Whether CCS technologies will exacerbate the water crisis in China? —A full life-cycle analysis
Whether CCS technologies will exacerbate the water crisis in China? —A full life-cycle analysis
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CCS技术是否会加剧中国的水危机？
DOI：
10.1016/j.rser.2020.110374
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发表时间：
2020-12
影响因子：
15.9
通讯作者：
Wu Wenjing
中科院分区：
文献类型：
--
作者：
Yang Lin;Lv Haodong;Jiang Dalin;Fan Jingli;Zhang Xian;He Weijun;Zhou Jinsheng;Wu Wenjing
碳捕集与封存（CCS）是实现减排目标不可或缺的技术，但它是一个资源密集型的过程，需要大量的水。在全生命周期分析的基础上，本文首先回顾了煤粉（PC）、天然气联合循环（NGCC）和综合气化联合循环（IGCC）电厂的取水量和耗水量，以及co2强化水回收（CO2-EWR）的产水情况。然后利用满足源汇匹配原则的35个PC电厂的实际数据进行了实例分析。研究发现：(1)碳捕集可减少1.4 Mt/a的co2排放，捕集率为90%，取水量增加174.9%，用水量分别增加150.5%（无EWR）和36.9%（有EWR）。显然，二氧化碳- ewr可以大大减少水的消耗。(2)捕集过程对水的利用贡献最大。特别是循环冷却的PC需要大量的水，而CCS只增加了一倍。相比之下，空气冷却的PC取水量相对较小，但由于在捕集过程中对高温烟气进行了冷却，其增幅扩大了9倍。③鄂尔多斯盆地和渤海湾盆地年取水量分别增加了347%和131%，而用水量分别仅增加了30.1%和45.6%。总的来说，可以考虑在捕集过程中加强冷凝水回收处理，在储存过程中加强二氧化碳ewr，以应对水资源短缺的挑战。
Carbon capture and storage (CCS) is an indispensable technology for achieving emission reduction targets, but it is a resource-intensive process requiring a large amount of water. Based on the full life-cycle analysis, this paper firstly reviews the existing research regarding not only the water withdrawal and consumption for pulverized coal (PC), nature gas combined cycle (NGCC), and integrated gasification combined cycle (IGCC) power plants, but also the water production resulting from CO2-enhanced water recovery (CO2-EWR). And then a case study is conducted using the practical data of 35 PC power plants satisfying source-sink matching principle. We found that: (1) CCS can reduce 140 Mt/a CO2emissions with a capture rate of 90%, whereas water withdrawal will increase by 174.9%, and water consumption will increase by 150.5% (without EWR) and 36.9% (with EWR). Obviously, the CO2-EWR can drastically reduce water consumption. (2) Capture process contributes most to the water usage. Particularly, PC with circulating cooling requires plenty of water while the increase rate only doubles with CCS. By contrast, although water withdrawal for PC with air cooling is relatively small, the increase rate expands 9 times due to cooling the high-temperature flue gas during capture process. (3) The annual water withdrawal inOrdos BasinandBohai Bay Basinincreases by 347% and 131%, respectively, while water consumption increases only by 30.1% and 45.6%, respectively. Overall, enhancing the condensate recovery treatment during the capture process and the CO2-EWR during the storage process can be considered to deal with water scarcity challenge.
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DOI：
10.1016/j.ijggc.2012.12.003
发表时间：
2013-03-01
影响因子：
3.9
作者：
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影响因子：
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DOI：
10.1016/j.egypro.2018.11.007
发表时间：
2018-11
期刊：
Energy Procedia
影响因子：
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作者：
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DOI：
10.11867/j.issn.1001-8166.2013.06.0718
发表时间：
2013-06
期刊：
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影响因子：
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