October 2004


Improve FCC yields to meet changing environment—Part 2

Controlling emissions is another vital component for revamp projects

T?o optimize performance and comply with environmental mandates, refiners balance many operating parameters of the fluid catalytic cracking (FCC) unit. One of the greatest challenges of improving this unit is that a modification in one area can initiate a more severe problem in another area of the unit. Refiners must maintain an overall perspective of how a change in feed, temperature, etc., will affect the total unit operation. Besides increasing profitability of the FCC unit, refiners are challenged to balance capacity, yield and operability revamps with environmental performance. Environmental investments often have no economic payback and are viewed as out-of-pocket expenses. In Part 2,

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