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李雅丽 《化学反应工程与工艺》2008,24(4)
法国Axens公司开发的多产丙烯渣油流化催化裂化(RFCC)“PetroRiser”新技术工业应用。这项新技术是FCC联盟中的一部分(FCC联盟由Axens、TheShawGroup、Total S A、IFP四家公司联合组建),采用该新技术的工业化许可项目定于2008年7月公布。 相似文献
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针对催化裂化干气制乙苯技术的发展和干气中丙烯对催化剂及成套技术的影响进行了对干气中丙烯选择吸收以降低其中丙烯含量的研究.通过苯、乙苯、柴油、反烃化料和乙苯/反烃化料等吸收剂对干气中丙烯吸收效果对比,表明,采用m(乙苯)/m(反烃化料)混合料对干气中丙烯吸收效果最理想.采用低温和高吸收剂/干气体积比有利于乙苯/反烃化料的混合物吸收剂对干气中丙烯的吸收,且吸收剂吸收后的气体在一定的条件下可解吸,解吸后的吸收剂可循环使用,利用吸收后的催化裂化干气制乙苯可明显降低苯耗和提高乙基化产物选择性. 相似文献
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孙庆 《中国石油和化工标准与质量》2012,33(12):39-40
针对催化裂化装置近期出现的干气收率较高的情况,对提升管温度、吸收效果、稳定汽油蒸气压、吸收塔油气比、吸收压力等工艺条件对干气收率的影响进行了研究分析,并提出了调整措施。 相似文献
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催化裂化汽油的二次反应 总被引:4,自引:0,他引:4
从降烯烃、降硫和增产丙烯的现实需要出发,分析了FCC汽油二次反应中的理想和非理想反应.用小型提升管催化裂化实验装置考察了FCC粗汽油在REUSY、ZRP和MO-REY沸石催化剂上二次反应的产品分布和改质汽油组成;探讨了操作强度对二次反应转化率和选择性的影响.结果表明:在Y型或ZRP沸石催化剂作用下,FCC汽油二次反应不仅产生更轻的干气和富含丙烯的液化气,也产生更重的柴油和焦炭.二次反应得到的改质汽油与原料汽油相比,其烯烃含量和硫含量降低,芳烃含量和辛烷值明显提高.二次反应的转化深度和选择性取决于原料汽油的烯烃含量、催化剂沸石类型和操作强度. 相似文献
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流化催化裂化(FCC)技术是我国一项先进的科研成果,广泛应用于各领域,尤其是高温、低压力方面,以及催化剂用于残渣进料与裂解重质油料。本文主要介绍了De—SOX技术的发展,对国内外生产丙烯的技术进行了简要概述,对丙烯技术的研发思路进行了论述,还依据固体吸附材料理论综述了流化催化裂化(FCC)汽油脱硫吸附剂。从加氢脱硫和非加氢脱硫两方面综述如何降低硫含量,得到环保产品。 相似文献
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本文针对炼油厂目前加氢裂化、大芳烃、化工三个车间产生的各类可利用的约90万吨/年烷烃进行综合研究,拟采用凯洛格布朗路特北京有限公司的催化裂解制烯烃ACO工艺,该工艺所采用的设备和炼油厂FCC装置类似,主要是通过在提升管内的反应,把约90万吨/年各类轻质烷烃原料催化裂化为高附加值的产品:乙烯、丙烯和粗汽油(含BTX50%)、燃料气+烧焦,用于解决大量轻质烷烃类产品当做液化气、液化气重I、II来销售而亏损的现状,大幅提升炼油厂的经济效益,同时为本厂大芳烃装置提供混苯原料。 相似文献
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选择转化提纯催化裂化干气中乙烯的研究 总被引:1,自引:0,他引:1
采用改性 ZS M-5沸石催化剂,可使催化裂化干气中丙烯、丁烯转化为烃类,其中95%的乙烯被保留.此技术用于干气制乙苯工艺,将使苯耗减少20%。 相似文献
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In the fluid catalytic cracking reactor heavy gas oil is cracked into more valuable lighter hydrocarbon products. The reactor input is a mixture of hydrocarbons which makes the reaction kinetics very complicated due to the involved reactions. In this paper, a four-lump model is proposed to describe the process. This model is different from others mainly in that the deposition rate of coke on catalyst can be predicted from gas oil conversion and isolated from the C1–C4 gas yield. This is important since coke supplies heat required for endothermic reactions occurring in the reactor. By this model we can also conclude that the C1–C4 gas yield increases with increasing reactor temperature, while production of gasoline and coke decreases. 相似文献
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Behavior of catalytic cracking reactions of particle cluster in fluid catalytic cracking (FCC) riser reactors was numerically analyzed using a four-lump mathematical model. Effects of the cluster porosity, inlet gas velocity and temperature, and coke deposition on cracking reactions of the cluster were investigated. Distributions of temperature, gases, and gasoline from both catalyst particle cluster and an isolated catalyst particle are presented. The reaction rates from vacuum gas oil (VGO) to gasoline, gas and coke of individual particle in the cluster are higher than those of the isolated particle, but it reverses for the reaction rates from gasoline to gas and coke. Less gasoline is produced by particle clustering. Simulated results show that the produced mass fluxes of gas and gasoline increase with the operating temperature and molar concentration of VGO, and decrease due to the formation of coke. 相似文献
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Pingxiang YAN Xianghai MENG Jinsen GAO Chunmin XU Zhiyu SUI 《Frontiers of Chemical Engineering in China》2008,2(1):74-79
The effects of reaction temperature, mass ratio of catalyst to oil, space velocity, and mass ratio of water to oil on the
product distribution, the yields of light olefins (light olefins including ethylene, propylene and butylene) and the composition
of the fluid catalytic cracking (FCC) gasoline upgraded over the self-made catalyst GL in a confined fluidized bed reactor
were investigated. The experimental results showed that FCC gasoline was obviously reformulated under appropriate reaction
conditions. The olefins (olefins with C atom number above 4) content of FCC gasoline was markedly reduced, and the aromatics
content and octane number were increased. The upgraded gasoline met the new standard of gasoline, and meanwhile, higher yields
of light olefins were obtained. Furthermore, higher reaction temperature, higher mass ratio of catalyst to oil, higher mass
ratio of water to oil, and lower space velocity were found to be beneficial to FCC gasoline reformulation and light olefins
production.
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Translated from Chemical Reaction Engineering and Technology, 2006, 22(6): 532–538 [译自: 化学反应工程与工艺] 相似文献
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以负载金属铈的分子筛为催化剂,在H2O2-HCOOH体系中,对催化裂化(FCC)汽油中特征硫化物噻吩(C4H4S)的正庚烷溶液进行了氧化脱硫研究。考察了氧化剂用量、溶剂、氧化时间、氧化温度、相转移剂等因素对噻吩脱除效果的影响,并对对噻吩的氧化反应历程进行了初步的探讨。实验结果表明:以负载金属铈的分子筛为催化剂,在反应温度50℃,反应60min, H2O2:S=10:1(mol/mol),H2O2:HCOOH=1:1(V/V)的条件下,正庚烷溶液C4H4S的脱除率达到了78.2%,加入乳化剂OP可使C4H4S的脱硫率达到94.5%,但四丁基溴化胺(TBAB)的加入使氧化后的样品中出现了噻吩的溴代产物。 相似文献