Title:
NOZZLE AND INJECTION DEVICE FOR USE IN UNDERGROUND COAL GASIFICATION PROCESS AND METHOD FOR OPERATING INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/129796
Kind Code:
A1
Abstract:
An injection device, which comprises a nozzle and which is used for an underground coal gasification process; the nozzle and the injection device are used for continuously injecting a high-concentration oxidant into an underground coal layer during the underground coal gasification process, in which case the high-concentration oxidant may be used safely and steadily to obtain a high-quality and stable product gas, while a retraction cycle and/or a retraction distance of a retraction method in the existing technology may be greatly shortened, thus achieving the continuous and steady operation of the underground coal gasification process. Also disclosed is a method for operating the injection device.
Inventors:
MIN ZHENHUA (CN)
BURGER CASPER JAN HENDRIK (CN)
WANG YUANLI (CN)
BURGER CASPER JAN HENDRIK (CN)
WANG YUANLI (CN)
Application Number:
PCT/CN2017/075718
Publication Date:
July 19, 2018
Filing Date:
March 06, 2017
Export Citation:
Assignee:
ZHONGWEI SHANGHAI ENERGY TECH CO LTD (CN)
International Classes:
E21B43/295
Foreign References:
| CN104533377A | 2015-04-22 | |||
| CN103742121A | 2014-04-23 | |||
| CN104612652A | 2015-05-13 | |||
| CN204082121U | 2015-01-07 | |||
| US20030136585A1 | 2003-07-24 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
Download PDF: