CN1754839A - Industrial cooling circulating water system cleaning agent - Google Patents
Industrial cooling circulating water system cleaning agent Download PDFInfo
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- CN1754839A CN1754839A CN 200410066827 CN200410066827A CN1754839A CN 1754839 A CN1754839 A CN 1754839A CN 200410066827 CN200410066827 CN 200410066827 CN 200410066827 A CN200410066827 A CN 200410066827A CN 1754839 A CN1754839 A CN 1754839A
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- circulating water
- clean
- water system
- cooling circulating
- acid
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Abstract
The present pertains to the field of chemical industry, wherein a cleaning agent for industrial circulating water systems is disclosed, wherein the formulation is selected from some or all of ethylenediamine tetra-acetic acid, sodium humate, ployphosphates, and hydroxyl ethylidene diphosphonic acid. The cleaning agent for industrial circulating water systems has high cleaning efficiency and almost no corrosiveness.
Description
Technical field
The invention belongs to chemical field, relate to a kind of clean-out system of circulating water system, more particularly, the present invention relates to a kind of chemical of industrial cooling circulating water system.
Background technology
The matting of general industry cooling circulating water system mainly is to adopt some acid or acid salt to carry out at present, and these acid or acid salt comprise hydrochloric acid, sulfuric acid, nitric acid, thionamic acid, ammonium bifluoride etc.Wherein with hydrochloric acid use at most.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.The carbonate of these acid and metal or oxide compound reaction make it to change into the soluble metal salt class.Alkali clean be with the chemical agent of strong basicity or alkalescence as clean-out system go to loosen, a sedimental class clean-out system in emulsification and the dispersed metal equipment.Alkali cleaning agent commonly used has sodium hydroxide, yellow soda ash, Sodium phosphate dibasic and water glass.Alkali will add tensio-active agent wetting removal grease, dust and biological substance when cleaning simultaneously, to improve cleaning performance.But when adopting acid to clean the alkali cleaning, because the corrodibility that soda acid itself exists also needs to use inhibiter to prevent that locking system sustains damage.
Though present restrainer corrosion mitigating effect is better, most of effective inhibiter all has specificity to a certain extent, promptly only at several metals of certain several acid rust inhibition is arranged.When the system that is cleaned was made up of multiple metal, improper if inhibiter is selected for use, consequence was hardly imaginable.The corrosion mitigating effect of inhibiter is subjected to the restriction of pickling agent concentration still more, if operator's experience is not abundant, add acid or add the method for inhibiter inappropriate, cause the too high or local density of corrosion inhibitor of local acid concentration on the low side, all can make the metal at these positions suffer heavy corrosion.Though alkalescence is cleaned metals such as iron, copper are not had corrosion, metals such as aluminium, zinc are had very big corrodibility, and under the strong basicity environment, be difficult to find a kind of effective inhibiter at aluminium, zinc.So to the recirculating cooling water system of a large amount of galvanized pipes, aluminium heater being arranged, carrying out alkali cleaning is unsuitable.
And, when carrying out pickling, alkali cleaning, because pH value can not bring hidden danger to ordinary production if do not stop production not in the PH scope of the normal operation of system; Moreover the adding of a large amount of pickling medicaments, alkali cleaning medicament and the discharging of the cleaning waste liquid intrasystem part or all of water of all need draining is perhaps formed interim scavenger circuit, and this certainly will require system to stop production.
When mineral acid pickling, alkali cleaning, all have a large amount of dirty pull-ups to fall, the solid particulate of the slabbing that these come off is very easy in the stagnant area of current area deposition, even enters the obstruction that the thinner pipeline of caliber causes this part pipeline with recirculated water.For this equipment that has than the tubule footpath of picture industry production unit, the dirt of removing is very easy blocking pipe just.Cause the consequence more serious than fouling.
Along with social productive forces make constant progress and people for the attention of save energy, safety in production, High-efficient Production, traditional chemical obviously can not adapt to present requirement, and has certain potential safety hazard in actually operating.Based on the defective of above prior art, the inventor has invented multi-level composite cleaning technique, can effectively address the above problem.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of clean-out system of industrial cooling circulating water system, the prescription of described clean-out system be selected from ethylenediamine tetraacetic acid (EDTA), Sodium salts humic acids, poly-phosphate, the 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid partly or entirely.
Further, the prescription of clean-out system of the present invention according to weight percent is: 10-25% ethylenediamine tetraacetic acid (EDTA), 15-25% Sodium salts humic acids, 25-35% poly-phosphate, 20-30% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid.
Further, the prescription of clean-out system of the present invention according to weight percent is: 20% ethylenediamine tetraacetic acid (EDTA), 20% Sodium salts humic acids, 28% poly-phosphate, 32% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid.
The temperature that the clean-out system of industrial cooling circulating water system of the present invention uses is 30-80 ℃.It can at room temperature clean, if carry out suitable heating, will obtain more good and cleaning performance efficiently.
It mainly is to utilize it to form stable chelating with metal ions such as calcium, magnesium, iron, copper that ethylenediamine tetraacetic acid (EDTA) cleans, and ferric oxide and the dirty class settling of copper and calcium magne-scale class are all had stronger removing ability, and minimum to corrosion of metal.
Sodium salts humic acids is commonly called as natrium humate, is chocolate or black gelatinoid or amorphous end.Water-soluble posthydrolysis generates humic acids and sodium hydroxide.The effect of Sodium salts humic acids is relevant with humic acids, and humic acids is a kind of natural organic high molecular compound, and it contains more all kinds of active groups.These active groups have determined humic acids to have slightly acidic, wetting ability, ion exchangeable, complexing, oxidation-reduction quality and physiologically active etc., not only all kinds of dirty types are had the complexing solvency action, and suspended substance is had dispersion and emulsifying effect.
Poly-phosphate is the good corrosion inhibiting and descaling agent of cooling water system still not, when its concentration is higher (200-1000mg/l), also is a kind of safe clean-out system.
Use circulating water system clean-out system of the present invention, have lot of advantages: extent of corrosion is little, the cleaning that can not stop production, remove microorganism dirt efficient height, eluate is difficult for deposition.
Embodiment
In an industrial cycle water system, keep system's normal operating condition, add 20% ethylenediamine tetraacetic acid (EDTA), 20% Sodium salts humic acids, 28% poly-phosphate, 32% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid.
1. temperature is increased to 50 ℃, through finishing cleaning in 3 hours.
2. under the same temperature, at room temperature carry out, through 5 hours, dirt was removed substantially, along with scavenging solution row industrial cycle water system.
Claims (4)
1. the clean-out system of an industrial cooling circulating water system is characterized in that, the prescription of described clean-out system be selected from ethylenediamine tetraacetic acid (EDTA), Sodium salts humic acids, poly-phosphate, the 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid partly or entirely.
2. the clean-out system of industrial cooling circulating water system according to claim 1, it is characterized in that the prescription of described clean-out system according to weight percent is: 12-25% ethylenediamine tetraacetic acid (EDTA), 15-25% Sodium salts humic acids, 25-35% poly-phosphate, 20-30% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid.
3. the clean-out system of industrial cooling circulating water system according to claim 2, it is characterized in that the prescription of described clean-out system according to weight percent is: 20% ethylenediamine tetraacetic acid (EDTA), 20% Sodium salts humic acids, 28% poly-phosphate, 32% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid.
4. the clean-out system of industrial cooling circulating water system according to claim 1 is characterized in that, the temperature that the clean-out system of described industrial cooling circulating water system uses is 30-80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066827 CN1754839A (en) | 2004-09-29 | 2004-09-29 | Industrial cooling circulating water system cleaning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066827 CN1754839A (en) | 2004-09-29 | 2004-09-29 | Industrial cooling circulating water system cleaning agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1754839A true CN1754839A (en) | 2006-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066827 Pending CN1754839A (en) | 2004-09-29 | 2004-09-29 | Industrial cooling circulating water system cleaning agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN1754839A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705159B (en) * | 2009-10-30 | 2011-10-19 | 常州市肯创环境工程技术有限公司 | Cleaning agent |
| CN103058398A (en) * | 2013-01-17 | 2013-04-24 | 新疆汇通旱地龙腐植酸有限责任公司 | Prevent water of lost agent for secondary pipe network and preparation and application method thereof |
| CN104629920A (en) * | 2013-11-11 | 2015-05-20 | 中国石油化工股份有限公司 | Biological slime stripping agent and method for stripping biological slime in circulating cooling water system |
| CN106010806A (en) * | 2016-05-20 | 2016-10-12 | 安徽建筑大学 | Multi-functional composite cleaning solution for on-line cleaning of heavy water scales of water-ring vacuum pump |
| CN116024049A (en) * | 2022-12-30 | 2023-04-28 | 华能嘉祥发电有限公司 | Cleaning agent for circulating water online monitoring system, preparation method and cleaning method thereof |
-
2004
- 2004-09-29 CN CN 200410066827 patent/CN1754839A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705159B (en) * | 2009-10-30 | 2011-10-19 | 常州市肯创环境工程技术有限公司 | Cleaning agent |
| CN103058398A (en) * | 2013-01-17 | 2013-04-24 | 新疆汇通旱地龙腐植酸有限责任公司 | Prevent water of lost agent for secondary pipe network and preparation and application method thereof |
| CN104629920A (en) * | 2013-11-11 | 2015-05-20 | 中国石油化工股份有限公司 | Biological slime stripping agent and method for stripping biological slime in circulating cooling water system |
| CN104629920B (en) * | 2013-11-11 | 2017-09-29 | 中国石油化工股份有限公司 | The method of biological clay in a kind of biological clay remover and strip cycles cooling water system |
| CN106010806A (en) * | 2016-05-20 | 2016-10-12 | 安徽建筑大学 | Multi-functional composite cleaning solution for on-line cleaning of heavy water scales of water-ring vacuum pump |
| CN116024049A (en) * | 2022-12-30 | 2023-04-28 | 华能嘉祥发电有限公司 | Cleaning agent for circulating water online monitoring system, preparation method and cleaning method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |