Ignition equipment for underground coal gasification process and its application

A kind of ignition equipment, underground gasification technology, applied in the direction of coal gasification, underground mining, combustion and ignition, etc., can solve the problem of fuel and heat supply and other problems that are not well solved

CN106121619BActive Publication Date: 2019-01-08ZHONGWEI SHANGHAI ENERGY TECH CO LTD
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-01-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides ignition equipment for a coal underground gasification process and application of the ignition equipment in the ignition phase of the coal underground gasification process. The ignition equipment comprises a conveying device, a disconnecting device, an igniter fuse, and one or more fuel packages which are sequentially connected with each other; the fuel packages are connected in series; the conveying device is a coiled tubing, a conjugation tube or an integrated signal cable; the igniter fuse penetrates through the one or more fuel packages and is used for igniting the one or more fuel packages from the end of the ignition equipment in a delayed manner; the disconnecting device is disconnected after the igniter fuse is started to withdraw the ignition equipment parts including the conveying device to safe positions at least; and the fuel packages comprise thermite and are used for being ignited to ignite an underground coal seam.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention provides an ignition device used in the underground coal gasification process, and also provides the application of the ignition device in the ignition stage of the coal underground gasification process. Background technique

[0002] The Underground Coal Gasification (UCG or ISC) process is the direct conversion of coal to product gas (also called crude synthesis gas) through the combustion and gasification of underground coal seams in the presence of Applications, including fuel production, chemical production, and power generation. Given the increasingly stringent environmental requirements of the mining industry and the associated labor and infrastructure costs, this UCG technology is undoubtedly attractive for most coal deposits.

[0003] In the process of underground coal gasification, it is usually necessary to set up a corresponding well completion system in the underground coal seam. The well completion system usually includes i...

Examples

Embodiment Construction

[0031] The invention provides an ignition device used in the underground coal gasification process, and also provides the application of the ignition device in the ignition stage of the coal underground gasification process.

[0032] Specifically, the present invention provides an ignition device for an underground coal gasification process, wherein the ignition device includes a delivery device, a disconnection device, an ignition fuse and one or more fuel packs that are sequentially connected to each other. fuel packs in series with each other, and where:

[0033] The conveying device is a coiled tubing, joint pipe or integrated signal cable;

[0034] said ignition fuse extends through one or more fuel packages and is adapted to initiate ignition of one or more fuel packages in a delayed manner from the end of the device;

[0035] said disconnecting means disconnect after activation of the ignition fuze, thereby retracting the ignition device components including the delive...