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A hollow flat all-ceramic filter membrane element and its preparation method
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A ceramic filter membrane and ceramic membrane technology, applied in the field of ceramic components, can solve problems such as shortening the service life, and achieve the effects of strong organic solvent resistance, high strength, and convenience for high-pressure backwashing
Active Publication Date: 2019-05-10
JIANGXI BOCENT TEC CO LTD
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Problems solved by technology
However, because the existing flat ceramic membrane plug itself and the adhesive between the plug and the inorganic ceramic membrane are all organic materials, such as ABS, PPS, PPR, etc. are commonly used for ceramic membrane plugs, and epoxy resin is commonly used for adhesive bonding. Agents, polyurethane adhesives, acrylic resin adhesives or their composite and modified adhesives, these plugs and adhesives containing organic materials, in high temperature, especially containing medium strong acid and alkali and corrosive organic When used in solvents such as benzene, xylene, and water containing phenol, the range of use will be limited and the service life will be shortened because the organic material in the ceramic membrane element is easily corroded or dissolved or swelled
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Embodiment 1
[0046] The hollow flat ceramic filter element is a flat ceramic membrane made by coating a ceramic membrane liquid on a hollow flat ceramic membrane support body, using inorganic glue and ceramic plugs, and preparing and combining according to the following method steps:
[0047] Step 1, first make a hollow flat ceramic membrane support body according to the following sub-steps:
[0048] a. Weigh raw materials according to the following ratio: average particle size of 0.1-50μm, 94wt% alumina, 3wt% binder (such as tung oil) and 3wt% plasticizer (such as phthalate) Premix, then add 5wt% of premixed pore-forming agent (such as carbon powder) and 20wt% deionized water and mix evenly, then add 4wt% of premixed lubricant (such as metal soap calcium stearate ) mixed again, poured into a vacuum mud refining machine for mud refining, and then stale for 1-2 days to make mud segments,
[0049] b. Extrude the mud section into a green body with an extrusion molding machine,
[0050] c. D...
Embodiment 2
[0067] The hollow flat ceramic filter element is a flat ceramic membrane made by coating a ceramic membrane liquid on a hollow flat ceramic membrane support body, using inorganic glue and ceramic plugs, and preparing and combining according to the following method steps:
[0068] Step 1, first make a hollow flat ceramic membrane support body according to the following sub-steps:
[0069] a. Weigh raw materials according to the following ratio: average particle size of 0.1-50 μm, 97wt% alumina and silicon carbide mixture (50% each), 2wt% binder (such as methyl cellulose) and 1wt% Plasticizer (such as dioctyl adipate) is premixed, then add 4wt% pore forming agent (ammonium bicarbonate) and 15wt% deionized water to the premix and mix evenly, then add 6 wt% to the premix The lubricant (fatty acid soap) is mixed again, poured into the vacuum mud refining machine for mud refining, and then stale for 1-2 days to make mud segments.
[0070] b. Extrude the mud section into a green bod...
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Abstract
The invention discloses a hollow plate full-ceramic filter membrane element. The hollow plate full-ceramic filter membrane element comprises a plate ceramic membrane ceramic plug formed by coating a ceramic membrane solution on a hollow plate ceramic membrane supporting body and an inorganic adhesive between a membrane and the ceramic plug, wherein the hollow plate full-ceramic filter membrane element is prepared and combined according to the following methods and steps: firstly, manufacturing the hollow plate ceramic membrane supporting body according to the following substeps, then preparing the membrane solution and manufacturing the plate ceramic membrane and the ceramic plug, adhering the ceramic plug and the plate ceramic membrane by using the inorganic adhesive to be manufactured into an integrated component, carrying out high-temperature firing on the integrated component, thus manufacturing the hollow plate full-ceramic filter membrane element. The hollow plate full-ceramic filter membrane element gives play to the advantages of good stability and high strength of ceramic materials, strong high-temperature resistance, corrosion resistance and organic solvent resistance and convenience in high-pressure backwashing of the plate ceramic membrane and the like, and can be well used for treating special water quality of various organic solvents, high temperature and strong acid and alkali, so that the application range of the plate ceramic membrane can be greatly widened.
Description
technical field [0001] The invention relates to a ceramic element, in particular to a hollow flat all-ceramic filter membrane element and a preparation process. Background technique [0002] At present, in the sewage filtration industry, most of the membranes used are organic membranes, but organic membranes are usually poor in oxidation resistance, acid and alkali resistance, high temperature resistance and chemical stability, which limits the use of organic membranes. Compared with organic membranes, inorganic flat ceramic membranes that have recently appeared as filter elements have the advantages of acid and alkali corrosion resistance, high temperature resistance, organic solvent resistance, and high mechanical strength, thus greatly increasing the scope of use, and inorganic flat ceramic membranes also have Easy to wash, not easy to be polluted, etc., thus greatly increasing the service life. However, because the existing flat ceramic membrane plug itself and the adhe...
Claims
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Application Information
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