US4418235A
Expired / Lapsed
US
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Hydrocarbon conversion with zeolite having enhanced catalytic activity
Assignee: Mobil Oil AS
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Filing: 1981-12-30
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Granted: 1983-11-29
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Expires: 2001-12-30
Abstract
Abstract A method is provided for increasing the catalytic activity of acid zeolite catalysts characterized by a silica to alumina mole ratio of at least 12 and a constraint index within the approximate range of 1 to 12, comprising contacting said zeolite catalysts with water for a sufficient treating time, temperature and water partial pressure to bring about said increased activity. The increase in catalytic activity is within a zone of enhanced activity, said zone is defined as encompassing all those conditions of treating time, temperature and water partial pressure and combinations thereof which yield catalytic activities greater than initial catalyst activity. The zeolite of enhanced activity of the method of the present invention can be utilized in improved acid catalyzed hydrocarbon conversion processes such as cracking, hydrocracking, alkylation, dealkylation, transalkylation, isomerization, dimerization, oligomerization, polymerization, addition, disproportionation, aromatization and hydration.
Inventors
- 👤 Werner O. Haag
- 👤 Rudolph M. Lago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:29
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/70; B01J29/7034; B01J37/00; B01J37/08; B01J37/10; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/12; C07C2/54; C07C4/00; C07C4/02; C07C4/06; C07C5/00; C07C5/22; C07C5/2206; C07C5/222; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C6/00; C07C6/08; C07C6/12; C07C6/123; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G49/00; C10G49/02; C10G49/08; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/36; B01J2229/42; B01J29/65; B01J29/7046; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/65; C07C2529/70
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
113 words
A process for hydrocarbon compound acid catalyzed conversion which comprises contacting a hydrocarbon compound containing feedstock under hydrocarbon conversion conditions with an acid zeolite having a determinable initial activity and characterized by a silica to alumina ratio of at least 12 and a constraint index of about 1 to about 12, and whose activity has been increased by a method comprising contacting said zeolite with water for a sufficient treating time, temperature and water partial pressure wherein said time, temperature and pressure is represented by the following relationship of treating time and water pressure at constant temperatures: 0.01 (Pt).sub.T <(Pt)<10(Pt).sub.T where (Pt).sub.T =2.6×10.sup.-9 e.sup.16000/T P=Water Partial Pressure, atmosphere t-Treating Time, Hours T=Temperature, °K
Claim 2
Dependent Claim
113 words
A process for hydrocarbon compound acid catalyzed conversion which comprises contacting a hydrocarbon compound containing feedstock under hydrocarbon conversion conditions with an acid zeolite having a determinable initial activity and characterized by a silica to alumina ratio of at least 12 and a constraint index of about 1 to about 12, and whose activity has been increased by a method comprising contacting said zeolite with water for a sufficient treating time, temperature and water partial pressure wherein said time, temperature and pressure is represented by the following relationship of treating time and water pressure at constant temperatures: 0.01 (Pt).sub.T <(Pt)<10(Pt).sub.T where (Pt).sub.T =2.6×10.sup.-9 e.sup.16000/T P=Water Partial Pressure, atmosphere t-Treating Time, Hours T=Temperature, °K
Claim 3
Dependent Claim
23 words
A process according to claim 1 wherein said zeolite is selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35 and ZSM-38.
Claim 4
Dependent Claim
14 words
A process according to claim 1 wherein said zeolite is in the hydrogen form.
Claim 5
Dependent Claim
14 words
A process according to claim 1 wherein said zeolite is in the ammonium form.
Claim 6
Dependent Claim
12 words
A process according to claim 1 wherein said water is liquid water.
Claim 7
Dependent Claim
11 words
A process according to claim 1 wherein said water is steam.
Claim 8
Dependent Claim
12 words
A process according to claim 5 wherein said water is produced in-situ.
Claim 9
Dependent Claim
12 words
A process according to claim 6 wherein said water is produced in-situ.
Claim 10
Dependent Claim
16 words
A process according to claim 7 wherein said water produced in-situ is obtained from alcohol dehydration.
Claim 11
Dependent Claim
16 words
A process according to claim 8 wherein said water produced in-situ is obtained from alcohol dehydration.
Claim 12
Dependent Claim
21 words
A process according to claim 7 wherein said water produced in-situ is obtained from hydrocarbon combustion in the presence of oxygen.
Claim 13
Dependent Claim
21 words
A process according to claim 8 wherein said water produced in-situ is obtained from hydrocarbon combustion in the presence of oxygen.
Claim 14
Dependent Claim
21 words
A process according to claim 7 wherein said water produced in-situ is obtained from coke combustion in the presence of oxygen.
Claim 15
Dependent Claim
21 words
A process according to claim 8 wherein said water produced in-situ is obtained from coke combustion in the presence of oxygen.
Claim 16
Dependent Claim
28 words
A process according to claim 1 wherein ammonia is added to said water in amounts ranging from between about 0.01 to about 10 mole ratio ammonia to water.
Claim 17
Dependent Claim
26 words
A process according to claim 15 wherein said ammonia is added in amounts ranging from between about 1.0 to about 1.0 mole ratio ammonia to water.
Claim 18
Dependent Claim
13 words
A process according to claim 1 wherein a maximum enhanced activity is attained.
Claim 19
Dependent Claim
58 words
A process according to claim 1 wherein treating time, temperature and water partial pressure are selected such that the increased catalytic activity is within a zone of enhanced activity, said zone being defined as encompassing all those conditions of treating time, temperature and water partial pressure and combinations thereof which yield catalytic activities greater than the initial activity.
Claim 20
Dependent Claim
36 words
A process according to claim 1 wherein said zeolite has a crystal size of 0.02 to 0.05 microns and said relationship of treating time and water pressure at constant temperature is as follows: 0.01 (Pt).sub.T <(Pt)<1.0(Pt).sub.T
Claim 21
Dependent Claim
94 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, or 19 wherein said conversion is disproportionation of toluene to benzene and xylenes or disproportionation of methylnaphthalene to naphthalene and dimethylnaphthalenes and said conversion conditions include a temperature of between about 650° F. and about 1100° F., a pressure of between about 0 and about 1000 psig, a WHSV of between about 1 and about 20 hour -1 and a hydrogen to hydrocarbon mole ratio of between about 0 and about 4.
Claim 22
Dependent Claim
86 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 wherein said conversion is isomerization of paraffins, olefins or alkyl aromatics and said conversion conditions include a temperature of between about 450° F. and about 1000° F., a pressure of between about 0 and about 500 psig, a WHSV of between about 0.1 and 200 hr -1 , and a hydrogen to hydrocarbon mole ratio of between about 0.1 and about 100.
Claim 23
Dependent Claim
70 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 wherein said conversion is alkylation of aromatics with paraffins or olefins and said conversion conditions include a temperature of between about 100° F. and 950° F., a pressure of between about 0 and about 1000 psig, and a WHSV of between about 1 and about 500.
Claim 24
Dependent Claim
82 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 wherein said conversion is transalkylation of benzene and methylnaphthalene to form toluene and naphthalene or transalkylation of toluene and trimethylbenzene to form xylenes and said conversion conditions include a temperature of between about 650° F. and 1100° F., a pressure of between about 0 and about 1000 psig and a WHSV of between about 1 and about 20.
Claim 25
Dependent Claim
94 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 wherein said conversion is aromatization of olefins or paraffins conducted in a flow apparatus and said conversion conditions include a temperature of between about 550° F. and about 1200° F., a pressure of between about atmopsheric and about 10,000 psig, a hydrogen/hydrocarbon mole ratio of between about 0 and about 20 and a weight hourly space velocity (WHSV) of between about 0.1 hr -1 and about 10 hr -1 .
Claim 26
Dependent Claim
87 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 wherein said conversion is aromatization of olefins or paraffins conducted in a batch apparatus and said conversion conditions include a temperature of between about 550° and about 1200° F., a pressure of between about atmospheric and about 10,000 psig, a hydrogen/hydrocarbon mole ratio of between about 0 and about 20 and a contact time of between about 0.1 hour and about 48 hours.
Claim 27
Dependent Claim
83 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 wherein said conversion is olefin polymerization conducted in a flow apparatus and said conversion conditions include a temperature of between about 95° F. and 935° F., a pressure of between about atmospheric and 10,000 psig, a WHSV of between about 0.1 and 1000 hr -1 and a hydrogen to hydrocarbon mole ratio of between about 0 and about 20.
Claim 28
Dependent Claim
84 words
The process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 wherein said conversion is olefin polymerization conducted in a batch apparatus and said conversion conditions include a temperature of between about 95° F. and 935° F., a pressure of between about atmospheric and 10,000 psig, a contact time of between about 0.1 and about 48 hours and a hydrogen to hydrocarbon mole ratio of between about 0 and about 20.
Claim 29
Dependent Claim
12 words
The process of claim 21 wherein said conversion is isomerization of xylenes.
Claim 30
Dependent Claim
73 words
The process of claims 2, 3, 4, 9, 10, 11, 12, 13, 14, 16, 17, 18 or 19 wherein said conversion is cracking conducted in a flow apparatus and said conversion conditions include a temperature of between about 700° F. and about 1200° F., a pressure of between about atmospheric and about 200 psig and a weight hourly space velocity (WHSV) of between about 0.5 hr -1 and about 50 hr -1 .
Claim 31
Dependent Claim
67 words
The process of claims 2, 3, 4, 9, 10, 11, 12, 13, 14, 16, 17, 18 or 19 wherein said conversion is cracking conducted in a batch apparatus and said conversion conditions include a temperature of between about 700° F. and about 1200° F., a pressure of between about atmospheric and about 200 psig and a contact time of between about 0.01 hour to about 24 hours.
Claim 32
Dependent Claim
77 words
The process of claims 2, 3, 4, 9, 10, 11, 12, 13, 14, 16, 17, 18 and 19 wherein said conversion is hydrocracking conducted in a flow apparatus and said conversion conditions include a temperature of between about 400° F. and about 1000° F., a pressure of between about 500 psig and 3500 psig, a WHSV of between about 0.1 hr -1 and 10 hr -1 and a hydrogen/hydrocarbon mole ratio of between about 1 and 20.
Claim 33
Dependent Claim
75 words
The process of claim 2, 3, 4, 9, 10, 11, 12, 13, 14, 16, 17, 18 or 19 wherein said conversion is hydrocracking conducted in a batch apparatus and said conversion conditions include a temperature of between about 400° F. and 1000° F., a pressure of between about 500 psig and 3500 psig, a contact time of between about 0.1 hour and 10 hours, and a hydrogen/hydrocarbon mole ratio of between about 1 and 20.
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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |