stirring to obtain second mixed slurry; (3) drying the second mixed slurry; (4) grinding and granulating; (5) dry pressing powder to obtain a green body test sample and performing isostatic compaction; (6) roasting and cooling to obtain a supporting body; (7) mixing paraffin, hydroxypropyl methyl cellulose and zirconium sol and stirring to prepare coating liquid; (8) immersing the supporting body in the coating liquid, roasting after drying and cooling to obtain the microfiltration membrane. According to the preparation method of microfiltration membrane disclosed by the invention, thesurfaces of slurry particles are evenly coated with colloidal particles; the microfiltration membrane with high porosity and high strength can be prepared by controlling the sol adding amount and thesintering degree.

Description

technical field [0001] The invention relates to the technical field of inorganic membrane preparation, in particular to a preparation method of a microfiltration membrane for treating catalyst production wastewater. Background technique [0002] Membrane separation technology is a separation technology that emerged in the 1960s and has developed rapidly in the past few decades. The application field of membrane separation technology has penetrated into all aspects of people's life and production, such as chemical industry, environmental protection, electronics, textile, medicine, food and so on. Since the industrialization of membrane separation technology, organic polymer membranes have been dominant. Although organic membranes have many advantages, with the gradual expansion of membrane separation technology, some shortcomings of polymer separation membranes have gradually been exposed, such as not being resistant to high temperatures, not Chemical corrosion resistance, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B38/06C04B41/87B01D61/14B01D69/10C02F1/44
CPCB01D61/147B01D69/10C02F1/444C04B35/10C04B38/067C04B41/009C04B41/5042C04B41/87C04B2235/6562C04B2235/6567C04B2235/96C04B41/4539C04B41/0072
Inventor 曹成松黄智韬季炜
Owner 高化学(江苏)化工新材料有限责任公司