Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1978-01-05
1979-06-12
Garvin, Patrick
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
B01J 2120, B01J 2938, B01J 2390
Patent
active
041579852
ABSTRACT:
An improved method for restoring catalytic activity of solid particles used to promote hydrocarbon conversion when the particles are contacted with oxygen-containing vapors to form a mixture therewith and then partially separated therefrom by means of an apparatus having one or more improvements, all of which lessen the amount particle attrition that otherwise occurs from the use of prior art devices for separating particles from a mixture of such particles and vapors. These improvements include: an arresting means to slow the velocity of at least a portion of those particles which preferentially are induced to move toward a cylindrical surface; a flow reversal means to substantially change the direction of flow of a mixture of vapors and particles at an inlet means; and a plate means located between a particle inlet and particle outlet means for collecting at least a portion of those particles which had been separated from a mixture of vapors and particles prior to arriving at the location of the plate means.
REFERENCES:
patent: 2367281 (1945-01-01), Johnson
patent: 2607438 (1952-09-01), Bailey
patent: 3885931 (1975-05-01), Shaller
patent: 4032299 (1977-06-01), Pulak
Atlantic Richfield Company
Garvin Patrick
Konopka P. E.
Uxa Frank J.
Welsh Stanley M.
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