CN109402648A - A kind of station boiler cleaning citric acid hydrotropy cleaning agent and its application - Google Patents
A kind of station boiler cleaning citric acid hydrotropy cleaning agent and its application Download PDFInfo
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- CN109402648A CN109402648A CN201811425180.2A CN201811425180A CN109402648A CN 109402648 A CN109402648 A CN 109402648A CN 201811425180 A CN201811425180 A CN 201811425180A CN 109402648 A CN109402648 A CN 109402648A
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- station boiler
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- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
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- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses station boiler cleaning citric acid hydrotropy cleaning agents, include following component: KL600 1.0 ~ 20.0% by mass percentage；Corrosion inhibiter 0.1% ~ 0.8%；Reducing agent 0.1% ~ 5.0%；Citric acid or ammonium citrate 3.0% ~ 12.0%；Desalination water surplus.The present invention is by being added to citric acid for certain content and its particular kind of KL600 or station boiler cleaning citric acid hydrotropy cleaning agent is prepared in ammonium citrate solution, it is applied to station boiler low-level (stack-gas) economizer, economizer, water-cooling wall, superheater, in the Process of Chemical Cleaning of the heat exchange pipe surface such as reheater or other metal equipments, concentration of iron up to 18000mg/L will not be precipitated in the cleaning agent, citric acid can be significantly improved to the dissolution of superheater and reheater oxide layer, and in the process of cleaning be not in oxide layer largely peel off and ironic citrate precipitating.
Description
Technical field
The present invention relates to a kind of station boiler cleaning citric acid hydrotropy cleaning agent and its applications.
Background technique
The falling off of Utility Boiler Superheater and reheater heat exchanger tube steam side oxide skin, blockage problem becomes increasingly conspicuous, seriously
Influence the safe and stable operation in thermal power plant.The oxidation of these heat exchanger tube steam sides can be removed using chemical cleaning technique
Skin, while the thermal efficiency of boiler can be increased substantially.But due to feelings such as the structure of superheater and reheater, material, running temperatures
Condition, the oxide layer of Surface Creation is difficult effectively to dissolve using conventional cleaning agent during operation, therefore uses existing relevant criterion
The cleaning agent formula and technique that directive/guide and book information provide, which carry out superheater and the chemical cleaning of reheater heat exchanger tube, to be solved
Certainly following problem:
1) amount of generation oxide layer is very big during most power station pot superheaters and reheater are run, and especially dirt amount reaches 1000g/
m2When above, cleaning formulation control is improper to be will cause a large amount of oxide skins and peels off during cleaning, and is deposited in U (W) type bottom of the tube
Blocking causes cleaning to interrupt or clean failure, needs to control cleaning formulation to oxide layer stripping speed；
2) due to boiler superheater and reheater for a long time high temperature, high pressure steam condition under run, heat transfer tube wall formed
The oxide amount of having the characteristics that is more, compact structure, multilayered structure, is imitated using conventional cleaning agent formula technique to the dissolution of oxide
Fruit is poor, and cleaning effect is unobvious；
3) heat exchanger tube of superheater and reheater is related to ferrite using unused metal material according to different vapor (steam) temperature sections
Steel (such as 12CrMoV, T22, T23, T91) and austenitic steel stainless steel (such as TP347H, Super304H, HR3C), using normal
Rule cleaning formulation and technique cannot combine the dissolution of these oxide layer on surface of material and the corrosion control to substrate metal；
4) conventional citric acid cleaning Recipe is measured in dirt in big equipment cleaning process, is easy to happen the feelings of ironic citrate precipitating
Condition causes cleaning to interrupt or cleaning failure, and common empirical value is to require concentration of iron in cleaning solution no more than 8000mg/L,
This will cause the waste of a large amount of cleaning agents, increase cleaning waste liquid amount.
Therefore, a kind of dissolution work that can significantly improve citric acid to superheater and reheater oxide layer is urgently found in industry
With, and be in the process of cleaning not in the station boiler cleaning use that ironic citrate precipitating was largely peeled off and be not in oxide layer
Citric acid hydrotropy cleaning agent.
Summary of the invention
Based on this, the primary purpose of the present invention is that a kind of station boiler cleaning citric acid hydrotropy cleaning agent is provided, it should
Cleaning agent can significantly improve citric acid to the dissolution of superheater and reheater oxide layer, and will not go out in the process of cleaning
Existing oxide layer is largely peeled off and ironic citrate precipitating.
Another object of the present invention is to provide the application of above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent.
The present invention realizes by following technical solution:
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 1.0~20.0%；
Corrosion inhibiter 0.1% ~ 0.8%；
Reducing agent 0.1% ~ 5.0%；
Citric acid or ammonium citrate 3.0% ~ 12.0%；
Desalination water surplus.
Preferably, station boiler cleaning citric acid hydrotropy cleaning agent, by mass percentage, comprising such as the following group
Point:
KL600 5.0~15.0%；
Corrosion inhibiter 0.1% ~ 0.8%；
Reducing agent 0.1% ~ 5.0%；
Citric acid or ammonium citrate 3.0% ~ 12.0%；
Desalination water surplus.
Wherein, the KL600 is mixture, which is by diamine, ammonium hydroxide, morpholine, triethanolamine, dimethylamine, second
Ethylenediamine tetraacetic acid (EDTA), 1-hydroxy ethylidene-1,1-diphosphonic acid, aminotrimethylenephosphonic acid, diethyl pentetic acid mixing composition.
Preferably, the KL600, in use, by mass percentage in citric acid, including following component:
Diamine 0.5% ~ 5%；
Ammonium hydroxide 1.0% ~ 10.0%；
Morpholine 1.0% ~ 10.0%；
Triethanolamine 1.0% ~ 10.0%；
Dimethylamine 1.0% ~ 10.0%；
Ethylenediamine tetra-acetic acid 0.3% ~ 3.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 0.3% ~ 3.0%；
Aminotrimethylenephosphonic acid 0.3% ~ 3.0%；
Diethyl pentetic acid 0.3% ~ 3.0%.
Preferably, the KL600, in use, by mass percentage in ammonium citrate, including following component:
Diamine 0.1% ~ 0.5%；
Morpholine 0.1% ~ 1.0%；
Triethanolamine 0.3% ~ 3.0%；
Dimethylamine 0.1% ~ 3.0%；
Ethylenediamine tetra-acetic acid 1.0% ~ 10.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 1.0% ~ 10.0%；
Aminotrimethylenephosphonic acid 1.0% ~ 10.0%；
Diethyl pentetic acid 1.0% ~ 10.0%.
Station boiler cleaning citric acid hydrotropy cleaning agent of the present invention, is dissolved with demineralized water mix according to a conventional method
Can be prepared, specifically comprise the following steps: by said ratio by each component demineralized water dissolution mixing after constant volume to get.
Wherein, station boiler cleaning of the present invention is 50 DEG C ~ 135 with the use temperature of citric acid hydrotropy cleaning agent
DEG C, the applicable pH value range in citric acid is 1.0 ~ 7.0, and the cleaning solution does not go out in concentration of iron up to 18000mg/L
Now precipitate.
It is saved with citric acid hydrotropy cleaning agent in station boiler low temperature in addition, the invention also discloses above-mentioned station boiler cleanings
The chemistry of the heat exchange pipe surface such as coal device, economizer, water-cooling wall, superheater, reheater or ferrous metals material surface oxide is clear
Wash application.
In addition, station boiler cleaning of the present invention can ensure that the iron that cleaning system is related to citric acid hydrotropy cleaning agent
Ferritic steel (such as 20G, 12CrMoV, T22, T23, T91) and austenitic steel stainless steel (such as TP347H, Super304H, HR3C
Deng) etc. the corrosion rates of all metal materials can control in the indication range of correlation standard.
Compared with prior art, beneficial effects of the present invention are as follows:
The present invention is by being added to citric acid for certain content and its particular kind of KL600 or ammonium citrate solution is prepared
Station boiler cleaning citric acid hydrotropy cleaning agent, is applied to station boiler low-level (stack-gas) economizer, economizer, water-cooling wall, mistake
Hot device, reheater etc. exchange heat pipe surface or other metal equipments Process of Chemical Cleaning in, concentration of iron is up in the cleaning agent
18000mg/L will not be precipitated, and can significantly improve citric acid to the dissolution of superheater and reheater oxide layer, and
It is in the process of cleaning not in that oxide layer is largely peeled off and ironic citrate precipitating.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.The present invention can be with many not
With form realize, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes to this
Disclosure of the invention content understanding is more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
It is conventional method unless otherwise specified in following specific embodiments；Original used in following specific embodiments
Material, reagent material etc. are commercially available products unless otherwise specified；Unless otherwise specified, the percentage in the present invention is
Mass percent.
Embodiment 1
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 10.0%；
Corrosion inhibiter 0.3%；
Reducing agent 1.0%；
Citric acid 10.0%；
Desalination water surplus；
Wherein, the KL600, by mass percentage, including following component:
Diamine 0.5% ~ 5%；
Ammonium hydroxide 1.0% ~ 10.0%；
Morpholine 1.0% ~ 10.0%；
Triethanolamine 1.0% ~ 10.0%；
Dimethylamine 1.0% ~ 10.0%；
Ethylenediamine tetra-acetic acid 0.3% ~ 3.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 0.3% ~ 3.0%；
Aminotrimethylenephosphonic acid 0.3% ~ 3.0%；
Diethyl pentetic acid 0.3% ~ 3.0%；
The above-mentioned station boiler cleaning preparation method of citric acid hydrotropy cleaning agent, includes the following steps: by said ratio (as joined
Amine 0.5%, ammonium hydroxide 2.0%, morpholine 1.5, triethanolamine 1.0%, dimethylamine 2.0%, ethylenediamine tetra-acetic acid 1.0%, 1-hydroxy ethylene-1,1-diphosphonic
Sour 0.5%, aminotrimethylenephosphonic acid 0.5%, diethyl pentetic acid 0.8%) it will be fixed after each component demineralized water dissolution mixing
Hold to 300mL to get.
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, closed item
Under part, cleaning dirt amount is 1061g/m212CrMoV superheater tube oxide layer, clean 48 hours, oxide layer cleans up, pipe sample
Surface residual dirt amount is 1g/m2。
Embodiment 2
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 6.0%；
Corrosion inhibiter 0.3%；
Reducing agent 0.5%；
Citric acid 10.0%；
Desalination water surplus；
Wherein, the KL600, by mass percentage, including following component:
Diamine 0.5% ~ 5%；
Ammonium hydroxide 1.0% ~ 10.0%；
Morpholine 1.0% ~ 10.0%；
Triethanolamine 1.0% ~ 10.0%；
Dimethylamine 1.0% ~ 10.0%；
Ethylenediamine tetra-acetic acid 0.3% ~ 3.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 0.3% ~ 3.0%；
Aminotrimethylenephosphonic acid 0.3% ~ 3.0%；
Diethyl pentetic acid 0.3% ~ 3.0%；
The above-mentioned station boiler cleaning preparation method of citric acid hydrotropy cleaning agent, includes the following steps: by said ratio (as joined
Amine 1.0%, ammonium hydroxide 1.0%, morpholine 1.0, triethanolamine 1.0%, dimethylamine 1.0%, ethylenediamine tetra-acetic acid 0.5%, 1-hydroxy ethylene-1,1-diphosphonic
Sour 0.5%, aminotrimethylenephosphonic acid 0.5%, diethyl pentetic acid 0.5%) it will be fixed after each component demineralized water dissolution mixing
Hold to 300mL to get.
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 95 DEG C are warming up to, closed item
Under part, cleaning dirt amount is 1180g/m2T91 superheater tube oxide skin, clean 48 hours, oxide layer clean up only remain it is chromium-rich
Layer, pipe sample surface is without remaining dirt amount.
Embodiment 3
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 15.0%；
Corrosion inhibiter 0.3%；
Reducing agent 0.5%；
Citric acid 10.0%；
Desalination water surplus；
Wherein, the KL600, by mass percentage, including following component:
Diamine 0.5% ~ 5%；
Ammonium hydroxide 1.0% ~ 10.0%；
Morpholine 1.0% ~ 10.0%；
Triethanolamine 1.0% ~ 10.0%；
Dimethylamine 1.0% ~ 10.0%；
Ethylenediamine tetra-acetic acid 0.3% ~ 3.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 0.3% ~ 3.0%；
Aminotrimethylenephosphonic acid 0.3% ~ 3.0%；
Diethyl pentetic acid 0.3% ~ 3.0%；
The above-mentioned station boiler cleaning preparation method of citric acid hydrotropy cleaning agent, includes the following steps: by said ratio (as joined
Amine 0.5%, ammonium hydroxide 1.0%, morpholine 1.0, triethanolamine 2.0%, dimethylamine 1.5%, ethylenediamine tetra-acetic acid 1.0%, 1-hydroxy ethylene-1,1-diphosphonic
Sour 0.3%, aminotrimethylenephosphonic acid 0.3%, diethyl pentetic acid 0.3%) it will be fixed after each component demineralized water dissolution mixing
Hold to 300mL to get.
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, closed item
Under part, cleaning dirt amount is 1226g/m2T22 superheater tube oxide skin, clean 36 hours, oxide layer cleans up, pipe sample surface
Remaining dirt amount is 1g/m2。
Embodiment 4
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 10.0%；
Corrosion inhibiter 0.3%；
Reducing agent 0.3%；
Ammonium citrate 10.0%；
Desalination water surplus；
Wherein, the KL600, by mass percentage, including following component:
Diamine 0.5% ~ 5%；
Ammonium hydroxide 1.0% ~ 10.0%；
Morpholine 1.0% ~ 10.0%；
Triethanolamine 1.0% ~ 10.0%；
Dimethylamine 1.0% ~ 10.0%；
Ethylenediamine tetra-acetic acid 0.3% ~ 3.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 0.3% ~ 3.0%；
Aminotrimethylenephosphonic acid 0.3% ~ 3.0%；
Diethyl pentetic acid 0.3% ~ 3.0%；
The above-mentioned station boiler cleaning preparation method of citric acid hydrotropy cleaning agent, includes the following steps: by said ratio (as joined
Amine 0.5%, ammonium hydroxide 1.0%, morpholine 2.5, triethanolamine 1.5%, dimethylamine 0.5%, ethylenediamine tetra-acetic acid 1.0%, 1-hydroxy ethylene-1,1-diphosphonic
Sour 1.0%, aminotrimethylenephosphonic acid 2.5%, diethyl pentetic acid 3.0%) it will be fixed after each component demineralized water dissolution mixing
Hold to 300mL to get.
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 95 DEG C are warming up to, closed item
Under part, cleaning dirt amount is 652g/m2TP347 superheater tube oxide skin, clean 48 hours, oxide layer cleans up, pipe sample table
Face only remains chromium-enriched layer, no remaining dirt amount.
Embodiment 5
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 6.0%；
Corrosion inhibiter 0.3%；
Reducing agent 2.0%；
Ammonium citrate 10.0%；
Desalination water surplus；
Wherein, the KL600, by mass percentage, including following component:
Diamine 0.5% ~ 5%；
Ammonium hydroxide 1.0% ~ 10.0%；
Morpholine 1.0% ~ 10.0%；
Triethanolamine 1.0% ~ 10.0%；
Dimethylamine 1.0% ~ 10.0%；
Ethylenediamine tetra-acetic acid 0.3% ~ 3.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 0.3% ~ 3.0%；
Aminotrimethylenephosphonic acid 0.3% ~ 3.0%；
Diethyl pentetic acid 0.3% ~ 3.0%；
The above-mentioned station boiler cleaning preparation method of citric acid hydrotropy cleaning agent, includes the following steps: by said ratio (as joined
Amine 1.5%, ammonium hydroxide 2.0%, morpholine 1.5, triethanolamine 2.0%, dimethylamine 8.0%, ethylenediamine tetra-acetic acid 3.0%, 1-hydroxy ethylene-1,1-diphosphonic
Sour 1.5%, aminotrimethylenephosphonic acid 1.5%, diethyl pentetic acid 3.0%) it will be fixed after each component demineralized water dissolution mixing
Hold to 100mL to get.
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, closed item
Under part, cleaning dirt amount is 1152g/m212CrMoV superheater tube oxide layer, clean 48 hours, oxide layer cleans up, pipe sample
Surface residual dirt amount is 2g/m2。
Embodiment 6
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 15.0%；
Corrosion inhibiter 0.3%；
Reducing agent 2.0%；
Ammonium citrate 10.0%；
Desalination water surplus；
Wherein, the KL600, by mass percentage, including following component:
Diamine 0.1% ~ 0.5%；
Morpholine 0.1% ~ 1.0%；
Triethanolamine 0.3% ~ 3.0%；
Dimethylamine 0.1% ~ 3.0%；
Ethylenediamine tetra-acetic acid 1.0% ~ 10.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 1.0% ~ 10.0%；
Aminotrimethylenephosphonic acid 1.0% ~ 10.0%；
Diethyl pentetic acid 1.0% ~ 10.0%；
The above-mentioned station boiler cleaning preparation method of citric acid hydrotropy cleaning agent, includes the following steps: by said ratio (as joined
Amine 1.5%, ammonium hydroxide 1.0%, morpholine 1.5, triethanolamine 1.0%, dimethylamine 3.0%, ethylenediamine tetra-acetic acid 1.0%, 1-hydroxy ethylene-1,1-diphosphonic
Sour 0.5%, aminotrimethylenephosphonic acid 0.5%, diethyl pentetic acid 0.5%) it will be fixed after each component demineralized water dissolution mixing
Hold to 300mL to get.
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, closed item
Under part, cleaning dirt amount is 1234g/m212CrMoV superheater tube oxide layer, clean 48 hours, oxide layer cleans up, pipe sample
Surface residual dirt amount is 2g/m2。
Embodiment 7
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 2.0%；
Corrosion inhibiter 0.3%；
Reducing agent 1.0%；
Citric acid 10.0%；
Desalination water surplus；
Other are the same as embodiment 1；
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, under confined conditions,
Cleaning dirt amount is 2572g/m212CrMoV superheater tube oxide layer, clean 48 hours, oxide layer cleans up, pipe sample surface
Remaining dirt amount is 7g/m2。
Embodiment 8
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 20.0%；
Corrosion inhibiter 0.3%；
Reducing agent 1.0%；
Citric acid 10.0%；
Desalination water surplus；
Other are the same as embodiment 1；
Then by the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, under confined conditions,
Cleaning dirt amount is 2658g/m212CrMoV superheater tube oxide layer, clean 48 hours, oxide layer cleans up, pipe sample surface
Remaining dirt amount is 8g/m2。
Comparative example 1
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 0.5%；
Corrosion inhibiter 0.3%；
Reducing agent 0.5%；
Citric acid 10.0%；
Desalination water surplus；
Other are the same as embodiment 1；
By the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, under confined conditions, cleaning
Dirt amount is 3176g/m212CrMoV superheater tube oxide layer, clean 48 hours, oxide layer cleans up, pipe sample surface residual
Dirt amount is 12g/m2。
Comparative example 2
A kind of station boiler cleaning citric acid hydrotropy cleaning agent includes by mass percentage following component:
KL600 30.0%；
Corrosion inhibiter 0.3%；
Reducing agent 0.5%；
Citric acid 10.0%；
Desalination water surplus；
Other are the same as embodiment 1；
By the above-mentioned station boiler cleaning citric acid hydrotropy cleaning agent being prepared, 90 DEG C are warming up to, under confined conditions, cleaning
Dirt amount is 3102g/m212CrMoV superheater tube oxide layer, clean 48 hours, oxide layer cleans up, pipe sample surface residual
Dirt amount is 11g/m2。
Claims (6)
1. a kind of station boiler cleaning citric acid hydrotropy cleaning agent, which is characterized in that by mass percentage, comprising such as the following group
Point:
KL600 1.0~20.0%；
Corrosion inhibiter 0.1% ~ 0.8%；
Reducing agent 0.1% ~ 5.0%；
Citric acid or ammonium citrate 3.0% ~ 12.0%；
Desalination water surplus.
2. station boiler cleaning citric acid hydrotropy cleaning agent according to claim 1, which is characterized in that press quality percentage
Include following component than meter:
KL600 5.0~15.0%；
Corrosion inhibiter 0.1% ~ 0.8%；
Reducing agent 0.1% ~ 5.0%；
Citric acid or ammonium citrate 3.0% ~ 12.0%；
Desalination water surplus.
3. station boiler cleaning citric acid hydrotropy cleaning agent according to claim 1 or 2, which is characterized in that described
KL600 is mixture, which is by diamine, ammonium hydroxide, morpholine, triethanolamine, dimethylamine, ethylenediamine tetra-acetic acid, hydroxyl second
Pitch di 2 ethylhexyl phosphonic acid, aminotrimethylenephosphonic acid, diethyl pentetic acid mixing composition.
4. station boiler cleaning citric acid hydrotropy cleaning agent according to claim 3, which is characterized in that the KL600,
In use, by mass percentage in citric acid, including following component:
Diamine 0.5% ~ 5%；
Ammonium hydroxide 1.0% ~ 10.0%；
Morpholine 1.0% ~ 10.0%；
Triethanolamine 1.0% ~ 10.0%；
Dimethylamine 1.0% ~ 10.0%；
Ethylenediamine tetra-acetic acid 0.3% ~ 3.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 0.3% ~ 3.0%；
Aminotrimethylenephosphonic acid 0.3% ~ 3.0%；
Diethyl pentetic acid 0.3% ~ 3.0%.
5. station boiler cleaning citric acid hydrotropy cleaning agent according to claim 3, which is characterized in that the KL600,
In use, by mass percentage in ammonium citrate, including following component:
Diamine 0.1% ~ 0.5%；
Morpholine 0.1% ~ 1.0%；
Triethanolamine 0.3% ~ 3.0%；
Dimethylamine 0.1% ~ 3.0%；
Ethylenediamine tetra-acetic acid 1.0% ~ 10.0%；
1-hydroxy ethylidene-1,1-diphosphonic acid 1.0% ~ 10.0%；
Aminotrimethylenephosphonic acid 1.0% ~ 10.0%；
Diethyl pentetic acid 1.0% ~ 10.0%.
6. station boiler cleaning as described in any one in claim 1-5 is saved with citric acid hydrotropy cleaning agent in station boiler low temperature
The chemistry of the heat exchange pipe surface such as coal device, economizer, water-cooling wall, superheater, reheater or ferrous metals material surface oxide is clear
Wash application.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629235A (en) * | 2019-10-18 | 2019-12-31 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Cleaning agent for scale containing apatite or/and calcium phosphate scale and system containing austenitic steel and application thereof |
| CN112624073A (en) * | 2020-12-28 | 2021-04-09 | 贵州川恒化工股份有限公司 | Production method of water-soluble fertilizer monoammonium phosphate |
| CN113789517A (en) * | 2021-09-14 | 2021-12-14 | 西安热工研究院有限公司 | Rinsing and passivating integrated reagent and process for chemical cleaning of power station boiler |
| CN113862684A (en) * | 2021-09-26 | 2021-12-31 | 西安热工研究院有限公司 | Chemical cleaning agent and cleaning method for oxide skin of superheater made of martensitic stainless steel T91 material |
| CN115491681A (en) * | 2022-08-31 | 2022-12-20 | 西安热工研究院有限公司 | Chemical cleaning liquid and cleaning process for boiler under oxygen-adding working condition |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629235A (en) * | 2019-10-18 | 2019-12-31 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Cleaning agent for scale containing apatite or/and calcium phosphate scale and system containing austenitic steel and application thereof |
| CN112624073A (en) * | 2020-12-28 | 2021-04-09 | 贵州川恒化工股份有限公司 | Production method of water-soluble fertilizer monoammonium phosphate |
| CN113789517A (en) * | 2021-09-14 | 2021-12-14 | 西安热工研究院有限公司 | Rinsing and passivating integrated reagent and process for chemical cleaning of power station boiler |
| CN113789517B (en) * | 2021-09-14 | 2023-04-07 | 西安热工研究院有限公司 | Rinsing and passivation integrated reagent and process in chemical cleaning of power station boiler |
| CN113862684A (en) * | 2021-09-26 | 2021-12-31 | 西安热工研究院有限公司 | Chemical cleaning agent and cleaning method for oxide skin of superheater made of martensitic stainless steel T91 material |
| CN113862684B (en) * | 2021-09-26 | 2024-01-23 | 西安热工研究院有限公司 | Chemical cleaning agent and cleaning method for martensitic stainless steel T91 material superheater oxide skin |
| CN115491681A (en) * | 2022-08-31 | 2022-12-20 | 西安热工研究院有限公司 | Chemical cleaning liquid and cleaning process for boiler under oxygen-adding working condition |
| CN115491681B (en) * | 2022-08-31 | 2024-03-26 | 西安热工研究院有限公司 | Chemical cleaning liquid and cleaning process for boiler with oxygenation working condition |
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