Dry pulverized coal cyclone entrained flow bed gasification furnace and gasification method thereof

A technology of entrained bed and gasifier, which is applied in the field of coal gasification equipment, can solve the problems of unstable liquid slag film, not reducing the economical efficiency of entrained bed gasification, and the short service life of dry coal powder gasifier nozzles, etc., achieving Effects of improving work safety, improving work reliability, and extending stay time

Inactive Publication Date: 2012-11-28
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a dry coal powder cyclone entrained-bed gasification furnace and its gasification method, while not reducing the economical efficiency of entrained-bed gas

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  • Dry pulverized coal cyclone entrained flow bed gasification furnace and gasification method thereof
  • Dry pulverized coal cyclone entrained flow bed gasification furnace and gasification method thereof
  • Dry pulverized coal cyclone entrained flow bed gasification furnace and gasification method thereof

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Embodiment Construction

[0022] The principle, structure and implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] like figure 2 As shown, a dry coal powder cyclone entrained bed gasifier provided by the present invention includes a gasification chamber 3, a furnace roof 2 located at the upper part of the gasification chamber, a top nozzle 1 located at the upper part of the furnace roof, and a gasification chamber arranged at the lower part of the gasification chamber The exhaust port 4 and the bottom slag discharge port 5. The top nozzle 1 is a swirl nozzle, such as image 3 As shown, the annular channel structure is adopted, the inner swirl vane 6a is arranged in the inner channel, and the outer swirl vane 6b is arranged in the outer channel; the side wall of the gasification chamber is arranged with at least one layer of four-corner tangent circles along the height direction. 2 nozzle7.

[0024] Coal by N 2 or CO 2 (dep...

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Abstract

The invention relates to a dry pulverized coal cyclone entrained flow bed gasification furnace and a gasification method thereof, which belong to the technical field of coal gasification device. The dry coal dust cyclone entrained flow bed gasification furnace comprises a top nozzle, a furnace roof, a gasification chamber, an exhaust port and a bottom slag discharge port. The top nozzle is an annular channel structure with inner, outer swirl vanes, at least one layer of a tangential O2 nozzle is arranged on the lateral wall of the gasification chamber. Pulverized coal gas flow and vapor are fed through a top nozzle in a whirling way, and the pulverized coal gas flow rotating downwards is formed in the near-wall area. The pulverized coal particles are subjected to film type gasification on a liquid slag film formed on the surface of the furnace wall under the centrifugal action of the high-speed rotation gas flow. The service life of the nozzle is effectively prolonged, the residing time of the pulverized coal in the furnace is increased, and the carbon conversion efficiency is increased; liquid slags reside on the wall surface, so as to effectively protect the wall surface; the multiple layers of the tangential O2 nozzles are arranged to effectively disperse heat load and the work reliability of the gasification furnace is increased.

Description

technical field [0001] The invention relates to a cyclone entrained-bed gasifier and a gasification method thereof, in particular to a dry coal powder cyclone-entrained-bed gasifier, which belongs to the technical field of coal gasification equipment. Background technique [0002] Coal gasification technology is the development of coal-based chemical production, coal-based liquid fuels (synthetic oil, methanol, dimethyl ether, etc.), synthetic natural gas (SNG), IGCC power generation, hydrogen production, fuel cells, direct reduction ironmaking and more The basis of process industries such as cogeneration systems is the common technology, key technology and leading technology of these industries. The coal gasification process is generally divided into three types: moving bed (also known as fixed bed), fluidized bed and entrained bed. Among them, entrained bed gasification technology has become the main development direction of modern coal gasification technology due to its ...

Claims

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Application Information

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IPC IPC(8): C10J3/48C10J3/46C10J3/50
CPCY02E20/18
Inventor 俞伟伟吕俊复杨海瑞张海刘青沈解忠李俊韦志平
Owner TSINGHUA UNIV
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