Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Patent
1994-05-06
1996-08-13
Cross, E. Rollins
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
055453120
ABSTRACT:
A method and apparatus 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
Lawrence Roger R.
Micklich Frank T.
Ressl Charles T.
Sechrist Paul A.
Cross E. Rollins
Griffin Walter D.
McBride Thomas K.
Moore Michael A.
Tolomei John G.
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