US3226192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating waste gas containing sulfur oxide
Assignee: Mitsubishi Engineering and Shipbuilding Co Ltd
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Filing: 1963-02-25
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Granted: 1965-12-28
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Atsukawa Masumi
- 👤 Matsumoto Kazuhiro
- 👤 Murokawa Hiroyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:42
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/76; C01B17/775; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508; C01B7/00; C01B7/01; C01B7/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS OF TREATING A GAS CONTAINING OXIDES OF SULFUR WITH MANGANESE OXIDE, COMPRISING THE STEPS OF PREPARING AN AQUEOUS SUSPENSION OF MANGANESE OXIDE HAVING ITS CONCENTRATON SUFFICIENT TO MAINTAIN THE FLUIDITY OF THE AQUEOUS SUSPENSION, CONTACTING THE GAS WITH THE AQUEOUS SUSPENSION OF MANGANESE OXIDE TO ABOSORB THE OXIDES OF SULFUR CONTAINED IN THE GAS INTO THE MANGANESE OXIDE TO THEREBY PRODUCE MANGANESE SULFATE, REACTING THE THUS PRODUCED MANGANESE SULFATE IN LIQUID PHASE WITH HYDROGEN CHLORIDE TO CONVERT THE MANGANESE SULFATE TO SULFURIC ACID AND CRYSTALLING MANGANEOUS CHLORIDE, AND OXIDATION DECOMPOSING THE MANGANOUS CHLORIDE WITH A COMBUSTION GAS CONTAINING EXCESS FREE OXYGEN TO PRODUCE CHLORINE AND MANGANESE OXIDE, THE LAST-MENTIONED MANGANESE OXIDE BEING USED TO PREPARE THE AQUEOUS SUSPENSION THEREOF.
Claim 2
Dependent Claim
121 words
A PROCESS OF TREATING A GAS CONTAINING OXIDES OF SULFUR WITH MANGANESE OXIDE, COMPRISING THE STEPS OF PREPARING AN AQUEOUS SUSPENSION OF MANGANESE OXIDE HAVING ITS CONCENTRATON SUFFICIENT TO MAINTAIN THE FLUIDITY OF THE AQUEOUS SUSPENSION, CONTACTING THE GAS WITH THE AQUEOUS SUSPENSION OF MANGANESE OXIDE TO ABOSORB THE OXIDES OF SULFUR CONTAINED IN THE GAS INTO THE MANGANESE OXIDE TO THEREBY PRODUCE MANGANESE SULFATE, REACTING THE THUS PRODUCED MANGANESE SULFATE IN LIQUID PHASE WITH HYDROGEN CHLORIDE TO CONVERT THE MANGANESE SULFATE TO SULFURIC ACID AND CRYSTALLING MANGANEOUS CHLORIDE, AND OXIDATION DECOMPOSING THE MANGANOUS CHLORIDE WITH A COMBUSTION GAS CONTAINING EXCESS FREE OXYGEN TO PRODUCE CHLORINE AND MANGANESE OXIDE, THE LAST-MENTIONED MANGANESE OXIDE BEING USED TO PREPARE THE AQUEOUS SUSPENSION THEREOF.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |