Dust removal device for dust-containing and tar-containing coal gas and dust removal method for dust-containing and tar-containing coal gas

Abstract

The invention discloses a dust removal device for dust-containing and tar-containing coal gas and a dust removal method thereof. The invention relates to a dust removal device, the dust removal deviceat least comprises two dust removal units, and each dust removal unit comprises a shell, an air inlet branch pipe, a material storage dust bin and a filtering device. The storage dust bin is arrangedon one side in the shell; an air inlet cavity is formed in the upper part of the storage dust bin; a filtering device is arranged in the middle of the outer side of the storage dust bin; each filtering device comprises a material flattening rod control rod, a material flattening rod, a discharging rod, a filtering bed and a material baffle plate; the filter bed is arranged in the middle of the outer side of each material storage dust bin, a filter material is laid on a filter screen of the filtering bed, an air purifying chamber is arranged at the lower part of the filtering bed, a discharging rod assembly of a connecting rod structure is arranged in the air purifying chamber, and the material baffle connected with the discharging rod assembly is arranged on the inner side of the filtering bed, the dust removal device effectively solves the problem that the filter material is bonded by tar and loses the filtering effect, and does not influence the positive production of the device andprocess.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a dust removal device and a dust removal method for gas containing dust and tar. Background technique [0002] It is known that the dust removal methods applied to dusty and tar-containing gas are mainly electric dust removal and filter dust removal. Electric dust removal is used for dust removal of tar-containing gas, which has poor corona stability, electrode corrosion, specific resistance to dust and gas composition. The nature is sensitive to uncertainty, and it has not been used stably in the field of dust removal of high-temperature tar-containing gas. Filtration dust removal has high dust removal efficiency, such as particle bed dust collector, ceramic filter tube dust collector and metal film filter tube dust collector, etc. Changes have a greater impact. Once the gas temperature fluctuates, tar will precipitate, and the precipitated tar will stick to particles or block the filte...

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Problems solved by technology

However, when the dust collector is used for dust removal of tar-containing gas, there will be problems. When the tar-containing gas passes through the dust collector, the temperature will drop, resulting in the precipitation of tar. The precipitated tar will stick to the particles, causing the operation effect of the particle bed to drop greatly, and even stop production; Therefore, it is a basic demand of those skilled in the art to propose a dust-containing and tar-containing gas dedusting device that realizes the back-blowing regeneration of the filter material and can also perform online filter material replacement when the filter material is bonded.

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