摘要
采用溶剂分离的方法,用正庚烷提取胜利油田稠油中的沥青质.利用沥青质的1HNMR和13CNMR谱,结合红外光谱和元素分析,得出沥青质的结构组成以芳环结构为主.以环烷酸镍为催化剂,在近临界水中对沥青质催化裂解,利用正交实验分析得出适宜反应条件:反应温度为300℃、催化剂质量分数为0.6%、反应时间为24h.测定裂解后沥青质的元素质量分数:碳元素质量分数降低0.06%～0.80%,氢元素质量分数降低0.74%～3.41%,氧元素质量分数降低3.12%～27.1%,氮元素质量分数降低0.40%～13.47%,硫元素质量分数降低9.85%～31.26%.
The method of solvent division is adopted to separate asphaltene from Shengli heavy oil by n-heptane.1H and 13C NMR spectrum of asphaltene were determined with a Bruker Avance 400 NMR spectrometer.By combining the infrared spectrum with the elemental analysis results,the aromatic-ring structure is main structural composition in the asphaltene.Asphaltene was catalyzed and cracked with naphthenate nickel as catalytic cracking catalyst in near-critical water.The suitable reactional condition was obtained by orthogonal experiment method,reaction temperature 300 ℃,the amount of catalyst used 0.6%,reaction time 24 h.By testing element content of cracked asphaltene,carbon element content had reduced 0.06%~0.80%;hydrogen element content had reduced by 0.74%~3.41%;oxygen element content had reduced by 3.12%~27.1%;nitrogen element content had reduced by 0.40%~13.47%;sulfur element content had reduced by 9.85%~31.26%.
出处
《大庆石油学院学报》
CAS
北大核心
2008年第2期68-70,74,共4页
Journal of Daqing Petroleum Institute
基金
国家重大基础研究前期研究专项(2005CCA06200)
关键词
近临界水
沥青质
催化裂解
环烷酸镍
正庚烷
near-critical water
asphaltene
catalytic cracking
naphthenate nickel
n-heptane
