摘要
以Fe(NO3)3和Na2S分别作为催化剂前体和原位硫化剂,在20℃下分别用水、甲醇(M)、N-N二甲基甲酰胺(DMF)和二甲亚砜(DMSO)对神华烟煤溶胀12 h,同步溶胀-担载催化剂后的烟煤脱除溶剂后与轮古常渣(LGAR)和杜84超稠油(Du84)在2∶1油煤质量比,8 MPa冷氢压,420℃,1 h的条件下进行加氢共处理.结果表明,神华烟煤经过溶胀处理后与两种重油共处理的液化率都明显提高,煤的转化率明显增大;三种有机溶胀剂相比,DMF同步溶胀促进液化效果最好,其次为DMSO,甲醇最差.两种配油相比,Du84比LGAR更适合煤-重油共处理.XRD分析表明,同步溶胀-担载法制备的溶胀煤载铁催化剂以非晶态和高分散的状态存在于溶胀煤表面,在共处理中催化剂最终转化为Fe1-xS.在煤-重油共处理中,经DMF同步溶胀-担载的催化剂失活,结晶相对不明显.
Fe（NO3）3 as catalytic precursor and Na2S as in-situ presulfurizer were impregnated on the Shenhua bituminous coals which were synchronously swollen with H2O,methanol,N-N dimethylformamide（DMF） or dimethyl sulfoxide（DMSO） at 20 ℃ for 12 h.Then the swollen coals were prepared by vacuum drying.The co-processing of swollen Shenhua coal and two heavy oils（LGAR and Du84） was carried on under the condition of the mass ratio of 2∶1 oil to coal,8 MPa cold hydrogen pressure,420 ℃and 1 h.The coprocessing of the swollen bituminous coal and LGAR or Du84 was significantly improved on the coal liquefaction.Among the three swelling solvents,the improvement of DMF was the highest,that of DMSO was the better and methanol were the lowest.Du84 was favor in the coprocessing than LGAR.By XRD analysis,the iron catalysts on the swollen coal with Fe（NO3）3 synchronously impregnated with the solvents were amorphous and highly dispersed on coal surface and could transform into Fe1-xS in the coprocessing.During the coprocessing,the deactivation of the catalyst synchronously impregnated on swollen coal with DMF was not clear.
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第3期1-6,共6页
Coal Conversion
基金
中石油中青年创新基金资助项目(04E7039)
重质油国家重点实验室专项项目(E080420B-10)
关键词
烟煤
溶胀处理
煤-重油共处理
催化剂
铁盐
bituminous coal
swelling treatment
coprocessing of coal and oils
catalysts
ironic salt
