Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Patent
1988-03-28
1989-10-10
Caldarola, Glenn
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Solids contacting and mixing
208176, 208147, 141 67, 422144, C10G 3500
Patent
active
048729698
ABSTRACT:
A method and apparatus are provided for controlling the transfer of particles between zones of different pressure using particle collection and particle transfer conduits. The solids are moved from a low pressure zone to a high pressure zone by means of a valveless lock hopper system that vents all of the gas from the collection zones through the particle collection conduits. Venting gas from the collection zones through the transfer conduits prevents erosion of control valves and eliminates the need for filters which are prone to clogging. The venting of gas is accomplished by varying the size of the transfer conduits between zones. The invention is particularly applicable in the regeneration of catalyst used in hydrocarbon conversion processes such as catalytic reforming.
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Caldarola Glenn
McBride Thomas K.
Tolomei John G.
UOP
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