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Combined mild hydrocracking and fluid catalytic cracking process for efficient conversion of light cycle oil into high-quality gasoline

机译:综合温和加氢裂化和流体催化裂化工艺,以便将光循环油转化为优质汽油

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摘要

The hydrocracking process and the combined process of hydrogenation and catalytic cracking (HCC) are the common processes to convert inferior light cycle oil (LCO) into gasoline. In this work, the two processes were investigated and compared systematically. Based on the analysis of product distribution and hydrocarbon composition, it was found that, the higher hydrogen transfer reactivity of hydrogenated LCO in HCC process had an adverse effect on the yield of gasoline. While for the hydrocracking technology, the high conversion of LCO and high quality of gasoline were hardly satisfied simultaneously. In contrast, the mild hydrocracking process not only contributed to the ring-opening reaction of naphtheno-aromatics efficiently, but also yielded a higher content of aromatics in the gasoline product. The as-obtained unreacted light cycle oil (ULCO) from mild hydrocracking could be further treated in the fluid catalytic cracking unit, and the operating conditions for maximum high-quality gasoline production were optimized herein. Ultimately, a novel combined process of mild hydrocracking and catalytic cracking (MHC-FCC) was proposed. In the MHC-FCC process, LCO was primarily hydrocracked mildly, and then the ULCO was separated and subjected to catalytic cracking reaction, achieving a satisfying conversion -85 wt% and high yield of high-quality gasoline -65 wt%.
机译:加氢裂化方法和氢化和催化裂化(HCC)的组合过程是将劣质光循环油(LCO)转化为汽油的常见方法。在这项工作中,系统地研究了这两种过程。基于产品分布和烃组合物的分析,发现,HCC工艺中氢化LCO的氢转移反应性较高对汽油产量的不利影响。虽然对于加氢裂化技术,但同时对LCO和高质量的汽油的高转化率几乎不满足。相反,温和的加氢裂化过程不仅有效地促进了萘甲芳族学的开环反应,而且还产生了汽油产品中芳烃的含量较高。可以在流体催化裂解单元中进一步处理来自温和加氢裂化的AS获得的未反应的光循环油(ULCO),并且本文优化了最高优质汽油生产的操作条件。最终,提出了一种新的轻裂化加氢裂化和催化裂化(MHC-FCC)的组合过程。在MHC-FCC方法中,LCO主要是水合裂化的温和,然后将UlcO分离并进行催化裂化反应,实现满足的转化转化-85wt%,高产高品质汽油-65wt%。

著录项

  • 来源
    《Fuel》 |2021年第15期|120364.1-120364.12|共12页
  • 作者单位

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Shandong Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Shandong Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Shandong Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Shandong Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Shandong Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Qingdao 266580 Shandong Peoples R China;

  • 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

    Hydrogenation; Catalytic cracking; Hydrocracking; Light cycle oil;

    机译:氢化;催化裂化;加氢裂化;光循环油;

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