February 2009

Special Report: Clean Fuels

Improve hydrogen management of your refinery

A novel approach economically recovers plant gases

Luckwal, K., Mandal, K. K., Indian Oil Corp. Ltd.

Cost for hydrogen generation significantly impacts operating margins of refineries. With the increased processing of heavier crudes and implementing of stringent environmental requirements, hydrogen (H2) costs are forcing refineries to shift more emphasis on better H2 management along with more efficient H2 generation. Steam-reforming based H2 generation units are an integral part of refineries. With the focus shifting on better H2 management, H2 recovery from different offgases such as hydrocracker or catalytic reformer unit (CRU) offgases has also become important. The most widely used method to recover H2 from these offgases is pressure swing adsorber (PSA) units. Although the H2 genera

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