CN1754844A - Acid descaling agent for central air conditioner circulating water - Google Patents
Acid descaling agent for central air conditioner circulating water Download PDFInfo
- Publication number
- CN1754844A CN1754844A CN 200410066844 CN200410066844A CN1754844A CN 1754844 A CN1754844 A CN 1754844A CN 200410066844 CN200410066844 CN 200410066844 CN 200410066844 A CN200410066844 A CN 200410066844A CN 1754844 A CN1754844 A CN 1754844A
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- CN
- China
- Prior art keywords
- descaling agent
- acid
- center air
- circulating water
- central air
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- 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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Abstract
The present invention pertains to the field of chemical industry, wherein an acidic scale remover for the circulating water system of central air-conditioners is disclosed, which comprises ethylenediamine tetra-acetic acid, sodium humate, polyphosphates and water, its pH is 2-3.5. The scale remover can be used for effectively removing carbonate scale and rust scale.
Description
Technical field
The invention belongs to chemical field, relate to a kind of chemical detergent, more specifically, the present invention relates to a kind of center air-condition circle water acid descaling agent.
Background technology
At present, in the domestic acidic chemical cleaning agent, make with the most use with hydrochloric acid at the center air-condition circle water system.Hydrochloric acid can wash hard scale of being made up of alkaline earth metal carbonate in the hardware and the corrosion product of being made up of metal oxide effectively, and its can with the carbonate of metal or oxide compound reaction, make it to change into the soluble metal salt class.But hydrochloric acid belongs to strong acid, must add inhibiter before usefulness, and the inhibition step often exists corrosion mitigating effect not obvious, and the inhibition process is loaded down with trivial details, be difficult to the problem of controlling and operating.
The present invention provides a kind of gentleness effective acidic descaling agent in order to simplify the treatment step of center air-condition circle water system, and it has pH the scope higher than strong acid, and corrodibility is low, has solved the defective that above-mentioned prior art exists.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of center air-condition circle water acid descaling agent, and it comprises ethylenediamine tetraacetic acid (EDTA), Sodium salts humic acids, poly-phosphate and water.
Further, the prescription of center air-condition circle water acid descaling agent employing of the present invention is as follows by weight percentage:
Ethylenediamine tetraacetic acid (EDTA) 10～15%;
Sodium salts humic acids: 5～8%;
Poly-phosphate: 20～25%;
Water: surplus;
PH value after being made into is 2～3.5.
Center air-condition circle water acid descaling agent of the present invention weaker concn in use can be according to different situations (thickness of dirt layer) change.Such as at general air-conditioning system, its Dilution ratio in use is 1: 15-1: 3.
Further, center air-condition circle water acid descaling agent of the present invention Dilution ratio in use can be 1: 10.
Acidic descaling agent of the present invention does not resemble has extremely strong corrosive nature to metal the strong acid, and its character is relatively gentle, does not produce corrosion of metal substantially.
Acidic descaling agent of the present invention can safely, effectively and apace be removed the multiple settling of metallic surface, dirty matter, and easy and simple to handle, with low cost.
Embodiment
Embodiment 1 center air-condition circle water systemic circulation washing out method
1. dilute acidic descaling agent of the present invention with 1: 10 Dilution ratio.
2. the need cleaning system is done to check comprehensively, confirm to need to clean the unimpeded trouble free of position current.
3. the position that will clean and other position of not cleaning are separated, and insert temporary pipeline and add explosive barrel, form circulation loop.As no recycle pump itself, external recycle pump.
4. add up quantity of circulating water, check that circulation loop has or not leakage.
5. add medicament, survey one time PH every half an hour, PH is between 2.5-4.5 in control, adds scale remover when PH＞4.5.Maintenance water pump circulation in preceding 8 hours was closed the pump static immersing 10 hours, turn on pump circulation 2-6 hour more then.
6. clean behind the cleaning fluid discharge with the clear water rinsing.
Claims (4)
1. a center air-condition circle water acid descaling agent is characterized in that, it comprises ethylenediamine tetraacetic acid (EDTA), Sodium salts humic acids, poly-phosphate and water.
2. center air-condition circle water acid descaling agent according to claim 1 is characterized in that, the prescription of employing is as follows by weight percentage:
Ethylenediamine tetraacetic acid (EDTA) 10～15%;
Sodium salts humic acids: 5～8%;
Poly-phosphate: 20～25%;
Water: surplus;
PH value after being made into is 2～3.5.
3. center air-condition circle water acid descaling agent according to claim 2 is characterized in that, acidic descaling agent Dilution ratio in use is 1: 15-1: 3.
4. center air-condition circle water acid descaling agent according to claim 2 is characterized in that, acidic descaling agent Dilution ratio in use is 1: 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066844 CN1754844A (en) | 2004-09-29 | 2004-09-29 | Acid descaling agent for central air conditioner circulating water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066844 CN1754844A (en) | 2004-09-29 | 2004-09-29 | Acid descaling agent for central air conditioner circulating water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1754844A true CN1754844A (en) | 2006-04-05 |
Family
ID=36688440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066844 Pending CN1754844A (en) | 2004-09-29 | 2004-09-29 | Acid descaling agent for central air conditioner circulating water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1754844A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9714182B2 (en) | 2014-01-03 | 2017-07-25 | Guangzhou Special Pressure Equipment Inspection And Research Institute | Phosphorus-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method |
| US9714181B2 (en) | 2014-01-03 | 2017-07-25 | Guangzhou Special Pressure Equipment Inspection And Research Institute | Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method |
| CN112665256A (en) * | 2020-12-22 | 2021-04-16 | 苏州世伍克机电设备有限公司 | Ice machine energy-saving control system capable of automatically adding chemicals and removing scale and operation method thereof |
-
2004
- 2004-09-29 CN CN 200410066844 patent/CN1754844A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9714182B2 (en) | 2014-01-03 | 2017-07-25 | Guangzhou Special Pressure Equipment Inspection And Research Institute | Phosphorus-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method |
| US9714181B2 (en) | 2014-01-03 | 2017-07-25 | Guangzhou Special Pressure Equipment Inspection And Research Institute | Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method |
| CN112665256A (en) * | 2020-12-22 | 2021-04-16 | 苏州世伍克机电设备有限公司 | Ice machine energy-saving control system capable of automatically adding chemicals and removing scale and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |