US4048058A
Expired / Lapsed
US
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Methods to be used in reforming processes employing multi-metallic catalysts
Assignee: BP Corp North America Inc
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Filing: 1975-10-09
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Granted: 1977-09-13
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Expires: 1995-10-09
Abstract
Abstract There are disclosed a method for sulfiding a multi-metallic catalyst or a bi-metallic catalyst and a method for initiating the reforming of a petroleum hydrocarbon feedstock in a reforming reaction zone containing a multi-metallic catalyst or a bi-metallic catalyst.
Inventors
- 👤 Richard D. Petersen
- 👤 Rodney L. Mieville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:57
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; A; A61; A61P; A61P43/00; B; B01; B01J; B01J37/00; B01J37/20; C07C; C07C405/00; C07C405/0008; C07C405/0016; C07C51/00; C07C51/347; C07C51/377; C07C51/38; C07D203/00; C07D203/04; C07D203/06; C07D203/16; C07D203/18; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/52; C07D211/56; C07D211/58; C07D213/78; C07D213/81; C07D263/00; C07D263/02; C07D263/04; C07D305/00; C07D305/14; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/68; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C07D319/00; C07D319/04; C07D319/06; C07D407/00; C07D407/02; C07D407/04; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C10; C10G; C10G35/00; C10G35/22
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
114 words
A method for sulfiding a multi-metallic reforming catalyst when employing a hydrogen-rich gas containing light hydrocarbons during said sulfiding, the various metals of said catalyst comprising the total active metal of said catalyst, which method comprises passing a stream of said gas over said catalyst at a temperature of about 350° F. to about 470° F., injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, and contacting said catalyst with said sulfur-carrying gas at said temperature for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal.
Claim 2
Independent Claim
114 words
A method for sulfiding a multi-metallic reforming catalyst when employing a hydrogen-rich gas containing light hydrocarbons during said sulfiding, the various metals of said catalyst comprising the total active metal of said catalyst, which method comprises passing a stream of said gas over said catalyst at a temperature of about 350° F. to about 470° F., injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, and contacting said catalyst with said sulfur-carrying gas at said temperature for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein one of the metals of said catalyst is rhenium.
Claim 5
Dependent Claim
45 words
The method of claim 1 wherein the flow rate of said sulfur-carrying gas is within the range of about 0.25 to about 100 SCF of gas per pound of catalyst and said method is operated at a pressure of about 0 to about 1,000 psig.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 7
Dependent Claim
30 words
The method of claim 4 wherein the flow rate of said sulfur-carrying gas is within the range of about 0.25 to about 1 SCF of gas per pound of catalyst.
Claim 8
Dependent Claim
28 words
The method of claim 4 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 9
Dependent Claim
12 words
The method of claim 7 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 10
Dependent Claim
15 words
The method of claim 7 wherein one of the metals of said catalyst is rhenium.
Claim 11
Dependent Claim
12 words
The method of claim 9 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 12
Independent Claim
139 words
A method for sulfiding a multi-metallic reforming catalyst when employing a hydrogen-rich gas containing light hydrocarbons during said sulfiding, the various metal of said catalyst comprising the total active metal of said catalyst, which method comprises passing a stream of said gas over said catalyst at ambient temperature, increasing the temperature of said catalyst to a value of about 350° F. to about 470° F. while said gas is flowing over said catalyst, injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, and contacting said catalyst with said sulfur-carrying gas at said temperature of about 350° F. to about 470° F. for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal.
Claim 13
Independent Claim
139 words
A method for sulfiding a multi-metallic reforming catalyst when employing a hydrogen-rich gas containing light hydrocarbons during said sulfiding, the various metal of said catalyst comprising the total active metal of said catalyst, which method comprises passing a stream of said gas over said catalyst at ambient temperature, increasing the temperature of said catalyst to a value of about 350° F. to about 470° F. while said gas is flowing over said catalyst, injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, and contacting said catalyst with said sulfur-carrying gas at said temperature of about 350° F. to about 470° F. for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal.
Claim 14
Dependent Claim
45 words
The method of claim 11 wherein the flow rate of said sulfur-carrying gas is within the range of about 0.25 to about 100 SCF of gas per pound of catalyst and said method is operated at a pressure of about 0 to about 1,000 psig.
Claim 15
Dependent Claim
21 words
The method of claim 11 wherein said catalyst comprises a Group VIII noble metal and rhenium on a refractory inorganic oxide.
Claim 16
Dependent Claim
28 words
The method of claim 11 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 17
Dependent Claim
30 words
The method of claim 13 wherein said Group VIII noble metal is platinum, said refractory inorganic oxide is a catalytically active alumina, and said catalyst also contains a combined halogen.
Claim 18
Dependent Claim
45 words
The method of claim 13 wherein the flow rate of said sulfur-carrying gas is within the range of about 0.25 to about 100 SCF of gas per pound of catalyst and said method is operated at a pressure of about 0 to about 1,000 psig.
Claim 19
Dependent Claim
45 words
The method of claim 15 wherein the flow rate of said sulfur-carrying gas is within the range of about 0.25 to about 100 SCF of gas per pound of catalyst and said method is operated at a pressure of about 0 to about 1,000 psig.
Claim 20
Dependent Claim
28 words
The method of claim 16 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 21
Dependent Claim
28 words
The method of claim 17 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 22
Dependent Claim
12 words
The method of claim 18 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 23
Dependent Claim
12 words
The method of claim 19 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 24
Independent Claim
212 words
A method for initiating the reforming of a petroleum hydrocarbon feedstock in a reforming reaction zone containing a bi-metallic catalyst or a multi-metallic catalyst, the various metals of said catalyst comprising the total active metal of said catalyst, which method comprises introducing a stream of hydrogen-rich gas containing light hydrocarbons into said reaction zone at a pressure of about 0 to about 1,000 psig, passing said stream through said reaction zone, adjusting the temperature in said reaction zone to a value of about 350° F. to about 470° F., injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, contacting said catalyst with said said sulfur-carrying gas at said temperature and at a gas flow rate of about 0.25 to about 100 SCF of gas per pound of catalyst for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal, when sufficient sulfiding has occurred, discontinuing the injection of said sulfur-containing compound into said stream, adjusting the temperature, pressure, and hydrogen-rich-gas flow rate in said reaction zone to values that are to be used during the reforming operation, and introducing said feedstock into said reaction zone.
Claim 25
Independent Claim
212 words
A method for initiating the reforming of a petroleum hydrocarbon feedstock in a reforming reaction zone containing a bi-metallic catalyst or a multi-metallic catalyst, the various metals of said catalyst comprising the total active metal of said catalyst, which method comprises introducing a stream of hydrogen-rich gas containing light hydrocarbons into said reaction zone at a pressure of about 0 to about 1,000 psig, passing said stream through said reaction zone, adjusting the temperature in said reaction zone to a value of about 350° F. to about 470° F., injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, contacting said catalyst with said said sulfur-carrying gas at said temperature and at a gas flow rate of about 0.25 to about 100 SCF of gas per pound of catalyst for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal, when sufficient sulfiding has occurred, discontinuing the injection of said sulfur-containing compound into said stream, adjusting the temperature, pressure, and hydrogen-rich-gas flow rate in said reaction zone to values that are to be used during the reforming operation, and introducing said feedstock into said reaction zone.
Claim 26
Dependent Claim
12 words
The method of claim 22 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 27
Dependent Claim
27 words
The method of claim 22 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01to about 10 moles of sulfur per 100 moles of gas.
Claim 28
Dependent Claim
21 words
The method of claim 22 wherein said catalyst comprises a Group VIII noble metal and rhenium of a refactory inorganic oxide.
Claim 29
Dependent Claim
30 words
The method of claim 25 wherein said Group VIII noble metal is platinum, said refractory inorganic oxide is a catalytically active alumina, and said catalyst also contains a combined halogen.
Claim 30
Dependent Claim
28 words
The method of claim 25 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 31
Dependent Claim
28 words
The method of claim 26 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 32
Dependent Claim
12 words
The method of claim 27 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 33
Dependent Claim
12 words
The method of claim 28 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 34
Independent Claim
221 words
A method for initiating the reforming of a petroleum hydrocarbon feedstock in a reforming reaction zone containing a bi-metallic or a multi-metallic catalyst, the various metals of said catalyst comprising the total active metal of said catalyst, which method comprises introducing a stream of hydrogen-rich gas containing light hydrocarbons into said reaction zone at ambient temperature and a pressure of about 0 to about 1,000 psig, passing said stream through said reaction zone, raising the temperature of said reaction zone to a value of about 350° F. to about 470° F., injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, contacting said catalyst with said sulfur-carrying gas at said temperature of about 350° F. to about 470° F. and at a gas flow rate of about 0.25 to about 100 SCF of gas per pound of catalyst for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal, when sufficient sulfiding has occurred, discontinuing the injection of said sulfur-containing compound into said stream, adjusting the temperature, pressure and hydrogen-rich-gas flow rate in said reaction zone to values that are to be used during the reforming operation, and introducing said feedstock into said reaction zone.
Claim 35
Independent Claim
221 words
A method for initiating the reforming of a petroleum hydrocarbon feedstock in a reforming reaction zone containing a bi-metallic or a multi-metallic catalyst, the various metals of said catalyst comprising the total active metal of said catalyst, which method comprises introducing a stream of hydrogen-rich gas containing light hydrocarbons into said reaction zone at ambient temperature and a pressure of about 0 to about 1,000 psig, passing said stream through said reaction zone, raising the temperature of said reaction zone to a value of about 350° F. to about 470° F., injecting a sulfur-containing compound into said stream up-stream from said catalyst in order to provide a sulfur-carrying gas, contacting said catalyst with said sulfur-carrying gas at said temperature of about 350° F. to about 470° F. and at a gas flow rate of about 0.25 to about 100 SCF of gas per pound of catalyst for a time that is sufficient to provide a sulfur concentration on said catalyst of about 0.1 to about 2.5 moles of sulfur per mole of total active metal, when sufficient sulfiding has occurred, discontinuing the injection of said sulfur-containing compound into said stream, adjusting the temperature, pressure and hydrogen-rich-gas flow rate in said reaction zone to values that are to be used during the reforming operation, and introducing said feedstock into said reaction zone.
Claim 36
Dependent Claim
21 words
The method of claim 31 wherein said catalyst comprises a Group VII noble metal and rhenium on a refractory inorganic oxide.
Claim 37
Dependent Claim
28 words
The method of claim 31 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 38
Dependent Claim
12 words
The method of claim 31 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 39
Dependent Claim
30 words
The method of claim 32 wherein said Group VIII noble metal is platinum, said refractory inorganic oxide is a catalytically active alumina, and said catalyst also contains a combined halogen.
Claim 40
Dependent Claim
28 words
The method of claim 32 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 41
Dependent Claim
28 words
The method of claim 35 wherein the concentration of sulfur in said sulfur-carrying gas is about 0.01 to about 10 moles of sulfur per 100 moles of gas.
Claim 42
Dependent Claim
12 words
The method of claim 36 wherein said sulfur-containing compound is dimethyl sulfide.
Claim 43
Dependent Claim
12 words
The method of claim 37 wherein said sulfur-containing compound is dimethyl sulfide.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |