EP0052356A1
Expired / Lapsed
EP
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A process for improving the activity of a cracking catalyst and cracking process
Assignee: Phillips Petroleum Co
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Filing: 1981-11-13
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Granted: —
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Expires: 2001-11-13
Abstract
Abstract A method for countering the adverse effect of contaminating metals on a crystalline aluminosilicate catalyst comprising contacting the catalyst with a reducing gas under suitable conditions. In a preferred embodiment, the catalyst contains antimony.
Inventors
- 👤 Brent Joseph Bertus
- 👤 Harold Wayne Mark
- 👤 John Scott Roberts
- 👤 Arnold Martin Schaffer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 04:11
CPC Classifications
B; B01; B01J; B01J38/00; B01J38/04; B01J38/12; B01J38/18; B01J29/00; B01J29/90; B01J38/10; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G11/14; C10G11/18; C10G11/182; B01J29/04; B01J29/06; B01J29/08; B01J29/16; B01J29/166; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
28 words
A process for improving the activity of a cracking catalyst comprising a crystalline zeolite aluminosilicate containing contaminating metals, characterized by contacting said cracking catalyst with a reducing gas.
Claim 2
Dependent Claim
28 words
A process for improving the activity of a cracking catalyst comprising a crystalline zeolite aluminosilicate containing contaminating metals, characterized by contacting said cracking catalyst with a reducing gas.
Claim 3
Dependent Claim
32 words
A process according to claim 1 characterized in that said cracking catalyst is subjected to regeneration with a combustion supporting gas under regeneration conditions prior to being contacted with said reducing gas.
Claim 4
Dependent Claim
51 words
A process according to claim 1 or 2 characterized in-that said cracking catalyst is contacted with said reducing gas at a temperature in the range from 454 to 704°C, in particular wherein said cracking catalyst is contacted with said reducing gas at a temperature in the range from 510 to 677°C.
Claim 5
Dependent Claim
20 words
A process according to at least one of claims 1 to 3 characterized in that said reducing gas comprises hydrogen.
Claim 6
Dependent Claim
26 words
A process according to at least one of claims 1 to 4 characterized in that the catalyst that is contacted with said reducing gas contains antimony.
Claim 7
Dependent Claim
24 words
A process according to claim 5 characterized in that the antimony has been applied to the catalyst in the form of antimony tris(0,0-dipropyl phosphorodithioate).
Claim 8
Dependent Claim
52 words
A process according to at least one of claims 1 to 6 characterized in that said reducing gas comprises at least one of carbon monooxide, hydrogen, propane, methane and ethane; in particular wherein said reducing gas comprises regenerator off gases, or wherein said reducing gas comprises light gases from a catalytic cracker.
Claim 9
Dependent Claim
118 words
A process for the catalytic cracking of a hydrocarbon feed wherein said feed is contacted with a crystalline zeolite aluminosilicate cracking catalyst under cracking conditions and at least a portion of said cracking catalyst is periodically regenerated by contact with a combustion supporting gas under regeneration conditions and at least a portion of the regenerated catalyst is employed in the catalytic cracking of hydrocarbon feed, characterized by contacting at least a portion of said regenerated catalyst with a reducing gas under conditions suitable for countering effects of contaminating metals thereon, in particular under the conditions according to one of claims 1 to 7, and employing at least a portion of said reduced catalyst in cracking said hydrocarbon feed.
Claim 10
Dependent Claim
20 words
A process according to claim 8 characterized in that said hydrocarbon feed contains at least one of nickel and vanadium.
Claim 11
Dependent Claim
34 words
A process according to claim 8 or 9 characterized in that the antimony content of the catalyst according to claim 5 or 6 is caused by dissolving the antimony compound in said hydrocarbon feed.
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