CA1093533A - Reactivation of deactivated hydrocarbon conversion catalyst by ultrasonic insonation - Google Patents
Reactivation of deactivated hydrocarbon conversion catalyst by ultrasonic insonationInfo
- Publication number
- CA1093533A CA1093533A CA300,955A CA300955A CA1093533A CA 1093533 A CA1093533 A CA 1093533A CA 300955 A CA300955 A CA 300955A CA 1093533 A CA1093533 A CA 1093533A
- Authority
- CA
- Canada
- Prior art keywords
- catalyst
- liquid medium
- ultrasonic energy
- carbonaceous material
- alumina support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Catalysts (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Catalysts used in hydrocarbon conversion operations are subject to "permanent" deactivation after successive use and regeneration. These permanently deactivated catalysts can be reactivated by immersing them in a liquid medium and subjecting the liquid medium to ultrasonic energy.
This reactivation is especially suitable to catalyst mixtures, compris-ing (1) an amorphous base and/or (2) a crystalline aluminosilicate component and/or (3) a transition metal hydrogenation component, particularly those employed in hydrocracking operations.
Catalysts used in hydrocarbon conversion operations are subject to "permanent" deactivation after successive use and regeneration. These permanently deactivated catalysts can be reactivated by immersing them in a liquid medium and subjecting the liquid medium to ultrasonic energy.
This reactivation is especially suitable to catalyst mixtures, compris-ing (1) an amorphous base and/or (2) a crystalline aluminosilicate component and/or (3) a transition metal hydrogenation component, particularly those employed in hydrocracking operations.
Claims (21)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for reactivating a permanently deactivated hydrocarbon conversion catalyst which com-prises:
(a) oxidizing the catalyst by exposing said catalyst to air at elevated temperatures; and (b) immer-sing said oxidized catalyst resulting from step (a) in a liquid medium which does not react with the catalyst and applying ultrasonic energy thereto.
(a) oxidizing the catalyst by exposing said catalyst to air at elevated temperatures; and (b) immer-sing said oxidized catalyst resulting from step (a) in a liquid medium which does not react with the catalyst and applying ultrasonic energy thereto.
2. A method according to claim 1 in which the ultrasonic energy has a frequency of from about 18 to about 500 kHz.
3. A method according to claim 2 in which the frequency is from about 18 to about 22 kMz.
4. A method according to claim 2 in which the ultrasonic energy has a transducer power output of mini-mally 6 watts per square inch.
5. A method according to claim 4 in which the power output is from about 10 to about 40 watts per square inch.
6. A method according to claim 2 in which the liquid medium is a petroleum oil.
7. A method according to claim 6 in which the petroleum oil is a white oil.
8. A method according to claim 6 in which the petroleum oil is a mineral oil.
9. A method according to claim 2 in which the liquid medium is a solvent for at least a portion of the contaminants deposited on the catalyst.
10. A method according to claim 9 in which the solvent is an organic solvent.
11. A method according to claim 2 in which the catalyst contains a silica/alumina support.
12. A method according to claim 11 in which the catalyst comprises a crystalline aluminosilicate on a silica/alumina support.
13. A method for reactivating a hydrocracking catalyst which has become permanently deactivated by deposits of carbonaceous material and metal oxides thereon, which method comprises the sequential steps of: (a) oxi-dizing said carbonaceous material of said catalyst by exposing the catalyst to air at elevated temperatures;
and (b) immersing the oxidized catalyst from step (a) in a liquid medium which does not react with the catalyst and agitating said medium by ultrasonic energy having a frequency of from about 18 to about 500 kHz.
and (b) immersing the oxidized catalyst from step (a) in a liquid medium which does not react with the catalyst and agitating said medium by ultrasonic energy having a frequency of from about 18 to about 500 kHz.
14. A method according to claim 13 in which the catalyst contains a silica/alumina support.
15. A method according to claim 14 in which the liquid medium is an organic liquid in which a portion of the material deposited on the catalyst is soluble.
16. A method according to claim 14 in which the catalyst is reactivated in the hydrocracking reactor.
17. A method according to claim 13 in which the catalyst comprises a crystalline aluminosilicate on an amorphous silica/alumina support.
18. A method according to claim 17 in which the liquid medium is an organic liquid in which a portion of the material deposited on the catalyst is soluble.
19. A method according to claim 17 in which the catalyst is reactivated in the hydrocracking reactor.
20. In a hydrocracking process in which a petro-leum feedstock is cracked in the presence of a catalyst on an amorphous silica/alumina support and said catalyst is regenerated by calcination, which catalyst is subject to permanent deactivation by deposits of carbonaceous material and metal oxide contaminants which cannot be removed by regeneration, the improvement which comprises reactivating the permanently deactivated catalyst by (a) oxidizing said carbonaceous material of the catalyst by exposing said catalyst to air at elevated temperatures and (b) immers-ing said oxidized catalyst resulting from step (a) in a liquid medium which does not react with the catalyst and agitating said medium by ultrasonic energy having a fre-quency of from about 18 to about 500 kHz.
21. In a hydrocracking process in which a petroleum feedstock is cracked in the presence of a cry-stalline aluminosilicate catalyst on an amorphous silica/
alumina support and said catalyst is regenerated by cal-cination, which catalyst is subject to permanent deacti-vation by deposits of carbonaceous material and metal oxide contaminants which cannot be removed by regenera-tion, the improvement which consists essentially of reac-tivating the permanently deactivated catalyst by (a) oxi-dizing said carbonaceous material of the catalyst by exposing the catalyst to air at elevated temperatures and (b) immersing said oxidized catalyst in a liquid medium which does not react with the catalyst and agitat-ing said medium by ultrasonic energy having a frequency of from about 18 to about 500 kHz.
alumina support and said catalyst is regenerated by cal-cination, which catalyst is subject to permanent deacti-vation by deposits of carbonaceous material and metal oxide contaminants which cannot be removed by regenera-tion, the improvement which consists essentially of reac-tivating the permanently deactivated catalyst by (a) oxi-dizing said carbonaceous material of the catalyst by exposing the catalyst to air at elevated temperatures and (b) immersing said oxidized catalyst in a liquid medium which does not react with the catalyst and agitat-ing said medium by ultrasonic energy having a frequency of from about 18 to about 500 kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA300,955A CA1093533A (en) | 1978-04-12 | 1978-04-12 | Reactivation of deactivated hydrocarbon conversion catalyst by ultrasonic insonation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA300,955A CA1093533A (en) | 1978-04-12 | 1978-04-12 | Reactivation of deactivated hydrocarbon conversion catalyst by ultrasonic insonation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1093533A true CA1093533A (en) | 1981-01-13 |
Family
ID=4111212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA300,955A Expired CA1093533A (en) | 1978-04-12 | 1978-04-12 | Reactivation of deactivated hydrocarbon conversion catalyst by ultrasonic insonation |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1093533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000001483A1 (en) * | 1998-07-06 | 2000-01-13 | Sas Sonderabfallservice Gmbh | Method for regenarating catalysts |
-
1978
- 1978-04-12 CA CA300,955A patent/CA1093533A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000001483A1 (en) * | 1998-07-06 | 2000-01-13 | Sas Sonderabfallservice Gmbh | Method for regenarating catalysts |
| CZ298114B6 (en) * | 1998-07-06 | 2007-06-27 | Envica Gmbh | Method for regenerating catalysts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NZ215933A (en) | Method for reactivating coke clogged catalysts | |
| NO167586C (en) | PROCEDURE FOR THERMAL AND / OR CATALYTIC CRACKING OF HYDROCARBON OUTPUT MATERIALS COOKING OVER 3160C. | |
| JPS5855045A (en) | Reactivation of aromatizing catalyst | |
| CA2340255A1 (en) | On-line synthesis and regeneration of a catalyst used in autothermal oxidation | |
| IT1141091B (en) | PROCESS FOR THE HYDROGENATING TREATMENT OF HEAVY HYDROCARBON OILS, CATALYSTS FOR THE SAME, AND A METHOD FOR PREPARING THESE CATALYSTS | |
| CA1088495A (en) | Catalyst demetallization by oxidation in a defined temperature range | |
| ATE66390T1 (en) | PROCESS FOR THE REGENERATION OF A MONOFUNCTIONAL LARGE POROUS CATALYST HAVING HIGH SELECTIVITY FOR THE DEHYDROCYCLING OF PARAFFINS. | |
| US4163710A (en) | Cracking process employing a combination of reductive and oxidative washes | |
| ATE205873T1 (en) | METHOD AND CATALYST FOR IMPROVEMENT OF HEAVY HYDROCARBONS | |
| DE68906529T2 (en) | METHOD FOR PRODUCING OLEFINS. | |
| CA2026189A1 (en) | Faujasite-type aluminosilicates, a method of producing the same, and hydrocracking catalysts for heavy hydrocarbon oils | |
| GB1508334A (en) | Hydrocarbon conversion process and method of preparing a catalytic composite for use therein | |
| US2850462A (en) | Reactivation of metal-poisoned catalysts | |
| ES484703A1 (en) | Cracking catalyst, process for cracking hydrocarbons and method for passivating contaminating metals on hydrocarbon cracking catalysts. | |
| CA1087591A (en) | Catalyst demetallization with a reductive so.sub.2 wash | |
| CA1093533A (en) | Reactivation of deactivated hydrocarbon conversion catalyst by ultrasonic insonation | |
| CA2022298A1 (en) | Cleanup of contaminated hydrocarbon conversion system to enable use with contaminant-sensitive catalyst | |
| US2397505A (en) | Catalytic cracking and catalyst reactivation | |
| EP0204750A4 (en) | Rejuvenation of a deactivated catalyst. | |
| US4918036A (en) | Cracking catalyst/sulfur oxide gettering agent compositions | |
| DE69001299T2 (en) | Exhaust gas purification catalyst for suppressing hydrogen sulfide formation and process for its production. | |
| US3799887A (en) | Peripheral impregnation of catalyst support material | |
| GB2258826A (en) | Process for the activation of a catalyst | |
| CA1151132A (en) | High pressure oxygen aqueous phase demetallization | |
| US5365009A (en) | Heterogeneous alkylation and regeneration of alkylation catalysts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |