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Hydrogen peroxide oxidation combined amino wet desulphurization and denitration method and device

A wet desulfurization and hydrogen peroxide technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of high operating costs, low denitration efficiency, low oxidation efficiency, etc., to avoid competition and save consumption. Effect

Active Publication Date: 2016-03-09
SOUTHEAST UNIV
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Problems solved by technology

[0004] Purpose of the invention: Aiming at the above-mentioned prior art, a hydrogen peroxide oxidation combined with ammonia wet desulfurization and denitrification method and its device are proposed to solve the problems of low denitrification efficiency, low oxidation efficiency and high operating costs in the desulfurization and denitrification process

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  • Hydrogen peroxide oxidation combined amino wet desulphurization and denitration method and device

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Embodiment Construction

[0022] The present invention will be further explained below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, the device of hydrogen peroxide oxidation combined with ammonia wet desulfurization and denitrification method includes primary ammonia solution absorption system Ⅰ, hydrogen peroxide oxidation system Ⅱ, solution circulation system Ⅲ, and secondary ammonia solution absorption system Ⅳ; among them:

[0024] Primary ammonia solution absorption system I includes compressor-1, valve-2, liquid storage tank-3, metering pump-4, ammonia solution absorption device-5 and demister-6. The gas inlet of the ammonia solution absorption device-5 is connected to the outlet of the compressor-1, the valve-2 is connected to the first inlet of the liquid storage tank-3, and the outlet of the liquid storage tank-3 is connected to the ammonia solution absorption device-5 through the metering pump-4 The first liquid inlet, the mist eliminator-6 is located in...

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Abstract

The invention provides a hydrogen peroxide oxidation combined amino wet desulphurization and denitration method and device. Firstly, an amino solution is used for removing sulfur dioxide with high efficiency to obtain a sulfite solution having reductibility; secondly, hydrogen peroxide is decomposed on the surface of a catalyst to obtain nitric oxide in high-activity free radical high-efficiency oxidation desulphurization gas; and finally, sulfite solution and nitric oxides are mixed and react to realize an aim of highly effectively absorbing the nitric oxides, so that a competitive relation formed by reaction of sulfur dioxide and nitric oxide with high-activity free radicals is avoided, the consumption quality of an oxidizing agent is saved, and the reductibility of the sulfite solution can be used for reducing part of the nitric oxides to obtain nitrogen. The method and the device can be used for solving the technical problems that the denitration efficiency is low, the oxidation efficiency is low, the running cost is high and the like in a traditional pollutant removing process, a liquid-phase high-efficiency removal smoke products and product recycling type desulphurization and denitration mode is built, and the classification conversion of pollutants in a two-stage tower can be realized.

Description

technical field [0001] The invention relates to a method and process for efficient hydrogen peroxide oxidation combined with ammonia wet two-stage tower desulfurization and denitrification, belonging to the field of energy and environmental protection. Background technique [0002] The environmental problems caused by coal combustion and utilization have always been valued by the international community. Governments around the world have successively implemented a series of plans to vigorously promote the basic research on the removal of sulfur dioxide and nitrogen oxides caused by coal combustion. my country is a big country with coal as its main energy source. This energy composition will not change for a long time in the future. At the same time, sulfur dioxide and nitrogen oxides emitted by coal combustion are important air pollutants. At present, my country has become the world's largest emitter of sulfur dioxide and nitrogen oxides, which poses a serious threat to my c...

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Application Information

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IPC IPC(8): B01D53/78B01D53/60
CPCB01D53/60B01D2251/106B01D2251/206B01D2258/0283Y02A50/20
Inventor 熊源泉吴波茹晋波苏银海宋杰王金涛
Owner SOUTHEAST UNIV
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