天然气化工
天然氣化工
천연기화공
NATURAL GAS CHEMICAL INDUSTRY
2014年
1期
16-21,31
,共7页
罗化峰%凌开成%张卫帅
囉化峰%凌開成%張衛帥
라화봉%릉개성%장위수
ADA%含硫物质%反应机理%循环伏安法%改良ADA脱硫工艺
ADA%含硫物質%反應機理%循環伏安法%改良ADA脫硫工藝
ADA%함류물질%반응궤리%순배복안법%개량ADA탈류공예
ADA%sulfur-containing substance%reaction mechanism%cyclic voltammetry%desulfurization%modified stretford process
为了从微观的角度了解改良ADA脱硫机理，采用循环伏安法研究了改良ADA脱硫工艺中含硫物质与ADA的反应机理。结果表明，溶液中ADA可以直接和仿H2S吸收液中的含硫物质发生反应，该反应过程分为初始快速反应阶段(前5s内)和慢速稳定反应阶段(5s之后)。通过对慢速稳定反应阶段中含硫物质和ADA的反应动力学研究表明，仿H2S吸收液中含硫物质和ADA反应为一级反应，速率常数为0.00175s-1。
為瞭從微觀的角度瞭解改良ADA脫硫機理，採用循環伏安法研究瞭改良ADA脫硫工藝中含硫物質與ADA的反應機理。結果錶明，溶液中ADA可以直接和倣H2S吸收液中的含硫物質髮生反應，該反應過程分為初始快速反應階段(前5s內)和慢速穩定反應階段(5s之後)。通過對慢速穩定反應階段中含硫物質和ADA的反應動力學研究錶明，倣H2S吸收液中含硫物質和ADA反應為一級反應，速率常數為0.00175s-1。
위료종미관적각도료해개량ADA탈류궤리，채용순배복안법연구료개량ADA탈류공예중함류물질여ADA적반응궤리。결과표명，용액중ADA가이직접화방H2S흡수액중적함류물질발생반응，해반응과정분위초시쾌속반응계단(전5s내)화만속은정반응계단(5s지후)。통과대만속은정반응계단중함류물질화ADA적반응동역학연구표명，방H2S흡수액중함류물질화ADA반응위일급반응，속솔상수위0.00175s-1。
In order to understand the desulfurization mechanism at microcosmic level, the reaction mechanism of sulfur-containing substances with ADA in the modified stretford process was investigated by using the cyclic voltammetry. The results showed that the ADA could directly react with sulfur-containing substances in the simulated H2S-absorbing liquid. The reaction process had a initial rapid reaction period of 5 seconds and a slow reaction period after 5 seconds. The kinetic study on the slow reaction period indicated that the reaction of sulfur-containing substances with ADA is a first-order reaction with the rate constant of 0.00175s-1.
