Technique and device for preventing deposition and blockage of tar residues of tar system

Abstract

The invention belongs to the field of coking chemical products in metallurgical coking industry and particularly relates to a technique and a device for preventing deposition and blockage of tar residues of a tar system. The technique is characterized in that fluid dredging devices are arranged at positions liable to generate deposition and blockage in a tar-ammonia water separating tank and a tar storage tank, and the fluid dredging devices are controlled by controllers to periodically work so as to eliminate the blockage phenomenon caused by the deposition of tar residue. The device comprises a first fluid dredging device and a second fluid dredging device, wherein the first fluid dredging device is of a hollow tubular structure and is arranged along the bottom part of a conical groove of the tar-ammonia water separating tank in parallel, and the second fluid dredging device is of a multi-branch tubular structure and is arranged at the bottom part of the tar storage tank in parallel. Compared with the prior art, the technique and the device have the advantages that (1) the tar residue deposition and pipeline blockage phenomena of the equipment are greatly improved; (2) the operation continuity is improved and the maintenance time is greatly decreased; (3) the operation of an ultracentrifuge is stable and the separating effect is greatly improved; and (4) the operating environment is obviously improved and the safety is high.

Description

technical field [0001] The invention belongs to the field of recycling coking chemical products in the metallurgical coking industry, and in particular relates to a process and a device for preventing tar slag deposition and clogging in a tar system. Background technique [0002] In recent years, the smokeless coal charging technology has been widely used in the metallurgical coking industry. The method is to pressurize part of the circulating ammonia water to 1.8-3.0MPa, and generate strong suction when it is injected from the bridge pipe, and suck the smoke and dust generated during the coal charging operation. Gas collecting pipe to realize smokeless coal charging. With strong suction, a lot of coal powder, coke powder, and free carbon produced by pyrolysis at the top of the carbonization chamber will enter the gas collector, which increases the tar residue content in the tar from the original 0.15% to 0.3% to 0.4% to 1%. . [0003] At present, the vertical tar and ammo...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a process and device for preventing tar residue from depositing and clogging the tar system, to overcome the deficiencies in the prior ar

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