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论文类型：期刊论文

发表时间：2013-06-01

发表刊物：ENERGY & FUELS

收录刊物：SCIE、EI、Scopus

卷号：27

期号：6

页面范围：3341-3348

ISSN号：0887-0624

摘要：Hydrate-based gas separation is one of the potential methods of carbon dioxide capture from fuel gases (CO2/H-2) for an integrated coal gasification combined cycle (IGCC) power plant. In this study, the influences of selected factors, including porous properties, tetrahydrofuran (THF) concentration, sodium dodecyl sulfate (SDS) concentration, and initial pressure, of the operation system on hydrate phase equilibria, gas consumption, and gas separation are experimentally investigated by a designed orthogonal test method. It is found that the porous property is the most important factor on hydrate phase equilibria and CO2 gas separation, where the gas separation becomes better in silica gel. The presence of THF moderates the hydrate phase equilibrium and improves the gas consumption and CO2 gas recovery, and 3 mol % THF should be a suitable value for gas separation. The initial pressure has an important effect on the hydrate equilibrium pressure. With the increase of the driving force, the gas consumption increases, while the gas separation effect becomes worse.