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首页> 外文期刊>Catalysts >Hot and Dry Cleaning of Biomass-Gasified Gas Using Activated Carbons with Simultaneous Removal of Tar, Particles, and Sulfur Compounds
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Hot and Dry Cleaning of Biomass-Gasified Gas Using Activated Carbons with Simultaneous Removal of Tar, Particles, and Sulfur Compounds

机译：使用活性炭对生物质气化气体进行热和干式清洗，同时去除焦油，颗粒和硫化合物

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This study proposes a gas-cleaning process for the simultaneous removal of sulfur compounds, tar, and particles from biomass-gasified gas using Fe-supported activated carbon and a water-gas shift reaction. On a laboratory scale, the simultaneous removal of H2S and COS was performed under a mixture of gases (H2/CO/CO2/CH4/C2H4/N2/H2S/COS/steam). The reactions such as COS + H2 → H2S + CO and COS + H2O → H2S + CO2 and the water-gas shift reaction were promoted on the Fe-supported activated carbon. The adsorption capacity with steam was higher than that without steam. On a bench scale, the removal of impurities from a gas derived from biomass gasification was investigated using two activated filters packed with Fe-supported activated carbon. H2S and COS, three- and four-ring polycyclic aromatic hydrocarbons (PAHs), and particles were removed and a water-gas shift reaction was promoted through the first filter at 320–350 °C. The concentrations of H2S and COS decreased to less than 0.1 ppmv. Particles and the one- and two-ring PAHs, except for benzene, were then removed through the second filter at 60–170 °C. The concentration of tar and particles decreased from 2428 to 102 mg Nm−3 and from 2244 to 181 mg Nm−3, respectively.
机译：这项研究提出了一种气体净化工艺，该工艺可以使用铁负载的活性炭和水煤气变换反应同时去除生物质气化气体中的硫化合物，焦油和颗粒。在实验室规模下，在混合气体（H 2 / CO / CO 2 ）下同时去除H 2 S和COS / CH 4 / C 2 H 4 / N 2 / H 2 S / COS / steam）。 COS + H 2 →H 2 S + CO和COS + H 2 O→H 2 S + CO 2 和水煤气变换反应。蒸汽的吸附能力高于没有蒸汽的吸附能力。在工作台上，使用两个装有铁负载活性炭的活性过滤器研究了从生物质气化产生的气体中去除杂质的方法。 H 2 S和COS，三环和四环多环芳烃（PAHs）以及颗粒被去除，水气变换反应通过第一个过滤器在320-350°C下进行。 H 2 S和COS的浓度降低到小于0.1 ppmv。然后在60–170°C下通过第二个过滤器除去颗粒和除苯以外的一环和二环PAH。焦油和颗粒物的浓度分别从2428降至102 mg Nm -3 和从2244降至181 mg Nm -3 。

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