US4500323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the gasification of raw carboniferous materials
Assignee: Kraftwerk Union AG
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Filing: 1982-07-29
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Granted: 1985-02-19
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Expires: 2002-07-29
Abstract
Abstract An increased reaction velocity is achieved when gasifying a raw carboniferous material with H 2 O. The raw material is suspended or emulsified in a liquid aqueous solution of a catalytically active salt, and the amount of the catalytically active salt and the pressure are such that the aqueous solution is maintained in the liquid phase.
Inventors
- 👤 Peter Siegfried
- 👤 Martin Wenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:38
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/57; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C10J3/46; C10J3/48; C10J3/482; C10J3/72; C10J3/78; C10J2200/00; C10J2200/06; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0973; C10J2300/0976; C10J2300/0983; C10J2300/0986
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
235 words
A process for gasification of a liquid or solid carbon-containing material which comprises maintaining a body of water in the liquid phase in a reaction zone, said liquid body of water containing a catalyst consisting of a water-soluble salt catalytically active to accelerate the gasification of the carbon-containing material to carbon monoxide and hydrogen, dissolved ionogenically in the body of water, maintaining the body of water at a reaction temperature for gasification of the carbon-containing material and sufficient pressure to retain the body of water in the liquid phase, the reaction temperature in the reaction zone is below the melting temperature of the catalytically active salt at the pressure prevailing in the reaction zone and the reaction temperature is above the critical temperature of pure H 2 O, introducing the carbon-containing material into the body of water, said body of water being in the liquid phase and having ionogenically dissolved therein the catalytically active salt to accelerate the gasification to convert at least part of the carbon of the carbon-containing material to gaseous products leaving an unconverted residue, releasing the gaseous products together with some water in vapor form from the reaction zone, discharging the residue from the reaction zone, introducing make-up water and catalyst into the body of water, and introducing additional carbon-containing material into the body of water in the liquid phase containing ionogenically dissolved catalyst salt for further conversion into gaseous products.
Claim 2
Dependent Claim
235 words
A process for gasification of a liquid or solid carbon-containing material which comprises maintaining a body of water in the liquid phase in a reaction zone, said liquid body of water containing a catalyst consisting of a water-soluble salt catalytically active to accelerate the gasification of the carbon-containing material to carbon monoxide and hydrogen, dissolved ionogenically in the body of water, maintaining the body of water at a reaction temperature for gasification of the carbon-containing material and sufficient pressure to retain the body of water in the liquid phase, the reaction temperature in the reaction zone is below the melting temperature of the catalytically active salt at the pressure prevailing in the reaction zone and the reaction temperature is above the critical temperature of pure H 2 O, introducing the carbon-containing material into the body of water, said body of water being in the liquid phase and having ionogenically dissolved therein the catalytically active salt to accelerate the gasification to convert at least part of the carbon of the carbon-containing material to gaseous products leaving an unconverted residue, releasing the gaseous products together with some water in vapor form from the reaction zone, discharging the residue from the reaction zone, introducing make-up water and catalyst into the body of water, and introducing additional carbon-containing material into the body of water in the liquid phase containing ionogenically dissolved catalyst salt for further conversion into gaseous products.
Claim 3
Dependent Claim
48 words
A process according to claim 1, wherein the body of water with dissolved catalytically active salt is maintained in the liquid phase at a temperature above the critical temperature of pure water but below the critical temperature of the body of water containing the catalytic salt in solution.
Claim 4
Dependent Claim
34 words
A process according to claim 1, wherein the carbon-containing material is a liquid, and wherein the liquid carbon-containing material is emulsified and thereby suspended in the liquid aqueous solution of the catalytically active salt.
Claim 5
Dependent Claim
14 words
A process according to claim 1, wherein the carbon-containing material is a fossil fuel.
Claim 6
Dependent Claim
12 words
A process according to claim 1, wherein the carbon-containing material is coal.
Claim 7
Dependent Claim
12 words
A process according to claim 1, wherein the carbon-containing material is coke.
Claim 8
Dependent Claim
18 words
A process according to claim 1, wherein the carbon-containing material is crude oil and fractions of the oil.
Claim 9
Dependent Claim
24 words
A process according to claim 1, wherein the pressure in the reaction space is maintained by means of an influx of H 2 O.
Claim 10
Dependent Claim
19 words
A process according to claim 8, wherein the influx of H 2 O is in the form of steam.
Claim 11
Dependent Claim
25 words
A process according to claim 8, wherein the influx of H 2 O is in the form of liquid water containing the catalytically active salt.
Claim 12
Dependent Claim
17 words
A process according to claim 1, wherein a salt mixture is used as the catalytically active salt.
Claim 13
Dependent Claim
49 words
A process according to claim 1, wherein the catalytically active salt is selected from the group consisting of K 2 CO 3 , KOH, KHCO 3 , KCl, NaCl, K 4 P 2 O 7 , KBO 2 , Na 2 B 2 O 7 and CaCl 2 .
Claim 14
Dependent Claim
20 words
A process according to claim 1, wherein the catalytically active salt dissolved in the body of water is potassium carbonate.
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) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |