Replacement of particles in a moving bed process

Details Replacement of particles in a moving bed process Replacement of particles in a moving bed process

1996-08-12

1998-11-24

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208148, 208155, 208156, 208164, 208165, 208171, 208173, 208174, 208175, 208176, C10G 3510

Patent

active

058401768

ABSTRACT:
A method for replacing particles in a process that transfers particles is disclosed. This invention employs a seal zone which is in communication with two zones of the process and in which particles that are being added to the process are purged. This invention allows particles to be replaced without reducing the normal rate of particle transfer through the process, which results in a savings in downtime costs. This invention is adaptable to a multitude of processes for the catalytic conversion of hydrocarbons in which deactivated catalyst particles are regenerated.

REFERENCES:
patent: 4398852 (1983-08-01), Milligan
patent: 4576712 (1986-03-01), Greenwood
patent: 5545312 (1996-08-01), Lawrence et al.

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