WO2011029186A1 - Assembly of wet electrostatic precipitator - Google Patents
Assembly of wet electrostatic precipitator Download PDFInfo
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- WO2011029186A1 WO2011029186A1 PCT/CA2010/001404 CA2010001404W WO2011029186A1 WO 2011029186 A1 WO2011029186 A1 WO 2011029186A1 CA 2010001404 W CA2010001404 W CA 2010001404W WO 2011029186 A1 WO2011029186 A1 WO 2011029186A1
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- WO
- WIPO (PCT)
- Prior art keywords
- strips
- composite material
- corrugated
- conductive
- assembly
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/60—Use of special materials other than liquids
- B03C3/64—Use of special materials other than liquids synthetic resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D3/00—Making articles of cellular structure, e.g. insulating board
- B31D3/005—Making cellular structures from corrugated webs or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B27/04—Layered products comprising a layer of synthetic resin as impregnant, bonding, or embedding substance
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- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/28—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
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- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- B32B2250/00—Layers arrangement
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Abstract
Wet electrostatic precipitator (WESP) collector tube bundles are formed by a procedure in which strips of conductive material are corrugated, intended abutting surfaces of the corrugated strips are abraded, adhesive is applied to the abraded surfaces, multiple ones of the corrugated strips are assembled with corrugation in abutting relationship, and outer panels are assembled with the resulting hexagonal tube bundle.
Description
TITLE OF INVENTION
ASSEMBLY OF WET ELECTROSTATIC PRECIPITATOR
FIELD OF THE INVENTION
[0001] This invention relates to the assembly of a wet electrostatic precipitator (WESP), in particular collector tube bundles therefor.
BACKGROUND TO THE INVENTION
[0002] Wet electrostatic precipitators (WESP) have been used for many years to remove dust, acid mist and other particulates from water-saturated air and other gases by electrostatic means. In a WESP, particulates and/or mist laden water- saturated air flows in a region of the precipitator between discharge and collecting electrodes, where the particulates and/or mist is electrically charged by corona emitted from the high voltage discharge electrodes. As the water-saturated gas flows further within the WESP, the charged particulates matter and/or mist is electrostatically attracted to grounded collecting plates or electrodes where it is collected. The accumulated materials are continuously washed off by both an irrigating film of water and periodic flushing.
[0003] This type of system is used to remove pollutants from gas streams exhausting from various industrial sources, such as incinerators, coke ovens, glass furnaces, non-ferrous metallurgical plants, coal-fired generation plants, forest product facilities, food drying plants and petrochemical plants.
[0004] The electrodes used in WESPs are commonly formed of stainless steel. In International Patent Application Publication No. WO 2008/154,735 and International Patent Application No. PCT/CA2010/000377 assigned to the assignee hereof and the disclosures of which are incorporated herein by reference, we have described the provision of WESP parts constructed of electrically-conductive corrosion and spark-resistant carbon composites. Such materials show comparable or superior properties to stainless steel and permit WESPs to be constructed at lower cost.
SUMMARY OF INVENTION
[0005] We provide herein a procedure for assembly of WESP electrode bundles from conductive carbon composites. The present invention uses a so-called "stacked panel" method of forming hexagonal tubes.
[0006] In such a procedure, conductive carbon composite material is molded into corrugated form, the corrugations of mating surfaces of adjacent panels are abraded to expose carbon fibres, adjacent corrugated strips are adhered at their abutting corrugations to form a hexagonal tube bundle, and the corrugated tube bundle is assembled with outer structural panels.
[0007] The procedure described herein allows for carbon-carbon contact required for conduction. The procedure is flexible, providing the ability to manufacture one stock generic panels for different size tube bundles with low capital and operating costs. The composite material is light weight yet able to withstand sparking and corrosion.
BRIEF DESCRIPTION OF DRAWING
[0008] Figure 1 is a perspective view of a WESP electric bundle product according to one embodiment of the invention;
[0009] Figure 2 is a perspective view of stacked panels according to one embodiment of the invention;
[0010] Figure 3 is a schematic perspective view of the panel molding step;
[0011] Figure 4 is a schematic perspective view of abrasion of the bonding areas of the panel;
[0012] Figure 5 is a schematic perspective view of the application of bonding material to the abraded areas of the panel;
[0013] Figurer 6 is a perspective view of an outer panel with hexagonal corrugation;
[0014] Figure 7 is a perspective view of the outer panel with V corrugation;
[0015] Figure 8 is a perspective view of an inner panel constructed of conductive carbon composite material with hexagonal corrugation; and
[0016] Figures 9 to 15 illustrate the sequence of assembly of the electrode stack.
DESCRIPTION OF PREFERRED EMBODIMENT
[0017] Referring to the drawings, the first step in the assembly procedure is the formation of elongate strips of conductive carbon material which are molded into a corrugated shape (Figs. 2 and 3).
[0018] Any desired molding procedure may be used which enables corrugated strips of carbon composite material to be formed, including vacuum assisted resin transfer molding, as schematically illustrated in Figure 3 and/or resin infusion.
[0019] The conductive composite material utilized herein is a conductive hybrid composite material designed for highly corrosive operating conditions including dry and saturated mist environments with elevated temperatures. The hybrid composite material is a blend of glass and/or carbon fibres and thermosetting resins developed for applications subjected to corona voltage flash over, spark, erosion, corrosion and power arc, including wet electrostatic precipitation. Such resins include thermosetting polyvinyl ester resin.
[0020] In particular, the composite material comprises carbon fiber woven roving and/or carbon fibres within a thermosetting resin where extremely strong molecular building blocks form totally cross-linked structures bonded to each other and at interconnects. Carbon fibres are used as the reinforcing material in areas of the strips required to be conductive while a glass fibre wrap can be used to improve the structural strength of the panel assembly (tube bundle).
[0021] The surface of the formed strips then are abraded at the raised portions of the corrugations to expose the conductive carbon fibres for fibre-fibre contact with adjacent mated panels. This abrasion provides for stronger bonding and
proper electrical conductivity in the bonded areas. Bonding resin then is applied to the abraded mating surface of the corrugated strips (Figs. 4 and 5).
[0022] Another panel then is stacked with the first panel with the corrugations abutting one another to become adhered together (Fig. 2). This procedure is repeated until a stack of hexagonal tubes of the desired size has been prepared.
[0023] The outer panels are the main structural components of the tube bundles and holds the dead and earthquake loads of both the upper equipment and the lower tube bundles.
[0024] The outer panels are broken down into two corrugation forms. One corrugation form is a "Hat" section corrugation having a hexagonal-shaped Ή' corrugation (Fig. 6) and the other is a hex-shaped V corrugation (Fig. 7). These panels, including flanges and stiffening ribs can be constructed of glass-fibre reinforced materials.
[0025] The panels may be assembled into the final tube bundles (Fig. 1) utilizing a stack clamp/jig table. The assembly steps are shown in Figures 9 to 15.
SUMMARY OF THE DISCLOSURE
[0026] In summary of this disclosure, the present invention provides a method of assembly of conductive tube bundles using conductive carbon composite materials. Modifications are possible within the scope of this invention.
Claims
1. A method of forming a hexagonal tube bundle, which comprises:
forming strips of conductive material into corrugated strips,
abrading intended abutting portion of the corrugated strips,
applying adhesive the abraded mating surface(s), and
assembling multiple ones of the corrugated strips with corrugations in abutting relationship until the desired bundle size has been achieved.
2. The method of claim 1, wherein said conductive material is a conductive carbon composite material.
3. The method of claim 3, wherein the conductive carbon composite material is a hybrid composite material comprising a blend of carbon fibreglass and/or carbon fibres and thermosetting resin.
4. The method of claim 1 further comprising assembling outer panels with the hexagonal tube bundles.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CA2773620A CA2773620C (en) | 2009-09-09 | 2010-09-09 | Assembly of wet electrostatic precipitator |
US13/394,828 US9009944B2 (en) | 2009-09-09 | 2010-09-09 | Assembly of wet electrostatic precipitator |
EP20100814843 EP2475519B8 (en) | 2009-09-09 | 2010-09-09 | Assembly of wet electrostatic precipitator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US27230309P | 2009-09-09 | 2009-09-09 | |
US61/272,303 | 2009-09-09 |
Publications (1)
Publication Number | Publication Date |
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WO2011029186A1 true WO2011029186A1 (en) | 2011-03-17 |
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ID=43731888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CA2010/001404 WO2011029186A1 (en) | 2009-09-09 | 2010-09-09 | Assembly of wet electrostatic precipitator |
Country Status (4)
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US (1) | US9009944B2 (en) |
EP (1) | EP2475519B8 (en) |
CA (1) | CA2773620C (en) |
WO (1) | WO2011029186A1 (en) |
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CN104353554A (en) * | 2014-11-13 | 2015-02-18 | 浙江德创环保科技股份有限公司 | Conductive glass steel pole plate device of wet-type plate electrostatic dust collector |
Citations (4)
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US3793802A (en) * | 1971-06-18 | 1974-02-26 | Metallgesellschaft Ag | Grounding system for tubular collectors in electrostatic precipitating apparatus |
GB1413127A (en) * | 1972-12-28 | 1975-11-05 | Holmes Co Ltd W C | Gas cleaning apparatus |
US4155792A (en) * | 1976-09-13 | 1979-05-22 | Metallgesellschaft Aktiengesellschaft | Process for producing a honeycomb of synthetic-resin material for use in an electrostatic precipitator |
US20070283903A1 (en) * | 2004-04-14 | 2007-12-13 | Forschungszentrum Karlsruhe Gmbh | Tubular Collector for Precipitating Electrically Loaded Aerosols from a Gas Stream |
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US1602597A (en) * | 1922-10-27 | 1926-10-12 | Edwin G Staude | Means for abrading carton blanks |
DE2134576C3 (en) | 1971-07-10 | 1975-10-30 | Metallgesellschaft Ag, 6000 Frankfurt | Tube n-Na electrostatic precipitator |
ZA744247B (en) | 1973-08-31 | 1975-06-25 | Metallgesellschaft Ag | Electrostatic precipitator made of plastics material |
US3883328A (en) | 1973-11-29 | 1975-05-13 | Raymond G Spain | Carbon fiber electrodes for electrical precipitators |
FR2486874A1 (en) | 1979-07-19 | 1982-01-22 | United Kingdom Government | IMPROVED HONEYCOMB STRUCTURE AND MANUFACTURING METHOD |
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Also Published As
Publication number | Publication date |
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EP2475519A1 (en) | 2012-07-18 |
CA2773620A1 (en) | 2011-03-17 |
US9009944B2 (en) | 2015-04-21 |
EP2475519A4 (en) | 2014-01-22 |
EP2475519B8 (en) | 2015-04-22 |
US20120222282A1 (en) | 2012-09-06 |
EP2475519B1 (en) | 2015-01-07 |
CA2773620C (en) | 2016-01-12 |
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