Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Patent
1997-05-07
1999-01-12
Myers, Helane
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Solids contacting and mixing
208174, 208175, 208176, C10G 3510
Patent
active
058582100
ABSTRACT:
A controlled method of changing the transport rate of particles between a source zone and a destination zone is disclosed. Changes are made in a desired value of the pressure difference of the conduit between the two zones through which the particles are transported. The changes are of a magnitude that are determined by the batchwise transfer of particles into the source zone and are performed at a rate that is determined by the dynamics of the process, rather than by the frequency of the batchwise transfers, until the desired final value of the pressure difference is reached. The method minimizes fluctuations in the pressures of the two zones without over-sized vessels or additional equipment that would otherwise be needed to accommodate pressure changes. This results in a savings in construction costs. This invention is adaptable to a multitude of processes for the catalytic conversion of hydrocarbons in which deactivated catalyst particles are regenerated.
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McBride Thomas K.
Moore Michael A.
Myers Helane
Tolomei John G.
UOP LLC
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