Coal low-temperature pyrolysis-combustion integrated gas tar preparation semi-coking system and method

A low-temperature pyrolysis and gas technology, which is applied in combustion methods, combustible gas purification, combustible gas purification/reconstruction, etc., can solve the problems of poor adjustment performance of pneumatic control valves, low flow rate of circulating materials, and complicated system operation, and achieves The effect of reducing internal ash concentration, reducing the rate of water wall wear, and sufficient heat recovery of the system

Active Publication Date: 2016-07-20
HUANENG POWER INT INC +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current circulating fluidized bed solid heat carrier pyrolysis technology adopts the external circulation method to send the circulating material into the pyrolysis furnace, which has the following problems: (1) the flow rate of the circulating material is small, and the output of the device is small; (2) the combustion furnace and the pyrolysis furnace Separately arranged, complex connecting pipelines are required between the two main equipment; (3) The adjustment performance of the pneumatic control valve set on the pipeline is poor, and the system operation is complicated, etc.

Method used

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  • Coal low-temperature pyrolysis-combustion integrated gas tar preparation semi-coking system and method
  • Coal low-temperature pyrolysis-combustion integrated gas tar preparation semi-coking system and method

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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the coal low-temperature pyrolysis-combustion integrated system for producing gas tar and semi-coke includes: smokestack 1, moving bed 2, channel 3, coal low-temperature pyrolysis furnace 4, cyclone separator 5, ceramic filter 6, gas indirect Cooler 7, electric tar collector 8, gas recirculation fan 9, circulating fluidized bed combustion furnace 10.

[0027] The circulating fluidized bed combustion furnace 10 and coal low-temperature pyrolysis furnace 4 adopt an integrated design, and the circulating material in the circulating fluidized bed combustion furnace 10 enters the two smokestacks 1 on the upper part of the furnace through internal circulation, and then falls into the moving bed 2 Finally, it enters the low-temperature coal low-temperature pyrolysis furnace 4 after passing through a passage 3 at the lower part of the moving bed 2 . The coal enters the coal low-temperature pyrolysis furnace 4 through the feeder and is mixed with high...

Embodiment 2

[0029] Such as figure 2 As shown, the coal low-temperature pyrolysis-combustion integrated system for producing gas tar and semi-coke includes: smokestack 1, moving bed 2, channel 3, coal low-temperature pyrolysis furnace 4, cyclone separator 5, ceramic filter 6, gas indirect Cooler 7, electric tar collector 8, gas recirculation fan 9, circulating fluidized bed combustion furnace 10.

[0030] The circulating fluidized bed combustion furnace 10 and the coal low-temperature pyrolysis furnace 4 adopt an integrated design, and the circulating material in the circulating fluidized bed combustion furnace 10 enters the two chimneys 1 in an internal circulation mode, falls into the moving bed 2, and passes through the moving bed. A channel 3 at the lower part of the bed 2 enters the low-temperature coal low-temperature pyrolysis furnace 4 . The coal enters the coal low-temperature pyrolysis furnace 4 through the feeder and mixes with the high-temperature circulating material to prec...

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Abstract

The invention discloses a coal low-temperature pyrolysis-combustion integrated gas tar preparation semi-coking system and method. The system comprises a smoke window, a moving bed, a gallery, a pyrolyzing furnace, a cyclone separator, a ceramic filter, a gas indirect cooler, an electric catching tar device, a gas recycling fan and circulating fluidized bed combustion furnace. The advantage that the number of recirculated materials inside a circulating fluidized boiler is large is utilized for feeding a large number of materials into the pyrolyzing furnace through the moving bed, and system output is improved; meanwhile, the recirculated materials are led out from the hearth of the combustion furnace, and abrasion to the combustion furnace is relieved. In addition, gas indirect cooling is arranged in the system, wastewater discharge is reduced, and energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention belongs to the technical field of producing gas tar and semi-coke, and in particular relates to a system and method for producing gas tar and semi-coke integrated with low-temperature pyrolysis and combustion of coal. Background technique [0002] my country is rich in coal and low in oil, and its coal production ranks first in the world in recent years. However, the traditional coal utilization is mainly for combustion power generation, combustion heat supply, etc. The utilization method is rough, the comprehensive utilization rate of coal resources is low, and at the same time, more air pollutants are emitted, which has a negative impact on the atmospheric environment. Coal is composed of macromolecules with extremely complex structures containing C, H, O, N, S and other elements. Direct combustion of coal only utilizes the fixed carbon in it, and other components with chemical properties such as volatile matter have not been effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10B49/02C10K1/02C10K1/00F23C10/02F23C10/22
CPCC10B49/02C10B53/00C10K1/002C10K1/024C10K1/026F23C10/02F23C10/22Y02P20/10Y02P20/129
Inventor 高洪培时正海唐巍肖平林伟荣李昱喆孙献斌
Owner HUANENG POWER INT INC
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