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Title:
IN-SITU THERMAL INJECTION SYSTEM AND PROCESS FOR COMPOSITE ORGANIC CONTAMINATION SITE
Document Type and Number:
WIPO Patent Application WO/2021/042463
Kind Code:
A1
Abstract:
An in-situ thermal injection system and process for a composite organic contamination site, the system comprising a burner (1), a combustion well (2), an insulation well (3), and a horizontal well, the burner (1) being in communication with the combustion well (2), the combustion well (2) respectively being in communication with the insulation well (3) and the horizontal well (4), a horizontal section of the horizontal well (4) being positioned below the insulation well (3), and gas injection holes (7) being disposed on the well wall of the horizontal well (4). High-temperature CO2, N2, and water vapour are used to directly contact the organic contaminant stratum, and gas driving is used, especially the characteristics of carbon dioxide gas for dissolving organic gas, for performing in-situ thermal drive desorption of composite organics; the distributed horizontal well (4) is distributed underground in a horizontal serpentine shape to heat the composite organic contaminated stratum in a circulating manner; hot gas of the composite organic matter sucked out by an extraction well (8) is used twice, firstly to insulate the stratum, and secondly to heat the air to increase the combustion gas energy; the same set of processes can couple the multiple processes of combustion gas thermal desorption, chemical/oxidation reduction, and microbial remediation to repair the contaminated stratum, and a segmented screen format is used for thermal injection.

Inventors:
WANG YU (CN)
WANG ZHIQIAO (CN)
KONG LINGRONG (CN)
ZHOU QIN (CN)
ZHANG BAOGANG (CN)
CHANG TENGTENG (CN)
Application Number:
CN2019/113667
Publication Date:
March 11, 2021
Filing Date:
October 28, 2019
Export Citation:
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Assignee:
UNIV CHINA GEOSCIENCES BEIJING (CN)
International Classes:
B09C1/06; B09C1/00; B09C1/08; B09C1/10
Domestic Patent References:
WO2013126709A12013-08-29
Foreign References:
CN205289226U2016-06-08
CN204769854U2015-11-18
CN107350278A2017-11-17
CN107685073A2018-02-13
CN109248910A2019-01-22
Attorney, Agent or Firm:
BEIJING WEIZHENG PATENT AGENCY CO., LTD. et al. (Sky-lotus Mansion Lotus-pond East Road, Xicheng District, Beijing 0, CN)
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