CN102897925A - Corrosion and scale inhibitor - Google Patents
Corrosion and scale inhibitor Download PDFInfo
- Publication number
- CN102897925A CN102897925A CN2012104350575A CN201210435057A CN102897925A CN 102897925 A CN102897925 A CN 102897925A CN 2012104350575 A CN2012104350575 A CN 2012104350575A CN 201210435057 A CN201210435057 A CN 201210435057A CN 102897925 A CN102897925 A CN 102897925A
- Authority
- CN
- China
- Prior art keywords
- corrosion inhibiting
- corrosion
- descaling agent
- nitrite
- stirring
- 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.)
- Pending
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention belongs to the technical field of water treatment, and in particular relates to a corrosion and scale inhibitor. The corrosion and scale inhibitor comprises the following raw materials in percentage by weight: 8 to 12 percent of molybdate, 12 to 15 percent of nitrite, 4 to 6 percent of azole derivative, 10 to 15 percent of sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer, and the balance of 4 to 5 weight percent alkali solution. The corrosion and scale inhibitor is of a zinc-free and alkali molybdenum series formula, and is applied to a softened water closed cycle system; and the consumption of a corrosion inhibitor of molybdate, nitrite and the like is reduced, the treatment cost can be effectively reduced, and the risk of environmental pollution can also be reduced. The corrosion and scale inhibitor has an excellent using effect, the corrosion rate of carbon steel metals can be less than 0.025mm/a, the corrosion rate of copper and copper alloy can be less than 0.002mm/a, and the scale inhibiting rate can reach 100 percent.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related to a kind of corrosion inhibiting and descaling agent.
Background technology
Contain various salts in the natural water, these salts are dissolved as positively charged ion and negatively charged ion, mainly contain Ca
2+, Mg
2+, Na
+And HCO
3 -, SO
4 2-, Cl
-Deng, contain the water of these salts, in the concentrated process of heating evaporation, the Ca in the water
2+, Mg
2+Plasma anion binding continuous and in the water becomes the indissoluble material and separates out, and generates incrustation scale, is attached on the heat-transfer surface.Because the heat conductivility of incrustation scale is very poor, thereby has hindered heat exchange, greatly reduces heat exchange efficiency, thereby jeopardizes device security, causes adverse consequences.Especially to the exigent equipment of some heat exchange, such as the steel-making continuous casting crystallizer, in continuous casting billet solidification processing, the heat that in 1min, will shed by crystallizer, Gao Shike accounts for and always needs about 20% of heat dissipation capacity, therefore guarantee that crystallizer has enough cooling poweies very important, it has decisive influence to the formation of initial stage base shell.
For fear of because of recirculated water fouling or corrosion crystallizer, do not cause heat transfer efficiency high or conduct heat inhomogeneously, the processing of recirculated cooling water is just seemed particularly important.In order to eliminate fouling to the impact of production unit, for the very high heat-exchange equipment of susceptibility, must remove the hardness components that can form incrustation scale in the water, adopt softening water to cool off, the Risk Reduction of fouling is extremely very low.At present, the component cooling water systems such as most domestic steel mill continuous cast mold, ladle furnace, vacuum oven, oxygen rifle all adopt softening water to cool off.Because softening water has been removed the most of hardness components in the water, from water quality corrosion and scaling trend analysis, the corrosion tendency of softening water will strengthen greatly, equipment and pipeline are caused serious corrosion, cause the corrodibility fouling, even the equipment perforation, therefore must add inhibiter to water softening system, carry out inhibition and process.The water softening system inhibiter of present domestic use mainly contains molybdate, tungstate, nitrite, chromic salt etc.Separately component adds concentration and surpasses 200mg/L, and wherein molybdate, tungstate unit price are very high, and it is very high that heavy dose adds cost, and nitrite, chromic salt belong to highly toxic substance, and it is very large that heavy dose adds environmental pollution.
Summary of the invention
For defects, the invention provides a kind of corrosion inhibiting and descaling agent, thereby solve the corrosion of sealing and circulating softening water treatment system and scale problems.
Technical scheme of the present invention is:
The invention provides a kind of corrosion inhibiting and descaling agent, its raw material and weight proportion thereof are: molybdate 8-12%, nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are the 4-5wt% alkaline solution for concentration.
Described azole derivative is a kind of in benzotriazole or the methyl phenylpropyl alcohol triazole.
Described molybdate is a kind of in Sodium orthomolybdate or the potassium molybdate.
Described nitrite is a kind of in Sodium Nitrite or the potassium nitrite.
Described alkaline solution is sodium hydroxide solution.
The present invention also provides the preparation method of above-mentioned corrosion inhibiting and descaling agent, be specially: alkaline solution, azole derivative, molybdate, nitrite, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer are added under normal temperature in the conversion unit successively, leave standstill behind the stirring and evenly mixing and namely get corrosion inhibiting and descaling agent of the present invention; The weight proportion of each raw material is: molybdate 8-12%, and nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are the 4-5wt% alkaline solution for concentration.
Preferably, the preparation method of corrosion inhibiting and descaling agent of the present invention is: first alkaline solution is added conversion unit, add while stirring afterwards azole derivative, add while stirring again molybdate behind the stirring and evenly mixing, behind stirring and evenly mixing, add while stirring again nitrite, add while stirring at last sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer, behind stirring and evenly mixing, leave standstill room temperature and namely get corrosion inhibiting and descaling agent of the present invention; The weight proportion of each raw material is: molybdate 8-12%, and nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are the 4-5wt% alkaline solution for concentration.
The present invention also provides the purposes of above-mentioned corrosion inhibiting and descaling agent in the softening water treatment system.
Preferably, above-mentioned corrosion inhibiting and descaling agent is applicable to calcium hardness: 0-45mg/L, pH:6-9, chlorion: 0-150mg/L, total iron 0-3mg/L, the softening water recycle system of total salinity: 0-500mg/L.
Beneficial effect of the present invention:
Corrosion inhibiting and descaling agent of the present invention is without zinc, alkalescence, molybdenum system prescription, is applicable to the softening water closed circuit circulatory system.The present invention has reduced the usage quantity of the inhibiter such as molybdate, nitrite, not only can effectively reduce processing cost, can also reduce the risk of environmental pollution.
Corrosion inhibiting and descaling agent of the present invention by organic and inorganic corrosion inhibiting and descaling agent, dispersion agent, auxiliary is composite forms, system component has obvious synergistic function, and compatible good with sterilant is to iron ion and halogen better tolerance, easy to operate, high comprehensive performance.In addition, product of the present invention adds each feed composition in proportion to stir in the reactor at normal temperatures and gets final product, and production technique is simple, and component is composite easily, and product stability is good.
Corrosion inhibiting and descaling agent result of use of the present invention is excellent: the erosion rate of carbon steel metalloid can be less than 0.025mm/a, the erosion rate of copper and copper alloy can be less than 0.002mm/a, contain efficient multipolymer in the prescription, the inorganic salt scale and corrosion product is deposited good restraining effect on the high temperature heat transfer face, scale inhibition performance can reach 100%, much smaller than " Code for design of industrial recirculating cooling water treatment " requirement in (GB50050-2007), save process water, can be widely used in metallurgy, chemical industry, the similar recirculating cooling water system such as chemical fibre has sizable social benefit and promotional value.
Embodiment
The invention provides a kind of corrosion inhibiting and descaling agent, its raw material and weight proportion thereof are: molybdate 8-12%, nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are the 4-5wt% alkaline solution for concentration.
The present invention also provides the preparation method of above-mentioned corrosion inhibiting and descaling agent, be specially: alkaline solution, azole derivative, molybdate, nitrite, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer are added under normal temperature in the conversion unit successively, leave standstill behind the stirring and evenly mixing and namely get corrosion inhibiting and descaling agent of the present invention; The weight proportion of each raw material is: molybdate 8-12%, and nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are the 4-5wt% alkaline solution for concentration.
Preferably, the preparation method of corrosion inhibiting and descaling agent of the present invention is: first alkaline solution is added conversion unit, add while stirring afterwards azole derivative, add while stirring again molybdate behind the stirring and evenly mixing, behind stirring and evenly mixing, add while stirring again nitrite, add while stirring at last sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer, behind stirring and evenly mixing, leave standstill room temperature and namely get corrosion inhibiting and descaling agent of the present invention; The weight proportion of each raw material is: molybdate 8-12%, and nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are the 4-5wt% alkaline solution for concentration.Owing to can generate heat after various raw materials are added together, all need cool to normal temperature behind the raw material blendings and namely get product of the present invention.
In addition, among the present invention, stir if various raw materials are added in the conversion unit simultaneously regardless of order ground, owing to the different reasons of various material dissolution degree, precipitation can occur in the preparation, products obtained therefrom does not meet relevant criterion, does not reach service requirements.
The present invention also provides the purposes of above-mentioned corrosion inhibiting and descaling agent in the softening water treatment system.
Preferably, above-mentioned corrosion inhibiting and descaling agent is applicable to calcium hardness: 0-45mg/L, pH:6-9, chlorion: 0-150mg/L, total iron 0-3mg/L, the softening water recycle system of total salinity: 0-500mg/L.
Among the present invention, molybdate is anodic corrosion inhibitor, forms fine and close protective membrane in the metallic surface, the greatly generation of inhibiting point corrosion, and thermostability is high, can be used for the system of the high and local superheating of heat flow density.
Nitrite is the inhibiter that carbon steel is had good corrosion mitigating effect.It is generally acknowledged that it is anodic corrosion inhibitor, it can make the alloy passivations such as carbon steel and copper, zinc, forms the gamma-iron oxide passive film, thereby suppress polymetallic corrosion, adopt the compound prescription of Sodium Nitrite and Sodium orthomolybdate, reduce the working concentration of two kinds of monomers, obtain better corrosion mitigating effect.
Azole derivative can be combined with copper atom with covalent linkage and coordinate bond, mutually alternately forms chain polymer, and at the insoluble Cu-BTA protective membrane of the Surface Creation of metallic copper, thereby the corrosion of inhibition copper and alloy thereof is very strong to the resistibility of oxygenizement.
Sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer has good dispersion and stops dissolved salt in the water and the performance of suspended particles precipitation, not only can stop the generation of calcium carbonate, calcium sulfate scale, but dispersing iron oxide also, and have the calcium phosphate of prevention and generate.
Corrosion inhibiting and descaling agent refers to that those are used in the material that protective effect is played in the metallic surface, adds this a small amount of class chemical substance and the corrosion and scaling speed of material in this medium is obviously reduced even is zero; Keep simultaneously the original physical and mechanical properties of material constant.
In order to understand better the present invention, further specify the present invention below in conjunction with embodiment.
Embodiment 1 softening water treatment system corrosion inhibiting and descaling agent, preparation method and result of use thereof
The raw material of corrosion inhibiting and descaling agent and quality proportioning thereof are as follows: Sodium orthomolybdate 9%, and Sodium Nitrite 15%, benzotriazole 5%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 12%, all the other are that concentration is the sodium carbonate solution of 5wt%.
Its preparation method is specially:
Prior to adding 540 kg of water in the conversion unit, open whipping appts, slowly evenly add 50 kilograms of caustic soda, stirred 10 minutes; Secondly slowly add 50 kilograms of benzotriazoles, stirred 20 minutes; Slowly add afterwards 90 kilograms of Sodium orthomolybdates, stirred 10 minutes; Then slowly add 150 kilograms of Sodium Nitrites, stirred 10 minutes; Last sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer the 120 kg that slowly adds stirs and stops stirring after 30 minutes, leaves standstill that metering packing can prepare 1000 kilograms of products after 60 minutes.
The use properties research of gained corrosion inhibiting and descaling agent:
1, product quality indicator: gained corrosion inhibiting and descaling agent quality index of the present invention satisfies the requirement of " water conditioner-anti-incrustation corrosion inhibitor III " (HG/T2431-93).
2, by the corrosion-mitigation scale-inhibition test, measure the use properties of corrosion inhibiting and descaling agent:
Test conditions: calcium hardness: 40mg/L, pH:7.3, chlorion: 120mg/L, total iron 0.5mg/L, total salinity: 450mg/L, test temperature: 60 ± 1 ℃;
Test method: a certain amount of water is injected in the dynamic testing equipment, circulate by certain flow, and water temperature is controlled at 60 ± 1 ℃; The control refill flow makes the interior water level of device substantially keep constant, and test piece is suspended in the system, adds test medicine, begins test.In the process of the test, regularly sampling (needing quantitatively) is analyzed, measure total alkalinity and total hardness content (Total Water and the amount that drips moisturizing in the simultaneously accurate recording sampling timer), replenishing and water amount of blowdown of Adjustment System, continue 120 hours, take out the monitoring test piece, calculate erosion rate according to changes in weight.By the monitoring to the discharge of the experiment water of the dynamic simulation experimental device of flowing through, water-in temperature, water outlet temperature, heat medium temperature, processed to calculate the scale inhibition performance data by industrial computer;
Test-results: erosion rate: 0.013mm/a, scale inhibition performance: 100%.
Embodiment 2 softening water treatment systems corrosion inhibiting and descaling agent, preparation method and result of use thereof
The raw material of corrosion inhibiting and descaling agent and quality proportioning thereof are as follows: Sodium orthomolybdate 10%, and Sodium Nitrite 14%, benzotriazole 4.5%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 11%, all the other are that concentration is the sodium carbonate solution of 5wt%.
Its preparation method is specially:
Prior to adding 550 kilograms in water in the conversion unit, open whipping appts, slowly evenly add 50 kilograms of caustic soda, add finish after, continue to stir 10 minutes; Slowly add afterwards 45 kilograms of benzotriazoles, add finish after, stirred 20 minutes; Then slowly add 100 kilograms of Sodium orthomolybdates, add finish after, continue to stir 10 minutes; Slowly add again 140 kilograms of Sodium Nitrites, continue to stir 10 minutes; Last 110 kilograms of the sodium acrylate-hydroxyethyl methylacrylates-methyl acrylate copolymer that slowly add.After full raw material all adds and finishes, continue to stir and stop after 30 minutes stirring, leave standstill that metering packing gets final product after 60 minutes.
The use properties research of gained corrosion inhibiting and descaling agent:
1, product quality indicator: the products obtained therefrom quality meets the regulation of " water conditioner-anti-incrustation corrosion inhibitor III " (HG/T2431-93).
2, by the corrosion-mitigation scale-inhibition test, measure the use properties of corrosion inhibiting and descaling agent:
Test conditions: calcium hardness: 45mg/L, pH:7.6, chlorion: 150mg/L, total iron 0.7mg/L, total salinity: 500mg/L, test temperature: 60 ± 1 ℃;
Test method: concrete grammar is with embodiment 1.
Test-results: erosion rate: 0.022mm/a, scale inhibition performance: 100%.
Embodiment 3 softening water treatment systems corrosion inhibiting and descaling agent, preparation method and result of use thereof
The raw material of corrosion inhibiting and descaling agent and quality proportioning thereof are as follows: Sodium orthomolybdate 12%, and Sodium Nitrite 13%, benzotriazole 6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10%, all the other are that concentration is 5% sodium carbonate solution.
Its preparation method is specially:
Prior to adding 540 kilograms in water in the conversion unit, open whipping appts, slowly evenly add 50 kilograms of caustic soda, add finish after, continue to stir 10 minutes; Then slowly add 60 kilograms of benzotriazoles, add finish after, stirred 20 minutes; Then slowly add the Sodium orthomolybdate 120 kg, add finish after, continue to stir 10 minutes; Then slowly add 130 kilograms of Sodium Nitrites, continue to stir 10 minutes; Last 100 kilograms of the sodium acrylate-hydroxyethyl methylacrylates-methyl acrylate copolymer that slowly add.After full raw material all adds and finishes, continue to stir and stop after 30 minutes stirring, leave standstill that metering packing gets final product after 60 minutes.
The use properties research of corrosion inhibiting and descaling agent of the present invention:
1, product quality indicator: the products obtained therefrom quality satisfies " water conditioner-anti-incrustation corrosion inhibitor III " (HG/T2431-93) requirement.
2, by the corrosion-mitigation scale-inhibition test, measure the use properties of corrosion inhibiting and descaling agent:
Test conditions: calcium hardness: 40mg/L, pH:7.4, chlorion: 140mg/L, total iron 0.9mg/L, total salinity: 400mg/L, test temperature: 60 ± 1 ℃;
Test method: concrete grammar is with embodiment 1.
Test-results: erosion rate: 0.019mm/a, scale inhibition performance: 100%.
Claims (9)
1. corrosion inhibiting and descaling agent is characterized in that, its raw material and weight proportion thereof are: molybdate 8-12%, nitrite 12-15%, azole derivative 4-6%, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer 10-15%, all the other are the alkaline solution of 4-5wt% for concentration.
2. corrosion inhibiting and descaling agent according to claim 1 is characterized in that, described azole derivative is a kind of in benzotriazole or the methyl phenylpropyl alcohol triazole.
3. corrosion inhibiting and descaling agent according to claim 1 and 2 is characterized in that, described molybdate is a kind of in Sodium orthomolybdate or the potassium molybdate.
4. corrosion inhibiting and descaling agent according to claim 1 and 2 is characterized in that, described nitrite is a kind of in Sodium Nitrite or the potassium nitrite.
5. corrosion inhibiting and descaling agent according to claim 1 and 2 is characterized in that, described alkaline solution is sodium hydroxide solution.
6. the preparation method of claim 1 or 2 described corrosion inhibiting and descaling agents, it is characterized in that, described alkaline solution, azole derivative, molybdate, nitrite, sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer are added in the conversion unit successively according to said ratio under normal temperature, leave standstill behind the stirring and evenly mixing and namely get corrosion inhibiting and descaling agent of the present invention.
7. the preparation method of corrosion inhibiting and descaling agent according to claim 6, it is characterized in that, first alkaline solution is added conversion unit, add while stirring afterwards azole derivative, add while stirring again molybdate behind the stirring and evenly mixing, behind stirring and evenly mixing, add while stirring again nitrite, add while stirring at last sodium acrylate-hydroxyethyl methylacrylate-methyl acrylate copolymer, behind stirring and evenly mixing, leave standstill room temperature and namely get corrosion inhibiting and descaling agent of the present invention.
8. claim 1 or the purposes of 2 described corrosion inhibiting and descaling agents in the softening water treatment system.
9. the purposes of corrosion inhibiting and descaling agent according to claim 8 in the softening water treatment system, it is characterized in that, described corrosion inhibiting and descaling agent is applicable to calcium hardness: 0-45mg/L, pH:6-9, chlorion: 0-150mg/L, total iron content 0-3mg/L, the softening water treatment system of total salinity: 0-500mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104350575A CN102897925A (en) | 2012-11-05 | 2012-11-05 | Corrosion and scale inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104350575A CN102897925A (en) | 2012-11-05 | 2012-11-05 | Corrosion and scale inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102897925A true CN102897925A (en) | 2013-01-30 |
Family
ID=47570461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104350575A Pending CN102897925A (en) | 2012-11-05 | 2012-11-05 | Corrosion and scale inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102897925A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217807A (en) * | 2015-10-16 | 2016-01-06 | 安徽欣创节能环保科技股份有限公司 | A kind of closed circuit soft water system corrosion inhibiting and descaling agent and using method thereof |
| CN107162224A (en) * | 2017-05-31 | 2017-09-15 | 四川奥恒环保科技有限公司 | A kind of corrosion inhibiting and descaling agent and preparation method thereof |
| CN107311320A (en) * | 2017-06-07 | 2017-11-03 | 上海市环境工程设计科学研究院有限公司 | A kind of antisludging agent and its application that waste water is handled for supercritical Water Oxidation Technology |
| CN109796086A (en) * | 2017-11-16 | 2019-05-24 | 柳州市皇盛环保科技有限公司 | A kind of scale inhibitor for industrial circulating cooling water |
| CN111233178A (en) * | 2020-02-27 | 2020-06-05 | 威海翔泽新材料科技有限公司 | Phosphorus-free composite cylinder cleaning agent for low-pressure boiler and preparation method thereof |
| CN112299572A (en) * | 2020-10-16 | 2021-02-02 | 三门核电有限公司 | Treatment method of industrial closed cooling water system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1353748A (en) * | 1970-05-04 | 1974-05-22 | Muetzel P S | Composition for addition to a central heating system or other closed circuit water system |
| WO2003018487A1 (en) * | 2001-08-24 | 2003-03-06 | Dober Chemical Corporation | Sustained release coolant additive compositions |
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
| CN102127768A (en) * | 2010-01-15 | 2011-07-20 | 中国石油化工股份有限公司 | Corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof |
| CN102557276A (en) * | 2010-12-17 | 2012-07-11 | 上海洗霸科技股份有限公司 | Composite water treatment agent of closed type circulating water system |
-
2012
- 2012-11-05 CN CN2012104350575A patent/CN102897925A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1353748A (en) * | 1970-05-04 | 1974-05-22 | Muetzel P S | Composition for addition to a central heating system or other closed circuit water system |
| WO2003018487A1 (en) * | 2001-08-24 | 2003-03-06 | Dober Chemical Corporation | Sustained release coolant additive compositions |
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
| CN102127768A (en) * | 2010-01-15 | 2011-07-20 | 中国石油化工股份有限公司 | Corrosion inhibitor for inhibiting carbon steel corrosion in acetic acid solution and application thereof |
| CN102557276A (en) * | 2010-12-17 | 2012-07-11 | 上海洗霸科技股份有限公司 | Composite water treatment agent of closed type circulating water system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217807A (en) * | 2015-10-16 | 2016-01-06 | 安徽欣创节能环保科技股份有限公司 | A kind of closed circuit soft water system corrosion inhibiting and descaling agent and using method thereof |
| CN107162224A (en) * | 2017-05-31 | 2017-09-15 | 四川奥恒环保科技有限公司 | A kind of corrosion inhibiting and descaling agent and preparation method thereof |
| CN107311320A (en) * | 2017-06-07 | 2017-11-03 | 上海市环境工程设计科学研究院有限公司 | A kind of antisludging agent and its application that waste water is handled for supercritical Water Oxidation Technology |
| CN107311320B (en) * | 2017-06-07 | 2020-10-09 | 上海市环境工程设计科学研究院有限公司 | Scale inhibitor for treating wastewater by supercritical water oxidation technology and application thereof |
| CN109796086A (en) * | 2017-11-16 | 2019-05-24 | 柳州市皇盛环保科技有限公司 | A kind of scale inhibitor for industrial circulating cooling water |
| CN111233178A (en) * | 2020-02-27 | 2020-06-05 | 威海翔泽新材料科技有限公司 | Phosphorus-free composite cylinder cleaning agent for low-pressure boiler and preparation method thereof |
| CN112299572A (en) * | 2020-10-16 | 2021-02-02 | 三门核电有限公司 | Treatment method of industrial closed cooling water system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102897925A (en) | Corrosion and scale inhibitor | |
| CN104058511A (en) | Non-phosphorus composite corrosion and scale inhibitor used for circulating water | |
| CN103086524B (en) | High-efficiency grey water dispersing agent | |
| CN102560501B (en) | Corrosion inhibitor and its application | |
| CN107114407B (en) | Preparation method and application of nano copper-zinc composite antibacterial material | |
| CN101607765A (en) | Inhibiter | |
| CN1115306C (en) | Corrosion-retarding scale inhibitor for boiler | |
| CN109110933B (en) | Low-phosphorus scale and corrosion inhibitor and preparation method thereof | |
| CN103304045A (en) | Scale and corrosion inhibitor and preparation method thereof | |
| CN105036363A (en) | Composite corrosion inhibitor suitable for desalted water and preparation method | |
| CN105347518A (en) | Corrosion and scale inhibitor for industrial circulating water and preparation method thereof | |
| CN109110935A (en) | A kind of corrosion inhibiting and descaling agent and preparation method thereof for low-hardness low-alkalinity | |
| CN103553219B (en) | Preparation method and application of corrosion and scale inhibitor for ethylene glycol sealed circulating water | |
| CN110143675B (en) | Phosphorus-free pre-filming agent for industrial circulating cooling water system and preparation method thereof | |
| JP5099884B2 (en) | Corrosion inhibitor | |
| CN105906075B (en) | One kind being applied to BF Gas Washing water zero-emission water treatment technology | |
| CN204486734U (en) | A kind of crystallizer cooling water treatment system | |
| CN104140162A (en) | Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof | |
| CN104649422A (en) | Composite scale and corrosion inhibitor applied to boiler closed circulating water system and preparation method thereof | |
| CN110104803A (en) | A kind of environment-friendly composite corrosion and scale inhibitor, method of preparation and use | |
| CN109019883A (en) | Phosphate-free corrosion inhibition antisludging agent and preparation method thereof for Waste Water Reuse technology | |
| CN104451247A (en) | Nano-particle reinforced alloy material with antiscaling function as well as preparation method and application of nano-particle reinforced alloy material | |
| CN102330093A (en) | Corrosion inhibitor for integration-type soft water sealing cooling water circulation system of blast furnace | |
| CN113087170A (en) | Low-phosphorus corrosion-inhibition composite scale inhibitor and application thereof | |
| CN110357278A (en) | A kind of alkaline corrosion inhibitor and its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130130 |