摘要
在膜接触器天然气脱硫实验平台上以N-甲基二乙醇胺(MDEA)水溶液为吸收剂,采用疏水性聚丙烯中空纤维膜(HFPPM)作为膜接触器,利用膜基吸收技术对天然气中的H2S进行脱除实验研究。实验结果表明:膜基吸收技术可以有效的达到天然气脱硫的目的,调节操作参数,可以使脱硫率达到99%以上;提高吸收液的浓度和流量可以同时增加H2S的脱除率η和H2S总传质系数K;进气流量的增大降低了η,K反而增大;进气压力的增大可以提高η,同时提高了K;原料气中H2S浓度增加导致η下降,同时降低了K;吸收液循环利用次数的增加降低了H2S的脱除率。为膜基吸收技术在脱除天然气中的H2S的应用提供了依据。
H2S was removed from natural gas by membrane-base absorption technology on the experiment platform with MDEA solution being selected as the absorption and hydrophobic polyacrylic hollow fiber membrane （HFPPM） being selected as a contactor. The experiment results showed that membrane-base absorption technology can meet the requirement of removing sulfur from natural gas economically. The fractional removal of H2S can get to 99% when operating parameter was adjusted, η and K increase with increasing concentration and flow rates of the absorbent; η decreases when the inlet gas flow increases, however, K increases; η and K increase at the same time when inlet gas pressure increases; increasing H2S concentration in the inlet gas leads to a reduction in η and K; the fractional removal of H2S decreases with increasing absorbent recycle number. The research can provide direction to the application of membrane-base absorption technology in removal of sulfur from natural gas.
出处
《江苏工业学院学报》
2007年第1期45-48,共4页
Journal of Jiangsu Polytechnic University
基金
江苏省高校自然科学基金(04KJB440030)
关键词
微孔膜
膜接触器
膜基吸收
天然气
脱硫
microporous membrane
membrane contactor
membrane-base absorption
natural gas
sulfur removal
