共查询到17条相似文献,搜索用时 203 毫秒
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以天津1Mt大乙烯MTBE装置的剩余碳四(C4)和氢气为原料,通过催化剂固定床反应器,在起始温度室温,操作压力2.0~2.4MPa,氢油比H2/C4=为1.05,体积空速2.4~18h-1,进料烯烃质量分数18.8%的反应条件下,将剩余C4中的烯烃加氢完全转化为饱和烷烃,生成的C4烷烃是优质乙烯裂解料,可以部分缓解天津1Mt大乙烯装置裂解料短缺的问题,研制的低温非贵金属Mo-Ni催化剂有很好的加氢性能,并能再生使用。 相似文献
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针对乙烯原料日益短缺和碳四过剩的问题,利用小型蒸汽裂解模拟实验装置对轻烃—碳四混合原料进行裂解性能研究,考察了在SC-1型裂解炉中碳四掺入量及工艺参数对目的产物(乙烯+丙烯+丁二烯)三烯收率的影响。实验结果表明,混合原料中碳四最佳掺入量为10~20%,适宜的裂解温度为840~850℃,稀释比(水/油质量比)为0.5时,乙烯质量分数为31.87%,丙烯质量分数为16.57%,三烯质量分数为53.60%,可见碳四与轻烃共裂解,既扩大了乙烯原料来源,又提高了碳四产品附加值。 相似文献
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研究纳米沸石分子筛SHY-DL催化剂上的芳构化反应性能,探索临氢条件、二烯烃含量、反应温度及空速等条件对芳构化反应的影响。在固定床反应器上以炼油厂碳四烃为原料,在反应温度360~450℃、压力2.0MPa、碳四烃液相进料体积空速0.9~1.2h-1的操作条件下,碳四烯烃转化率达99%,干气产率小于2.0%,C5+液相收率为43%~50%,液相产物的RON和MON值为98.8和87.9。在实验室蒸汽热裂解评价装置上,研究碳四烃芳构化副产LPG裂解制乙烯的性能。结果表明,在裂解温度910℃、水油质量比0.45的条件下,LPG裂解的乙烯收率为30.98%,丙烯收率为15.95%,属较好的裂解制乙烯原料。 相似文献
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FC-34催化剂是为满足国内炼化市场对清洁燃油和优质化工原料的需求而开发的新一代单段多产清洁中间馏分油和高质量尾油(可用作蒸汽裂解制乙烯原料)的加氢裂化催化剂。该催化剂以改性Y型分子筛和纳米无定形硅铝复合材料为主要酸性组分,采用DURM均匀混合技术制备,活性组分可以在催化剂中均匀分散。性能评价结果表明,FC-34加氢裂化催化剂具有裂化活性适宜、加氢性能优良、中间馏分油选择性高,开环能力强等特点,其活性和中间馏分油选择性两者的综合性能达到了FC-14催化剂的水平,尾油BMCI值得到极大改善,可以作为理想的蒸汽裂解制乙烯原料。 相似文献
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Pt/HZSM-5 bifunctional catalyst of fluid catalytic cracking (FCC) gasoline hydroisomerization was prepared. The influence of calcinations and reduction conditions, the metal-incorporation technique, and metal loading on the hydroisomerization of FCC gasoline over the Pt/HZSM-5 bifunctional catalyst was studied. The process opinion catalyst of FCC gasoline hydroisomerization was obtained under the condition of temperature 290-300°C; pressure 1.5-2.5 Mpa; liquid hour space velocity (LHSV) 2.0-3.0 hr-1; V(H2)/V(Oil) = 2.0-3.0. The results showed that calcination conditions have a significant influence on ion-exchanged catalysts, as they control the final metal distribution. The reduction conditions and the method used for platinum incorporation were found to be important factors that affected both the activity and selectivity of the catalysts. Pt/HZSM-5 bifunctional catalyst possessed good activity for hydrogenation and isomerization. The olefin hydrocarbons of FCC gasoline were hydrogenated and the stability of FCC gasoline was improved under condition of unchanged octane number. 相似文献
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以催化裂化轻汽油为原料,采用大连理工大学开发的SHY-DL催化剂在200 mL多功能固定床试验装置上进行了芳构化反应工艺条件的优化及长周期稳定运行试验。结果表明:随着反应温度升高,烯烃转化率,干气和液化石油气(LPG)收率,C_5~205℃馏分中芳烃质量分数均增加,C_(≥5)液体收率下降;随着反应压力增大,C_5~205℃馏分中芳烃质量分数和C_(≥5)液体收率减小;随着质量空速提高,烯烃转化率和C_5~205℃馏分中芳烃质量分数降低,而C_(≥5)液体收率则增加;在反应温度为380℃,反应压力为1.6 MPa,质量空速为3.0 h~(-1)的最佳工艺条件下,运行1 500 h后,C_(≥5)液体收率大于50%,C_5~205℃馏分中芳烃质量分数高于40%。 相似文献
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在小型固定床试验装置考察了ZSM-5分子筛催化剂对醚后碳四芳构化反应的催化性能,并进行了催化剂长周期活性稳定性评价。结果表明:在反应温度为380 ℃、反应压力为2.0 MPa、氢油比体积比为300、质量空速为2.0 h-1的条件下,催化剂的长周期运行活性稳定,烯烃转化率大于99%,干气产率小于2%,液化气产率为57%~64%,C5+液体收率为35%~41%,芳烃产率为10%~12%。经过 984 h长周期运行后,芳构化催化剂的积炭量为11.56%。气相产物是优质的裂解制乙烯原料。 相似文献
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《Petroleum Science and Technology》2013,31(9):1027-1042
Abstract Pt/HZSM-5 bifunctional catalyst of fluid catalytic cracking (FCC) gasoline hydroisomerization was prepared. The influence of calcinations and reduction conditions, the metal-incorporation technique, and metal loading on the hydroisomerization of FCC gasoline over the Pt/HZSM-5 bifunctional catalyst was studied. The process opinion catalyst of FCC gasoline hydroisomerization was obtained under the condition of temperature 290–300°C; pressure 1.5–2.5 Mpa; liquid hour space velocity (LHSV) 2.0–3.0 hr?1; V(H2)/V(Oil) = 2.0–3.0. The results showed that calcination conditions have a significant influence on ion-exchanged catalysts, as they control the final metal distribution. The reduction conditions and the method used for platinum incorporation were found to be important factors that affected both the activity and selectivity of the catalysts. Pt/HZSM-5 bifunctional catalyst possessed good activity for hydrogenation and isomerization. The olefin hydrocarbons of FCC gasoline were hydrogenated and the stability of FCC gasoline was improved under condition of unchanged octane number. 相似文献
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催化剂LNEH用于催化裂化轻汽油选择性加氢脱二烯烃的中试研究 总被引:6,自引:1,他引:5
在中试装置上对催化剂LNEH-1进行了醚化原料催化裂化轻汽油选择性加氢脱除二烯烃的应用研究,考察了该催化剂的加氢性能、异构化能力及稳定性。结果表明,在进料空速为2h-1,反应器入口温度为50℃,氢油体积比为15,反应压力为1.5MPa的操作条件下,产物中单烯和二烯烃含量明显下降,单烯减小量在4个百分点以下,二烯烃质量分数低于0.02%,3-甲基-1-丁烯异构化率大于70%,叔碳烯烃含量增加。经过1500h稳定性试验,产物中的二烯烃质量分数小于0.010%,单烯加氢率小于4个百分点。 相似文献