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现有一逆流吸收塔,用三乙醇胺水溶液吸收混合气体中的 H 2 S ,进塔气相含 H 2 S 2.91% (体积 % ),要求吸收率不低于 99% ,操作温度 300K ,压强为 101.33kPa ,平衡关系为(见附件),进塔液体为新鲜溶剂,出塔液体中 H 2 S 组成为 0.013kmol(H 2 S)/kmol( 溶剂 ) 。已知单位塔截面上单位时间流过的惰性气体量为 0.015kmol × m -2 × s -1 ,气相体积吸收总系数 K Y a 为 0.04kmol × m -3 × s -1
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