Patent US4095953A successfully refreshed from Google Patents.
US4095953A
Expired / Lapsed
US
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Modular system for reducing sulfur dioxide
Assignee: Foster Wheeler Energy Corp
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Filing: 1977-04-11
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Granted: 1978-06-20
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Expires: 1997-04-11
Abstract
Abstract A system for reducing sulfur dioxide to elemental sulfur in which a reactor vessel is divided into a plurality of compartments, and coal is fed from a single source into each of the compartments. A sulfur dioxide rich gas is distributed to each of the compartments and is contacted with the coal to form substantially pure sulfur.
Inventors
- 👤 Carl Gutterman
- 👤 Peter Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:14
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0473; C01B17/0482; B; B01; B01J; B01J8/00; B01J8/08; B01J8/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
207 words
A system for reducing sulfur dioxide comprising a reactor vessel divided into a plurality of modular reactor vessel sections, each section including a lower hopper portion and an upper portion having at least one wall connecting with a wall of said hopper portion, said sections being connected in an abutting relation so that said walls together define an upper boundary wall of the reactor vessel, partition means disposed within said upper boundary wall for dividing the upper portion of said vessel into a plurality of compartments respectively communicating with said hopper portions, a coal inlet located in the upper portion of each compartment, a single coal supply means for continuously supplying coal to each compartment through the respective coal inlets so that the coal will pass downwardly by gravity through said compartments and their corresponding hopper portions, a gas inlet located in each hopper portion, gas supply means for continuously supplying gas to each hopper portion through the respective gas inlets so that the gas will pass upwardly through said hopper portions and their corresponding compartments and contact said coal in a counterflow relation, gas discharge means located in the upper portion of each compartment, and coal discharge means located in the lower portion of each hopper.
Claim 2
Independent Claim
207 words
A system for reducing sulfur dioxide comprising a reactor vessel divided into a plurality of modular reactor vessel sections, each section including a lower hopper portion and an upper portion having at least one wall connecting with a wall of said hopper portion, said sections being connected in an abutting relation so that said walls together define an upper boundary wall of the reactor vessel, partition means disposed within said upper boundary wall for dividing the upper portion of said vessel into a plurality of compartments respectively communicating with said hopper portions, a coal inlet located in the upper portion of each compartment, a single coal supply means for continuously supplying coal to each compartment through the respective coal inlets so that the coal will pass downwardly by gravity through said compartments and their corresponding hopper portions, a gas inlet located in each hopper portion, gas supply means for continuously supplying gas to each hopper portion through the respective gas inlets so that the gas will pass upwardly through said hopper portions and their corresponding compartments and contact said coal in a counterflow relation, gas discharge means located in the upper portion of each compartment, and coal discharge means located in the lower portion of each hopper.
Claim 3
Dependent Claim
26 words
The system of claim 1, wherein the upper portion of at least one of said vessel sections is formed by two walls joining at a corner.
Claim 4
Dependent Claim
25 words
The system of claim 1, where there are four vessel sections, the upper portion of each being formed by two walls joining at a corner.
Claim 5
Dependent Claim
44 words
The system of claim 1, wherein there are at least six vessel sections, the upper portions of four of which being formed by two walls joining at a corner and the upper portions of at least two of which being formed by one wall.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |