Granular bed dust removal device

Abstract

The invention relates to the field of chemical equipment, and discloses a granular bed dust removal device which comprises a body, the body is provided with an inner cavity, the body is provided with a gas inlet, a gas outlet, a dust removal material inlet and a dust removal material outlet which are all communicated with the inner cavity, and the gas inlet and the gas outlet are arranged at intervals in the first horizontal direction; the dust removal material inlet is located above the dust removal material outlet, the inner cavity comprises a bed layer cavity, the bed layer cavity is located between the dust removal material inlet and the dust removal material outlet in the vertical direction, the bed layer cavity is located between the gas inlet and the gas outlet in the first horizontal direction, and the device further comprises a discharging spiral arranged in the inner cavity. The discharging spiral is located below the bed layer cavity and adjacent to the dust removal material outlet. The granular bed dust removal device further comprises an auxiliary discharging spiral conveying mechanism, the auxiliary discharging spiral conveying mechanism is arranged between the discharging spiral and the bed layer cavity, the auxiliary discharging spiral conveying mechanism and the discharging spiral extend in the same direction, and the auxiliary discharging spiral conveying mechanism is located over the discharging spiral.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a particle bed dedusting device. Background technique [0002] Coal pyrolysis gas contains a large amount of dust and tar. If the tar and dust are not removed from the coal pyrolysis gas in time, once the temperature drops, the dust and the condensed tar will stick together, which may cause the pyrolysis system to be forced to shut down. If the dust in the pyrolysis gas is not sufficiently removed, the dust will contaminate or block subsequent coal tar processing equipment, reducing the quality of coal tar. [0003] Existing devices for dedusting coal pyrolysis gas are mainly granular bed dedusting devices. Most of the existing granule bed dedusting devices include a main body. The material inlet and the dust removal material outlet, the granular material for dust removal enters the inner cavity from the dust removal material inlet and falls into the bed cavity, a discharge sc...

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Problems solved by technology

[0004] When the used dust removal material is discharged from the dust removal material outlet through the discharge screw, the material on the lower side of the bed cavity is easy to accumulate in some parts, which then affects the normal operation of the entire device; After the tar is adsorbed, the viscosity increases significantly, making it easier for the material to accumulate during the discharge process.

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