US3997428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporization of oil feed by addition of regenerated catalyst
Assignee: Phillips Petroleum Co
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Filing: 1974-05-06
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Granted: 1976-12-14
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Expires: 1994-05-06
Abstract
Abstract In the catalytic cracking of oil, especially in a riser-type of transport pipe reactor, feedstock in the liquid state is added to the reactor together with sufficient regenerated catalyst to effect essentially complete vaporization of the oil but with minimum cracking. Preferably the regenerated catalyst is cooled to about 900° to 1100° F prior to contact with the oil. The mixture of oil and catalyst is propelled through the riser until the oil is substantially vaporized and then a major portion of hot regenerated catalyst is added to effect the cracking reaction.
Inventors
- 👤 George E. McKenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:41
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
124 words
A hydrocarbon conversion process comprising: combining a first portion of a regenerated silica-containing cracking catalyst at a temperature within the range of about 900° to 1100° F with an oil feed at a temperature of about 50° to 200° F so as to vaporize said oil feed without substantial cracking and bring said feed to a temperature within the range of about 700°-800° F; thereafter adding additional regenerated catalyst at a temperature within the range of about 1050 to 1350° F to increase the temperature of said oil to a level within the range of about 950 to 1100° F where cracking occurs; separating the resulting products from spent catalyst produced thereby; recycling said spent catalyst to a regeneration zone; and recovering said products.
Claim 2
Dependent Claim
124 words
A hydrocarbon conversion process comprising: combining a first portion of a regenerated silica-containing cracking catalyst at a temperature within the range of about 900° to 1100° F with an oil feed at a temperature of about 50° to 200° F so as to vaporize said oil feed without substantial cracking and bring said feed to a temperature within the range of about 700°-800° F; thereafter adding additional regenerated catalyst at a temperature within the range of about 1050 to 1350° F to increase the temperature of said oil to a level within the range of about 950 to 1100° F where cracking occurs; separating the resulting products from spent catalyst produced thereby; recycling said spent catalyst to a regeneration zone; and recovering said products.
Claim 3
Dependent Claim
32 words
A process according to claim 1 wherein said oil feed is an aromatic and wherein there is added in addition a slurry oil along with the major portion of the regenerated catalyst.
Claim 4
Dependent Claim
26 words
A method according to claim 1 wherein the weight ratio of catalyst to oil where said cracking occurs is within the range of 15:1 to 30:1.
Claim 5
Dependent Claim
11 words
A method according to claim 1 wherein said catalyst is silica-alumina.
Claim 6
Dependent Claim
32 words
A method according to claim 1 wherein said products are separated into gas, gasoline, light cycle oil, heavy cycle oil, decant oil, and slurry oil which is recycled to said reaction zone.
Claim 7
Dependent Claim
20 words
A method according to claim 1 wherein said vaporization zone and reaction zones are sequential portions of a vertical pipe.
Claim 8
Dependent Claim
45 words
A method according to claim 1 wherein said regenerated catalyst which is added to said vaporization zone is cooled by an exchanger and the introduction of steam at a temperature within the range of about 950° to 1050°F prior to contact with said oil feed.
Claim 9
Dependent Claim
41 words
A method according to claim 7 comprising in addition introducing another portion of regenerated catalyst and gas oil into a second reaction zone in the form of a vertical riser reactor along with steam to effect conversion of said gas oil.
Claim 10
Dependent Claim
27 words
A method according to claim 8 wherein said oil feed is a relatively high refractory oil and wherein said gas oil is a relatively low refractory oil.
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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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |