US3833205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for eliminating water vapor from processed air
Assignee: ROSS PULP & PAPER Inc
•
Filing: 1972-02-02
•
Granted: 1974-09-03
•
Expires: 1992-02-02
Abstract
Abstract Apparatus and method for eliminating water vapor from processed exhaust air of a dryer. The exhaust air is placed in indirect heat exchange relationship with ambient air after which it is cooled by passing through a water shower. The cooled exhaust is then mixed with the ambient air which has passed through the heat exchanger and at least a portion of the mixture is discharged to the atmosphere.
Inventors
- 👤 Anespie D Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:02
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/265; Y; Y10; Y10S; Y10S261/00; Y10S261/77
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
172 words
An apparatus for eliminating vapor from vapor laden process exhaust gas having an elevated temperature whereby it may be discharged into the atmosphere without the formation of plume comprising: indirect heat exchange means having first and second passages, means for directing a heated vapor laden gas through said first passage to effect cooling of said gas, separate means for directing ambient air through said second passage to effect heating of said ambient air, said passages being separated by wall means through which heat exchanging between said gas and said ambient air is effected, cooling means comprising a first water spray located within portions of said heat exchange means through which said gas passes, and said spray drains through said first passage and in contact with said wall means to effect further cooling of said gas and yielding up of vapor, means for mixing said gas and said ambient air emerging from said heat exchange means, and means for exhausting at least a portion of the mixed air and gas to the atmosphere.
Claim 2
Independent Claim
172 words
An apparatus for eliminating vapor from vapor laden process exhaust gas having an elevated temperature whereby it may be discharged into the atmosphere without the formation of plume comprising: indirect heat exchange means having first and second passages, means for directing a heated vapor laden gas through said first passage to effect cooling of said gas, separate means for directing ambient air through said second passage to effect heating of said ambient air, said passages being separated by wall means through which heat exchanging between said gas and said ambient air is effected, cooling means comprising a first water spray located within portions of said heat exchange means through which said gas passes, and said spray drains through said first passage and in contact with said wall means to effect further cooling of said gas and yielding up of vapor, means for mixing said gas and said ambient air emerging from said heat exchange means, and means for exhausting at least a portion of the mixed air and gas to the atmosphere.
Claim 3
Dependent Claim
35 words
The apparatus of claim 1 comprising: a second water spray located between the heat exchange means and said means for mixing, and means for passing the water from the second spray to the first-named spray.
Claim 4
Dependent Claim
146 words
In a method of eliminating vapor from a vapor laden process exhaust gas having an elevated temperature whereby it may be discharged into the atmosphere without the formation of plume, the steps comprising: passing a heated vapor laden gas in heat exchanging relation with ambient air through a separating wall to effect cooling of the gas and to effect heating of the ambient air, additionally cooling the gas as it passes through said heat exchange relationship by passing the same through a water spray and draining the water of said spray into countercurrent contact with said gas and contact with said wall while the gas is in heat exchange relation with said ambient air, thereafter mixing the further cooled air with the ambient air after the latter has passed through the heat exchange relationship, and exhausting at least a portion of the mixture to the atmosphere.
Claim 5
Dependent Claim
146 words
In a method of eliminating vapor from a vapor laden process exhaust gas having an elevated temperature whereby it may be discharged into the atmosphere without the formation of plume, the steps comprising: passing a heated vapor laden gas in heat exchanging relation with ambient air through a separating wall to effect cooling of the gas and to effect heating of the ambient air, additionally cooling the gas as it passes through said heat exchange relationship by passing the same through a water spray and draining the water of said spray into countercurrent contact with said gas and contact with said wall while the gas is in heat exchange relation with said ambient air, thereafter mixing the further cooled air with the ambient air after the latter has passed through the heat exchange relationship, and exhausting at least a portion of the mixture to the atmosphere.
Claim 6
Dependent Claim
39 words
A method of claim 3 comprising: subjecting said gas to a second cooling and dehumidification by passage through a second water spray, and passing the water from the second spray through said first spray to increase the water temperature.
References Cited (Backward Citations)
US1966275A
Cited
US1147484A
Cited
US2002019A
Cited
US2084408A
Cited
DE709008C
Cited
US2522086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |