CO2-based underground biochemical synthesis of natural gas coupled with geothermal energy production: Technology system, challenges, and prospects

被引：0

作者：

Hou Z. ^{[1
,2
,3
]}

Wu L. ^{[1
,2
,3
]}

Zhang L. ^{[3
]}

Fang Y. ^{[1
,2
,3
]}

Huang L. ^{[2
,4
]}

Cao C. ^{[3
]}

Guo T. ^{[5
]}

Xie Y. ^{[2
,6
]}

Luo Z. ^{[3
]}

Sun W. ^{[7
,8
]}

Luo J. ^{[2
,3
]}

Wu X. ^{[2
,3
]}

Chen Q. ^{[2
,7
]}

机构：

[1] Sino-German Energy Research Center, Sichuan University, Sichuan, Chengdu

[2] Institute of Subsurface Energy Systems, Clausthal University of Technology, Clausthal-Zellerfeld

[3] National Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Sichuan, Chengdu

[4] Sino-German Research Institute of Carbon Neutralization and Green Development, Zhengzhou University, Henan, Zhengzhou

[5] Sinopec Southwest Oil & Gas Company, Sichuan, Chengdu

[6] Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Hubei, Wuhan

[7] Yunnan Key Lab. of Sino-German Blue Mining and Utilization of Special Underground Space, Yunnan, Kunming

[8] Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Yunnan, Kunming

来源：

Natural Gas Industry | 2023年 / 43卷 / 11期

关键词：

Dual carbon; CCCUS; CCUS; Circular carbon economy; Enhanced gas recovery; Geothermal energy production; Renewable natural gas; Underground bio-methanation; Underground natural gas storage;

D O I：

10.3787/j.issn.1000-0976.2023.11.017

中图分类号：

学科分类号：

摘要：

Artificial carbon-negative technologies, i.e., carbon capture, utilization, and storage (CCUS), play a critical role in achieving China's "dual carbon" goals, but existing technologies face the challenges of high costs and low efficiency. To address these problems, a CO2-based underground biochemical synthesis of natural gas coupled with geothermal energy production technology was proposed. The coupling process includes: Geothermal energy production results in the decrease of reservoir temperature, which provides suitable temperature conditions for the biochemical synthesis of natural gas from CO2 and with the biochemical synthesis of natural gas from CO2, the reaction heat is released to increase the reservoir temperature, improving the geothermal production efficiency. The global first CCCUS technology system has the functions of underground biochemical synthesis and storage of renewable natural gas, geothermal energy production, enhanced gas recovery, and CO2 geological sequestration. Compared with the conventional artificial carbon-negative technologies, CCCUS is more advantageous in reducing carbon capture difficulty and cost and improving carbon storage efficiency, while turning wastes into treasure to achieve circular carbon resource and energy utilization and circular carbon economy. If CCCUS technology is applied in conventional gas reservoirs all over the country, in a single cycle, it can utilize 4.35×108 tons of CO2, synthesize 2 178.8×108 cubic meters of CH4, store 8 675.6×1012 kJ of energy, and generate 1 614.4×1012 kJ of geothermal energy (chemical reaction heat). After multiple cycles, the ultimate CO2 storage can be up to 22.8×108 tons.

引用

页码：181 / 190

页数：9

共 37 条

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