CN102500525A - Spray coating method of anti-corrosive paint on inner wall of fire tube - Google Patents
Spray coating method of anti-corrosive paint on inner wall of fire tube Download PDFInfo
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- CN102500525A CN102500525A CN2011103104564A CN201110310456A CN102500525A CN 102500525 A CN102500525 A CN 102500525A CN 2011103104564 A CN2011103104564 A CN 2011103104564A CN 201110310456 A CN201110310456 A CN 201110310456A CN 102500525 A CN102500525 A CN 102500525A
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Abstract
The invention provides a spray coating method of an anti-corrosive paint on the inner wall of a fire tube. The spray coating method comprises the following steps of: (1) installing a fan at one end of the fire tube, and starting the fan to control the air speed in the fire tube so as to remove impurities inside the fire tube; and (2) ejecting or perfusing paint to the fire tube from the other end, sucking the paint by the fan, and throwing onto the inner wall of the fire tube so as to form an anti-corrosive layer, wherein the spray coating of the paint sequentially comprises the spray coating of primer, intermediate paint and finishing coat, drying is carried out after each layer of paint is spray-coated, and the air speed in the fire tube is controlled by the fan during the spray coating process, so as to finish the spray coating of anti-corrosive paint on the inner wall of the fire tube. The spray coating method provided by the invention has the characteristics of simplicity in operation, rapidness and safety, has good anticorrosive effect, and can greatly save construction time and fund investment for anticorrosion of the inner wall of the fire tube.
Description
Technical field
The present invention relates to coating spraying technical field, specially refer to and be applicable to the big smoke pipe inwall of difficulty of construction is carried out a kind of simple and effective paint spraying method of degree of depth corrosion-resistant.
Background technology
In the boiler fired coal process, can produce a lot of corrosive gas, steam and other impurity.When these flue gases pass through, can produce corrosiveness to smoke pipe, and it is serious more to arrive back corrosion situation more from smoke pipe; This mainly is because flowing along with flue gas; Temperature reduces gradually, can condensation go out acid solution, and acid solution is along with flue gas is pushed ahead with certain speed along the smoke pipe diapire; So just the smoke pipe diapire has been formed erosion corrosion, thereby quickened destruction smoke pipe.A lot of smoke pipes adopt stainless steel as material; Though have very strong corrosion resistance; But flue gas has certain temperature, and complicated component corrosivity is strong and be prone to form erosion corrosion, under long-time operating position; Corrosion resistant plate is the attenuation even the perforation that is corroded slowly, therefore needs regularly smoke pipe to be safeguarded processing.General maintaining method comprises removable parts smoke pipe, outer wall mending-leakage, inwall touch-up paint, and still, for the pipeline of having built up, such method for maintaining is all consuming time expensive too many, and implements difficult.
Smoke pipe is as a passage of flue gas; It will extend to different places along with processing procedure such as the dedusting of flue gas, desulphurization denitration, therefore can form very complicated pipeline configuration, is not straight line; Some spray guns that spray automatically can not import, and this has just strengthened the difficulty of construction of inwall japanning.For example long vertical section is connecting the flue of long horizontal segment and multiple bending sections branch, when externally import department uses the high-pressure spray gun spraying merely, because range is limited, can only handle one section smoke pipe of import department; And in the people enters into smoke pipe when construction (smoke pipe diameter＞600mm),, can increase the engineering time simultaneously greatly, and need to drop into huge because the inner space sealing making construction have great risk.In addition, most of smoke pipe is all maked somebody a mere figurehead, and it is vertical also having some, and a lot of paint company to carry out inner wall anti-corrosive be to be that safety rope gets into smoke pipe then and implements to brush or spraying mostly, have very big danger like this.At first, if suspending construction person's safety rope goes wrong, the constructor is extremely dangerous.Secondly, when the constructor got into pipeline construction, if do not allow narrow and small pipeline space to maintain enough fresh air circulations, the constructor was easy to suffocate.In addition,, especially in pipeline, spray, be easy to let the constructor suffocate even poison with spray gun because the organic solvent volatility in the paint is very strong and have excitant.
Summary of the invention
The objective of the invention is to overcome the shortcoming that exists in the prior art; The spraying method that provides a kind of simple, effective, safe smoke pipe inner wall anti-corrosive to paint; Can implement to add the benefit antifouling paint to the inwall that builds up pipeline, especially can solve some smoke pipe inner wall anti-corrosive spraying difficult problems big like difficulty of construction such as suspended pipings.
The object of the invention is realized through following technical proposals:
A kind of spraying method of smoke pipe inner wall anti-corrosive paint; Through regulating suitable wind speed, bring smoke pipe into to high port spraying paint of spraying or inject, and will paint and be coated on uniformly on the smoke pipe inwall; And it is dry to quicken paint; With this simply, easily and fast method sprays anticorrosive paint in smoke pipe, form an effective anticorrosive coat, especially the thick fine and close anticorrosion band of one deck is formed on the bottom in smoke pipe; Stop metal to contact, prevent smoke pipe corrosion attenuation even perforation effectively with the sour water of air and condensation.The number of plies of corrosion resistant coating is looked anticorrosion degree and is decided, and the general anticorrosion needs of severe spray priming paint, intermediate coat and three kinds of anticorrosive paints of finish paint successively.Specifically comprise the steps:
(1) at smoke pipe one end blower fan is installed, is opened wind speed in the blower fan control smoke pipe, remove the foreign material in the smoke pipe; Concrete operations are to open blower fan, and wind speed is transferred to 10～20m/s operation, 20～45min, and purpose is to remove the ponding in some residues of inner-walls of duct and the air-dry pipe, for spraying is prepared;
(2) in pipe, spray or perfusion paint from the smoke pipe other end; Paint is sucked to get rid of by blower fan and on inside pipe wall, forms anticorrosive coat; The spraying of said paint is followed successively by the spraying of priming paint, intermediate coat and finish paint, after every layer of lacquer spraying, all wants dry; Control wind speed in the smoke pipe with blower fan during the spraying, thereby accomplish the spraying of smoke pipe inner wall anti-corrosive paint.
Said blower fan is installed in the lower end of smoke pipe, and is provided with the detection valve in the smoke pipe bottom near blower fan one end, is used to detect the spraying effect of paint.
The main component of the said priming paint of step (2), intermediate coat and finish paint is respectively vinylester resin, vinylester resin glass flake, acrylic outdoor enamel.
Said priming paint comprises heat-resistance type vinylester resin lacquer base, aqueous epoxy curing agent and trimerization DMP-30 promoter, and the mass ratio of three components is 20: 0.2: 0.15.
Said intermediate coat is the mixing with 50: 1 mass ratioes of heat-resistance type vinylester resin glass flake lacquer base and aqueous epoxy curing agent.
Said finish paint is that acrylic outdoor enamel lacquer base and aqueous epoxy curing agent are by 8: 1.5 mixing of mass ratio.
Said priming paint, intermediate coat and finish paint all add the epoxide diluent of mass fraction more than 20% in preparation, avoid painting too thickness and spray inhomogeneous.
Said priming paint is divided into precoating and overcoating, and precoating sprays with High Pressure Gun, and wind speed is 5～15m/s during spraying, and paint can be sprayed onto on the tube wall equably; Stretch into pipe inspection paint with the long rod that is tied with white gauze and whether be drawn onto pipe end detecting the valve place, if not then transfer big rotation speed of fan or transfer carefully and spray.Be to be covered by less paint droplet with spray gun in order to ensure inside pipe wall before, better anticorrosion.Next the perfusion of overcoating employing flexible pipe further transfers wind speed greatly, and (10～20m/s) inject, and the paint of injection is got rid of the thicker fine and close anti-corrosion primer layer of formation one deck on inside pipe wall by the blower fan suction with big flow at high port with flexible pipe in employing.Operation a period of time just scrapes at detection valve place with the long rod that teases white gauze and gets tube wall, and inspection detects the paint thickness of valve place inner-walls of duct, and reaching needs the thickness of anticorrosion degree just can stop to spray paint.And concrete flow of paint, blower fan wind speed and spray time also will combine material elementses such as on-the-spot pipe range, caliber, stringing complexity to determine.
The wind speed of removal of impurities is 10～20m/s described in the said step (1); The wind speed of the spraying of intermediate coat and finish paint described in the step (2) is 10～25m/s; Dry wind speed is 0.5～5m/s, and drying time is by the type decided of priming paint, but because the organic solvent that the exhausting of blower fan helps painting volatilization, thus its drying time than with reference to drying time short.
Said epoxide diluent is a kind of in xylenes, toluene, acetone, ethylenediamine, the dibutyl carboxylic acid.
Said aqueous epoxy curing agent is a kind of in imidazoles, diethylenetriamine, polyamide 6 50, HHPA, methyl tetrahydro phthalic anhydride, the grass acid anhydrides.
The present invention has following advantage and beneficial effect with respect to prior art:
(1) the present invention compared with prior art, simple to operate, and can shorten the engineering time greatly.This method only need be controlled wind speed and paint well, and with respect to the brushing or the spraying of manual work, this method is easy to operate simple, and because the effect of blower fan, the drying that can accelerate to paint is arranged.Engineering time of the present invention in addition is not as good as 1/4 of the conventional method required time.
(2) the present invention is convenient carries out inner wall anti-corrosive to the big pipeline of some difficulty of construction.
(3) the present invention can carry out inwall and strengthens anticorrosionly building up pipeline, and reduces cost greatly.
(4) the present invention can make construction become safer.The present invention need not the constructor and crawls into construction in the pipeline, only needs to inject at pipeline outer control blower fan and paint, almost has no danger.
(5) the present invention is more suitable for the anticorrosion of heavy corrosion flue.Corrosive fume mainly is because flue gas condensing becomes acid solution to be deposited on duct bottom to the anticorrosion of pipeline, adds the sweep of gases acid solution, has aggravated the reaction of corrosive substance and metallic conduit.So we find that nearly all smoke pipe all is to begin corrosion earlier from the bottom, for the flue gas of a lot of severe corrosives,, can the bottom corrosion of stainless smoke pipe be worn like power-plant flue gas, can see that the corrosivity of acid solution under sweep of gases is strong completely.And the present invention drives the paint drop with the blower fan wind speed to get into pipeline enforcement corrosion-resistant; When the paint drop that injects is bigger; Because the gravity effect, the paint film that duct bottom forms can be local thick more a lot of than other, and this just in time can more effectively stop contacting of acid solution and air and metal; Can implement pipeline corrosion protection effectively, so the present invention is well suited for the anticorrosion of heavy corrosion flue.
Description of drawings
Fig. 1 is the sketch map of spraying method of the present invention;
1: blower fan 2: low port 3: ball valve 4: abridged intermediate conduit 5: high port 6: paint injection place.
The specific embodiment
Below in conjunction with embodiment the present invention is described further, but embodiment of the present invention are not limited thereto.
Embodiment 1
This embodiment to certain desulfurizing tower of electric power plant after the pilot-plant flue, in the flue gas heavy corrosion composition be mainly NO (100～500ppm), NO
2(1～30ppm), SO
2(10～700ppm), in addition, oxygen content is 5%～12% in the flue gas, and the cigarette temperature is 30～120 ℃.What select for use during this smoke pipe design and construction is 304 stainless steel materials, and inside and outside wall does not all adopt the anti-corrosion spray measure because the washing away of condensation acid solution, used seven months after, find smoke pipe bottom attenuation, seriously corroded is so need to adopt the inner wall anti-corrosive measure to remedy.This smoke pipe length overall is 45m, and bore is 780mm, and all pipelines are maked somebody a mere figurehead entirely, and the difference in height of pipe ends mouth is up to 19m, and pipeline has the bending at 4 right angles, and concrete embodiment is described below:
(1) because this smoke pipe low port 2 just had air-introduced machine originally, and power is enough big, so only need the ball valve 3 of an one-inch of duct bottom welding at 1m place before blower fan.
(2) open blower fan 1, wind speed is adjusted to about 15m/s, operation 30min, with the residual moisture in the smoke pipe, dust, removals such as the little grains of sand are follow-up preparation of construction.Configure priming paint during this period; This priming paint comprises three components; SPE904-P heat-resistance type vinylester resin lacquer base, diethylenetriamine curing agent and trimerization DMP-30 promoter; Mass ratio is 20: 0.2: 0.15, has better flowability in order to make paint, and the adding mass percent is 20% dibutyl carboxylic acid diluent.
(3) the blower fan wind speed is transferred to about 7m/s; Spray priming paint with spray gun from port 5 earlier; The flow of paint of spray gun is controlled at about 500mL/min, and air flow control puts in inspection with the long rod that is tied with gauze from ball valve 3 about 100L/min; Find to occupy on the white gauze paint mist and drip, explain that wind speed and gun spraying size is fit to.Behind the spraying 1h wind speed is transferred to about 15m/s, use flexible pipe instead and inject priming paint from high port 5, flow of paint is 2L/min; Behind the 20min, open ball valve 3, scrape the smoke pipe inwall with the long rod that is tied with gauze; Find inside pipe wall with the certain thickness paint film of one deck, the priming paint spraying finishes.
(4) wind speed is reduced to 4m/s, quickens the priming paint drying, probably be 3h drying time, when the fast drying of priming paint is good, begins to allocate intermediate coat.This intermediate coat is two components, and SPE904-M heat-resistance type vinylester resin glass flake lacquer base and diethylenetriamine curing agent mix with 50: 1 mass ratioes, and the epoxide diluent that adds mass fraction 20% equally improves the flowability of paint.
(5) wind speed is recalled to 15m/s again, inject intermediate coat at port 5 places with the flow of 2L/min, after the 25min, middle the paint film of adequate thickness has been found at the ball valve 3 places inspection of using the same method, and intermediate coat sprays and finishes.
(6) the blower fan wind speed is transferred to 4m/s to the intermediate coat drying; Be 2.5h drying time; Allotment finish paint when the fast drying of intermediate coat finishes; Finish paint also is two components, adopts B04-12 acrylic outdoor enamel lacquer base and diethylenetriamine curing agent to press mass ratio and mixes at 8: 1.5, and the epoxide diluent (dibutyl carboxylic acid) that adds mass fraction 20% equally improves the flowability of paint.
(7) wind speed is adjusted to 15m/s, with the flow injection finish paint of 1.5L/min, discovery finds to have the finish paint of adequate thickness behind the 20min at one-inch ball valve 3 places, stops finish paint and injects.
(8) wind speed is transferred to 4m/s once more, make paint dry completely, the organic solvent that paints behind the operation 5h almost volatilizees and has finished, and turns off blower fan by its natural air drying.
Embodiment 2
This embodiment is to the flue behind certain steel plant's desulfurizing tower, in the flue gas heavy corrosion composition be mainly NO (150～240ppm), NO
2(1～10ppm), SO
2(20～50ppm), in addition, oxygen content is 5%～10% in the flue gas, and the cigarette temperature is 50～80 ℃.What select for use during this smoke pipe design and construction is 316 stainless steel materials, and inside and outside wall does not all adopt the anti-corrosion spray measure, use the time more than a year after smoke pipe have corrosion phenomenon in various degree everywhere.This section smoke pipe length overall is 72m, and bore is 600mm, and section of tubing is maked somebody a mere figurehead, and the difference in height of pipe ends mouth reaches 5m, and the 90 ° of bendings in two places are arranged in the pipeline.Because the material of this pipeline own is better, the degree that is corroded is not very too serious, thus this time anticorrosion adopt priming paint and finish paint two-layer anticorrosion.Concrete embodiment is described below:
(1) the low end of this smoke pipe is equipped with high-power air-introduced machine, and the duct bottom at the preceding 1m place of blower fan is welded with one three cun ball valve.
(2) open blower fan, wind speed is adjusted to about 20m/s, operation 30min, with the residual moisture in the smoke pipe, dust, removals such as the little grains of sand are follow-up preparation of construction.Configure priming paint during this period, this priming paint batching is with embodiment 1.
(3) the blower fan wind speed is transferred to about 10m/s, earlier spray priming paint from high port 5, the flow of paint of spray gun is controlled at about 500mL/min with spray gun; Air flow control goes out to detect the paint droplet with the long rod that teases gauze at three cun ball valves about 100L/min, explain that wind speed is suitable with spraying; Spray after the 1h, wind speed is transferred to about 15m/s, use flexible pipe instead and inject priming paint from high port 5; Flow of paint is 2L/min; Behind the 20min, go out to detect the paint film that tube wall has adequate thickness at ball valve 3, stop the priming paint spraying with the long rod that is tied with gauze.
(4) wind speed is reduced to 5m/s, quickens the priming paint drying, probably be 2h drying time, when the fast drying of priming paint is good, begins to allocate intermediate coat, and intermediate coat is prepared burden with embodiment 1.
(5) wind speed is recalled to 15m/s again, inject intermediate coat at high port 5 places with the flow of 2L/min, after the 25min, middle the paint film of adequate thickness has been found at the ball valve 3 places inspection of using the same method, and intermediate coat sprays and finishes.
(6) the blower fan wind speed is transferred to 3m/s to the intermediate coat drying, be 3h drying time, allotment finish paint when the fast drying of intermediate coat finishes, and finish paint is prepared burden with embodiment 1.
(7) wind speed is adjusted to 25m/s, injects finish paint, find the finish paint paint film of adequate thickness behind the 25min at the ball valve place, stop finish paint and inject with the flow of 1.5L/min.
(8) wind speed is transferred to 4m/s once more, make paint dry completely, the organic solvent that paints behind the operation 5h almost volatilizees and has finished, and turns off blower fan by its natural air drying.
Embodiment 3
This embodiment is to one section flue behind certain chemical plant toxic emission deduster, in the flue gas heavy corrosion composition be mainly NOx (200～500ppm), SO
2(150～300ppm), NH
3(300～700ppm), hydrocarbon (more than the 1000ppm).In addition, oxygen content is 5%～10% in the flue gas, and the cigarette temperature is 50～100 ℃.What select for use during this smoke pipe design and construction is 304 stainless steel materials; Inside and outside wall all is sprayed with one deck japanning; Because the washing away of condensate corrosion liquid, used a period of time after, find that smoke pipe bottom coating bubbles serious; There is corrosion phenomenon in various degree everywhere in steel pipe, so need to adopt the inner wall anti-corrosive measure to safeguard.This section smoke pipe length overall is 30m, and bore is 200mm, and pipeline mainly is attached on wall or the ground because flue gas corrosion property is very strong, so to add prime, intermediate coat and three layers of corrosion-inhibiting coating of finish paint, concrete embodiment is described below:
(1) this smoke pipe low port 2 is equipped with a blower fan, and the duct bottom at the preceding 1m place of blower fan is welded with the ball valve 3 of an one-inch.
(2) open blower fan, wind speed is adjusted to about 15m/s, operation 30min, with the residual moisture in the smoke pipe, dust, removals such as the little grains of sand are follow-up preparation of construction.Configure priming paint during this period, priming paint is prepared burden with embodiment 1.
(3) the blower fan wind speed is transferred to about 5m/s, earlier spray priming paint from port 5, the flow of paint of spray gun is controlled at about 200mL/min with spray gun; Air flow control is checked through the paint droplet at ball valve 5 places with the long rod that is tied with gauze about 50L/min, explain that wind speed is suitable with spraying; Spray after the 45min, wind speed is transferred to about 10m/s, use flexible pipe instead and inject priming paint from high port 5; Flow of paint is 1L/min; Behind the 20min, be checked through the paint film that inside pipe wall has adequate thickness with the long rod that is tied with gauze again, stop priming paint and inject.
(4) wind speed is reduced to 3m/s, quickens the priming paint drying, probably be 3h drying time, when the fast drying of priming paint is good, begins to allocate intermediate coat, and intermediate coat is prepared burden with embodiment 1.
(5) wind speed is recalled to 10m/s again, inject SPE904-M heat-resistance type vinylester resin glass flake at high port 5 places with the flow of 1L/min, after the 25min, inspection finds that inside pipe wall intermediate coat paint film reaches adequate thickness, stops intermediate coat and injects at ball valve 3 places.
(6) the blower fan wind speed is transferred to 3m/s to the intermediate coat drying, be 2.5h drying time, allotment finish paint when the fast drying of intermediate coat finishes, and finish paint is prepared burden with embodiment 1.
(7) wind speed is adjusted to 10m/s, injects finish paint with the flow of 1L/min, detect the finish paint film thickness behind the 20min at ball valve 3 places enough, stops finish paint and inject.
(8) wind speed is transferred to 3m/s once more, make paint dry completely, the organic solvent that paints behind the operation 4h almost volatilizees and has finished, and turns off blower fan by its natural air drying.
Claims (10)
1. the spraying method of a smoke pipe inner wall anti-corrosive paint is characterized in that, comprises the steps:
(1) at smoke pipe one end blower fan is installed, is opened wind speed in the blower fan control smoke pipe, remove the foreign material in the smoke pipe;
(2) in pipe, spray or perfusion paint from the smoke pipe other end; Paint is sucked to get rid of by blower fan and on inside pipe wall, forms anticorrosive coat; The spraying of said paint is followed successively by the spraying of priming paint, intermediate coat and finish paint, after every layer of lacquer spraying, all wants dry; Control wind speed in the smoke pipe with blower fan during the spraying, thereby accomplish the spraying of smoke pipe inner wall anti-corrosive paint.
2. spraying method according to claim 1 is characterized in that, said priming paint, intermediate coat and finish paint all add the epoxide diluent of mass fraction more than 20% in preparation.
3. spraying method according to claim 2 is characterized in that said priming paint is divided into precoating and overcoating, and precoating sprays with High Pressure Gun, and wind speed is 5～15m/s during spraying; The flexible pipe perfusion is adopted in overcoating, and wind speed is 10～20m/s during perfusion.
4. spraying method according to claim 3 is characterized in that, the wind speed of removal of impurities is 10～20m/s described in the said step (1); The wind speed of the spraying of intermediate coat and finish paint described in the step (2) is 10～25m/s; Dry wind speed is 0.5～5m/s.
5. spraying method according to claim 4 is characterized in that, said blower fan is installed in the lower end of smoke pipe; And bottom the smoke pipe of blower fan one end, be provided with the detection valve.
6. according to any described spraying method of claim 1～5, it is characterized in that the main component of the said priming paint of step (2), intermediate coat and finish paint is respectively vinylester resin, vinylester resin glass flake, acrylic outdoor enamel.
7. spraying method according to claim 6 is characterized in that, said priming paint comprises heat-resistance type vinylester resin lacquer base, aqueous epoxy curing agent and trimerization DMP-30 promoter, and the mass ratio of three components is 20: 0.2: 0.15.
8. spraying method according to claim 7 is characterized in that, said intermediate coat is the mixing with 50: 1 mass ratioes of heat-resistance type vinylester resin glass flake lacquer base and aqueous epoxy curing agent.
9. spraying method according to claim 8 is characterized in that, said finish paint is that acrylic outdoor enamel lacquer base and aqueous epoxy curing agent are by 8: 1.5 mixing of mass ratio.
10. spraying method according to claim 9 is characterized in that, said epoxide diluent is a kind of in xylenes, toluene, acetone, ethylenediamine, the dibutyl carboxylic acid;
Said aqueous epoxy curing agent is a kind of in imidazoles, diethylenetriamine, polyamide 6 50, HHPA, methyl tetrahydro phthalic anhydride, the grass acid anhydrides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110310456.4A CN102500525B (en) | 2011-09-30 | 2011-09-30 | Spray coating method of anti-corrosive paint on inner wall of fire tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110310456.4A CN102500525B (en) | 2011-09-30 | 2011-09-30 | Spray coating method of anti-corrosive paint on inner wall of fire tube |
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|---|---|
| CN102500525A true CN102500525A (en) | 2012-06-20 |
| CN102500525B CN102500525B (en) | 2014-05-07 |
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|---|---|---|---|
| CN201110310456.4A Expired - Fee Related CN102500525B (en) | 2011-09-30 | 2011-09-30 | Spray coating method of anti-corrosive paint on inner wall of fire tube |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085146A (en) * | 2016-07-29 | 2016-11-09 | 无锡信大气象传感网科技有限公司 | A kind of chimney climbing ladder antifouling paint and preparation method thereof |
| CN108080236A (en) * | 2017-11-30 | 2018-05-29 | 安徽雷萨重工机械有限公司 | A kind of method for promoting desulfurizing dust-collector shell corrosion resistance |
| CN110302948A (en) * | 2019-06-28 | 2019-10-08 | 中船黄埔文冲船舶有限公司 | A kind of underwater coating construction method of ship |
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|---|---|---|---|---|
| CN1401438A (en) * | 2002-09-30 | 2003-03-12 | 姜宜川 | Apparatus and process for spraying inner wall of electric heating water supply steel-plastic composite pipe |
| CN101168976A (en) * | 2007-11-21 | 2008-04-30 | 上纬（上海）精细化工有限公司 | Antisepsis method for fire coal tail gas funnel |
| CN101823065A (en) * | 2010-04-30 | 2010-09-08 | 苏州德华机械设备有限公司 | Device for descaling and derusting for pipeline and coating to form anti-corrosion coat and application method |
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2011
- 2011-09-30 CN CN201110310456.4A patent/CN102500525B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401438A (en) * | 2002-09-30 | 2003-03-12 | 姜宜川 | Apparatus and process for spraying inner wall of electric heating water supply steel-plastic composite pipe |
| CN101168976A (en) * | 2007-11-21 | 2008-04-30 | 上纬（上海）精细化工有限公司 | Antisepsis method for fire coal tail gas funnel |
| CN101823065A (en) * | 2010-04-30 | 2010-09-08 | 苏州德华机械设备有限公司 | Device for descaling and derusting for pipeline and coating to form anti-corrosion coat and application method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085146A (en) * | 2016-07-29 | 2016-11-09 | 无锡信大气象传感网科技有限公司 | A kind of chimney climbing ladder antifouling paint and preparation method thereof |
| CN108080236A (en) * | 2017-11-30 | 2018-05-29 | 安徽雷萨重工机械有限公司 | A kind of method for promoting desulfurizing dust-collector shell corrosion resistance |
| CN108080236B (en) * | 2017-11-30 | 2021-12-21 | 蚌埠青果科技服务有限公司 | Method for improving corrosion resistance of desulfurization dust remover shell |
| CN110302948A (en) * | 2019-06-28 | 2019-10-08 | 中船黄埔文冲船舶有限公司 | A kind of underwater coating construction method of ship |
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| Publication number | Publication date |
|---|---|
| CN102500525B (en) | 2014-05-07 |
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