AS Process For Removal Of Hydrogen Sulfide In Coke Oven Gas Technical Improvement

Shanxi coking recovery plant using AS desulfurization process has been runningfor13years, the process shows some advantages in the production process, but there arestill system blocked seriously, short running period, the gas hydrogen sulfide removal isnot thorough and other series of questions.This paper starts with the analysis of AS desulfurization process, various factorsaffecting the desulfurization, desulfurization, temperature of liquid flow rate, liquidconcentration desulfurizing solution quality and the quantitative analysis, provides thebasis to reduce the content of hydrogen sulfide gas, and in order to improve theprocessing ability of desulfurization tower, the gas hydrogen sulfide desulfurization towerdesign treatment capacity is increased from4.1g/Nm3to5.5g/Nm3, the basic heatbalance and material balance were in desulfurization system, on the desulfurization,ammonia evaporation system through expansion calculation, find out the effective ways toimprove the desulfurization efficiency: one is to improve the desulfurization the washingliquid, two are part of the heat exchanger was revamping; also blocked in order to solvethe problem of system, in the solution system has oil removal by various means, oilremoval effectIn addition to implement transformation through oil desulfurization systemreconstruction and solution of the system, not only greatly reduces the net gas H2Scontent, improve the desulfurization efficiency, and prolong the operation cycle ofdesulfurization system. In addition, this paper also to cope with the increasingly seriousenvironmental requirements after the feasible proposals...