Ni-W/SSY催化裂化生物正构烷烃制备航空燃料
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摘要
以超稳SSY分子筛负载Ni-W制得加氢裂化催化剂,用于加氢裂化生物正构烷烃(C16、C18),得到以煤油和汽油为主的液体生物燃料,可以提高中油组分收率。通过氮气物理吸附,扫描电镜(SEM),X射线光电子能谱(XPS)等分析手段对催化剂进行了表征。在微型固定床连续加氢裂化反应器上,考察了反应条件对单程转化率和煤油/汽油质量比的影响规律。结果表明:255℃、1.0 MPa、质量空速为0.33 h-1、氢油比为4 000:1的反应条件下,单程转化率达到60%以上,煤油与汽油质量比超过2.0。Ni-W/SSY催化剂活性高,可以用于长链烷烃加氢裂化制备煤油组分为主的液体燃料。
The Ni-W/SSY catalyst prepared by incipient impregnation using a super steady Y(SSY) zeolite was used to produce biofuels mainly composed of bio-kerosene and bio-gasoline from bio-C16 and C18n-alkanes by hydrocracking in which the kerosene yield can be improved. The catalyst was characterized by nitrogen physisorption, scanning electron microscope(SEM) and X-ray photoelectron spectroscopy(XPS). In the continuous hydrogenation on a micro fixed bed cracking reactor, the effect of reaction conditions on the one-through conversion and the mass ratio of kerosene to gasoline were studied. The results indicated that the single pass conversion of n-alkanes exceeded 60% and the mass ratio of kerosene to gasoline exceeded 2.0 when the reaction was carried out at 255 ℃, 1.0 MPa, space velocity(WHSV) 0.33 h-1 and hydrogen-oil ratio of 4 000:1. With its high catalytic activity, Ni-W/SSY can be used to produce kerosene based liquid fuels using long-chain alkanes as raw materials.
The Ni-W/SSY catalyst prepared by incipient impregnation using a super steady Y(SSY) zeolite was used to produce biofuels mainly composed of bio-kerosene and bio-gasoline from bio-C16 and C18n-alkanes by hydrocracking in which the kerosene yield can be improved. The catalyst was characterized by nitrogen physisorption, scanning electron microscope(SEM) and X-ray photoelectron spectroscopy(XPS). In the continuous hydrogenation on a micro fixed bed cracking reactor, the effect of reaction conditions on the one-through conversion and the mass ratio of kerosene to gasoline were studied. The results indicated that the single pass conversion of n-alkanes exceeded 60% and the mass ratio of kerosene to gasoline exceeded 2.0 when the reaction was carried out at 255 ℃, 1.0 MPa, space velocity(WHSV) 0.33 h-1 and hydrogen-oil ratio of 4 000:1. With its high catalytic activity, Ni-W/SSY can be used to produce kerosene based liquid fuels using long-chain alkanes as raw materials.
引文
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[2]Bouchy C,Hastoy G,Guillon E.Fischer-Tropsch waxes upgrading via hydrocracking and selective hydroisomerization[J].Oil&Gas Science and Technology,2009,64(1):91-112.
[3]Mohammad M,Kandaramath Hari T,Yaakob Z,et al.Overview on the production of paraffin based-biofuels via catalytic hydrodeoxygenation[J].Renewable and Sustainable Energy Reviews,2013,22:121-132.
[4]Farouq A,Twaiq F,Abdul R M,et al.Performance of composite catalysts in palm oil cracking for the production of liquid fuels and chemicals[J].Fuel Processing Technology,2004,85(11):1283-1300.
[5]徐俊明,肖国民,周永红,等.油脂热化学转化制备可再生液体燃料油研究进展[J].化工进展,2011,30(7):1456-1460.Xu Junming,Xiao Guoming,Zhou Yonghong,et al.Renewable biofuel production from thermal-chemical conversion of triglyceride[J].Chemical Industry and Engineering Progress,2011,30(7):1456-1460.
[6]Serrano-Ruiz J C,Ramos-Fernández E V,Sepúlveda-Escribano A.From biodiesel and bioethanol to liquid hydrocarbon fuels:new hydrotreating and advanced microbial technologies[J].Energy&Environmental Science,2012,5:5638-5652.
[7]Nygren E,Aleklett K,H??k M.Aviation fuel and future oil production scenarios[J].Energy Policy,2009,37(10):4003-4010.
[8]胡徐腾,齐泮仑,付兴国,等.航空生物燃料技术发展背景与应用现状[J].化工进展,2012,31(8):1625-1630.Hu Xuteng,Qi Panlun,Fu Xingguo,et al.Technology development background and application status on aviation biofuel[J].Chemical Industry and Engineering Progress,2012,31(8):1625-1630.
[9]陈凯,钱璟,杨智渊,等.航空生物燃料生产工艺研究进展[J].石油化工,2012,41(8):974-978.Chen Kai,Qian Jing,Yang Zhiyuan,et al.Advances in aviation biofuel production technology[J].Petrochemical Technology,2012,41(8):974-978.
[10]韩崇仁.加氢裂化工艺与工程[M].中国石化出版色,2012:183.