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Bicontrol film layer inorganic film pipe and its preparation method

A dual-control, inorganic membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of membrane clogging, inconspicuous, difficult to clean, etc., and achieve the effect of short production cycle and simple process

Active Publication Date: 2009-03-25
广州净易环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this forming method can only form a control film layer on the inner surface of the membrane tube, and its advantages only appear when the fluid enters from the tube. If the fluid enters from the outside of the tube, the large pore diameter of the outer tube wall will easily cause contamination in the fluid. If the material enters the pores, the membrane will be clogged and it will not be easy to clean. At this time, the role of the control membrane layer on the inner tube wall in preventing membrane pollution such as membrane pore clogging is not obvious.

Method used

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  • Bicontrol film layer inorganic film pipe and its preparation method
  • Bicontrol film layer inorganic film pipe and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mix 10 parts by weight of alumina powder with a particle size of 0.2 μm, 10 parts by weight of water and 0.03 parts by weight of polyvinyl alcohol to prepare slurry 1; Alumina powder, 15 parts by weight of alumina powder with a particle size of 0.3 μm, 100 parts by weight of water, 0.3 parts by weight of polyvinyl alcohol and 0.2 parts by weight of sodium pyrophosphate are mixed to configure slurry 2. Slurries 1 and 2 were mechanically stirred for 12 hours respectively to make a uniform slurry. Start the centrifugal membrane tube forming machine, inject slurry 1 into the high-speed rotating copper alloy tube, the tube speed is 1000rpm, form by centrifugal, dehydrate, rotate for 2 minutes, then inject slurry 2, and rotate at 4000rpm The aluminum oxide film tube green body with double control film layer is made in 10 minutes. The produced aluminum oxide film tube green body is demolded and sintered after drying. The sintering temperature of the film tube is 1600 ° C, and ...

Embodiment 2

[0032] In parts by weight, mix 10 parts of metal Ni powder with a particle size of 0.5 μm, 6 parts of water and 0.02 parts of polyacrylamide to prepare slurry 1; Ni powder, 10 parts by weight of metal Ni powder with a particle size of 0.5 μm, 50 parts by weight of water, 0.1 part by weight of polyacrylamide and 0.05 parts by weight of sodium hexametaphosphate were mixed to prepare slurry 2 . Slurry 1 and Slurry 2 were mechanically stirred for 2 hours respectively to make a uniform slurry. Start the centrifugal membrane tube forming machine, inject the slurry 1 into the high-speed rotating porous stainless steel tube, the tube speed is 10000rpm, through centrifugal forming, dehydration, rotate for 1 minute, then inject the slurry 2, rotate 20 at the speed of 12000rpm The green body of the metal film tube with double control film layer is made in minutes. After the green body is dried, it is demolded and sintered in a reducing atmosphere. The sintering temperature of the film tu...

Embodiment 3

[0035] 5 parts by weight of 3 μm silica powder, 5 parts by weight of water and 0.01 parts by weight of sodium carboxymethylcellulose are mixed to configure slurry 1; then 90 parts by weight of silica powder with an average particle diameter of 30 μm, 10 parts by weight Slurry 2 was prepared by mixing silica powder with a particle size of 1 μm, 100 parts by weight of water, and 0.2 parts by weight of sodium carboxymethylcellulose. Slurry 1 and Slurry 2 were mechanically stirred for 3 hours respectively to make a uniform slurry. Start the centrifugal membrane tube forming machine, inject the slurry 1 into the high-speed rotating plexiglass tube, the tube speed is 7000rpm, rotate for 10 minutes, the slurry is dehydrated under the action of centrifugal force, and the silica particles in the slurry are attached On the inner wall of the tube mold, inject slurry 2 again, rotate the tube at a speed of 5000rpm for 5 minutes, and under the action of centrifugal force, the inorganic powd...

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Abstract

An inorganic membrane pipewith dual-layer control membrane is prepared through preparing slurry A from small basic material particles, suspending agent, disperser and carrier, preparing slurry B from granular basic material, suspending agent, disperser and carrier, filing the slurry A in the pipe mould, rotating for centrifugal shaping, filling the slurry B in the pipe mould, rotating for centrifugal shaping, baking, demoulding and sintering.

Description

technical field [0001] The invention relates to the field of inorganic membrane preparation in the field of inorganic functional materials, in particular to a double control membrane layer inorganic membrane tube and a preparation method thereof. Background technique [0002] Inorganic membranes are divided into ceramic membranes and metal membranes. Ceramic membranes have the characteristics of high temperature resistance, acid and alkali resistance, no bacterial erosion, high strength, and easy regeneration. The metal film has higher mechanical strength and excellent thermal conductivity than the ceramic film, especially the metal film has good toughness and is easy to seal into components. Therefore, inorganic membranes have been widely used in the fields of machinery, electronics, chemistry, atomic energy, medicine and health, biology, etc., for the separation, clarification, and sterilization of fluids. [0003] The membrane separation effect of inorganic membrane sepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D69/04
Inventor 隋贤栋黄肖容
Owner 广州净易环保科技有限公司