CN101838057A - Multifunctional anti-incrustation corrosion inhibitor and preparation method thereof - Google Patents
Multifunctional anti-incrustation corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN101838057A CN101838057A CN200910073943A CN200910073943A CN101838057A CN 101838057 A CN101838057 A CN 101838057A CN 200910073943 A CN200910073943 A CN 200910073943A CN 200910073943 A CN200910073943 A CN 200910073943A CN 101838057 A CN101838057 A CN 101838057A
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Abstract
The invention discloses a multifunctional anti-incrustation corrosion inhibitor and a preparation method thereof. The multifunctional anti-incrustation corrosion inhibitor is used as a water treatment agent for industrial circulating cooling water, a heating network system and a low-pressure boiler and is prepared from the following components in percentage by mass: phosphate, sulfonate, phosphonate, polycarboxylic acid, azoles and water. The preparation method comprises the following steps of: sequentially adding the components into a reaction vessel at normal temperature, and then stirring, dissolving and mixing to form a finished product. The multifunctional anti-incrustation corrosion inhibitor confirms to the national DL/T806-2002 (electric power) and SH 260407-2003 (petrochemistry) standards of the anti-incrustation corrosion inhibitor for circulating cooling water, can be applied to various water treatment systems and used as the water treatment agent for water with various qualities, and can be directly applied to the water treatment system to play the roles of anti-incrustation, incrustation removal, corrosion mitigation and concentration ratio increase, thereby achieving the purposes of incrustation prevention and removal as well as water saving.
Description
Technical field
The present invention relates to a kind of multifunctional anti-incrustation corrosion inhibitor and compound method thereof, be used for the water conditioner of industrial circulating cooling water, heat network system and low pressure boiler.
Background technology
At present; people are to the processing of industrial circulating cooling water system, heat network system and feedwater fouling; all need under the situation of shutting down, stopping production, to carry out; the above two scale removal then need adopt acid to clean, not only influence ordinary production; also can cause the corrosion of equipment itself, then adopt for boiler to add the softening dirt processing of alkali, it not only has certain corrodibility; sometimes also need people's hammer to pound the pricker shovel and removed, waste time and energy.In addition in existing water conditioner, remove different system's foulings and then use different treatment agents, function singleness, as: the descaling function that do not have that scale inhibition function is arranged, the scale inhibition function that do not have that descaling function is arranged, that uses in industrial circulating cooling water can not use in heat supply network or low pressure boiler, that uses in surface water can not be used for underground water, that uses in high-alkali, high hardness can not be used for negative hard water, can not be used for high concentration ratio etc. what low concentration rate used, therefore, existing water conditioner prescription is varied, gives in the use and causes inconvenience.
Summary of the invention
Purpose of the present invention is exactly for solving the problem of above-mentioned proposition, and for people provide a kind of multifunctional anti-incrustation corrosion inhibitor, it can adapt to and effectively to various water quality water treatment scales of multisystem and scale removal.
Another object of the present invention provides the compound method of this anti-incrustation corrosion inhibitor,
Purpose of the present invention is realized by following technical scheme:
This anti-incrustation corrosion inhibitor is formulated by mass percentage by following component,
Phosphoric acid salt 5-15% sulfonate 5-15%
Phosphonate 25-45% poly carboxylic acid 5-25%
Azole 0.5-3.0% water surplus
Described preferred version is formulated by mass percentage by following component,
Phosphoric acid salt 8-13% sulfonate 8-13%
Phosphonate 28-35% poly carboxylic acid 10-20%
Azole 0.8-2.0% water surplus
Described anti-incrustation corrosion inhibitor each component is specifically selected raw material for use:
A, phosphoric acid salt are that tripoly phosphate sodium STPP or tertiary sodium phosphate are wherein a kind of,
B, sulfonate are that thionamic acid or alkylsulphonic acid are wherein a kind of,
C, phosphonate are wherein two kinds of Amino Trimethylene Phosphonic Acid or ethylene diamine tetra methylene phosphonic acid or 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid,
D, poly carboxylic acid are polyacrylic acid or sodium polyacrylate or hydrolytic polymaleic anhydride is wherein a kind of or two kinds,
E, azole are that benzotriazole or methylbenzothiazole or mercaptobenzothiazole are wherein a kind of.
The compound method of above-mentioned anti-incrustation corrosion inhibitor is as follows:
1., in container, add entry earlier,
2., again add phosphoric acid salt, sulfonate solid stirring and dissolving,
3., in lysate, add phosphonate, poly carboxylic acid liquid agitation again and mix,
4., at last add azole, be stirred into finished product.
It is at normal temperatures, and adopting prepares burden in the container to stir forms.
Advantage of the present invention is a kind of composite scale inhibiter of multifunctional and multipurpose, its phosphonate content, active constituent, and indexs such as solid content, density, pH value all meet the composite scale-inhibiting corrosion inhibitor standard of State Grid and petrochemical system formulation.It is adapted to the water conditioner of the multiple water quality requirement of various water treatment systems, can directly add in the water treatment system, have functions such as scale inhibition, scale removal, inhibition, high concentration ratio, realize that people's with medicament has the ideal of dirty scale removal, no dirty antiscale, simultaneously on the incorrosive basis of non-scaling, improve the recirculated water concentration rate, water saving.Produce simple, easy to use, with low cost.
One of anti-incrustation corrosion inhibitor important feature of the present invention is: change the very competent of lime carbonate lattice.Promptly the lime carbonate in the water is under the over-saturation state, by the effect of this medicament, the calcite form of lime carbonate become the aragonite form, and hexahedron is become polyhedron or spheroid, becomes grain slag.Because the adhesive ability of grain slag is very poor, precipitation is removed under the effect of current.
Embodiment
Press the mass percent weighing preparation of each component:
Embodiment 1
In reaction vessel, add water 188L, take by weighing the tripoly phosphate sodium STPP 50kg stirring and dissolving that adds phosphoric acid salt, the thionamic acid 50kg stirring and dissolving that adds Sulfonates again, the Amino Trimethylene Phosphonic Acid and the ethylene diamine tetra methylene phosphonic acid 450kg liquid that in lysate, add phosphonates then again, the polyacrylic acid 250kg liquid agitation of polycarboxylic acid is mixed, and adds the benzotriazole 12kg of azole at last, and preparation is put under the normal temperature condition, constantly stir, get pale brown or orange-yellow transparent liquid finished product.
Meet DL/T806-2002 " fuel-burning power plant recirculated cooling water anti-incrustation corrosion inhibitor " and SH260407-2003 " petrochemical industry " standard after testing, be listed as follows:
The DL/T806-2002 standard
| Test item | The product index category-B | Detected result |
| Azole (C 6H 4The NHN:N meter), % | ??≥1.0(0.5) | ??1.30 |
| Phosphonate is (with PO 4 3-Meter), % | ??≥6.8 | ??21.86 |
| Phosphorous acid is (with PO 3 3-Meter), % | ??≤2.25 | ??0.03 |
| Positive phosphorus is (with PO 4 3-Meter) % | ??≤0.75 | ??0.02 |
| Solids content, % | 〉=32 (excellent 28 qualified 25) | ??37.29 |
| PH (1% aqueous solution) | ??3.0±1.5 | ??2.01 |
| Density (20 ℃), g/cm 3 | ??≥1.15 | ??1.18 |
Annotate: SH260407-2003 " petrochemical industry " product index in bracket the difference, other all with.
Embodiment 2
In reaction vessel, add water 290L, take by weighing the tertiary sodium phosphate 100kg stirring and dissolving that adds phosphoric acid salt, get the alkylsulphonic acid 100kg stirring and dissolving of Sulfonates again, the ethylene diamine tetra methylene phosphonic acid and the 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 350kg liquid that in lysate, add phosphonates then again, the sodium polyacrylate of polycarboxylic acid and hydrolytic polymaleic anhydride 150kg liquid agitation are mixed, the methylbenzothiazole 10kg that adds azole at last, preparation is put under the normal temperature condition, constantly stir, get pale brown or orange-yellow transparent liquid finished product.
Embodiment 3
In reaction vessel, add water 392L, take by weighing the tripoly phosphate sodium STPP 150kg stirring and dissolving that adds phosphoric acid salt, the alkylsulphonic acid 150kg stirring and dissolving that adds the sulphur salt again, the Amino Trimethylene Phosphonic Acid and the 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 250kg liquid that in lysate, add phosphonates then again, the hydrolytic polymaleic anhydride 50kg liquid agitation of polycarboxylic acid is mixed, and adds the mercaptobenzothiazole 8kg of azole at last, and preparation is put under the normal temperature condition, constantly stir, get pale brown or orange-yellow transparent liquid finished product.
Embodiment 2,3 finished products all meet embodiment 1 after testing and show product index standard (concrete data slightly)
Product beta test industrial production system of the present invention, obtain the effect of fine scale inhibition, scale removal:
For example: colliery, Shanxi power plant: 2 * 50mw generating set, circulating water system are that mine is purified waste water, basicity 8.5mmol/L, hardness 7.0mmol/L, CI
-25mg/L moves when the long-term 3.0 multiplying power left and right sides, does not add sour uncomfortable pH value, also can satisfy needs when producing, and this is the level that other any water treatment agents can not get.
Again for example: the recirculating cooling water system of Hebei steel grating factory, make up water are basicity 4.0mmol/L, hardness 7.0mmol/L, CI
-16mg/L, not blowdown of moisturizing dosing every day, the recirculated water concentration rate is up to more than 15 times, and still non-scaling does not corrode, and clears up a circulating water pool basically in 1 year, and under the pond is grain slag and mud.
Again for example: six tons of steam boilers in chemical plant, Henan are to use under the situation of 1.0mmoI/L at softened water hardness, have not only removed old dirt, and have kept always and do not tie new dirt.
Claims (5)
1. multifunctional anti-incrustation corrosion inhibitor, it is characterized in that by following component formulated by mass percentage,
Phosphoric acid salt 5-15% sulfonate 5-15%
Phosphonate 25-45% poly carboxylic acid 5-25%
Azole 0.5-3.0% water surplus.
2. multifunctional anti-incrustation corrosion inhibitor according to claim 1 is characterized in that preferred version is formulated by mass percentage by following component,
Phosphoric acid salt 8-13% sulfonate 8-13%
Phosphonate 28-35% poly carboxylic acid 10-20%
Azole 0.8-2.0% water surplus.
3. multifunctional anti-incrustation corrosion inhibitor according to claim 1 and 2 is characterized in that each component specifically selects raw material for use:
A, phosphoric acid salt are that tripoly phosphate sodium STPP or tertiary sodium phosphate are wherein a kind of,
B, sulfonate are that thionamic acid or alkylsulphonic acid are wherein a kind of,
C, phosphonate are wherein two kinds of Amino Trimethylene Phosphonic Acid or ethylene diamine tetra methylene phosphonic acid or 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid,
D, poly carboxylic acid are polyacrylic acid or sodium polyacrylate or hydrolytic polymaleic anhydride is wherein a kind of or two kinds,
E, azole are that benzotriazole or methylbenzothiazole or mercaptobenzothiazole are wherein a kind of.
4. according to the compound method of claim 1 or 2 described multifunctional anti-incrustation corrosion inhibitors, it is characterized in that preparation steps is as follows:
1., in container, add entry earlier,
2., again add phosphoric acid salt, sulfonate solid stirring and dissolving,
3., in lysate, add phosphonate, poly carboxylic acid liquid agitation again and mix,
4., at last add azole, be stirred into finished product.
5. the compound method of multifunctional anti-incrustation corrosion inhibitor according to claim 4 is characterized in that at normal temperatures, and batching stirs and forms in the container.
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| CN103224297A (en) * | 2013-04-28 | 2013-07-31 | 山东玉鑫环保科技有限公司 | Titanium dioxide production wastewater reuse process |
| CN104276677A (en) * | 2014-10-22 | 2015-01-14 | 山东华亚环保科技有限公司 | Composite corrosion inhibitor for boiler water |
| CN104386838A (en) * | 2014-11-13 | 2015-03-04 | 无锡伊佩克科技有限公司 | Water treatment agent |
| CN104402128A (en) * | 2014-12-10 | 2015-03-11 | 苏州路路顺机电设备有限公司 | Waste water treatment agent |
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| CN103183417A (en) * | 2011-12-30 | 2013-07-03 | 王炜 | Medicament for treating composite water in hot water boiler as well as preparation method and use method thereof |
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| CN103224297A (en) * | 2013-04-28 | 2013-07-31 | 山东玉鑫环保科技有限公司 | Titanium dioxide production wastewater reuse process |
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