The influence of active metal components of catalyst, additives and catalyst preparation method on the reactivity of catalyst for selective hydrodesulfurization (HDS) of FCC naphtha was investigated, and the RSDS-21 c...The influence of active metal components of catalyst, additives and catalyst preparation method on the reactivity of catalyst for selective hydrodesulfurization (HDS) of FCC naphtha was investigated, and the RSDS-21 catalyst with high HDS performance and the RSDS-22 catalyst with high selectivity were developed by RIPP. The composite loading of a new series of catalysts for selective HDS of FCC gasoline has demonstrated excellent desulfurization activity and selectivity and can under conventional hydrotreating conditions manufacture clean gasoline product meeting the national IV emission standard and the Euro V emission standard with less loss in antiknock index. The finalized new series of FCC catalysts upon being adopted for selective HDS of FCC naphtha have good adaptability to different feedstocks along with good stability.展开更多
为研究聚脲涂层喷涂位置及涂层厚度对钢板抗爆性能的影响规律。对4种不同类型喷涂结构及纯钢板结构进行2 kg TNT(trinitrotoluene)炸药爆炸试验,并采用LS-DYNA仿真软件对试验工况进行数值模拟,比对试验结果验证数值计算的可靠性,同时在...为研究聚脲涂层喷涂位置及涂层厚度对钢板抗爆性能的影响规律。对4种不同类型喷涂结构及纯钢板结构进行2 kg TNT(trinitrotoluene)炸药爆炸试验,并采用LS-DYNA仿真软件对试验工况进行数值模拟,比对试验结果验证数值计算的可靠性,同时在理论层面对迎、背面喷涂结构中的应力波衰减特性进行计算分析;在此基础上,进一步研究涂层厚度对背面喷涂结构抗爆性能的影响规律。结果表明:相比于无喷涂、迎面、双面喷涂结构,背面喷涂展现出更显著的抗爆潜力,其形成的大阻抗比结构是有效衰减应力波峰值的重要原因;等钢板厚度条件下,增加涂层厚度能有效提升结构抗力,但提升程度随着聚脲/钢板厚度比的增加而不断降低;等面密度条件下,增加涂层厚度结构呈现加剧破坏趋势。展开更多
文摘The influence of active metal components of catalyst, additives and catalyst preparation method on the reactivity of catalyst for selective hydrodesulfurization (HDS) of FCC naphtha was investigated, and the RSDS-21 catalyst with high HDS performance and the RSDS-22 catalyst with high selectivity were developed by RIPP. The composite loading of a new series of catalysts for selective HDS of FCC gasoline has demonstrated excellent desulfurization activity and selectivity and can under conventional hydrotreating conditions manufacture clean gasoline product meeting the national IV emission standard and the Euro V emission standard with less loss in antiknock index. The finalized new series of FCC catalysts upon being adopted for selective HDS of FCC naphtha have good adaptability to different feedstocks along with good stability.
文摘为研究聚脲涂层喷涂位置及涂层厚度对钢板抗爆性能的影响规律。对4种不同类型喷涂结构及纯钢板结构进行2 kg TNT(trinitrotoluene)炸药爆炸试验,并采用LS-DYNA仿真软件对试验工况进行数值模拟,比对试验结果验证数值计算的可靠性,同时在理论层面对迎、背面喷涂结构中的应力波衰减特性进行计算分析;在此基础上,进一步研究涂层厚度对背面喷涂结构抗爆性能的影响规律。结果表明:相比于无喷涂、迎面、双面喷涂结构,背面喷涂展现出更显著的抗爆潜力,其形成的大阻抗比结构是有效衰减应力波峰值的重要原因;等钢板厚度条件下,增加涂层厚度能有效提升结构抗力,但提升程度随着聚脲/钢板厚度比的增加而不断降低;等面密度条件下,增加涂层厚度结构呈现加剧破坏趋势。
