US4113446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasification process
Assignee: Massachusetts Institute of Technology
•
Filing: 1976-11-17
•
Granted: 1978-09-12
•
Expires: 1996-11-17
Abstract
Abstract Solid or liquid organic materials are converted to high BTU gas with little or no undesirable char formation by reaction with water at or above the critical temperature of water and at or above the critical pressure of water to achieve the critical density of water. The reaction can be conducted either in the presence or in the absence of a catalyst.
Inventors
- 👤 Michael Modell
- 👤 Robert C. Reid
- 👤 Sanjay I. Amin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:23
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/10; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/323; C02F1/00; C02F1/70; C10; C10J; C10J3/00; C10J3/72; C10J3/78; C10J2300/00; C10J2300/09; C10J2300/0953; C10J2300/0973; C10J2300/0979; C10J2300/0983; Y; Y02; Y02W; Y02W10/00; Y02W10/40
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
The process for forming a gas composition having a high heating value which comprises reacting a liquid or solid organic material with water wherein the water is at least at its critical temperature and wherein the water pressure is at least at its critical pressure such as to achieve the critical density of water and recovering a gas product from the reaction without significant char formation.
Claim 2
Dependent Claim
66 words
The process for forming a gas composition having a high heating value which comprises reacting a liquid or solid organic material with water wherein the water is at least at its critical temperature and wherein the water pressure is at least at its critical pressure such as to achieve the critical density of water and recovering a gas product from the reaction without significant char formation.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the reaction is conducted in the presence of a catalyst which promotes hydrogenation.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein the organic material is coal particles.
Claim 5
Dependent Claim
12 words
The process of claim 2 wherein the organic material is coal particles.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein the organic material comprises a cellulose-containing solid.
Claim 7
Dependent Claim
13 words
The process of claim 2 wherein the organic material comprises a cellulose-containing solid.
Claim 8
Dependent Claim
18 words
The process of claim 1 wherein organic material is reacted with water and product gas is recovered continuously.
Claim 9
Dependent Claim
18 words
The process of claim 2 wherein organic material is reacted with water and product gas is recovered continuously.
Claim 10
Dependent Claim
23 words
The process of claim 1 wherein the reaction is conducted in the presence of a catalyst composition which promotes hydrogenation, reforming and cracking.
Claim 11
Dependent Claim
23 words
The process of claim 3 wherein the reaction is conducted in the presence of a catalyst composition which promotes hydrogenation, reforming and cracking.
References Cited (Backward Citations)
US3148227A
Cited
US3926583A
Cited
US3919114A
Cited
US3715195A
Cited
US3929431A
Cited
US3890113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |