A novel desulfurization process was developed using hydroxyl-ferric oxide as the adsorbent and slurry bed as the reactor. The H₂S removal performance and cycling behaviors of the adsorbent were investigated at low temperature. The structural properties of the adsorbent in the desulfurization and regeneration process were characterized, and the mechanism of regeneration was also proposed. The synthesized adsorbent exhibited excellent H₂S adsorption capacity in a slurry bed, and the sulfur capacity of the regenerated adsorbent remained over 93%. The adsorption process conformed to the shrinkage core model. The formation of elemental sulfur and sulfuric acid was observed during regeneration, contributing to the lower H₂S removal efficiency. The adsorption reaction was mainly carried out by the exchange of sulfur anions for oxygen, and this study illustrated the feasibility of the slurry reactor in the research of desulfurization and regeneration.

中文翻译：

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低温下在浆液反应器中通过羟基铁氧化物去除硫化氢

以羟基三氧化二铁为吸附剂，浆床为反应器，开发了一种新型的脱硫工艺。在低温下研究了H ₂ S的去除性能和吸附剂的循环行为。表征了吸附剂在脱硫和再生过程中的结构性质，并提出了再生机理。合成的吸附剂在浆床中表现出优异的H ₂ S吸附能力，再生吸附剂的硫吸附能力保持在93％以上。吸附过程符合收缩核模型。在再生过程中观察到元素硫和硫酸的形成，有助于降低H ₂S去除效率。吸附反应主要通过将硫阴离子交换成氧来进行，这项研究说明了淤浆反应器在脱硫和再生研究中的可行性。