CN201705002U - Anticorrosive device for inner wall of chimney - Google Patents
Anticorrosive device for inner wall of chimney Download PDFInfo
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- CN201705002U CN201705002U CN2010201423797U CN201020142379U CN201705002U CN 201705002 U CN201705002 U CN 201705002U CN 2010201423797 U CN2010201423797 U CN 2010201423797U CN 201020142379 U CN201020142379 U CN 201020142379U CN 201705002 U CN201705002 U CN 201705002U
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Abstract
The utility model relates to the field of chimney anticorrosion, in particular to an anticorrosive device for the inner wall of a chimney, which is characterized in that anticorrosive plates are fixed on the inner wall of the chimney through steel nails, sealing bodies are used for connection between the anticorrosive plates, the sealing bodies are colloids and consist of multilayer sealing rubber, a layer of glass cloth is respectively arranged between multiple sealing rubber layers, the steel nails are titanium alloy nails or stainless steel nails, and the anticorrosive plates are in a rectangular shape or a trapezoidal shape. The utility model provides the anticorrosive device for the inner wall of the chimney, which has the advantages of good manufacturability, strong anticorrosive capability and low manufacture cost.
Description
Technical field
The utility model relates to the chimney anticorrosion field, specifically is a kind of anti-corrosive apparatus of inner wall of stack.
Background technology
The application of flue gas desulfurization technique makes the inner wall anti-corrosive of enterprise's chimneys such as thermal power plant become a big technical barrier in the industry, because the desulfurization flue gas that chimney discharged is the system of a complicated component, its main corrosion composition is a sulfuric acid, hydrochloric acid and calcium thereof, magnesium, sodium salt and other electrolyte etc., when electrolyte such as these sulfuric acid and salt discharge in chimney with the form of steam, they can be at chimney inwall condensation and dewfall, generally speaking, the pH value of this desulfurization wet flue gas and condensate liquid thereof is about 2, be that corrosive medium is an acid solution, strong chemical reaction can take place with it and destroyed in general mineral-type materials such as steel and cement etc., and visible desulfurization flue gas has very deep-etching effect to the brick inwall of chimney.It is anticorrosion that the brick inwall of chimney must carry out strictness, can guarantee the normal safe operation and the application life of chimney.
The general industry chimney mainly is made of concrete wall, insulation layer, inwall and anticorrosive coat from outside to inside.Inwall includes liner and inner core.Common liner is brick liner at present, brick liner is meant: the step that body of wall stretches out every one section oriented chimney center, build on the step to build brick is arranged, and build to the end that steps to a new level, the set of all bricks of having built in the chimney just forms a liner, and brick liner pastes with body of wall tightly mutually across insulation layer; Described inner core also is common brick inner core, its form of structure is: concrete wall is provided with some groups of fixation means: the annular overarm, it also stretches out to the chimney center, every section brick inner core promptly is fixed in the annular overarm, different with above-mentioned brick liner is, separate between brick inner core and the chimney concrete wall, and form the inner core of independently discharging fume.
The anti-corrosion material of the brick inwall of chimney must be able to bear the destruction of chimney numerous unfavorable factors under various normal and abnormal running environment, and will be arranged enough application life.There is the following aspects ordinary circumstance lower stack inside to the principal element that anticorrosive coat damages.
At first be flue gas forms the corrosive medium acid solution on the brick inwall of chimney erosion damage, aforesaid strong corrosive medium (no GGH is approximately 50 ℃, is about 80 ℃ when GGH is arranged) under higher temperature has extremely strong corrosivity.The brick inner wall anti-corrosive material of chimney must guarantee to have enough chemistry and physics inertia under this environmental activity, could its intensity of long term maintenance and impermeabilisation ability.
Next is that high temperature destroys; chimney has the short-term high temperature impact about 200 ℃ when abnormal running; this operating mode has very large destruction to the especially organic class anti-corrosion material of many anti-corrosion materials, can cause usually material decomposition, ftracture, come off and shorten application life etc.Obviously the prerequisite that guarantees the anti-corrosion material safe handling is must be after repeatedly standing this short-term high temperature, and material can be kept enough intensity, and strictly keeps not ftractureing and excessive decomposition not.Generally, should require material can bear the high temperature that is not less than 230 ℃, be not less than 8 hours the action time of withstand high temperatures.
The height of chimney internal temperature changes also easily makes the material production stress cracking, and the temperature difference is big more, and Wen Bianyue is frequent, and it is serious more to ftracture, and the anti-corrosion material that the brick inwall of chimney uses must not ftracture when high low temperature changes, and has higher reliability.
In addition, but a lot of anti-corrosion materials become solid state by flow regime before and after construction, this transformation must cause the obvious contraction of solidifying the back material, thereby cause defectives such as cracking, crackle and shrinkage cavity, this class defective provides good infiltration lane to acid solution, make its through chimney wall cause corrosion, this class problem of general anti-corrosion material is all comparatively outstanding.The anticorrosive coat that uses as the brick inner core of chimney requires this phenomenon of absolute prohibition to occur, and therefore shrinkage factor is big before and after the construction, and the little material of elasticity or plastic deformation can not be applied to this occasion.In the chimney high velocity air wash away the destruction that also very easily causes anticorrosive coat, so anti-corrosion material also must have enough mechanical strengths, the impact that brings with the opposing high velocity air, tears and denudes.
The anti-corrosion material of external at present discharging desulfurization flue gas inner wall of stack roughly has acid, titanium steel plate, foam glass brick, the pours liner of block, steel inner cylinder+coating waters and directly apply coating etc.These methods cut both ways, and are the safest with titanium steel plate, but the cost height; The corrosion of the desulfurization flue gas that acid can't be resisted in the chimney to be discharged as anticorrosive coat; Foam glass brick impacts as the high velocity air that anticorrosive coat is difficult to resist in the chimney; The anticorrosive coat that pours forms has fine cracks and itself can not resist the corrosion of strong acid; Directly when chimney moves, will soon ftracture and come off at applying coatings on brick inner core or the liner; Also all there is technical defective in additive method.
Chimney anticorrosion adopts the gluing mode, and promptly painting anticorrosion glue prevents corrosion on brick liner or brick inner core.But, because the different heat expansion coefficient of brick liner or brick inner core and concrete wall and heating temperature is different, the rigid nature that general in addition dope produces in the intact back of application, promptly can't stretch along with the slippage of liner or inner core and body of wall or shorten, slippage reach a certain amount of after, the anticorrosive coat that dope forms can be torn, the corrosive medium in the chimney will corrode liner or inner core.Particularly when the inner wall of stack surface was rough and uneven in surface, this sliding rupture will amplify.
So the material character of the surface texture of inner wall of stack, the coating process of anticorrosive coat and anticorrosive coat all can influence the antiseptic effect of anticorrosive coat.
In the use of chimney, can produce relative slippage because of material coefficient of thermal expansion coefficient and heating temperature are different separately between brick liner and the concrete wall.Usually the junction of the brick liner on every section step of body of wall is left the space and is formed the shrinkage joint and alleviate this sliding rupture, the popular bracket that is called of this shrinkage joint part, formal name used at school annular cantilever.For brick inner core and concrete wall, though both are directly contact not, but because connect the rigid nature of both annular overarms, brick inner core also can be because of material coefficient of thermal expansion coefficient and heating temperature are different separately with concrete wall, produce relative slippage when chimney moves, generally the shrinkage joint can be left in the junction between every section brick inner core.The width at shrinkage joint can change because of coefficient of thermal expansion different between brick liner or brick inner core and the body of wall, generally on the shrinkage joint during painting anticorrosion glue, it is directly at the direct gluing in the outer face at shrinkage joint, promptly be the brick liner of lower end at the end face of the draining board that is provided with in the upper end at shrinkage joint and shrinkage joint or the direct gluing of end face of brick inner core, do not consider the flexible surplus at shrinkage joint.At this moment, in view of the rigid nature of colloid, when the width at the shrinkage joint becomes big with operating mode, promptly this place's anticorrosive coat can be torn, the corrosive medium in the chimney will enter from the shrinkage joint and corrode liner or inner core.General liner or inner core material such as foam glass brick and anticorrosion colloid all have rigidity, and some have the material of flexible character such as rubber can not bear the acid in the chimney and the destruction of high temperature again.
Summary of the invention
The utility model provides the anti-corrosive apparatus of a kind of good manufacturability, antiseptic power is strong, cost is low a kind of inner wall of stack.
The technical solution of the utility model is: a kind of anti-corrosive apparatus of inner wall of stack is characterized in that: by the fixing anticorrosive board of steel nail, seal is connected between anticorrosive board and the anticorrosive board on inner wall of stack.
Described seal is a colloid.
Described seal is to be made of multi-layer sealed glue, and one deck glass fabric is respectively arranged between multi-layer sealed glue-line.
Described steel nail is titanium alloy nail or stainless steel nail.
Described anticorrosive board is a rectangle or trapezoidal.
Described anticorrosive board adopts following material: a kind of in fluoropolymer resin class plate such as RHF plate, epoxies plate, phenolic plate, polyphenylene sulfide plate, polyfluortetraethylene plate, polypropylene board, polyamide board, polyester sheet or polysulfones plate and the compounded composite plate of glass fabric.
Described glue-line is chosen following colloid: a kind of in RHF glue, epoxy vinyl resin, epoxy glue, phenol glue, organic silica gel, polyester glue, polyacrylate resin glue, polyurethane adhesive, the polyimides glue, or several in these fluoropolymer resins mix made compound adhesive.
The utility model has the advantages that: be fixed on the inner wall of stack by anticorrosive board and anticorrosive board splicing on the inner wall of stack, preserving and sealing is carried out in the splicing gap between anticorrosive board and the anticorrosive board again.Since the large-area anticorrosive board of mating formation, and anticorrosive board has originally been finished the amount of contraction of itself when being made into type, and materials such as the shrinkage factor of sheet material itself and cement and brick are close substantially, do not have the destruction problem that produces because of shrinking when therefore using in chimney.In addition, anticorrosive board have sheet material preparation easily, speed of application is high and the flexible characteristics such as (the circular arc inwall compliance to chimney are good) of sheet material.And anticorrosive board is fixed by nail or is bolted on the inwall of brick liner, compares more difficult being torn with application.Splicing gap between anticorrosive board and the anticorrosive board is sealed by gluing.Particularly between anticorrosive board and anticorrosive board, can't realize the big gap of tight fit splicing, as inner wall of stack annular cantilever place, by gluing layer by layer with lay glass fabric, form telescopic anti-corrosion layer structure, can prevent the cracking of this place's anticorrosive coat and cause corrosive medium to enter behind the inner wall of stack accident that brick liner and body of wall is caused corrosion failure.The problem of tearing with effective alleviation anticorrosive coat.
Description of drawings
Below in conjunction with the drawings and specific embodiments this utility model is described further.
Fig. 1 is the overlap joint front view of anticorrosive board at the brick liner of chimney;
Fig. 2 is that anticorrosive board is at the overlap joint A-A of the brick liner of chimney sectional view;
Fig. 3 is the anti-corrosion layer structure figure that is used for annular cantilever place in the chimney;
Fig. 4 is the another kind of anti-corrosion layer structure figure that is used for annular cantilever place in the chimney.
Among the figure: 1, anticorrosive board; 2, anticorrosive coat; 3, interval or gap; 4, steel nail; 5, glass fabric; 6, expansion piece; 7, brick liner; 8, chimney body of wall; 9, insulation layer; 10, shrinkage joint; 11, draining board.
The specific embodiment
As depicted in figs. 1 and 2, on brick liner 7 surfaces,, realize anticorrosion to inner wall of stack by anticorrosive board 1 by integral body splicing anticorrosive board 1.The anticorrosive board 1 of splicing can be by rectangle and the splicing of rectangle anticorrosive board, also can be by rectangle and trapezoidal anticorrosive board splicing, or trapezoidal anticorrosive board and trapezoidal anticorrosive board splicing.Concrete anticorrosive board size, shape are determined by the position of inner wall of stack.Anticorrosive board 1 can be processed into needed shape by processing plant in advance by the size and the structure of inner wall of stack, is transported to the chimney construction building site then and constructs.Anticorrosive board 1 can be fixed in the expansion piece 6 by steel nail 4 with the fixing of brick liner 7, and steel nail 4 can adopt titanium alloy nail or stainless steel nail to fix.The number of steel nail 4 is by the chimney size of construction and the size decision of anticorrosive board 1, the anticorrosive board 1 of fritter can be fixed with a spot of steel nail 4, the anticorrosive board 1 of bulk can be fixed with a plurality of steel nails 4, guarantee that anticorrosive board 1 and brick liner 7 are fixing reliable, this is a prerequisite of guaranteeing quality, because the wind-force in the chimney is very big, insecure fixedly meeting is directly blown off anticorrosive board 1 by high wind.
Anticorrosive board and anticorrosive board can carry out crimping splicing, also can be pressed on the interval of two anticorrosive boards or the gap 3 by press strip and splice, and anticorrosive board 1 and press strip are fixing with steel nail 4, and last gap seals with gluing.Employing crimping splicing when the fluid that forms when corrosive medium goes downstream like this, can not enter along the seam of the not complete closed between the anticorrosive board 1 that has, and corrodes brick liner.Equally when running into the high operating mode of from bottom to top wind speed in the chimney, can not form one towards following covering seam because of the upper end of anticorrosive board under the lower end covering of last anticorrosive board, cover seam and cause high speed winds directly to be impacted, because bonding reason such as not firm, may cause covering seam and tear, with the whole consequence that starts of last anticorrosive board.
Anticorrosive board and anticorrosive board have some interval or gaps 3 when splicing, when the position to brick liner 7 surfacings, the anticorrosive board of bulk can be placed in these positions, and no matter what shape anticorrosive board is, at this moment interval or gap are very little, and the gluing sealing is directly adopted at these intervals or gap.The colloid of gluing can be a kind of of RHF glue, epoxy vinyl resin, epoxy glue, phenol glue, organic silica gel, polyester glue, polyacrylate resin glue, polyurethane adhesive, polyimides glue, and perhaps several in these fluoropolymer resins mix made compound adhesive.Characteristics such as wherein RHF is the novel chimney special anti-corrosion material that is specifically designed to the big and frequent environment of high temperature, strong acid and range of temperature by the development of Xi'an Tianyuan chemical industry Co., Ltd in these glue, and this material has that performance is outstanding, long service life, easy construction and expense are lower.RHF can be prefabricated into anticorrosive board or anticorrosion section bar, also can be used as adhesive or coating and uses.
Produce the slit when preventing that steel nail 4 from entering in the expansion piece 6, but to steel nail 4 end gluings, again in glue-coated surface by paving glass fabric 5, glass cloth surface gluing, and then the paving glass fabric is repeatedly finished.
As shown in Figure 3, between chimney body of wall 8 and the brick liner 7 insulation layer 9 is arranged, on the step that chimney body of wall 8 stretches out to the chimney center, build to build brick liner 7 is arranged, there is draining board 11 junction of two sections brick liners 7, the purpose that draining board 11 is set mainly is to allow the outside of the corrosive medium fluid stream brick liner 7 in the bottom from top to down, draining board 11 constitutes shrinkage joint 10 with the junction, be coated with anticorrosive coat 2 on brick liner 7 and the shrinkage joint 10,10 places are flexible telescopic elastic construction to anticorrosive coat 2 at the shrinkage joint, should place's anticorrosive coat 2 be promptly to shrinkage joint 10 inner recessed certain sizes, fixing anticorrosive board on the inwall of brick liner 7.
Because gluing, again in glue-coated surface by paving glass fabric 5, the glass cloth surface gluing, and then the paving glass fabric repeatedly forms anticorrosive coat 2, and specially crooked flexible elastic construction is made with anticorrosive coat 2 in 10 position at the shrinkage joint, like this when the shrinkage joint varies with temperature its wide variety, anticorrosive coat has been reserved certain flexible surplus because have Collapsible structure, and the consequence that causes anticorrosive coat to be torn can not expand with heat and contract with cold because of body of wall and liner the time.Anticorrosive board on this place's anticorrosive coat and the brick liner inwall links into an integrated entity, and forms the anticorrosive coat system of an integral sealing.
Fig. 4 is the another kind of anti-corrosion layer structure figure that is used for annular cantilever place in the chimney, does not promptly have the anti-corrosion layer structure at the annular cantilever place of draining board 11.Equally: gluing, again in glue-coated surface by paving glass fabric 5, the glass cloth surface gluing, and then the paving glass fabric is repeatedly finished this anticorrosive coat 2 structures, and, specially also at the shrinkage joint 10 position anticorrosive coat 2 is made crooked flexible elastic construction, the annular cantilever place that is used in Fig. 4 also is fit closely.
The fixing need of anticorrosive board and anticorrosive board splicing carried out smooth preliminary treatment to the irregular position of inner wall of stack in the utility model.Smooth preliminary treatment can realize in the following way.(1) adopt high pressure water washing method or Mechanical Method dedusting to clear up the dust stratification of the brick liner of chimney of brickwork or sand finish.(2) surface there is the brick liner inwall of mortar or clay coat, should removes loose covering layer or loosening fragment of brick, stone and concrete etc.; To brick liner crack, must remove the loose filler in it; The part of the outstanding brick liner of the ridge of the brick liner of chimney should be destroyed and chipping, forms same plane with brick liner.(3) dispose the brick wall of sand finish and do not remove the transitional region wipe one's face and need smear into a smooth transition face, so that anticorrosive board can integral body be fitted on the metope with cement.
Anticorrosive board adopts following material: fluoropolymer resin class plate and the compounded composite plates of glass fabric such as RHF plate, epoxies plate, phenolic plate, polyphenylene sulfide plate, polyfluortetraethylene plate, polypropylene board, polyamide board, polyester sheet or polysulfones plate.Certainly this does not show that anticorrosive board is only limited to this, if possess corrosion-resistant material under the environment of high temperature, strong acid and range of temperature all be the utility model select to picture.
The utility model mainly is used in the industrial chimney, industrial chimney mainly is made of concrete wall, insulation layer, inner core and anticorrosive coat from outside to inside, its inner core also is common brick inner core, and (annular overarm) on the fixation means set on the concrete wall fixed and be carried on to every section brick inner core.Be similar to brick liner on the function of brick inner core herein, aforesaid protection domain to brick liner also comprises the protection domain to brick inner core.
Claims (7)
1. the anti-corrosive apparatus of an inner wall of stack is characterized in that: by the fixing anticorrosive board of steel nail, seal is connected between anticorrosive board and the anticorrosive board on inner wall of stack.
2. the anti-corrosive apparatus of a kind of inner wall of stack according to claim 1, it is characterized in that: described seal is a colloid.
3. the anti-corrosive apparatus of a kind of inner wall of stack according to claim 1, it is characterized in that: described seal is to be made of multi-layer sealed glue, and one deck glass fabric is respectively arranged between multi-layer sealed glue-line.
4. the anti-corrosive apparatus of a kind of inner wall of stack according to claim 1 is characterized in that: described steel nail is titanium alloy nail or stainless steel nail.
5. the anti-corrosive apparatus of a kind of inner wall of stack according to claim 1, it is characterized in that: described anticorrosive board is a rectangle or trapezoidal.
6. the anti-corrosive apparatus of a kind of inner wall of stack according to claim 1 is characterized in that: described anticorrosive board adopts following material: a kind of in RHF plate, epoxies plate, phenolic plate, polyphenylene sulfide plate, polyfluortetraethylene plate, polypropylene board, polyamide board, polyester sheet or polysulfones plate fluoropolymer resin class plate and the compounded composite plate of glass fabric.
7. the anti-corrosive apparatus of a kind of inner wall of stack according to claim 3, it is characterized in that: described glue-line is chosen following colloid: a kind of in RHF glue, epoxy vinyl resin, epoxy glue, phenol glue, organic silica gel, polyester glue, polyacrylate resin glue, polyurethane adhesive, the polyimides glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201423797U CN201705002U (en) | 2010-03-26 | 2010-03-26 | Anticorrosive device for inner wall of chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201423797U CN201705002U (en) | 2010-03-26 | 2010-03-26 | Anticorrosive device for inner wall of chimney |
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| Publication Number | Publication Date |
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| CN201705002U true CN201705002U (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201423797U Expired - Lifetime CN201705002U (en) | 2010-03-26 | 2010-03-26 | Anticorrosive device for inner wall of chimney |
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| CN (1) | CN201705002U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877682A (en) * | 2012-09-13 | 2013-01-16 | 成都龙泉防腐工程有限公司 | Anticorrosion device of thermal power chimney and construction method for anticorrosion device |
| CN111086599A (en) * | 2019-12-09 | 2020-05-01 | 上海长江轮船有限公司 | Gas supply system anticorrosion structure for gas layer drag reduction ship |
-
2010
- 2010-03-26 CN CN2010201423797U patent/CN201705002U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877682A (en) * | 2012-09-13 | 2013-01-16 | 成都龙泉防腐工程有限公司 | Anticorrosion device of thermal power chimney and construction method for anticorrosion device |
| CN102877682B (en) * | 2012-09-13 | 2014-07-02 | 成都龙之泉科技股份有限公司 | Anticorrosion device of thermal power chimney |
| CN111086599A (en) * | 2019-12-09 | 2020-05-01 | 上海长江轮船有限公司 | Gas supply system anticorrosion structure for gas layer drag reduction ship |
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| GR01 | Patent grant | ||
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Owner name: XI'AN TIANYUAN CHEMICAL CO., LTD. Free format text: FORMER OWNER: XI'AN TIANYUAN SYNTHETIC MATERIAL CO., LTD. Effective date: 20120920 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 710075 XI'AN, SHAANXI PROVINCE TO: 710025 XI'AN, SHAANXI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120920 Address after: 710025 No. 3, West Zone, Hong Qing Industrial Park, Shaanxi, Xi'an Patentee after: XI'AN TYCCO CHEMICAL CO., LTD. Address before: 710075 Shaanxi high tech Zone in Xi'an City, Feng Hui Nan Lu Crystal Plaza No. 20 China A403 Patentee before: Xi'an Tianyuan Synthetic Material Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |