【摘要】 对比纤维液膜接触器与筛板塔的传质面积、N-甲基二乙醇胺（MDEA）与4种复配型溶剂（UDS-Ⅰ,UDS-Ⅱ,UDS-Ⅲ,UDS-Ⅳ）对有机硫的溶解性能,并在纤维液膜接触器内考察操作条件对优选溶剂脱硫效果的影响。结果表明:在纤维液膜接触器内以UDS-Ⅳ为优选溶剂脱除液化气中的硫化物,可从提高传质面积、传质推动力等方面提高有机硫传质速率,从而提高有机硫脱除率;UDS-Ⅳ溶剂对总有机硫的脱除率较MDEA高45.7百分点,总有机硫在UDS-Ⅳ溶剂-液化气体系的分配比较MDEA-液化气体系增加6⁹倍;在优化的工艺条件下,UDS-Ⅳ溶剂可将焦化液化气的H₂S和总硫分别脱除至1mg/m³和240mg/m³以下,总有机硫脱除率高达93%以上。更多还原

【Abstract】 The mass transfer areas of the fiber film contactor and the sieve plate tower,and the solubility for organosulfurs of N-methyldiethanolamine（MDEA）and formulated solvents（UDS-Ⅰ,UDS-Ⅱ,UDS-Ⅲ,UDS-Ⅳ）were compared.In addition,the influence of operation conditions on the desulfurization performance of the preferred formulated solvent UDS-Ⅳ was investigated.The results indicate that the process combining UDS-Ⅳ and a fiber film contactor can increase the removal rate for organic sulfurs from LPG with improved mass transfer area and driving force.The removal rate for total organosulfur of UDS-Ⅳ solvent is 45.7percentage points higher than that of MDEA.Meanwhile,the distribution ratios of organosulfurs in UDS-Ⅳ solvent-LPG system are found 7—10times as much as those in MDEA-LPG system.Under optimum operation conditions,UDS-Ⅳsolvent can reduce the contents of H₂ S and total sulfur of the LPG to less than 1and 240mg?m3,respectively,and the removal efficiency for total organosulfur is above 93%.更多还原