铁钙氧化物高温脱硫过程中H_2和H_2O(g)效应

INFLUENCE OF H_2 AND H_2O(g) ON DESULFURIZATION OF IRON-CALCIUM OXIDE AT HIGH TEMPERATURE

研究了高温煤气中的H2 和H2 O(g)对铁钙氧化物高温脱硫行为的影响。结果表明 ,对还原态和非还原态脱硫剂 ,气氛中的H2 的影响有所不同。对前者 ,硫化气体中的H2 不利于脱硫 ;对后者 ,由于H2 首先会部分还原脱硫剂 ,提高其活性 ,因而有利于脱硫。H2 O(g)的存在对硫化和还原过程均起阻碍作用。

Influences of H2 and H2O(g) on iron-calcium oxide desulfurization were investigated at high temperature in a thermogravimetric analyzer The results showed that H2 presented different effects for reduced and fresh desulfurizers The presence of H2 in a hot gas was found to inhibit sulfidation rate for reduction, while sulfidation rate of fresh desulfurizer can be increased because of H2 reduction ability The presence of H2O(g) can inhibit reduction and sulfidation rate