CN106895427A - A kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder - Google Patents
A kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder Download PDFInfo
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- CN106895427A CN106895427A CN201710214286.7A CN201710214286A CN106895427A CN 106895427 A CN106895427 A CN 106895427A CN 201710214286 A CN201710214286 A CN 201710214286A CN 106895427 A CN106895427 A CN 106895427A
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- Prior art keywords
- fiberglass
- paster
- inner cylinder
- anticorrosive coat
- steel plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
- F23J13/02—Linings; Jackets; Casings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder, the clad steel plate includes heat-insulation layer, structure sheaf, composite bed, main anticorrosive coat, confining bed；The structure sheaf outside is provided with heat-insulation layer, and the inner surface of structure sheaf is laid with composite bed, and main anticorrosive coat is laid on the surface of composite bed, and the outer surface of main anticorrosive coat is laid with confining bed；It is 2~5mm that the thickness of the main anticorrosive coat is；The thickness of the confining bed is 05 2mm.It is an advantage of the invention that：Rational in infrastructure, each layer has played the premium properties of material therefor, respectively takes the chief, makes the best use of everything, it is to avoid waste of material；It is practical, main anticorrosive coat has the antiseptic property more outstanding than traditional glass steel inner cylinder, and due to being additionally arranged one confining bed on the outside of main anticorrosive coat so that fiberglass paster clad steel plate inner cylinder anticorrosion structure forms self-locking, sealing is more excellent, can effectively prevent corrosive medium seepage.
Description
Technical field
The present invention relates to a kind of anti-corrosive apparatus, more particularly, to a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder.
Background technology
In order to control SO2、SO3Concentration of emission and discharge capacity, thermal power plant use flue gas desulfurization technique mostly, and wet method lime
Stone washing method be countries in the world today application at most and most ripe technique, be also the leading technology of domestic thermal power plant desulfurization.
, when GGH heater heating systems are not set, flue-gas temperature is typically at 40~50 DEG C for wet desulfurizing process.Due to through wet
Method desulfurization, smoke moisture increases, temperature reduction, and flue gas easily condenses in the inwall of chimney, such as three remaining oxidations in flue gas
After sulphur dissolving, the very strong dilution heat of sulfuric acid of corrosivity is formed, also some hydrogen chloride solutions, nitrate solutions and hydrogen fluoride is molten
Liquid.
Therefore, desulfuration chimney more commonly without about 130 DEG C of desulfuration chimney flue-gas temperature for, its operating condition have significantly not
Together：
1st, smoke moisture is big, the Korrosionsmedium for containing under double action of the flue gas in normal pressure and humidity, in chimney
The material internal of side structure low density is subject to corrosion very much, influences structure durability.
2nd, low concentration dilute sulfuric acid solution is more stronger than the acid liquid corrosion of high concentration.
3rd, the temperature of acid solution is at 40-80 DEG C, and the corrosivity to structural material is especially strong.By taking steel as an example, at 40-80 DEG C
Etch ratio be higher by about 3-8 times in other temperature.
It follows that the chimney of the common non-desulfurization fume of the chimney brake specific exhaust emission of discharge desulfurization fume is to Anti-corrosion design requirement
It is much higher, therefore when desulfuration chimney is designed, the anticorrosive measure of inner wall of stack should further be strengthened.
Current domestic common desulfuration chimney anti-corrosion is that titanium plate and the steel plate of common Q 235 are formed into titanium steel by explosive welding to answer
Plywood, resists the corrosion of acid ＆ alkali liquid using the passivating film of titanium Surface Creation, but the of a relatively high 2.6 ten thousand/t of cost, commissure
Easily by fast erosion.
The content of the invention
The present invention is directed to the deficiency of existing product, and provides a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder.This
The technical problems to be solved by the invention are：
A kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder of the invention, the clad steel plate includes heat-insulation layer, knot
Structure layer, composite bed, main anticorrosive coat, confining bed；The structure sheaf outside is provided with heat-insulation layer, and the inner surface of structure sheaf is laid with
Main anticorrosive coat is laid on composite bed, the surface of composite bed, and the outer surface of main anticorrosive coat is laid with confining bed；The main anticorrosive coat
It is 2~5mm that thickness is；The thickness of the confining bed is 05-2mm.
Further, the structure sheaf is made of Q235 or Q345 steel plates.
Further, the composite bed is made of the silicon-based modifying elastic cement of intercrossed network type.
Further, the main anticorrosive coat is anti-flaming glass fiber reinforced plastics paster, and thickness is 3~4mm, using high-temperature-resistant flame-retardant resin
It is composited with glass fibre.
Further, the confining bed is the thick fiberglass of 1mm, and the surface resin content of fiberglass is more than 90%.
The beneficial effects of the invention are as follows：1st, rational in infrastructure, each layer has played the premium properties of material therefor, respectively takes institute
It is long, make the best use of everything, it is to avoid waste of material；2nd, practical, main anticorrosive coat is prevented with more outstanding than traditional glass steel inner cylinder
Rotten performance, and due to being additionally arranged one confining bed on the outside of main anticorrosive coat so that fiberglass paster clad steel plate inner cylinder anti-corrosion
Structure forms self-locking, and sealing is more excellent, can effectively prevent corrosive medium seepage；3rd, new material application, difficult for drop-off, knot
Structure design is more accurate, and fiberglass paster is relatively thin, therefore can be not involved in inner tube structure calculating, effectively prevent traditional glass steel inner cylinder
The difficult shortcoming of structure design so that structure design is more accurate.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
In figure：Heat-insulation layer 1, structure sheaf 2, composite bed 3, main anticorrosive coat 4, confining bed 5.
Specific embodiment
With reference to embodiment, the invention will be further described.
A kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder of the invention it is main by heat-insulation layer 1, it is structure sheaf 2, compound
Layer 3, main anticorrosive coat 4, confining bed 5 are constituted.
The clad steel plate includes heat-insulation layer 1, structure sheaf 2, composite bed 3, main anticorrosive coat 4, confining bed 5；The structure sheaf 2
Outside is provided with heat-insulation layer 1, and the inner surface of structure sheaf 2 is laid with composite bed 3, and main anticorrosive coat 4 is laid on the surface of composite bed 3,
The outer surface of main anticorrosive coat 4 is laid with confining bed 5；It is 2~5mm that the thickness of the main anticorrosive coat 4 is；The confining bed 5
Thickness is 05-2mm.
Heat-insulation layer 1 is ground floor-thermal insulation layer, can be cancelled in the case where chimney is in wet desulphurization accidental conditions.
The structure sheaf 2 is made of Q235 or Q345 steel plates.Structure sheaf has that intensity is high, material property using steel construction
The advantage such as isotropism and stabilization, processing install convenient, material reproducible utilization, and price of steel product is relatively low, is most excellent
Structural material.Because inner tube structure weight is born by structure of steel product layer, held by fiberglass body relative to traditional glass steel inner cylinder
Carry, fiberglass paster thickness only needs to meet requirement for anticorrosion, greatly reduces the cost of anticorrosive coat.
The composite bed 3 is made of the silicon-based modifying elastic cement of intercrossed network type.Clay is silicon-based modifying poly- using IPN-e
Compound addition white carbon, the three kinds of inorganic fillers of carbon black and barium sulfate are mixed.Elastic cement is pasted onto on inner wall of stack, is glued
After patch, clay is higher than sheet of glass fiber reinforced plastics at gap, and being compacted clay with scraper stitches, and realizes the effect of edge sealing.
The main anticorrosive coat 4 is anti-flaming glass fiber reinforced plastics paster, and thickness is 3~4mm, using high-temperature-resistant flame-retardant resin and glass
Fiber composite is formed.Not only there is anti-flaming glass fiber reinforced plastics patch the antiseptic property more outstanding than traditional glass steel inner cylinder to be better than titanium steel
Plate, and belong to anti-flammability, the inflammable fatal defects of traditional glass steel are overcome, also with extraordinary wearability, Ke Yibao
The clay for protecting composite bed is not frayed.
The confining bed 5 is the thick fiberglass of 1mm, and the surface resin content of fiberglass is more than 90%.Confining bed is in master
The construction of main anticorrosive coat 4 is completed and by after examination, to its surface sand-blasting, cleaning, then pasting the thick glass of one layer of 1mm on its surface
Glass steel so that the anticorrosion structure of fiberglass paster clad steel plate inner cylinder forms self-locking, sealing is more excellent, can effectively prevent
Corrosive medium seepage；Meanwhile, the swelling internal stress produced during temperature alternating can be buffered.
A kind of main anticorrosive coat 4 of desulfuration chimney fiberglass paster clad steel plate inner cylinder of the invention uses customizable flame retardant type
Fiberglass paster；
The flexible glass steel paster that main anticorrosive coat 4 is used, its corrosion resistance shows as：15%H2SO4,70 DEG C, 168h, by force
Degree is slightly improved, and outward appearance is without significant change.Experiment proves that it has outstanding antiseptic property as traditional whole glass steel inner cylinder
(being better than titanium steel plate).
Unlike homogeneous tube segmentation winding at the construction field (site) being needed from traditional whole glass steel inner cylinder, the glass that the present invention is used
Glass steel paster, in factory's batch production, can be incited somebody to action by chimney size customized production fritter anti-flaming glass fiber reinforced plastics arc plate after transporting to scene
It is connected along inner wall of stack successively lining cutting, and product quality is more easy to ensure.Be may be alternatively configured when the area of fiberglass paster is smaller flat
Plate.
Fiberglass paster area is usually 0.25m2, fiberglass paster thickness is generally 2.5~5mm.Fiberglass paster is carried on the back
Face is provided with reinforcement, is more beneficial for it bonding with structure sheaf 2.
The anti-flammability of the paster and construction are not required to welding, inflammable fatal of traditional glass steel inner cylinder is overcome completely and is lacked
Point.And the temperature resistance of the paster reaches 150 DEG C (180 DEG C of moments).
A kind of composite bed 3 of desulfuration chimney fiberglass paster clad steel plate inner cylinder of the invention uses intercrossed network type silicon substrate
It is polymer-modified；
Composite bed is the key that main anticorrosive coat 4 and the realization of structure sheaf 2 are combined closely, its intensity, anti-corrosive properties, elasticity, temperature
The indexs such as degree deformation coefficient are both needed to meet and require.Composite bed 3 uses the intercrossed network type silicon-based modifying elastic cements of IPN-e, belongs to
New material, is different from traditional clay, and its adhesive strength reaches more than 2.5MPa, 200 DEG C of heatproof, antiseptic property especially anti-fluorination
Hydrogen solution improving soaking is outstanding, stretch percentage elongation is more than 100%.
Fiberglass paster transports to chimney scene after being produced in batches in factory, after chimney internal cylinder inwall is cleaned on matrix
, then with the silicon-based modifying elastic cements of IPN-e be pasted onto on inner wall of stack fiberglass paster by one clay of full coat, after stickup,
Clay is higher than sheet of glass fiber reinforced plastics at gap, and being compacted clay with scraper stitches, and realizes the effect of edge sealing.
Main anticorrosive coat 4 sets confining bed 5 after blasting treatment；
Completed and by after examination, carrying out sandblasting to fiberglass paster outer surface and cleaning in the construction of main anticorrosive coat 4, can be with
Ensure that main anticorrosive coat 4 is reliable Nian Jie with confining bed 5.After confining bed 5 is constructed so that fiberglass paster clad steel plate inner cylinder anti-corrosion
Structure forms self-locking, and sealing is more excellent, can effectively prevent corrosive medium seepage；Meanwhile, when can buffer temperature alternating
The swelling internal stress of generation.
A kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder of the invention has the characteristics that：
1) material is saved；
The compound steel inner cylinder each layer of scheme of fiberglass paster has played the premium properties of material therefor, respectively takes the chief, and thing is most
It is used, it is to avoid waste of material, such that it is able to reduce cost, with " section material " feature.
The fiberglass paster that particularly main anticorrosive coat 4 is used, not only prevents with outstanding as traditional glass steel inner cylinder
Rotten performance (being better than titanium steel plate), and with anti-flammability (fire retardant), overcome the inflammable fatal defects of traditional glass steel.Structure sheaf
2 use common Q 235 or Q345 steel plates, can give full play to steel construction high intensity, the advantage of easy processing.Relative to traditional glass
Glass steel inner cylinder is carried by fiberglass body, and fiberglass paster thickness only needs to meet requirement for anticorrosion, greatly reduces anticorrosive coat
Cost.
According to the technical economic analysis of different inner cylinder Corrosion prevention schemes, generally it is using the compound steel inner cylinder scheme of fiberglass paster
Economy optimal case, more the most frequently used titanium steel composite board scheme can save inner cylinder civil engineering costs about 20~35%.
2) self-locking type anticorrosion structure antiseptic property is more excellent；
The compound steel inner cylinder scheme of the fiberglass paster, not only main anticorrosive coat 4 is with more excellent than traditional glass steel inner cylinder
Elegant antiseptic property (being better than titanium steel plate), and due to being additionally arranged one confining bed 5 in the outside of main anticorrosive coat 4 so that fiberglass
Paster clad steel plate inner cylinder anticorrosion structure forms self-locking, and sealing is more excellent, can effectively prevent corrosive medium seepage.
3) new material application, difficult for drop-off；
The compound steel inner cylinder scheme of the fiberglass paster, the new glass fibre reinforced plastic paster that its main anticorrosive coat 4 is used not only has
Outstanding antiseptic property (being better than titanium steel plate) as traditional glass steel inner cylinder, and it is different from the inflammable spy of traditional glass steel
Point, with anti-flammability, burning is difficult when naked light occurs；Its composite bed 3 employs the silicon-based modifying elasticity of intercrossed network type IPN-e
Clay, belongs to new material, is different from traditional clay, and its adhesive property, heat resistance, antiseptic property, deformation performance are outstanding.
By IP N-e flexibility clay steel inner cylinder, flexible glass steel paster are closely combined, along with the glass through blasting treatment
The confining bed 5 that steel paster is reliably bonded, four laminated one；And each layer temperature deformation coefficient is close, ensure that each layer compatibility of deformation,
It is difficult for drop-off.
4) structure design is more accurate；
Traditional glass steel inner cylinder, or leaving excessive allowance in structure design, causes to waste；Insufficient rigidity, leads
Cause various problems.In the compound steel inner cylinder scheme of the fiberglass paster, because the fiberglass paster is relatively thin, therefore can be not involved in
Inner tube structure is calculated, and effectively prevent the difficult shortcoming of traditional glass steel inner cylinder structure design so that structure design is more accurate.
5) product quality is easily ensured；
Because glass fiber reinforced plastics product is higher to environmental requirement, the fiberglass paster is in plant produced, production environment room
Needed after humiture is controllable, and product is offline by strict quality testing, product quality is easier to be protected.
Antiseptic property an order of magnitude higher than the fiberglass of field-winding of prefabrication fiberglass paster.Compare foam glass
Compactness several orders of magnitude high of brick.
6) construction quality is easy to control, speed of application is fast, construction is without dead angle；
Because fiberglass paster area is usually 0.25m2, fiberglass paster thickness is generally 2.5~5mm, so monolithic
The fiberglass paster relatively light and shape that is translucent.In construction, first one of full coat on matrix after chimney internal cylinder inwall cleaning
, then with the silicon-based modifying elastic cements of IPN-e be pasted onto on inner wall of stack fiberglass paster by clay.After stickup, glue at gap
Mud need to be higher than sheet of glass fiber reinforced plastics, and being then compacted clay with scraper stitches, and realizes the effect of edge sealing.
The characteristics of having frivolous due to fiberglass paster, so can visually check the clay between paster and matrix during construction
It is whether full, so as to effectively overcome steel inner cylinder to serve as a contrast foam glass brick (import Bin Gao get) construction quality deficiency rambunctious.
In the compound steel inner cylinder scheme of fiberglass paster, fiberglass paster area is compared with relative to foam glass brick, (import guest is high
) larger, its construction is more quick, and speed of application is fast.Also, the construction of fiberglass paster can match with steel inner cylinder installation progress
Close, before steel inner cylinder lifting, paste the main anticorrosive coat 4 in steel inner cylinder to be lifted on ground, not only construct faster, Er Qieshi
Working medium amount is easier to be protected.About 50 days installation periods of general single 200-240 meters single internal cylinder chimney.Compare foam glass brick
Anti-corrosion install the saving time more than 1/3.
Due to fiberglass paster when shaping shape have can design mode, can be according to actual requirement of engineering, specific
Special-shaped part carries out supporting special-shaped shaping with mould, and special protection is carried out to privileged sites.And can be cut during in-site installation,
Polishing, it is ensured that construction is without dead angle.
7) easy-maintaining, long lifespan；
The compound steel inner cylinder scheme of the fiberglass paster, because fiberglass paster area is smaller, if it is detachable leak source occur
Maintenance；Maintenance difficulty is small, cycle is short, expense are low.Program service life was up to 30 years.
8) save land, environmental protection；
Fiberglass paster need at the scene build winding workshop in plant produced relative to traditional glass steel inner cylinder, and installation is twined
Around equipment, site operation place is saved, the characteristics of with " saving land ".Meanwhile, it also avoid scene processing glass reinforced plastic inner cylinder can
The environmental pollution that can be caused, with " environmental protection " feature.
A kind of fiberglass paster area of desulfuration chimney fiberglass paster clad steel plate inner cylinder of the present invention is compared with relative to foam
Glass block is larger, and its construction is more quick, and speed of application is fast.Also, the construction of fiberglass paster can be with steel inner cylinder installation progress phase
Coordinate, before steel inner cylinder lifting, paste the main anticorrosive coat 4 in steel inner cylinder to be lifted on ground, not only construct faster, and
Construction quality is easier to be protected.About 50 days installation periods of general single 200-240 meters single internal cylinder chimney.Compare foam glass
The anti-corrosion of brick installs the saving time more than 1/3.Due to fiberglass paster when shaping shape have can design mode, can be according to reality
Border requirement of engineering, supporting special-shaped shaping is carried out with mould in specific special-shaped part, and special protection is carried out to privileged sites.And
And can be cut during in-site installation, polished, it is ensured that construction is without dead angle.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (5)
1. a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder, it is characterized in that, including it is heat-insulation layer (1), structure sheaf (2), multiple
Close layer (3), main anticorrosive coat (4), confining bed (5)；The structure sheaf (2) outside is provided with heat-insulation layer (1), structure sheaf (2) it is interior
Side surface is laid with composite bed (3), and main anticorrosive coat (4) is laid on the surface of composite bed (3), and the outer surface of main anticorrosive coat (4) is applied
It is provided with confining bed (5)；It is 2~5mm that the thickness of the main anticorrosive coat (4) is；The thickness of the confining bed (5) is 05-2mm.
2. a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder according to claim 1, it is characterized in that, the structure
Layer (2) is made of Q235 or Q345 steel plates.
3. a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder according to claim 1, it is characterized in that, it is described compound
Layer (3) is made of the silicon-based modifying elastic cement of intercrossed network type.
4. a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder according to claim 1, it is characterized in that, the master prevents
Rotten layer (4) is anti-flaming glass fiber reinforced plastics paster, and thickness is 3~4mm, is composited with glass fibre using high-temperature-resistant flame-retardant resin.
5. a kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder according to claim 1, it is characterized in that, the closing
Layer (5) is 1mm thick fiberglass, and the surface resin content of fiberglass is more than 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214286.7A CN106895427A (en) | 2017-04-01 | 2017-04-01 | A kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214286.7A CN106895427A (en) | 2017-04-01 | 2017-04-01 | A kind of desulfuration chimney fiberglass paster clad steel plate inner cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774424A (en) * | 2019-11-11 | 2021-05-11 | 广东红海湾发电有限公司 | Overhauling structure for online repairing perforation of desulfurization absorption tower |
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| CN201381670Y (en) * | 2009-04-08 | 2010-01-13 | 北京国电华北电力工程有限公司 | Chimney adopting sectional glass reinforced plastic inner cylinder for exhausting low-temperature flue gas after wet desulfurization |
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| CN112774424A (en) * | 2019-11-11 | 2021-05-11 | 广东红海湾发电有限公司 | Overhauling structure for online repairing perforation of desulfurization absorption tower |
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