CN1880245A - Composite water treating agent for central air conditioner freezing water - Google Patents
Composite water treating agent for central air conditioner freezing water Download PDFInfo
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- CN1880245A CN1880245A CN 200510026891 CN200510026891A CN1880245A CN 1880245 A CN1880245 A CN 1880245A CN 200510026891 CN200510026891 CN 200510026891 CN 200510026891 A CN200510026891 A CN 200510026891A CN 1880245 A CN1880245 A CN 1880245A
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- water
- composite water
- disposal agent
- water disposal
- earth element
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Abstract
The invention discloses a treating agent of cooling water and composite water in central air-conditioning, including the weight or portioning components listed as following: one to ten portion of organic phosphinic acid compounds; one to ten portion of molybdate calculated according to molybdic acid ion; 0.1 to ten portion of rare-earth element salts; one to five portion of copper inhibitor; zero to two portion of zinc calculated according to zinc ion. This invention is low-phosphorus and environment-friendly type, good quality in antisludging and corrosion inhibit, easy to obtain material, explore the application area of using rare-earth element in water treatment, and have greatly active meaning in developing rare earth project of our country.
Description
Technical field
The present invention relates to a kind of composite water disposal agent, particularly a kind of central air-conditioning refrigerated water composite water disposal agent.
Background technology
Center air-condition circle water is divided into recirculated cooling water and circulated refrigerated water, circulated refrigerated water soft water commonly used is as recirculated water, calcium, magnesium ion content is very low, the recycle system is a closed circulation system, moisture does not evaporate, do not concentrate, system mainly produces the metallic corrosion phenomenon, and corrosion product increases the thermal resistance of heat-transfer surface and the roughness of metallic surface, thereby has promoted the deposition fouling, in order to prevent the formation of incrustation scale, suppress the microbial growth breeding, operating device and Corrosion of Pipeline improve heat exchanger effectiveness, save energy, be necessary the water quality of central air-conditioning circulated refrigerated water is handled the work-ing life of prolongation equipment, adds certain water conditioner.In present central air-conditioning refrigerated water water conditioner, medicament commonly used has phosphorus system, molybdate and compound drug thereof, and the higher body eutrophication that easily causes of phosphoric acid salt and poly-phosphate phosphorus content promotes algal grown in the water.Single molybdate need be kept 200mg/L as inhibiter, and concentration is higher, and molybdate and phosphoric acid salt are composite to have systemic effect preferably, but molybdate and 2-phosphonic acid butane-1,2,4-tricarboxylic acid (PBTCA), Zn
2+, terpolymer, benzotriazole (BTA) also still need more than the 60mg/L after composite, because the molybdate price is higher, limited widespread use in water treatment [Liu Hong. molybdenum is the corrosion inhibition research of compound prescription. Wuhan Metallurgical Science and Technology Univ.'s journal (natural science edition): 1999,22 (4): 348-350].
Therefore development is efficient, the water treatment agent of environmental protection becomes the focus of present water treatment field, increasing medicament is developed and is applied to the water treatment compounded formula, the research of rare earth element in water treatment, use actually rare at present, someone is with rare earth permanent-magnetic material and environment-friendly type macromolecule polymkeric substance---and poly aspartic acid combines and studies its scale inhibition effect, the result shows, these two kinds of water technologies have good synergy scale effect, can make the scale inhibition effect of poly aspartic acid improve 20%, but the corrosion mitigating effect of this prescription is not discussion [Liu Zhenfa, Wang Yanji, Guo Ruhui, Zhang Lihui, Zhang Yanhe.Rare earth permanent-magnetic material and the scale inhibition research of poly aspartic acid system, water technology, 2005,31 (2): 55-57].The somebody has studied in the hydrochloric acid medium, and rare earth cerium (IV) ion and Sodium orthomolybdate are to the inhibition synergistic effect of cold-rolled steel.Result of study shows that rare earth cerium (IV) ion and Sodium orthomolybdate have produced tangible inhibition synergistic effect to cold-rolled steel, and maximum corrosion inhibition rate can reach about 90% [wooden Guan Nan, Li Xianghong, celebrating in the wrong, Zhou Jun.Rare-earth cerium ion and Sodium orthomolybdate in hydrochloric acid soln to the inhibition synergistic effect of cold-rolled steel, chemical journal, 2004,62 (24): 2386-2390].Above-mentioned two kinds of documents only to the specific compounded formula that contains rare earth element in water treatment scale inhibition or inhibition single aspect effect done preliminary theoretical investigation, other compound prescription that contains rare earth element that the further research of still needing has inhibition and the dual synergistic effect of scale inhibition concurrently is beneficial to use on the actual industry, particularly researches and develops the water conditioner compound prescription at the central air-conditioning refrigerated water.And the main difficult point of the research of circulated refrigerated water water treatment agent is the research and development of prescription, promptly in existing numerous scale inhibition, inhibiter, select the various components of collocation, and each component different concns groped, also consider some such as the problems such as dispersion of water-insoluble medicament at aqueous phase so that prescription can reach decide occasion, the desired water treatment effect of water quality.
Summary of the invention
The technical problem to be solved in the present invention promptly is above-mentioned problem, and a kind of novel composite water disposal agent is provided, particularly a kind of central air-conditioning refrigerated water composite water disposal agent.
Technical scheme of the present invention is: a kind of central air-conditioning refrigerated water composite water disposal agent, and it comprises the component of following parts by weight: 1～10 part organic phospho acid compound; In molybdenum acid ion, 1～10 part molybdate; 0.1 the salt of～10 parts rare earth element; 1～5 part copper inhibitor; In zine ion, 0～2 part zinc salt.
The said central air-conditioning refrigerated water of the present invention is meant its circulated refrigerated water.
In a preferred embodiment of the present invention, this composite water disposal agent comprises the component of following parts by weight: 2～7 parts organic phospho acid compound; In molybdenum acid ion, 2～5 parts molybdate; 0.5 the salt of～1.5 parts rare earth element; 1～2 part copper inhibitor; In zine ion, 1 part zinc salt.
Wherein, the said organic phospho acid compound of the present invention is meant the organic compound that phosphine atom and carbon atom directly link to each other in the phosphate group in the molecule, it is a class cathode type inhibiter, it is again class equivalent Scale inhibitors non-chemically, has tangible molten limit effect, they have excellent sequestering power to many metal ions (as calcium, magnesium, copper, zinc etc.), even the inorganic salts of these metals such as calcium sulfate, lime carbonate, Calucium Silicate powder, Magnesium Silicate q-agent etc. also had deactivation preferably, phosphorus content is low and can play the effect of stablizing zinc salt.Organic phospho acid compound of the present invention is selected from Amino Trimethylene Phosphonic Acid (ATMP), ethylene diamine tetra methylene phosphonic acid (EDTMP), 1-carboxyl ethylidine-1,1-di 2 ethylhexyl phosphonic acid (HEDP), 2-phosphonic acid butane-1,2,4-tricarboxylic acid (PBTCA) and salt thereof, as in sylvite, sodium salt and the ammonium salt etc. one or more, the preferred 2-phosphonic acids of the present invention butane-1,2, the 4-tricarboxylic acid.
Above-mentioned molybdate can be any molybdenum acid ion (MoO that contains
4 2-) compound, it belongs to anodic corrosion inhibitor through test chemical, can generate the solvay-type passive film of iron-ferric oxide-molybdenum oxide on iron anode, thereby have corrosion mitigating effect.Preferred ammonium molybdate of molybdate of the present invention or Sodium orthomolybdate or its hydrate.
Has good synergistic effects when rare earth class material that adds among the present invention and above composite reagent, participate in the film formation reaction of steel surface, can form fine and close rare earth element conversion film at steel surface, prevent its corrosion, and then reduce the concentration that adds of other medicaments, improve the corrosion inhibition of compound greatly, the ECH rare earth element has characteristics such as consumption is few, and suitable water quality is in extensive range simultaneously.The present invention selects the salt of rare earth element for use, and wherein rare earth element is preferably from lanthanon, as cerium, lanthanum and praseodymium etc.; Its salt can be any compound that contains above-mentioned rare earth element ion, preferably its nitrate.
Be meant and form protective membrane on the copper surface as for above-mentioned copper inhibitor, thereby effectively prevent the corrosive material of copper product.It can be any copper inhibitor well known in the prior art, for example benzotriazole (BTA), mercaptobenzothiazole (MBT) or its sodium salt and Methylbenzotriazole nitrogen azole compounds or its mixtures such as (TTA), the preferred benzotriazole of the present invention.
Zinc salt of the present invention is meant any zine ion (Zn that contains
2+) compound, it is a kind of cathode type inhibiter, can be in the metallic surface of water medium film forming fast, the OH that produces with the cathodic area of metallic surface
-Form the zinc hydroxide throw out fast, suppress cathodic reaction; And stable with the composite zinc salt that can make of organic phosphonate, increase and use the pH threshold value.This zinc salt is selected from zinc chloride, zinc sulfate and hydrate thereof, as water or Zinc vitriol etc.
The water conditioner of the invention described above prescription uses when normal processing, and its preparation method is a kind of physical mixed method of routine, during use above-mentioned various umber materials is placed 1000000 parts of water, mixes to get final product.
Central air-conditioning refrigerated water composite water disposal agent of the present invention has the following advantages: 1. the present invention is a non-toxic formulation, and dosage is low, and phosphorus content is low, is environmentally friendly medicament; 2. scale inhibition, corrosion inhibition excellence; 3. improve the stability of zinc salt, obvious with the zinc salt compound synergic; 4. rare earth element adds the film formation reaction that can participate in steel surface, form fine and close rare earth element conversion film, and have an obvious role in synergism, can reduce the usage quantity of medicaments such as molybdate with the organic phospho acid compound is composite, reduce reagent cost, optimize corrosion mitigating effect; 5. the rare earth element of the present invention's use belongs to low toxicity material, to the person poultry harmless, and environmentally safe; has rich in natural resources in China; account for 80% of world's rare earth resources, the range of application of exploitation rare earth element in water treatment has very positive meaning for the rare earth cause that develops China.
Embodiment
For better understanding essence of the present invention, the present invention will be described below in conjunction with embodiment, but the present invention is not limited.
Embodiment 1
The preparation of composite water disposal agent: with 5mg 2-phosphonic acids butane-1,2,4-tricarboxylic acid (PBTCA), 5mg molybdate Na
2MoO
42H
2O is (with MoO
4 2-Meter), 1mg benzotriazole (BTA), 1mg cerous nitrate, 1mg ZnSO
4H
2O is (with Zn
2+The meter) and 1L water place stirred vessel to mix, be normal water treatment agent of the present invention.
Embodiment 2
The preparation of composite water disposal agent: with 7mg 2-phosphonic acids butane-1,2,4-tricarboxylic acid (PBTCA), 2mg Na
2MoO
42H
2O is (with MoO
4 2-Meter), 1mg benzotriazole (BTA), 0.5mg lanthanum nitrate, 1mg ZnSO
4H
2O is (with Zn
2+The meter) and 1L water place stirred vessel to mix, be normal water treatment agent of the present invention.
Embodiment 3
The preparation of composite water disposal agent: with 2mg 2-phosphonic acids butane-1,2,4-tricarboxylic acid (PBTCA), 5mg Na
2MoO
42H
2O is (with MoO
4 2-Meter), 1mg benzotriazole (BTA), 1.5mg praseodymium nitrate, 1mg ZnSO
47H
2O is (with Zn
2+The meter) and 1L water place stirred vessel to mix, be normal water treatment agent of the present invention.
Embodiment 4
The preparation of composite water disposal agent: with 7mg 2-phosphonic acids butane-1,2,4-tricarboxylic acid (PBTCA), 4mg Na
2MoO
42H
2O is (with MoO
4 2-Meter), 1mg Methylbenzotriazole (TTA), the 1mg cerous nitrate, the 1mg zinc chloride is (with Zn
2+The meter) and 1L water place stirred vessel to mix, be normal water treatment agent of the present invention.
Embodiment 5
The preparation of composite water disposal agent: with 5mg 2-phosphonic acids butane-1,2,4-tricarboxylic acid (PBTCA), 5mg Na
2MoO
42H
2O is (with MoO
4 2-Meter), 2mg BTA, 1mg cerous nitrate, 1mgZnSO
4H
2O is (with Zn
2+The meter) and 1L water place stirred vessel to mix, be normal water treatment agent of the present invention.
Embodiment 6
The preparation of composite water disposal agent: with 1mg 2-phosphonic acids butane-1,2,4-tricarboxylic acid (PBTCA), 3mgNa
2MoO
42H
2O is (with MoO
4 2-Meter), 1mg MBT, 10mg lanthanum nitrate and 1L water place stirred vessel to mix, and are normal water treatment agent of the present invention.
Embodiment 7
The preparation of composite water disposal agent: with 10mg 2-phosphonic acids butane-1,2,4-tricarboxylic acid (PBTCA), the 1mg ammonium molybdate is (with MoO
4 2-Meter), 5mg BTA, 0.1mg praseodymium nitrate and 1L water place stirred vessel to mix, and are normal water treatment agent of the present invention.
Comparative examples
Remove cerous nitrate, surplus prescription with embodiment 1.
Each component in the foregoing description all is conventional commercially available prod.And PBTCA wherein can be substituted by above-mentioned other organic phospho acid compound.
For inhibition, the scale inhibition effect of explanation the invention described above embodiment to the central air-conditioning circulated refrigerated water, further specify it with effect embodiment below, wherein, the Shanghai tap water quality of the following experiment simulation of water quality central air-conditioning refrigerated water recycle system.
Effect embodiment 1 A
3Carbon steel contrast corrosion test
Experiment water quality: Ca
2+100mg/L is (with CaCO
3Meter), HCO
3 -60mg/L is (with CaCO
3Meter), pH=7.4.
With reference to standard GB/T 18175-2000, adopt the composite water disposal agent and the experiment water quality of the foregoing description 1～7 and comparative examples to be rotated coupon corrosion test, in thermostat water bath, 40 ℃ ± 1 ℃, 75 rev/mins of rotating speeds move 72 hours and carry out corrosion test.Experimental result sees the following form:
| Embodiment | Contrast | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Corrosion inhibition rate % | 78.13 | 96.78 | 95.23 | 93.19 | 95.39 | 95.58 | 93.27 | 91.38 |
The experiment of effect embodiment 2 static-state scale inhibition
Experiment water quality: Ca
2+100mg/L is (with CaCO
3Meter), Mg
2+40mg/L is (with CaCO
3Meter), HCO
3 -60mg/L is (with CaCO
3Meter), pH=7.3.
With reference to the GB/T16632-1996 standard, adopt the composite water disposal agent of the foregoing description 1,4 prescriptions and comparative examples and experiment water quality to carry out the static-state scale inhibition test, in thermostat water bath, 80 ℃ ± 1 ℃, constant temperature 10 hours.Experimental result sees the following form:
| Embodiment | Contrast | 1 | 4 |
| Scale inhibition performance % | 90.13 | 95.13 | 97.95 |
Effect embodiment 3 red copper corrosion tests
Experiment water quality: Ca
2+100mg/L is (with CaCO
3Meter), HCO
3 -60mg/L is (with CaCO
3Meter), pH=7.4.
With reference to the rotary hanging plate method, standard GB/T 18175-2000 adopts the composite water disposal agent and the water quality of the foregoing description 1,5 prescriptions and comparative examples to be rotated coupon corrosion test, in the temperature controlled water bath pot, 40 ℃ ± 1 ℃, constant temperature 72 hours, 75 rev/mins of rotating speeds.The results are shown in following table:
| Embodiment | Contrast | 1 | 5 |
| Corrosion inhibition rate % | 80.25 | 96.13 | 98.13 |
Claims (10)
1, a kind of central air-conditioning refrigerated water composite water disposal agent, it comprises the component of following parts by weight: 1～10 part organic phospho acid compound; In molybdenum acid ion, 1～10 part molybdate; 0.1 the salt of～10 parts rare earth element; 1～5 part copper inhibitor; In zine ion, 0～2 part zinc salt.
2, composite water disposal agent as claimed in claim 1 is characterized in that the component that it comprises following parts by weight: 2～7 parts organic phospho acid compound; In molybdenum acid ion, 2～5 parts molybdate; 0.5 the salt of～1.5 parts rare earth element; 1～2 part copper inhibitor; In zine ion, 1 part zinc salt.
3, composite water disposal agent as claimed in claim 1 is characterized in that this organic phospho acid compound is a 2-phosphonic acids butane-1,2, the 4-tricarboxylic acid.
4, composite water disposal agent as claimed in claim 1 is characterized in that this molybdate is ammonium molybdate or Sodium orthomolybdate.
5, composite water disposal agent as claimed in claim 1 is characterized in that this rare earth element is selected from lanthanon.
6, composite water disposal agent as claimed in claim 5 is characterized in that this lanthanon is selected from cerium, lanthanum and praseodymium.
7, composite water disposal agent as claimed in claim 1, the salt that it is characterized in that this rare earth element is its nitrate.
8, composite water disposal agent as claimed in claim 1 is characterized in that this copper inhibitor is selected from one or more in benzotriazole, mercaptobenzothiazole and the Methylbenzotriazole.
9, composite water disposal agent as claimed in claim 8 is characterized in that this copper inhibitor is a benzotriazole.
10, composite water disposal agent as claimed in claim 1 is characterized in that this zinc salt is selected from zinc chloride, zinc sulfate and hydrate thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100268919A CN100469714C (en) | 2005-06-17 | 2005-06-17 | Composite water treating agent for central air conditioner freezing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100268919A CN100469714C (en) | 2005-06-17 | 2005-06-17 | Composite water treating agent for central air conditioner freezing water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1880245A true CN1880245A (en) | 2006-12-20 |
| CN100469714C CN100469714C (en) | 2009-03-18 |
Family
ID=37518638
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100268919A Active CN100469714C (en) | 2005-06-17 | 2005-06-17 | Composite water treating agent for central air conditioner freezing water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927658A (en) * | 2012-11-28 | 2013-02-13 | 机械工业第三设计研究院 | Water temperature change control method by humidity control method |
| CN103508570A (en) * | 2012-06-25 | 2014-01-15 | 上海思曼泰化工科技有限公司 | Environmental protection and high efficiency corrosion inhibitor for inhibiting salt water corrosion on carbon steel, preparation method and use method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8324717D0 (en) * | 1983-09-15 | 1983-10-19 | British Petroleum Co Plc | Inhibiting corrosion in aqueous systems |
| US5130052A (en) * | 1991-10-24 | 1992-07-14 | W. R. Grace & Co.-Conn. | Corrosion inhibition with water-soluble rare earth chelates |
| CN1114952A (en) * | 1994-07-13 | 1996-01-17 | 韩允志 | Compound method of multicomponent compound anti-scale corrosion inhibitor |
| US6312604B1 (en) * | 1998-10-23 | 2001-11-06 | Zodiac Pool Care, Inc. | Lanthanide halide water treatment compositions and methods |
-
2005
- 2005-06-17 CN CNB2005100268919A patent/CN100469714C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508570A (en) * | 2012-06-25 | 2014-01-15 | 上海思曼泰化工科技有限公司 | Environmental protection and high efficiency corrosion inhibitor for inhibiting salt water corrosion on carbon steel, preparation method and use method thereof |
| CN102927658A (en) * | 2012-11-28 | 2013-02-13 | 机械工业第三设计研究院 | Water temperature change control method by humidity control method |
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| Publication number | Publication date |
|---|---|
| CN100469714C (en) | 2009-03-18 |
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Address after: 200437, No. 39, building 181, Lane 2, Wen Shui East Road, Shanghai, 28F Co-patentee after: Shanghai Emperor of Cleaning Tech Co., Ltd. Patentee after: Wang Wei Address before: 200437, No. 39, building 181, Lane 2, Wen Shui East Road, Shanghai, 28F Co-patentee before: Shanghai Emperor of Cleaning Hi-Tech Co., Ltd. Patentee before: Wang Wei |
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Owner name: SHANGHAI EMPEROR OF CLEANING TECH. CO., LTD. Free format text: FORMER OWNER: WANG WEI Effective date: 20140120 Free format text: FORMER OWNER: SHANGHAI EMPEROR OF CLEANING TECH. CO., LTD. Effective date: 20140120 |
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Effective date of registration: 20140120 Address after: 200437 5F, B, Bai Shu Building, No. 1230, Bei Bei Road, Hongkou District, Shanghai, Zhongshan Patentee after: Shanghai Emperor of Cleaning Tech Co., Ltd. Address before: 200437, No. 39, building 181, Lane 2, Wen Shui East Road, Shanghai, 28F Patentee before: Wang Wei Patentee before: Shanghai Emperor of Cleaning Tech Co., Ltd. |