Collaborative and deep flue gas pollutant purification system

Abstract

The invention discloses a collaborative and deep flue gas pollutant purification system and aims at providing a collaborative and deep flue gas pollutant purification system which can conduct denitration, desulfurization and dust removal on flue gas and achieve collaborative and deep removal of multiple flue gas pollutants. The collaborative and deep flue gas pollutant purification system comprises a desulfurization tower, wherein a coal-fired boiler, a denitration device, a first dust removal device, a desulfurization tower and a second dust removal device are sequentially connected through a flue gas pipeline.

Description

technical field [0001] The invention relates to a flue gas purification system, in particular to a flue gas pollutant cooperative deep purification system. Background technique [0002] my country's annual coal consumption is about 3.6 billion tons, accounting for more than 50% of the world. Coal combustion emits a large amount of particulate matter (PM), sulfur oxides (SOx), nitrogen oxides (NOx), mercury (Hg) and other pollutants, resulting in Serious air pollution problem. Coal-fired power plants are the largest coal-consuming households in my country. With the further tightening of air pollutant emission standards for coal-fired power plants, in-depth research has been carried out on key technologies for deep treatment of coal-fired flue gas pollutants at home and abroad. [0003] For example, Chinese Patent Publication Nos. CN204485558U, CN103752160A, the name of the invention is a kind of fog and dust removal equipment for realizing ultra-low emission of wet desulfuriz...

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Problems solved by technology

[0003] For example, Chinese Patent Publication Nos. CN204485558U, CN103752160A, the name of the invention is a kind of fog and dust removal equipment for realizing ultra-low emission of wet desulfurization tail gas in coal-fired power plants, and a method for realizing ultra-low emission of NOx from circulating fluidized bed boilers. Technical solutions are difficult to achieve in-depth coordinated control of multiple pollutants

[0004] For example, the Chinese Patent Publication No. CN104524948A, the name of the invention is an ultrasonic-based integrated desulfurization and dust removal technology and device. The technical solution disclosed in it also cannot synergistically remove pollutants such as NOx and Hg, and it is still in industrial demonstration stage

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