Method for simultaneously removing PM2.5 granules, SO2 and NOx from flue gas and recycling by-product

A by-product, SO2 technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problem of reduced dust removal efficiency of PM2.5 particles, insufficient charging of PM2.5 particles, and failure of electrostatic precipitators, etc. problems, to achieve the effect of promoting oxidation absorption and removal, reducing investment and operation costs, and realizing resource utilization
CN101496986AInactive Publication Date: 2009-08-05ZHEJIANG GONGSHANG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG GONGSHANG UNIVERSITY
Publication Date
2009-08-05
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for simultaneously removing PM2.5 particles, SO2 and NOx of smoke gas and reclaiming byproducts. The smoke gas to be treated is introduced to a pulse corona electric field and absorption liquid is sprayed to purify the smoke gas at the same time; the pulse corona electric field is produced by an acicular corona wire connected with negative pulse high voltage and a netty metal electrode connected with positive pulse voltage; the absorption liquid is sprayed on the netty metal electrode to form liquid film; after the PM2.5 particles are charged, the PM2.5 particles move to the liquid film by electrostatic force and are adsorbed and caught by the liquid film; vapor and oxygen of the smoke gas are decomposed into O, OH, O3, HO2 and other oxidative free radicals; SO2 and NO of the smoke gas are oxidized into high valent state substances which are easy to absorb; subsequently, the substances are absorbed by the absorption liquid; and the reacted absorption liquid is crystallized through sensible heat drying of the smoke gas to be treated to generate reclaimable byproducts. The method realizes simultaneous removing of the PM2.5 particles, SO2 and NOx of the smoke gas and recycles the removed byproducts.
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Description

technical field

[0001] The invention relates to a flue gas treatment method, in particular to a method for simultaneously removing PM2.5 particles and SO 2 And NOx and the method of recycling the by-products. Background technique

[0002] The basic characteristics of my country's energy resources are rich in coal, poor in oil, and low in gas. The total amount of coal resources far exceeds oil and natural gas resources. my country's coal accounts for more than 70% of the country's primary energy production and consumption for a long time. In 2007, my country's total energy consumption reached 2.65 billion tons of standard coal, of which coal consumption was 1.8 billion tons of standard coal, crude oil consumption was 340 million tons, and natural gas consumption was 67.3 billion cubic meters. my country is in the stage of heavy chemical industry and the status quo of the world's factories, and the possibility of major adjustments in the industrial structure in the next few ...

Claims

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