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Non-well underground coal gasification ignition device

An ignition device, a technology of coal gasification, which is applied in coal gasification, underground mining, construction, etc., can solve problems such as difficulty in ignition, and achieve the effects of high coal seam combustion efficiency, improved success rate, and high ignition success rate

Inactive Publication Date: 2020-05-05
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In underground coal gasification without wells, it is more difficult to ignite due to factors such as increased water content in the coal seam at the bottom of the well and no smoke exhaust from the gasification channel.

Method used

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  • Non-well underground coal gasification ignition device
  • Non-well underground coal gasification ignition device
  • Non-well underground coal gasification ignition device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The embodiments of the present invention will be further described below in conjunction with the drawings.

[0025] Such as Figure 1-7 As shown, the non-well underground coal gasification ignition device includes a gas pipeline 1, a bleed tube 2, a combustion tube 3, a first winch 4, a second winch 5, a power supply 6 and a controller 7. The gas pipeline 1 is fixedly supported in The vertical drilling is set in the intake borehole in the formation 8. The outer wall of the gas pipeline 1 is in tight contact with the inner wall of the intake borehole. The bottom of the gas pipeline 1 is connected with the coal seam roadway 9, and the bottom of the air duct 2 is open. The bleed cylinder 2 moves up and down and slides in the gas pipeline 1, the combustion cylinder 3 moves up and down in the bleed cylinder 2. The first winch 4, the second winch 5, the power supply 6 and the controller 7 are all set on the ground. The first winch A first wire rope 10 is wound on 4, the lower e...

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Abstract

The invention relates to a non-well underground coal gasification ignition device. The non-well underground coal gasification ignition device comprises a gas conveying pipeline, a gas guiding barrel,a combustion barrel, a first winch, a second winch, a power supply and a controller. The gas conveying pipeline is fixedly supported in a gas inlet drilling hole. The gas guiding barrel ascends, descends and slides in the gas conveying pipeline. The combustion barrel ascends, descends and slides in the gas guiding barrel. A first steel wire rope is wound on the first winch and is fixedly connectedwith the top of the gas guiding barrel. The second steel wire rope is wound on the second winch and is fixedly connected with the top of the combustion barrel. An electric spark system and solid fuelare arranged in the combustion barrel. A plurality of fire spraying assemblies are arranged on the circumference of the outer circumferential side wall of the combustion barrel in an array mode. Thepower supply is respectively and electrically connected with the controller, the electric spark system and the fire spraying assemblies. The controller is in respective signal connection with the electric spark system and the fire spraying assemblies. Combustion-supporting gas is conveyed to a coal seam roadway, a coal seam is ignited by means of the solid fuel, the ignition success rate is high,the flow direction of the combustion-supporting gas can be controlled, and the coal seam burning efficiency is higher.

Description

Technical field [0001] The invention relates to the technical field of underground coal gasification, in particular to an ignition device for underground coal gasification without a well. Background technique [0002] Underground coal gasification is a process in which coal in the ground is combusted in a controlled manner to generate combustible gas through thermal and chemical effects on the coal. Underground gasification gas can not only be used as fuel gas for direct civilian use and power generation, but also can be used to extract pure hydrogen or as raw material gas for synthetic oil, dimethyl ether, ammonia, and methanol. Therefore, underground coal gasification technology has good economic and environmental benefits, and greatly improves the utilization and utilization level of coal resources. It is an important research and development direction of clean coal technology in my country. [0003] Underground coal gasification is divided into two types: no-well type and well...

Claims

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Application Information

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IPC IPC(8): E21B43/295
CPCE21B43/295
Inventor 陈世达汤达祯陶树
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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