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

QI Guisheng,LIU Youzhi,WANG Huan,JIAO Weizhou   

  1. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology,North University of China,Taiyuan 030051,Shanxi,China
  • Online:2014-04-05 Published:2014-04-05

超重力湿式氧化法脱除焦炉煤气中硫化氢

祁贵生,刘有智,王焕,焦纬洲   

  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

Abstract: 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.

Key words: coke oven gas, desulfurization, high gravity, wet oxidation process, hydrogen sulfide

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。

关键词: 焦炉煤气, 脱硫, 超重力, 湿式氧化法, 硫化氢

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