中文摘要：

以氧化亚铁硫杆菌培养液和酸性Fe2（SO4）3溶液为吸收剂，采用优化的工艺条件进行了H2S的脱除实验，并对微生物培养液脱H2S后的副产物硫磺的相关性质进行了测定分析，以期为工业应用中硫磺回收工艺的设计提供参考。实验结果表明：采用微生物培养液脱H2S比单纯使用酸性Fe2（SO4）3溶液的效果好，反应进行45min后，脱硫率仍可保持在90％以上；微生物培养液脱H2S后的副产物硫磺颗粒不溶于水，微溶于乙醇，完全溶于二硫化碳和四氯化碳，密度为1．90g·cm^-3，熔点为121℃；该颗粒为不规则球形，在溶液中极易发生团聚现象，加入分散剂后测得平均粒径为5．09μm；该副产物硫磺具有亲水性，在工业应用上优于具有疏水性的升华硫和酸性Fe2（SO4）3溶液脱H2S产生的硫；该副产物硫颗粒在溶液中的沉降速度为0．125×10^-2m·s^-1。

英文摘要：

The removal of hydrogen sulfide was carried out under optimized conditions, and the absorbent was bacterial cultures of Thiobacillus ferrooxidans or acid solution of Fe2（SO4）3. In order to provide valuable reference for technical design of sulfur recovery in natural gas industry, the properties of byproduct sulfur from the bio-oxidation of hydrogen sulfide were investigated. The results indicated that the efficiency of removing hydrogen sulfide by bacterial cultures was over 90% after reacting for 45 min, and higher than that by acid solution of Fe2（SO4）3. The by-product sulfur was insoluble in water, partially soluble in ethanol, and completely soluble in carbon disulfide and carbon tetrachloride. It had a specific density of 1.90 g·cm^-3 and melting point of 121℃. The shape of the particles was irregular globular, in agglomeration. The particle mean size was 5.09 μm after dispersion. The by-product sulfur was hydrophilic, and better than hydrophobic sublimed sulfur, or the by-product sulfur from hydrogen sulfide removal by acid solution of Fe2（SO4）3. The settling velocity of sulfur particles was 0. 125 × 10^-2 m ·s^-1 as shown in an intermittent sedimentation test.