文献类型：期刊文献

英文题名：Reaction of solid sorbents with hydrogen chloride gas at high temperature in a fixed-bed reactor

作者：Dou, Binlin[1]; Chen, Bingbing[1]; Gao, Jinsheng[2]; Sha, Xingzhong[2]

机构：[1]Shanghai Univ Elect Power, Dept Environm Engn, Shanghai 200090, Peoples R China;[2]E China Univ Sci & Technol, Dept Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2005

卷号：19

期号：6

起止页码：2229

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：2005519601663);WOS:【SCI-EXPANDED(收录号:WOS:000233419100003)】；

语种：英文

外文关键词：Boundary conditions - Chemical reactors - Diffusion in gases - High temperature effects - Mathematical models - Rate constants - Reaction kinetics - Solids

摘要：The gas-solid reaction and breakthrough curves in the fixed-bed reactor are of great importance, and being influenced by a number of factors makes the prediction of these factors a difficult problem. In this study, the reaction rate between solid sorbents and hydrogen chloride gas at high temperature was first investigated. On the basis of a fixed-bed reactor, the experimental results were analyzed by the shrinking core model of diffusion and surface chemical reaction control. The results showed that reaction rates of two sorbents with hydrogen chloride gas were controlled by the combination of the surface chemical reaction and diffusion of product layers, and the reaction rates nearly keep constant within 15 h of the initial reaction period and then decrease gradually. The results of the breakthrough curves show that solid sorbents in the fixed-bed reactor are capable of reducing the HCl level to near-zero levels at 550 degrees C. The experimental results and prediction for breakthrough curves are in good agreement for two sorbents.