US4367160A
Expired / Lapsed
US
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Oxidants for gasifying carbon-containing materials
Assignee: Monsanto Co
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Filing: 1981-10-07
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Granted: 1983-01-04
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Expires: 2001-10-07
Abstract
Abstract This invention relates to the treatment of carbon-containing materials. In one aspect this invention relates to the treatment of carbon-containing materials, such as coal, coke and hydrocarbons to produce oxides of carbon therefrom. In still another aspect, this invention relates to a process for the production of high purity synthesis gas, a mixture of hydrogen and carbon monoxide, from carbon-containing materials. More specifically, this invention relates to inorganic metal-oxygen containing materials useful as the oxidant, oxygen carrier and supplier, and heat transfer agent for the endothermic oxidative gasification of carbon-containing materials.
Inventors
- 👤 Charles W. Rooks
- 👤 George D. Davis
- 👤 James C. Hill
- 👤 Talmage D. McMinn, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:43
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/72; C10J3/725; C01; C01B; C01B3/00; C01B3/02; C01B3/22; C01B3/24; C01B3/28; C10J3/02; C10J3/06; C10J3/12; C10J3/46; C10J3/48; C10J3/482; C10J3/54; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0916; C10J2300/092; C10J2300/093; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0973; C10J2300/0976; C10J2300/0983; C10J2300/0993; C10J2300/0996; C10J2300/16; C10J2300/1603; C10J2300/1606
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
In the process of oxidatively gasifying carbon-containing material wherein a metal oxide-containing material is employed as heat transfer agent and oxygen carrier gas the gasification reaction, the improvement wherein said metal oxide-containing material having a releasable oxygen capacity of at least 0.015 pounds of oxygen per pound of oxidant and an oxygen removal rate of at least 3.125×10 -4 grams-atoms of oxygen per gram of oxidant per minute is selected from the group of (1) natural occurring iron-containing materials having an iron content of from 14 to 30 weight percent selected from bauxites, ilmenite and chromite ores, and (2) synthetic metal oxide-containing materials containing from 14 up to 25 weight percent of the metals selected from the iron and copper.
Claim 2
Dependent Claim
120 words
In the process of oxidatively gasifying carbon-containing material wherein a metal oxide-containing material is employed as heat transfer agent and oxygen carrier gas the gasification reaction, the improvement wherein said metal oxide-containing material having a releasable oxygen capacity of at least 0.015 pounds of oxygen per pound of oxidant and an oxygen removal rate of at least 3.125×10 -4 grams-atoms of oxygen per gram of oxidant per minute is selected from the group of (1) natural occurring iron-containing materials having an iron content of from 14 to 30 weight percent selected from bauxites, ilmenite and chromite ores, and (2) synthetic metal oxide-containing materials containing from 14 up to 25 weight percent of the metals selected from the iron and copper.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the natural occurring iron-containing material is ilmenite.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the natural occurring iron-containing material is an iron-chromite ore.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the synthetic metal oxide-containing material is an iron-containing material.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein the synthetic metal oxide-containing material is a copper-containing material.
Claim 7
Dependent Claim
21 words
The process of claim 1 wherein the synthetic metal oxide-containing material is a mixture of iron oxide and calcium aluminate cement.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein the synthetic metal oxide-containing material is a mixture of copper oxide and calcium aluminate cement.
Claim 9
Dependent Claim
79 words
In the process of oxidatively gasifying carbon-containing material wherein a metal oxide-containing material is employed as heat transfer agent and oxygen carrier for the gasification reaction, the improvement wherein said metal oxide-containing material having a releasable oxygen capacity of at least 0.015 pounds of oxygen per pound of oxidant and an oxygen removal rate of at least 3.125×10 -4 grams-atoms of oxygen per gram of oxidant per minute is a synthetic metal oxide-containing material selected from cerium and uranium.
Claim 10
Dependent Claim
79 words
In the process of oxidatively gasifying carbon-containing material wherein a metal oxide-containing material is employed as heat transfer agent and oxygen carrier for the gasification reaction, the improvement wherein said metal oxide-containing material having a releasable oxygen capacity of at least 0.015 pounds of oxygen per pound of oxidant and an oxygen removal rate of at least 3.125×10 -4 grams-atoms of oxygen per gram of oxidant per minute is a synthetic metal oxide-containing material selected from cerium and uranium.
Claim 11
Dependent Claim
15 words
The process of claim 8 wherein the synthetic metal oxide-containing material is a cerium-containing material.
Claim 12
Dependent Claim
15 words
The process of claim 8 wherein the synthetic metal oxide-containing material is a uranium-containing material.
References Cited (Backward Citations)
US2602809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |