CN110359054A - It is a kind of for removing the cleaning agent of Boiler silica scale - Google Patents
It is a kind of for removing the cleaning agent of Boiler silica scale Download PDFInfo
- Publication number
- CN110359054A CN110359054A CN201910668811.1A CN201910668811A CN110359054A CN 110359054 A CN110359054 A CN 110359054A CN 201910668811 A CN201910668811 A CN 201910668811A CN 110359054 A CN110359054 A CN 110359054A
- Authority
- CN
- China
- Prior art keywords
- boiler
- polycarboxylic acids
- dtpa
- water
- surfactant
- 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.)
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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
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
It is a kind of for removing the cleaning agent of Boiler silica scale, be related to boiler water process.Boiler silica scale cleaning agent includes water, polycarboxylic acids, hydroxyacetic acid, surfactant, corrosion inhibiter, DTPA ammonium salt.The specific gravity of each component is respectively as follows: polycarboxylic acids 10-15%, and hydroxyacetic acid 40-50%, surfactant 1-2%, corrosion inhibiter 0.5-1%, diethylene triamine pentacetic acid (DTPA) amine salt 2-3%, remaining is water.Preparation method is: water, polycarboxylic acids, hydroxyacetic acid, surfactant, corrosion inhibiter, DTPA ammonium salt being sequentially added in container in proportion, are stirred at room temperature 10-15 minutes to get product.This product advantage is that polycarboxylic acids, hydroxyacetic acid, DTPA ammonium salt compounding have synergistic effect, has very strong once molten infiltration peeling effect, and significant effect low in cost to silicon dirt.
Description
Technical field
The present invention relates to boiler water process, the cleaning agent of specifically a kind of efficiently removal Boiler silica scale.
Background technique
If the water containing hardness enters boiler without processing, after running a period of time, on the heating surface of boiler water side just
Some solid deposits can be firmly attached, this phenomenon is known as fouling.The solid deposits sticked on heating surface are known as
Scale.Under certain condition, solid sediment can also be precipitated in pot water, in loose suspension, referred to as grain slag.Grain slag can be with
Blowdown removes, but if blowdown is not in time, part grain slag also can be on heating surface or water flow flows under slow site deposition
And it is converted to scale (normally referred to as " secondary scale ").The reason of boiler fouling, be first in water supply containing calcium and magnesium hardness or
Iron ion, silicone content are excessively high；Simultaneously again due to caused by the high temperature and pressure specific condition of boiler.
Dirt in boiler scale, especially high-pressure boiler, mainly calcium and magnesium sulfate and silicate, iron dirt, they
The complex salt of hard and compact is formed under high temperature；For dirt in hot-water boiler mostly based on the carbonate scale of calcium and magnesium, iron dirt, dirt is loose.
And heat exchanger dirt is mostly carbonate, sulfate, iron dirt, silicon dirt and biological sludge in industrial etc., dirty porosity and looseness is water-insoluble calcium and magnesium carbon
Hydrochlorate and various alkali formula molysite.Therefore, more, complex process of the boiler acid pickling scale removal than general water heater scale removal hardly possible.
Hardness ions are formed by dirt, and common inorganic acid, organic acid can remove；But the general chemistry of silicates dirt
Reagent not can be removed then.
Summary of the invention
Product of the present invention is not thorough for the removal of previous boiler silicate scale, cumbersome, the disadvantages of effect is undesirable and
One kind of research and development efficiently removes silicon dirt cleaning agent, the cleaning agent to Boiler silica scale removal rate up to 98% or more, and it is not any to boiler
Chemical attack.
The technical scheme is that Boiler silica scale cleaning agent includes the weight percent of each component are as follows:
Polycarboxylic acids 10-15%,
Hydroxyacetic acid 40-50%,
Surfactant 1-2%,
Corrosion inhibiter 0.5-1%,
Diethylene triamine pentacetic acid (DTPA) amine salt 2-3%,
Remaining is water.
Preparation method is: by water, polycarboxylic acids, hydroxyacetic acid, surfactant, corrosion inhibiter, DTPA ammonium salt in proportion according to
In secondary addition container, 10-15 minutes are stirred at room temperature to get product.
The beneficial effects of the present invention are: replacing EDETATE SODIUM salt and EDTA ammonium salt scale removal to work well using DTPA ammonium salt, no
Only there is good removal effect to silicon dirt, also there is brilliant scale removal effect to hardness ions dirt in boiler；Hydroxyacetic acid, polycarboxylic acids and
DTPA ammonium salt compound aqueous solution has synergistic effect, and the removal rate of the complexing generated once molten effect dirty silicon dirt stupid to boiler is up to
98% or more.
Operation instruction of the present invention: this product can use blowing out ablution during equipment out of use, can also be in the equipment runtime
Between use not blowing out ablution；When carrying out not blowing out cleaning, this product usage amount is usually 100-500ppm, is sent by confluent
In boiler (specific dosage is depending on scaling degree).
Embodiment
Embodiment 1:
Raw material is chosen by weight percentage
Polycarboxylic acids 15%,
Hydroxyacetic acid 40%,
Surfactant 2%,
Corrosion inhibiter 1%,
Diethylene triamine pentacetic acid (DTPA) amine salt 2%,
Remaining is water.
Water, polycarboxylic acids, hydroxyacetic acid, surfactant, corrosion inhibiter, DTPA ammonium salt are sequentially added in container in proportion,
10-15 minutes are stirred at room temperature to get product.
Embodiment 2:
Raw material is chosen by weight percentage
Polycarboxylic acids 15%,
Hydroxyacetic acid 50%,
Surfactant 2%,
Corrosion inhibiter 0.5%,
Diethylene triamine pentacetic acid (DTPA) amine salt 1.5%,
Remaining is water.
Water, polycarboxylic acids, hydroxyacetic acid, surfactant, corrosion inhibiter, DTPA ammonium salt are sequentially added in container in proportion,
10-15 minutes are stirred at room temperature to get product.
Application test and result
1. test specimen source: embodiment 1, embodiment 2.
2. detecting descaling rate experiment
2.1 test methods: descaling rate is judged using volumetric method in National Standard Method GB25148.
2.2 test processes: two serious steel pipes of silicate deposition are taken, are accessed in detergent line, with cleaning with sample
Water cleans steel pipe 2h, is full of water gaging water volume after cleaning in steel pipe.
2.3 test results:
| Sample | Descaling rate | Whether steel pipe corrodes |
| Embodiment 1 | 99.5% | It is no |
| Embodiment 2 | 99.3% | It is no |
It can be seen that the practical application effect of case study on implementation product of the invention from experimental principle and upper table, it is completely up to standard；As long as
This product is added by confluent during cleaning boiler, wash cycles 2-3h can remove the silicon dirt in boiler.
Claims (6)
1. a kind of its component of the cleaning agent for removing Boiler silica scale is: including water, polycarboxylic acids, hydroxyacetic acid, surfactant,
Corrosion inhibiter, DTPA ammonium salt, the weight percent of each component are as follows:
Polycarboxylic acids 10-15%,
Hydroxyacetic acid 40-50%,
Surfactant 1-2%,
Corrosion inhibiter 0.5-1%,
Diethylene triamine pentacetic acid (DTPA) amine salt 2-3%,
Remaining is water.
2. the polycarboxylic acids in formula can be one kind of polyacrylic acid, poly as described in claim 1.
3. as described in claim 1 formula in surfactant can be emulsifier ABS, OP-10 or 1227 one kind or
Person is a variety of.
4. the corrosion inhibiter in formula is the one or more of copper inhibitor or carbon steel corrosion inhibitor as described in claim 1.
5. the preparation method of Boiler silica scale cleaning agent as described in claim 1 is: by water, polycarboxylic acids, hydroxyacetic acid, surface-active
Agent, corrosion inhibiter, DTPA ammonium salt sequentially add in container in proportion, are stirred at room temperature 10-15 minutes to get product.
6. Boiler silica scale cleaning agent as described in claim 1 can use blowing out ablution during equipment out of use, can also set
Not blowing out ablution is used between the received shipment departure date；When carrying out not blowing out cleaning, this product usage amount is usually 100-500ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668811.1A CN110359054A (en) | 2019-07-24 | 2019-07-24 | It is a kind of for removing the cleaning agent of Boiler silica scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668811.1A CN110359054A (en) | 2019-07-24 | 2019-07-24 | It is a kind of for removing the cleaning agent of Boiler silica scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110359054A true CN110359054A (en) | 2019-10-22 |
Family
ID=68219993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910668811.1A Pending CN110359054A (en) | 2019-07-24 | 2019-07-24 | It is a kind of for removing the cleaning agent of Boiler silica scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110359054A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129862A (en) * | 2014-07-31 | 2014-11-05 | 威海翔宇环保科技有限公司 | Cleaning agent for removing boiler silicon scale |
-
2019
- 2019-07-24 CN CN201910668811.1A patent/CN110359054A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129862A (en) * | 2014-07-31 | 2014-11-05 | 威海翔宇环保科技有限公司 | Cleaning agent for removing boiler silicon scale |
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| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191022 |