磺化型有机金属催化剂在稠油降黏改质中的应用

APPLICATION OF SULFONATED ORGANOMETALLIC CATALYST IN VISCOSITY REDUCING OF HEAVY OIL

制备了3种磺化型有机酸金属催化剂,用高温高压反应釜进行了稠油的催化降黏实验,筛选出了最佳催化剂和最佳降黏条件。结果表明,磺化型有机酸铁催化剂的降黏效果最佳,当稠油量为250g时,加入1g该催化剂,加入油层水量为m(油层水)∶m(稠油)=30%,在220℃反应24h,辽河稠油黏度从81 400mPa·s降至3 000mPa·s,降黏率达96.31%。检测了催化降黏前后稠油四组分及不凝气体产物:饱和分含量提高7.5%、芳香分含量提高3.2%,胶质含量降低8.2%,沥青质含量降低2.5%;检测出不凝气相产物含有甲烷、烯烃和二氧化碳等气体,符合稠油水热裂解降黏规律,证明由于催化改质降低了稠油的黏度。

Three organic sulfonic acid transition metal catalysts were prepared.The viscosity reduction effect of heavy oil was investigated with high temperature and high pressure reaction kettle.The re- sults showed that the sulfonated organic acid iron catalyst was the best viscosity reducing effect. When the heavy oil content was 250g,1g of the catalyst was added,and the amount of reservoir wa- ter was m(reservoir water):m(heavy oil)=30%,the reaction temperature was 220℃ for 24h,the liaohe heavy oil viscosity was reduced from 81400 mPa·S to 3000mPa·S,viscosity reduction rate was 96.31%.Four components of heavy oil and non-condensable gas products were detected before and after catalytic viscosity reduction:the saturated content increased by 7.5%,the aromatic content increased by 3.2%,the colloidal content decreased by 8.2%,and the asphaltene content decreased by 2.5%;The products of the non-condensable gas phase contained methane,olefins and carbon dioxide, which conformed to the law of viscosity reduction in heavy oil pyrolysis ,and proved that the viscosity of heavy oil was reduced by catalytic modification.