磷钼杂多化合物湿法氧化脱硫动态特性研究  

CHARACTERISTIC OF LIQUID REDOX DESULFURIZATION WITH HETEROPOLY COMPOUNDS OF PHOSPHORUS AND MOLYBDENUM

作　　者：王睿[1] 

机构地区：[1]海南大学理工学院化工系,海南海口570228

出　　处：《燃料化学学报》2001年第2期159-164,共6页Journal of Fuel Chemistry and Technology

摘　　要：采用动态氧化还原电位监测法与尾气H2 S浓度监测法 ,较为系统地研究了磷钼杂多化合物体系的脱硫动态特性 ,结果表明 :磷钼酸钠 (NaHPA)对H2 S具有较好的脱除效果 ,空气对磷钼酸钠有很好的再生效果 ;磷钼酸钠杂多化合物体系的脱硫性能与其组成密切相关—NaCl能加速体系再生、Na2 CO3 能提高体系对H2 S的吸收速率、NaVO3对脱硫体系的贡献表现在对再生过程的催化作用和对H2 S的辅助吸收 ;体系的脱硫性能随温度提高而有所降低 ,随进气H2 S浓度提高而相应降低 ,随吸收剂浓度提高而显著增强。最后 ,在单因素作用规律基础上 ,通过正交试验得到复配体系最佳配比为 :NaHPA∶NaVO3 ∶Na2 CO3 ∶NaCl=1∶1∶0 377∶5 472。The characteristics of hydrogen sulfide removal and sulfur recovery with heteropoly compound were studied systematically by dynamic redox detection method and tailgas H_2S concentration detection method It can be summarized from the investigations that sodium phosphomolybdate itself is capable of removing H_2S effectively and can be well regenerated by air subsequently The relation between desulfurization performance and absorbent composition was investigated further and it was found that any of NaCl, Na_2CO_3 or NaVO_3 has positive contribution to the absorbent system: NaCl can accelerate the regeneration of the absorbent system, Na_2CO_3 can improve the absorption rate of hydrogen sulfide and the contribution of NaVO_3 lies in its catalytic effect on the regeneration process and co-absorption effect on H_2S removal The desulfurization efficiency of the absorbent system increases markedly with the increase in absorbent concentration and decreases slightly with the increase in temperature Based on the contribution of individual component on the absorbent system, the optimum molar ratio of the absorbents was determined by orthogonal test to be NaHPA∶NaVO_3∶Na_2CO_3∶NaCl=1∶1∶0377∶5472

关 键 词：湿法氧化 脱硫 回收 磷钼杂多化合物 硫化氢 预处理 天然气 

分 类 号：TE644[石油与天然气工程—油气加工工程]