US3668115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for charging catalyst
Assignee: Atlantic Richfield Co
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Filing: 1970-03-27
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Granted: 1972-06-06
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Expires: 1990-03-27
Abstract
Abstract An improved process for charging a solid catalyst, such as an extruded catalyst, to a fixed bed reactor by charging the catalyst at a rate of fill of the reactor of up to about 17 inches per minute and in a manner such that the average orientation of catalyst particle lengths in the catalyst bed is substantially horizontal.
Inventors
- 👤 George A Uhl
- 👤 Lloyd A Baillie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:51
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/003; C; C10; C10G; C10G49/00; C10G49/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
19 words
A method of claim 1 wherein the rates of fill is from 1 to about 6 inches per minute.
Claim 2
Dependent Claim
20 words
A method of claim 2 wherein the rate of fill is from about 2 to about 4 inches per minute.
Claim 3
Dependent Claim
32 words
A method of claim 1 wherein the free fall distance is from about 5 to about 125 feet and the width of the reactor is from about 1 to about 15 feet.
Claim 4
Dependent Claim
32 words
A method of claim 2 wherein the free fall distance is from about 5 to about 125 feet and the width of the reactor is from about 1 to about 15 feet.
Claim 5
Dependent Claim
32 words
A method of claim 5 wherein the free fall distance is from about 10 to about 70 feet and the width of the reactor is from about 3 to about 13 feet.
Claim 6
Dependent Claim
25 words
A method of claim 1 wherein the catalyst particles have a diameter of from about 1/32 of an inch to about 1/4 of an inch.
Claim 7
Dependent Claim
57 words
A method of claim 5 wherein the catalyst particles have a diameter of from about one thirty-second of an inch to about one fourth of an inch and the catalyst particles are selected from the group consisting of an oxidation catalyst, a hydrodesulfurization catalyst, a hydrocracking catalyst, a cracking catalyst, a reforming catalyst, and a hydrogenation catalyst.
Claim 8
Dependent Claim
50 words
A method of claim 8 wherein the catalyst particles have a diameter of from about one-sixteenth sixteenth of an inch to about one-eighth of an inch, and the catalyst particles are selected from the group consisting of a hydrodesulfurization catalyst, a hydrocracking catalyst, a reforming catalyst, and a hydrogenation catalyst.
Claim 9
Dependent Claim
21 words
A method of claim 1 wherein the length over diameter of the catalyst particles is from about 1.5 to about 6.
Claim 10
Dependent Claim
21 words
A method of claim 7 wherein the length over diameter of the catalyst particles is from about 1.5 to about 6.
Claim 11
Dependent Claim
21 words
A method of claim 8 wherein the length over diameter of the catalyst particles is from about 1.5 to about 6.
Claim 12
Dependent Claim
20 words
A method of claim 8 wherein the length over diameter of the catalyst particle is from about 2 to 5.
Claim 13
Independent Claim
120 words
A method for increasing the bulk density of a fixed catalyst bed per unit volume of a reactor which comprises charging to the reactor in downflow relationship to said reactor, solid catalyst particles having a substantially cylindrical geometry on an average basis at a rate of fill of the reactor of up to about 17 vertical inches per minute, and at an average free fall distance of the catalyst particles through a gaseous medium to catalyst surface of at least about 1 foot, distributing the catalyst lengths in the catalyst bed in a substantially horizontal orientation on an average basis to form a fixed bed, and then subjecting the fixed catalyst bed to a catalytic hydrocarbon conversion or refining process.
Claim 14
Dependent Claim
19 words
A method of claim 14 wherein the rate of fill is from 1 to about 6 inches per minute.
Claim 15
Dependent Claim
31 words
A method of claim 14 wherein the free fall distance is from about 5 to 125 feet and the width of the reactor is from about 1 to about 15 feet.
Claim 16
Dependent Claim
55 words
A method of claim 16 wherein the catalyst particles have a diameter from about one thirty-second of an inch to about one-fourth of an inch and the catalyst particles are selected from the group consisting of an oxidation catalyst, a hydrodesulfurization catalyst, a hydrocracking catalyst, a cracking catalyst, a reforming catalyst, and a hydrogenation catalyst.
Claim 17
Dependent Claim
45 words
A method of claim 17 wherein the length over diameter of the catalyst particle is from about 1.5 to about 6 1and the catalyst particle is selected from the group consisting of a hydrogenation catalyst, a hydrodesulfurization catalyst, a hydrocracking catalyst and a reforming catalyst.
Claim 18
Dependent Claim
132 words
In a hydrogenation process wherein a hydrogenation catalyst is charged to a hydrogenation fixed bed reactor, a feedstock comprising hydrogen and a hydrogenateable organic material are contacted with said hydrogenation catalyst and a hydrogenated organic material is recovered, the improvement which comprises charging to the reactor in downflow relationship to said reactor, solid catalyst particles having a substantially cylindrical geometry on an average basis at a rate of fill of the reactor of up to about 17 vertical inches per minute, and at an average free fall distance of the catalyst particles through a gaseous medium to catalyst surface of at least about 1 foot, distributing the catalyst lengths in the catalyst bed in a substantially horizontal orientation to form said fixed bed, and then contacting said fixed bed with said feedstock.
Claim 19
Dependent Claim
20 words
A method of claim 19 wherein the rate of fill is from about 1 to about 6 inches per minute.
Claim 20
Dependent Claim
32 words
A method of claim 19 wherein the free fall distance is from about 5 to about 125 feet and the width of the reactor is from about 1 to about 15 feet.
Claim 21
Dependent Claim
31 words
A method of claim 21 wherein the free fall distance is from about 10 to about 70 and the width of the reactor is from about 3 to about 13 feet.
Claim 22
Dependent Claim
38 words
A method of claim 21 wherein the catalyst particles have a diameter of from about one thirty-second of an inch to about one-fourth of an inch and the length over diameter is from about 1.5 to about 6.
Claim 23
Dependent Claim
38 words
A method of claim 22 wherein the catalyst particles have a diameter of from about one thirty-second of an inch to about one-fourth of an inch anD the length over diameter is from about 1.5 to about 6.
References Cited (Backward Citations)
US2952622A
Cited
US3203891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |