Abstract

Steam thermal cracking is an established technology for the production of light olefins, such as ethylene and propylene. The shift to lighter, ethane-based feeds means that propylene production from steam crackers will be lower than the corresponding ethylene production. Therefore, alternative technologies have to be developed to produce more propylene to make up for the shortfall from steam cracking. This review looks at the steam catalytic cracking technology, which combines both catalytic cracking and steam cracking to maximize the production of light olefins. This review looks at the effect of catalyst and technology applied in fluid catalytic cracking reactors to enhance light olefins production. The influence of reaction conditions and the reaction mechanism are also presented.

Graphic Abstract

The graphical abstract shows the feed and steam being fed into the FCC unit from which light olefins and gasoline are produced as the desired products.

中文翻译：

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蒸汽增强催化裂化生产轻烯烃的概述

抽象的

蒸汽热裂化是用于生产轻质烯烃（例如乙烯和丙烯）的成熟技术。向更轻的乙烷基进料的转变意味着蒸汽裂解装置的丙烯产量将低于相应的乙烯产量。因此，必须开发替代技术来生产更多的丙烯，以弥补蒸汽裂解带来的不足。这篇综述着眼于蒸汽催化裂化技术，该技术结合了催化裂化和蒸汽裂化以最大程度地生产轻质烯烃。这篇综述着眼于催化剂和技术在流化催化裂化反应器中应用的效果，以提高轻质烯烃的产量。还介绍了反应条件和反应机理的影响。

图形摘要

图形摘要显示了进料和蒸汽进料到FCC单元中，从中生产出轻质烯烃和汽油作为所需产品。