CN1438185A - Green scale corrosion inhibitor - Google Patents
Green scale corrosion inhibitor Download PDFInfo
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- CN1438185A CN1438185A CN 03102873 CN03102873A CN1438185A CN 1438185 A CN1438185 A CN 1438185A CN 03102873 CN03102873 CN 03102873 CN 03102873 A CN03102873 A CN 03102873A CN 1438185 A CN1438185 A CN 1438185A
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- water
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Abstract
The present invention relates to a green antiincrustation corrosion inhibitor. It is formed from (wt%) 10%-35% of polyepoxy sodium succinate (PESA), 0%-35% of sodium wolframate (Na2WO4), 20%-48% of sodium benzoate (NaBz), 0%-5% of benzotriazole (BTA) and 5%-12% of zinc ion (Zn2+). Said invention can be used in industrial circulating water, and can prevent circulating water from producing incrustation, corrosion and algae breeding, as compared with existent product its dose is low, and its antiincrustation and corrosion inhibiting power is strong.
Description
Affiliated technical field
The invention provides a kind of chemical agent, belong to chemical engineering water treatment agent production technical field in order to prevent that industrial cooling circulating water fouling, burn into bacterium algae from growing.
Background technology
Current water resources shortage has become one of China and even global coming crisis in Western sociology, and the utilization ratio of water saving and raising water resources has been imperative, very urgent.Thereby water saving at first will be from the relatively more concentrated industrial or agricultural of water.Because in process water, water coolant accounts for 60%--70% again, undoubtedly, save the key subjects that water coolant becomes the industry water saving.Water coolant can be divided into two kinds of once-through cooling water and recirculated cooling waters.The former directly discharges being used for cooled water, thereby water loss is big; Recirculated cooling water is used further to cooling after then the cooled water of water being lowered the temperature by cooling tower.After the cooling water circulation use, because the continuous evaporation of moisture, add with the salt that makes in the water that fully contacts of air and be concentrated, bacterium and dissolved oxygen content increase greatly, cause recirculated cooling water serious fouling, corrosion and bacterium algae to occur and grow three big disadvantages, the heat exchange efficiency of system is greatly reduced, and maintenance is frequent, even normally carrying out of producing of serious threat.For this reason, must in water coolant, add Scale inhibitors, inhibiter, Biocidal algae-killing agent and other relevant supporting clean-out system, prefilming agent, flocculation agent etc.This adding chemical agent is referred to as the Water Treatment technology to prevent the technological package that recirculated water fouling, burn into bacterium algae grow.The Water Treatment technology is the effective means that current industry water saving of generally acknowledging is both at home and abroad the most generally used.
In the middle of prior art, water quality stabilizer as the industrial cycle cooling circulating water, the phosphorus line formulation result of use is good, moderate, thereby extremely various countries' favor, but phosphorus line formulation causes easily that in use the bacterium algae grows, and the discharging of simultaneously a large amount of phosphorus-containing wastewaters has also brought the eutrophication of water body, the environmental problems such as red tide of seawater thereupon.Therefore develop non-phosphorus system, novel green water conditioner nuisanceless, easy degraded will become the developing direction of novel water conditioner.
In the exploitation of current novel green phosphate-free water treatment agent, existing poly aspartic acid emerges.Since 1998, domestic East China University of Science has carried out abundant research to the aspects such as synthetic, scale-inhibiting properties of poly aspartic acid (PASP).Experiment finds under the situation of low dosage, and molecular weight is that 4000 poly aspartic acid has the best scale-inhibiting properties.Poly aspartic acid can be applicable to the higher water system of high-calcium ionic, high temperature and pH value.Independent poly aspartic acid has good scale-inhibiting properties, but corrosion inhibition is relatively poor.
Polyepoxy sodium succinate (PESA) also is a kind of Green Chemistry water conditioner that progressively grew up last year.It has higher scale-inhibiting properties, without phosphorus no nitrogen, advantage such as biodegradable.The scale-inhibiting properties of polyepoxy sodium succinate obviously is better than sodium polyacrylate (PAAS), polymaleic acid sodium (HPMA) and tartrate (tartaric acid).Polyepoxy sodium succinate also has certain corrosion inhibition separately, but its corrosion inhibition is compared relatively poor with other organic phosphonate inhibiter.
Currently abroad the research of poly aspartic acid and polyepoxy sodium succinate is mainly concentrated on aspects such as synthesis technique, scale-inhibiting properties, to its corrosion inhibition especially synergistic slow corrosion performance primary study not.But development of modern industry often requires novel water conditioner to possess functions such as comprehensively comprising scale inhibition, inhibition, sterilization, and the independent corrosion mitigating effect of poly aspartic acid and polyepoxy sodium succinate and unsatisfactory, therefore seeking to develop the water conditioner that one or more and poly aspartic acid and polyepoxy sodium succinate have good synergistic slow corrosion effect will be a very significant problem.
Domestic East China University of Science was once studied the synergistic slow corrosion effect of poly aspartic acid, experiment is found to exist good synergistic slow corrosion effect between poly-asparagus fern ammonia and sodium wolframate, zine ion, the benzotriazole, and successfully to develop novel green tungsten be composite water disposal agent.But also there is some weak point in this composite water disposal agent and since its efficiently corrosion mitigating effect depend on high concentration of citric sodium, thereby the overall consumption of compound is bigger than normal, has increased the cost of water treatment.
Summary of the invention
The present invention is on the basis of having consulted a large amount of documents, mutually composite in line with anodic corrosion inhibitor with the cathode type inhibiter, passivation membranous type inhibiter and the collaborative mutually principle of absorption membranous type inhibiter, through test of many times, selecting by polyepoxy sodium succinate, sodium wolframate, Sodium Benzoate, zinc sulfate, these five kinds of medicaments of BTA is the green scale and corrosion inhibitor that raw material is formed.
The technical solution adopted for the present invention to solve the technical problems is: a kind of green scale and corrosion inhibitor is characterized in that: it is made up of each component of following weight percent:
Polyepoxy sodium succinate (PESA) 10%--35%, sodium wolframate (Na
2WO
4) 0%--35%, Sodium Benzoate (NaBz) 20%--48%, benzotriazole (BTA) 0%--5%, zine ion (Zn
2+) 5%--12%.
Beneficial effect of the present invention: the without phosphorus no nitrogen of polyepoxy sodium succinate that contains in (1) prescription, biodegradable, have higher scale-inhibiting properties, can be applicable in the water quality of high rigidity, high basicity.(2) tungstate in the prescription has higher corrosion inhibition, can be applied in the condition of water quality of high pH value, high chloride ion concentration.(3) all have the obvious synergistic inhibition effect between the zine ion in the prescription and polyepoxy sodium succinate, Sodium Benzoate and the tungstate, thereby reduce the consumption of medicament such as tungstate greatly.(4) nontoxic, the anti-spot corrosion of Sodium Benzoate in the prescription, and can not promote local corrosion during with quantity not sufficient as other anodic corrosion inhibitor, Sodium Benzoate also has certain sterilization algae removal effect in addition.(5) benzotriazole in the prescription is a kind of special corrosion inhibitor of copper, also exists good synergistic slow corrosion effect between it and tungstate ion, the zine ion three, and is very strong to the resistibility of oxygenizement.
The present invention adopts RCC-I type rotary hanging plate corrosion test instrument to carry out the inhibition experiment according to " State Standard of the People's Republic of China GB/T18175-2000, the mensuration of water conditioner corrosion inhibition---revolve hanging slice method ".Test piece is the 20# carbon steel, 45 ℃ of humidity, preliminary filming time 24h, working time 48h, rotary hanging plate speed is 75r/min.The scale inhibition experimental technique is main with reference to " State Standard of the People's Republic of China GB/T16632-1996, the mensuration of water conditioner scale-inhibiting properties---tosca method ", and experimentation does not add borax.Test water quality respectively as shown in Table 1 and Table 2, total hardness and total alkalinity are respectively with CaCO
3Meter.
Table 1 inhibition experiment water quality
| Water quality contrast situation | Total hardness mg/L | Total alkalinity mg/L | ?[Ca 2+] ??mg/L | ?[SO 4 2-] ??mg/L | ?[CI -] ??mg/L | ?PH |
| The used water quality of the present invention | ??700 | ??200 | ??200 | ??192 | ??753 | ??7.7 |
| The used water quality of East China University of Science | ??410 | ??202.5 | ??107 | Do not survey | ??175 | ?6.5 |
Table 2 scale inhibition experiment water quality
| Component | Total hardness mg/L | Total alkalinity mg/L | [Ca 2+]mg/L | ????PH |
| Concentration | ????300 | ????300 | ????120 | ????8.0 |
The formula concentration and the experimental result that are adopted in the present invention's experiment are as shown in table 3, and table 4 is tested used formula concentration and experimental result for East China University of Science.
The formula concentration and the experimental result that adopt in table 3 the present invention experiment
| ??PESA ??mg/L | ?Na 2WO 4??mg/L | ??Zn 2+??mg/L | ??NaBz ??mg/L | ??BTA ??mg/L | Erosion rate mm/a | Corrosion inhibition rate % | Scale inhibition performance % | |
| Pre-film | ??100 | ??100 | ??40 | ?100 | ?10 | |||
| Operation | ??10 | ??10 | ??4 | ?10 | ?1 | ?0.0125 | ?98.54 | ?97.24 |
| ??5 | ??5 | ??2 | ?5 | ?1 | ?0.0166 | ?98.06 | ?95.23 |
Inhibition blank assay: 0.8567mm/a
The formula concentration of table 4 East China University of Science and experimental result
| ??PESA ??mg/L | ??Na 2WO 4??mg/L | ?Zn 2+?mg/L | Trisodium Citrate mg/L | ?BTA ?mg/L | Erosion rate mm/a | Corrosion inhibition rate % | Scale inhibition performance % | |
| Pre-film | ??60 | ??150 | ?30 | ?450 | ?15 | |||
| Operation | ??4 | ??10 | ?2 | ?30 | ?1 | ?0.0256 | ?97.25 | ?95.67 |
| ??4 | ??10 | ?0 | ?30 | ?1 | ?0.0171 | ?98.16 | ?91.78 | |
| ??2 | ??10 | ?2 | ?30 | ?1 | ?0.0886 | ?91.36 | ?48.48 |
Inhibition blank assay: 0.9298mm/a
Table 3 and table 4 are compared and can find, in the present invention, polyepoxy sodium succinate still is that the consumption of sodium wolframate is all lower, the consumption of the sodium wolframate of East China University of Science all is greater than 10mg/L usually, even and the consumption of sodium wolframate is reduced to 5mg/L in the present invention, its corrosion inhibition rate still surpasses 98%, corrosion speed only is 0.0166mm/a, the upper limit (0.125mm/a) of allowing far below " Code for design of industrial recirculating cooling water treatment " medium carbon steel wall erosion, therefore the compound among the present invention has low consumption, higher anticorrosion-antiscaling effect and certain sterilization algae removal ability, and environmentally safe, thereby comparatively vast market prospect is arranged.
Embodiment
With operation refrigeration cycle water consumption is 1000m
3Be example, equipment at first needs pre-film after cleaning, and puts into 100m in advance during film earlier
3Recirculated water, add liquid polyepoxy sodium succinate 5000g, Na then successively
2WO
42H
2O 5000g, BTA 1000g adds ZnSO again after stirring
47H
2O 8830g (Zn
2+2000g), pre-film continues to add water to 1000m after 24 hours again
3Just can bring into operation.
Claims (1)
1, a kind of green scale and corrosion inhibitor is characterized in that: it is made up of each component of following weight percent: polyepoxy sodium succinate (PESA) 10%--35%, sodium wolframate (Na
2WO
4) 0%--35%, Sodium Benzoate (NaBz) 20%--48%, benzotriazole (BTA) 0%--5%, zine ion (Zn
2+) 5%--12%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03102873 CN1438185A (en) | 2003-01-25 | 2003-01-25 | Green scale corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03102873 CN1438185A (en) | 2003-01-25 | 2003-01-25 | Green scale corrosion inhibitor |
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| Publication Number | Publication Date |
|---|---|
| CN1438185A true CN1438185A (en) | 2003-08-27 |
Family
ID=27673877
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|---|---|---|---|
| CN 03102873 Pending CN1438185A (en) | 2003-01-25 | 2003-01-25 | Green scale corrosion inhibitor |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315741C (en) * | 2005-01-13 | 2007-05-16 | 北京联合大学生物化学工程学院 | Biodegradable green compounded water treatment agent for delayed corrosion and blocking dirty, and preparation method |
| CN1321077C (en) * | 2003-11-12 | 2007-06-13 | 中国石油化工股份有限公司北京燕山分公司研究院 | Composite scale-proof corrosion inbibitor containing poly epoxy succinic acid and its use |
| CN100357199C (en) * | 2006-05-11 | 2007-12-26 | 同济大学 | Green environment-protective composite slow-corrosion scale resistor for circulated cooling-water treatment |
| CN100371267C (en) * | 2005-07-27 | 2008-02-27 | 上海电力学院 | Corrosion inhibitor of copper-zinc alloy water treatment |
| CN100398698C (en) * | 2005-05-27 | 2008-07-02 | 北京化工大学 | Method for preparing anti-corrosion film on metal surface |
| CN100509654C (en) * | 2004-08-31 | 2009-07-08 | 中国石化北京燕化石油化工股份有限公司 | Low-phosphorus composite antiincrustation corrosion inhibitor and use for water treatment |
| CN103663738A (en) * | 2013-11-21 | 2014-03-26 | 青岛佰众化工技术有限公司 | Composite water treatment agent |
| CN103663739A (en) * | 2013-12-09 | 2014-03-26 | 山东华亚环保科技有限公司 | Composite corrosion and scale inhibitor used for circulating cooling water |
| CN103936177A (en) * | 2014-05-09 | 2014-07-23 | 天津沃川水处理工程技术有限公司 | Non-phosphorus corrosion and scale inhibitor for industrial cooling water system as well as preparation method and application thereof |
| CN104152885A (en) * | 2014-08-08 | 2014-11-19 | 上海新大余氟碳喷涂材料有限公司 | Additive for surface chromate-free passivation treating fluid of aluminum and aluminum alloy, and application method of additive |
| CN104649427A (en) * | 2013-11-22 | 2015-05-27 | 冯克颖 | Heating energy-saving heat medium |
| WO2015101124A1 (en) * | 2014-01-03 | 2015-07-09 | 广州特种承压设备检测研究院 | Phosphorous-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning, and method of preparing said inhibitor |
| CN106082461A (en) * | 2016-07-30 | 2016-11-09 | 山东胜伟园林科技有限公司 | The application in salt discharge hidden pipe of a kind of antisludging agent suppressing algae infestation |
| CN111039423A (en) * | 2019-12-21 | 2020-04-21 | 福州利嘉特水处理环保工程有限公司 | Antiscaling agent for circulating cooling water treatment and preparation method thereof |
| CN115094406A (en) * | 2022-06-20 | 2022-09-23 | 邢台旭阳科技有限公司 | Non-phosphorus prefilming agent and its preparation method and application |
-
2003
- 2003-01-25 CN CN 03102873 patent/CN1438185A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321077C (en) * | 2003-11-12 | 2007-06-13 | 中国石油化工股份有限公司北京燕山分公司研究院 | Composite scale-proof corrosion inbibitor containing poly epoxy succinic acid and its use |
| CN100509654C (en) * | 2004-08-31 | 2009-07-08 | 中国石化北京燕化石油化工股份有限公司 | Low-phosphorus composite antiincrustation corrosion inhibitor and use for water treatment |
| CN1315741C (en) * | 2005-01-13 | 2007-05-16 | 北京联合大学生物化学工程学院 | Biodegradable green compounded water treatment agent for delayed corrosion and blocking dirty, and preparation method |
| CN100398698C (en) * | 2005-05-27 | 2008-07-02 | 北京化工大学 | Method for preparing anti-corrosion film on metal surface |
| CN100371267C (en) * | 2005-07-27 | 2008-02-27 | 上海电力学院 | Corrosion inhibitor of copper-zinc alloy water treatment |
| CN100357199C (en) * | 2006-05-11 | 2007-12-26 | 同济大学 | Green environment-protective composite slow-corrosion scale resistor for circulated cooling-water treatment |
| CN103663738A (en) * | 2013-11-21 | 2014-03-26 | 青岛佰众化工技术有限公司 | Composite water treatment agent |
| CN104649427A (en) * | 2013-11-22 | 2015-05-27 | 冯克颖 | Heating energy-saving heat medium |
| CN103663739A (en) * | 2013-12-09 | 2014-03-26 | 山东华亚环保科技有限公司 | Composite corrosion and scale inhibitor used for circulating cooling water |
| WO2015101124A1 (en) * | 2014-01-03 | 2015-07-09 | 广州特种承压设备检测研究院 | Phosphorous-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning, and method of preparing said inhibitor |
| CN103936177A (en) * | 2014-05-09 | 2014-07-23 | 天津沃川水处理工程技术有限公司 | Non-phosphorus corrosion and scale inhibitor for industrial cooling water system as well as preparation method and application thereof |
| CN104152885A (en) * | 2014-08-08 | 2014-11-19 | 上海新大余氟碳喷涂材料有限公司 | Additive for surface chromate-free passivation treating fluid of aluminum and aluminum alloy, and application method of additive |
| CN104152885B (en) * | 2014-08-08 | 2016-08-24 | 上海新大余氟碳喷涂材料有限公司 | Aluminum and the additive of alloy surface non-chromium passivation treatment fluid thereof and using method thereof |
| CN106082461A (en) * | 2016-07-30 | 2016-11-09 | 山东胜伟园林科技有限公司 | The application in salt discharge hidden pipe of a kind of antisludging agent suppressing algae infestation |
| CN111039423A (en) * | 2019-12-21 | 2020-04-21 | 福州利嘉特水处理环保工程有限公司 | Antiscaling agent for circulating cooling water treatment and preparation method thereof |
| CN115094406A (en) * | 2022-06-20 | 2022-09-23 | 邢台旭阳科技有限公司 | Non-phosphorus prefilming agent and its preparation method and application |
| CN115094406B (en) * | 2022-06-20 | 2023-10-20 | 邢台旭阳科技有限公司 | Phosphorus-free prefilming agent and preparation method and application thereof |
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