EP0209997A1
Expired / Lapsed
EP
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Catalytic dewaxing of hydrocarbons using a molecular sieve catalyst
Assignee: Chevron USA Inc
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Filing: 1986-06-27
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Granted: —
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Expires: 2006-06-27
Abstract
Abstract Catalytic dewaxing of a hydrocarbon oil feedstock boiling above 176°C is effected by contacting the feedstock with a catalyst which comprises an intermediate pore size sil- icoshtminophosphate molecular sieve and at least one Group VIII metal such as platinum.
Inventors
- 👤 Stephen J. Miller
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 11:53
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; B; B01; B01J; B01J29/00; B01J29/82; B01J29/84; B01J29/85
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
A method of catalytically dewaxing a hydrocarbon oil feedstock boiling above 350°F (176°C) and containing waxy hydrocarbons, which comprises contacting said oil feedstock with a catalyst comprising an intermediate pore size silicoaluminophosphate (SAPO) molecular sieve and at least one Group VIII metal to selectively convert at least some of said waxy hydrocarbons to lower molecular weight non-waxy hydrocarbons.
Claim 2
Independent Claim
58 words
A method of catalytically dewaxing a hydrocarbon oil feedstock boiling above 350°F (176°C) and containing waxy hydrocarbons, which comprises contacting said oil feedstock with a catalyst comprising an intermediate pore size silicoaluminophosphate (SAPO) molecular sieve and at least one Group VIII metal to selectively convert at least some of said waxy hydrocarbons to lower molecular weight non-waxy hydrocarbons.
Claim 3
Dependent Claim
16 words
A method according to Claim 1, wherein the silicoaluminophosphate molecular sieve is SAPO-11, SAPO-31 or SAPO-41.
Claim 4
Dependent Claim
17 words
A method according to Claim 1 or 2, wherein the Group VIII metal is platinum or palladium.
Claim 5
Dependent Claim
20 words
A method according to Claim 1, wherein the silicoaluminophosphate molecular sieve is SAPO-11 and the Group VIII metal is platinum.
Claim 6
Dependent Claim
32 words
A method according to Claim 1, 2, 3 or 4, wherein the Group VIII metal is present in the range from 0.01% to 10% based on the weight of the molecular sieve.
Claim 7
Independent Claim
54 words
A method according to any preceding claim, wherein the method is conducted at a temperature of from 200 to 475°C, a pressure of from 15 to 3000 psig (103 to 20684 kP), a liquid hourly space velocity of from 0.1 to 20 hr-l, and a hydrogen circulation rate of from 500 to 30,000 SCF/bbl.
Claim 8
Independent Claim
15 words
A method according to any preceding claim, wherein the feedstock is a middle distillate oil.
Claim 9
Independent Claim
18 words
A method according to any one of Claims 1 to 6, wherein the feedstock is a lube oil.
Claim 10
Independent Claim
19 words
A method according to any preceding claim, wherein the feedstock contains less than 50 ppm by weight of nitrogen.
Claim 11
Dependent Claim
22 words
A process according to any preceding claim, wherein the catalyst has a pore size in the range from 5.5 to 6.2 Angstroms.
References Cited (Backward Citations)
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