December 2010

Special Report: Plant Design and Engineering

Best practices in treating liquefied petroleum gas are defined

Advantages of removing H2S before the LPG unit and energy optimization of the LPG splitter

Ardalan, B., Khorsand Movaghar, M., Maleki, M., Energy Industries Engineering and Design Consultant Company (EIED)

This article presents the basic engineering design of a liquefied petroleum gas (LPG) recovery unit at the Khuzestan oil refinery, Iran. This refinery, like other oil refineries, consists of one LPG recovery unit. The feed to the LPG recovery unit comes from three different sources. The first feed is from a catalytic cracking reforming (CCR) unit that is completely sweet with no H2S content. The second feed is from a hydrocracking unit that is sour and has H2S content. The third feed comes from a stabilizer in the crude distillation unit (CDU) which is also sour and has H2S and mercaptan contents. The LPG recovery unit in this project consists of two main separation sections including dee

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