US3915670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of gases
Assignee: British Gas PLC
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Filing: 1974-08-19
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Granted: 1975-10-28
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Expires: 1994-08-19
Abstract
Abstract The invention is generally concerned with a process for the production of gaseous products by a chemical reaction, at least one reactant being liquid at normal temperature and pressure, which process comprises conducting the said reaction at a given pressure or a given temperature in the presence of a proportion of at least one of the reactants in the liquid phase, thereby controlling the temperature or the pressure of the reaction. The process is particularly useful for the catalytic gasification of light hydrocarbons with steam with water being present in the liquid phase, to produce a product gas which consists substantially of methane and carbon dioxide.
Inventors
- 👤 John Aldwyn Lacey
- 👤 Thomas Rowland Phillips
- 👤 Robert Leslie Ensell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:38
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/38; B01J23/40; B01J23/46; B01J23/462; B01J23/464; C; C07; C07C; C07C1/00; C07C1/20; B01J2229/00; B01J2229/30; B01J2229/36; B01J37/00; B01J37/02; B01J37/03; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755; C10; C10G; C10G2400/00; C10G2400/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
189 words
A CATALYTIC PROCESS FOR PRODUCING A GAS CONSISTING SUBSTANTIALLY WHOLLY OF METHANE AND CARBON DIOXIDE BY REACTING METHANOL WITH H2O IN THE PRESENCE OF A CATALYST THEREFOR, SAID PROCESS COMPRISING: FORMING AN ADMIXTURE OF SAID METHANOL AND H2O, CONTACTING SAID ADMIXTURE WITH A FIRST BATCH OF SAID CATALYST IN A FIRST REACTION ZONE WHILE MAINTAINING THE TEMPERATURE AND PRESSURE IN SAID FIRST REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT LIQUID WATER IS PRESENT IN SAID FIRST ZONE AND WHILE KEEPING SAID FIRST BATCH OF CATALYST IN CONTACT WITH SAID LIQUID WATER TO THEREBY CONVERT THE ADMIXTURE INTO A WET ZONE EFFLUENT STREAM, CONTACTING SAID WET ZONE EFFLUENT STREAM WITH A SECOND BATCH OF SAID CATALYST IN A SECOND REACTION ZONE WHILE MAINTAINING THE TTEMPERATURE AND PRESSURE IN SAID SECOND REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT ALL OF THE REACTANTS IN SAID SECOND ZONE PRESENT IN THE GASEOUS PHASE WHEREBY SAID SECOND BATCH OF CATALYST IS KEPT IN A DRY CONDITION, THE TEMPERATURE IN SAID FIRST ZONE AND THE TEMPERATURE IN SAID SECOND ZONE EACH BEING MAINTAINED WITHIN THE RANGE OF FROM 250* TO 500*C DURING SAID CONTACTING OPERATIONS,
Claim 2
Dependent Claim
189 words
A CATALYTIC PROCESS FOR PRODUCING A GAS CONSISTING SUBSTANTIALLY WHOLLY OF METHANE AND CARBON DIOXIDE BY REACTING METHANOL WITH H2O IN THE PRESENCE OF A CATALYST THEREFOR, SAID PROCESS COMPRISING: FORMING AN ADMIXTURE OF SAID METHANOL AND H2O, CONTACTING SAID ADMIXTURE WITH A FIRST BATCH OF SAID CATALYST IN A FIRST REACTION ZONE WHILE MAINTAINING THE TEMPERATURE AND PRESSURE IN SAID FIRST REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT LIQUID WATER IS PRESENT IN SAID FIRST ZONE AND WHILE KEEPING SAID FIRST BATCH OF CATALYST IN CONTACT WITH SAID LIQUID WATER TO THEREBY CONVERT THE ADMIXTURE INTO A WET ZONE EFFLUENT STREAM, CONTACTING SAID WET ZONE EFFLUENT STREAM WITH A SECOND BATCH OF SAID CATALYST IN A SECOND REACTION ZONE WHILE MAINTAINING THE TTEMPERATURE AND PRESSURE IN SAID SECOND REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT ALL OF THE REACTANTS IN SAID SECOND ZONE PRESENT IN THE GASEOUS PHASE WHEREBY SAID SECOND BATCH OF CATALYST IS KEPT IN A DRY CONDITION, THE TEMPERATURE IN SAID FIRST ZONE AND THE TEMPERATURE IN SAID SECOND ZONE EACH BEING MAINTAINED WITHIN THE RANGE OF FROM 250* TO 500*C DURING SAID CONTACTING OPERATIONS,
Claim 3
Dependent Claim
38 words
A process as set forth in claim 1 whereiN said catalyst comprises a catalytic metal selected from the group consisting of ruthenium, nickel, cobalt and mixtures thereof, said catalytic metal being characterized by having been precipitated from solution.
Claim 4
Dependent Claim
52 words
A process as claimed in claim 2 wherein said catalyst consists essentially of a co-precipitated nickel and silica material in which the nickel is present in an amount of from 50 to 85% by weight thereof and the silica is present in an amount of from 50 to 15% by weight thereof.
Claim 5
Dependent Claim
52 words
A process as claimed in claim 2 wherein the catalyst consists essentially of a co-precipitated ruthenium and alumina material in which the ruthenium is present in an amount of from 20 to 50% by weight thereof and the alumina is present in an amount of from 80 to 50% by weight thereof.
Claim 6
Dependent Claim
202 words
A CATALYST PROCESS FOR PRODUCING A GAS CONSISTING SUBSTANTIALLY WHOLLY OF METHANE AND CARBON DIOXIDE FROM A FEEDSTOCK COMPRISING A LIGHT PETROLEIUM OIL CAPABLE OF UNDERGOING SUCH GASIFICATION WHEN REACTED WITH H2O IN THE PRESENCE OF A CATALYST THEREFORE, SAID PROCESS COMPRISING: FORMING AN ADMIXTURE OF SAID FEEDSTOCK AND H2O, CONTACTING SAID ADMIXTURE WITH A FIRST BATCH OF SAID CATALYST IN A FIRST REACTION ZONE WHILE MAINTAINING THE TEMPERATURE AND PRESSURE IN SAID FIRST REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT LIQUID WATER IS PRESENT IN SAID FIRST ZONE AND WHILE KEEPING SAID FIRST BATCH OF CATALYST IN CONTACT WITH SAID LIQUID WATER TO THEREBY CONVERT THE ADMIXTURE INTO A WET ZONE EFFLUENT STREAM: CONTACTING SAID WET ZONE EFFLUENT STREAM WITH A SECOND BATCH OF SAID CATALYST IN A SECOND REACTION ZONE WHILE MAINTAINING THE TEMPERATURE AND PRESSURE IN SAID SECOND REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT ALL OF THE REACTANTS IN SAID SECOND ZONE ARE PRESENT IN THE GASEOUS PHASE WHEREBY SAID SECOND BATCH OF CATALYST IS KEPT IN A DRY CONDITION, THE TEMPERATURE IN SAID FIRST ZONE AND THE TEMPERATURE IN SAID SECOND ZONE EACH BEING MAINTAINED WITHIN THE RANGE OF FROM 250* TO 500*C DURING SAID CONTACTING OPERATION.
Claim 7
Dependent Claim
202 words
A CATALYST PROCESS FOR PRODUCING A GAS CONSISTING SUBSTANTIALLY WHOLLY OF METHANE AND CARBON DIOXIDE FROM A FEEDSTOCK COMPRISING A LIGHT PETROLEIUM OIL CAPABLE OF UNDERGOING SUCH GASIFICATION WHEN REACTED WITH H2O IN THE PRESENCE OF A CATALYST THEREFORE, SAID PROCESS COMPRISING: FORMING AN ADMIXTURE OF SAID FEEDSTOCK AND H2O, CONTACTING SAID ADMIXTURE WITH A FIRST BATCH OF SAID CATALYST IN A FIRST REACTION ZONE WHILE MAINTAINING THE TEMPERATURE AND PRESSURE IN SAID FIRST REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT LIQUID WATER IS PRESENT IN SAID FIRST ZONE AND WHILE KEEPING SAID FIRST BATCH OF CATALYST IN CONTACT WITH SAID LIQUID WATER TO THEREBY CONVERT THE ADMIXTURE INTO A WET ZONE EFFLUENT STREAM: CONTACTING SAID WET ZONE EFFLUENT STREAM WITH A SECOND BATCH OF SAID CATALYST IN A SECOND REACTION ZONE WHILE MAINTAINING THE TEMPERATURE AND PRESSURE IN SAID SECOND REACTION ZONE AT RESPECTIVE LEVELS SUCH THAT ALL OF THE REACTANTS IN SAID SECOND ZONE ARE PRESENT IN THE GASEOUS PHASE WHEREBY SAID SECOND BATCH OF CATALYST IS KEPT IN A DRY CONDITION, THE TEMPERATURE IN SAID FIRST ZONE AND THE TEMPERATURE IN SAID SECOND ZONE EACH BEING MAINTAINED WITHIN THE RANGE OF FROM 250* TO 500*C DURING SAID CONTACTING OPERATION.
Claim 8
Dependent Claim
38 words
A process as set forth in claim 5 wherein said catalyst comprises a catalytic metal selected from the group consisting of ruthenium, nickel, cobalt and mixtures thereof, said catalytic metal being characterized by having been precipitated from solution.
Claim 9
Dependent Claim
52 words
A process as set forth in claim 6 wherein said catalyst consists essentially of co-precipitated nickel and silica material in which the nickel is present in an amount of from 50 to 85% by weight thereof and the silica is present in an amount of from 50 to 15% by weight thereof.
Claim 10
Dependent Claim
52 words
A process as claimed in claim 6 wherein the catalyst consists essentially of a co-precipitated ruthenium and alumina material in which the ruthenium is present in an amount of from 20 to 50% by weight thereof and the alumina is present in an amount of from 80 to 50% by weight thereof.
Claim 11
Dependent Claim
28 words
A process as set forth in claim 5 wherein said light petroleum oil is a predominantly aliphatic petroleum distillate having a final boiling point of less than 170*C.
Claim 12
Dependent Claim
26 words
A process as set forth in claim 5 wherein the temperature in said first reaction zone is maintained within the range of from 250* to 350*C.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |