Passivation of metal contaminated cracking catalysts

Details Passivation of metal contaminated cracking catalysts Passivation of metal contaminated cracking catalysts

1986-09-16

1989-03-28

Caldarola, Glenn

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208157, 502 22, 502 23, C10G 1106

Patent

active

048161349

ABSTRACT:
This invention provides a nozzle for discharging a relatively small amount of a metals passivating agent into a catalytic cracking unit at a relatively high velocity through a relatively large diameter opening. This invention further provides a process for discharging a relatively small amount of a metals passivating agent into a high-temperature zone of a catalytic cracking unit, wherein the temperature range of the high-temperature zone exceeds the melting point of the particular passivating agent, through the utilization of a metals passivating agent injection nozzle which disperses the passivating agent, prior to discharging the agent into a catalytic cracking system, and accelerates this dispersed metals passivating agent to a maximum discharge velocity by injecting a dispersing agent into the novel nozzle at a location behind that at which the passivating agent is injected, and then discharging the dispersed metals passivating agent at a relatively high velocity through a passage having a relatively large inside diameter.

REFERENCES:
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patent: 4153536 (1979-05-01), McKay
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patent: 4427537 (1984-01-01), Dean et al.
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patent: 4459203 (1984-07-01), Beech et al.
patent: 4555328 (1985-11-01), Krambeck et al.
Ametek Steam Jet Syphon (product brochure), 1982, distributed by: Shutte and Koerting (STK) Division of Ametek Inc.

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