活性炭脱除煤气中H2S的气氛影响及动力学研究  

ATMOSPHERE EFFECT AND KINETICS OF REMOVAL OF H_2S IN COAL GAS WITH ACTIVE CARBON

作　　者：张郃[1,2,3] 赵建涛[1,2,3] 方惠斌[1,2] 房倚天[2] 

机构地区：[1]中国科学院研究生院,北京100049 [2]中国科学院山西煤炭化学研究所,太原030001 [3]太原工业学院,太原030008

出　　处：《煤炭转化》2010年第3期23-28,共6页Coal Conversion

基　　金：国家高技术研究发展计划(863)项目(2007AA05Z330539);国家自然科学基金资助项目(20706055)

摘　　要：用活性炭对模拟煤气中的H2S进行催化氧化脱除,考察了反应温度、氧硫比以及煤气气氛组成对活性炭催化氧化脱除H2S行为的影响.结果表明,最佳催化脱硫温度约为180℃,氧硫比为1∶2.煤气气氛中,CO,CO2和H2含量的增加降低了活性炭的硫容,而水蒸气含量的提高则有利于脱硫反应的进行,提高了反应的脱硫效率和活性炭的硫容.对其动力学行为进行研究,结果表明,脱硫反应过程属于表面反应控制过程,给出了脱硫反应动力学方程及动力学参数.Measurements of active carbon catalytic oxidation of H2S were conducted in a laboratory-scale, fixed-bed reactor system. The main objective of this research is to have a clear insight of the effects of operating parameters on desulfurization. The O2 concentration, the reaction temperature and the atmosphere of gas on the behavior of activated carbon catalytic oxidation of H2S removal was examined. Optimum desulfurization temperature was about 180℃. Oxygensulfur ratio was 1 ： 2. With the increasing of the content of CO, CO2 and H2, the desulfurization performance of AC decreased. On the countrary, the existence of H2O favored the desulfurization. A surface reaction control kinetics model of removing hydrogen sulfide by activated carbon had been put forward. The desulfurizig kinetics expression and kinetic parameter had been developed.

关 键 词：煤气脱硫 活性炭 动力学 

分 类 号：X701.3[环境科学与工程—环境工程] TQ424[化学工程]