Gasifying agent and water mixing atomizing nozzle and atomizing method thereof

A technology of mixing atomization and gasification agents, which is applied in the direction of coal gasification, injection devices, liquid injection devices, etc., can solve the problem of uneconomical technical and economical steam transportation, and achieve the reduction of water injection, increase of specific surface area, and improvement of thermal efficiency Effect

Inactive Publication Date: 2020-08-11
北京国利衡清洁能源科技(集团)有限公司
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Problems solved by technology

The underground coal gasification process is generally difficult to directly transport water vapor to the ground, because the st

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  • Gasifying agent and water mixing atomizing nozzle and atomizing method thereof

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[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. ...

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Abstract

The invention discloses a gasifying agent and water mixing atomizing nozzle and an atomizing method thereof. The atomizing nozzle comprises a nozzle body with a central through hole, a central spray pipe is arranged in the central through hole, the tail end of the central spray pipe is contracted into a conical spray port, an annulus channel is arranged between the nozzle body and the central spray pipe, the central spray pipe is surrounded by the annulus channel, a guide sleeve is connected with the tail end of the annulus channel, and a mixing chamber is connected with the tail end of the guide sleeve. According to the gasifying agent and water mixing atomizing nozzle and the atomizing method thereof, by enhancing the water atomization effect and increasing the specific surface area of liquid drop, the phase interface area with coal heat and mass transfer is increased, and the combustion and gasification reaction efficiency is improved; and since the gasification agent and atomized water are simultaneously sprayed into the coal seam combustion and gasification reaction working face, the direct contact reaction with the gasification working face is achieved, the water injection volume is reduced, and the thermal efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of underground coal gasification, in particular to a gasifying agent and water mixing atomizing nozzle and an atomizing method thereof. Background technique [0002] Underground coal gasification is the process of directly injecting gasification agent into underground coal seam for combustion and gasification reaction to produce synthesis gas (or fuel gas). The gas quality is mainly affected by the distribution mode of gasification agent, oxygen concentration and gasification agent composition. . From the perspective of reaction process, underground coal gasification is similar to ground fixed bed gasification, such as Lurgi furnace. However, it is different from the ground Lurgi furnace, which generally adopts pure oxygen-steam gasification process, adjusts the temperature in the furnace by controlling the water vapor content, and controls the melting state of ash to ensure solid slag discharge. The under...

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Application Information

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IPC IPC(8): B05B7/04E21B43/295
CPCB05B7/0416E21B43/295
Inventor 徐斌张博闻张树川徐军
Owner 北京国利衡清洁能源科技(集团)有限公司
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