Denitration ceramic fiber filter tube and preparation method thereof

A ceramic fiber and filter tube technology, which is applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve the problems of low solid content of titanium dioxide, difficult to guarantee safety, high viscosity, etc., and achieve easy physical adsorption or chemical bonding, sticking High firmness and uniform coating effect

Active Publication Date: 2022-03-08
淄博华源科技创新发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method found in repeated experimental tests that the prepared titanium dioxide has low solid content and high viscosity; long-term storage is easy to coagulate and settle, and more importantly, it is difficult to guarantee safety

Method used

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  • Denitration ceramic fiber filter tube and preparation method thereof
  • Denitration ceramic fiber filter tube and preparation method thereof
  • Denitration ceramic fiber filter tube and preparation method thereof

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preparation example Construction

[0166] The preparation method of the nano titanium dioxide microcapsule provided by the invention comprises the following steps:

[0167] 1) In a protective atmosphere, after dispersing water, emulsifier, wetting agent, emulsifying dispersant, pH regulator and silane coupling agent modified nano-titanium dioxide powder, an aqueous phase is obtained;

[0168] After mixing the propylene-based mixed monomer, crosslinking agent, antioxidant and redox initiator, an oil phase is obtained;

[0169] 2) Under a protective atmosphere, the water phase and the oil phase obtained in the above steps are mixed again, after the reaction, the temperature is raised and matured to obtain a microemulsion containing nano-titanium dioxide microcapsules.

[0170] The present invention first disperses water, emulsifier, wetting agent, emulsifying dispersant, pH regulator and silane coupling agent modified nano-titanium dioxide powder under a protective atmosphere to obtain an aqueous phase;

[0171]...

Embodiment 1

[0257] Nano-titanium dioxide microcapsule mini-emulsion prepared by mini-emulsion polymerization process:

[0258] (1) 100 parts by weight of deionized water, 2.0 parts by weight of emulsifier NP-10 (nonylphenol polyoxyethylene ether 10), 0.1 parts by weight of wetting agent sodium diisobutylnaphthalene sulfonate, 5 parts by weight of emulsified Dispersant polyvinyl alcohol, 2.0 parts by weight of pH regulator 20-25wt.% hydrochloric acid and 40 parts by weight of silane coupling agent modified nano-titanium dioxide powder [1 part by weight of vinyltriethoxysilane+99 parts by weight of sulfuric acid method production Anatase-type nano-titanium dioxide] added to the high-speed shear emulsification pressure reactor in order, nitrogen exhausted oxygen, nitrogen pressurized to 1.0Mpa, started stirring, controlled the speed of 3000r / min, raised the temperature to 40°C, stirred for 60min, and formed the water phase;

[0259] (2) 100 parts by weight of acrylic mixed monomers (5 parts ...

Embodiment 2

[0263] Nano-titanium dioxide microcapsule mini-emulsion prepared by mini-emulsion polymerization process:

[0264] (1) 70 parts by weight of deionized water, 0.25 parts by weight of emulsifier Tween-80, 0.05 parts by weight of wetting agent sodium dialkylsuccinate sulfonate, 1 part by weight of emulsifying and dispersing agent sodium pyrophosphate, 0.002 parts by weight Parts by weight of pH regulator succinic acid and 1 part by weight of silane coupling agent modified nano-titanium dioxide powder [1 part by weight of vinyltriethoxysilane + 100 parts by weight of gas-phase method to produce nano-titanium dioxide] Add high-speed shear emulsification pressure in order Reactor, nitrogen exhaust oxygen, nitrogen pressurized to 0.5Mpa, start stirring, control the speed of 1000r / min, raise the temperature to 25°C, stir for 30minmin, to form the water phase;

[0265] (2) 80 parts by weight of acrylic mixed monomers (5 parts by weight of glycidyl methacrylate, 35 parts by weight of ac...

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Abstract

The invention provides a denitration ceramic fiber filter tube. The denitration ceramic fiber filter tube comprises a ceramic fiber filter tube and active nano titanium dioxide particles compounded on the ceramic fiber filter tube, an oxide denitration catalyst is compounded on the surfaces of the active nano titanium dioxide particles. The denitration ceramic fiber filter tube provided by the invention keeps the basic properties of high activity of active ingredients, uniform particle size and particle size distribution, large specific surface area and the like of an original denitration catalyst, the coating loading capacity is high and uniform, the bonding firmness is high, and a macromolecular copolymer layer on the surface of titanium dioxide becomes carbon dioxide, water and the like to be volatilized, so that the denitration effect is good. The porosity, the pressure drop, the strength and the like of the filter tube are not influenced, and adverse factors such as falling, failure and inactivation of active components of the existing catalyst and influence on the performance of a substrate are effectively improved. The denitration catalyst coating type denitration ceramic fiber filter tube is simple in preparation process, free of alcohol solvents, easy to control in production and high in safety, and the denitration catalyst coating type denitration ceramic fiber filter tube adapts to harsh environment-friendly denitration index requirements and has wide market prospects.

Description

technical field [0001] The invention belongs to the technical field of ceramic fiber filter tubes, and relates to a denitration ceramic fiber filter tube and a preparation method thereof, in particular to an integrated ceramic fiber filter tube for denitrification and dust removal and a preparation method thereof. Background technique [0002] In recent years, with the increasingly stringent national environmental protection requirements, the integrated process of flue gas dust removal and denitrification has become a research and development hotspot for domestic flue gas treatment. In terms of economy, due to the high temperature resistance of ceramic fibers, during the high temperature filtration process, cooling costs are saved and heat energy recovery creates benefits; the operation is stable, saving a lot of manpower maintenance and operation costs; in terms of filtration, dust emission can be controlled to 10mg / m 3 Below; the denitrification efficiency is high, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D53/86B01D53/56
CPCB01D39/14B01D53/8628Y02A50/20
Inventor 呼建强
Owner 淄博华源科技创新发展有限公司
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