In this article, residual oil hydroconversion was studied in slurry phase in the presence of fine solid Ni Mo/γ-Al2O3 catalyst and the effects of operating conditions were carefully studied. The results showed that r...In this article, residual oil hydroconversion was studied in slurry phase in the presence of fine solid Ni Mo/γ-Al2O3 catalyst and the effects of operating conditions were carefully studied. The results showed that residue conversion was only affected by the reaction temperature and reaction time. The coke yield increased with a higher reaction temperature, a bigger catalyst particle size, a longer reaction time, a lower initial hydrogen pressure and a lower catalyst concentration. Heteroatoms removal rate increased with a higher reaction temperature, a longer reaction time, a higher initial hydrogen pressure, a higher catalyst concentration, and a smaller catalyst particle size. The role of catalyst in the slurry bed technology was discussed and its function could be stated as follows: the metal was applied to activate the hydrogen atoms for removing heteroatoms and saturating aromatics, while the support of the catalyst was used to prevent the mesophase coalescence for reducing coke formation.展开更多
Aim To determine efficiency of multi-range hydro-mechanical stepless transmis- sion(HMT).Methods Ageneral model of HMT was of HMT was structured.On the basis of power flow analysis, the efficiency was obtained,Results...Aim To determine efficiency of multi-range hydro-mechanical stepless transmis- sion(HMT).Methods Ageneral model of HMT was of HMT was structured.On the basis of power flow analysis, the efficiency was obtained,Results efficiency of multi-range HMT changes continuously with output speed in speed range and is higher than the highest point of the hydraulic efficiency,The volumetric efficiency can potentially result in the speed fluctuation, which can be reduced or eliminated through controlling the ratio of the displacements ofhydraulic unity properly or changing the point of range exchanging .And the mechanical- constant output torque or different output torque under the condition of constant pressure when the transmission works in different parts of a range,Conclusion The multi-range HMT is an ideal stepless transmission with high efficiency.展开更多
加氢裂化-加氢精制平行进料工艺(FHC-FHF)是由中国石油化工股份有限公司抚顺石油化工研究院自主开发的新型加氢工艺。介绍了该工艺首次工业应用于中海石油舟山石化有限公司1.7 M t/a馏分油加氢装置的情况,包括工艺流程、催化剂的性质、...加氢裂化-加氢精制平行进料工艺(FHC-FHF)是由中国石油化工股份有限公司抚顺石油化工研究院自主开发的新型加氢工艺。介绍了该工艺首次工业应用于中海石油舟山石化有限公司1.7 M t/a馏分油加氢装置的情况,包括工艺流程、催化剂的性质、装填、硫化、钝化,详细介绍了标定期间的主要操作条件、原料及产品性质、物料平衡,分析了该工艺的特点及缺陷。实践证明,该工艺的首次工业应用是成功的。针对加工原料氮含量较高的情况,提出了改进裂化催化剂的抗氮性能和精制催化剂的低温脱氮性能的建议。展开更多
文摘In this article, residual oil hydroconversion was studied in slurry phase in the presence of fine solid Ni Mo/γ-Al2O3 catalyst and the effects of operating conditions were carefully studied. The results showed that residue conversion was only affected by the reaction temperature and reaction time. The coke yield increased with a higher reaction temperature, a bigger catalyst particle size, a longer reaction time, a lower initial hydrogen pressure and a lower catalyst concentration. Heteroatoms removal rate increased with a higher reaction temperature, a longer reaction time, a higher initial hydrogen pressure, a higher catalyst concentration, and a smaller catalyst particle size. The role of catalyst in the slurry bed technology was discussed and its function could be stated as follows: the metal was applied to activate the hydrogen atoms for removing heteroatoms and saturating aromatics, while the support of the catalyst was used to prevent the mesophase coalescence for reducing coke formation.
文摘Aim To determine efficiency of multi-range hydro-mechanical stepless transmis- sion(HMT).Methods Ageneral model of HMT was of HMT was structured.On the basis of power flow analysis, the efficiency was obtained,Results efficiency of multi-range HMT changes continuously with output speed in speed range and is higher than the highest point of the hydraulic efficiency,The volumetric efficiency can potentially result in the speed fluctuation, which can be reduced or eliminated through controlling the ratio of the displacements ofhydraulic unity properly or changing the point of range exchanging .And the mechanical- constant output torque or different output torque under the condition of constant pressure when the transmission works in different parts of a range,Conclusion The multi-range HMT is an ideal stepless transmission with high efficiency.
文摘加氢裂化-加氢精制平行进料工艺(FHC-FHF)是由中国石油化工股份有限公司抚顺石油化工研究院自主开发的新型加氢工艺。介绍了该工艺首次工业应用于中海石油舟山石化有限公司1.7 M t/a馏分油加氢装置的情况,包括工艺流程、催化剂的性质、装填、硫化、钝化,详细介绍了标定期间的主要操作条件、原料及产品性质、物料平衡,分析了该工艺的特点及缺陷。实践证明,该工艺的首次工业应用是成功的。针对加工原料氮含量较高的情况,提出了改进裂化催化剂的抗氮性能和精制催化剂的低温脱氮性能的建议。
