Department of Chemical Engineering, Worcester Polytechnic Institute, Goddard Hall, 100 Institute Road, Worcester, Massachusetts 01609, United States.
Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 W Green Street, Urbana, Illinois 61801, United States.
Environ Sci Technol. 2020 Jun 16;54(12):7524-7532. doi: 10.1021/acs.est.9b07930. Epub 2020 Jun 4.
The industrial sector represents roughly 22% of U.S. emissions. Unlike emissions from fossil-fueled power plants, the carbon footprint of the industrial sector represents a complex mixture of stationary combustion and process emissions produced as a reaction byproduct of cement, iron and steel, glass, and oil production. This study quantifies the potential opportunities for low-cost carbon capture and storage (CCS) scenarios with process emissions from the U.S. industrial sector by analyzing the variabilities in point-source capture and geographic proximity to relevant sinks, specifically enhanced oil recovery (EOR) and geologic sequestration opportunities. Using a technology-agnostic cost model developed from mature CO capture technologies, costs of CCS are calculated for each of the 656 facilities considered, with application of the U.S. federal tax credit 45Q to qualifying facilities. Capture of these targeted industrial process emission streams may lead to the avoidance of roughly 195 MtCO/yr (188 MtCO/yr qualifying for 45Q). A total of 123 facilities have the potential to avoid roughly 68.5 MtCO/yr at costs below $40/tCO delivered. This could be competitive for using CO for EOR depending on the price of oil. At regional CO collection hubs, emissions of 40 MtCO/yr can be avoided within 100 miles of the existing Louisiana-Mississippi and Texas-New Mexico pipelines.
工业部门约占美国排放量的 22%。与化石燃料发电厂的排放不同,工业部门的碳足迹代表了水泥、钢铁、玻璃和石油生产过程中作为反应副产物产生的固定燃烧和工艺排放的复杂混合物。本研究通过分析美国工业部门工艺排放的点源捕集和与相关汇的地理接近程度(特别是提高石油采收率 (EOR) 和地质封存机会)的可变性,量化了具有低成本碳捕获和封存 (CCS) 情景的潜在机会。使用成熟的 CO 捕获技术开发的无技术偏见成本模型,为考虑的 656 个设施中的每一个计算了 CCS 的成本,并对符合条件的设施应用了美国联邦税收抵免 45Q。这些目标工业工艺排放流的捕获可能导致避免约 195 MtCO/yr(68.5 MtCO/yr 有资格获得 45Q)。共有 123 个设施有可能以低于 40 美元/吨 CO 的成本避免约 68.5 MtCO/yr 的排放量。这对于 CO 用于 EOR 可能具有竞争力,具体取决于石油价格。在 CO 收集区域中心,在现有路易斯安那州-密西西比州和德克萨斯州-新墨西哥州管道 100 英里范围内可以避免 40 MtCO/yr 的排放。