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Underground heat-gas co-production gasification equipment, and coal field fire area leading edge treatment system and method

A technology of gasification equipment and underground heating, applied in lighting and heating equipment, coal gasification, fire prevention equipment, etc., can solve problems such as a drop in the bucket and unsatisfactory effects, and achieve the effect of avoiding damage and improving controllability

Active Publication Date: 2019-05-21
CHINA UNIV OF MINING & TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

General fire extinguishing measures such as injecting yellow mud, injecting liquid nitrogen, and even injecting three-phase foam are only a drop in the bucket for the treatment of large-scale fire areas, and the effect is far from ideal. It is urgently needed for the control of large-scale coalfield fires. effective governance

Method used

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  • Underground heat-gas co-production gasification equipment, and coal field fire area leading edge treatment system and method
  • Underground heat-gas co-production gasification equipment, and coal field fire area leading edge treatment system and method
  • Underground heat-gas co-production gasification equipment, and coal field fire area leading edge treatment system and method

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0045] Such as Figure 1 to Figure 3 As shown, a kind of underground heat-gas cogeneration gasification equipment includes a borehole located at the boundary of the fire zone, the borehole passes through the rock formation 7 and the bottom of the borehole extends to the bottom plate 81 of the coal seam 8, and is installed in the borehole There is a heat extraction device 1, the heat extraction device 1 includes an annular super-long gravity heat pipe 11 placed in a borehole, the hollow tube wall of the annular super-long gravity heat pipe 11 is filled with a heat exchange working medium 12, and the annular super-long gravity heat pipe 11 The gravity heat pipe 11 is divided into a heat-absorbing section 11-1 and an adiabatic section 11-2 from bottom to top, and the hollow pipe wall of the annular super-long gravity heat pipe 11 exposed from the bore hole is co...

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Abstract

The invention discloses underground heat-gas co-production gasification equipment, and a coal field fire area leading edge treatment system and method. The equipment comprises a drill hole formed in the boundary of a fire area; a heat extraction device, a liquid carbon dioxide fracturing and anti-reflection device and a liquefied gas ignition device are mounted in the drill hole; a gasification liquid oxygen conveying sleeve, a gas collecting sleeve and a liquid carbon dioxide conveying heat insulation sleeve are arranged in an annular ultra-long gravity assisted heat pipe side by side; meanwhile, the device further comprises a fixing support plate for fixing and sealing various sleeves, and a drilling combined sleeve is integrated. The edge of the fire area is drilled into the coal bed and cracked, and underground heat-fracturing is carried out; the gas co-production gasification equipment can be used for gasifying a coal bed within a certain range on the inner wall of the drilled hole, and utilizing heat energy in the gasification process and collecting gasification products; and finally, a fire area leading edge partition area is formed, the development of coal fire is blocked,an important role is played in treatment and planning of the large-area coal field fire area, the application prospect is wide, and huge economic benefits can be brought to national energy exploitation.

Description

technical field [0001] The invention relates to an underground heat-gas cogeneration gasification equipment, a coalfield fire area front control system and method, and belongs to the field of coal fire area control and gasification. Background technique [0002] Coal is an indispensable energy source in the process of human development, and the heat generated by its combustion promotes the progress and development of the entire human race. However, its uncontrolled burning also poses a big problem. The oldest surviving coal fire in the world is Australia's Burning Mountain fire area, which scholars believe has burned for more than 6,000 years. In my country, coalfield fires are also common, among which the Xinjiang fire area is the most serious. According to the fourth fire area census conducted by the Xinjiang Coalfield Fire Fighting Engineering Bureau, the total area of ​​Xinjiang coalfield fire areas can reach 7.014 million square meters, and 4.715 million tons of coal ...

Claims

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Application Information

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IPC IPC(8): E21B43/295E21B35/00F28D15/02
CPCY02E10/10
Inventor 辛海会周福宝张亢史波波
Owner CHINA UNIV OF MINING & TECH
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