US3917738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isoparaffin-olefin alkylation utilizing crystalline aluminosilicate catalyst in an adsorption zone
Assignee: Universal Oil Products Co
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Filing: 1974-05-16
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Granted: 1975-11-04
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Expires: 1994-05-16
Abstract
Abstract A process for alkylating an isoparaffin with an olefin using a solid, particulate catalyst capable of adsorbing the olefin. The isoparaffin and the olefin are admixed to form a reactants stream in contact with catalyst particles at the upstream end of an adsorption zone; the reactants stream and catalyst particles are passed cocurrently through the adsorption zone without back mixing, at controlled relative velocities, so that a controlled amount of olefin is adsorbed onto the catalyst and removed from the reactants stream as the catalyst and hydrocarbons are passed cocurrently through the adsorption zone; reactants stream and catalyst particles having olefin adsorbed thereon are withdrawn from the downstream end of the adsorption zone and contacted in an alkylation reaction zone to alkylate the isoparaffin with previously adsorbed olefin; and the alkylation reaction product is recovered from the hydrocarbon effluent from the alkylation zone.
Inventors
- 👤 Ellsworth R Fenske
- 👤 Robert F Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:45
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/08; C07C2529/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
AN ALKYLATION PROCESS WHICH COMPRISES PASSING A MIXTURE OF ISOPARAFFIN, ALEFIN AND CRYSTALLINE ALUMINOSILICATE CATALYST THROUGH AN ADSORPTION ZONE AT ADSORPTION CONDITIONS INCLUDING A TEMPERATURE OF FROM ABOUT 70* TO ABOUT 250*F., A CATALYST RESIDENT TIME OF FROM ABOUT 0.1 TO ABOUT 5 MINUTES AND A HYDROCARBON RESIDENCE TIME OF FROM ABOUT 0.5 TO ABOUT 10 MINUTES, ADSORBING SUBSTANTIALLY ALL OF SAID OLEFIN IN SAID CATALYST DURING THE PASSAGE OF SAID MIXTURE THROUGH SAID ZONE, THEN DISCHARGING THE MIXTURE INTO AN ALKYLATION ZONE AT ALKYLATION CONDITIONS INCLUDING AN ALKYLATION TEMPERATURE OF FROM ABOUT 70* TO ABOUT 250*F., A CATALYST RESIDENCE TIME OF FROM ABOUT 0.25 TO ABOUT 4 HOURS AND A HYDROCARBON RESIDENCE TIME OF AT LEAST ABOUT 1 MINUTE AND THEREIN REACTING THE OLEFIN ADSORBED IN THE CATALYST WITH A PORTION OF SAID ISOPARAFFIN, SEPARATELY WITHDRAWING FROM THE ALKYLATION ZONE AN ALKYLATE-CONTAINING STREAM, A CATALYST-CONTAINING STREAM AND AN UNREACTED ISOPARAFFIN-CONTAINING STREAM, COMMINGLING SAID WITHDRAWN ISOPARAFFIN-CONTAINING STREAM AND SAID CATALYSTCONTAINING STREAM AND SUPPLYING SAID COMMINGLED STREAMS TO SAID ADSORPTION ZONE.
Claim 2
Dependent Claim
170 words
AN ALKYLATION PROCESS WHICH COMPRISES PASSING A MIXTURE OF ISOPARAFFIN, ALEFIN AND CRYSTALLINE ALUMINOSILICATE CATALYST THROUGH AN ADSORPTION ZONE AT ADSORPTION CONDITIONS INCLUDING A TEMPERATURE OF FROM ABOUT 70* TO ABOUT 250*F., A CATALYST RESIDENT TIME OF FROM ABOUT 0.1 TO ABOUT 5 MINUTES AND A HYDROCARBON RESIDENCE TIME OF FROM ABOUT 0.5 TO ABOUT 10 MINUTES, ADSORBING SUBSTANTIALLY ALL OF SAID OLEFIN IN SAID CATALYST DURING THE PASSAGE OF SAID MIXTURE THROUGH SAID ZONE, THEN DISCHARGING THE MIXTURE INTO AN ALKYLATION ZONE AT ALKYLATION CONDITIONS INCLUDING AN ALKYLATION TEMPERATURE OF FROM ABOUT 70* TO ABOUT 250*F., A CATALYST RESIDENCE TIME OF FROM ABOUT 0.25 TO ABOUT 4 HOURS AND A HYDROCARBON RESIDENCE TIME OF AT LEAST ABOUT 1 MINUTE AND THEREIN REACTING THE OLEFIN ADSORBED IN THE CATALYST WITH A PORTION OF SAID ISOPARAFFIN, SEPARATELY WITHDRAWING FROM THE ALKYLATION ZONE AN ALKYLATE-CONTAINING STREAM, A CATALYST-CONTAINING STREAM AND AN UNREACTED ISOPARAFFIN-CONTAINING STREAM, COMMINGLING SAID WITHDRAWN ISOPARAFFIN-CONTAINING STREAM AND SAID CATALYSTCONTAINING STREAM AND SUPPLYING SAID COMMINGLED STREAMS TO SAID ADSORPTION ZONE.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein said isoparaffin is selected from isobutane and isopentane.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein said olefin is a mono-olefin selected from ethylene, propylene, 1-butene, 2-butene, isobutylene, 1-pentene, 2-pentene, 2-methyl-1-butene, 3-methyl-2-butene and 3-methyl-1-butene.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said crystalline aluminosilicate has a faujasite crystal structure.
Claim 6
Dependent Claim
30 words
The process of claim 1 wherein said catalyst includes from about 0.01 wt.% to about 5 wt.% of a metal from Group VIII of the Periodic Table of the Elements.
Claim 7
Dependent Claim
33 words
The process of claim 1 wherein from about 1 volume to about 50 volumes of said isoparaffin is passed into said adsorption zone per volume of said olefin passed into said adsorption zone.
Claim 8
Dependent Claim
44 words
The process of claim 1 wherein at least a portion of said catalyst removed from said alkylation zone is contacted with an oxygen-containing gas in an oxidative regeneration zone at oxidative regeneration conditions, removed from the regeneration zone and passed into said adsorption zone.
Claim 9
Dependent Claim
44 words
The process of claim 5 wherein at least a portion of said catalyst removed from said alkylation zone is contacted with a hydrogen-containing gas in a hydrogenative regeneration zone at hydrogenative regeneration conditions, removed from the regeneration zone and passed into said adsorption zone.
Claim 10
Dependent Claim
22 words
The process of claim 1 wherein catalyst withdrawn from the alkylation zone is regenerated prior to its recycle to the adsorption zone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |