催化还原法脱硫化氢系统实验测试研究

Experimental Study on Hydrogen Sulfide Removal by Catalytic Reduction

设计了一种催化还原法脱硫化氢并副产硫磺的系统,并针对该系统研究了混合气体温度、氧气流量、通入氧气位置(进口与脱硫装置顶部端盖的距离)及初始H2S体积分数对H2S脱除率的影响。结果表明:该系统的H2S脱除率在98%以上,随着混合气体温度的升高、氧气流量的增加或通入氧气位置与脱硫装置顶部端盖距离的增加,H2S脱除率呈先增加后减小的趋势;随着初始H2S体积分数的增加,H2S脱除率略有下降,故选择合适的混合气体温度、氧气流量、通入氧气位置及初始H2S体积分数,可显著提高该系统的H2S脱除率。

A catalytic reduction system was devised to remove hydrogen sulfide and the sulfur-related by-product of this system.The effects of the mixed gas temperature,oxygen flow rate,oxygen inlet position(the distance between the oxygen inlet and the top cover of the desulfurization unit)and volume fraction of initial H2S on the removal rate of H2S were studied.The results show that the removal rate of H2S in the system is over 98%.With the increase in the gas temperature,the oxygen flow rate or the distance between the oxygen inlet and the top cover of desulfurization unit,the H2S removal rate increases at first and then decreases;with the increase in the volume fraction of initial H2S,the H2S removal rate slightly decreases.Therefore,the optimal combinations of the mixed gas temperature,oxygen flow rate,oxygen inlet position and the volume fraction of initial H2S can significantly improve the H2S removal rate of the system.