US5701762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recovering high-boiling point solvents
Assignee: Toho Chemical Engineering and Construction Co Ltd
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Filing: 1996-12-20
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Granted: 1997-12-30
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Expires: 2016-12-20
Abstract
Abstract Apparatus for recovering high-boiling point solvents which comprises: a honeycomb-structured rotor 1 having an adsorbent supported thereon; a separator 3 for partitioning the neighborhood of each end face of the rotor into two regions, adsorption zone 5 and desorption zone 4; fan means F 1 that supplies the adsorption zone 5 with air containing a solvent boiling at 150° to 300° C. and which causes part of the clean gas effluent a from the opposite end face of the rotor to be released into the air atmosphere while the remainder is supplied into the desorption zone 4; heating means H for heating the clean gas; cooling means C for separating a solvent enriched gas S into a liquefied product L to be recovered and a cooled lean gas V; and return means F 2 for turning the cooled lean gas V back to the feed gas.
Inventors
- 👤 Mikio Akamatsu
- 👤 Kenji Seki
- 👤 Katsuhiro Yamashita
- 👤 Takeya Kobayashi
- 👤 Takashi Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:32
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D2253/00; B01D2253/30; B01D2253/34; B01D2253/342; B01D2253/3425
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
220 words
An apparatus for recovering a high-boiling point solvent comprising: a rotor comprising, a honeycomb structure having an adsorbent supported thereon, a rotational axis, tubular air passageways extending therethrough parallel to the rotational axis and first and second end faces; drive means for driving the rotor; a separator comprising radially arranged plate members provided in a face-to-face relationship with the first and second end faces of the rotor for partitioning the neighborhood of each of the rotor end faces into a adsorption zone and a desorption zone; fan means for supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to the first end face of the absorption zone, for releasing a part of a clean gas effluent from the second end face of the rotor to an air atmosphere, and for supplying a remainder of the clean gas is supplied into the desorption zone subsequent to the adsorption zone in the direction of the rotation of the rotor; heating means installed behind the fan means for heating the remainder of the clean gas; cooling means for separating the solvent enriched gas effluent from the desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and return means for mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 2
Independent Claim
220 words
An apparatus for recovering a high-boiling point solvent comprising: a rotor comprising, a honeycomb structure having an adsorbent supported thereon, a rotational axis, tubular air passageways extending therethrough parallel to the rotational axis and first and second end faces; drive means for driving the rotor; a separator comprising radially arranged plate members provided in a face-to-face relationship with the first and second end faces of the rotor for partitioning the neighborhood of each of the rotor end faces into a adsorption zone and a desorption zone; fan means for supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to the first end face of the absorption zone, for releasing a part of a clean gas effluent from the second end face of the rotor to an air atmosphere, and for supplying a remainder of the clean gas is supplied into the desorption zone subsequent to the adsorption zone in the direction of the rotation of the rotor; heating means installed behind the fan means for heating the remainder of the clean gas; cooling means for separating the solvent enriched gas effluent from the desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and return means for mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 3
Dependent Claim
28 words
The apparatus for recovering a high-boiling point solvent according to claim 1, further comprising: means for cooling the high-boiling point solvent to be supplied to the absorption zone.
Claim 4
Independent Claim
223 words
An apparatus for recovering a high-boiling point solvent comprising: a rotor comprising, a honeycomb structure having an adsorbent supported thereon, a rotational axis, tubular air passageways extending therethrough parallel to the rotational axis and first and second end faces; drive means for driving the rotor; a separator comprising radially arranged plate members provided in a face-to-face relationship with the first and second end faces of the rotor for partitioning the neighborhood of each of the rotor end faces into a adsorption zone, a desorption zone and a purge zone; fan means for supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to the first end face of the absorption zone, for releasing a part of a clean gas effluent from the second end face of the rotor to an air atmosphere, and for supplying a remainder of the clean gas is supplied into the purge zone subsequent to the adsorption zone in the direction of the rotation of the rotor; heating means for heating the remainder of the clean gas fed from the purge zone; cooling means for separating the solvent enriched gas effluent from the desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and return means for mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 5
Independent Claim
223 words
An apparatus for recovering a high-boiling point solvent comprising: a rotor comprising, a honeycomb structure having an adsorbent supported thereon, a rotational axis, tubular air passageways extending therethrough parallel to the rotational axis and first and second end faces; drive means for driving the rotor; a separator comprising radially arranged plate members provided in a face-to-face relationship with the first and second end faces of the rotor for partitioning the neighborhood of each of the rotor end faces into a adsorption zone, a desorption zone and a purge zone; fan means for supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to the first end face of the absorption zone, for releasing a part of a clean gas effluent from the second end face of the rotor to an air atmosphere, and for supplying a remainder of the clean gas is supplied into the purge zone subsequent to the adsorption zone in the direction of the rotation of the rotor; heating means for heating the remainder of the clean gas fed from the purge zone; cooling means for separating the solvent enriched gas effluent from the desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and return means for mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 6
Dependent Claim
28 words
The apparatus for recovering a high-boiling point solvent according to claim 3, further comprising: means for cooling the high-boiling point solvent to be supplied to the absorption zone.
Claim 7
Independent Claim
129 words
A method for recovering a high-boiling point solvent comprising the steps of: supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to a first end face of a Absorption zone of a rotor; releasing a part of a clean gas effluent from a second end face of the rotor to an air atmosphere; supplying a remainder of the clean gas is supplied into a desorption zone subsequent to a adsorption zone in a direction of a rotation of the rotor; heating the remainder of the clean gas; separating the solvent enriched gas effluent from the desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 8
Independent Claim
129 words
A method for recovering a high-boiling point solvent comprising the steps of: supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to a first end face of a Absorption zone of a rotor; releasing a part of a clean gas effluent from a second end face of the rotor to an air atmosphere; supplying a remainder of the clean gas is supplied into a desorption zone subsequent to a adsorption zone in a direction of a rotation of the rotor; heating the remainder of the clean gas; separating the solvent enriched gas effluent from the desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 9
Dependent Claim
29 words
The method for recovering a high-boiling point solvent according to claim 5, further comprising the step of: cooling the high-boiling point solvent to be supplied to the absorption zone.
Claim 10
Independent Claim
137 words
A method for recovering a high-boiling point solvent comprising the steps of: supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to a first end face of an absorption zone of a rotor; releasing a part of a clean gas effluent from a second end face of the rotor to an air atmosphere; supplying a remainder of the clean gas is supplied into a purge zone of the rotor subsequent to the adsorption zone in a direction of the rotation of the rotor; heating the remainder of the clean gas fed from the purge zone; separating the solvent enriched gas effluent from a desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 11
Independent Claim
137 words
A method for recovering a high-boiling point solvent comprising the steps of: supplying air containing a high-boiling point solvent boiling at 150° to 300° C. to a first end face of an absorption zone of a rotor; releasing a part of a clean gas effluent from a second end face of the rotor to an air atmosphere; supplying a remainder of the clean gas is supplied into a purge zone of the rotor subsequent to the adsorption zone in a direction of the rotation of the rotor; heating the remainder of the clean gas fed from the purge zone; separating the solvent enriched gas effluent from a desorption zone of the rotor into a liquefied product to be recovered and a cooled lean gas; and mixing the cooled lean gas with the high-boiling point solvent containing air.
Claim 12
Dependent Claim
29 words
The method for recovering a high-boiling point solvent according to claim 7, further comprising the step of: cooling the high-boiling point solvent to be supplied to the absorption zone.
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) | 2000-12-29 | 2001-06-30 | 2001-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-29 | 2005-06-30 | 2005-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-29 | 2009-06-30 | 2009-12-30 | $7700.00 | Window Closed / Lapsed |