摘要
以加氢半焦为吸附材料,考察其不同条件下对豆油吸附规律及对不同油品的吸附能力,进一步结合N 2吸附法和压汞法,探究其初步吸油机理,并将其应用于原油吸附研究。结果表明:加氢半焦颗粒内部中空、表面多大孔,亲油疏水性明显,吸油时间≥1 h时可达到平衡,粒径大小对吸油性能影响较小,低温对吸油性能影响显著。加氢半焦对不同油品的吸附能力大小顺序为,高温煤焦油>加氢油品>豆油>原油>柴油,前3种油吸附形成以颗粒为核,外包油结构,后2种油吸附形成吸藏型结构。原油水体扩散时会形成明显的厚油层和薄油层,加氢半焦对厚油层吸附倍率较高,与发生油焦集聚现象有关。
The effects of soya-bean oil adsorption performance on different conditions and adsorption ability of different oil were investigated by using hydrogenation char as raw material.Furthermore,the nitrogen adsorption and mercury injection method were combined to discuss the oil-absorbing mechanism of the char,and they were applied study crude oil adsorption.The results show that the inner and outside surfaces of the char particles are hollow and macroporous,respectively.The char has obviously lipophilic and hydrophobic performance.It can reach equilibrium after adsorbing oil for an hour.The particle size of the char has little effect on adsorption performance,while low temperature has obvious influence on adsorption performance.The decreasing order of different oil adsorption capacities for the char are as follows:high temperature coal tar>hydrogenation oil>soya-bean oil>crude oil>diesel.The first three form the structure that particle is inside as core and oil layer is outside,and the latter two form the oil-filled structure.When crude oil diffuses in the water,it can obviously form thick and thin oil layer.The char has higher adsorption rate for the thick oil layer,because the char and thick oil layer aggregate during the adsorption.
作者
郑征
刘泽龙
周三
王蕾
ZHENG Zheng;LIU Ze-long;ZHOU San;WANG Lei(State Key Laboratory of Coal-based Low Carbon Energy,Langfang 065000,Hebei Province,China;ENN Science and TechnologyDevelopment Co.,Ltd.,Langfang 065000,Hebei Province,China)
出处
《化学工程》
CAS
CSCD
北大核心
2020年第2期57-62,共6页
Chemical Engineering(China)
基金
国家重点研发计划资助项目(2017YFB0602303)。
关键词
加氢半焦
吸油材料
吸油倍率
吸油机理
原油吸附
hydrogenation char
oil absorption material
oil absorption rate
oil absorption mechanism
crude oil adsorption
