US3607158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the hydrogenation of coal
Assignee: Gas Council
•
Filing: 1969-03-12
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Granted: 1971-09-21
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Expires: 1989-03-12
Abstract
Abstract A process for the hydrogenation of coal to produce a methanecontaining gas is described. Powdered raw coal is introduced into a recycling fluidized bed of noncaking material. The coal is rapidly heated and at least partly hydrogenated, and converted into a noncaking powdered char. The process is generally operated at temperatures of 600* to 1,000* C. and pressures of 10 to 200 atmospheres.
Inventors
- 👤 Frederick James Dent
- 👤 Brian Hoyle Thompson
- 👤 Henry Lawrence Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:13
CPC Classifications
C; C07; C07C; C07C1/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
22 words
A process as claimed in claim 1 wherein the process is carried out at a pressure of from 25 to 100 atmospheres.
Claim 2
Dependent Claim
23 words
A process as claimed in claim 1 wherein the process is carried out at a reaction temperature of from 700* to 900* C.
Claim 3
Dependent Claim
25 words
A process as claimed in claim 1 wherein additional heat is supplied to the fluidized bed by carrying out another exothermic reaction in the bed.
Claim 4
Dependent Claim
38 words
A process as claimed in claim 4 wherein the other exothermic reaction is established in the fluidized bed by introducing into the bed a material selected from the group comprising an oxygen-containing gas and a light petroleum distillate.
Claim 5
Dependent Claim
33 words
A process as claimed in claim 1 wherein the powdered raw coal is continuously fed to the fluidized bed, and the treated noncaking material produced from the powdered material continuously withdrawn from it.
Claim 6
Dependent Claim
31 words
A process as claimed in claim 1 wherein the process is operated such that the powdered raw coaL is only partially hydrogenated, the hydrogenation being subsequently completed in a separate stage.
Claim 7
Dependent Claim
22 words
A process as claimed in claim 1 wherein the powdered raw coal is introduced into the fluidized bed entrained in hydrogenating gas.
Claim 8
Dependent Claim
22 words
A process as claimed in claim 1 wherein the powdered raw coal is preheated prior to being introduced into the fluidized bed.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |