CN1300543C - Method for corrosion resistant protection of condensed water system - Google Patents
Method for corrosion resistant protection of condensed water system Download PDFInfo
- Publication number
- CN1300543C CN1300543C CNB2003101016117A CN200310101611A CN1300543C CN 1300543 C CN1300543 C CN 1300543C CN B2003101016117 A CNB2003101016117 A CN B2003101016117A CN 200310101611 A CN200310101611 A CN 200310101611A CN 1300543 C CN1300543 C CN 1300543C
- Authority
- CN
- China
- Prior art keywords
- metal surface
- corrosion
- film forming
- waterglass
- dry
- 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.)
- Expired - Fee Related
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention relates to an anticorrosive protection method of a coagulated water system, which can also be used for the anticorrosive protection of various metal surfaces. A metal surface of a coagulated water system is cleaned and dried, and is activated in activating liquid in which an activating agent is added, and then, the metal surface is immersed into water glass film liquid to form a film. Then, the metal surface is dried, and a first layer of SiO2 film at the metal surface is made. A plurality of layers of SiO2 protective films are formed at the metal surface of the coagulated water system by repeatedly carrying out the film forming process of activation, immersion and drying to the metal surface. A plurality of layers of continuous and compact SiO2 protective films are formed at the metal surface by the treatment of the method, and thereby, the corrosion of metal or the metal surface of the coagulated water system is completely prevented.
Description
Technical field
The present invention relates to a kind of anti-corrosion protection method of condensate system, form inorganic protective film by the metal surface and realize protection.
Background technology
Condensate water is the very strong water of corrosivity, and corrosion not only causes the damage of condensing water conduit and equipment, and makes condensate water be polluted by corrosion products such as iron, copper and can not reclaim.Therefore, the anti-corrosion protection of condensate system is to material-saving, water saving, energy-conservation and environmental protection is all significant.
Present state-of-the-art condensate system anti-corrosion method remains the corrosion inhibiter method, promptly in system's method that continuously adds corrosion inhibiter in service.(IN174910A I Apr 1995) introduced employing acid treatment amine and prepared corrosion inhibiter document " Acid-treated amines in preparation ofvapor-phase inhibitor for protection of steel from wet-atmospheric corrosion ", and Japan Patent " Turbineequipment and waste heat-recovery boiler device and water treatment system " (JP2002180804 A2 26 Jun 2002) has been introduced and add corrosion inhibiter control pipeline corroding method in system.The corrosion inhibiter method can make the corrosion of condensate system alleviate greatly; but existing corrosion inhibiter exists the diaphragm poor stability; need continuous dosing reparation in service; because diaphragm is difficult to timely reparation; cause problems such as condensate water corrosion product too high levels, need that also condensate water is carried out operations such as iron removal by oxidation, fine filtering deironing and ion exchange iron-removing and just can reach the recovery requirement.
Summary of the invention
The present invention proposes a kind of condensate system metal surface and forms processing guard method complete, fine and close diaphragm for solving firm, the stability problem of condensate system metal surface protection film, realizes the anticorrosion fully and long period protection of condensate system.
Main technical schemes: main points are to adopt liquid phase deposition to form SiO in the condensate system metal surface
2Diaphragm.Its design principle is: the metal surface of activation is because H
+With the absorption of corrosion inhibiter and positively charged, thereby make SiO electronegative in the waterglass
2Colloidal particles absorption and deposition.Inhibition hydrochloric acid also can make SiO
2Film surface active and positively charged causes electronegative SiO
2The second adsorption of colloidal particles and deposition.
Major technique measure: with the process cleaning of condensate system metal surface, drying, in being added with the activating solution of activator, activate 2～10min, impregnated in film forming in the waterglass film forming liquid then, carry out drying then, baking temperature is 100 ℃～150 ℃, be no less than 30min drying time, make metal surface ground floor SiO
2Film repeats above-mentioned activation, dipping and dry film forming procedure to the metal surface, makes the condensate system metal surface form multilayer SiO
2Diaphragm; Used activating solution is the inhibition acid solution that contain corrosion inhibiter of pH value at 4-6; The modulus of waterglass is greater than 2.4, and the concentration of waterglass is 4000～10000mg/L in the film forming liquid, and the film forming liquid temp is 50～80 ℃;
The preparation method of above-mentioned inhibition acid solution is, adds 5～20g/L corrosion inhibiter in deionized water, adds hydrochloric acid, sulfuric acid, citric acid again, or Epoxysuccinic acid, reaches 4～6 until the pH of solution value; The corrosion inhibiter that is adopted determines according to the kind of acid, as: if hexamethylenetetramine and hydrochloric acid, commercially available fourth and sulfuric acid, Lan826 and citric acid, Lan826 and Epoxysuccinic acid are used (is commercially available corrosion inhibiter as if fourth, Lan826).
Preferably adopt the multi-purpose type corrosion inhibiter that these several acid all are suitable for, as commercially available Lan826 corrosion inhibiter.
Metal surface after the above-mentioned activation impregnated in the waterglass film forming liquid and is no less than 24 hours.
The concentration of waterglass 4500～7000mg/L preferably in the above-mentioned film forming liquid.
Above-mentioned the metal surface is repeated film forming procedure, be no less than 4 times.
Adopt said method for example the modal metal carbon steel of condensate system and copper surface to form fine and close continuously film, thereby prevent the condensate system corrosion of metal fully at metal.
The invention effect
The present invention has realized the complete anticorrosion and long period protection of condensate system; solve existing corrosion inhibiter method and needed continuous dosing; can only mitigate corrosion and can not protect fully to condensate system, cause the condensate water iron content too high and can not reach problems such as reclaiming requirement.
Adopt X-ray diffraction method (XPS) that the constituent analysis of gained film of the present invention is shown, have the Si element to exist in the film, its corresponding binding energy is: Si2s:154eV; Si2p:103.4eV.This experiment measuring value and SiO
2XPS standard spectrogram in the feature binding energy unanimity of Si element, the composition state that can determine Si element in the obtained film thus is SiO
2
In XPS standard spectrogram, the feature binding energy of Fe is 710.4 and 711.3eV, but the spectrogram of this experiment shows do not have the peak to occur at the feature binding energy place of Fe, and showing does not have the Fe element to exist in the film, and inhibition acid activation technology promptly of the present invention can make SiO
2Colloidal particles directly deposit or are adsorbed on the steel surface, thereby have solved the etching problem of plain steel in film forming procedure well.The characterization result that does not have the Fe element to exist in the film illustrates that also the structure of film is very complete, exposes out without any plain steel.
Adopt AFM that the observed result of the particle size in film surface appearance of the present invention and the film is shown, film is fine and close continuously, has covered parent metal fully.The particle size of film is between 30～50nm.
Containing oxygen and CO
2Condensate water in flood 72h, corrosion promptly appears in blank sample 5min, during EOT the corrosion very serious; Deposited SiO
2The sample of film is not found any corrosion in test period.In the film endurancing, the film forming sample floods still not corrosion generation in 12 months in condensate water.
The specific embodiment
With the process cleaning of condensate system metal surface, drying, in being added with the inhibition acid activation liquid of corrosion inhibiter, activate 2～10min, impregnated in the waterglass film forming liquid film forming then more than 24 hours, carry out drying then, baking temperature is 100 ℃～150 ℃, be no less than 30min drying time, make metal surface ground floor SiO
2Film repeats above-mentioned activation, dipping and dry film forming procedure to the metal surface, makes the condensate system metal surface form SiO more than 4 layers
2Diaphragm;
The concrete preparation method of used inhibition acid activation liquid is: in deionized water, adds 5～20g/L corrosion inhibiter, adds hydrochloric acid, sulfuric acid, citric acid again, or Epoxysuccinic acid, reach 4～6 until the pH of solution value; The corrosion inhibiter kind that is adopted is different because of the kind of acid, as: hexamethylenetetramine and hydrochloric acid, if commercially available corrosion inhibiter is fourth and sulfuric acid, the Lan826-citric acid, the Lan826-Epoxysuccinic acid preferably adopts the multi-purpose type corrosion inhibiter Lan826 (Lan826 is commercially available corrosion inhibiter) that these several acid all are suitable for.
Used waterglass film forming liquid, the modulus of waterglass is greater than 2.4, and the concentration of waterglass is 4500～7000mg/L preferably, and the film forming liquid temp is 50～80 ℃;
This method can be used for the anti-corrosion protection on any metalwork surface.
Embodiment:
Example 1: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 2: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of brass is injected the pH=5 that is added with 10g/L Lan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 3: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of red copper is injected the pH=5 that is added with 10g/L Lan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 4: to through the hydrochloric acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 5: to through the sulfuric acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 6: to through the citric acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 7: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with 10g/L hexamethylenetetramine corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 8: to being added with 10g/L if the epoxy succinic acid solution of the pH=5 of fourth corrosion inhibiter through cleaning, the dry condensate system injection that constitutes by the A3 steel, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 9: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=4 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 10: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=6 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 11: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 5g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 12: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 20g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 13: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 2min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 14: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 10min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 15: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 50 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 16: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 80 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 17: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 4000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 18: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 10000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 19: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 2.4) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 20: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 150 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 21: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 50min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 72h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 22: to through the epoxy succinic acid solution that cleans, the dry condensate system that is made of the A3 steel is injected the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, use nitrogen replacement behind the activation 5min, inject 55 ℃ 5000mg/L waterglass (modulus 3.1) solution immediately, behind the 24h dipping, with system evacuation, with 100 ℃ nitrogen or the dry 30min of air purge, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Condensate system operation 8760h after the film forming checks, does not find any corrosion, and monitoring test piece rate of corrosion is 0.
Example 23: will in the epoxy succinic acid solution of the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, activate 5min through cleaning, the dry product that constitutes by metals such as A3 steel, copper, aluminium, impregnated in immediately after the taking-up in 55 ℃ 5000mg/L waterglass (modulus 3.1) solution, behind 24h, product is taken out, in 100 ℃ of following freeze-day with constant temperature 30min, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Product is exposed 8760h in air, do not find any corrosion.
Example 24: will in the epoxy succinic acid solution of the pH=5 that is added with the 10g/LLan826 corrosion inhibiter, activate 5min through cleaning, the dry product that constitutes by metals such as A3 steel, copper, aluminium, impregnated in immediately after the taking-up in 55 ℃ 5000mg/L waterglass (modulus 3.1) solution, behind 24h, product is taken out, in 100 ℃ of following freeze-day with constant temperature 30min, can obtain one deck SiO in the metal surface
2Film.Repeat activation, flood and dry 3 times, obtain 4 layer films.Product is exposed 8760h in ordinary tap water, do not find any corrosion.
Claims (5)
1, a kind of method of condensate system anti-corrosion protection; between lay-off period, its metal surface is handled; it is characterized in that: with the process cleaning of condensate system metal surface, drying; in being added with the activating solution of activator, activate 2～10min; impregnated in film forming in the waterglass film forming liquid then, carry out drying then, baking temperature is 100 ℃～150 ℃; be no less than 30min drying time, make metal surface ground floor SiO
2Diaphragm repeats to activate, flood and dry film forming procedure to the metal surface, makes the condensate system metal surface form multilayer SiO
2Diaphragm; Used activating solution is the inhibition acid solution that contain corrosion inhibiter of pH value at 4-6; The modulus of waterglass is greater than 2.4, and the concentration of waterglass is 4000～10000mg/L in the film forming liquid, and the film forming liquid temp is 50～80 ℃.
2, method according to claim 1 is characterized in that: the preparation method of inhibition acid solution is, adds 5～20g/L corrosion inhibiter in deionized water, adds hydrochloric acid, sulfuric acid, citric acid or Epoxysuccinic acid again, reaches 4～6 until the pH of solution value; The corrosion inhibiter that is adopted is determined according to the kind of acid: hexamethylenetetramine and hydrochloric acid, multi-purpose type corrosion inhibiter and sulfuric acid, citric acid or Epoxysuccinic acid are used.
3, method according to claim 1 is characterized in that: the metal surface after the activation impregnated in the waterglass film forming liquid and is no less than 24 hours.
4, method according to claim 1 is characterized in that: the concentration of waterglass is 4500～7000mg/L in the film forming liquid.
5, method according to claim 1, it is characterized in that: the metal surface repeats film forming procedure, is no less than 4 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101016117A CN1300543C (en) | 2003-10-22 | 2003-10-22 | Method for corrosion resistant protection of condensed water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101016117A CN1300543C (en) | 2003-10-22 | 2003-10-22 | Method for corrosion resistant protection of condensed water system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1609543A CN1609543A (en) | 2005-04-27 |
| CN1300543C true CN1300543C (en) | 2007-02-14 |
Family
ID=34756197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101016117A Expired - Fee Related CN1300543C (en) | 2003-10-22 | 2003-10-22 | Method for corrosion resistant protection of condensed water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1300543C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0225580A (en) * | 1988-07-15 | 1990-01-29 | Kobe Steel Ltd | Surface-treated aluminum sheet for heat exchanger and production thereof |
| GB2245276A (en) * | 1990-06-22 | 1992-01-02 | Nuovo Pignone Spa | Anti-corrosion coating composition |
| CN1070696A (en) * | 1991-09-16 | 1993-04-07 | 何柱生 | Aluminum or aluminum alloy surface hydrophilic and preservative treatment technology |
| US5755887A (en) * | 1995-04-06 | 1998-05-26 | Nihon Sinku Gijutsu Kabusiki | Components of apparatus for film making and method for manufacturing the same |
| CN1053020C (en) * | 1994-12-30 | 2000-05-31 | 邵天敏 | Method for preparing aluminium and aluminium alloy surface coating |
| CN1434149A (en) * | 2002-01-23 | 2003-08-06 | 中国科学院金属研究所 | Method for preparing corrosion-resisting wearing-resisting coat used for magnesium and alloy thereof |
-
2003
- 2003-10-22 CN CNB2003101016117A patent/CN1300543C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0225580A (en) * | 1988-07-15 | 1990-01-29 | Kobe Steel Ltd | Surface-treated aluminum sheet for heat exchanger and production thereof |
| GB2245276A (en) * | 1990-06-22 | 1992-01-02 | Nuovo Pignone Spa | Anti-corrosion coating composition |
| CN1070696A (en) * | 1991-09-16 | 1993-04-07 | 何柱生 | Aluminum or aluminum alloy surface hydrophilic and preservative treatment technology |
| CN1053020C (en) * | 1994-12-30 | 2000-05-31 | 邵天敏 | Method for preparing aluminium and aluminium alloy surface coating |
| US5755887A (en) * | 1995-04-06 | 1998-05-26 | Nihon Sinku Gijutsu Kabusiki | Components of apparatus for film making and method for manufacturing the same |
| CN1434149A (en) * | 2002-01-23 | 2003-08-06 | 中国科学院金属研究所 | Method for preparing corrosion-resisting wearing-resisting coat used for magnesium and alloy thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1609543A (en) | 2005-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100393914C (en) | Plasma treatment for purifying copper or nickel | |
| Yang et al. | Corrosion inhibition of polydopamine nanoparticles on mild steel in hydrochloric acid solution | |
| JP4035581B2 (en) | Inner surface treatment method for high pressure gas containers | |
| CN111441061B (en) | In-situ metal rust removing and preventing agent as well as preparation method and application method thereof | |
| KR950000905B1 (en) | Stainless steel surface passivation treatment | |
| CN101031673A (en) | A method and equipment for heat recovery | |
| CN115572976B (en) | Composite corrosion inhibitor for metal steel structure of marine building and preparation method thereof | |
| CN1040136C (en) | Process for drying metal surfaces using gaseous hydrides to inhibit moisture adsorption and for removing adsorbed moisture from the metal surfaces | |
| CN1300543C (en) | Method for corrosion resistant protection of condensed water system | |
| CN104451814A (en) | Protection method for preventing marine atmosphere from corroding metals | |
| Li et al. | Influence of sodium lignosulfonate on the corrosion-inhibition behavior of Q235 steel in simulated concrete pore solutions | |
| Liu et al. | Improved corrosion inhibition of calcium disodium EDTA for mild steel in chloride-contaminated concrete pore solution | |
| Wang et al. | Corrosion behavior of Q235 steel by synergistic action of high concentration Cl− and complex scale in mixed salt flooding | |
| Treverton et al. | The structures and surface composition of chromate conversion coatings: an XPS and SEM study | |
| JP2918385B2 (en) | Surface treatment method for stainless steel members | |
| Shen et al. | Corrosion inhibition and adsorption behavior of (3-aminopropyl)-triethoxysilane on steel surface in the simulated concrete pore solution contaminated with chloride | |
| CN108359992B (en) | Method for reducing corrosion of strong oxidizing polymer degradation agent to oil well pipe column | |
| Angelopoulos et al. | Cationic polyacrylamide adsorption on epoxy surfaces | |
| CN114657546B (en) | Anti-corrosion treatment process for railway track embedded part | |
| Beccaria et al. | The effect of change of pH on the inhibitory action of 3-(trimethoxysilyl) propanethiol-1 on corrosion behaviour of carbon steel in NaCl solutions | |
| CN113832467B (en) | Polymer modified dopamine corrosion inhibitor, preparation method and application thereof | |
| CN114849496A (en) | Nano-diamond doped graphene oxide composite membrane and preparation method and application thereof | |
| Kumar et al. | BIA, DPA, MBTA and DMA as vapour phase corrosion inhibitors for mild steel under different atmospheric conditions | |
| Xu et al. | Anticorrosive properties and rust conversion mechanism of phytic acid‐based surface tolerant coating | |
| CN1320164C (en) | Gas phase corrosion inhibitor for industrial equipment protection and producing process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |