US4784674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mist eliminator module and a method for self-cleaning of the same
Assignee: Alstom Power Inc
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Filing: 1987-08-05
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Granted: 1988-11-15
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Expires: 2007-08-05
Abstract
Abstract A mist eliminator module, comprising a plurality of smooth parallel mist eliminator blades, preferably formed from a fiber reinforced polymeric material is disclosed. Each blade has in a captive edge portion at least one aperture, which is aligned with apertures in adjacent blades. At least one support rod extends through the apertures, with a plurality of resilient tubular spacers fitted onto the rod between the blades. At least one rigid spacer bar, having a plurality of slots in one face for receiving the free blade edge portions is attached to the other blade edges. A water spray may be directed onto the blades to form a film of water on the blades. The blades may be cleaned in place by removing the spacer bar and separating each blade from an adjacent blade, and manually cleaning each side of each blade. The blades may also be cleaned by operating the tower with the water spray running and the support bar removed so that the blades flex sufficiently to flake off any accumulated solids.
Inventors
- 👤 Otto Sarmiento
- 👤 Even Bakke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; B01D45/10
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
92 words
A mist eliminator module for removing liquid components of a gas stream, comprising: a plurality of mist eliminator blades formed from a smooth material, each blade having a captive edge portion and a free edge portion, and each blade being in substantial alignment with adjacent blades; support means for resiliently holding said captive edge portion of said blades in spaced alignment; and detachable spacer means for holding said free edge portion of said blades in spaced alignment; whereby each blades may be readily separated from adjacent blades after detaching said spacer means.
Claim 2
Dependent Claim
92 words
A mist eliminator module for removing liquid components of a gas stream, comprising: a plurality of mist eliminator blades formed from a smooth material, each blade having a captive edge portion and a free edge portion, and each blade being in substantial alignment with adjacent blades; support means for resiliently holding said captive edge portion of said blades in spaced alignment; and detachable spacer means for holding said free edge portion of said blades in spaced alignment; whereby each blades may be readily separated from adjacent blades after detaching said spacer means.
Claim 3
Dependent Claim
55 words
A mist eliminator module in accordance with claim 1 wherein said support means comprises: at least one support rod extending through aligned apertures in the captive edge portions of said blades; a plurality of resilient spacers fitted onto said rod between said blades; and means for holding the said blades and spacers in secured alignment.
Claim 4
Dependent Claim
35 words
A mist eliminator module in accordance with claim 2 wherein each end of said at least one support rod is threaded and wherein said holding means comprises threaded nuts threaded onto said support rod ends.
Claim 5
Dependent Claim
37 words
A mist eliminator module in accordance with claim 1 wherein said spacer means comprises at least one spacer bar having a plurality of slots formed in one edge for receiving said free edge portions of said blades.
Claim 6
Dependent Claim
47 words
A mist eliminator module in accordance with claim 4 wherein said module is oriented relative to said gas stream such that said support rod and said captive edge portions of said blades are located downstream of said spacer bar and said free edge portions of said blades.
Claim 7
Dependent Claim
47 words
A mist eliminator module in accordance with claim 4 wherein said module is oriented relative to said gas stream such that said support rod and said captive edge portions of said blades are located upstream of said spacer bar and said free end portions of said blades.
Claim 8
Dependent Claim
17 words
A mist eliminator module in accordance with claim 2 wherein said resilient spacers comprise an elastomeric material.
Claim 9
Dependent Claim
16 words
A mist eliminator module in accordance with claim 7 wherein said resilient spacers comprise neoprene rubber.
Claim 10
Dependent Claim
18 words
A mist eliminator module in accordance with claim 4 wherein said mist eliminator blades comprise a polymeric material.
Claim 11
Dependent Claim
20 words
A mist eliminator module in accordance with claim 9 wherein said mist eliminator blades comprise a fiber reinforced polyester material.
Claim 12
Dependent Claim
41 words
A mist eliminator module in accordance with claim 1, further comprising at least one water spray nozzle located upstream of said module, whereby a spray of water droplets having a diameter of 200 to 300 microns is directed onto said blades.
Claim 13
Dependent Claim
113 words
A mist eliminator module for removing the liquid components of a gas stream, comprising: a plurality of smooth mist eliminator blades formed from a polymeric material, each blade having a captive edge portion and a free edge portion, and each blade being in substantial alignment with adjacent blades; support means for holding said captive edge portions, said support means having a plurality of resilient spacers separating said blades and being secured thereto; and detachable spacer means for holding said free edge portions in spaced alignment in slots formed in said spacer means for receiving said free edge portions; whereby each blade may be readily separated from adjacent blades after detaching said spacer means.
Claim 14
Dependent Claim
113 words
A mist eliminator module for removing the liquid components of a gas stream, comprising: a plurality of smooth mist eliminator blades formed from a polymeric material, each blade having a captive edge portion and a free edge portion, and each blade being in substantial alignment with adjacent blades; support means for holding said captive edge portions, said support means having a plurality of resilient spacers separating said blades and being secured thereto; and detachable spacer means for holding said free edge portions in spaced alignment in slots formed in said spacer means for receiving said free edge portions; whereby each blade may be readily separated from adjacent blades after detaching said spacer means.
Claim 15
Dependent Claim
60 words
A mist eliminator module in accordance with claim 12 wherein said support means comprises at least one support rod having threaded ends extending through aligned apertures in said captive edge portions of said blades and wherein said resilient spacers are fitted onto said rod between said captive edge portions and wherein threaded nuts are threaded onto said threaded rod ends.
Claim 16
Dependent Claim
17 words
A mist eliminator module in accordance with claim 12 wherein said spacer means comprises a hollow bar.
Claim 17
Dependent Claim
104 words
A mist eliminator module for removing liquid components of a gas stream, comprising: a plurality of parallel mist eliminator blades formed from a fiber reinforced polyester material, each blade having in one edge thereof at least one aperture aligned with apertures in adjacent blades; at least one support rod extending through said aligned apertures, said at least one rod having a plurality of resilient tubular spacers fitted onto said rod between said blades; and at least one spacer bar having a plurality of slots in one face thereof into which are inserted the edges of said blades opposite the said edges having apertures therein.
Claim 18
Dependent Claim
104 words
A mist eliminator module for removing liquid components of a gas stream, comprising: a plurality of parallel mist eliminator blades formed from a fiber reinforced polyester material, each blade having in one edge thereof at least one aperture aligned with apertures in adjacent blades; at least one support rod extending through said aligned apertures, said at least one rod having a plurality of resilient tubular spacers fitted onto said rod between said blades; and at least one spacer bar having a plurality of slots in one face thereof into which are inserted the edges of said blades opposite the said edges having apertures therein.
Claim 19
Dependent Claim
48 words
A mist eliminator module in accordance with claim 15 wherein said module is oriented relative to said gas stream such that said apertures are provided in the upstream edges of said blades, and the downstream edges of said blades are inserted into said slots in said spacer bar.
Claim 20
Dependent Claim
47 words
A mist eliminator module in accordance with claim 15 wherein said module is oriented relative to said gas stream such that apertures are provided in the downstream edges of said blades, and the upstream edges of said blades are inserted into said slots in said spacer bar.
Claim 21
Dependent Claim
26 words
A mist eliminator module in accordance with claim 15, further comprising: means for spraying water on said blades to form a water film on said blades.
Claim 22
Dependent Claim
43 words
A mist eliminator assembly in accordance with claim 18 wherein said water spray means provides a spray of water droplets having a diameter of 200 to 300 microns at a nozzle pressure of 40 psig from an upstream side of said mist eliminator.
Claim 23
Dependent Claim
145 words
A self-cleaning mist eliminator assembly, comprising: a plurality of smooth mist eliminator blades formed from a polymeric material, each blade having a captive edge portion and a free edge portion, and having in said captive edge portion a plurality of apertures aligned with apertures in adjacent blades; at least one support rod extending through said aligned apertures, each said rod having a plurality of elastomeric spacers fitted onto said rod between said blades; at least one rigid spacer bar, each said bar having a plurality of slots formed in one face into which are fitted said free edge portion of said blades, and each said spacer bar being secured to at least one said blade; and a spray nozzle and water supply providing a spray of water droplets having a diameter of 200 to 300 microns directed to form a water film on said blades.
Claim 24
Dependent Claim
145 words
A self-cleaning mist eliminator assembly, comprising: a plurality of smooth mist eliminator blades formed from a polymeric material, each blade having a captive edge portion and a free edge portion, and having in said captive edge portion a plurality of apertures aligned with apertures in adjacent blades; at least one support rod extending through said aligned apertures, each said rod having a plurality of elastomeric spacers fitted onto said rod between said blades; at least one rigid spacer bar, each said bar having a plurality of slots formed in one face into which are fitted said free edge portion of said blades, and each said spacer bar being secured to at least one said blade; and a spray nozzle and water supply providing a spray of water droplets having a diameter of 200 to 300 microns directed to form a water film on said blades.
Claim 25
Independent Claim
147 words
A method of self-cleaning deposited solids from the blades of a mist eliminator module having a plurality of mist eliminator blades formed from a smooth material, said module having support means for resiliently holding captive edge portions of said blades in spaced alignment, and detachable spacer means for holding free edge portions of said blades in alignment, and a spray nozzle and water supply providing a spray of water, wherein said module and spray nozzle are mounted inside a mist eliminator chamber, comprising the steps of: removing said detachable support means from said module; directing a spray of water droplets having a diameter of 200 to 300 microns at a pressure of at least 40 psig on said blades; and flowing air at an effective volume and velocity through said mist eliminator chamber to induce flexing and vibration of said blades sufficient to dislodge said deposited solids.
Claim 26
Independent Claim
147 words
A method of self-cleaning deposited solids from the blades of a mist eliminator module having a plurality of mist eliminator blades formed from a smooth material, said module having support means for resiliently holding captive edge portions of said blades in spaced alignment, and detachable spacer means for holding free edge portions of said blades in alignment, and a spray nozzle and water supply providing a spray of water, wherein said module and spray nozzle are mounted inside a mist eliminator chamber, comprising the steps of: removing said detachable support means from said module; directing a spray of water droplets having a diameter of 200 to 300 microns at a pressure of at least 40 psig on said blades; and flowing air at an effective volume and velocity through said mist eliminator chamber to induce flexing and vibration of said blades sufficient to dislodge said deposited solids.
Claim 27
Independent Claim
192 words
A method of self-cleaning deposited solids from the blades of a mist eliminator module having a plurality of mist eliminator blades formed from a polymeric material, each blade having a plurality of aligned apertures in one captive edge portion thereof, and at least one support rod extending through said apertures, each said rod having a plurality of resilient tubular spacers fitted onto said rod between said blades, and said module having at least one rigid spacer bar having a plurality of slots in one face into which are fitted the free edge portions of said blades, and a spray nozzle and water supply providing a spray of water, wherein said module and spray nozzle are mounted inside a mist eliminator chamber, comprising the steps of: removing said rigid spacer bar from the said free end portions of said blades, directing a spray of water droplets having a diameter of 200 to 300 microns at a pressure of at least 40 psig on said blades; and flowing air at an effective volume and velocity through said mist eliminator chamber to induce flexing and vibration of said blades sufficient to dislodge said deposited solids.
Claim 28
Independent Claim
192 words
A method of self-cleaning deposited solids from the blades of a mist eliminator module having a plurality of mist eliminator blades formed from a polymeric material, each blade having a plurality of aligned apertures in one captive edge portion thereof, and at least one support rod extending through said apertures, each said rod having a plurality of resilient tubular spacers fitted onto said rod between said blades, and said module having at least one rigid spacer bar having a plurality of slots in one face into which are fitted the free edge portions of said blades, and a spray nozzle and water supply providing a spray of water, wherein said module and spray nozzle are mounted inside a mist eliminator chamber, comprising the steps of: removing said rigid spacer bar from the said free end portions of said blades, directing a spray of water droplets having a diameter of 200 to 300 microns at a pressure of at least 40 psig on said blades; and flowing air at an effective volume and velocity through said mist eliminator chamber to induce flexing and vibration of said blades sufficient to dislodge said deposited solids.
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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) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |