沥青质在近临界水中的催化裂解  

Study of catalytic cracking of asphaltene in near-critical water

作　　者：刘永建[1] 王国强[2] 丁伟[2] 于涛[2] 曲广淼[2] 

机构地区：[1]大庆石油学院石油工程学院,黑龙江大庆163318 [2]大庆石油学院化学化工学院,黑龙江大庆163318

出　　处：《大庆石油学院学报》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)

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%.

关 键 词：近临界水 沥青质 催化裂解 环烷酸镍 正庚烷 

分 类 号：TQ032[化学工程]