US3686832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for eliminating diluted sulphur oxides from combustion exhaust gases
Assignee: KAIHATSU KENKYUSHO IND RES
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Filing: 1969-10-27
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Granted: 1972-08-29
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Expires: 1989-10-27
Abstract
Abstract An apparatus for eliminating sulphur oxides from combustions exhaust gases comprising a plurality of compartments each containing activated carbon and means for washing the latter with water. A pair of inlet ducts, a pair of outlet ducts, and inlet and outlet flow control means associated with each compartment are provided so that the latter can be placed in communication with either of the inlet ducts and either of the outlet ducts, respectively, or isolated from all of the ducts, the inlet ducts branching from a common main duct for leading exhaust gas to the apparatus. One of the outlet ducts communicates with one of the inlet ducts at a position downstream of the branching point of the main duct and the other of the outlet ducts leads gas out of the apparatus.
Inventors
- 👤 Shin Hori
- 👤 Tomiyoshi Inoue
- 👤 Shozo Yamamoto
- 👤 Kazuo Tatara
- 👤 Masahiro Kitagawa
- 👤 Masaru Watanabe
- 👤 Yukihiko Okada
- 👤 Naoki Negishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:33
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508; B01D53/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
41 words
The apparatus, as set forth in claim 1, wherein said plurality of compartments together form an annular chamber, and an activated carbon layer disposed in each of said compartments dividing each of said compartMents into an inlet region and outlet region.
Claim 2
Dependent Claim
40 words
The apparatus, as set forth in claim 2, wherein said inlet flow control means associated with each compartment includes at least two inlet valves, and said outlet flow control means associated with each compartment includes at least two outlet valves.
Claim 3
Dependent Claim
23 words
The apparatus, as set forth in claim 3, further comprising said means for washing constitutes means in said compartments for spraying with water.
Claim 4
Dependent Claim
35 words
The apparatus, as set forth in claim 4, wherein said at least two inlet and outlet valves of one of said compartments are all closed when said washing means washes said one of said compartments.
Claim 5
Dependent Claim
177 words
The apparatus, as set forth in claim 5, wherein one of said at least two inlet valves of at least one other of said plurality of compartments is opened so that said other of said inlet ducts communicates therewith thereby passing said exhaust gas initially into said at least one other of said plurality of compartments, the latter serving as a drying chamber, one of said at least two outlet valves of said at least one other of said plurality of compartments is opened so that the latter communicates with said one of said outlet ducts, one of said at least two inlet valves of at least one another of said plurality of compartments is opened so that said one of said inlet ducts communicates with said at least one another of said plurality of compartments, the latter serving as an adsorbing chamber, and one of said at least two outlet valves of said at least one another of said plurality of compartments is opened so that the latter communicates with said other of said outlet ducts.
Claim 6
Dependent Claim
70 words
The apparatus, as set forth in claim 6, wherein said inlet and outlet flow control means of said plurality of compartments are periodically reset so that each of said plurality of compartments is isolated from said gases and for being washed, sequentially, while the other of said plurality of compartments serves as said drying chamber and said adsorbing chamber, and in that order acting on said gases to be treated.
Claim 7
Dependent Claim
71 words
The apparatus, as set forth in claim 1, wherein each of said pairs of inlet ducts and outlet ducts, respectively, coaxially enter said cylindrical vessel, and the inner coaxial ducts of each of said pair of ducts having innermost portions extending further inwardly in said vessel than the outer coaxial ducts, and said inlet and outlet flow control means associated with the inner coaxial ducts being disposed on said innermost portions.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |