Patent US4796545A successfully refreshed from Google Patents.
US4796545A
Expired / Lapsed
US
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Apparatus for treating combustion exhaust gas
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1988-03-11
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Granted: 1989-01-10
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Expires: 2008-03-11
Abstract
Abstract An apparatus for treating a combustion exhaust gas is here provided which comprises a fire furnace, a denitrating reactor for denitrating the combustion exhaust gas discharged from the fire furnace, a dust collector for collecting solids in the exhaust gas passed through the reactor, and a transport pipe for circulating the solids collected by the dust collector through the fire furnace, the apparatus being characterized in that the transport pipe is provided with an arsenic removal means for removing arsenic from the solids. The arsenic removal means may be a heating device or a washing device. The dust collector may be provided with a means for discarding the solids having a particle diameter of 10 μm or less.
Inventors
- 👤 Katsuo Hashizaki
- 👤 Toshio Koyanagi
- 👤 Atsushi Morii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:26
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/74; B01D53/86; B01D53/8621; B01D53/8625
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
An apparatus for treating a combustion exhaust gas which comprises a fire furnace, a denitrating reactor for denitrating said combustion exhaust gas discharged from said fire furnace, a dust collector for collecting solids in said exhaust gas passed through said reactor, and a transport pipe for circulating said solids collected by said dust collector through said fire furnace, said apparatus being characterized in that said transport pipe is provided with an arsenic removal means for removing arsenic from said solids.
Claim 2
Independent Claim
80 words
An apparatus for treating a combustion exhaust gas which comprises a fire furnace, a denitrating reactor for denitrating said combustion exhaust gas discharged from said fire furnace, a dust collector for collecting solids in said exhaust gas passed through said reactor, and a transport pipe for circulating said solids collected by said dust collector through said fire furnace, said apparatus being characterized in that said transport pipe is provided with an arsenic removal means for removing arsenic from said solids.
Claim 3
Dependent Claim
21 words
An apparatus for treating a combustion exhaust gas according to claim 1 wherein said arsenic removal means is a heating device.
Claim 4
Dependent Claim
21 words
An apparatus for treating a combustion exhaust gas according to claim 1 wherein said arsenic removal means is a washing device.
Claim 5
Independent Claim
85 words
An apparatus for treating a combustion exhaust gas which comprises a fire furnace, a denitrating reactor for denitrating said combustion exhaust gas discharged from said fire furnace, a dust collector for collecting solids in said exhaust gas passed through said reactor, and a transport pipe for circulating said solids collected by said dust collector through said fire furnace, said apparatus being characterized in that said dust collector is provided with a means for discarding said solids having a particle diameter of 10 μm or less.
Claim 6
Independent Claim
85 words
An apparatus for treating a combustion exhaust gas which comprises a fire furnace, a denitrating reactor for denitrating said combustion exhaust gas discharged from said fire furnace, a dust collector for collecting solids in said exhaust gas passed through said reactor, and a transport pipe for circulating said solids collected by said dust collector through said fire furnace, said apparatus being characterized in that said dust collector is provided with a means for discarding said solids having a particle diameter of 10 μm or less.
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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |