期刊
ISCIENCE
卷 19, 期 -, 页码 894-+出版社
CELL PRESS
DOI: 10.1016/j.isci.2019.08.039
关键词
-
资金
- U.S. National Science Foundation [CBET-1604605]
- U.S. Department of Energy (RAPID Sub-award) [DE-EE0007888-05-6]
- Kenan Institute for Engineering, Technology and Science at NC State University
- State of North Carolina
- National Science Foundation
Ethylene production via steam cracking of ethane and naphtha is one of the most energy and emission-intensive processes in the chemical industry. High operating temperatures, significant reaction endothermicity, and complex separations create hefty energy demands and result in substantial CO2 and NOx emissions. Meanwhile, decades of optimization have led to a thermally efficient, near-perfect process with similar to 95% first law energy efficiency, leaving little room for further reduction in energy consumption and CO2 emissions. In this study, we demonstrate a transformational chemical looping-oxidative dehydrogenation (CL-ODH) process that offers 60%-87% emission reduction through exergy optimization. Through detailed exergy analyses, we show that CL-ODH leads to exergy savings of up to 58% in the upstream reactors and 26% in downstream separations. The feasibility of CL-ODH is supported by a robust redox catalyst that demonstrates stable activity and selectivity for over 1,400 redox cycles in a laboratory-scale fluidized bed reactor.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据