Advances in the desulfurization of fluid catalytic cracking naphtha

doi:10.16085/j.issn.1000-6613.2019-1118

Abstract

Abstract:

Fluid catalytic cracking (FCC) naphtha is the main blending source of motor gasoline in China, but its sulfur content is always much higher than that of vehicle gasoline quality standards. Therefore, reducing sulfur content efficiently is the key to the refining treatment of FCC naphtha. The clean production technology of FCC naphtha was summarized in this paper from the following three aspects: selective hydrodesulfurization technologies (Prime-G⁺, SCANfining, CD Tech, RSDS, OCT-M and DSO), selective hydrodesulfurization coupled octane number recovery technologies (RIDOS and GARDES) and adsorption desulfurization technology (S-Zorb). The principle, features and applications of those technologies were introduced. The contradiction between deep desulfurization and octane number maintenance as well as olefin saturation was pointed out. The researches on the process modification, operating conditions optimization and new catalysts development should be carried out in the future.

Key words: catalytic cracking naphtha, hydrodesulfurization, adsorption desulfurization, process, catalyst

摘要：

催化裂化汽油是我国车用汽油的主要调和来源，但是硫含量远高于车用汽油质量标准的要求值；因此如何高效降低硫含量是催化裂化汽油精制处理的关键。本文综述了国内外催化裂化汽油脱硫精制生产技术。从选择性加氢脱硫技术（Prime-G⁺技术、SCANfining技术、CD Tech技术、RSDS技术、OCT-M技术和DSO技术），选择性加氢脱硫耦合辛烷值恢复技术（RIDOS技术和GARDES技术）以及吸附脱硫技术（S-Zorb技术）三方面来阐述国内外催化裂化汽油清洁化技术的原理、特点及其应用。指出深度脱硫和辛烷值保持、烯烃饱和率之间的矛盾，后续研究者仍需在工艺流程改进、工艺条件优化以及新型催化剂开发等方面做出巨大努力。

关键词: 催化裂化汽油, 加氢脱硫, 吸附脱硫, 工艺, 催化剂

CLC Number:

TE624

Hui WANG, Rui ZHANG, Haiyan LIU, Xianghai MENG. Advances in the desulfurization of fluid catalytic cracking naphtha[J]. Chemical Industry and Engineering Progress, 2020, 39(6): 2354-2362.

王慧, 张睿, 刘海燕, 孟祥海. 催化裂化汽油脱硫精制技术研究进展[J]. 化工进展, 2020, 39(6): 2354-2362.

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