Ceramic fiber filtering tube, preparation method and pressurization and suction forming device

A ceramic fiber and molding device technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of high one-time investment in electrostatic dust removal, inability to purify toxic and harmful gases, and uneven density of large-sized products. Improve thermal shock performance and corrosion resistance, uniform density, and improve service life

Active Publication Date: 2019-07-23
HEFEI HEYI ENVIRONMENTAL PROTECTION TECH ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bag-type dust collector cannot withstand the high-temperature corrosion of the exhaust gas. The electrostatic precipitator has problems such as high one-time investment, large floor space and insulation. The ceramic membrane made by sintering ceramic powder has low porosity, large air resistance, and is easy to block and difficult to clean. regeneration
Moreover, the above-mentioned technologies can only remove dust, but cannot purify toxic and harmful gases.
[0004] Ceramic fiber filter membrane has the advantages of high temperature resistance, good thermal stability, large porosity, high separation precision, and chemical corrosion resistance. The concentration of the slurry prepared in the medium is constantly changing, and the operating conditions are not easy to control, resulting in strength defects of the formed large-sized products due to uneven compactness

Method used

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  • Ceramic fiber filtering tube, preparation method and pressurization and suction forming device
  • Ceramic fiber filtering tube, preparation method and pressurization and suction forming device
  • Ceramic fiber filtering tube, preparation method and pressurization and suction forming device

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Effect test

Embodiment 1

[0043] Such as figure 1 , figure 2As shown, a ceramic fiber filter tube pressurized suction forming device, the forming device includes a forming die 6, a pressurizing pump 2, a batching tank 1, a vacuum pump 9, a vacuum filtrate tank 7, and the forming die 6 includes Inner formwork 15, upper formwork 12, lower formwork 18, filter cloth 14, blank tube cavity 13, described filter cloth 14, blank tube cavity 13 are arranged between inner formwork 15, upper formwork 12 respectively, described filter cloth 14 is arranged on the inner formwork 15, the lower formwork 18 and the upper formwork 12 are connected by threads, the upper and lower flange surfaces of the inner formwork 15 are respectively provided with sealing gaskets 17, and the top of the upper formwork 12 A quick fitting 11 is provided for adding water or slurry. The quick fitting 11 is connected to the booster pump 2, and the booster pump 2 is connected to the batching tank 1, and is adjusted by the return valve 4 and...

Embodiment 2

[0059] In this embodiment, a ceramic fiber filter tube with high temperature resistance, corrosion resistance and catalytic function is prepared, and the specific process is as follows:

[0060] (1) Fiber pretreatment:

[0061] The aluminum silicate fibers and zirconia fibers were sheared and crushed respectively, sieved to obtain short fibers with a length of 300 μm, and then washed with 5% sodium hydroxide solution at 35°C, filtered and rinsed with pure water until neutral, 110 ℃ drying hour stand-by.

[0062] (2) Preparation of slurry:

[0063] In the batching tank 1 with stirring, add 25kg of pure water, then add 10.5kg of nano-silica sol with a solid content of 20% and a particle size of 20nm, and 4kg of nano-zirconia sol with a solid content of 15% and a particle size of 20nm , the solid content is 20%, the particle diameter is 20nm catalytic gamma nano-alumina sol 10kg, PAA1.5kg, antifoamer 0.2kg specially for ceramics, stirring down to pH=3, adding the zirconia of st...

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Abstract

The invention discloses a ceramic fiber filtering tube, a preparation method and a pressurization and suction forming device. The pressurization and suction forming device comprises a forming mold, apressurization pump, a dosage bunker, a vacuum pump and a vacuum filtrate tank, wherein the forming mold comprises an inner template, an upper template, a lower template, filter cloth and a blank tubecavity; the filter cloth and the blank tube cavity are arranged between the inner template and the upper template respectively; the filter cloth is arranged on the inner template; the lower templateis connected with the upper template; the upper and lower flange faces of the inner template are provided with sealing gaskets respectively; the top of the upper template is provided with a quick coupler for charging water or slurry; the quick coupler is connected with the pressurization pump; the pressurization pump is connected with the dosage bunker; the middle part of the lower template is provided with a water outlet for discharging water or slurry; the water outlet is connected with the vacuum filtrate tank; the vacuum filtrate tank is connected with the vacuum pump; a vacuum pressure gauge and a blow-off valve are arranged between the vacuum filtrate tank and the vacuum pump. The pressurization and suction forming device adopts a pressurization forming and suction sizing demolding form, is simple in structure, is convenient for forming, and is convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of gas dust removal and purification, and in particular relates to a ceramic fiber filter tube, a preparation method and a pressurized suction molding device. Background technique [0002] With the rapid development of metallurgy, machinery and chemical industries, the waste gas discharged into the atmosphere every year is not only high in temperature, but also contains a large number of fine impurity particles of dust and harmful chemicals, which cause environmental pollution, greenhouse effect, energy crisis, etc. the cause of the problem. Therefore, the dust removal and purification treatment of these gases has become the key to alleviating environmental problems. As the country's air pollution control requirements become increasingly strict, the types of pollutants that are restricted to be discharged are gradually increasing, and the emission control requirements for PM2.5 and nitrogen oxides have been...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/54B01D53/86B01D53/60B01D39/20
CPCB01D39/2082B01D46/546B01D53/8637B01D2239/0407B01D2239/0492
Inventor 杨家奎张锦海陈华锋郭磊徐鑫席颖韩晓春汪为忠
Owner HEFEI HEYI ENVIRONMENTAL PROTECTION TECH ENG
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