A coke oven flue gas treatment pipe for dust removal, desulfurization and denitrification

Abstract

The invention relates to the technical field of coke oven flue gas treatment pipelines, in particular to a coke oven flue gas treatment pipeline for dust removal, desulfurization and denitrification, including an outer pipeline, and a cooling mechanism for cooling the flue gas is installed on the outer pipeline. A cleaning mechanism for cleaning the ammonium bisulfate condensed on the cooling mechanism is installed on the outer pipeline, the cleaning mechanism conflicts with the cooling mechanism, a smoke exhaust mechanism is installed on the outer pipeline, and a A dust scraping mechanism for filtering particulate matter in the flue gas. A collection mechanism for collecting dust is installed on the dust scraping mechanism; a cooling mechanism is installed inside the outer pipeline, and sulfuric acid that condenses on the outside of the cooling mechanism is installed on the outer pipeline The cleaning mechanism for ammonium hydrogen sulfate cleaning, when there is a lot of ammonium hydrogen sulfate on the cooling mechanism, the cleaning mechanism can be activated to clean the particles of ammonium hydrogen sulfate on the cooling mechanism, improve the heat exchange effect of the flue gas, and facilitate desulfurization and denitrification .

Description

technical field [0001] The invention relates to the technical field of coke oven flue gas treatment pipelines, in particular to a coke oven flue gas treatment pipeline for dust removal, desulfurization and denitrification. Background technique [0002] A coke oven, a furnace usually made of refractory bricks and refractory blocks, is used to make coal to produce coke, a kiln that uses coal to make coke, and is the main thermal equipment for coking. Modern coke ovens refer to horizontal chamber coke ovens whose main purpose is to produce metallurgical coke and can recover coking chemical products. It consists of a furnace body and ancillary equipment and can be used for dust removal, desulfurization and denitrification in industrial industries. Special flue gas treatment pipes are used for flue gas treatment and discharge. [0003] However, at present, the coke oven flue gas treatment pipeline for dust removal, desulfurization and denitrification needs to install cooling equ...

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Problems solved by technology

[0003] However, when the coke oven flue gas treatment pipeline used for dust removal, desulfurization and denitrification is exhausted, a cooling device is first installed inside the pipeline, and the flue gas is cooled through the internal cooling pipeline when the flue gas is discharged. After the ammonium hydrogen condenses, it adheres to the heat exchange tube, and the flue gas is discharged through the chimney up to the standard. When the cooling pipe cools the flue gas for a long time, ammonium bisulfate condenses on the surface. In the cleaning mechanism, ammonium bisulfate will condense again into solid particles when the flue gas is discharged into the chimney, which often makes the particles exceed the standard and faces environmental risks; and there is no cleaning of filter attachments on the dust removal, desulfurization and denitrification inside the chimney Mechanism, it is easy to cause blockage of filter holes, which is not conducive to the discharge of flue gas after treatment

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