摘要
70%减压渣油与30%低阶烟煤均匀混合成浆,再加入总量1%的催化剂,利用陕西延长石油集团开发的150 kg/d悬浮床加氢裂化技术进行试验研究,反应压力20 MPa,空速0.5 h^(-1),氢油比2000 L/h,催化剂1%考察反应温度在456℃、468℃、470℃在同1种催化剂下煤油共炼反应性能及产物分布的影响和装置的稳定性,利用煤油共炼的协同效应,使富含芳烃的煤与减压渣油共炼时提高氢的利用率,降低氢耗和能耗,提高产品收率。结果表明,试验中煤的转化率高达91.09%,气体C1~C4收率11.19%,液体收率79.63%。在转化率方面,随反应温度从465℃升至468℃再增至470℃的过程中,随反应温度的升高,煤转化率总体呈增长趋势,468℃至470℃气体烃类收率增加而液体收率降低,要获得高液收,反应温度468℃较合适。
70%vacuum residual oil and 30%low-rank bituminous coal were mixed uniformly form slurry,then add 1%catalyst to the total slurry amount.The 150 kg/d suspended bed hydrocracking technology developed by Shaanxi Yanchang Petroleum Group was used for experimental research.The reaction pressure was 20 MPa,the space velocity was 0.5 h^(-1),the hydrogen-to-oil ratio was 2000 L/h,and the reaction temperature of 1%catalyst was 456℃and 468℃.The effect of kerosene co-smelting reaction performance and product distribution under the same catalyst at 470℃and the stability of the device,the synergistic effect of kerosene co-smelting is used to react aromatic-rich coal with hydrogen pyrolysis from vacuum residue to improve mass and heat transfer efficiency.The results show that:The conversion rate of coal is as high as 91.09%,the yield of gas C1~C4 is 11.19%,and the yield of liquid is 79.63%.In terms of conversion rate,as the reaction temperature increased from 465℃to 468℃and then to 470℃,the coal conversion rate showed an overall trend of increasing with the increase of reaction temperature.From 468℃to 470℃,the gas hydrocarbon yield increased while the liquid yield decreased.In order to obtain high liquid yield,the reaction temperature of 468℃was more appropriate.
作者
郭彦新
高伟
毛吉会
李琦
问王伟
Guo Yanxin;Gao Wei;Mao Jihui;Li Qi;Wen Wangwei(Shaanxi Yanchang Petroleum(Group)Company with limited liability Hydrocarbon High-efficiency Utilization Technology Research Center,Xi'an 710075,China)
出处
《炼油与化工》
CAS
2024年第3期21-24,共4页
Refining And Chemical Industry
关键词
悬浮床
加氢裂化
煤油共炼
减压渣油
氢气
Suspension bed
Hydrocracking
Kerosene co-refining
Vacuum residue
hydrogen
