Mitigate FCC feedstock contaminants to improve yield slates and quality
The fluid catalytic cracking (FCC) unit`s value as a fuel and olefins producer continues to grow in proportion to demand in developing markets. However, because of free market dynamics, many refiners processing imported crudes are challenged by the variability in crude slates. Depending on the crude processed, contaminants such as nickel, vanadium sulfur and nitrogen will affect the refiner`s pre-determined objective of extending run lengths in order to maximize their margins differential. The refiners` crude traders must endeavor to find the most economical and {open_quotes}processable{close_quotes} crude (hopefully low in sulfur, nitrogen and heavy metals), while refinery operators and process engineers must design enough flexibility into major units such as the FCC, to process a variety of crudes available on the market. Just as importantly, refiners with {open_quotes}captive{close_quotes} crude sources, are challenged by the high level of feedstock contaminants (i.e., catalyst deactivators) contained in their low API gravity crudes. In either case, the common denominator affecting FCC process flexibility (at any refinery) is the extent of FCC catalyst deactivation by contaminants present in the crude oil.
- OSTI ID:
- 530462
- Journal Information:
- Fuel Technology amp Management, Vol. 7, Issue 2; Other Information: PBD: Mar 1997
- Country of Publication:
- United States
- Language:
- English
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