CN102531206B - Low-phosphorous corrosion-inhibition antisludging agent used in conditions of water quality with high cycles of concentration - Google Patents
Low-phosphorous corrosion-inhibition antisludging agent used in conditions of water quality with high cycles of concentration Download PDFInfo
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- CN102531206B CN102531206B CN 201210027345 CN201210027345A CN102531206B CN 102531206 B CN102531206 B CN 102531206B CN 201210027345 CN201210027345 CN 201210027345 CN 201210027345 A CN201210027345 A CN 201210027345A CN 102531206 B CN102531206 B CN 102531206B
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Abstract
The invention discloses a low-phosphorous corrosion-inhibition antisludging agent used in conditions of the water quality with high cycles of concentration and a preparing method. The low-phosphorous corrosion-inhibition antisludging agent is characterized by being formed by mixing zinc, 2-phosphonic acid butane-1,2, 4tricarboxylic acid, phosphorus acyl-carboxylic acid, and crylic acid-acrylic ester-sulfonate copolymer. Weight percentage of all the components is: 2-20% of zinc, 5-20% of 2-phosphonic acid butane-1,2, 4tricarboxylic acid, 5-25% of phosphorus acyl-carboxylic acid and 10-30% of crylic acid-acrylic ester-sulfonate copolymer. The low-phosphorous corrosion-inhibition antisludging agent is low-phosphorous, environment-friendly, stable-phosphorous, excellent in stable-zinc performance and strong in thermo-stabilization, cannot generate agentia scales in a circulating water system, and is suitable for an alkaline circulating water system with cycles of concentration higher than 6.0 and the sum of alkalinity and hardness larger than 1200 mg/l.
Description
Technical field
The present invention relates to a kind of corrosion inhibiting and descaling agent, particularly relate to a kind of for corrosion inhibiting and descaling agent under the high concentration multiple water quality environment and preparation method thereof.
Background technology
Energy-saving and emission-reduction are to realize one of Main Means that " low-carbon (LC) " produced, numerous manufacturing enterprises all adopt circulating water system to reach water saving, reduce the purpose of energy consumption, but water coolant is through inorganic metal ion such as calcium in the water after repeatedly recycling, magnesium ions etc. very easily form calcium phosphate, calcium carbonate, the inorganic scales such as magnesiumcarbonate, its cycles of concentration usually surpasses 6, " basicity+hardness " value surpasses 1000mg/l, these dirt depositions not only cause the heat transfer efficiency of equipment sharply to descend after equipment surface, and easily form underdeposit corrosion and cause equipment perforation, greatly shorten service life of equipment, cause when serious producing and normally to move.In order to bring into play the active effect of circulating water system, safeguard the normal operation of production unit, reduce equipment scaling, increase the service life, corrosion inhibiting and descaling agent arises at the historic moment.
People just begin to utilize inorganic inhibitors to stop the formation of dirt in the water and its inhibitor mechanism are studied as far back as the thirties in 20th century, but inorganic inhibitors is relatively low and easily cause secondary pollution to be substituted by organic inhibitor agent gradually to water surrounding because of scale inhibition performance.Organic inhibitor agent mainly comprises phosphonic acid based Scale inhibitors, carboxyl acids antisludging agent, phosphonocarboxylic acid class Scale inhibitors, and study hotspot in recent years---pollution-free green scale inhibitor.
It is generally acknowledged that organic inhibitor agent forms inorganic-organic heterozygosis layer by functional group and inorganic scale effect, thereby make inorganic scale inhibition embryos and the recirculated water isolation that contains mineral ion, stop or delay the further growth of inorganic scale inhibition embryos, reach the purpose of scale inhibition, this just requires organic molecule as Scale inhibitors to have can be soluble in water with functional group and the product after the effect of inorganic scale embryos strong effect, so organic inhibitor agent mainly is the multipolymer that obtains by the unit polymerization with difference in functionality group.
The scale-inhibiting properties of Scale inhibitors directly has influence on the cycles of concentration of recirculated water and the normal operation of production, in different circulating water systems, because production technology is different from technique, to the Scale inhibitors product performance require different.The Scale inhibitors range of product is numerous at present, and performance is various, and applicable scope differs greatly.In the development and use procedure of Scale inhibitors, often having appeared at the water cycles of concentration in the circulating water system increases (greater than 6), and " basicity+hardness " value increases the phenomenon of (1200mg/l).Bounds and the composition of Scale inhibitors product own that these conditions have exceeded existing Scale inhibitors affect the phenomenons such as environmental protection (phosphorous height).Therefore, the environment-friendly type inhibition anti-sludging agent that under current strict environmental protection policy condition, research and production is pollution-free, be applicable to the high concentration multiple condition of water quality has become the direction of industry development.
Summary of the invention
The object of the present invention is to provide a kind of scale inhibition performance high and can not be used for low-phosphorus corrosion and scale inhibitor under the high concentration multiple condition of water quality and preparation method thereof to what water surrounding caused secondary pollution.
In order to achieve the above object; the present invention adopts following technical scheme: a kind of for the low-phosphorus corrosion and scale inhibitor under the high concentration multiple condition of water quality; it is characterized in that: be by zinc; 2-phosphonic acids butane-1; 2; 4 tricarboxylic acid; phosphoryl carboxylic acid; vinylformic acid-acrylate-co-polymer of sulfonate mixes in solvent; the weight percent of described each composition is: zinc 2～20 %; 2-phosphonic acids butane-1; 2; 4 tricarboxylic acid, 5～20 %; phosphoryl carboxylic acid 5～25%; vinylformic acid-acrylate-co-polymer of sulfonate 10～30%; all the other are solvent, and above each component sum is 100%.
The preparation method of described low-phosphorus corrosion and scale inhibitor is: be zinc 2～20 %, 2-phosphonic acids butane-1 with weight percent; 2; 4 tricarboxylic acid, 5～20 %, phosphoryl carboxylic acid 5～25%, vinylformic acid-acrylate-co-polymer of sulfonate 10～30%, all the other are solvent; above each component sum is that 100% raw material adds respectively reactor; through fully stirring; after uniform and stable, namely get the product low-phosphorus corrosion and scale inhibitor.
In the raw material that the present invention adopts, Zn(zinc): chemical property is active, in the air at normal temperatures, generates fine and close zinc subcarbonate film, can stop further oxidation, and zinc and acid or highly basic can both react, and emit oxygen; PBTCA(2-phosphonic acids butane-1,2,4 tricarboxylic acid): phosphorus content is low, because it has the structural performance of phosphoric acid and hydroxy acid, makes it have good scale inhibition performance and corrosion inhibition, the organic phosphoric acid that is better than commonly using, special at high temperature scale-inhibiting properties is much better than organic phosphoric acid commonly used, can improve the solubleness of zinc, the oxidation susceptibility of anti-chlorine is good, and composite synergetic property is good; The POCA(phosphoryl carboxylic acid): POCA introduces phosphonyl group at former hydroxy-acid group, and the calcium carbonate in the recirculated cooling water, calcium phosphate scale are had good dispersing property, and to the good restraining effect that deposits of barium sulfate and Strontium Sulphate and silicon dirt; W118A(vinylformic acid-acrylate-co-polymer of sulfonate): W118A is a kind of novel polynary polyelectrolyte dirt dispersion agent that contains sulfonate.Owing on the molecular chain of multipolymer, containing simultaneously strong acid, weak acid and non-ionic group, it is applicable to use under high temperature, high pH, high hard and the high-alkali condition, deposition to the ferric oxide in the water, calcium phosphate, zinc phosphate and calcium carbonate, have good restraining effect, also have higher calcium tolerance.The present invention utilizes Zn(zinc), PBTCA(2-phosphonic acids butane-1,2,4 tricarboxylic acid), the POCA(phosphoryl carboxylic acid), W118A(vinylformic acid-acrylate-co-polymer of sulfonate) separately characteristic, it is formed new multipolymer produces corrosion inhibiting and descaling agent.
The present invention is that a kind of low-phosphorous, environmental protection, steady phosphorus, iron resistance are excellent, thermally-stabilised strong, can in circulating water system, not produce the corrosion inhibiting and descaling agent of medicament dirt, and be applicable to cycles of concentration more than 6.0, the alkaline circulating water system of " basicity+hardness " sum more than 1200mg/l.
Embodiment
The invention will be further described below in conjunction with embodiment, but scope of the present invention is not limited in the scope of embodiments, and those skilled in the art can improve, and it all within the scope of the present invention.
Embodiment 1:
Zn150kg, PBTCA250kg, POCA350 kilogram, W118A500 kilogram and solvent is an amount of, be respectively charged into feedstock pump, adopt the multi-usage pump to deliver to reactor through transport pipe, mix to evenly after, left standstill 10 minutes, again by pipeline pumping finished product storage tank.Produce 5 stills and amount to 10 tons.
Embodiment 2:
With 600 kilograms of Zn 50 kg, PBTCA100 kg, POCA400 kilogram, W118A, be respectively charged into feedstock pump, adopt the multi-usage pump to deliver to reactor through transport pipe, mix to evenly after, left standstill 10 minutes, again by pipeline pumping finished product storage tank.Produce 5 stills and amount to 10 tons.
Embodiment 3:
With Zn 300 kg, PBTCA 500kg, 100 kilograms of POCA, 200 kilograms of W118A, be respectively charged into feedstock pump, adopt the multi-usage pump to deliver to reactor through transport pipe, mix to evenly after, left standstill 10 minutes, again by pipeline pumping finished product storage tank.Produce 5 stills and amount to 10 tons.
Claims (2)
1. low-phosphorus corrosion and scale inhibitor that is used under the high concentration multiple condition of water quality; it is characterized in that: be by zinc, 2-phosphonic acids butane-1; 2; 4 tricarboxylic acid, phosphoryl carboxylic acid, vinylformic acid-acrylate-co-polymer of sulfonate mix in solvent; the weight percent of described each composition is: zinc 2～20 %, 2-phosphonic acids butane-1; 2; 4 tricarboxylic acid, 5～20 %, phosphoryl carboxylic acid 5～25%, vinylformic acid-acrylate-co-polymer of sulfonate 10～30%, all the other are solvent, and above each component sum is 100%.
2. the preparation method of the described low-phosphorus corrosion and scale inhibitor of claim 1; it is characterized in that: be zinc 2～20 %, 2-phosphonic acids butane-1 with weight percent; 2; 4 tricarboxylic acid, 5～20 %, phosphoryl carboxylic acid 5～25%, vinylformic acid-acrylate-co-polymer of sulfonate 10～30%, all the other are solvent; above each component sum is that 100% raw material adds respectively reactor; through fully stirring, uniform and stable after, namely get the product low-phosphorus corrosion and scale inhibitor.
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| CN 201210027345 CN102531206B (en) | 2012-02-08 | 2012-02-08 | Low-phosphorous corrosion-inhibition antisludging agent used in conditions of water quality with high cycles of concentration |
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| CN 201210027345 CN102531206B (en) | 2012-02-08 | 2012-02-08 | Low-phosphorous corrosion-inhibition antisludging agent used in conditions of water quality with high cycles of concentration |
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| CN102531206B true CN102531206B (en) | 2013-04-24 |
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| CN104556427A (en) * | 2015-01-15 | 2015-04-29 | 鞍钢贝克吉利尼水处理有限公司 | Composite efficient corrosion and scale inhibitor for ammonia still water treatment |
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| US4652377A (en) * | 1985-08-20 | 1987-03-24 | The Bf Goodrich Company | Inhibition of alkaline earth sulfate scales |
| JP4970674B2 (en) * | 2001-09-11 | 2012-07-11 | オルガノ株式会社 | Scale prevention method |
| CN1837101A (en) * | 2005-03-23 | 2006-09-27 | 上海万森水处理有限公司 | High-efficiency phosphino-carboxylic acid dirt dispersion agent |
| CN101746901A (en) * | 2008-12-03 | 2010-06-23 | 成都澳贝龙科技发展有限公司 | Low-phosphorous environment-friendly composite corrosion and scale inhibitor |
| CN101560023B (en) * | 2009-05-26 | 2011-05-18 | 兰州华星高科技开发有限公司 | Efficient low-phosphorus corrosion and scale inhibitor |
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