撞击流反应器内快速生成甲烷水合物  

Study on rapid formation of methane hydrate in an impinging stream reactor

作　　者：张超越 白净[1,2] 魏源霞 史海港 李攀 常春[1,2] ZHANG Chao-yue;BAI Jing;WEI Yuan-xia;SHI Hai-gang;LI Pan;CHANG Chun(School of Chemical Engineering and Energy,Zhengzhou University,Zhengzhou 450001,China;Henan Outstanding Foreign Scientists’Workroom,Zhengzhou 450001,China)

机构地区：[1]郑州大学化工与能源学院,河南郑州450001 [2]河南省杰出外籍科学家工作室,河南郑州450001

出　　处：《高校化学工程学报》2022年第1期68-75,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(U1404519,52006200)。

摘　　要：为了快速制备甲烷水合物以利于天然气水合物法储运,在自行搭建的液相连续撞击流反应器内考察了纯水和纯水+十二烷基硫酸钠(SDS)2种体系中撞击强度、反应器内温度、初始压力对甲烷水合物快速生成的影响。实验结果表明:2种体系内撞击强度的增加可明显加快甲烷水合物的生成,在撞击强度为0.38、反应的前30 min,水合速率达到最大,速率分别为0.48,1.3 mol×h^(-1),甲烷水合率分别为28.4%,45.8%。反应器内温度的降低、初始压力的升高均可加速甲烷水合物的生成,在温度为275.15 K、压力为6 MPa、反应的前30 min,水合速率最大为1 mol×h^(-1),甲烷水合率为49.4%。同时还考察了SDS质量浓度对甲烷水合物快速生成过程的影响,确定了最佳SDS质量浓度为600 mg×L-1。In order to quickly prepare methane hydrate for natural gas hydrate(NGH)storage and transportation,the effects of impinging strength,temperature and initial pressure on the rapid formation of methane hydrate in pure water and pure water+sodium dodecyl sulfate(SDS)systems were investigated in a self-built liquid phase continuous impinging stream reactor.The experimental results show that the increase of impinging strength can obviously accelerate the formation of methane hydrate in the two systems.When the impinging strength is 0.38,the first 30 minutes of the reaction rate reaches the maximum,which are 0.48 mol×h^(-1) and 1.3 mol×h^(-1),respectively,and the methane conversions are 28.4%and 45.8%,respectively.The decrease of temperature in the reactor and the increase of initial pressure can accelerate the formation of methane hydrate.At 275.15 K and 6 MPa,the maximum reaction rate is 1 mol×h^(-1) and the methane conversion is 49.4%.Meanwhile,the effects of SDS mass concentration on the rapid formation of methane hydrate was also investigated,and the optimal SDS mass concentration was determined as 600 mg×L^(-1).

关 键 词：甲烷水合物 撞击流 水合速率 甲烷水合率 

分 类 号：TQ514[化学工程]