Complexity factors

Typical complexity factors for the major process units in a refinery:

Unit Factor
Atmospheric distillation 1.0
Vacuum distillation 2.0
Vacuum flash 1.0
Thermal cracking 3.0
Visbreaking 2.0
Coking 5.5
Calcining 108
Asphalt 1.5
Lubes 60.0
FCC (50% conversion) 5.0
FCC (60% conversion) 6.0
Hydrocracking 6.0
Reforming 5.0
Isomerization 3.0
Alkylation 11.0
Polymerization 9.0
Oxygenates 10.0
Aromatics 20.0
Hydrorefining 3.0
Hydrotreating 1.7
Hydrogen production (MCFD) 1.0
Hydrogen recovery (MCFD) 1.0
Sulfur (Ton/day) 85.0

The Refinery Reference Desk includes content derived from our industry experts as well as from public data sources such as company websites. Nothing herein is intended to serve as investment advice. This material is based on information that we believe to be reliable and adequately comprehensive, but we do not represent that such information is in all respects accurate or complete. McKinsey Energy Insights does not accept any liability for any losses resulting from use of the content.

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