高含硫气田采出水吸附法提锂工艺研究及应用
Research and application of adsorption-based lithium extraction technology from high-sulfur gas field produced water
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- 引用格式:
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彭杰,杨晓娇,刘刚,肖芳,李林育,李丽,金艳.高含硫气田采出水吸附法提锂工艺研究及应用[J].天然气与石油,2025,43(4):122-128.doi:10.3969/j.issn.1006-5539.2025.04.017
PENG Jie, YANG Xiaojiao, LIU Gang, XIAO Fang, LI Linyu, LI Li, JIN Yan. Research and application of adsorption-based lithium extraction technology from high-sulfur gas field produced water[J].Natural Gas and Oil,2025,43(4):122-128.doi:10.3969/j.issn.1006-5539.2025.04.017
- DOI:
- 10.3969/j.issn.1006-5539.2025.04.017
- 作者:
- 彭杰1 杨晓娇1 刘刚1 肖芳1 李林育1 李丽2 金艳2
PENG Jie1, YANG Xiaojiao1, LIU Gang1, XIAO Fang1, LI Linyu1, LI Li2, JIN Yan2
- 作者单位:
- 1. 中国石油工程建设有限公司西南分公司, 四川 成都 610041; 2. 华东理工大学国家盐湖资源综合利用工程技术研究中心, 上海 200237
1. CPECC Southwest Company, Chengdu, Sichuan, 610041, China; 2. National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, China
- 关键词:
- 气田采出水;提锂;吸附;膜分离;锰系离子筛
Gas field produced water; Lithium extraction; Adsorption; Membrane separation; Manganese-based ion sieve
- 摘要:
- 随着中国天然气产量逐步增加,气田采出水回注地层的压力也越来越大,需要采用合理的方式处理气田采出水,在解决气田采出水环境问题的同时提取气田采出水中的有价元素,获取高附加值工业产品。应用锰系离子筛吸附剂从高含硫气田采出水中提取锂,展现了良好的结构稳定性及吸附性能。气田采出水经脱硫及氧化预处理后,吸附剂吸附量从12.27 mg/g显著提升至29.80 mg/g。此外,采用“吸附+膜分离+膜提浓”整体提锂工艺的中试现场运行良好,纳滤、反渗透、电渗析膜法组合工艺展现了良好的分离浓缩效果,碳酸锂结晶过程的锂回收率超过85%,碳酸锂产品纯度符合GB/T 11075—2013《碳酸锂》中1级标准,为锰系离子筛吸附剂在气田采出水提锂应用奠定一定工业基础。
With the gradual increase in China's natural gas production, the pressure of the produced water from gas fields being reinjected into the formation is also getting greater and greater. It is necessary to adopt reasonable methods to treat the produced water from gas fields, solve the environmental problems of the produced water while extracting valuable elements from the produced water to obtain high value-added industrial products. The application of manganese-based ion sieve adsorbents to extract lithium from the produced water of high-sulfur gas fields demonstrated excellent structural stability and adsorption performance. After desulfurization and oxidation pretreatment, the adsorption capacity of the adsorbent for produced water in the gas field significantly increased from 12.27 mg/g to 29.80 mg/g. In addition, a pilot site of the overall lithium extraction process of “adsorption+membrane separation+membrane concentration” operated successfully, and the combined process of nanofiltration, reverse osmosis and electrodialysis membrane showed a good separation and concentration effect. The lithium recovery rate of the lithium carbonate crystallization process reached more than 85%, and the purity of lithium carbonate products met the lithium carbonate level 1 standard specified by GB/T 11075—2013. It lays a certain industrial foundation for the application of manganese-based ion sieve adsorbent in lithium extraction from gas field produced water.
