Honeycomb type denitration catalyst and preparation method thereof

A denitration catalyst and honeycomb technology, which are applied in the field of honeycomb denitration catalyst and its preparation, can solve the problems that the denitration capacity of the catalyst is depended on and the preparation parameters are closely related, and achieve the effects of good high temperature resistance, high denitration activity and good mechanical properties.

Active Publication Date: 2015-07-08
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the denitrification ability of the catalyst is not only directly dependent on the active components, but also closely related to the preparation parameters of its carrier and catalyst.

Method used

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  • Honeycomb type denitration catalyst and preparation method thereof
  • Honeycomb type denitration catalyst and preparation method thereof
  • Honeycomb type denitration catalyst and preparation method thereof

Examples

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Embodiment Construction

[0023] The present invention will be further described in detail below in combination with specific embodiments.

[0024] material selection

[0025] The active component of the catalyst is ferrous sulfate, or ferrous sulfate and manganese acetate.

[0026] The solvent can be water or deionized water, or other suitable solvents. In view of cost, it is preferable to use water as the solvent.

[0027] The catalyst carrier adopts anatase nano-titanium dioxide and molecular sieve. Molecular sieves may include A-type zeolite molecular sieves, X-type zeolite molecular sieves, Y-type zeolite molecular sieves, ZSM series molecular sieves, MFI molecular sieves, MOR molecular sieves, and the like.

[0028] Auxiliaries may include binders, extrusion aids and / or reinforcing agents, among others.

[0029] As the binder, clay is preferably used.

[0030] The extrusion aid preferably includes glycerin, and more preferably, the extrusion aid also includes Tianqing powder. In other embo...

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Abstract

The invention discloses a preparation method of a honeycomb type denitration catalyst. The preparation method includes a mixing step, a molding step, a drying step and a burning step. The mixing step is used for mixing various materials and a solvent to form pug with plasticity. Various materials include activated components, catalyst carriers and assistants. The molding step is used for molding the pug into honeycomb body blank. The drying step is used for drying the honeycomb body blank. The burning step is used for burning the dried honeycomb body blank to form the honeycomb type denitration catalyst. The activated components comprise ferrous sulfate, the catalyst carriers are anatase type nanometer titanium dioxide and molecular sieves, and the weight ratio of the activated components and the catalyst carrier is 1: (2-10). A denitration catalyst module has high denitration efficiency, and has certain poisoning-resistance, high temperature resistance and good mechanical strength and heat stability.

Description

technical field [0001] The present invention generally relates to a catalyst for flue gas denitration, and more specifically relates to a honeycomb denitration catalyst and a preparation method thereof. Background technique [0002] Nitrogen oxide NO X (mainly NO and NO 2 ) is one of the recognized air pollutants around the world. my country's "Twelfth Five-Year Plan" put NO X As a binding assessment index, how to scientifically and effectively control nitrogen oxides has become an urgent task in the field of air pollution control in my country. Take NH 3 Selective catalytic reduction (SCR) flue gas denitrification technology is the current technology for removing NO from flue gas. X most efficient technique. The composition, structure and related parameters of the catalyst directly affect the overall denitrification effect of the SCR system. [0003] Anatase TiO 2 It is widely used as a carrier for SCR catalysts due to the presence of SO in the SCR reaction atmosphe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38B01J35/04B01D53/86B01D53/56
Inventor 禚玉群赵博任雯陈昌和
Owner TSINGHUA UNIV
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