Passivation of metal contaminated cracking catalysts

Patent · Tue Mar 28 00:00:00 EST 1989

OSTI ID:6080348

Knopp, K G; Lasater, A S

This patent describes a process for the catalytic cracking of hydrocarbon feedstocks wherein an antimony-containing metals passivating agent is discharged through a sidewall of a catalytic cracking unit having a hydrocarbon cracking zone and a catalyst regeneration zone. The improvement consists contacting the antimony-containing metal passivating agent with a dispersing agent within a nozzle having an inside wall surface defining a chamber, wherein the chamber has an upstream end portion and a downstream end portion. The chamber downstream end portion has a discharge end portion which opens into the catalytic cracking unit sidewall and discharges a dispersed antimony-containing metals passivating agent into the catalyst regeneration zone of the catalytic cracking unit. The temperature within the catalyst regeneration zone exceeds the melting point of the antimony-containing metals passivating agent. The dispersing agent is introduced into the chamber upstream end portion through a dispersing agent introduction means having an injection end portion which opens into the chamber upstream end portion. Then, the antimony-containing metals passivating agent is introduced into the chamber upstream end portion through a metals passivating agent introduction means having an injection end portion which opens into the chamber upstream end portion at a point downstream of the dispersing agent introduction means discharge end portion.

• Assignee: Phillips Petroleum Co., Bartlesville, OK
• Patent Number(s): US 4816134
• OSTI ID: 6080348
• Resource Relation: Patent File Date: Filed date 16 Sep 1986
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
ANTIMONY
CORROSION RESISTANCE
CATALYTIC CRACKING
CORROSION INHIBITORS
CHEMICAL REACTORS
PASSIVATION
CATALYSTS
CHEMICAL COMPOSITION
PETROLEUM
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
METALS
PYROLYSIS
THERMOCHEMICAL PROCESSES
020400* - Petroleum- Processing