CN102168503B - Anticorrosion structure for intersection joint of steel flue and chimney of brick lining chimney and anticorrosion treatment method - Google Patents
Anticorrosion structure for intersection joint of steel flue and chimney of brick lining chimney and anticorrosion treatment method Download PDFInfo
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- CN102168503B CN102168503B CN 201010561238 CN201010561238A CN102168503B CN 102168503 B CN102168503 B CN 102168503B CN 201010561238 CN201010561238 CN 201010561238 CN 201010561238 A CN201010561238 A CN 201010561238A CN 102168503 B CN102168503 B CN 102168503B
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Abstract
The invention discloses an anticorrosion structure for an intersection joint of a steel flue and a chimney of a brick lining chimney and an anticorrosion treatment method. The anticorrosion treatment is carried out by using a special anticorrosion structure and a polyfluoro organic lining anticorrosion material to solve problems that the damage is quite easily caused to an anticorrosion layer to result in invalid anticorrosion and leakage of a condensed fluid because comprehensive effects of stresses generated by expansions and retractions in both the horizontal direction and the vertical direction exist on the part and thermal expansion coefficients of a steel structure and a concrete have a greater difference.
Description
Technical field
The present invention relates to the preservative treatment technology of the brick lining chimney of industries uses such as steam power station, chemical industry and metallurgy.
Background technology
For the brick lining chimney that industries such as steam power station, chemical industry and metallurgy are used, preservative treatment is an important engineering.And in the internal construction of chimney, special preservative treatment need be carried out in some special positions.Steel flue gas duct and chimney handing-over seam 21 are positioned at the entrance 21 of breeching and chimney handing-over, and as shown in Figure 1, the handing-over seam is built at this position, and main effect is that reservation is flexible, and eliminating expands with heat and contract with cold influences chimney structure.22 is the chimney outer wall among the figure, and 23 is the chimney isolation layer, and 24 is proof chimney lining brick made.Because unclear to the practical structures situation understanding at this position, therefore the processing to this position does not obtain enough attention, presses the anticorrosion same processing mode of flue or inner wall of stack usually at present.Because the comprehensive function that this position exists horizontal direction and vertical direction to expand and shrink the stress that produces, the result causes anticorrosive coat to destroy anticorrosion inefficacy, condensate liquid seepage.Therefore, the common problem that the seepage phenomenon is at present domestic and international chimney anticorrosion appears in chimney and flue junction.
Summary of the invention
The objective of the invention is to problem to the prior art existence; A kind of steel flue gas duct of brick lining chimney and the method for anticorrosion treatment of chimney handing-over seam are proposed; Adopt special anticorrosion structure and gather fluoropolymer organic lining anticorrosive material and carry out preservative treatment; Thereby overcome since comprehensive function and steel work and the thermal expansion coefficient of concrete existence that there is the expansion of horizontal direction and vertical direction both direction simultaneously in this position and shrinks the stress that produces than big-difference; Very easily anticorrosive coat is produced and destroy, thereby cause anticorrosion inefficacy, the condensate liquid leakage problems.
Technical scheme of the present invention is following:
The anticorrosion structure of a kind of steel flue gas duct of brick lining chimney and chimney handing-over seam; It is characterized in that; Said anticorrosion structure is by on the platform of chimney one side 250-300mm a wide 30-50mm to be arranged at steel flue gas duct and chimney handing-over seam, the groove of dark 50-100mm, and the length of groove is wide identical with flue; In the handing-over seam, irritate silicone rubber kinds high temperature elastic bonding encapsulant is arranged; In the groove of handing-over seam one side, also fill silicone rubber kinds high temperature elastic bonding encapsulant; And scrape by the zone between the groove on handing-over seam one end to the platform at steel flue gas duct and to scribble silicone rubber kinds high temperature elastic bonding encapsulant; Other has a L shaped steel plate; Said L shaped steel plate left-hand thread is being scraped the zone that scribbles silicone rubber kinds high temperature elastic bonding encapsulant, and an end of steel plate buckles in said groove, the other end and steel flue gas duct welding; On said steel plate, be coated with gathering fluoropolymer organic lining anticorrosive material and the compounded glass fiber reinforced plastic of glass cloth; On said glass fiber reinforced plastic, be coated with the acid that adopts silicone rubber kinds high temperature elastic bonding encapsulant lining to paste, scribble in said acid surface brush and gather fluoropolymer organic lining anticorrosive material.
The method for anticorrosion treatment of a kind of steel flue gas duct of brick lining chimney and chimney handing-over seam, its step is following:
1. remove steel flue gas duct and chimney and hand over the former anticorrosive coat of seam crossing, draw the handing-over seam of steel flue gas duct and chimney clearly to substrate;
2. depend on wide 30-50mm of cutter on the platform of chimney one side 250-300mm at the handing-over seam, the groove of dark 50-60mm, elongated along the flue width, and make a L shaped steel plate (steel plate thickness 6mm, width 500mm turns over 400-600mm on the sidewall);
3. in the handing-over seam, fill silicone rubber kinds high temperature elastic bonding encapsulant;
4. in cell body, fill silicone rubber kinds high temperature elastic bonding encapsulant; And at steel flue gas duct by the regional blade coating silicone rubber kinds high temperature elastic bonding encapsulant (thickness is 5mm) between the groove on handing-over seam one end to the platform; Then with L shaped steel plate left-hand thread; One end of L shaped steel plate is buckled in the groove, the other end and steel flue gas duct welding;
5. on steel plate with gathering the compound glass fiber reinforced plastic of processing of fluoropolymer organic lining anticorrosive material VP3-2 and glass cloth; On glass fiber reinforced plastic, adopt silicone rubber kinds high temperature elastic bonding encapsulant lining to paste acid again; Gather fluoropolymer organic lining anticorrosive material VP3-2 in the acid surface brush at last, thickness 0.5mm;
6. maintenance: room temperature: 1-3 days, or heat: after 50-80 ℃ of maintenance 3-8 hour, again at 100-150 ℃ of maintenance 12-48 hour.
Wherein, silicone rubber kinds high temperature elastic bonding encapsulant available silicon rubber, silicone adhesive or polyurethane adhesive etc., or same type of material replaces.
Gather fluoropolymer organic lining anticorrosive material and adopt the fluoropolymer organic lining anticorrosive material of announcing among the Chinese invention patent document CN101891993A " chimney, flue and other pipeline and container gather fluoropolymer organic lining anticorrosive material and processing method " that gathers; This material is made up of A and two kinds of components of B; The A component is to be raw material by fluorine-containing rubber earlier; Add stabilizing agent and reinforcing filler again and carry out mixingly, form elastomeric compound, make solvent with ketone, ester class or alcohols then; Putty type rubber cement is processed in dissolving, adds filler therein again and auxiliary agent is processed; The B component is additive and organic solvent; After A, B component mix, be coated with and be contained in by preserver surface, sulfuration at room temperature forms anticorrosive coat, reaches anticorrosion purpose.The product code name that the applicant gives is VP3-2.
Adopt above-mentioned processing method; Owing to exist the material at flexible position all to adopt elastomeric material, and pull apart the elongation per unit length index, can eliminate well because the level that the fluctuation of cigarette temperature produces and the thermal stress of vertical direction all more than 40%; Can not cause anticorrosive coat to destroy, stop condensate liquid seepage phenomenon.This method is practical application on a plurality of chimney anticorrosion projects, and effect is obvious.
Description of drawings
Fig. 1 is the overall structure sectional drawing of chimney.
The steel flue gas duct that Fig. 2 is a chimney after anticorrosion and the cross-sectional view of chimney handing-over seam.
The specific embodiment
Process below in conjunction with this method for anticorrosion treatment of Fig. 2 further explain:
1. remove steel flue gas duct 8 and hand over the former anticorrosive coat of seam crossing to substrate, draw the handing-over seam between steel flue gas duct 8 and the chimney 5 clearly with chimney;
2. depend on wide 50mm of cutter on the platform of chimney 5 one side 250mm at the handing-over seam, the groove 7 of dark 50mm, elongated along the flue width, and make a L shaped steel plate 9, and steel plate thickness 6mm, width 500mm turns over 600mm on the sidewall, and steel plate is processed behind in-site measurement;
3. in the handing-over seam, fill silicone rubber kinds high temperature elastic bonding encapsulant 3;
4. at will the overlay area whole blade coating rubber-like high temperature elastic bonding encapsulant (thickness is 5mm) of L shaped steel plate 9; And after in groove 7, filling rubber-like high temperature elastic bonding encapsulant; Steel plate 9 is installed; Make the steel plate left-hand thread, the steel plate other end and steel stack 8 welding, the other end buckles in the groove of before having dug out 7;
5. make on the steel plate 9 gather the compound glass fiber reinforced plastic 4 (adopting 2 cloth, 3 oil) of fluoropolymer organic lining anticorrosive material VP3-2 and glass cloth after; Adopt silicone rubber kinds high temperature elastic bonding encapsulant lining to paste acid 2 more in the above; Gather fluoropolymer organic lining anticorrosive material VP3-2 1 two roads, thickness 0.5mm in the acid surface brush at last;
6. maintenance: room temperature: 1-3 days, or heat: after 50-80 ℃ of maintenance 3-8 hour, again at 100-150 ℃ of maintenance 12-48 hour.
Wherein, silicone rubber kinds high temperature elastic bonding encapsulant available silicon rubber, silicone adhesive, fluorosioloxane rubber, polyurethane adhesive.
Claims (2)
1. the anticorrosion structure of the steel flue gas duct of a brick lining chimney and chimney handing-over seam; It is characterized in that; Said anticorrosion structure is by on the platform of chimney one side 250-300mm a wide 30-50mm to be arranged at steel flue gas duct and chimney handing-over seam, the groove of dark 50-100mm, and the length of groove is wide identical with flue; In the handing-over seam, irritate silicone rubber kinds high temperature elastic bonding encapsulant is arranged; In the groove of handing-over seam one side, also fill silicone rubber kinds high temperature elastic bonding encapsulant; And scrape by the zone between the groove on handing-over seam one end to the platform at steel flue gas duct and to scribble silicone rubber kinds high temperature elastic bonding encapsulant; Other has a L shaped steel plate; Said L shaped steel plate left-hand thread is being scraped the zone that scribbles silicone rubber kinds high temperature elastic bonding encapsulant, and an end of steel plate buckles in said groove, the other end and steel flue gas duct welding; On said steel plate, be coated with gathering fluoropolymer organic lining anticorrosive material and the compounded glass fiber reinforced plastic of glass cloth; On said glass fiber reinforced plastic, be coated with the acid that adopts silicone rubber kinds high temperature elastic bonding encapsulant lining to paste, scribble in said acid surface brush and gather fluoropolymer organic lining anticorrosive material;
Wherein, silicone rubber kinds high temperature elastic bonding sealing material use silicon rubber, silicone adhesive or polyurethane adhesive;
The said fluoropolymer organic lining anticorrosive material that gathers is made up of A and two kinds of components of B; The A component is to be raw material by fluorine-containing rubber earlier; Add stabilizing agent and reinforcing filler again and carry out mixingly, form elastomeric compound, make solvent with ketone, ester class or alcohols then; Putty type rubber cement is processed in dissolving, adds filler therein again and auxiliary agent is processed; The B component is additive and organic solvent; After A, B component mix, be coated with and be contained in by preserver surface, sulfuration at room temperature forms anticorrosive coat, reaches anticorrosion purpose.
2. the method for anticorrosion treatment of the steel flue gas duct of a brick lining chimney and chimney handing-over seam, its step is following:
(1) removes steel flue gas duct and chimney and hand over the former anticorrosive coat of seam crossing, draw steel flue gas duct and chimney handing-over seam clearly to substrate;
(2) depend on wide 30-50mm of cutter on the platform of chimney one side 250-300mm at the handing-over seam, the groove of dark 50-60mm, elongated along the flue width, and make a L shaped steel plate;
(3) in the handing-over seam, fill silicone rubber kinds high temperature elastic bonding encapsulant;
(4) in cell body, fill silicone rubber kinds high temperature elastic bonding encapsulant; And at steel flue gas duct by the regional blade coating silicone rubber kinds high temperature elastic bonding encapsulant between the groove on handing-over seam one end to the platform; Then with L shaped steel plate left-hand thread; One end of L shaped steel plate is buckled in the groove, the other end and steel flue gas duct welding;
(5) on L shaped steel plate with gathering the compound glass fiber reinforced plastic of processing of fluoropolymer organic lining anticorrosive material and glass cloth, on glass fiber reinforced plastic, adopt silicone rubber kinds high temperature elastic bonding encapsulant lining to paste acid again, gather fluoropolymer organic lining anticorrosive material in the acid surface brush at last;
(6) maintenance: room temperature: 1-3 days, or heat: after 50-80 ℃ of maintenance 3-8 hour, again at 100-150 ℃ of maintenance 12-48 hour;
Wherein, silicone rubber kinds high temperature elastic bonding sealing material use silicon rubber, silicone adhesive or polyurethane adhesive;
The said fluoropolymer organic lining anticorrosive material material that gathers is made up of A and two kinds of components of B; The A component is to be raw material by fluorine-containing rubber earlier; Add stabilizing agent and reinforcing filler again and carry out mixingly, form elastomeric compound, make solvent with ketone, ester class or alcohols then; Putty type rubber cement is processed in dissolving, adds filler therein again and auxiliary agent is processed; The B component is additive and organic solvent; After A, B component mix, be coated with and be contained in by preserver surface, sulfuration at room temperature forms anticorrosive coat, reaches anticorrosion purpose.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010561238 CN102168503B (en) | 2010-11-26 | 2010-11-26 | Anticorrosion structure for intersection joint of steel flue and chimney of brick lining chimney and anticorrosion treatment method |
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| CN 201010561238 CN102168503B (en) | 2010-11-26 | 2010-11-26 | Anticorrosion structure for intersection joint of steel flue and chimney of brick lining chimney and anticorrosion treatment method |
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| CN102168503A CN102168503A (en) | 2011-08-31 |
| CN102168503B true CN102168503B (en) | 2012-12-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1382441A (en) * | 1971-01-28 | 1975-01-29 | Piot J C M | Chimneys |
| CN1786397A (en) * | 2005-12-14 | 2006-06-14 | 孙克勤 | Chimney with preventing flue permeating corrosion and its method |
| CN101725270A (en) * | 2009-12-04 | 2010-06-09 | 上海德昊化工有限公司 | Sealing corrosion-resistant structure of expansion joint of brick lining chimney |
| CN101793105A (en) * | 2010-03-26 | 2010-08-04 | 西安天元合成材料有限公司 | Anti-corrosion method of inner wall of stack |
| CN101891993A (en) * | 2010-07-06 | 2010-11-24 | 重庆大众防腐有限公司 | Fluoropolymer organic lining anticorrosive material for chimney, flue and other pipelines and containers and construction method thereof |
-
2010
- 2010-11-26 CN CN 201010561238 patent/CN102168503B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1382441A (en) * | 1971-01-28 | 1975-01-29 | Piot J C M | Chimneys |
| CN1786397A (en) * | 2005-12-14 | 2006-06-14 | 孙克勤 | Chimney with preventing flue permeating corrosion and its method |
| CN101725270A (en) * | 2009-12-04 | 2010-06-09 | 上海德昊化工有限公司 | Sealing corrosion-resistant structure of expansion joint of brick lining chimney |
| CN101793105A (en) * | 2010-03-26 | 2010-08-04 | 西安天元合成材料有限公司 | Anti-corrosion method of inner wall of stack |
| CN101891993A (en) * | 2010-07-06 | 2010-11-24 | 重庆大众防腐有限公司 | Fluoropolymer organic lining anticorrosive material for chimney, flue and other pipelines and containers and construction method thereof |
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| CN102168503A (en) | 2011-08-31 |
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Owner name: VOLK-ANTICORROSION CO., LTD. Free format text: FORMER NAME: CHONGQING DAZHONG EROSION-PROOF CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 401121, 9, West Honghu Road, 18 North New District, Chongqing Patentee after: Volk-anticorrosion Co., Ltd. Address before: 401121 9, 18 West Honghu Road, Yubei District New District, Chongqing Patentee before: Chongqing Dazhong Erosion-Proof Co., Ltd. |