超重力湿式氧化法脱除焦炉煤气中硫化氢  

Experimental study on hydrogen sulfide removal from coke oven gas in a rotating packed bed by wet oxidation

作　　者：祁贵生[1] 刘有智[1] 王焕[1] 焦纬洲[1] 

机构地区：[1]中北大学山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《化工进展》2014年第4期1045-1049,1066,共6页Chemical Industry and Engineering Progress

基　　金：山西省科技攻关计划(工业)(20130321035-02);山西省高等学校科技创新项目(2013128)

摘　　要：以H2S、CO2和空气模拟焦炉煤气,以超重机为脱硫设备,采用湿式氧化法脱除焦炉煤气中的H2S,研究了超重力因子、液气比、气液接触时间、原料气中H2S含量等工艺参数对脱硫率的影响规律,结果表明:脱硫效率随着超重力因子、液气比、气液接触时间和原料气中H2S浓度的增大而增大。确定了适宜的工艺参数,在气液接触时间为0.15 s的条件下,获得了98%以上的脱硫效率,CO2的脱除率稳定在1.0%左右,超重力法脱硫技术实现了高效、快速脱硫。在生产现场建成了处理气量为10000 m3/h的工程化超重力湿式氧化法脱硫装置,运行结果显示:超重力湿式氧化法脱除焦炉煤气中H2S技术具有脱硫效率高、气液接触时间短、操作弹性大、设备体积小等优点,H2S脱除率可稳定在90%以上,应用前景广阔。In this paper, a mixture of hydrogen sulfide, carbon dioxide and air was used as the simulated coke oven gas, and desulfurization experiments by wet oxidation were performed in a rotating packed bed. The influences of high gravity factor, liquid-gas ratio, reaction time and hydrogen sulfide content in feed gas on desulfurization effect were studied. The removal efficiency of hydrogen sulfide increased with increasing high gravity factor, liquid-gas ratio, reaction time and hydrogen sulfide content in feed gas. The removal efficiency of hydrogen sulfide could reach more than 98% and that of CO2 maintained about 1.0% under appropriate operating conditions in which reaction time was 0.15s. Hydrogen sulfide removal in a rotating packed bed by wet oxidation was efficient and rapid. An industrial unit of hydrogen sulfide removal from coke oven gas in a rotating packed bed was built at plant site and gas flow rate could reach 10000 m3/h. The results showed that the technology of hydrogen sulfide removal from coke oven gas in a rotating packed bed had advantages of high desulfurization efficiency, short gas-liquid reaction time, operating flexibility and small unit size. The desulfurization efficiency of H2S could be stabilized at above 90%, showing bright prospect of the technology.

关 键 词：焦炉煤气 脱硫 超重力 湿式氧化法 硫化氢 

分 类 号：TQ522.59[化学工程—煤化学工程]