期刊
JOURNAL OF CLEANER PRODUCTION
卷 194, 期 -, 页码 584-593出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2018.05.172
关键词
Biogas upgrading; Carbon molecular sieve membrane; Process simulation; Cost estimation; Technology feasibility
资金
- Petromaks2 programme of the Research Council of Norway (CO2Hing) [267615]
Biomethane, produced by biogas upgrading, has a great potential to replace part of the fossil fuel natural gas, and may be injected into a gas grid or used as compressed biomethane as vehicle fuel. The state-ofthe-art technologies for biogas upgrading in the European region are water scrubbing, pressure swing adsorption and chemical absorption, however, high performance carbon membranes may also have a great potential in this application. In this work, cellulose-derived hollow fiber carbon membranes were tested for CO2/CH4 separation at moderate pressures (5-20 bar), and a CO2/CH4 permeance selectivity >60 was obtained. The developed membranes were evaluated for biogas upgrading in a 1000 m(3)(STP)/h biogas plant based on HYSYS simulation and cost estimation. The results indicated that carbon membranes can be a promising candidate for biogas upgrading with a low processing cost of 0.078 $/m(3) at the feed pressure of 8.5 bar. Increased membrane performance can further reduce the cost. Moreover, a carbon membrane system can be very cost-effective for upgrading of biogas in small-scale plants of around 350 m(3)(STP)/h. (C) 2018 Elsevier Ltd. All rights reserved.
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