Title:
OXIDIZING AGENT INJECTION EQUIPMENT FOR UNDERGROUND COAL GASIFICATION PROCESS AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/035735
Kind Code:
A1
Abstract:
Disclosed is an oxidizing agent injection equipment for an underground coal gasification process, the oxidizing agent injection equipment comprising an oxidizing agent passage (10), the oxidizing agent passage (10) comprising a rotary connector (19), a coiled tubing (11), a mechanical shearing device (6) and an oxidizing agent nozzle (4) which are sequentially connected to each other in an air-impermeable manner; the mechanical shearing device (6) is used for cutting-off the oxidizing agent nozzle (4) when necessary so as to withdraw the coiled tubing (11) and the rotary connector (19) therein, allowing a ground oxidizing agent source to connect in an air impermeable manner to a center shaft of a coiled tubing winding drum (18). Therefore, oxidizing agents are still continuously injected even in a process of moving the oxidizing agent nozzle (4) by means of the coiled tubing winding drum (18) winding the coiled tubing (11). Also disclosed is an application of the oxidizing agent injection equipment in an underground coal gasification process, and the oxidizing agent injection equipment may be used for ignition in the underground coal gasification process and a normal operation process.
Inventors:
BURGER CASPER JAN HENDRIK (CN)
MIN ZHENHUA (CN)
WANG YUANLI (CN)
MIN ZHENHUA (CN)
WANG YUANLI (CN)
Application Number:
PCT/CN2016/096487
Publication Date:
March 01, 2018
Filing Date:
August 24, 2016
Export Citation:
Assignee:
ZHONGWEI SHANGHAI ENERGY TECH CO LTD (CN)
International Classes:
E21B43/295
Foreign References:
| CN104895545A | 2015-09-09 | |||
| CN105178935A | 2015-12-23 | |||
| EP2787164A1 | 2014-10-08 | |||
| AU2013101616A4 | 2014-01-16 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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