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Conference Presentations
November 10-11, 2009
Understanding and improving the energy efficiency of an FCC
-- Understanding and improving the energy efficiency of an FCC
KBC has been involved in improving the energy efficiencies of
many FCC units by applying Process Modeling, Best Technology and
Gap Analysis Methodology.
The energy efficiency of an FCC unit does not relate only to the
coke production or coke yield. The difference in heat balance
across Reactor/Regenerator system can also be explained by
process conditions and features such as catalyst coolers and
partial burn operation. If the heat generated by an increased
amount of coke is used efficiently, the increase in coke make
will largely be offset by fuel savings achieved elsewhere in the
refinery. (Comment: Yes, energy wise it is O.K. but with the
increase in coke make the product yield will be low). The
process conditions such as changing preheat temperature,
catalyst cooler duty and degree of partial combustion are some
of the energy efficient ways to control the heat balance of an
FCC, while Gasoline recycle or injection of water to the riser
are considered as energy inefficient ways to control the heat
balance.
To really improve the energy efficiency of an FCC the refinery
must focus on four major categories: flue gas train, shaftwork/power
generation, steam consumption and pumparounds in the Main
Fractionator.
• Today the continuing high price of energy, CO2 legislation and
corporate commitments to meet emissions targets pose tough
challenges to refineries to reduce their energy consumption.
• The FCC unit typically contributes 15% to 20% of the total CO2
emissions in a European refinery and so it is one of the main
units, the refinery should focus on when targeting for energy
reduction.
(Comment: These two bullet points can essentially be a good
introduction right in the beginning of this abstract)
• Changing preheat temperature, catalyst cooler duty and partial
combustion are energy efficient ways to control the heat balance
of an FCC. But to really improve the energy efficiency, the
refinery must focus on energy efficient features in 4 major
categories: (1) Flue Gas Train (2) Shaftwork & Power Generation
(3) Steam Consumption and (4) Main Column Heat Removal.
Find out how to
present in
Bahrain
We'll add papers as they are confirmed. We
are ALWAYS open to additional presentations, near misses and
shared learning's by refiners.
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