Coal powder conveying device

A pulverized coal transportation and pulverized coal technology, which is applied in the direction of granular/powdered fuel gasification and joint combustion mitigation, can solve the problem of large carrier gas into the furnace, and achieve less carrier gas usage, sufficient fluidization, and reduced load The effect of volume

Active Publication Date: 2014-05-14
CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a pulverized coal conveying device, which can effectively improve the stability of pulverized coal conveying into the furnace and the accuracy of measurement, and effectively solve the problem of large carrier gas entering the furnace.

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  • Coal powder conveying device

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 As shown, the present invention provides a pulverized coal conveying device, in which pulverized coal is mainly fed into the gasifier by means of mechanical feeding, supplemented by pneumatic conveying. The present invention comprises a coal mill 1, a pulverized coal filter 2, a screw feeder 3, an atmospheric bin 4, a lock hopper 5, a feeding bin 6, a mechanical feeding device 7, a gas cone 8, a gasification furnace 9 and a gasification The burner 10 in the furnace 9. The coal mill 1 is provided with a raw coal inlet 11, and the outlet of the coal mill 1 is connected to the inlet of the pulverized coal filter 2 through a pipeline. Located below the pulverized coal filter 2, the outlet of the pulverized coal filter 2 is connected with a screw feeder 3, an atmospheric chamber 4 and a lock bucket 5 sequentially through the pipel...

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Abstract

The invention relates to a coal powder conveying device which comprises a coal grinder, wherein a raw coal inlet is formed in the coal grinder; an outlet of the coal grinder is connected with an inlet of a coal powder filter; an outlet positioned in the lower side of the coal powder filter is connected with a spiral feeder, a normal pressure cabin and a lock bucket through pipelines in sequence from top to bottom; an outlet pipeline of the lock bucket is communicated with a carrier gas pipeline and is connected with an inlet of a feeding cabin above the coal powder filter through the carrier gas pipeline; an outlet in the bottom of the feeding cabin is connected with a mechanical feeding device below the feeding cabin; an outlet positioned in the lower side of the mechanical feeding device is connected with a gas coning part and a burning nozzle of a gasification furnace through pipelines in sequence from top to bottom, and coal powder is sprayed into the gasification furnace through the burning nozzle; the burning nozzle of the gasification furnace is lower than the feeding cabin, and the lock bucket is arranged below the burning nozzle of the gasification furnace. The coal powder conveying device has the characteristics of stability in coal powder conveying, accuracy in metering, energy conservation, consumption reduction and the like, and is capable of reducing carrier gas entering the furnace.

Description

technical field [0001] The invention relates to a conveying device in the field of coal chemical industry, in particular to a pulverized coal conveying device used in entrained bed pulverized coal gasification. Background technique [0002] Coal gasification is the core technology for clean and efficient utilization of coal, and it is also a leader in process industries such as coal chemical industry, integrated coal gasification combined cycle power generation, and direct reduction ironmaking. Pulverized coal gasification has the advantages of wide adaptability to coal types, high effective gas composition, and low specific coal consumption and specific oxygen consumption. It is the key technology in pulverized coal entrained bed gasification technology. There are two main types of conveying devices currently used in entrained-bed pulverized coal gasification: one is represented by Shell; the other is represented by GSP. These two pulverized coal conveying devices both ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50
CPCY02E20/18
Inventor 李发林曾鑫何国锋段清兵王国房莫日根
Owner CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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