CN100564283C - A kind of highly effective corrosion and scale inhibition disperser - Google Patents
A kind of highly effective corrosion and scale inhibition disperser Download PDFInfo
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- CN100564283C CN100564283C CNB2007101579651A CN200710157965A CN100564283C CN 100564283 C CN100564283 C CN 100564283C CN B2007101579651 A CNB2007101579651 A CN B2007101579651A CN 200710157965 A CN200710157965 A CN 200710157965A CN 100564283 C CN100564283 C CN 100564283C
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- water
- scale inhibition
- disodium edta
- diphosphonic acid
- compound
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Abstract
The present invention relates to a kind of highly effective corrosion and scale inhibition disperser, its main points are that component and weight proportion are hydroxy ethylene diphosphonic acid: disodium EDTA: zinc sulfate=6: 3: 1, add the compound manganous sulfate of stating whole raw material weights 0.001.Preparation method is: under normal temperature, agitation condition, successively raw material hydroxy ethylene diphosphonic acid, disodium EDTA, zinc sulfate are added in the container by above-mentioned weight proportion, add the compound manganous sulfate at last.The invention solves in the prior art water treatment agent and only be applicable to that water at low temperature handles, be not suitable for high-temperature water and handle problems.This product is widely used in circulating water quality stabilizing treatment such as metallurgy, oil, chemical industry, generating.
Description
Technical field
The present invention relates to a kind of corrosion and scale inhibition disperser that a kind of industrial circulating water is used.
Background technology
The recirculated cooling water treatment technology is early 1930s to begin to develop abroad.
The thirties in 20th century, along with the expansion of commercial production scale, recirculated water becomes one of industrial main water, and fouling is a principal contradiction.Lalngelier in 1936 have proposed the notion of saturation index, begin to adopt the generation of poly-phosphate and natural organic matter control hard scale, but effect are relatively poor in hard, the high buck of height.
Early 1960s owing to adopt the pH value control fouling of the mineral acid control water of high concentration multiple, can cause the corrosion aggravation, thus use chromic salt-poly-phosphate active salt inhibition instead, and use the chlorine sterilization.The Water Treatment technology is tending towards perfect.
Phase late 1960s is because the Cr of EPA standard regulation in 1970 drainage water
3+Should be below 0.5mg/L, making chromium is that water technology is repelled, and begins to occur poly-phosphate, polycarboxylic acid-based inhibitor, inhibiter.
The middle and later periods seventies 20th century,, organic phosphonate, Organophosphonate have been developed, pH value (7.0～7.5) treatment technology in the employing at the problem of poly-phosphate facile hydrolysis, generation calcium phosphate scale.
The eighties in 20th century, at middle pH value, the difficult disadvantage of organic phosphino polycarboxylic acid treatment process control, use the basic treatment technology of nature pH value, add the various compounds of polycarboxylic acid efficiently.Begin to occur all-organic formula.
Basically be the continuity of the eighties nineties in 20th century, more, organic phosphonate and polyphosphoric acid have more efficiently just occurred, and aspect the environmental friendliness performance of product the bigger research effort of input.
The water technology of China is introduced the chemical industry technology since the 1950's from USSR (Union of Soviet Socialist Republics) and has promptly been used inorganic phosphate, introduces the U.S. shellfish technology of (Betz) company now the seventies, i.e. the pH neutral treatment technology of organic phosphonate+poly carboxylic acid.To the beginning of the eighties, introduce the phosphonic acid ester water technology from U.S. Nalco company, introduce T-225 alkaline water treatment formulations again from the Castanea crenata field.On this basis, China has developed the water technology and the water treatment agent of production domesticization voluntarily.Tianjin chemical research institute, Nanjing University of Chemical Technology, East China University of Science, Nanjing University, Lanzhou chemical machinery research institute are the research institutes that participates in water treatment agent in the first batch, and they are obvious to all to the contribution of China's water conditioner.
The dirt dispersion agent principal item of domestic production sees Table 1.
The domestic dirt dispersion agent principal item of having produced of table 1.
| Sequence number | The compound title | Major dimension | Main characteristic |
| 1 | Polyacrylic acid (sodium) | Relative molecular weight 2000～6000, solid content 25%～30%, free monomer≤0.5% | Resistance CaCO 3Dirt is good, and is cheap |
| 2 | Hydrolytic polymaleic anhydride | Relative molecular weight 300～700, solid content 50%, bromine number＜160mg/L | Resistance CaCO 3Dirt is good, and it is softer to generate dirt, and heatproof is below 70 ℃ |
| 3 | Copolymer of maleic anhydride and acrylic acid | Relative molecular weight 2000～6000, solid content 30%, bromine number＜160mg/L | Resistance CaCO 3Dirt is good, and it is softer to generate dirt, and heatproof is below 70 ℃, and price is low |
| 4 | Acrylic acid-methacrylate copolymer | Relative molecular weight 2000～6000, solid content 30%, free monomer≤0.5% | Resistance CaCO 3Dirt and Ca (PO 4) 3Dirt is effective |
| 5 | Vinylformic acid-methacrylic ester-acrylic acid hydroxy alkyl ester multipolymer | Relative molecular weight 2000～6000, solid content 30%, free monomer≤0.5% | Resistance CaCO 3Dirt and Ca (PO 4) 3Dirt is effective |
| 6 | The phosphine polymers of carboxylic acid | Relative molecular weight 2000～6000, solid content 30% | Have scale inhibition and corrosion mitigating effect concurrently, retentivity is good |
| 7 | The sulfonic group poly carboxylic acid | Relative molecular weight 3000～6000, solid content 30% | Have scale inhibition, dissemination concurrently, anti-iron ion |
In a word, the temperature tolerance of these Scale inhibitorss of above-mentioned domestic production is poor, and the highest Applicable temperature is 70 ℃, does not satisfy industrial actual requirement, and the Scale inhibitors that goes out to need as the steel rolling nozzle needs anti-200 ℃ high temperature.
The inhibiter principal item of domestic production sees Table 2.
The domestic main inhibiter of having produced of table 2
| Sequence number | The product code name | Compound |
| 1 | HEDP | Hydroxy ethylene diphosphonic acid |
| 2 | ATMP | Amino Trimethylene Phosphonic Acid |
| 3 | EDTMP | Ethylenediamine tetramethylene phosphonic acid |
| 4 | DTPMP | Diethylenetriamine pentamethylene phosphonic acids |
| 5 | POCA | Phosphono-carboxylic acids |
| 6 | PBTC | The phosphonic acid butane tricarboxylic acid |
| 7 | HPA | 2-hydroxyl-phosphine acyl acetic acid (2-hydroxyl phosphine acetate) |
| 8 | PAPEMP | Polyamino polyether methylene phosphonic acids |
| 9 | POE | The hexavalent alcohol phosphonic acid ester |
| 10 | POE | The trivalent alcohol phosphonic acid ester |
| 11 | Poly-phosphate | Tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 |
| 12 | MBT | 2-mercaptobenzothiazole |
| 13 | MTA | Benzotriazole |
Above-mentioned inhibiter mostly is the phosphorated organic compound, and the Cmin of Ying Yonging can reach 20mg/L at the scene, and phosphorus is one of eutrophication material of water body, belongs to the product that country's restriction is used, and the possibility of forbidding is arranged in the future.
Along with the deep development of treatment of cooling water technology, more and more to the demand of inhibiter, Scale inhibitors, also more and more higher to its performance demands.Therefore, at different quality, different technology conditions, different material and different requirements, the chemical agent of developing various efficient compound slow corrosions, scale inhibition becomes current hot issue both domestic and external.
At present, this series products of domestic production mostly is multipolymer, uses treatment effect better under normal temperature condition, but runs under the hot conditions, and then multipolymer loses drug effect easy the decomposition, makes the water conditioning deleterious, does not reach inhibition, scale inhibition dissemination.
Summary of the invention
Problem at existing corrosion and scale inhibition disperser exists the invention provides a kind of adaptable corrosion and scale inhibition disperser, can make water treatment procedure be issued to effective inhibition in hot conditions, and the effect of scale inhibition dispersive does not make the medicine decomposition failure.
The component of corrosion and scale inhibition disperser of the present invention is: hydroxy ethylene diphosphonic acid, disodium EDTA, zinc sulfate, its each composition weight proportioning is: hydroxy ethylene diphosphonic acid: disodium EDTA: zinc sulfate=6: 3: 1 also will add the compound manganous sulfate of whole raw material weights 0.001 in addition in above-mentioned raw materials.
Producing of above-mentioned corrosion and scale inhibition disperser is: under normal temperature, agitation condition, successively with raw material hydroxy ethylene diphosphonic acid, disodium EDTA, zinc sulfate 6: 3: 1 by weight ratio, add in the container compositely, add the compound manganous sulfate of above-mentioned whole raw material weight 0.001 again.
Corrosion and scale inhibition disperser of the present invention belongs to a kind of chemical agent of efficient compound slow corrosion scale inhibition compared with prior art, has solved in the prior art water treatment agent and only has been applicable to that water at low temperature handles, and is not suitable for high-temperature water and handles problems.Medicament of the present invention is used for Static Water when handling, and top temperature can reach 90 ℃, and dynamically top temperature can reach 200 ℃ during water treatment.
This product is widely used in industrial circulating water Handling of Stabilizing Water Quality such as metallurgy, oil, chemical industry, generating.
Embodiment
Choose raw material hydroxy ethylene diphosphonic acid, disodium EDTA and zinc sulfate, its purity all requires to reach more than the 95wt%, (above-mentioned raw materials is the market sale product).It produces step: take by weighing hydroxy ethylene diphosphonic acid 60g earlier, disodium EDTA 30g, zinc sulfate 10g, under normal temperature, agitation condition, add successively in the beaker, it is composite to add the 0.1g manganous sulfate at last, obtains the corrosion and scale inhibition disperser of requirement of the present invention.
To the chamber static simulation experiment that experimentizes of the above-mentioned medicament for preparing, handling water temperature is 90 ℃, and top temperature can reach 200 ℃ during the dynamic experiment water treatment.To survey performance index as follows:
Former water calcium is hard: 389mg/L, calcium is hard after the dosing: 79mg/L, scale inhibition performance is (to CaCO
3) 79%, corrosion rate (lacing film 72h): do not have obviously corrosion.
Claims (1)
1, a kind of highly effective corrosion and scale inhibition disperser, its component has hydroxy ethylene diphosphonic acid, it is characterized in that also having disodium EDTA and zinc sulfate in the component, its weight proportion is a hydroxy ethylene diphosphonic acid: disodium EDTA: zinc sulfate=6: 3: 1 adds the compound manganous sulfate of above-mentioned whole raw material gross weights 0.001 again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101579651A CN100564283C (en) | 2007-11-06 | 2007-11-06 | A kind of highly effective corrosion and scale inhibition disperser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101579651A CN100564283C (en) | 2007-11-06 | 2007-11-06 | A kind of highly effective corrosion and scale inhibition disperser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101177323A CN101177323A (en) | 2008-05-14 |
| CN100564283C true CN100564283C (en) | 2009-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101579651A Expired - Fee Related CN100564283C (en) | 2007-11-06 | 2007-11-06 | A kind of highly effective corrosion and scale inhibition disperser |
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| CN (1) | CN100564283C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2440731C2 (en) * | 2010-02-24 | 2012-01-27 | Юрий Аглямович Гарипов | Suspension concentrate of herbicidal composition and preparation method thereof |
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2007
- 2007-11-06 CN CNB2007101579651A patent/CN100564283C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 高温水中阻垢剂阻垢性能及影响因素. 熊金平，姜孔桥，孙飞鹏.北京化工大学学报，第28卷第1期. 2001 |
| 高温水中阻垢剂阻垢性能及影响因素. 熊金平，姜孔桥，孙飞鹏.北京化工大学学报，第28卷第1期. 2001 * |
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| Publication number | Publication date |
|---|---|
| CN101177323A (en) | 2008-05-14 |
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Granted publication date: 20091202 Termination date: 20131106 |