硫化氢
热解
化学
硫黄
无机化学
甲烷
硫化物
氢
硫化氢传感器
酸性气体
羰基硫醚
丁烷
有机化学
催化作用
作者
Dina Czajczyńska,Renata Krzyżyńska,Hussam Jouhara
标识
DOI:10.1016/j.ijhydene.2022.03.082
摘要
The article presents research on the purification process of pyrolysis gas from hydrogen sulfide. To our best knowledge, similar studies have not been performed yet on a real pyrolysis gas obtained from waste tyres, which contains huge amounts of hydrogen sulfide - average 3.6% (up to 5.1% at 420 °C). Different sorbents were tested, among them sodium hydroxide, zinc oxide, and manganese oxide. NaOH in concentration 0.05 M appeared to be the most efficient, showing ∼94% H2S removal efficiency under the conditions studied. ZnO features a better efficiency of H2S removal from hot gas (∼55%) than MnO. Furthermore, the combination of ZnO and a 0.05 M solution of NaOH was studied. The detailed composition of the pyrolysis gas was performed, too. The main components and sulfur-containing compounds, such as methyl mercaptan, carbonyl sulfide, and ethyl mercaptan, concentrations were measured. Predominantly, the gas consists of methane, hydrogen, ethane, ethene, carbon dioxide, iso-butane, and hydrogen sulfide. Aggregated concentrations of the above-mentioned exceed 80% of the gas, which makes it a very promising gaseous fuel.
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