CAJ | 학술논문

高温水热裂解实验一般都是在稠油与高温高压热水间进行,而过热蒸汽与稠油间的水热裂解反应目前尚无研究.为了展开此项研究,在调研的基础上设计了一种可变体积的高温高压反应釜替换定体积反应釜,实现了稠油过热蒸汽下的水热裂解实验.通过该设备实验研究了不同温度、不同含水量条件下过热蒸汽对稠油水热裂解的影响规律.实验结果表明,原油与过热蒸汽之间发生了明显的水热裂解反应.进一步分析可知,水热裂解反应后,原油黏度降低,饱和烃与芳香烃增加,胶质、沥青质含量降低,原油中的碳原子含量降低,氢原子含量明显增加,硫原子含量减小.随着含水量的增加,反应后原油的黏度先减小后增加,含水量为30%时,原油黏度最小.
고온수열렬해실험일반도시재주유여고온고압열수간진행,이과열증기여주유간적수열렬해반응목전상무연구.위료전개차항연구,재조연적기출상설계료일충가변체적적고온고압반응부체환정체적반응부,실현료주유과열증기하적수열렬해실험.통과해설비실험연구료불동온도、불동함수량조건하과열증기대주유수열렬해적영향규률.실험결과표명,원유여과열증기지간발생료명현적수열렬해반응.진일보분석가지,수열렬해반응후,원유점도강저,포화경여방향경증가,효질、력청질함량강저,원유중적탄원자함량강저,경원자함량명현증가,류원자함량감소.수착함수량적증가,반응후원유적점도선감소후증가,함수량위30%시,원유점도최소.
High temperature aquathermolysis is generally carried out between heavy oil and hot water with high pressure,but the aquathermolysis reaction between over-heated steam and heavy oil is hardly studied.In order to conduct this research,based on investigation,a high temperature and high pressure autoclave whose volume is changeable is designed to substitute for the autoclave whose volume is fixed,so the aquathermolysis of heavy oil in over-heated steam is achieved.By means of the equipment,the influence of over-heated steam on heavy oil aquathermolysis under the condition of different temperature and different water content is studied.Result shows there is an apparent aquathermolysis reaction between crude oil and over-heated steam.Further analysis demonstrates after aquathermolysis reaction,oil viscosity reduces the amount of saturated and aromatic hydrocarbons increases,resin and asphaltenes decrease,carbon atom content in crude oil decreases,hydrogen atom content increases greatly and sulfur atom content decreases.As water content increases the crude oil viscosity decreases firstly,then increases after reaction.When water content is 30%,the viscosity is the lowest.