Desulfurization and denitrification method and desulfurization and denitrification device

A desulfurization, denitrification, and flue gas technology, which is applied to desulfurization and denitrification devices and the field of desulfurization and denitrification, can solve the problems of low denitration rate, difficult to find spraying points, and huge auxiliary equipment.

Pending Publication Date: 2018-06-22
TIANZHILAN ENVIRONMENT ENG
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Problems solved by technology

The disadvantage is that it is difficult to find the spraying point, the spraying amount is not easy to control, and the denitrification rate is low, which has a certain impact on the operation and service life of the boiler
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[0023] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, characteristics and effects of the desulfurization and denitrification method proposed by the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. Details are as follows.

[0024] Such as figure 1 As shown, a method for desulfurization and denitrification, comprising:

[0025] (1) Combine flue gas with H 2 o 2 Mix, and use short-wave radiation to catalyze the reaction, so that the SO in the flue gas 2 and NO X Oxidation to generate H 2 SO 4 and HNO 3 , after the reaction is over, get the flue gas after the reaction; the above-mentioned short-wave rays include one or more of ultraviolet rays, X-rays, and gamma rays; combine the flue gas with H 2 o 2 The reaction can take place after mixing, so that the SO in the flue gas 2 and N...

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Abstract

The invention discloses a desulfurization and denitrification method and a desulfurization and denitrification device, relates to the field of separation and aims to provide a desulfurization and denitrification method and a desulfurization and denitrification device which are low in temperature requirement, rapid in oxidation speed and relatively low in cost, and meet the purposes of reducing difficulties and cost of desulfurization and denitrification and improving desulfurization and denitrification efficiency. According to the main technical scheme of the invention, the desulfurization anddenitrification method comprises the following steps: (1) mixing a flue gas with H2O2, catalyzing reactions with short-wave rays, oxidizing SO2 and aNOX in the flue gas to generate H2SO4 and HNO3, and collecting a flue gas after the reaction is completed, wherein the shortwave rays comprise one or more of ultraviolet rays, X rays and gamma rays; (2) collecting H2SO4 and HNO3 in the flue gas afterthe reactions, or converting H2SO4 and HNO3 into other products.

Description

technical field [0001] The invention relates to the field of separation, in particular to a desulfurization and denitration method and a desulfurization and denitration device. Background technique [0002] At present, the traditional denitrification methods include SCR, SNCR, and ozone. Selective Catalytic Reduction (SCR) or Selective Non-Catalytic Reduction (SNCR) denitrification technology combination, as well as ozone oxidation absorption denitrification technology, are applied in the front end of desulfurization, denitrification first and then desulfurization, two sets of equipment, two processes. [0003] When the selective catalytic reduction denitrification reaction temperature is 250-450°C, the denitrification rate can reach 70%-90%. This technology is mature and reliable, and is currently widely used in the world, especially in developed countries. However, this process requires a large investment in equipment, requires preheating of flue gas, expensive catalysts ...

Claims

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Application Information

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IPC IPC(8): B01D53/79B01D53/60
CPCB01D53/60B01D53/79B01D2251/106Y02A50/20
Inventor 葛玉斌刘悦
Owner TIANZHILAN ENVIRONMENT ENG
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