摘要
为了考察常温、无氧下浸渍Na2CO3改性、原料气相对湿度对活性炭吸附硫化氢的促进作用,用动态吸附法分别测试了不同湿度下原活性炭和浸渍活性炭对低浓度硫化氢的吸附,同时考察了温度对该吸附过程的影响。结果表明,吸附平衡数据均符合Freund lich吸附等温方程。与原活性炭相比,浸渍活性炭的孔容和比表面积略有降低,但对硫化氢的吸附能力却显著提高,说明硫化氢与浸渍剂在活性炭表面上发生了化学反应。相对湿度增加,活性炭和浸渍活性炭对H2S的吸附能力均显著增强。温度升高,平衡吸附量均略有下降。
To investigate the enhancement of impregnation of sodium carbonate and relative humidity of the feed on the adsorption of low concentration H2S on activated carbon under anaerobic conditions at ambient temperature, the experiments of dynamic adsorption of hydrogen sulfide on activated carbon and the impregnated one were carried out under different relative humidity. The effect of temperature on adsorption processes was also investigated. The results show that the adsorption equilibrium data were fitted well with the Freundlich Isotherm. Compared with the activated carbon, the BET surface area and the micropore volume of the impregnated ones were reduced slightly while the adsorption capacity of H2S increased. This indicates that H2S reacts with the impregnant on the surface of activated carbon. When relative humidity is increased, the adsorption capacity is evidently enhanced on both of activated carbon and the impregnated one. The equilibrium adsorption capacity decreases and the breakthrough time reduce with the temperature increasing.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2006年第6期730-734,共5页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(20590365)
国家重点基础研究发展规划(973计划
2004CB719506)
关键词
硫化氢
浸渍活性炭
吸附
相对湿度
hyctrogen sulfide
impregnated activated carbon
adsorption
relative humidity
