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Coal pyrolysis device

A technology of coal pyrolysis and pyrolysis reaction, applied in the field of coal chemical industry, can solve problems such as complex process equipment and poor system operation stability

Pending Publication Date: 2019-02-19
内蒙古港原化工有限公司
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Problems solved by technology

[0004] However, in the prior art, coal drying, pyrolysis and semi-coke cooling are carried out in three systems, each system is equipped with auxiliary equipment, the process equipment is complicated, and the system operation stability is poor

Method used

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  • Coal pyrolysis device

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no. 1 example

[0041] According to the first embodiment of the present invention, the raw coal stored in the raw coal bunker 7 with a water content of 33% and a particle size of ≤5 mm is sent into the rotary dryer 11 through the screw feeder 8 for drying, and the temperature of the superheated steam of the dryer 11 is 180°C, after drying, a tail gas of 100°C and a dry coal of 90°C are produced. The dry coal is transported to the furnace top bunker 1 through a belt, and sent to the waste heat recovery pyrolysis reactor 3 through the feeder 2 . The coal falls by gravity in the waste heat recovery pyrolysis reactor 3 , and passes through the pyrolysis reaction zone 14 , the first cooling zone 12 and the second cooling zone 13 in sequence. The temperature of the pyrolysis reaction zone 14 is controlled at 500-600°C. After the pyrolysis reaction of coal occurs in this zone, pyrolysis gas at 500°C and semi-coke at 480°C are produced. The pyrolysis gas is led out from the air duct located in the p...

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Abstract

The invention discloses a coal pyrolysis device. The coal pyrolysis device comprises a raw material coal bunker, a drier connected with the raw material coal bunker and a waste heat recovery pyrolysisreactor. The waste heat recovery pyrolysis reactor internally comprises a pyrolysis reaction region and a semi-coke cooling region, the pyrolysis reaction region is connected with the drier, the semi-coke cooling region is located below the pyrolysis reaction region, and the semi-coke cooling region is connected with a semi-coke outlet. Accordingly, the waste heat recovery pyrolysis reactor adopts the integrated multi-region structure, pyrolysis and cooling are integrated into one equipment, cold coke equipment is omitted, the technological process is simplified, and the operation stability of the device is improved.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a coal pyrolysis device. Background technique [0002] Coal pyrolysis is an effective way for clean and efficient utilization of coal. The volatile matter in coal is extracted through pyrolysis to obtain tar, pyrolysis gas and semi-coke, which realizes coal classification and quality-based utilization. Low-rank coal has a large water content and needs to be dried before pyrolysis. The dry tail gas generated during the drying process contains a large amount of water vapor (about 15-30% of the raw coal mass), and the tail gas is usually discharged directly or condensed to recover steam The direct discharge of condensate causes a waste of resources, and the recovery method requires huge heat exchange equipment, which increases equipment and operating costs. After the semi-coke produced by pyrolysis is discharged from the pyrolysis furnace, it needs to be cooled to me...

Claims

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Application Information

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IPC IPC(8): C10B53/04
CPCC10B53/04Y02P20/129
Inventor 刘伦辉陈楚桥
Owner 内蒙古港原化工有限公司
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