Coal-fired flue gas treatment method

Abstract

The invention discloses a coal-fired flue gas treatment method. The coal-fired flue gas treatment method comprises the steps that after undergoing heat exchange, the coal-fired flue gas undergoes dust removal treatment; then the coal-fired flue gas is exhausted from an exhaust device after being treated with an adsorbent, wherein the adsorbent comprises quicklime; dust removal treatment is carried out in a pulse type dust collector; the pulse type dust collector comprises a square shell and dust hoppers; the dust hoppers are installed below the square shell; openings are formed in the bottom surface of the square shell and the top surfaces of the dust hoppers; the square shell is communicated with the dust hoppers; filters are installed inside the square shell; dust outlets are formed in the bottoms of the dust hoppers; the adsorbent is arranged in a dry chemical catalytic treater; the dry chemical catalytic treater comprises a hollow shell, catalytic treatment boxes and an atomizer; the catalytic treatment boxes are arranged inside the hollow shell; atomization nozzles are connected above the catalytic treatment boxes and are communicated with the atomizer by an atomization pipe; and an air inlet pipe is arranged on the side wall of the hollow shell. After the coal-fired flue gas is treated, various indexes completely satisfy the Emission Standard of Air Pollutants for Boiler (GB 13271-2014).

Description

technical field [0001] The invention belongs to the field of environmental protection equipment, and in particular relates to a coal-fired flue gas treatment method, which can be used for dust removal of coal-fired boilers. Background technique [0002] With the development of modern industry, the impact of dust on the environment and human health is becoming more and more serious. Dust pollution is effectively controlled. In recent years, the country has paid more and more attention to environmental protection and the phenomenon of global warming has become serious. In order to advocate energy saving and carbon reduction, the environmental protection industry is booming. It has become the consensus of all to develop and purify the living environment of human beings. In order to maintain a clean production environment, places polluted by dust must be cleaned up in time. Dust collectors, especially bag-type dust collectors, are widely used in metallurgy, building materials, ...

AI Technical Summary

Problems solved by technology

However, the existing bag filter has disadvantages such as unsatisfactory cleaning effect, low purification efficiency, short filter bag life, and heavy maintenance workload, which seriously affects the normal and efficient use of the filter. The structure of the existing filter is improved to make dust removal convenient and efficient, and it is necessary to use an air blowing device to remove dust from the filter to improve the dust removal effect

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