Electrostatic-filtering type combined dust-cleaning equipment

Abstract

The invention discloses an electrostatic-filter compound dust remover. The dust remover consists of an electrostatic dust remover and a cloth bag dust remover which are connected in series and arranged in a shell; the front end of the electrostatic dust remover is provided with a smoke inlet; an inlet smoke box and a smoke uniform distribution device in turn; the back end of the cloth bag dust remover is connected with an outlet smoke box and a smoke outlet in turn; a guide and uniform distribution device is arranged between the electrostatic dust remover and the cloth bag dust remover; the bottoms of the electrostatic dust remover and the cloth bag dust remover are provided with a dust hopper respectively; the electrostatic dust remover is provided with a direct current electrode which is connected with a negative high-voltage direct prior supply; the cloth bag dust remover is provided with an alternating current electrode and a filter bag; and the alternating current electrode is connected with a high-voltage alternating prior power. The electrostatic-filter compound dust remover combines the advantages of the electrostatic dust remover and the cloth bag dust remover, has high dust removing efficiency, especially improves the dust removing efficiency of nano-scale dust, has low filter bag resistance (lower than 1,000 Pa), adapts to the changes of various working conditions, and can meet high standard discharge requirement (smaller than 50 mg / Nm<3>).

Description

technical field [0001] The invention relates to a dust collector, in particular to an electrostatic-filter composite dust collector, in particular, an electrostatic dust collector and a bag filter are arranged in series in a whole. It is used in flue gas dedusting in power station, metallurgy, steel, cement, chemical industry and other industries. Background technique [0002] Coal is the main source of electricity in our country. In the foreseeable next few decades, coal-fired thermal power generation will occupy a dominant position in my country's power industry for a long time. This long-term energy structure that relies on coal-fired power generation has caused serious environmental pollution. The dust particles emitted by coal-fired power plants are one of the important sources of inhalable particulate matter in my country's atmospheric environment. Inhalable particulate matter, especially particulate matter (PM2.5) with a diameter of less than 2.5 microns is an import...

AI Technical Summary

Problems solved by technology

Its characteristics are: high dust removal efficiency, stable outlet emission concentration, generally 3 ; Good adaptability to flue gas dust, not affected by dust specific resistance; dust cleaning cycle and service life of filter bags are greatly affected by flue gas dust concentration; large running resistance, generally 1500Pa-2000Pa, high operating cost; not suitable run at high temperature

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