A kind of industrial flue gas purification method

Abstract

The present invention relates to the field of flue gas treatment, specifically a method for purifying industrial flue gas, including s1 to s4; the exhaust gas purification device used in the method includes an ammonia gas input pipe, a blower, a dust removal mechanism, a screw conveyor, a conveying mechanism, Catalytic plate, chimney, processing box and desulfurization mechanism; the mixture of ammonia gas and air can be passed through the ammonia gas input pipe with the blower, which is convenient for removing nitrate in the flue gas, and the dust removal mechanism can clean the dust in the flue gas To avoid blocking the subsequent reactor, the desulfurization mechanism realizes the removal of sulfur-containing substances in the flue gas. The flue gas desulfurization and denitrification equipment of the present invention installs the dust removal mechanism before the denitrification and desulfurization equipment to prevent dust from clogging the subsequent reaction vessel, which can make the internal gas mix more evenly and react more fully when in contact with the catalytic plate with a special structure.

Description

technical field [0001] The invention relates to the field of flue gas treatment, in particular to an industrial flue gas purification method. Background technique [0002] Industry is an important part of the secondary industry. The development of industry promotes economic development, but it also brings environmental problems. The substances containing sulfur and nitrate in industrial flue gas are more harmful. Therefore, industrial flue gas needs to be desulfurized and denitrified. , Flue gas desulfurization and denitrification technology is a boiler flue gas purification technology applied to the chemical industry where nitrogen oxides and sulfur oxides are generated; nitrogen oxides and sulfur oxides are one of the main sources of air pollution; so this technology is applied There are many benefits to ambient air purification. [0003] In daily life, because ammonia gas reacts with nitrate-containing substances without pollution, and sulfur is easily soluble in water, ...

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Problems solved by technology

[0003] In daily life, because ammonia gas reacts with nitrate-containing substances without pollution, and sulfur is easily soluble in water, it is widely used in flue gas desulfurization and denitrification. However, the existing ammonia gas passes into the flue gas, and the mixing with the flue gas is not enough. Uniformity, low reaction efficiency, and when desulfurization is carried out by directly passing flue gas into water, the contact area between water and flue gas is limited, so the removal efficiency is low, and dust removal is usually carried out during the denitrification process, which may easily cause internal blockage

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