High-flux ceramic flat sheet membrane and preparation method thereof

A flat membrane, high-flux technology, applied in the field of water treatment, can solve the problems of high sintering temperature, high production cost, low apparent porosity and water flux, etc., to optimize the pore structure, widen the sintering temperature, and reduce the operating cost. Effect

Active Publication Date: 2019-09-20
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the ceramic flat membrane is mainly made of alumina, but the sintering temperature of the alumina ceramic flat membrane is high, generally above 1000°C, the production cost is high, and the apparent porosity and water flux of the product are low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The present embodiment provides a high-throughput ceramic flat membrane, including a ceramic flat membrane support body and a separation membrane layer coated on the outer surface of the ceramic flat membrane support body;

[0046] The ceramic flat membrane support is made of the following raw materials in parts by mass: 40 parts of diatomite with a particle size of 12 μm, 40 parts of α-alumina powder with a particle size of 12 μm, 8 parts of a pore-forming agent, and 30 parts of a support binder , 8 parts of lubricant, 12 parts of plasticizer, 18 parts of chopped fiber, 20 parts of water;

[0047] The separation membrane layer is made of the following raw materials in parts by mass:

[0048] 40 parts of ceramic powder particles, 20 parts of separation membrane binder, 6 parts of ethanol, 9 parts of polyethylene glycol, and 28 parts of water.

[0049] The pore-forming agent is starch, the chopped fiber is mullite chopped fiber, the lubricant is glycerin, the plasticize...

Embodiment 2

[0062] The present embodiment provides a high-throughput ceramic flat membrane, including a ceramic flat membrane support body and a separation membrane layer coated on the outer surface of the ceramic flat membrane support body;

[0063] The ceramic flat membrane support is made of the following raw materials in parts by mass: 47 parts of diatomite with a particle size of 12 μm, 40 parts of α-alumina powder with a particle size of 12 μm, 4 parts of pore-forming agent, and 27 parts of support binder , 10 parts of lubricant, 9 parts of plasticizer, 17 parts of chopped fiber, 22 parts of water;

[0064] The separation membrane layer is made of the following raw materials in parts by mass:

[0065] 40 parts of ceramic powder particles, 30 parts of separation membrane binder, 6 parts of ethanol, 9 parts of polyethylene glycol, and 28 parts of water.

[0066] The pore-forming agent is charcoal powder, the chopped fiber is mullite, the lubricant is polyethylene glycol, the plastici...

Embodiment 3

[0080] The present embodiment provides a high-throughput ceramic flat membrane, including a ceramic flat membrane support body and a separation membrane layer coated on the outer surface of the ceramic flat membrane support body;

[0081] The ceramic flat membrane support is made of the following raw materials in parts by mass: 40 parts of diatomite with a particle size of 12 μm, 40 parts of α-alumina powder with a particle size of 12 μm, 12 parts of a pore-forming agent, and 21 parts of a support binder , 12 parts of lubricant, 13 parts of plasticizer, 12 parts of chopped fiber, 21 parts of water;

[0082] The separation membrane layer is made of the following raw materials in parts by mass:

[0083] 43 parts of ceramic powder particles, 35 parts of separation membrane binding agent, 4 parts of ethanol, 12 parts of polyethylene glycol, and 30 parts of water.

[0084] The pore-forming agent is starch, the chopped fiber is mullite fiber, the lubricant is glycerin, the plastici...

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Abstract

The invention relates to a high-flux ceramic flat sheet membrane and a preparation method thereof. The high-flux ceramic flat sheet membrane comprises a ceramic flat sheet membrane supporting body and a separation membrane layer wrapping the outer surface of the ceramic flat sheet membrane supporting body. The ceramic flat sheet membrane support body is prepared from the following raw materials in parts by mass: 40-57 parts of diatomite, 30-40 parts of alpha-alumina powder, 4-12 parts of a pore forming agent, 20-40 parts of a support body binding agent, 8-12 parts of a lubricant, 9-13 parts of a plasticizer and 12-18 parts of chopped fibers. The separation membrane layer is prepared from the following raw materials in parts by mass: 40-43 parts of ceramic powder particles, 4-6 parts of ethanol, 19-40 parts of a separation membrane layer binding agent and 9-12 parts of polyethylene glycol. The high-flux ceramic flat sheet membrane product is low in sintering temperature, low in production cost, high in product porosity, small in filtering resistance and high in water flux.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a high-throughput ceramic flat membrane and a preparation method thereof. Background technique [0002] Ceramic flat membrane material is a new type of membrane separation material for water treatment developed in the past ten years. Compared with existing organic membrane materials, it has high mechanical strength, good chemical stability, high water permeability, oxidation resistance, and easy cleaning and regeneration. Advantages, it can effectively solve the technical problems of short service life and susceptibility to acid and alkali corrosion in the engineering application process of other existing membrane materials, and is especially suitable for the treatment of special media, high-concentration organic wastewater, and difficult-to-treat sewage. At the same time, compared with the traditional tubular ceramic membrane material, the ceramic flat membrane material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622C04B38/06C04B41/87B01D71/02B01D69/06B01D67/00
CPCB01D67/0041B01D69/06B01D71/024B01D71/025C04B35/14C04B35/622C04B38/067C04B38/068C04B41/009C04B41/5031C04B41/5041C04B41/87C04B2235/3217C04B2235/5232C04B2235/5436C04B2235/5445C04B41/4543C04B41/463C04B41/488C04B41/5024C04B41/5015C04B41/5016
Inventor 唐钰栋赵世凯薛友祥李小勇李杰马腾飞徐传伟张久美王响付金刚
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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