标题：Equilibrium analyses of H2S conversion during hot gas desulfurization
作者：Song, Zhanlong; Zhang, Mingyao
作者机构：[Song, Zhanlong] Shandong Univ, Natl Engn Lab Coal Combust Pollutants Reduct, Sch Energy & Power Engn, Jinan, Peoples R China.; [Zhang, Mingyao] Sou 更多
会议名称：4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE)
会议日期：JUN 18-20, 2010
来源：2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010)
关键词：coal gas composition; thermal decomposition of H2S; equilibrium analyses
摘要：The complexity of the coal gas compositions and their reactions properties affect the sulfidation of H2S with calcium-based-based sorbents, which is not easy to measure quantificationally. Using the ASPEN PLUS software, the reaction degrees between coal gas compositions can be obtained easily. The results show that the thermal decomposition of H2S is affected by temperature greatly and the higher the temperature, the less stable H2S is. Adding the H-2 composite will increase the stability of H2S. When the H-2 molar content is higher than 2.5 %, the H2S hardly dissociate. The higher the pressure, the less of H2S decomposes. CO2 and CO both can react with H2S resulting to the decrease of H2S equilibrium concentration. The water-gas-shift reaction is the most important one among the coal gas reactions. If H-2 and CO2 are present in the reaction gas, CO and H2O will appear in the off-gas largely and hence the CO and H2O compound can not be introduced to the gaseous mixtures on the experiment of H2S with calcium-based sorbents to some extent.