FCC catalyst stripping method

Patent · Tue Aug 12 04:00:00 EDT 1986

OSTI ID:5240951

Haddad, J H; Owen, H

A method is described of stripping hydrocarbons from separated catalyst in a fluid catalytic cracking process. The method consists of: passing the separated catalyst through a stripper vessel having an entrance, a catalyst exit and a stripped hydrocarbon exit: causing the separated catalyst to follow a circuitous path concentrically around a riser conversion zone while flowing from the entrance through the stripper vessel to the catalyst exit; injecting a stripping gas at stages such that stripping gas injected at one stage is exposed to only a portion of the separated catalyst above the stripping gas injecting location and moves through the portion in a direction having a net radial component and is mixed with stripping gas from another stage when passing through the stripped hydrocarbon exit; and passing the stripping gas and hydrocarbons stripped from the separated catalyst directly to the stripped hydrocarbon exit.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4605491
• OSTI ID: 5240951
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
FLUID FLOW
GAS FLOW
HYDROCARBONS
MIXING
ORGANIC COMPOUNDS
PYROLYSIS
SEPARATION EQUIPMENT
THERMOCHEMICAL PROCESSES