Flue gas catalytic oxidation denitration technique and catalyst thereof

A catalytic oxidation and catalyst technology, which is applied in the fields of coal combustion, flue gas catalytic oxidation and denitrification process and its catalyst, oil-fired boilers and industrial furnaces, to achieve the effect of low cost and high efficiency
CN101352645AActive Publication Date: 2009-01-28ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH
Publication Date
2009-01-28

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Abstract

The invention provides a smoke catalysis and oxidation denitration process which takes a catalyst using TiO2 or ZrO2-TiO2 as a carrier and Co as active ingredient, uses the oxygen contained in the smoke to oxidate the NO as NO2 which is easy to be dissolved in water, utilizes the alkali solution to absorb the NO2 and remove the NOx. The process of the invention has high denitration efficiency and low cost, can selectively recover the nitrite in the denitration outgrowth and realize the resource utilization of the outcome after controlling the content of the NO2 in the oxidated smoke.
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Description

technical field

[0001] The invention relates to the technical field of air pollution control, in particular to a flue gas catalytic oxidation denitrification process and a catalyst thereof, which are suitable for coal-fired and oil-fired boilers and industrial furnaces. Background technique

[0002] Gas-phase oxidation-absorption denitrification technology uses gas-phase oxidation to reduce flue gas NO x NO with low solubility is oxidized to NO 2 , N 2 o 5 etc., and then absorb it with alkaline, oxidizing or reducing absorbing liquid. The method can not only realize denitrification and purification of waste gas, but also realize resource utilization of nitrogen oxides. The difference between various gas-phase oxidation-absorption denitrification technologies lies in the different gas-phase oxidation methods. Gas-phase oxidation methods can be divided into direct oxidation of gas-phase chemical agents, gas-phase photocatalytic oxidation, and gas-phase catalytic oxidation...

Claims

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