CN101886814A - Anticorrosion method of chimney used for discharging wet-method desulfurized fume - Google Patents
Anticorrosion method of chimney used for discharging wet-method desulfurized fume Download PDFInfo
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- CN101886814A CN101886814A CN2010102193246A CN201010219324A CN101886814A CN 101886814 A CN101886814 A CN 101886814A CN 2010102193246 A CN2010102193246 A CN 2010102193246A CN 201010219324 A CN201010219324 A CN 201010219324A CN 101886814 A CN101886814 A CN 101886814A
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Abstract
The invention belongs to the field of anticorrosion of wet chimneys and discloses an anticorrosion method of a chimney used for discharging wet-method desulfurized fume. The method comprises the following steps of: continuously producing fiber glass reinforced plastic protection plates 2 which have a ribbed strap structure by using a fiber glass reinforced plastic material which has high corrosion resistance in a pultrusion and compression molding mode; fixing the fiber glass reinforced plastic protection plates 2 on the inner surface of a fume discharging cylinder 1 of the chimney by means of hanging, fixing by bolts, bonding or welding; and smartly connecting the fiber glass reinforced plastic protection plates one another to form an airtight complete fiber glass reinforced plastic protection cylinder which can efficiently prevent leakage of the fume to protect the chimney against the corrosion by the wet-method desulfurized fume.
Description
Technical field
The present invention relates to a kind of anti-corrosion method that is applied to the discharging wet-method desulfurized fume chimney.
Technical background
With the limestone-gypsum is the wet desulphurization technology of representative, and because of its efficient removal efficiency to sulfur dioxide in flue gas, lower operating cost is widely adopted in the fume emission processing procedure of thermal power plant.But flue gas has brought certain influence to fume emission after wet desulphurization.The temperature of flue gas is about 120 ℃-150 ℃ before the wet desulphurization, and temperature is reduced to 40 ℃-55 ℃ after the desulfurization; Steam in the flue gas is in saturation state, and unavoidably contains entrainment from the flue gas that desulfurizer comes out; Though the removal efficiency of sulfur dioxide can reach 95% in process of wet desulphurization, still have part to fail to remove, and wet desulphurization simultaneously is very low about 20-30% to the removal efficiency of sulfur trioxide in smoke gas; Enter in the process of smoke stack emission at flue gas like this, with temperature reduce flue gas constantly on inner wall of stack dewfall, condense, form the dilution heat of sulfuric acid of deep-etching, cause corrosion to inner wall of stack.Because the reduction of flue-gas temperature causes smoke density to increase, and chimney descends from draft, chimney internal positive pressure zone increases, like this to the further inner wall of stack corrosion rate of having quickened, to the protection and anticorrosion the having higher requirement of chimney simultaneously.
Coal-burning power plant, the original and newly-built chimney common type in smeltery have, monotubular formula reinforced concrete chimney, the steel stack that the telescopic or multitube chimney of refractory brick inner core sleeve chimney, steel inner cylinder, steelframe support, the telescopic chimney of all-glass fibre reinforced plastic chimney and whole fiberglass inner core is because of its good corrosion prevention performance in addition, characteristics such as high-strength light, be widely used in some engineerings abroad, but cost is higher, has limited its application at home.The chimney of these non-glass steel for adapting to the requirement of discharging wet-method desulfurized fume, has adopted following several preservative treatment scheme mostly at present.
1. liner scale resin;
2. inside lining anti-corrosive foam glass brick;
3. liner vitreous ceramic brick;
4. interior brushing anticorrosive coating;
5. titanium lined plate (composite titanium steel plate);
But there is such-and-such problem in these schemes in the process of practical engineering application, are difficult to reach the antiseptic effect of expectation, thoroughly solve wet chimney anticorrosion problem.
1. adopt the scale resin lining, advantages of good anticorrosion performance is arranged, but adaptive temperature is lower, service life is shorter, and the site operation cycle is longer, to the site operation quality requirement, and long construction period, service life is shorter;
2. foam glass brick and vitreous ceramic brick need lose bonding agent by organic anti-corrosive and be bonded on the steel inner cylinder, the corrosion-resistant factors affecting quality is a lot, require very high to site operation, the defective of local anticorrosion appearance will cause the failure of whole anticorrosion scheme, and the pad water absorption rate is big, slit difficult quality guarantee between pad;
3. brushing anticorrosive coating, though speed of application is fast, antiseptic property is poor, service life is short;
4. titanium lined plate scheme, though the titanium plate has good Corrosion Protection, because of very high to welding requirements, the corrosion case that causes because of weld seam emerges in an endless stream, and this scheme cost cost is very high;
Therefore, seek a kind of effectively, the chimney anticorrosion technology of economical rationality, be useful for the chimney of discharging wet-method desulfurized fume, become very important and urgent.Glass-reinforced plastic material is owing to have that light weight, intensity height, resistance to chemical corrosion are good, designability can wait characteristics by force, be particularly suitable for discharging the anticorrosion of wet desulphurization post-etching flue gas chimney, therefore the present invention proposes a kind of utilize the fiberglass protective plate to be assemblied to form to be lining in the chimney inner surface in the airtight fiberglass protection cylinder of a structure chimney is carried out preserving method.
Summary of the invention
The objective of the invention is to, a kind of anti-corrosion method that is applied to the discharging wet-method desulfurized fume chimney is provided, this method can prevent effectively that Korrosionsmedium is to the infiltration of chimney in the wet-method desulfurized fume, and the protection chimney avoids corrosion.
The technical solution adopted in the present invention:
Planform and the operating condition concrete according to the chimney inner surface, design reasonable chi length, thickness, radian and arc length the fiberglass protective plate, the length of fiberglass protective plate is 2-20m; Thickness is 40-70mm (apparent thickness); Radian is between 4-180 °; Arc length is 400-1000mm.The fiberglass protective plate be shaped as the sheet arc, for plate muscle structure, hoop and waling are arranged.The shape of reinforcement can be " T " font, " L " type and " worker " font.
According to the needs fiberglass protective plate that connects is installed different class molded dimensions can be arranged, arrange along chimney hoop alternate cycles.
Multi-form formulation according to the chimney emission chimney is connected and fixed scheme, the fiberglass protective plate is fixed on the inner surface of chimney emission chimney by suspension, bolting, bonding or welding manner.
Along the hoop of chimney, connect between the fiberglass protective plate, in bayonet socket, open seal groove, rubber blanket is set in the seal groove, guarantee the sealing that connects by bayonet socket; Described fiberglass protective plate is vertical along chimney, expansion joint by caoutchouc elasticity sealing joint strip pressuring method or sealing connects, thereby form a whole fiberglass protection cylinder that adapts with described chimney inner surface, this fiberglass protection cylinder structure is airtight, can effectively imitate the seepage that prevents flue gas, avoid the corrosion of wet-method desulfurized fume chimney.
Glass steel protective plate and the waling on it pass through the continuous pultrusion of pultrusion molding process by fiberglass pultrusion production equipment; The hoop reinforcement adopts the independent moulding of die press technology for forming, and then with the post forming that bonds of the fiberglass protective plate of pultrusion.
Described fiberglass protective plate contact fume side is anticorrosion conduction wearing layer, is followed successively by anticorrosion antiwear layer, structure sheaf and reinforcement behind the anticorrosion conduction wearing layer.
The used resin system of described anticorrosion conduction wearing layer is the epoxy vinyl resin, used reinforcing material is cut felt for short, and in resin, be packed into electrically conductive graphite and high-abrasive material carborundum, and the resin total content is (by weight) between 80%-90%, and the thickness of this layer is not less than 0.25mm.
The used resin system of described anticorrosion antiwear layer is the epoxy vinyl resin, and used reinforcing material is an alkali-free glass fibre loop bonding felt, and the resin total content is (by weight) between 55%-75%, and the thickness of this layer is not less than 1.0mm.
The used resin system of described structure sheaf is the epoxy vinyl resin, and used reinforcing material is the unidirectional yarn of glass fibre, and the resin total content is (by weight) between 30%-40%, and the thickness of this layer is not less than 5.0mm.
The used resin system of described reinforcement is the epoxy vinyl resin, and used reinforcing material is the unidirectional yarn of short glass fiber, and the resin total content is (by weight) between 30%-40%.
The invention has the advantages that: make full use of that glass-reinforced plastic material high-strength light, resistance to chemical corrosion are good, designability can wait characteristics by force, by pultrusion and compression molding mode, go out to have the fiberglass protective plate of plate muscle structure in the workshop continuous batch production, guaranteed the quality of production of fiberglass protective plate product, improved manufacturing efficient, the work of having avoided heavy on-site to make, and shortened the cycle that on-the-spot chimney anticorrosion is constructed greatly, guaranteed the quality of antiseptic project.The fiberglass protective plate has effectively reduced the actual (real) thickness of fiberglass protective plate owing to adopt plate muscle structure simultaneously, has saved material, has further reduced the cost of antiseptic project.
Description of drawings
Fig. 1 is for using fiberglass protective plate corrosion-resistant chimney profile;
Fig. 2 is the fiberglass protective plate structural representation of single structure unit;
Fig. 3 a is one of the fiberglass protective plate structural representation of two a kinds of construction units push pedal;
Fig. 3 b is two fourth of the twelve Earthly Branches plates of the fiberglass protective plate structural representation of two kinds of construction units;
Fig. 4 a hangs the fixed solution schematic diagram for the fiberglass protective plate;
Fig. 4 b is a fiberglass protective plate bolting scheme schematic diagram;
Fig. 5 a is that the fiberglass protective plate is along one of vertical connection diagram of chimney;
Fig. 5 b is that the fiberglass protective plate is along two of the vertical connection diagram of chimney;
Fig. 5 c is that the fiberglass protective plate is along three of the vertical connection diagram of chimney;
Fig. 6 a is that the fiberglass protective plate is along one of chimney hoop connection diagram;
Fig. 6 b is that the fiberglass protective plate is along two of chimney hoop connection diagram;
Fig. 6 c is that the fiberglass protective plate is along three of chimney hoop connection diagram;
Fig. 7 is a fiberglass protective plate cross-sectional view;
Each component names explanation among the figure:
1-chimney emission tube; 2-fiberglass protective plate; The 3-fixing point; 4-vertically connects; The 5-hoop connects; The 6-waling; 7-hoop reinforcement; 8-semicolumn steel cylinder; The 9-conic-insertion-piece; 10-resin solidification glue; The 11-steel inner cylinder; The 12-steel part of taking root; The 13-tap bolt; 14-fiberglass sealing plate; The 15-sealing joint strip; The 16-bellmouth; The 17-socket; The 18-angle steel; The 19-bolt; The 20-sealing strip; 21-negative and positive bayonet socket; The 22-sealing plate; The 23-angle steel; The 24-bolt; The anticorrosion conduction wearing layer of 25-; 26-anticorrosion antiwear layer; The 27-structure sheaf.
The specific embodiment
The present invention proposes a kind of anti-corrosion method that is used for the discharging wet-method desulfurized fume chimney, this method is: according to the concrete planform of chimney emission tube 1 inner surface, design the fiberglass protective plate 2 of reasonable size; (Fig. 4 a), bolting (Fig. 4 b), bonding or welding fixing point 3 be fixed in the inner surface of chimney emission tube 1 by hanging for fiberglass protective plate 2; Fiberglass protective plate 2 is connected 5 along vertical connection 4 of chimney with hoop, thereby form a whole fiberglass protection cylinder that adapts with described chimney inner surface, this fiberglass protection cylinder structure is airtight, can effectively prevent the seepage of flue gas, avoids the corrosion of wet-method desulfurized fume to chimney.
Shown in Fig. 2, Fig. 3 a, Fig. 3 b, fiberglass protective plate 2 is produced by the serialization of fiberglass pultrusion production equipment, have suitable thickness, radian, arc length and syndeton, the waling 6 on it together pultrusion comes out, and cuts according to needed length then.Hoop reinforcement 7 adopts the independent moulding of die press technology for forming, and then bonds post forming with the fiberglass protective plate of pultrusion.
With making the fiberglass protective plate obtain on request, be fixed on chimney steel inner cylinder inner surface by suspension, bolting, bonding or welding manner.
Be illustrated with following dual mode:
A) hang is shown in Fig. 4 a
Suspension connection device mainly is made up of three parts:
I. be welded in the semicolumn steel cylinder 8 on the steel inner cylinder inwall;
Ii. be fixed in the conic-insertion-piece 9 on the fiberglass protective plate;
Iii. fiber glass resin solidifies glue 10.
Each piece protective plate is determined 5-12 suspended and fixed device according to area.According to predetermined position half and half prefabricated cylinder steel cylinder 8 is welded on chimney steel inner cylinder 11 inwalls, conic-insertion-piece on the fiberglass protective plate 9 is inserted in the semicolumn steel cylinder 8, after adjustment position and adjacent plate connect, in semicolumn steel cylinder 8, fill glue 10, make its curing, fiberglass protective plate 2 and chimney steel inner cylinder 11 are linked together.
B) bolt fixed mode is shown in Fig. 4 b
The bolting jockey mainly is made up of three parts:
I. be welded in steel on the chimney steel inner cylinder wall part 12 of taking root;
Ii. tap bolt 13;
Iii. the fiberglass sealing plate 14
Each fiberglass protective plate is determined 5-12 fixing point according to its concrete area.According to predetermined position the prefabricated steel part 12 of taking root is welded on chimney steel inner cylinder 11 inwalls.Protective plate is installed, is adjusted its position it closely is connected with adjacent panels, determine the position after, by rig fiberglass protective plate 2 and the steel part 12 of taking root is punched boring.After the boring, protective plate is fixed with tap bolt 13.Sealing for guaranteeing to connect between plate need paste fiberglass sealing plate 14 at the scene, in this process self tapping connecting bolt 13 is coated on sealing plate 14 times, prevents the corrosion of corrosive medium in the flue gas.
Determined that in the fiberglass protective plate manufacturing process fiberglass protective plate along chimney hoop and syndeton longitudinally, describes as following several syndeton forms:
The fiberglass protective plate is along the vertical connectivity scenario of chimney:
1. scheme one:
Shown in Fig. 5 a, there is " worker " type reinforcement 7 fiberglass protective plate 2 upper and lower end faces, and upper and lower plates connects the back and forms hexagonal cavities, and sealing joint strip 15 as in the cavity, is formed sealing.
The material of sealing joint strip 15 is an ethylene propylene diene rubber, and all hoop sealing joint strips are an integral body on the same horizontal plane, form a sealed circular ring.After lower floor's fiberglass protective plate 2 is all installed, place their top, continue to install the upper strata protective plate then.
2. scheme two:
Shown in Fig. 5 b, there is " worker " type reinforcement 7 fiberglass protective plate 2 upper and lower end faces, and upper and lower plates connects the back and forms hexagonal cavities, and sealing joint strip 15 as in the cavity, is formed sealing.
The material of sealing joint strip 15 is an ethylene propylene diene rubber, and all hoop sealing joint strips are an integral body on the same horizontal plane, form a sealed circular ring.After lower floor's fiberglass protective plate 2 is all installed, place their top, continue to install the upper strata protective plate then.
For further guaranteeing the sealing between plate, the upper and lower end face of fiberglass protective plate is processed as the form of bell and spigot, wherein the lower surface is a bellmouth 16, the upper surface is a socket 17, like this that connector between vertical plate and ring packing adhesive tape 15 is interleaved, the ring packing mouth places the top of connector, and this structure has prevented the seepage of the corrosive liquids that forms on inner wall of stack, has further guaranteed the overall tightness of chimney.The holding of fiberglass protective plate upper and lower end face, socket one-shot forming in process need not secondary operations.
3. scheme three:
Shown in Fig. 5 c, there is " worker " type reinforcement 7 fiberglass protective plate 2 upper and lower end faces, and upper and lower plates connects the back and forms hexagonal cavities, and sealing joint strip 15 as in the cavity, is formed sealing.
The material of sealing joint strip 15 is an ethylene propylene diene rubber, and all hoop sealing joint strips are an integral body on the same horizontal plane, form a sealed circular ring.After lower floor's fiberglass protective plate 2 is all installed, place their top, continue to install the upper strata protective plate then.
For further guaranteeing the sealing between plate, the upper and lower end face of fiberglass protective plate is processed as the form of bell and spigot, wherein the lower surface is a bellmouth 16, the upper surface is a socket 17, like this that connector between vertical plate and ring packing adhesive tape 15 is interleaved, the ring packing mouth places the top of connector, and this structure has prevented the seepage of the corrosive liquids that forms on inner wall of stack, has further guaranteed the overall tightness of chimney.The holding of fiberglass protective plate upper and lower end face, socket one-shot forming in process need not secondary operations.
, place on the fiberglass protective plate upper and lower end face reinforcement 7 as reinforcement material with angle steel 18, connect by bolt 19, the form by mechanical connection further guarantees the sealing that connects between vertical plate and the intensity of connection.
The fiberglass protective plate is along chimney hoop connectivity scenario:
1. scheme one:
Shown in Fig. 6 a, fiberglass protective plate 2 side end faces are negative and positive bayonet socket 21 forms, open seal groove in cloudy mouthful, mosaic seal 20 in the seal groove, and sealing strip material is an ethylene propylene diene rubber.Sealing joint strip is installed in the workshop, need not install additional at the scene, has guaranteed airtight quality and on-the-spot installation rate.
2. scheme two:
Shown in Fig. 6 b, fiberglass protective plate 2 side end faces are negative and positive bayonet socket 21 forms, open seal groove in cloudy mouthful, mosaic seal 20 in the seal groove, and sealing strip material is an ethylene propylene diene rubber.Sealing joint strip 20 is installed in the workshop, need not install additional at the scene, has guaranteed airtight quality and on-the-spot installation rate.
Be the sealing that further guarantees to connect between plate, paste sealing plate at the scene, sealing plate 22 is installed in the wedge-shaped slot, the form of wedge-shaped slot as shown in the figure, this kind structure is interleaved with hoop inter-board interface and longitudinal sealing strip, and paste sealing plate 22 by the scene, further guaranteed the seepage of corrosive liquids to the chimney outside.Wedge-shaped slot forms in the manufacture process of protective plate, need not post forming, and this structure has guaranteed sealing plate coming off in running in the future.
3. scheme three:
Shown in Fig. 6 c, fiberglass protective plate 2 sides are negative and positive bayonet socket 21 forms, open seal groove in cloudy mouthful, mosaic seal 20 in the seal groove, and sealing strip material is an ethylene propylene diene rubber.Sealing joint strip 20 is installed in the workshop, need not install additional at the scene, has guaranteed airtight quality and on-the-spot installation rate.
Be the sealing that further guarantees to connect between plate, paste sealing plate at the scene, sealing plate 22 is installed in the wedge-shaped slot, the form of wedge-shaped slot as shown in the figure, this kind structure is interleaved with hoop inter-board interface and longitudinal sealing strip, and paste sealing plate 22 by the scene, further guaranteed the seepage of corrosive liquids to the chimney outside.Wedge-shaped slot forms in the manufacture process of protective plate, need not post forming, and this structure has guaranteed sealing plate coming off in running in the future.
, place on the stud of fiberglass protective plate two sides as reinforcement material with angle steel 23, connect by bolt 24, as shown in the figure, the form by mechanical connection further guarantees the sealing that connects between vertical plate and the intensity of connection.
Fiberglass protective plate contact fume side is anticorrosion conduction wearing layer 25 as shown in Figure 7, is followed successively by anticorrosion antiwear layer 26, structure sheaf 27 and waling 6 and hoop reinforcement 7 behind the anticorrosion conduction wearing layer 25.
Anticorrosion conduction wearing layer 25 used resin systems are the epoxy vinyl resin, used reinforcing material is cut felt for short, and in resin, be packed into electrically conductive graphite and high-abrasive material carborundum, and the resin total content is (by weight) between 80%-90%, and the thickness of this layer is not less than 0.25mm.
In sum, the invention provides a kind of anti-corrosion method that is applied to the discharging wet-method desulfurized fume chimney, efficiently solve the etching problem of discharging wet-method desulfurized fume chimney, guaranteed the normal operation of chimney, this method has greatly reduced the cost of chimney anticorrosion engineering simultaneously, has good market popularization value.
Claims (15)
1. anti-corrosion method that is applied to the discharging wet-method desulfurized fume chimney is characterized in that: the planform concrete according to the chimney inner surface, design the fiberglass protective plate of reasonable size; The fiberglass protective plate is fixed on the inner surface of chimney emission tube by suspension, bolting, bonding or welding manner; The fiberglass protective plate is along the hoop of chimney and vertically interconnect, thereby form a whole fiberglass protection cylinder that adapts with described chimney inner surface, this fiberglass protection cylinder structure is airtight, can effectively prevent the seepage of flue gas, avoids the corrosion of wet-method desulfurized fume to chimney.
2. method according to claim 1 is characterized in that: the fiberglass protective plate of described reasonable size is the sheet arc, has suitable length, thickness, radian and arc length.
3. method according to claim 1 is characterized in that: the quantity of described fiberglass protective plate is a plurality of.
4. method according to claim 1 is characterized in that: the size of described fiberglass protective plate is all identical.
5. method according to claim 1 is characterized in that: the size of described fiberglass protective plate is inequality.
6. method according to claim 1 is characterized in that: described fiberglass protective plate is a plate muscle structure, and described fiberglass protective plate is provided with vertically and the hoop reinforcement.
7. method according to claim 2 is characterized in that: the length of described fiberglass protective plate is 2-20m; Thickness is 40-70mm (apparent thickness); Radian is between 4-180 °; Arc length is 400-1000mm.
8. method according to claim 6 is characterized in that: described vertically with the hoop reinforcement be shaped as " T " font, " L " type and " worker " font.
9. method according to claim 6 is characterized in that: described fiberglass protective plate and described waling are by the pultrusion molding process one-shot forming; After the independent moulding of hoop reinforcement, with the post forming of described fiberglass protective plate, the hoop reinforcement is a glass-reinforced plastic material again, adopts the mould pressing process moulding, is fixed on the fiberglass protective plate by the mode that bonds.
10. method according to claim 1 is characterized in that: described fiberglass protective plate connects by bayonet socket along the hoop of chimney, opens seal groove in bayonet socket, and rubber blanket is set in the seal groove, guarantees the sealing that connects; Described fiberglass protective plate along chimney vertically, the expansion joint by caoutchouc elasticity sealing joint strip pressuring method or sealing connects.
11. method according to claim 1 is characterized in that: described chimney is to have the telescopic of steel inner cylinder and multitube chimney, and the fiberglass protective plate is by hanging the inner surface that is fixed on steel inner cylinder with bolted mode.
12. method according to claim 1 is characterized in that: described chimney is a steel stack, and the fiberglass protective plate is fixed on the steel stack inner surface by hanging with bolted mode.
13. method according to claim 1 is characterized in that: described chimney is a monotubular formula reinforced concrete chimney, and the fiberglass protective plate hangs on the bracket on the reinforced concrete chimney inwall by suspension arrangement, and the expansion joint by sealing connects herein.
14. method according to claim 1 is characterized in that: described fiberglass protective plate contact fume side is anticorrosion conduction wearing layer, is followed successively by anticorrosion antiwear layer, structure sheaf and reinforcement behind the anticorrosion conduction wearing layer.The used resin system of described anticorrosion conduction wearing layer is the epoxy vinyl resin, used reinforcing material is cut felt for short, and in resin, be packed into electrically conductive graphite and high-abrasive material carborundum, and the resin total content is (by weight) between 80%-90%, and the thickness of this layer is not less than 0.25mm; The used resin system of described anticorrosion antiwear layer is the epoxy vinyl resin, and used reinforcing material is an alkali-free glass fibre loop bonding felt, and the resin total content is (by weight) between 55%-75%, and the thickness of this layer is not less than 1.0mm; The used resin system of described structure sheaf is the epoxy vinyl resin, and used reinforcing material is the unidirectional yarn of glass fibre, and the resin total content is (by weight) between 30%-40%, and the thickness of this layer is not less than 5.0mm; The used resin system of described reinforcement is the epoxy vinyl resin, and used reinforcing material is the unidirectional yarn of short glass fiber, and the resin total content is (by weight) between 30%-40%.
15. according to the whole fiberglass protection cylinder of the resulting assembly type of the arbitrary method of claim 1-14.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269417A (en) * | 2011-08-09 | 2011-12-07 | 张蕊 | Anticorrosive chimney and anticorrosive method for chimney |
| CN102979351A (en) * | 2012-12-03 | 2013-03-20 | 刘桂荣 | Method for corrosion resistance of rigid and flexible type composite integral casting material inner lining of wet chimney of thermal power plant |
| CN103388827A (en) * | 2013-07-26 | 2013-11-13 | 西安华捷奥海新材料有限公司 | Nanofiber heavy-duty anticorrosive composite material and application thereof in wet desulfurization concrete chimney |
| CN103924819A (en) * | 2014-04-03 | 2014-07-16 | 李芝春 | Flame-retardant and anticorrosion wet chimney with glass fiber reinforced plastic structure for thermal power plant |
| CN103982079A (en) * | 2012-09-13 | 2014-08-13 | 成都龙之泉科技股份有限公司 | Construction method for anticorrosion device of thermal power chimney |
| CN104406181A (en) * | 2014-11-25 | 2015-03-11 | 湖南天通无腐烟囱工程有限公司 | Thermal insulating layer pressurizing corrosion-resistant chimney |
| CN104406182A (en) * | 2014-11-25 | 2015-03-11 | 湖南天通无腐烟囱工程有限公司 | Thermal insulating layer heating and pressurizing corrosion-resistant chimney |
| CN106427105A (en) * | 2016-08-23 | 2017-02-22 | 林永志 | Power plant chimney inner wall anti-corrosion and anti-seepage lining, and method for realizing chimney on-site mounting with vertical overturning method |
| CN107763647A (en) * | 2017-11-02 | 2018-03-06 | 晶辰（淄博）环保科技有限公司 | Chimney protective lining and its manufacture method |
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