CN103420497A - Non-phosphorous corrosion and scale inhibitor containing lignosulfonate and application thereof - Google Patents
Non-phosphorous corrosion and scale inhibitor containing lignosulfonate and application thereof Download PDFInfo
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- CN103420497A CN103420497A CN2013103751366A CN201310375136A CN103420497A CN 103420497 A CN103420497 A CN 103420497A CN 2013103751366 A CN2013103751366 A CN 2013103751366A CN 201310375136 A CN201310375136 A CN 201310375136A CN 103420497 A CN103420497 A CN 103420497A
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Abstract
The invention discloses a non-phosphorous corrosion and scale inhibitor containing lignosulfonate and application of the non-phosphorous corrosion and scale inhibitor containing the lignosulfonate in industrial circulating cooling water. The non-phosphorous corrosion and scale inhibitor containing the lignosulfonate comprises the lignosulfonate, polyepoxysuccinic acid, acrylic acid-2-acrylamido-2-methylpropane sulfonic acid copolymer, zinc salt, azole compounds and water. The non-phosphorous corrosion and scale inhibitor containing the lignosulfonate comprises, by mass, 30%-40% of the lignosulfonate, 15%-20% of the polyepoxysuccinic acid, 10%-15% of the acrylic acid-2-acrylamido-2-methylpropane sulfonic acid copolymer, 5%-15% of the zinc salt, 1%-2% of the azole compounds, and the balance the water. The non-phosphorous corrosion and scale inhibitor containing the lignosulfonate is applied to an industrial circulating cooling water system. Under the water quality shown in the embodiments, when the dosage of the non-phosphorous corrosion and scale inhibitor containing the lignosulfonate is 50-70mg/L, the corrosion rate of carbon steel is smaller than 0.075mm/a, the scale inhibition rate is larger than 98%, the non-phosphorous corrosion and scale inhibitor containing the lignosulfonate is free of phosphorus, biodegradation performance is good, cost of follow-up processing is reduced, and the non-phosphorous corrosion and scale inhibitor containing the lignosulfonate is excellent in performance and protects the environment.
Description
Technical field
The present invention relates to a kind of water treatment agent for industrial circulating cooling water system, concrete is a kind of phosphate-free corrosion inhibition antisludging agent containing sulfonated lignin.
Background technology
The water resources in china total amount is 2.8 tcms, accounts for 7% of World Water total resources, but China per capita water resources only have 2304 m
3/ people, belong to the country of water scarcity.Water shortage problem is day by day serious, and this has become the large obstacle that restriction China realizes Sustainable development.China city is because of lack of water, and annual financial loss reaches more than 1,200 hundred million yuans, so water saving is very urgent.People, in water, except agricultural is the large open air of water, be exactly secondly process water, and industrial cooling water account for 70% left and right of process water total amount.Therefore, the industrial repeating utilization factor that will adopt technology on circulating cooling water treatment to improve water, save a large amount of process waters.
The circulating water water system usually faces the problem of equipment corrosion and fouling, to industrial production, has brought and has had a strong impact on, and causes heavy economic losses to enterprise and country.People study discovery, in circulating water system, use high efficiency corrosion inhibiting scale retardant can effectively prevent the erosion and encrustation of pipeline, not only can reduce enterprise's production cost, have kept the safe operation of circulating water system simultaneously.Due to have chemical stability good, high temperature resistant, obvious threshold effect and the good advantages such as synergistic effect are arranged, organic phosphine is that water treatment agent is widely applied in recent years.But the phosphorous meeting of medicament causes the eutrophication in waters on every side, causes the excessive multiplication of bacterium algae, thereby causes pollution of waterhead.Therefore, organic phosphine is that the use of water treatment agent will progressively be restricted, and developing the novel corrosion-retarding Scale inhibitors without phosphorus, that biodegradability is good has become the developing direction of water treatment agent instantly.Chinese patent (application number 201110443255.1) discloses a kind of phosphate-free corrosion inhibition antisludging agent that is applicable to industrial circulating cooling water, N-alkyl-amino soap (sylvite or sodium salt) of N-fat phthalidyl, light base shuttle hydrochlorate (Sunmorl N 60S, Sodium lactobionate, oxysuccinic acid are received), shuttle acid copolymer (vinylformic acid-AMPS-methyl propane sulfonic acid multipolymer, polymaleic acid, poly aspartic acid, poly-epoxy succinic acid), metal-salt (zinc salt, chromic salt, silicate, molybdate, tungstate) and water, consists of.Chinese patent (application number 201110443253.2) provides by Sodium orthomolybdate, zinc salt, Citrate trianion, trolamine, the proud triazole of benzene, poly aspartic acid, poly-epoxy and has bluffed and clap the phosphate-free corrosion inhibition antisludging agent that acid, vinylformic acid sulfonic acid terpolymer, solid base are main component.Although above-mentioned phosphate-free corrosion inhibition antisludging agent is not phosphorous, environmentally friendly, there is good corrosion and scale inhibition performance, formula forms more complicated, and cost is higher, is unfavorable for promoting the use of.
Summary of the invention
The object of the present invention is to provide a kind of phosphate-free corrosion inhibition antisludging agent and application thereof that is applicable to process industrial circulating cooling water system, can be good at fouling and etching problem that the operation of inhibition system produces, nontoxic cheapness, simultaneously environmentally friendly, avoided the pollution of waterhead problem.
The technical solution that realizes the object of the invention is:
A kind of without phosphorus composite slow-corrosion scale resistor containing sulfonated lignin, described phosphate-free corrosion inhibition antisludging agent is comprised of sulfonated lignin, poly-epoxy succinic acid, AA/AMPS multipolymer, zinc salt, azole compounds and water, the shared mass percent of each component respectively:
Sulfonated lignin 30% ~ 40%,
Poly-epoxy succinic acid 15% ~ 20%,
AA/AMPS copolymer 1 0% ~ 15%,
Zinc salt 5% ~ 15%,
Azole compounds 1% ~ 2%,
All the other are water.
Wherein, sulfonated lignin select molecular weight ranges in 2000 ~ 3000 sodium lignosulfonate or ammonium lignosulphonate.Zinc salt is selected from zinc chloride or Zinc Sulphate Heptahydrate.Azole compounds is selected from one or several in benzotriazole, methyl benzotriazazole or mercaptobenzothiazole.
Prepared by above-mentioned phosphate-free corrosion inhibition antisludging agent: by sulfonated lignin, poly-epoxy succinic acid, AA/AMPS multipolymer, zinc salt, azole compounds and water, add successively in container in proportion by the following method, at room temperature stir liquid to be mixed clarification and obtain product during without insoluble impurities 1 ~ 2 hour.
Described phosphate-free corrosion inhibition antisludging agent is applicable to industrial circulating cooling water, and under the embodiment condition of water quality, when added amount of chemical is 50 ~ 70mg/L, the corrosion of carbon steel rate is less than the 0.075mm/a of GB regulation, and scale inhibition performance reaches more than 98%.
The principle of the invention is as follows:
(1) sulfonated lignin (for example sodium lignosulfonate) in the formula have good scale inhibition and dispersion performance with poly-epoxy succinic acid, the two is composite, there is very strong sequestering action to causing dirty metal ion, by dissemination be suppressed to the growth of dirty crystal and can finely prevent the scaling salt classes precipitations such as calcium carbonate, calcium sulfate, barium sulfate.(2) zinc salt in the formula, zinc chloride for example, in water with Zn (OH)
2Thereby form forms precipitation membrane protection metal on surface, metallic cathode district.Sulfonated lignin and zinc salt are composite, have certain chelating, stablize Zn
2+Effect, self can form adsorption film in metallic surface, plays the inhibition synergism simultaneously.(3) AA/AMPS multipolymer and zinc salt are composite, not only can play and stablize Zn
2+Effect, can also play the scale inhibition dissemination.(4) the azole salt in the formula, for example benzotriazole (BTA), have good corrosion inhibition to copper and alloy.
Compared with prior art, its remarkable advantage is in the present invention: (1) is not phosphorous, and biodegradability is good, to the environment nontoxic pollution-free; (2) to be better than phosphorus be water conditioner to anticorrosion-antiscaling effect; (3) raw material sources are abundant, and preparation technology is simple, and cost is low; (4) when a kind of without phosphorus composite slow-corrosion scale resistor containing sulfonated lignin of the present invention is applied in industrial circulating cooling water system, under the embodiment condition of water quality, when added amount of chemical is 50 ~ 70mg/L, the corrosion of carbon steel rate is less than the 0.075mm/a of GB regulation, and scale inhibition performance reaches more than 98%.
Embodiment
Below respectively organize the moisturizing water quality of using in embodiment as shown in table 1.
Table 1 is respectively organized the moisturizing water quality of embodiment
Embodiment 1
Reagent combination: sodium lignosulfonate accounts for 30%, and poly-epoxy succinic acid accounts for 15%, AA/AMPS copolymer 1 0%, and Zinc vitriol accounts for 15%, and benzotriazole accounts for 2%, and water accounts for 28%.
Moisturizing water quality: the moisturizing of Henan Jiaozuo Wanfang power plant, added amount of chemical is 60mg/L.
The scale inhibition experiment: measure scale inhibition performance by Bubbling method.Add medicament after concentrated 1.5 times of test water, under 60 ℃ of test temperatures, start experiment, accelerate air and blast speed and be concentrated into 5 times and keep 6h.The measuring scale inhibition performance is 99%.
Corrosion experiment: measure corrosion rate by standard rotary hanging plate method.Add medicament toward test water, under 50 ℃ of test temperatures, start experiment, then be concentrated into 5 times and keep 72h.It is 0.023mm/a that measuring obtains A3 carbon steel dosing corrosion rate.
Embodiment 2
Reagent combination: sodium lignosulfonate accounts for 30%, and poly-epoxy succinic acid accounts for 20%, AA/AMPS copolymer 1 0%, and Zinc vitriol accounts for 12%, and benzotriazole accounts for 1.5%, and water accounts for 26.5%.
Moisturizing water quality: Tengzhou Sheng Long coke-oven plant moisturizing, added amount of chemical is 70mg/L.
The scale inhibition experiment: measure scale inhibition performance by Bubbling method.Under 60 ℃ of test temperatures, toward adding medicament in test water, start experiment, accelerate air and blast speed and be concentrated into 5 times and keep 6h.The measuring scale inhibition performance is 98%.
Corrosion experiment: measure corrosion rate by standard rotary hanging plate method.Add medicament toward test water, under 50 ℃ of test temperatures, start experiment, then be concentrated into 5 times and keep 72h.It is 0.033mm/a that measuring obtains A3 carbon steel dosing corrosion rate.
Embodiment 3
Reagent combination: sodium lignosulfonate accounts for 35%, and poly-epoxy succinic acid accounts for 20%, AA/AMPS copolymer 1 0%, and Zinc vitriol accounts for 12%, and benzotriazole accounts for 1.5%, and water accounts for 21.5%.
Moisturizing water quality: the moisturizing of Wuxi Xi Xing Steel Plant, added amount of chemical is 70mg/L.
The scale inhibition experiment: measure scale inhibition performance by Bubbling method.Add medicament after concentrated 1.5 times of test water, under 60 ℃ of test temperatures, start experiment, accelerate air and blast speed and be concentrated into 5 times and keep 6h.The measuring scale inhibition performance is 98%.
Corrosion experiment: measure corrosion rate by standard rotary hanging plate method.Add medicament in test water, start experiment under 50 ℃ of test temperatures, then be concentrated into 5 times and keep 72h.It is 0.029mm/a that measuring obtains A3 carbon steel dosing corrosion rate.
Embodiment 4
Reagent combination: sodium lignosulfonate accounts for 30%, and poly-epoxy succinic acid accounts for 15%, AA/AMPS copolymer 1 0%, and Zinc vitriol accounts for 15%, and benzotriazole accounts for 2%, and water accounts for 28%.
Moisturizing water quality: the Nanjing tap water, added amount of chemical is 50mg/L.
The scale inhibition experiment: measure scale inhibition performance by Bubbling method.Add medicament after concentrated 1.5 times of test water, under 60 ℃ of test temperatures, start experiment, accelerate air and blast speed and be concentrated into 6 times and keep 6h.The measuring scale inhibition performance is 100%.
Corrosion experiment: measure corrosion rate by standard rotary hanging plate method.Add medicament in test water, start experiment under 50 ℃ of test temperatures, then be concentrated into 6 times and keep 72h.It is 0.021mm/a that measuring obtains A3 carbon steel dosing corrosion rate.
Embodiment 5
Reagent combination: sodium lignosulfonate accounts for 30%, and poly-epoxy succinic acid accounts for 15%, AA/AMPS copolymer 1 0%, and Zinc vitriol accounts for 15%, and benzotriazole accounts for 1.5%, and water accounts for 28.5%.
Moisturizing water quality: Maanshan Iron and Steel Co., Anhui's moisturizing, added amount of chemical is 60mg/L.
The scale inhibition experiment: measure scale inhibition performance by Bubbling method.Add medicament after concentrated 1.5 times of test water, under 60 ℃ of test temperatures, start experiment, accelerate air and blast speed and be concentrated into 5 times and keep 6h.The measuring scale inhibition performance is 99%.
Corrosion experiment: measure corrosion rate by standard rotary hanging plate method.Add medicament in test water, start experiment under 50 ℃ of test temperatures, then be concentrated into 5 times and keep 72h.It is 0.025mm/a that measuring obtains A3 carbon steel dosing corrosion rate.
Claims (6)
1. the without phosphorus composite slow-corrosion scale resistor containing sulfonated lignin, it is characterized in that: described phosphate-free corrosion inhibition antisludging agent is comprised of sulfonated lignin, poly-epoxy succinic acid, AA/AMPS multipolymer, zinc salt, azole compounds and water, the shared mass percent of each component respectively:
Sulfonated lignin 30% ~ 40%,
Poly-epoxy succinic acid 15% ~ 20%,
AA/AMPS copolymer 1 0% ~ 15%,
Zinc salt 5% ~ 15%,
Azole compounds 1% ~ 2%,
All the other are water.
2. phosphate-free corrosion inhibition antisludging agent according to claim 1 is characterized in that: sulfonated lignin select molecular weight ranges in 2000 ~ 3000 sodium lignosulfonate or ammonium lignosulphonate.
3. phosphate-free corrosion inhibition antisludging agent according to claim 1, it is characterized in that: zinc salt is selected from zinc chloride or Zinc Sulphate Heptahydrate.
4. phosphate-free corrosion inhibition antisludging agent according to claim 1, it is characterized in that: azole compounds is selected from one or several in benzotriazole, methyl benzotriazazole or mercaptobenzothiazole.
5. prepared by the following method by phosphate-free corrosion inhibition antisludging agent according to claim 1: by sulfonated lignin, poly-epoxy succinic acid, AA/AMPS multipolymer, zinc salt, azole compounds and water, add successively in container in proportion, at room temperature stir liquid to be mixed clarification and obtain product during without insoluble impurities 1 ~ 2 hour.
6. a kind of phosphate-free corrosion inhibition antisludging agent containing sulfonated lignin as claimed in claim 1, its application characteristic is: be applicable to industrial circulating cooling water, under the embodiment condition of water quality, when added amount of chemical is 50 ~ 70mg/L, the corrosion of carbon steel rate is less than the 0.075mm/a of GB regulation, and scale inhibition performance reaches more than 98%.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964590A (en) * | 2014-05-16 | 2014-08-06 | 山东大学 | Environment-friendly efficient scale inhibitor of bittern |
| CN104058511A (en) * | 2014-06-16 | 2014-09-24 | 淄博海星环保科技有限公司 | Non-phosphorus composite corrosion and scale inhibitor used for circulating water |
| CN104326577A (en) * | 2014-11-24 | 2015-02-04 | 邢台旭阳煤化工有限公司 | Composite corrosion/scale inhibitor for circulating cooling water treatment |
| CN105000683A (en) * | 2015-07-10 | 2015-10-28 | 杨红微 | Phosphorus-free, green and environment-friendly slow-release scale inhibitor |
| CN105565513A (en) * | 2014-10-10 | 2016-05-11 | 中国石油化工股份有限公司 | Composite corrosion and scale inhibitor and its preparation method and use |
| CN105753075A (en) * | 2015-07-31 | 2016-07-13 | 南通德安化工有限公司 | Novel efficient and environment-friendly water treatment agent |
| CN106477737A (en) * | 2015-08-25 | 2017-03-08 | 南京理工大学 | A kind of continuous cast mold fIthy circulating system highly effective corrosion and scale inhibition disperser |
| CN106745856A (en) * | 2017-03-27 | 2017-05-31 | 刘雄杰 | A kind of without phosphorus slow-release scale inhibitor |
| CN109928522A (en) * | 2019-04-17 | 2019-06-25 | 南京广全环保技术服务有限公司 | Compound phosphate-free corrosion inhibition antisludging agent and preparation method thereof |
| CN110040857A (en) * | 2019-04-12 | 2019-07-23 | 嘉兴沃特泰科环保科技有限公司 | A kind of phosphorus-free green corrosion inhibiting and descaling agent and preparation method thereof |
| CN111115856A (en) * | 2019-12-25 | 2020-05-08 | 河南普绿环保科技有限公司 | Green phosphorus-free scale and corrosion inhibition material for circulating cooling water |
| CN112645457A (en) * | 2019-10-11 | 2021-04-13 | 西南科技大学 | Environment-friendly corrosion and scale inhibitor for chromium salt wastewater evaporation system |
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| CN101066811A (en) * | 2007-06-15 | 2007-11-07 | 武汉金坡化工科技有限公司 | No-phosphate corrosion and scale inhibitor and its application |
| CN101525185A (en) * | 2009-04-13 | 2009-09-09 | 李洪社 | Phosphorus-free corrosion and scale inhibitor and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964590A (en) * | 2014-05-16 | 2014-08-06 | 山东大学 | Environment-friendly efficient scale inhibitor of bittern |
| CN104058511A (en) * | 2014-06-16 | 2014-09-24 | 淄博海星环保科技有限公司 | Non-phosphorus composite corrosion and scale inhibitor used for circulating water |
| CN105565513B (en) * | 2014-10-10 | 2018-07-31 | 中国石油化工股份有限公司 | A kind of composite slow-corrosion scale resistor and its preparation method and application |
| CN105565513A (en) * | 2014-10-10 | 2016-05-11 | 中国石油化工股份有限公司 | Composite corrosion and scale inhibitor and its preparation method and use |
| CN104326577A (en) * | 2014-11-24 | 2015-02-04 | 邢台旭阳煤化工有限公司 | Composite corrosion/scale inhibitor for circulating cooling water treatment |
| CN104326577B (en) * | 2014-11-24 | 2016-05-04 | 邢台旭阳煤化工有限公司 | A kind of composite slow-corrosion scale resistor for circulating cooling water treatment |
| CN105000683A (en) * | 2015-07-10 | 2015-10-28 | 杨红微 | Phosphorus-free, green and environment-friendly slow-release scale inhibitor |
| CN105753075A (en) * | 2015-07-31 | 2016-07-13 | 南通德安化工有限公司 | Novel efficient and environment-friendly water treatment agent |
| CN106477737A (en) * | 2015-08-25 | 2017-03-08 | 南京理工大学 | A kind of continuous cast mold fIthy circulating system highly effective corrosion and scale inhibition disperser |
| CN106745856A (en) * | 2017-03-27 | 2017-05-31 | 刘雄杰 | A kind of without phosphorus slow-release scale inhibitor |
| CN110040857A (en) * | 2019-04-12 | 2019-07-23 | 嘉兴沃特泰科环保科技有限公司 | A kind of phosphorus-free green corrosion inhibiting and descaling agent and preparation method thereof |
| CN109928522A (en) * | 2019-04-17 | 2019-06-25 | 南京广全环保技术服务有限公司 | Compound phosphate-free corrosion inhibition antisludging agent and preparation method thereof |
| CN112645457A (en) * | 2019-10-11 | 2021-04-13 | 西南科技大学 | Environment-friendly corrosion and scale inhibitor for chromium salt wastewater evaporation system |
| CN111115856A (en) * | 2019-12-25 | 2020-05-08 | 河南普绿环保科技有限公司 | Green phosphorus-free scale and corrosion inhibition material for circulating cooling water |
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