US4439310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum processing with low acidity catalyst
Assignee: Mobil Oil AS
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Filing: 1981-06-16
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Granted: 1984-03-27
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Expires: 2001-06-16
Abstract
Abstract A method for upgrading a high boiling hydrocarbon fraction by reducing the molecular weight of at least a portion of the waxy or non-waxy constituents of the fraction with a catalyst composed of a heat stable crystalline zeolite in a matrix comprising a degraded heat-sensitive crystalline zeolite.
Inventors
- 👤 Costandi A. Audeh
- 👤 Eric J. Y. Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:57
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/65; B01J29/70
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
128 words
A process for upgrading a high boiling hydrocarbon oil, in which process, at least a portion of the waxy or non-waxy crackable constituents of said oil are cracked to normally liquid products of lower boiling range, which process comprises contacting said hydrocarbon oil with a catalyst of enhanced gasoline and distillate selectivity which is a heat-stable crystalline zeolite having a silica to alumina ratio greater than 12 and a constraint index of 1 to about 12 in a matrix comprising an amorphous siliceous oxide which is a thermally degraded heat-sensitive crystalline zeolite, said catalyst having an acid activity measured by the alpha scale of less than 10, with said contacting being conducted at 650 to 850 degrees F. and at a pressure not less than about 200 psi.
Claim 2
Dependent Claim
128 words
A process for upgrading a high boiling hydrocarbon oil, in which process, at least a portion of the waxy or non-waxy crackable constituents of said oil are cracked to normally liquid products of lower boiling range, which process comprises contacting said hydrocarbon oil with a catalyst of enhanced gasoline and distillate selectivity which is a heat-stable crystalline zeolite having a silica to alumina ratio greater than 12 and a constraint index of 1 to about 12 in a matrix comprising an amorphous siliceous oxide which is a thermally degraded heat-sensitive crystalline zeolite, said catalyst having an acid activity measured by the alpha scale of less than 10, with said contacting being conducted at 650 to 850 degrees F. and at a pressure not less than about 200 psi.
Claim 3
Dependent Claim
23 words
The process described in claim 1 wherein said heat-stable zeolite is selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-35 and ZSM-38.
Claim 4
Dependent Claim
26 words
The process described in claim 1 wherein the precursor to said degraded heat-sensitive crystalline zeolite has the x-ray diffraction pattern set forth in Table I herein.
Claim 5
Dependent Claim
33 words
The process described in claim 1 wherein said heat-stable zeolite comprises 5 to 80% by weight of said catalyst, and said amorphous siliceous oxide comprises 20 to 95% by weight of said catalyst.
Claim 6
Dependent Claim
26 words
The process described in claim 1 or claim 2 or claim 3 or claim 4 wherein said contacting is conducted in the presence of gaseous hydrogen.
Claim 7
Dependent Claim
15 words
The process described in claim 1 wherein said hydrocarbon oil is a waxy crude oil.
Claim 8
Dependent Claim
22 words
The process described in claim 2 wherein said catalyst has an acid activity measured by the alpha scale of less than unity.
Claim 9
Dependent Claim
19 words
The process described in claim 7 wherein said heat-sensitive crystalline zeolite has the X-ray diffraction pattern set forth herein.
Claim 10
Dependent Claim
33 words
The process described in claim 7 wherein said heat-stable zeolite comprises 5 to 80% by weight of said catalyst, and said amorphous siliceous oxide comprises 20 to 95% by weight of said catalyst.
Claim 11
Dependent Claim
21 words
The process described in claim 7 or claim 8 or claim 9 wherein said hydrocarbon oil is a waxy crude oil.
Claim 12
Dependent Claim
31 words
The process described in claim 7 or claim 8 or claim 9 wherein said heat stable crystalline zeolite is ZSM-5 and said contacting is conducted in the presence of gaseous hydrogen.
Claim 13
Dependent Claim
31 words
The process described in claim 1 wherein said heat-stable crystalline zeolite is in the alkali metal form and said acid activity measured by the alpha scale is less than about 1.
Claim 14
Dependent Claim
46 words
The process described in claim 1 or 2 or 3 or 4 or 6 or 7 or 8 or 9 or 12 wherein said heat-stable crystalline zeolite is in the sodium form and said acid activity measured by the alpha scale is less than about 0.2.
Claim 15
Dependent Claim
100 words
A process for dewaxing a hydrocarbon oil, which process comprises contacting said hydrocarbon oil with a catalyst of enhanced gasoline and distillate selectivity, which is a heat-stable crystalline zeolite having a silica to alumina ratio greater than 12 and a constraint index of 1 to about 12 in a matrix comprising an amorphous siliceous oxide which is a thermally degraded heat-sensitive crystalline zeolite, said catalyst having an acid activity measured by the alpha scale of less than about 1, with said contacting being conducted at 650 to 850 degrees F. and at a pressure not less than about 200 psi.
Claim 16
Dependent Claim
100 words
A process for dewaxing a hydrocarbon oil, which process comprises contacting said hydrocarbon oil with a catalyst of enhanced gasoline and distillate selectivity, which is a heat-stable crystalline zeolite having a silica to alumina ratio greater than 12 and a constraint index of 1 to about 12 in a matrix comprising an amorphous siliceous oxide which is a thermally degraded heat-sensitive crystalline zeolite, said catalyst having an acid activity measured by the alpha scale of less than about 1, with said contacting being conducted at 650 to 850 degrees F. and at a pressure not less than about 200 psi.
Claim 17
Dependent Claim
13 words
The process described in claim 14 wherein the heat-stable crystalline zeolite is ZSM-5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |