CN102732892A - Metal corrosion inhibitor composition, metal corrosion inhibitor thereof and application thereof - Google Patents
Metal corrosion inhibitor composition, metal corrosion inhibitor thereof and application thereof Download PDFInfo
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- CN102732892A CN102732892A CN2011100898834A CN201110089883A CN102732892A CN 102732892 A CN102732892 A CN 102732892A CN 2011100898834 A CN2011100898834 A CN 2011100898834A CN 201110089883 A CN201110089883 A CN 201110089883A CN 102732892 A CN102732892 A CN 102732892A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
Abstract
The invention provides a metal corrosion inhibitor composition, a metal corrosion inhibitor thereof and an application thereof. The metal corrosion inhibitor composition contains a water-soluble inorganic zinc salt, an organic phosphine compound, an inorganic phosphorus compound, polyepoxysuccinic acid, a polyacrylamide polymer, and a gluconate, wherein the weight ratio is 0.5-5:0.1-5:0.1-2.5:0.5-8:3-20:1. The metal corrosion inhibitor of the invention has the advantages of good water solubility, and easy complex use with other water processing agents, can satisfy anticorrosion requirements of various metal devices (such as copper devices), and also can satisfy requirements of carbon steel devices of a system, so the metal corrosion inhibitor has very high industrial application values.
Description
Technical field
The present invention relates to a kind of metal inhibitor compsn and the metal inhibitor that uses metal inhibitor compsn of the present invention and as the application of copper inhibitor.
Background technology
Water coolant is the indispensable general facilities of industrial enterprise, is the water rich and influential family.With recycling after the treatment of cooling water, can satisfy technological process to the water treatment effect of requirement on the one hand, guarantee that the production equipment LP normally moves; Can practice thrift service water on the other hand more than 98%, reduce the blowdown of bigger quantity, to protection water resources, protection water surrounding, reducing production costs has huge benefit.
Copper has excellent characteristics such as intensity, machining property, thermal conductivity, electroconductibility, weldability and erosion resistance, is widely used in industrial heat circulating system.Along with development of electric power industry, the applied more and more of copper alloy in double water innercooling electric generator cooling water system and recirculating cooling water system.At petroleum chemical industry, the part recirculating cooling water system contains the copper alloy heat-exchange equipment.In various corrosive mediums, the corrosion of using copper inhibitor to suppress copper and copper alloy is highly effective method.In recent years, obtaining some progress aspect conducting copper and the copper alloy Research on Corrosion Inhibitor both at home and abroad.The nineties in 20th century, previously used copper inhibitor mainly was the heterogeneous ring compounds such as verivate and thiazole of organic cpds (like thiocarbamide, aldehyde, amine, benzoic acid, aniline etc.), like benzotriazole (BTA) and verivate thereof relatively more commonly used now.Recent years, abroad to the research emphasis of copper inhibitor still on organic synthetic and inhibiter composite, composite like the verivate of imidazoles, thiazole, carbazole, aniline, thiocarbamide and tritane and these inhibiter.
Yet; The most copper inhibiter that uses now is more or less all toxic; Like the verivate of above-mentioned BTA, imidazoles, thiazole, carbazole, aniline, thiocarbamide and tritane commonly used etc., because the toxicity of these inhibiter is given and brought numerous inconvenience in the application process; Simultaneously; The conventional copper inhibitor that uses is water-soluble relatively poor now, and very difficult and other anti-incrustation corrosion inhibitors carry out composite, and water cooling equipment material majority is a carbon steel in the circulating water system; The equipment component material is a copper; Therefore except that using conventional corrosion-and scaling-inhibiting water treating agent, also to add copper inhibitor and make the copper protect it from corrosion with the assurance carbon steel protect it from corrosion, and because the defective of the conventional copper inhibitor poorly water-soluble that uses; Make and have to add separately copper inhibitor in the commercial run, thereby bring a lot of troubles to execute-in-place; The cost of the simultaneously above-mentioned conventional copper inhibitor that uses all is higher than water treatment agent commonly used, and this has further strengthened cost of water treatment.
Therefore, develop that a kind of novel toxicity is little, cost is low, the copper inhibitor of good water solubility will be the emphasis direction of in the future researching and developing.
Summary of the invention
The object of the invention is exactly in order to overcome the above-mentioned shortcoming of existing copper inhibiter, a kind of metal inhibitor compsn and new type of metal inhibiter and application thereof to be provided.
The invention provides a kind of metal inhibitor compsn; Wherein, Said metal inhibitor compsn contains the water-soluble inorganic zinc salt; Organic phosphine compound; Inorganic phosphorous compound; Poly-epoxy succinic acid; SEPIGEL 305 based polymer and gluconate; Said SEPIGEL 305 based polymer contains suc as formula the structural unit shown in (I); Said water-soluble inorganic zinc salt; Organic phosphine compound; Inorganic phosphorous compound; Poly-epoxy succinic acid; The weight ratio of SEPIGEL 305 based polymer and gluconate is 0.5-5: 0.1-5: 0.1-2.5: 0.5-8: 3-20: 1
The invention provides a kind of metal inhibitor, wherein, said metal inhibitor contains metal inhibitor compsn and acidic aqueous solution, and wherein, said metal inhibitor compsn is a metal inhibitor compsn of the present invention.
The present invention also provides the application of metal inhibitor of the present invention as copper inhibitor.
Among the present invention; The above-mentioned various raw materials of said metal inhibitor compsn are conventional water treatment agent; And generally speaking, conventional water treatment agent can't be used as the copper metal inhibitor and use, and contriver of the present invention is in research process; The unexpected discovery composite use of water treatment agent that some is conventional can reach the requirement as the copper metal inhibitor.
Water conditioner (like water-soluble inorganic zinc salt, organic phosphine compound, inorganic phosphorous compound, poly-epoxy succinic acid, SEPIGEL 305 based polymer, gluconate) the composite use of novel metal inhibiter of the present invention through routine is used; Make metal inhibitor of the present invention have good water solubility, be prone to and advantage such as the composite use of other water conditioners, toxicity is big, cost is high, the defective of poorly water-soluble to have overcome the copper inhibitor (like the verivate of imidazoles, thiazole, carbazole, aniline, thiocarbamide and tritane and these inhibiter thereof composite) of the routine use of prior art.Metal inhibitor of the present invention both can satisfy the protection against corrosion requirement that contains various hardwares (like cupric equipment), can also satisfy the requirement of the carbon steel equipment of system.Contriver of the present invention infers through composite; Metal inhibitor of the present invention is deposition membranous type inhibiter, its through with recirculated water in calcium ion form the complexing deposited film in the metallic surface, suppress the diffusion of dissolved oxygen; Thereby slow down corrosion of metal, played the effect of inhibition.
Metal inhibitor raw material of the present invention is cheap and easy to get, thereby makes that metal inhibitor composition production cost of the present invention is low, and high using value is arranged in industry.
Embodiment
Metal inhibitor compsn of the present invention contains the water-soluble inorganic zinc salt; Organic phosphine compound; Inorganic phosphorous compound; Poly-epoxy succinic acid; SEPIGEL 305 based polymer and gluconate; Said SEPIGEL 305 based polymer contains suc as formula the structural unit shown in (I); Said water-soluble inorganic zinc salt; Organic phosphine compound; Inorganic phosphorous compound; Poly-epoxy succinic acid; The weight ratio of SEPIGEL 305 based polymer and gluconate is 0.5-5: 0.1-5: 0.1-2.5: 0.5-8: 3-20: 1
Under the preferable case, the weight ratio of said water-soluble inorganic zinc salt, organic phosphine compound, inorganic phosphorous compound, poly-epoxy succinic acid, SEPIGEL 305 based polymer and gluconate is 0.8-4: 0.5-2.5: 0.3-1.5: 1-5: 5-12: 1.
The zinc salt of water-soluble inorganic described in the present invention can be the conventional various water-soluble inorganic zinc salts that use in the water conditioner field, especially is preferably to be selected from zinc sulfate, zinc chloride, the zinc nitrate one or more, is preferably zinc sulfate and/or zinc chloride especially.Among the present invention, said water-soluble inorganic zinc salt is meant that generally solubleness in water (20 ℃, under 1 normal atmosphere) is the inorganic zinc salt greater than 1 weight %.
According to the present invention, said organic phosphine compound can be the conventional various organic phosphine compounds that use in water conditioner field, and under the preferable case, said organic phosphine compound contains at least a functional group that is selected from amino, hydroxyl and the carboxyl.The organic phosphine compound that satisfies aforementioned requirement can be organic phospho acid and salt thereof.Further under the preferable case; Said organic phosphine compound is for being selected from HEDP, ATMP, ethylene diamine tetra methylene phosphonic acid, diethylenetriamine pentamethylene phosphonic acids, 2-phosphonic acids butane-1; 2; In 4-tricarboxylic acid, PAPE, 2-hydroxyl phosphino-acetate, polyamino polyether base methylenephosphonic acid, two hexamethylene triamine five methylenephosphonic acids and hexanediamine tetramethyl fork phosphonic acids and potassium thereof, the sodium salt one or more.Said potassium, sodium salt are preferably ATMP four sodium, ATMP five sodium, ATMP potassium, HEDP sodium, HEDP disodium, HEDP four sodium, HEDP potassium, ethylene diamine tetra methylene phosphonic acid five sodium, diethylene triamine pentamethylene phosphonic five sodium, diethylene triamine pentamethylene phosphonic seven sodium, diethylenetriamine pentamethyl-Alendronate, 2-phosphonic acids butane-1; 2; In 4-tricarboxylic acid four sodium, hexanediamine tetramethyl fork phosphonic acids sylvite, the two hexamethylene triamine five methylenephosphonic acid sodium one or more.
According to the present invention; Said inorganic phosphorous compound can be the conventional inorganic phosphorous compound that uses in water conditioner field; The inorganic phosphorous compound that satisfies aforementioned requirement can be phosphoric acid and salt thereof; Said phosphoric acid salt is preferably one or more in sylvite, sodium salt, ammonium salt and the aluminium salt that is selected from phosphoric acid, and said phosphoric acid salt is preferably and is selected from primary ammonium phosphate, Secondary ammonium phosphate, SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate, dibasic, potassium primary phosphate, potassium hydrogenphosphate, aluminium dihydrogen phosphate, tripoly phosphate sodium STPP and the Sodium hexametaphosphate 99 one or more.
According to the present invention, said SEPIGEL 305 based polymer can be the conventional various SEPIGEL 305 based polymers that use in the water conditioner field, and under the preferable case, said SEPIGEL 305 based polymer also contains suc as formula the structural unit shown in (II),
Further under the preferable case, the weight-average molecular weight of said SEPIGEL 305 based polymer is 1000-10000, and the weight ratio of the structural unit shown in structural unit shown in the said formula (II) and the formula (I) is 5-9: 1-5.Above-mentioned SEPIGEL 305 based polymer can be vinylformic acid-2-acrylic amide-2-methyl propane sulfonic acid multipolymer (being called for short the AA/AMPS multipolymer); It can be commercially available, and can be the SEPIGEL 305 based polymer of JH-907 (B), H-28 (can available from East China, Wujin, Changzhou chemical industry ltd), ZF329LH, ZF322 (A) MS (can available from the strong Yilong Industry Co., Ltd. in Luoyang), HD6303 (can available from converging moral Petrotechnik Ltd.) for trade names for example.
Among the present invention, said SEPIGEL 305 based polymer can be homopolymer and/or multipolymer, and said multipolymer can be in segmented copolymer, random copolymers and the alternating copolymer one or more, and the present invention does not have particular requirement to this.
According to the present invention, said poly-epoxy succinic acid can be the conventional various poly-epoxy succinic acids that use in water conditioner field, for example can be selected from the compound shown in the formula (III) one or more,
HO (C
4H
2O
5M
2)
nH formula (III)
In the formula (III), M is H, Na or K, and n is the integer of 2-50, is preferably the integer that n is 2-30.
According to the present invention; Said gluconate can be the conventional various gluconates that use in the water conditioner field; Wherein, be preferably and be selected from Sunmorl N 60S, Potassium Gluconate, Zinc Gluconate, copper gluconate, calglucon, Menesia, the Ferrous Gluconate one or more.
Composite corrosion inhibitor of the present invention can obtain through existing the whole bag of tricks, for example can the raw material of aforementioned metal composite corrosion inhibitor be got final product according to aforementioned required ratio mixing, and the present invention does not have particular requirement to said blended condition, repeats no more at this.
Metal inhibitor of the present invention contains metal inhibitor compsn and acidic aqueous solution, and wherein, said metal inhibitor compsn is a metal inhibitor compsn of the present invention.
According to the present invention, under the preferable case, in said metal inhibitor gross weight, the content of metal inhibitor compsn is 50-75%, and the content of acidic aqueous solution is 25-50%.Further preferred, the content of metal inhibitor compsn is 60-70%, and the content of acidic aqueous solution is 30-40%.
Among the present invention; The effect that adds acidic aqueous solution is for guaranteeing that the composite back of composite corrosion inhibitor is not having throw out to generate in certain period of storage, thereby guarantees that the medicament after composite does not generate deposition in storage period, to guarantee the effect of inhibiter; To achieve these goals; As long as metal inhibitor contains said acidic aqueous solution, but better for the result of use after composite, the concentration of said acidic aqueous solution is preferably 15-36 weight %.
According to the present invention; Said acidic aqueous solution can be strong acid aqueous solution, weakly acidic aqueous solution, strong acid weak base salt brine solution etc.; Wherein be preferably strong acid aqueous solution and/or weakly acidic aqueous solution; More preferably be selected from hydrochloric acid, aqueous sulfuric acid, aqueous nitric acid, the aqueous acetic acid one or more, be preferably aqueous nitric acid especially.
Metal inhibitor of the present invention can obtain through existing the whole bag of tricks, as long as the raw material of metal inhibitor compsn of the present invention is mixed with acidic aqueous solution, wherein can select to mix by following two kinds of method of mixing:
First method: obtain the metal inhibitor compsn after the various raw materials of metal inhibitor compsn of the present invention are pre-mixed; Again the metal inhibitor compsn is mixed with acidic aqueous solution; The condition that wherein the various raw materials of metal inhibitor compsn is pre-mixed does not have particular requirement; (10-40 ℃) mixing at normal temperatures gets final product, and when the various raw materials of said metal inhibitor are solid, can various raw materials be carried out ground and mixed, mixes to get final product; Wherein, metal inhibitor compsn and acidic aqueous solution blended condition are generally under the condition of normal temperature (temperature is 10-40 ℃), mix can obtain metal inhibitor in 2-3 hour.
Second method: the various raw materials of metal inhibitor compsn are joined in the acidic aqueous solution one by one mix; The order that wherein adds is any; Plurality of raw materials can be once added and also a kind of raw material can be once added, wherein, if when raw material is solid; Preferably before adding, be ground into and Powderedly join in the acidic aqueous solution again; The blended condition is generally under the condition of normal temperature (temperature is 10-40 ℃), mixes can obtain metal inhibitor in 2-3 hour.
Wherein, the corrosion mitigating effect indifference of the metal inhibitor compsn of two kinds of method acquisitions, but operation is for ease preferably adopted first method to mix and is obtained metal inhibitor compsn of the present invention.
The present invention also provides the application of metal inhibitor of the present invention as copper inhibitor.Wherein, In the application process of metal inhibitor of the present invention as copper inhibitor; The concentration of said metal inhibitor in water can be 50-150mg/L; Be preferably 80-120mg/L, among the present invention, the concentration of said metal inhibitor in water is the concentration that comprises acidic aqueous solution and metal inhibitor compsn.
With specific examples metal inhibitor of the present invention is described below and to the corrosion mitigating effect of metallic copper.
The various raw materials that use among the embodiment are conventional material, all can be through being purchased acquisition.
In the embodiment of the invention, the inhibition efficiency that is defined as inhibiter of corrosion inhibition rate,
Calculation formula is I (%)=100 (R
0-R
1)/R
0
In the formula, I is a corrosion inhibition rate;
R
0For not adding the corrosion speed of inhibiter test specimen, mm/a;
R
1Be the corrosion speed of test specimen behind the interpolation inhibiter, mm/a.
Rate of metal corrosion: the numerical value of metallic corrosion effect in the unit time.Like metallic corrosion loss amount on the unit surface in the unit time, mm/a.
Corrosion speed
In the formula:
C: computational constant, see table 1;
Δ W: the corrosion weight loss (g) of test specimen before and after the test;
A: the corroded area (cm of test specimen
2);
T: the time of corrosion test (h);
ρ: the density (kg/m of material for test
3).
Table 1
| The representation unit of F and code name | The constant C value |
| Milligram/decimetre 2My god (mdd) | 2.4×10 6×ρ |
| Milligram/year (mm/a) | 8.76×10 7 |
| Mils per year (mpy) | 3.45×10 9 |
Embodiment 1-5
Present embodiment 1-5 is for metal inhibitor its preparation method of the present invention is described.
Mix according to first method of the present invention and to obtain metal inhibitor compsn of the present invention; Wherein the kind of the various raw materials of the metal inhibitor compsn of embodiment 1-5 and acidic aqueous solution and metal inhibitor compsn and acidic aqueous solution blended condition are seen table 2; Polyepoxy sodium succinate is available from Beijing woods China water quality stabilizer factory, and trade names are RP-112 (PESA poly-epoxy succinic acid).
Table 2
EXPERIMENTAL EXAMPLE 1-5
The metal inhibitor that embodiments of the invention 1-5 is obtained experimentizes chamber corrosion inhibition test (according to GB/T 18175-2000 " the mensuration rotary hanging plate method of water conditioner corrosion inhibition "; With blank with contain benzotriazole (BTA) recombiner (trade names: JH-D-01) as controlled trial; The mass concentration of metal inhibitor in test water is 100 ± 10mg/L; Test water is on-the-spot recirculated water Simulated Water, and the test water quality data is seen table 3, and concrete test-results is seen table 4.
Table 3
| Project | Data |
| Calcium is hard (with CaCO 3Meter)/(mg/L) | 560.92 |
| Basicity is (with CaCO 3Meter)/(mg/L) | 183.73 |
| ρ(Cl -)/(mg/L) | 715.46 |
| ρ(SO 4 2-)/(mg/L) | 960.37 |
Table 4
| Project | Brass test piece erosion rate/(mm/a) | Corrosion inhibition rate (%) |
| Blank | 0.0156 | 0 |
| JH-D-01 | 0.0024 | 84.62 |
| EXPERIMENTAL EXAMPLE 1 | 0.0020 | 87.18 |
| EXPERIMENTAL EXAMPLE 2 | 0.0021 | 86.53 |
| EXPERIMENTAL EXAMPLE 3 | 0.0022 | 85.89 |
| EXPERIMENTAL EXAMPLE 4 | 0.0023 | 85.25 |
| EXPERIMENTAL EXAMPLE 5 | 0.0023 | 85.25 |
Test-results from table 4 is found out; At the scene under the condition of water quality of recirculated water Simulated Water; The corrosion mitigating effect of metal inhibitor of the present invention is superior to containing the corrosion mitigating effect of copper inhibitor BTA recombiner JH-D-01; Brass corrosion speed is 0.0020mm/a-0.0023mm/a, is lower than the brass corrosion speed of the recombiner JH-D-01 that contains copper inhibitor BTA.
EXPERIMENTAL EXAMPLE 6-10
The metal inhibitor that embodiments of the invention 1-5 is obtained experimentizes the chamber dynamic analog test (according to chemical industry standard HG/T 2160-1991 " water coolant dynamic analog test method " and HG/T20690-2000 " chemical enterprise Design of Circulation Cooling Water Treatment technical stipulation "; With the recombiner (trade names: that contain benzotriazole (BTA) JH-D-01) as controlled trial; As the dynamic analog test make up water, the test initial stage adds the basicity that the sodium hydrogencarbonate of certain mass is regulated recirculated water in system, in lime carbonate with the mixing water of on-the-spot softening water and industrial fresh water; Be 100mg/L; The mass concentration of metal inhibitor in water is 100 ± 10mg/L, when concentrating when beginning to heat up, and the basicity of Control Circulation water no longer; The not preparatory film of test tube moves 15 days continuously.Table 5 is a dynamic analog test control condition, and test-results such as table 6, table 7 are water quality situation of recirculated water in the dynamic analog test process.
Table 5
| Project | Data |
| The medicament total phosphorus is (with PO 4 3-Meter)/(mg/L) | 4.21-5.16 |
| Cycles of concentration is (with K +Be benchmark)/doubly | 5.8-6.2 |
| Flow velocity/(m/s) | 0.8 |
| Temperature in/℃ | 32 |
| Temperature out/℃ | 40-42 |
Table 6
| Project | Brass test tube erosion rate/(mm/a) | Brass test tube adhesion speed/(mcm) |
| JH-D-01 | 0.0028 | 4.26 |
| EXPERIMENTAL EXAMPLE 6 | 0.0024 | 5.05 |
| EXPERIMENTAL EXAMPLE 7 | 0.0025 | 5.25 |
| EXPERIMENTAL EXAMPLE 8 | 0.0026 | 5.26 |
| EXPERIMENTAL EXAMPLE 9 | 0.0027 | 4.85 |
| EXPERIMENTAL EXAMPLE 10 | 0.0027 | 4.66 |
Test-results from table 6 is found out; At the scene under the mixing condition of water quality of softening water and industrial fresh water; The corrosion mitigating effect of metal inhibitor of the present invention is superior to containing the corrosion mitigating effect of the recombiner JH-D-01 of copper inhibitor BTA; Brass corrosion speed is 0.0024mm/a-0.0027mm/a, is lower than the erosion rate of the recombiner JH-D-01 that contains copper inhibitor BTA.
Table 7
| Project | Peak | Minimum value | MV |
| Cycles of concentration/doubly | 6.8 | 5.4 | 6.1 |
| Calcium is hard (with CaCO 3Meter)/(mg/L) | 496 | 400 | 440 |
| Total hard (with CaCO 3Meter)/(mg/L) | 1290 | 1050 | 1166 |
| Total alkali is (with CaCO 3Meter)/(mg/L) | 243.6 | 184.7 | 210.5 |
| Total phosphorus is (with PO 4 3-Meter)/(mg/L) | 6.07 | 4.39 | 4.74 |
| Positive phosphorus is (with PO 4 3-Meter)/(mg/L) | 2.96 | 1.25 | 2.16 |
| Total iron/(mg/L) | 2.17 | 1.01 | 1.47 |
| Zine ion/(mg/L) | 4.16 | 3.12 | 3.80 |
| Cl ions/(mg/L) | 779.3 | 732.0 | 755.2 |
| Sulfate ion/(mg/L) | 1120 | 933 | 1026 |
| pH | 8.99 | 8.88 | 8.93 |
| Specific conductivity/(μ S/cm) | 5310 | 4360 | 4748 |
Embodiment 11
The metal inhibitor that obtains among the embodiment 1 is carried out on-the-spot industrial performance test, and the duration of test circulating water quality is seen table 8, and concrete TP is following: adopt the corrosion coupon method; Water cooling tower backwater side line is installed the lacing film device, and the lacing film material is a brass, and the backwater water temperature is 42 ℃; Circulating water flow through the lacing film device is 2000L/h; Test period is 30d, and the concentration of metal inhibitor in water is 100 ± 10mg/L, and recording brass test piece erosion rate is 0.0004mm/a; Satisfy the standard of country less than 0.005mm/a, metal composite inhibiter promptly of the present invention has good corrosion mitigating effect to copper.
Table 8
| Analysis project | Peak | Minimum value | MV |
| pH | 8.56 | 8.26 | 8.40 |
| Calcium is hard (with CaCO 3Meter)/(mg/L) | 645 | 440 | 550.1 |
| Total alkali is (with CaCO 3Meter)/(mg/L) | 288 | 117 | 171.1 |
| Total phosphorus is (with PO 4 3-Meter)/(mg/L) | 6.3 | 4.2 | 5.19 |
| Total iron/(mg/L) | 0.5 | 0.1 | 0.2 |
| Cl -/(mg/L) | 864 | 512 | 734.6 |
| SO 4 2-/(mg/L) | 1200 | 682 | 974.7 |
| Specific conductivity/(μ S/cm) | 4344 | 2337 | 3124 |
| Cycles of concentration/doubly | 6.4 | 3.8 | 5.3 |
| Turbidity/(NTU) | 12.3 | 2.6 | 6.6 |
| Foundry loam amount/(mL/m 3) | 1.3 | 0.3 | 0.9 |
| COD Mn/(mg/L) | 16.2 | 11.4 | 13.8 |
| Total plate count/(individual/mL) | 3.4×10 4 | 3.6×10 3 | 1.4×10 4 |
Claims (18)
1. metal inhibitor compsn; It is characterized in that; Said metal inhibitor compsn contains the water-soluble inorganic zinc salt; Organic phosphine compound; Inorganic phosphorous compound; Poly-epoxy succinic acid; SEPIGEL 305 based polymer and gluconate; Said SEPIGEL 305 based polymer contains suc as formula the structural unit shown in (I); Said water-soluble inorganic zinc salt; Organic phosphine compound; Inorganic phosphorous compound; Poly-epoxy succinic acid; The weight ratio of SEPIGEL 305 based polymer and gluconate is 0.5-5: 0.1-5: 0.1-2.5: 0.5-8: 3-20: 1
2. metal inhibitor compsn according to claim 1; Wherein, the weight ratio of said water-soluble inorganic zinc salt, organic phosphine compound, inorganic phosphorous compound, poly-epoxy succinic acid, SEPIGEL 305 based polymer and gluconate is 0.8-4: 0.5-2.5: 0.3-1.5: 1-5: 5-12: 1.
3. metal inhibitor compsn according to claim 1 and 2, wherein, said water-soluble inorganic zinc salt is to be selected from zinc sulfate, zinc chloride and the zinc nitrate one or more.
4. metal inhibitor compsn according to claim 1 and 2, wherein, said organic phosphine compound contains at least a functional group that is selected from amino, hydroxyl and the carboxyl.
5. metal inhibitor compsn according to claim 4; Wherein, Said organic phosphine compound is for being selected from HEDP, ATMP, ethylene diamine tetra methylene phosphonic acid, diethylenetriamine pentamethylene phosphonic acids, 2-phosphonic acids butane-1; 2; In 4-tricarboxylic acid, PAPE, 2-hydroxyl phosphino-acetate, polyamino polyether base methylenephosphonic acid, two hexamethylene triamine five methylenephosphonic acids and hexanediamine tetramethyl fork phosphonic acids and sylvite, sodium salt, ammonium salt and the aluminium salt one or more.
6. metal inhibitor compsn according to claim 1 and 2, wherein, said inorganic phosphorous compound is to be selected from phosphoric acid and sylvite, sodium salt, ammonium salt and the aluminium salt one or more.
7. metal inhibitor compsn according to claim 6; Wherein, said inorganic phosphorous compound is to be selected from phosphoric acid, primary ammonium phosphate, Secondary ammonium phosphate, SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate, dibasic, potassium primary phosphate, potassium hydrogenphosphate, aluminium dihydrogen phosphate, tripoly phosphate sodium STPP and the Sodium hexametaphosphate 99 one or more.
8. metal inhibitor compsn according to claim 1 and 2, wherein, said SEPIGEL 305 based polymer also contains suc as formula the structural unit shown in (II),
9. metal inhibitor compsn according to claim 8, wherein, the weight-average molecular weight of said SEPIGEL 305 based polymer is 1000-10000, and the weight ratio of the structural unit shown in structural unit shown in the said formula (II) and the formula (I) is 5-9: 1-5.
10. metal inhibitor compsn according to claim 1 and 2, wherein, said poly-epoxy succinic acid is for being selected from the compound shown in the formula (III) one or more,
HO (C
4H
2O
5M
2)
nH formula (III)
In the formula (III), M is H, Na or K, and n is the integer of 2-50.
11. metal inhibitor compsn according to claim 10, wherein, said n is the integer of 2-30.
12. metal inhibitor compsn according to claim 1 and 2; Wherein, said gluconate is to be selected from Sunmorl N 60S, Potassium Gluconate, Zinc Gluconate, copper gluconate, calglucon, Menesia and the Ferrous Gluconate one or more.
13. a metal inhibitor, said metal inhibitor contains metal inhibitor compsn and acidic aqueous solution, it is characterized in that, said metal inhibitor compsn is any described metal inhibitor compsn among the claim 1-12.
14. metal inhibitor according to claim 13, wherein, in said metal inhibitor gross weight, the content of metal inhibitor compsn is 50-75%, and the content of acidic aqueous solution is 25-50%.
15. metal inhibitor according to claim 14, wherein, in said metal inhibitor gross weight, the content of metal inhibitor compsn is 60-70%, and the content of acidic aqueous solution is 30-40%.
16. according to any described metal inhibitor among the claim 13-15, wherein, the concentration of said acidic aqueous solution is 10-36 weight %.
17. according to any described metal inhibitor among the claim 13-15, wherein, said acidic aqueous solution is to be selected from hydrochloric acid, aqueous sulfuric acid, aqueous nitric acid, the aqueous acetic acid one or more.
18. any described metal inhibitor is as the application of copper inhibitor among the claim 13-17.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110089883 CN102732892B (en) | 2011-04-11 | 2011-04-11 | Metal corrosion inhibitor composition, metal corrosion inhibitor thereof and application thereof |
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|---|---|---|---|
| CN 201110089883 CN102732892B (en) | 2011-04-11 | 2011-04-11 | Metal corrosion inhibitor composition, metal corrosion inhibitor thereof and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102732892A true CN102732892A (en) | 2012-10-17 |
| CN102732892B CN102732892B (en) | 2013-11-06 |
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| US11180826B2 (en) | 2014-06-25 | 2021-11-23 | Uwin Nanotech Co., Ltd. | Tin stripping method |
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