Denitrification catalyst capable of oxidizing simple substance mercury

A denitration catalyst and single oxidation technology, which is applied in the field of denitration and can solve problems such as high technology transfer fees

Inactive Publication Date: 2012-02-01
CPI YUANDA ENVIRONMENTAL PROTECTION ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Denitrification catalyst capable of oxidizing simple substance mercury

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Embodiment 1

[0018] Honeycomb type denitrification catalyst A (referred to as catalyst A) with the ability to oxidize elemental mercury was obtained by mixing, extruding, drying, and calcining according to conventional methods. Its composition was 0.3% by mass of vanadium pentoxide, Tungsten trioxide and 0.3% manganese oxide, the rest is titanium dioxide.

Embodiment 2

[0020] Honeycomb-type denitrification catalyst B (referred to as catalyst B) with the ability to oxidize elemental mercury was prepared by mixing, extruding, drying, and calcining according to conventional methods. Its composition was 0.8% by mass of vanadium pentoxide, Tungsten trioxide and 1% chromium oxide, the rest is titanium dioxide.

Embodiment 3

[0022] Honeycomb-type denitrification catalyst C (referred to as catalyst C) with the ability to oxidize elemental mercury was obtained by mixing, extruding, drying, and calcining according to conventional methods. Its composition is 1.2% by mass percentage of vanadium pentoxide, Tungsten trioxide and 0.5% copper oxide, the rest is titanium dioxide.

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Abstract

The invention belongs to the field of denitrification, and particularly relates to a denitrification catalyst capable of oxidizing simple substance mercury, which is prepared from the following components in percentage by mass: 0.3-1.5% of vanadium pentoxide, 3-10% of tungsten trioxide, 0.3-5% of metal oxide and the balance of titanium dioxide, wherein the metal oxide is one or mixture of manganese oxide, chromic oxide, copper oxide, cerium oxide, ferric oxide, cobalt oxide, nickel oxide, zinc oxide and molybdenum oxide. The oxidation rate for simple substance mercury of the denitrification catalyst capable of oxidizing simple substance mercury is up to 65%, and the maximum denitrification rate is up to 86%.

Description

technical field [0001] The invention belongs to the field of denitration, in particular to a denitration catalyst. Background technique [0002] The 12th Five-Year Plan for Comprehensive Prevention and Control of Heavy Metal Pollution that has been issued and the soon-to-be-issued "Emission Standards of Air Pollutants for Thermal Power Plants" have included coal-fired flue gas mercury emissions in the list of restrictions. my country's mercury emission control market will start. Corresponding to this is that my country has not yet mastered the core flue gas mercury removal technology. [0003] The mercury removal technologies currently applied in thermal power plants include activated carbon adsorption mercury technology (using standard activated carbon or halogenated activated carbon as the adsorbent) and coal-fired bromine injection treatment technology. Activated carbon adsorption of mercury technology has been mature because it is mostly used to treat waste gas from wa...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01D53/58B01D53/86B01D53/60B01J23/34B01D53/64B01J23/30
Inventor 李云涛刘显彬黄锐刘伟洪燕
Owner CPI YUANDA ENVIRONMENTAL PROTECTION ENG
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