Low-rank coal low-temperature pyrolysis tar gas recycling equipment

Abstract

The invention relates to the field of low-rank coal low-temperature pyrolysis, in particular to low-rank coal low-temperature pyrolysis tar gas recycling equipment. The low-rank coal low-temperature pyrolysis tar gas recycling equipment comprises a high-temperature electric dust remover, a high-temperature cyclone separator, a cooling tower, an electric tar trapper, an induced draft fan, a rotary trapping collector, a tar collecting pond, a tar delivery pump, a tar storage tank and a tar cooling pump which are sequentially arranged from the right to the left at intervals. Two high-temperature electromagnetic valves are respectively arranged on pipelines, the induced draft fan and the electric tar trapper are communicated with each other via the corresponding pipeline, and the induced draft fan and the rotary trapping collector are communicated with each other via the corresponding pipeline. The low-rank coal low-temperature pyrolysis tar gas recycling equipment has the advantages that the low-rank coal low-temperature pyrolysis tar gas recycling equipment is simple in structure and easy to operate, steps are reasonable, methods for matching high-temperature electric dust removal and high-temperature cyclone with each other are adopted, accordingly, dust in tar gas can be deeply removed, and the dust removal efficiency can be improved for the tar gas by means of secondary dust removal; the tar gas can be cooled by the aid of tar cooling methods instead of water cooling methods, accordingly, the purity of tar can be guaranteed, requirements of people can be effectively met, and problems in the prior art can be solved.

Description

Technical field: [0001] The invention relates to the field of low-rank coal low-temperature pyrolysis, in particular to low-rank coal low-temperature pyrolysis tar gas recovery equipment. Background technique: [0002] At present, the dust removal method of low-rank coal low-temperature pyrolysis tar gas is to use high-temperature cyclone to remove dust. The high-temperature cyclone can only remove larger particles of dust, and the dust removal effect on fine particles is not good, so that the collected tar contains more dust; tar gas tar The method of cooling is to use water cooling through the cooling tower. Since the cooling water is in direct contact with the tar gas, the tar obtained by cooling will contain a large amount of water. It is necessary to add a large number of standing equipment in the tar collection to make the tar and water again. Separation will not only increase the consumption of water resources, but also increase the area occupied by equipment and incr...

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Problems solved by technology

[0003] The invention provides a low-rank coal low-temperature pyrolysis tar gas recovery device, which has simple structure, reasonable steps, and simple operation. It adopts the matching method of high-temperature electric dust removal and high-temperature cyclone to carry out deep-level dust removal of tar gas, and the secondary dust removal improves coke The dust removal efficiency of oil and gas is improved, and the method of tar cooling instead of water cooling is used to cool the tar gas to ensure the purity of the tar, thereby removing the equipment for subsequent tar purification, reducing investment in equipment costs, shortening the production time of tar, and improving production efficiency. There is no water in the whole process The participation of the company fundamentally solves the dependence on water resources in the process of producing tar by low-temperature pyrolysis of low-rank coal, saves water, effectively prevents the pollution of water resources, improves economic benefits, meets the requirements of the national environmental protection, and more effectively meets the needs of people. needs, and solve the problems existing in the prior art

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