Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1996-11-06
2000-03-07
Griffin, Walter D.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
502 34, 502 38, 502 56, B01J 3842, B01J 2034
Patent
active
060340185
ABSTRACT:
A method is disclosed for decreasing the emissions of chlorine-containing species from a moving bed process for regenerating spent catalyst particles with a recycle gas stream. A recycle gas stream contacts spent catalyst particles at regeneration conditions, thereby producing a flue gas stream. The flue gas stream which contains chlorine-containing species contacts spent catalyst particles at sorption conditions. The spent catalyst particles sorb the chlorine-containing species from the flue gas stream, thereby producing the recycle gas stream. A portion of the recycle gas stream is vented from the process. This method captures and returns to the process the chlorine-containing species that would be lost from the process and that would need to be replaced by the injection of make-up chlorine-containing species. This method results in a significant savings in capital and operating costs of the process. This method is adaptable to many processes for the catalytic conversion of hydrocarbons in which deactivated catalyst particles are regenerated in a moving bed.
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"Cat Reforming with In-Place Regeneration", written by W.H. Decker et al, published in the Jul. 4, 1955, issue of The Oil and Gas Journal beginning at p. 80.
Pp. 355-397 of book entitled Progress in Catalyst Deactivation, edited by J.L. Figueiredo, published by Martinus Nijhoff Publishers in Boston, Massachusetts in 1982--no month.
Robinson Delmar W.
Sechrist Paul A.
Griffin Walter D.
McBride Thomas K.
Moore Michael A.
Preisch Nadine
Tolomei John G.
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