CN109652789A - A kind of processing method on boiler inner wall surface - Google Patents
A kind of processing method on boiler inner wall surface Download PDFInfo
- Publication number
- CN109652789A CN109652789A CN201910158786.2A CN201910158786A CN109652789A CN 109652789 A CN109652789 A CN 109652789A CN 201910158786 A CN201910158786 A CN 201910158786A CN 109652789 A CN109652789 A CN 109652789A
- Authority
- CN
- China
- Prior art keywords
- boiler
- solution
- temperature
- added
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a kind of processing methods on boiler inner wall surface, the specific steps are as follows: is washed using the mixed liquor of 12 ~ 15% sodium metaphosphate and 3 ~ 6% PA 800K, 8 ~ 10% Triaethanolamine to boiler；Again using 15% dilute hydrochloric acid and the mixed liquor of 0.1% thiocarbamide, temperature is 40~60 DEG C, is washed to boiler；Then above-mentioned boiler is added in the mixed solution of ammonium hydrogen carbonate and barium chloride, impregnates 1~2min；Heating after having impregnated after drying, when boiler temperature is 110 ~ 130 DEG C, is added in metatitanic acid zinc solution, zinc titanate solution temperature is 435 ~ 470 DEG C, impregnates 0.5 ~ 1.5min, and then above-mentioned boiler is added in passivating solution and is passivated, it adds in 40 ~ 45 DEG C of water, heating evaporation.Boiler inner surface is handled using method of the present invention, the thermal wear and flatness of boiler can be increased, and inhibits the generation of corrosion.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a kind of processing method on boiler inner wall surface.
Background technique
The main operational principle of boiler is a kind of waste heat biography using in the thermal energy discharged after fuel combustion or industrial production
The water in container is passed, the heat power equipment of temperature required for reaching water or certain pressure steam, strong with fuel tolerance,
The advantages that high combustion efficiency, but due to equipment design, manufacture, installation and operating technology etc. are various, boiler exists
There can be the problems such as furnace body surface thermal wear in actual motion, it is along with entire burning and diabatic process.In fuel combustion
When, fuel particle can all make the surface thermal wear of furnace body tight since the effect of gravity is ceaselessly flowed in the combustion chamber
Weight, while there is also certain inhomogeneities for wash away angle and direction of the fuel particle on furnace body face, not so as to cause furnace body
Only bottom end thermal wear is serious, and sidewall of the furnace body also has a degree of thermal wear.
In the prior art, the resistance to heat treatment of boiler surfaces be usually furnace body surface coat high-temperaure coating, but
In practical operation, since coating is low with the bond strength on furnace body surface, coating the washing away in fuel particle on furnace body surface
Easy spalling failure under effect, and then need regularly to carry out to check the applying coating with many times, cost input is big.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of processing method, can be boiler surface have preferably by
Hot wear and smoothness.
Technical solution: the present invention provides a kind of methods for making boiler surfaces light, the specific steps are as follows:
Boiler is carried out using the mixed liquor of 12 ~ 15% sodium metaphosphate and 3 ~ 6% PA 800K, 8 ~ 10% Triaethanolamine
Washing；Again using 15% dilute hydrochloric acid and the mixed liquor of 0.1% thiocarbamide, temperature is 40~60 DEG C, is washed to boiler；This step
In rapid, it is bad to will cause coating adhesion if condition control is bad, does not plate zinc or Zinc Scaling, therefore, mixed liquor
Preferably 55 DEG C of temperature.
Then above-mentioned boiler is added in the mixed solution of ammonium hydrogen carbonate and barium chloride, impregnates 1~2min；Further
Research is found: NH in the mixed solution of the ammonium hydrogen carbonate and barium chloride4The concentration of Cl is 100 ~ 150g/L, ZnCl2Concentration
For 150 ~ 180g/L, and effect is more preferable when temperature is 70~85 DEG C, and there is workpiece certain activity to avoid two before being positively retained at immersion plating
Secondary oxidation, to enhance coating in conjunction with matrix.
Heating after having impregnated after drying, when boiler temperature is 110 ~ 130 DEG C, is added in metatitanic acid zinc solution, zinc titanate is molten
Liquid temperature is 435 ~ 470 DEG C, impregnates 0.5 ~ 1.5min, by metatitanic acid zinc solution heating evaporation, heating evaporation temperature is generally 120
Degree.During this, the temperature of metatitanic acid zinc solution is extremely important, and temperature is too low, metatitanic acid zinc solution poor fluidity, plates thickness and not
Uniformly, it is also easy to produce sagging, presentation quality is poor；Temperature is high, and metatitanic acid zinc solution good fluidity, metatitanic acid zinc solution is easily detached from workpiece, subtracts
Few sagging and elephant skin phenomenon occur, and adhesive force is strong, and coating is thin, and appearance is good, high production efficiency；But temperature is excessively high, workpiece and zinc pot
Iron loss is serious, generates a large amount of cadmias, influences zinc-impregnating layer quality and corrosion is be easy to cause to keep surface color ugly, and zinc consumption is high.Cause
This, preferably 435 ~ 445 DEG C of zinc titanate solution temperature.The zinc titanate solution concentration is 60 ~ 80g/L.
Then above-mentioned boiler is added in passivating solution and is passivated, the passivating solution is the dichromic acid that concentration is 80~100g/L
The mixed solution for the sulfuric acid that potassium and concentration are 3~4ml/L.Boiler surfaces weather-resistant performance can be improved in the process, reduces
Or extend white rust time of occurrence, keep coating that there is good appearance.It adds in 40 ~ 45 DEG C of water, heating evaporation.
The utility model has the advantages that using method of the present invention handle boiler surfaces, can increase boiler thermal wear and
Flatness, and inhibit the generation of corrosion.
Specific embodiment:
Embodiment 1
Boiler is washed using the mixed liquor of 12% sodium metaphosphate and 3% PA 800K, 8% Triaethanolamine, makes pot
Until furnace is flooded profit completely.Then using 15% dilute hydrochloric acid and the mixed liquor of 0.1% thiocarbamide, boiler is washed, is mixed
Liquid temperature 60 C.
(NH in the mixed solution of ammonium hydrogen carbonate and barium chloride is added in above-mentioned boiler4Cl concentration 150g/L, ZnCl2Concentration
150g/L), temperature is 70 DEG C, soaking time 1min.
After having impregnated, heating, after drying, when boiler temperature is 120 DEG C, into metatitanic acid zinc solution, zinc titanate is molten
Liquid temperature is 450 DEG C, impregnates 0.5min, by metatitanic acid zinc solution heating evaporation, heating evaporation temperature is generally 120 degree.
Then above-mentioned boiler is added in passivating solution and is passivated, passivating solution is the potassium bichromate and 3~4ml/L of 80~100g/L
The mixed solution of sulfuric acid.Then it is added in 40 DEG C of water, heating evaporation.?.
Treated boiler inner wall shiny appearance, careful, no sag, elephant skin phenomenon.0.16 μm of surface roughness Ra.200
Thermal wear rate 4cm at DEG C3/ m, hydrochloric acid infiltration loss 0.01% in 48 hours.
Embodiment 2
Boiler is washed using the mixed liquor of 15% sodium metaphosphate and 6% PA 800K, 8% Triaethanolamine, makes pot
Until furnace is flooded profit completely.Then using 13% dilute hydrochloric acid and the mixed liquor of 0.1% thiocarbamide, boiler is washed, is mixed
40 DEG C of liquid temperature.
(NH in the mixed solution of ammonium hydrogen carbonate and barium chloride is added in above-mentioned boiler4Cl concentration 150g/L, ZnCl2Concentration
150g/L), temperature is 85 DEG C, soaking time 2min.
After having impregnated, heating, after drying, when boiler temperature is 120 DEG C, into metatitanic acid zinc solution, zinc titanate is molten
Liquid temperature is 450 DEG C, impregnates 0.5min, by metatitanic acid zinc solution heating evaporation, heating evaporation temperature is generally 120 degree.
Then above-mentioned boiler is added in passivating solution and is passivated, the potassium bichromate that passivating solution is 80g/L is mixed with 4ml/L sulfuric acid
Close solution.
Then it is added in 40 DEG C of water, heating evaporation.?.Treated boiler inner wall shiny appearance, careful, no sag,
Elephant skin phenomenon.0.18 μm of surface roughness Ra.Thermal wear rate 3cm at 200 DEG C3/ m, hydrochloric acid infiltration loss 0.01% in 48 hours.
Embodiment 3
Boiler is washed using the mixed liquor of 12% sodium metaphosphate and 3% PA 800K, 8% Triaethanolamine, makes pot
Until furnace is flooded profit completely.Then using 15% dilute hydrochloric acid and the mixed liquor of 0.1% thiocarbamide, boiler is washed, is mixed
Liquid temperature 60 C.
(NH in the mixed solution of ammonium hydrogen carbonate and barium chloride is added in above-mentioned boiler4Cl concentration 100g/L, ZnCl2Concentration
150g/L), temperature is 85 DEG C, soaking time 1min.
After having impregnated, heating, after drying, when boiler temperature is 120 DEG C, into metatitanic acid zinc solution, zinc titanate is molten
Liquid temperature is 450 DEG C, impregnates 0.5min, by metatitanic acid zinc solution heating evaporation, heating evaporation temperature is generally 120 degree.
Then above-mentioned boiler is added in passivating solution and is passivated, the potassium bichromate and 4ml/L sulfuric acid that passivating solution is 100g/L
Mixed solution.Then it is added in 40 DEG C of water, heating evaporation.?.
Treated boiler inner wall shiny appearance, careful, no sag, elephant skin phenomenon.0.17 μm of surface roughness Ra.200
Thermal wear rate 3cm at DEG C3/ m, hydrochloric acid infiltration loss 0.01% in 48 hours.
Claims (8)
1. a kind of processing method on boiler inner wall surface, it is characterised in that sequentially include the following steps:
Boiler is carried out using the mixed liquor of 12 ~ 15% sodium metaphosphate and 3 ~ 6% PA 800K, 8 ~ 10% Triaethanolamine
Washing；Again using 13 ~ 15% dilute hydrochloric acid and the mixed liquor of 0.1 ~ 0.2% thiocarbamide, temperature is 40~60 DEG C, is washed to boiler
It washs；Then above-mentioned boiler is added in the mixed solution of ammonium hydrogen carbonate and barium chloride, impregnates 1~2min；Heating, after drying, when
When boiler temperature is 110 ~ 130 DEG C, metatitanic acid zinc solution is added, 0.5 ~ 1.5min is impregnated, by metatitanic acid zinc solution heating evaporation；Then
Above-mentioned boiler is added in passivating solution and is passivated, 40 ~ 45 DEG C of water, heating evaporation are added.
2. the method as described in claim 1, it is characterised in that in the mixed solution of the ammonium hydrogen carbonate and barium chloride, NH4Cl
Concentration be 100 ~ 150g/L, ZnCl2Concentration be 150 ~ 180g/L.
3. the method as described in claim 1, it is characterised in that the temperature of the mixed solution of the ammonium hydrogen carbonate and barium chloride
It is 70~85 DEG C.
4. the method as described in claim 1, it is characterised in that the zinc titanate solution temperature is 435 ~ 470 DEG C.
5. the method as described in claim 1, it is characterised in that the zinc titanate solution temperature is 435 ~ 445 DEG C.
6. the method as described in claim 1, it is characterised in that the zinc titanate solution concentration is 60 ~ 80g/L.
7. the method as described in claim 1, it is characterised in that the heating evaporation, temperature are 120 degree.
8. the method as described in claim 1, it is characterised in that the passivating solution is the dichromic acid that concentration is 80~100g/L
The mixed solution for the sulfuric acid that potassium and concentration are 3~4ml/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158786.2A CN109652789B (en) | 2019-03-04 | 2019-03-04 | Method for treating surface of inner wall of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158786.2A CN109652789B (en) | 2019-03-04 | 2019-03-04 | Method for treating surface of inner wall of boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109652789A true CN109652789A (en) | 2019-04-19 |
| CN109652789B CN109652789B (en) | 2020-09-11 |
Family
ID=66123827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910158786.2A Active CN109652789B (en) | 2019-03-04 | 2019-03-04 | Method for treating surface of inner wall of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109652789B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359269A (en) * | 2019-08-07 | 2019-10-22 | 李小虎 | A method of improving umbrella cloth ultraviolet resistance |
| CN115537789A (en) * | 2022-10-31 | 2022-12-30 | 安徽华威矿产设备有限公司 | Surface passivation anticorrosion equipment for processing stainless steel sieve plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009081639A1 (en) * | 2007-12-26 | 2009-07-02 | Sumitomo Metal Industries, Ltd. | Production method of internally-ribbed steel pipe |
| CN101487119A (en) * | 2009-02-18 | 2009-07-22 | 西安协力动力科技有限公司 | Metal composite passivation process after boiler cleaning in heat power plant |
| CN102586772A (en) * | 2012-02-24 | 2012-07-18 | 济宁新格瑞水处理有限公司 | Passivation process after chemical cleaning of boiler |
| CN106032575A (en) * | 2015-03-18 | 2016-10-19 | 东莞新科技术研究开发有限公司 | Boiler washing method |
-
2019
- 2019-03-04 CN CN201910158786.2A patent/CN109652789B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009081639A1 (en) * | 2007-12-26 | 2009-07-02 | Sumitomo Metal Industries, Ltd. | Production method of internally-ribbed steel pipe |
| CN101487119A (en) * | 2009-02-18 | 2009-07-22 | 西安协力动力科技有限公司 | Metal composite passivation process after boiler cleaning in heat power plant |
| CN102586772A (en) * | 2012-02-24 | 2012-07-18 | 济宁新格瑞水处理有限公司 | Passivation process after chemical cleaning of boiler |
| CN106032575A (en) * | 2015-03-18 | 2016-10-19 | 东莞新科技术研究开发有限公司 | Boiler washing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359269A (en) * | 2019-08-07 | 2019-10-22 | 李小虎 | A method of improving umbrella cloth ultraviolet resistance |
| CN115537789A (en) * | 2022-10-31 | 2022-12-30 | 安徽华威矿产设备有限公司 | Surface passivation anticorrosion equipment for processing stainless steel sieve plate |
| CN115537789B (en) * | 2022-10-31 | 2024-05-07 | 安徽华威矿产设备有限公司 | Surface passivation anti-corrosion equipment for stainless steel screen plate processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109652789B (en) | 2020-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101597758B (en) | Low chromium anticorrosive chemical conversion treating fluid on surface of constructive aluminium profile and use method thereof | |
| CN101280401B (en) | Hot-dip galvanizing method for steel products | |
| CN108149179B (en) | Hot galvanizing production process for fastener | |
| CN107513681B (en) | Hot-dip galvanizing process | |
| CN109652789A (en) | A kind of processing method on boiler inner wall surface | |
| CN104328371A (en) | Hot dip galvanizing technique for implementing corrosion resistance and rust resistance of steel tube | |
| CN104060310A (en) | Novel zinc-plating and anti-white point corrosion process for casting parts | |
| CN109881133A (en) | A kind of electric power tower component hot dip galvanizing process | |
| CN102634784B (en) | Surface treatment method of nuclear bridge | |
| CN101698955A (en) | Stainless steel, titanium and titanium alloy electromechanical blackening method | |
| CN116140167A (en) | Blackening process of high-strength bolt connection pair | |
| CN205368474U (en) | Zinc -plating flue gas recycle system | |
| CN105463363A (en) | Surface processing method for construction drill | |
| CN107779932A (en) | A kind of automobile processing mold electrophoresis process for protecting | |
| CN103608125A (en) | A process of electrolytic galvanizing with an enhanced anti-corrosive protection | |
| CN204474703U (en) | Blast furnace banking air port sealed structure | |
| CN103334073A (en) | Hot-dip galvanizing process | |
| CN203518222U (en) | Hot blast stove | |
| CN107130207A (en) | A kind of speed solid-powder zincizing agent | |
| CN108980180A (en) | A kind of zincizing bolt and its zincizing technique for iron tower of power transmission line | |
| CN207176046U (en) | A kind of hot-galvanized cauldron for automating circulation zinc liquid | |
| CN207891432U (en) | A kind of UTILIZATION OF VESIDUAL HEAT IN heats steel plate pre-treatment water installations indirectly | |
| CN107385385B (en) | A kind of preparation process of the powder zincizing agent of high utilization rate of zinc | |
| CN105112901A (en) | Phosphorization process for surface of steel material | |
| CN109797357A (en) | A kind of fastener hot galvanizing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Guangzhong Inventor after: Xu Chao Inventor before: Xu Chao |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200817 Address after: 230000 6-2508, Golden Plaza, 155 Jinzhai Road, Shushan District, Hefei City, Anhui Province Applicant after: Anhui Shengyuan Contract Energy Management Co.,Ltd. Address before: 277525 No. 314 Longshantou Village, Chaihudian Town, Tengzhou City, Zaozhuang City, Shandong Province Applicant before: Xu Chao |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |