US4207292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for reducing sulfur dioxide
Assignee: Foster Wheeler Energy Corp
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Filing: 1978-08-24
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Granted: 1980-06-10
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Expires: 1998-08-24
Abstract
Abstract A system for reducing sulfur dioxide in which a vessel is provided with an inlet for receiving coal and a plurality of gas distribution nozzles for receiving the sulfur dioxide and discharging same downwardly in the lower portion of the vessel for flowing upwardly in a counterflow relation to the coal. The coal flows through a distribution device located in the hopper section of the vessel for insuring an even distribution of coal through the vessel.
Inventors
- 👤 William F. Bischoff
- 👤 Peter Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:56
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
182 words
A system for reducing sulfur dioxide comprising a vessel, inlet means located in the upper portion of said vessel for receiving coal, means for discharging sulfur dioxide into the lower portion of said vessel in a downward direction so that it rises upwardly in the vessel in a counterflow relation to the coal to oxidize the coal and convert it to ash and to convert the sulfur dioxide to elemental sulfur, said discharging means comprising a plurality of nozzles disposed in said vessel and adapted to discharge said sulfur dioxide downwardly into the lower portion of said vessel, and a flow distribution member disposed in said vessel and having a plurality of through passages formed therethrough, each of said passages being disposed at a predetermined angle relative to the longitudinal axis of said vessel, said coal flowing through said passages to promote a uniform and continuous flow of coal through said vessel, said discharging means further comprising a piping system connected to a source of said sulfur dioxide, extending through bores formed in said flow distribution member and connected to said nozzles.
Claim 2
Independent Claim
182 words
A system for reducing sulfur dioxide comprising a vessel, inlet means located in the upper portion of said vessel for receiving coal, means for discharging sulfur dioxide into the lower portion of said vessel in a downward direction so that it rises upwardly in the vessel in a counterflow relation to the coal to oxidize the coal and convert it to ash and to convert the sulfur dioxide to elemental sulfur, said discharging means comprising a plurality of nozzles disposed in said vessel and adapted to discharge said sulfur dioxide downwardly into the lower portion of said vessel, and a flow distribution member disposed in said vessel and having a plurality of through passages formed therethrough, each of said passages being disposed at a predetermined angle relative to the longitudinal axis of said vessel, said coal flowing through said passages to promote a uniform and continuous flow of coal through said vessel, said discharging means further comprising a piping system connected to a source of said sulfur dioxide, extending through bores formed in said flow distribution member and connected to said nozzles.
Claim 3
Dependent Claim
26 words
The system of claim 1, further comprising outlet means located in the lower portion of said vessel below said flow distribution member for discharging said ash.
Claim 4
Dependent Claim
15 words
The system of claim 1, wherein said passages are angularly spaced about said longitudinal axis.
Claim 5
Dependent Claim
21 words
The system of claim 1, wherein the angle of each of said passages is within the range of 5° to 35°.
Claim 6
Dependent Claim
15 words
The system of claim 1, wherein the angle of each of said passages is 20°.
Claim 7
Dependent Claim
18 words
The system of claim 1, wherein the inlets of said passages are located immediately below said discharge means.
Claim 8
Dependent Claim
16 words
The system of claim 1, wherein said nozzles are spaced radially and longitudinally in said vessel.
Claim 9
Dependent Claim
72 words
The system of claim 1, wherein said piping system includes a central inlet pipe connected to said source of sulfur dioxide and extending vertically through the central portion of said flow distribution member and a plurality of pipes connected to said inlet pipe and extending substantially radially through said flow distribution member, the distal ends of said latter pipes projecting out from said flow distribution member and being connected to said nozzles.
Claim 10
Dependent Claim
28 words
The system of claim 1, wherein the upper portion of said vessel is generally cylindrically shaped and wherein the lower portion of said vessel is generally conically shaped.
Claim 11
Dependent Claim
32 words
The system of claim 7, wherein said flow distribution member has upper and lower truncated portions, with the lower truncated portion engaging and being supported by said lower portion of said vessel.
Claim 12
Dependent Claim
24 words
The system of claim 1, wherein said nozzles are arranged in a plurality of tiers with a plurality of nozzles extending in each tier.
Claim 13
Dependent Claim
17 words
The system of claim 11, wherein the nozzles of each tier extend in an angularly spaced relationship.
Claim 14
Dependent Claim
34 words
The system of claim 11, wherein the nozzles of each tier are radially spaced from the longitudinal axis of said vessel a distance that varies from that of the nozzles in the other tiers.
Claim 15
Independent Claim
186 words
A system for reducing sulfur dioxide comprising a vessel, inlet means located in the upper portion of said vessel for receiving coal, a plurality of nozzles disposed in a radially and longitudinally spaced relation in the lower portion of said vessel for discharging sulfur dioxide in a downward direction so that it rises upwardly in the vessel in a counterflow relation to the coal to oxidize the coal and convert it to ash and to convert the sulfur dioxide to elemental sulfur, and outlet means associated with said vessel for discharging said elemental sulfur, a piping system connected to a source of said sulfur dioxide, extending through bores formed in said flow distribution member and connected to said nozzles, wherein said piping system includes a central inlet pipe connected to said source of sulfur dioxide and extending vertically through the central portion of said flow distribution member and a plurality of pipes connected to said inlet pipe and extending substantially radially through said flow distribution member, the distal ends of said latter pipes projecting out from said flow distribution member and being connected to said nozzles.
Claim 16
Independent Claim
186 words
A system for reducing sulfur dioxide comprising a vessel, inlet means located in the upper portion of said vessel for receiving coal, a plurality of nozzles disposed in a radially and longitudinally spaced relation in the lower portion of said vessel for discharging sulfur dioxide in a downward direction so that it rises upwardly in the vessel in a counterflow relation to the coal to oxidize the coal and convert it to ash and to convert the sulfur dioxide to elemental sulfur, and outlet means associated with said vessel for discharging said elemental sulfur, a piping system connected to a source of said sulfur dioxide, extending through bores formed in said flow distribution member and connected to said nozzles, wherein said piping system includes a central inlet pipe connected to said source of sulfur dioxide and extending vertically through the central portion of said flow distribution member and a plurality of pipes connected to said inlet pipe and extending substantially radially through said flow distribution member, the distal ends of said latter pipes projecting out from said flow distribution member and being connected to said nozzles.
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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) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |