US5089030A
Expired / Lapsed
US
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Apparatus for producing generator gas and activated carbon from solid fuels
Assignee: Individual
•
Filing: 1990-09-26
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Granted: 1992-02-18
•
Expires: 2010-09-26
Abstract
Abstract A process and apparatus for the production of generator gas and activated carbon from solid fuels is proposed, in which, in a first gasification stage, the fuel is fed by forced bottom-charging and preheated air in cocurrent of fuel and air and in which, in the second gasification stage, an intermediate gasification takes place with addition of secondary air and subsequently, in a third gasification stage, the gas is reacted with incandescent coke or charcoal, the heat of the issuing gas being used for heating the air. <??>The fuel entering the first gasification stage in the centre is here passed from the inside outwards and then upwards. A part of the entering fuel is precombusted in a prechamber connected with the preheated air feed, in order to reduce the oxygen content of the preheated air. In the intermediate gasification, the gas with the admixed air is passed through a Venturi nozzle with a diffusor, the fly coal entrained from the first gasification stage being at least partially recycled into the throat of the Venturi nozzle, and the recycle being assisted both by vacuum in the Venturi nozzle and mechanically. <IMAGE>
Inventors
- 👤 Herwig Michel-Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:58
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/72; C10J3/721; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/336; C01B32/39; C10J3/02; C10J3/20; C10J3/34; C10J3/46; C10J3/54; C10J2200/00; C10J2200/15; C10J2200/158; C10J2300/00; C10J2300/16; C10J2300/1603; C10J2300/1609; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
124 words
A reactor apparatus for producing generator gas and activated carbon from solid fuels, the apparatus comprising: means for achieving a first gasification, the first gasification means having means for supplying air, a bottom formed of a turntable, and an underfeed charging means, in communication with the turntable, for rotationally symmetric supplying of fuel into the bottom; means for achieving an intermediate gasification, the intermediate gasification means having a Venturi tube connected to a diffuser, the Venturi tube having a throat connected to and in fluid communication with the first gasification means, and rotary valve means for returning a portion of the fuel to the Venturi tube; and means for achieving a third gasification, the third gasification means in fluid communication with the intermediate means.
Claim 2
Dependent Claim
124 words
A reactor apparatus for producing generator gas and activated carbon from solid fuels, the apparatus comprising: means for achieving a first gasification, the first gasification means having means for supplying air, a bottom formed of a turntable, and an underfeed charging means, in communication with the turntable, for rotationally symmetric supplying of fuel into the bottom; means for achieving an intermediate gasification, the intermediate gasification means having a Venturi tube connected to a diffuser, the Venturi tube having a throat connected to and in fluid communication with the first gasification means, and rotary valve means for returning a portion of the fuel to the Venturi tube; and means for achieving a third gasification, the third gasification means in fluid communication with the intermediate means.
Claim 3
Dependent Claim
39 words
The apparatus according to claim 1, further comprising a first reactor containing the first gasification means and the intermediate gasification means, the intermediate means disposed above the first gasification means, and a second reactor containing the third gasification means.
Claim 4
Dependent Claim
48 words
The apparatus according to claim 1, wherein the first gasification means further comprises a vessel having a lower end and an open top and bottom, a first reactor having walls containing the vessel to define an air gap between the lower end of the vessel and the turntable.
Claim 5
Dependent Claim
52 words
The apparatus according to claim 3, further comprising the air supply means located in the first reactor near the bottom of the vessel, and a precombustion chamber, for burning a small part of the fuel supplied, located between the vessel and the reactor wall, in the vicinity of the air supply means.
Claim 6
Dependent Claim
44 words
The apparatus according to claim 3, further comprising guide blades on the turntable such that the blades pass the fuel first outwards and then upwards in the vessel contained in the first gasification means, the blades directing the fuel as a function of speed.
Claim 7
Dependent Claim
31 words
The apparatus according to claim 1, further comprising a precombustion chamber located in the first gasification means subdivided into sectors with deflector plates, such that the sectors rotate with the turntable.
Claim 8
Dependent Claim
23 words
The apparatus according to claim 1, further comprising a stirrer with stirring blades for feeding and distributing fuel within the first gasification means.
Claim 9
Dependent Claim
38 words
The apparatus according to claim 1, further comprising the first gasification means having a fuel bed and an axially displaceable level rotor arranged in a floating manner on the fuel bed, the rotor mounted in a rotary manner.
Claim 10
Dependent Claim
40 words
The apparatus according to claim 8, further comprising the level rotor having deflector plates with setting angles for producing lift during rotary movements on the fuel bed and the level rotor axially displaceable as a function of a fill level.
Claim 11
Dependent Claim
35 words
The apparatus according to claim 8, further comprising means for regulating discharge of fuel in the form of flue gas from the first gasification means as a function of rotary speed of the level rotor.
Claim 12
Dependent Claim
31 words
The apparatus according to claim 1, further comprising the rotary valve in the intermediate gasification means arranged on the bottom of the intermediate means adjacent the throat of the Venturi tube.
Claim 13
Dependent Claim
38 words
The apparatus according to claim 11, further comprising the rotary valve having rearwardly curved deflector plates to guide fuel inwards in one rotation direction, and to guide fuel outwards to a removal means in an opposite rotation direction.
Claim 14
Dependent Claim
36 words
The apparatus according to claim 1, wherein the intermediate gasification means further comprises a gas outlet, and a centrifugal force separator for separating fuel in the form of flue coal disposed upstream of the gas outlet.
Claim 15
Dependent Claim
37 words
The apparatus according to claim 1, wherein the thrid gasification means further comprises means for gas reaction having a rotary step grate for uniform distribution purposes, and a glowing coke bed resting on the rotary step grate.
Claim 16
Dependent Claim
45 words
The apparatus according to claim 14, wherein the step grate passes into a jacket with a relatively large diameter driven from the outside, and a gas-air heat exchanger in an interior of the jacket for preheating gasification air for delivery to the air supply means.
Claim 17
Dependent Claim
59 words
The apparatus according to claim 15, further comprising an annular channel in an upper region of the jacket for entry of gas from the intermediate gasification means, an outer casing of the annular channel rigidly connected by means of web plates with the step grate, and dogs fitted to the outer casing to distribute coke over the entire reactor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |