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限制FCC过程中热裂化反应的意义及措施
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作者 徐惠 《催化裂化》 1998年第7期9-17,共9页
从分析催化裂化反应氢平衡入手确改进改进催化裂化过程的方向。通过改变影响热裂化反应的因素如反应温度、停留时间以及改善进料段、反应段、分离段和油气输向分馏塔段的操作等减少热裂化反应的发生,又设想改进提升管预提升段的操作,... 从分析催化裂化反应氢平衡入手确改进改进催化裂化过程的方向。通过改变影响热裂化反应的因素如反应温度、停留时间以及改善进料段、反应段、分离段和油气输向分馏塔段的操作等减少热裂化反应的发生,又设想改进提升管预提升段的操作,改进汽提段及汽提气的油气停留时间,控制提升管再生催化剂温度,这些措施实施后,干气产率降低了1%~1.5%并使装置操作灵活性得到进一步提高。 展开更多
关键词 fcc反应 热裂化 氢平衡 催化裂化 炼油
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Development of New Generation Catalysts for Selective Hydrodesulfurization of FCC Naphtha 被引量:5
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作者 Chu Yang Li Mingfeng +3 位作者 Li Huifeng Qu Jinhua Nie Hong Li Dadong (Research Institute of Petroleum Processing, SINOPEC Corp., Beijing 100083) 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2009年第1期19-23,共5页
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
关键词 fcc gasoline selective hydrogenation HYDRODESULFURIZATION catalyst anti-knock index
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Study on Disproportionation Reaction of FCC Gasoline on Acid Catalyst
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作者 Xu Youhao Wang Xieqing(Research Institute of Petroleum Processing, SINOPEC, Beijing 100083) 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2004年第2期35-40,共6页
Based on the experimental data relating to the reaction of FCC gasoline on acid catalyst the analysis of product distribution, and composition of gasoline and diesel fractions have been analyzed. The occurrence of dis... Based on the experimental data relating to the reaction of FCC gasoline on acid catalyst the analysis of product distribution, and composition of gasoline and diesel fractions have been analyzed. The occurrence of disproportionation reaction of FCC gasoline on acid catalyst and the network of disproportionation reaction have been identified. Study has also shown that different reaction temperatures can result in different pathways of disproportionation reactions on acid catalyst. 展开更多
关键词 fcc gasoline OLEFIN disproprotionation reaction acid catalyst reaction network
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Porcine FcεRI Mediates Porcine Reproductive and Respiratory Syndrome Virus Multiplication and Regulates the Inflammatory Reaction 被引量:4
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作者 Peidian Shi Lilin Zhang +6 位作者 Jiashun Wang Dong Lu Yi Li Jie Ren Menglu Shen Lei Zhang Jinhai Huang 《Virologica Sinica》 SCIE CAS CSCD 2018年第3期249-260,共12页
Porcine reproductive and respiratory syndrome virus(PRRSV) shows characteristic antibody-dependent enhancement(ADE) of infection and causes porcine systemic inflammation, which is similar to a type I allergic reaction... Porcine reproductive and respiratory syndrome virus(PRRSV) shows characteristic antibody-dependent enhancement(ADE) of infection and causes porcine systemic inflammation, which is similar to a type I allergic reaction; however, the role of porcine FceεRI in ADE is still unclear. In this study, the expression of different Fc receptors(Fc Rs) on macrophages was investigated in a PRRSV 3D4/21 cell infection model in the presence or absence of PRRSV antibody. The transcription level of Fcc II and FceεRI was significantly up-regulated under PRRSV-antibody complex infection. Internalization and proliferation of PRRSV were promoted by the ADE mechanism when FceεRI was expressed in permissive 3D4/21 cells and the non-permissive cell line HEK 293T. Transcriptome sequencing data showed that the expression levels of AKT,ERK and other signal molecules in the anti-inflammatory pathway were significantly increased, especially in the cells infected with the PRRSV-antibody immune complex. Inflammatory regulatory molecules such as PLA2G6, LOX, TRPM8 and TRPM4 were significantly up-regulated following PRRSV infection but significantly down-regulated in the cells infected with the PRRSV-antibody immune complex. Our results demonstrated that FceεRI could be involved in PRRSV ADE, the antigen presenting process and regulation of the inflammatory response during PRRSV infection, which provides new insights into PRRSV infection mediated by FceεRI and the PRRSV-antibody immune complex. 展开更多
关键词 Porcine reproductive and respiratory syndrome virus (PRRSV) FcεRI - Antibody-dependent enhancement(ADE) Inflammatory response
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