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首页> 外文期刊>Fuel >Enhancing propylene production from catalytic cracking of Arabian Light VGO over novel zeolites as FCC catalyst additives
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Enhancing propylene production from catalytic cracking of Arabian Light VGO over novel zeolites as FCC catalyst additives

机译：作为FCC催化剂添加剂的新型沸石，通过阿拉伯轻型VGO催化裂化提高丙烯产量

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摘要

The catalytic cracking of vacuum gas oil over fluid catalytic cracking (FCC) catalyst containing novel additives was investigated to enhance propylene yield. A conventional ZSM-5, mesoporous ZSM-5 (Meso-Z), TNU-9 and SSZ-33 zeolite were tested as additives to a commercial equilibrium USY FCC catalyst (E-Cat). Their catalytic performance was assessed in a fixed-bed micro-activity test unit (MAT) at 520 ℃ and various catalyst/oil ratios. The cracking activity of all E-Cat/additives did not decrease by using these additives. The highest propylene yield of 12.2 wt.% was achieved over E-Cat/Meso-Z compared with 9.0 wt.% each over E-Cat/ZSM-5 and E-Cat/TNU-9, at similar gasoline yield penalty. The enhanced production of propylene over Meso-Z is attributed to its mesopores that suppressed secondary and hydrogen transfer reactions and offered easier transport and accessibility to active sites. The lower enhancement of propylene over the large-pore SSZ-33 additive was due to its high-hydrogen transfer activity. Gasoline quality was improved by the use of all additives, as octane rating increased by 7-12 numbers for all E-Cat/ additives.
机译：为了提高丙烯的收率，研究了真空瓦斯油在含有新型添加剂的流化催化裂化（FCC）催化剂上的催化裂化。测试了常规ZSM-5，介孔ZSM-5（Meso-Z），TNU-9和SSZ-33沸石作为商业平衡USY FCC催化剂（E-Cat）的添加剂。在固定床微活性试验装置（MAT）中于520℃和各种催化剂/油比下评估了它们的催化性能。使用这些添加剂不会降低所有E-Cat /添加剂的裂解活性。在E-Cat / Meso-Z上，丙烯的最高收率为12.2 wt。％，而在E-Cat / ZSM-5和E-Cat / TNU-9上，丙烯收率分别为9.0 wt。％。与Meso-Z相比，丙烯产量的提高归因于其中孔抑制了次级和氢转移反应，并提供了更易于运输和接近活性位的方法。丙烯相对于大孔SSZ-33添加剂的增幅较低，是由于其高氢转移活性。通过使用所有添加剂，汽油质量得到了改善，因为所有E-Cat /添加剂的辛烷值提高了7-12个数字。

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  • 来源
    《Fuel》 |2011年第2期|p.459-466|共8页
  • 作者

    M.A.B. Siddiqui; A.M. Aitani; M.R. Saeed; N. Al-Yassir; S. Al-Khattaf;

  • 作者单位

    Center of Research Excellence in Petroleum Refining & Petrochemicals, King Fahd University of Petroleum & Minerals, Dhahran 37261, Saudi Arabia;

    Center of Research Excellence in Petroleum Refining & Petrochemicals, King Fahd University of Petroleum & Minerals, Dhahran 37261, Saudi Arabia;

    Center of Research Excellence in Petroleum Refining & Petrochemicals, King Fahd University of Petroleum & Minerals, Dhahran 37261, Saudi Arabia;

    Center of Research Excellence in Petroleum Refining & Petrochemicals, King Fahd University of Petroleum & Minerals, Dhahran 37261, Saudi Arabia;

    Center of Research Excellence in Petroleum Refining & Petrochemicals, King Fahd University of Petroleum & Minerals, Dhahran 37261, Saudi Arabia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    FCC additive; catalytic cracking; gasoline; propylene; light olefins;

    机译：FCC添加剂;催化裂化;汽油;丙烯;轻质烯烃;

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