含硫物质在栲胶脱硫过程中的氧化转化  

STUDY ON TANNIN EXTRACT DESULFURIZATION REACTION USING CYCLIC VOLTAMMETRY METHOD

作　　者：董跃[1] 张卫帅[2] 凌开成[2] 申峻[2] 

机构地区：[1]太原理工大学环境科学与工程学院,太原博士生030024 [2]太原理工大学化学化工学院,太原硕士030024

出　　处：《煤炭转化》2012年第1期28-32,共5页Coal Conversion

基　　金：山西省科技攻关项目(2007032039);山西省归国留学人员基金资助项目(2008-27)

摘　　要：采用循环伏安法考察了H2S气体吸收转化生成的含硫物质HS-和Sx2-在五价钒V(V)和氧化栲胶以及两者共同作用下的氧化转化过程.结果表明,反应过程可分为初始快速反应阶段和稳定慢速反应阶段.在各反应中,含硫物质和五价钒V(V)的反应速率比其和氧化栲胶的反应速率快;另外,氧化栲胶有助于S26-的生成,五价钒V(V)能够促进含硫物质向单质硫转化.Reaction H2S absorption solution and pentavalent vanadium, tannic extract with oxidization state （Teos） was investgated using cyclic voltammetry method. The results show that H2 S is absorbed to produce bisulfide ion HS- and polysufide ion Sx2- , then these sufurcontaining substances will be oxidized by pentavalent vanadium and Teos. The reaction can be divided into initial rapid reaction stage and slow reaction stage. For different reactions, reaction rate of sufur-containing substance and pentavalent vanadium is faster than that of sufur-containing substance and Teos. Additionally, Teos contributes to the formation of S^- , and pentavalent vanadium can promote to the transformation from sulfur containing substance to elemental sulfur.

关 键 词：栲胶脱硫 含硫物质 氧化转化 

分 类 号：TQ546.5[化学工程—煤化学工程]