The use of statistical models for determining the benefits of vanadium passivation

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5568158

Miller, R F; Pawloski, J N ^[1]

---

1. Chemlink Co., Houston, TX (US)

The subject of vanadium passivation on fluid catalytic cracking catalysts is a topic receiving renewed interest. In 1977, McKinney and Mitchell first proposed the use of tin compounds in fluid catalytic cracking units for the purpose of passivating the detrimental effects of vandium on the catalysts. Since that time, a substantial amount of information has been published which reports on the benefits of employing the tin compounds either alone or in combination with antimony. It has been reported that the catalyst microactivity (MAT) loss due to vandium poisoning can be reduced by 30-50%. The hydrogen and coke production due to the catalytic dehydrogenation effect of active vanadium can be reduced by approximately 50-65% and that operations data appears not to support the theory that synergism can be expected between tin and antimony. Because of this renewed interest in vanadium passivation and the report that tin also mitigates the poisoning effects of sodium on catalysts, this work was undertaken in an effort to provide the refiner with a means by which to determine the benefits derived from vanadium passivation.

• OSTI ID: 5568158
• Report Number(s): CONF-880348--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ACTIVATION ENERGY
ANTIMONY
CATALYSTS
CATALYTIC CRACKING
CHEMICAL ACTIVATION
CHEMICAL REACTIONS
CHEMICAL REACTORS
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY
HYDROGENATION
METALS
PASSIVATION
PYROLYSIS
SYNERGISM
THERMOCHEMICAL PROCESSES
TIN COMPOUNDS
TRANSITION ELEMENTS
VANADIUM