US4895580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas treating apparatus
Assignee: Taikisha Ltd
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Filing: 1989-02-23
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Granted: 1990-01-23
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Expires: 2009-02-23
Abstract
Abstract A gas treating apparatus for removing solvent from a treatment-object gas. The apparatus has an adsorbing member formed mainly of activated carbon capable of adsorbing the solvent. The adsorbed solvent trapped on the adsorbing member is desorbed therefrom when the member is moved by a conveying device to a desorbing section where a high-temperature recycling air is supplied. When a functional trouble occurs with the apparatus, the adsorbing member currently located adjacent the desorbing section is effectively evacuated from a high-temperature-zero-air-flow condition thereby avoiding an abnormal temperature rise and a successive fire accident apt to occur in the desorbing section vicinity due to an oxidation reaction of the adsorbed solvent. Consequently, the invention provides the apparatus with superior safety.
Inventors
- 👤 Koji Morioka
- 👤 Hiromasa Ogata
- 👤 Susumu Ohmori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/30; B01D2253/34; B01D2253/342; B01D2253/3425; B01D2257/00; B01D2257/70; B01D2257/704; B01D2259/00; B01D2259/40; B01D2259/40007; B01D2259/40009; B01D2259/40083; B01D2259/40088; B01D2259/4009
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
144 words
A gas treating apparatus comprising: an adsorptive member 1 having a material capable of adsorbing a solvent contained in the object gas and capable also of desorbing the adsorbed solvent through a high-temperature recycling air; a conveying device for holding said adsorptive member 1 and conveying the same from an adsorbing section A where the treatment-object gas is introduced to a desorbing section B; a recycling gas supplying device 12, 13 for supplying the high-temperature recycling air for solvent desorption to said adsorptive member 1 currently positioned to said desorbing section B; trouble detecting means for detecting an abnormality in the gas treating apparatus; and safety means for evacuating a portion of said adsorptive member 1 currently located within and adjacent said desorbing section B and having solvent content thereof yet un-desorbed from a high-temperature-zero-air-flow condition based on a detection of said detecting means.
Claim 2
Dependent Claim
144 words
A gas treating apparatus comprising: an adsorptive member 1 having a material capable of adsorbing a solvent contained in the object gas and capable also of desorbing the adsorbed solvent through a high-temperature recycling air; a conveying device for holding said adsorptive member 1 and conveying the same from an adsorbing section A where the treatment-object gas is introduced to a desorbing section B; a recycling gas supplying device 12, 13 for supplying the high-temperature recycling air for solvent desorption to said adsorptive member 1 currently positioned to said desorbing section B; trouble detecting means for detecting an abnormality in the gas treating apparatus; and safety means for evacuating a portion of said adsorptive member 1 currently located within and adjacent said desorbing section B and having solvent content thereof yet un-desorbed from a high-temperature-zero-air-flow condition based on a detection of said detecting means.
Claim 3
Dependent Claim
66 words
A gas treating apparatus as defined in claim 1, wherein said safety means includes; an emergency evacuation device 24 for evacuating said portion of the adsorptive member 1 to said adsorbing section A by activating said conveying device at a speed faster than a normal conveying speed thereof, and/or a second cooling air supply device for supplying a second cooling air to said desorbing section B.
Claim 4
Dependent Claim
35 words
A gas treating apparatus as defined in claim 2, wherein said trouble detecting means includes recycling-air-stop detecting sensors 15 and 16 for detecting abnormal stop of said recycling air supply devices 12 and 13 respectively.
Claim 5
Dependent Claim
37 words
A gas treating apparatus as defined in claim 3, wherein said second cooling air supply device supplies the second cooling air through natural ventilation by a drafting effect of the high-temperature air at said desorbing section B.
Claim 6
Dependent Claim
49 words
A gas treating apparatus as defined in claim 2, wherein said safety means also stops supply of the recycling air based on the detection of said trouble detecting means, and said trouble detecting means includes a conveying-device-stop detecting sensor 17 for detecting an abnormal stop of said conveying device.
Claim 7
Dependent Claim
55 words
A gas treating apparatus as defined in claim 2, wherein said safety means also stops supply of the recycling air based on the detection of said trouble detecting means, and said trouble detecting means includes a temperature detecting sensor 18 for detecting for a temperature of said desorbing section B higher than a predetermined temperature.
Claim 8
Dependent Claim
34 words
A gas treating apparatus as defined in claim 5 or 6, wherein said second cooling air supply device is a fan 13 for forcibly supplying the second cooling air to said desorbing section B.
Claim 9
Dependent Claim
60 words
A gas treating apparatus as defined in claim 5 or 6, wherein said second cooling air supply device includes; a fan 13 for forcibly supplying the second cooling air to said desorbing section B, and a cooling water mist mixing device for mixing cooling water mist into said second cooling air based on the detection of said trouble detecting means.
Claim 10
Dependent Claim
64 words
A gas treating apparatus as defined in claim 2, wherein said conveying device comprises a rotor 2 axially mounting thereon a plurality of said adsorptive members 1 in a radial arrangement, with said desorbing section B being disposed in a predetermined rotational phase of said rotor 2 and with said adsorbing section A being disposed in a predetermined differential rotational phase of the same.
Claim 11
Dependent Claim
39 words
A gas treating apparatus as defined in claim 2, wherein said emergency evacuation device evacuates said portions of the adsorptive member 1 by driving said conveying device in a direction opposite to a normal conveying direction of the same.
Claim 12
Dependent Claim
36 words
A gas treating apparatus as defined in claim 10, wherein said portions of the adsorptive member 1 evacuated by said emergency evacuation device includes a portion located within sealing portions C adjacent said desorbing section B.
Claim 13
Dependent Claim
83 words
A gas treating apparatus as defined in claim 1, wherein said safety means includes; a first cooling air supply device for supplying a first cooling air to said adsorbing section A, an emergency evacuation device 24 for evacuating said portion of the adsorptive member 1 to said adsorbing section A by activating said conveying device at a speed faster than a normal conveying speed thereof, and/or a second cooling air supply device for supplying a second cooling air to said desorbing section B.
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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) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |