总结了多产丙烯和低硫燃料油组分的催化裂化与加氢脱硫技术(marine fuel and propylene, MFP)的工业试验装置主要技术内容和工艺特点。以140万t/a重油催化裂化装置为试验对象,对装置的空白标定数据、80%藏量标定数据进行了分析。结果表...总结了多产丙烯和低硫燃料油组分的催化裂化与加氢脱硫技术(marine fuel and propylene, MFP)的工业试验装置主要技术内容和工艺特点。以140万t/a重油催化裂化装置为试验对象,对装置的空白标定数据、80%藏量标定数据进行了分析。结果表明,与空白标定相比,MFP工艺实现了液化气烯烃度大幅增加,低碳烯烃产率和选择性得到改善,同时实现了抑制干气和焦炭的生成,使多环芳烃最大程度保留在燃料油组分中,产品性质稳定。展开更多
This paper describes a non-linear information dynamics model for integrated risk assessment of complex disaster system from an evolution perspective. According to the occurrence and evolution of natural disaster syste...This paper describes a non-linear information dynamics model for integrated risk assessment of complex disaster system from an evolution perspective. According to the occurrence and evolution of natural disaster system with complicated and nonlinear characteristics, a non-linear information dynamics mode is introduced based on the maximum flux principle during modeling process to study the integrated risk assessment of complex disaster system. Based on the non-equilibrium statistical mechanics method, a stochastic evolution equation of this system is established. The integrated risk assessment of complex disaster system can be achieved by giving reasonable weights of each evaluation index to stabilize the system. The new model reveals the formation pattern of risk grade and the dynamics law of evolution. Meanwhile, a method is developed to solve the dynamics evolution equations of complex system through the self-organization feature map algorithm. The proposed method has been used in complex disaster integrated risk assessment for 31 provinces, cities and autonomous regions in China mainland. The results have indicated that the model is objective and effective.展开更多
The conventional BF/MFP (beamforming/matched field processing) or BF/MFP based on subspace are traditional array signal processing methods for source's detection and location, they are all belonging to singe-resol...The conventional BF/MFP (beamforming/matched field processing) or BF/MFP based on subspace are traditional array signal processing methods for source's detection and location, they are all belonging to singe-resolution processing. In fact, the array signal has multiresolution structure, which is worthy of exploiture and utilization to enhance the ability of detection and location, especially to improve the robustness for BF/MFP. The time-space multiresolution modeling of multipath transmitted wave and the corresponding multiresolution focused processing are investigated, and it is shown from the analysis of actual sea-trial data that the performance of MFP can be improved.展开更多
文摘总结了多产丙烯和低硫燃料油组分的催化裂化与加氢脱硫技术(marine fuel and propylene, MFP)的工业试验装置主要技术内容和工艺特点。以140万t/a重油催化裂化装置为试验对象,对装置的空白标定数据、80%藏量标定数据进行了分析。结果表明,与空白标定相比,MFP工艺实现了液化气烯烃度大幅增加,低碳烯烃产率和选择性得到改善,同时实现了抑制干气和焦炭的生成,使多环芳烃最大程度保留在燃料油组分中,产品性质稳定。
基金supported by the National Twelfth Five-year Technology Support Projects of China (Grant Nos. 2009BAJ28B04, 2011BAK07B01,2011BAJ08B03, and 2011BAJ08B05)the National Natural Science Foundation of China (Grant No. 51208017)+1 种基金Beijing Postdoctoral Research Foundation (Grant No. 2012ZZ-17)China Postdoctoral Science Foundation Funded Project (Grant No. 2011M500199)
文摘This paper describes a non-linear information dynamics model for integrated risk assessment of complex disaster system from an evolution perspective. According to the occurrence and evolution of natural disaster system with complicated and nonlinear characteristics, a non-linear information dynamics mode is introduced based on the maximum flux principle during modeling process to study the integrated risk assessment of complex disaster system. Based on the non-equilibrium statistical mechanics method, a stochastic evolution equation of this system is established. The integrated risk assessment of complex disaster system can be achieved by giving reasonable weights of each evaluation index to stabilize the system. The new model reveals the formation pattern of risk grade and the dynamics law of evolution. Meanwhile, a method is developed to solve the dynamics evolution equations of complex system through the self-organization feature map algorithm. The proposed method has been used in complex disaster integrated risk assessment for 31 provinces, cities and autonomous regions in China mainland. The results have indicated that the model is objective and effective.
文摘The conventional BF/MFP (beamforming/matched field processing) or BF/MFP based on subspace are traditional array signal processing methods for source's detection and location, they are all belonging to singe-resolution processing. In fact, the array signal has multiresolution structure, which is worthy of exploiture and utilization to enhance the ability of detection and location, especially to improve the robustness for BF/MFP. The time-space multiresolution modeling of multipath transmitted wave and the corresponding multiresolution focused processing are investigated, and it is shown from the analysis of actual sea-trial data that the performance of MFP can be improved.
