CN112645457A - Environment-friendly corrosion and scale inhibitor for chromium salt wastewater evaporation system - Google Patents
Environment-friendly corrosion and scale inhibitor for chromium salt wastewater evaporation system Download PDFInfo
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- CN112645457A CN112645457A CN201910961010.4A CN201910961010A CN112645457A CN 112645457 A CN112645457 A CN 112645457A CN 201910961010 A CN201910961010 A CN 201910961010A CN 112645457 A CN112645457 A CN 112645457A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 74
- 238000005260 corrosion Methods 0.000 title claims abstract description 74
- 239000002351 wastewater Substances 0.000 title claims abstract description 61
- 150000001844 chromium Chemical class 0.000 title claims abstract description 45
- 239000002455 scale inhibitor Substances 0.000 title claims abstract description 37
- 238000001704 evaporation Methods 0.000 title claims abstract description 31
- 230000008020 evaporation Effects 0.000 title claims abstract description 31
- 229920001529 polyepoxysuccinic acid Polymers 0.000 claims abstract description 36
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- 239000011734 sodium Substances 0.000 claims abstract description 13
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- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims abstract description 8
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
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- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
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- 150000003751 zinc Chemical class 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
本发明涉及铬盐废水处理领域，具体涉及一种环保型铬盐废水蒸发系统缓蚀阻垢剂，由以下重量的原料组成：0.5L工业铬盐废水中加入1mg丙烯酸‑2‑丙烯酰胺‑2‑甲基丙磺酸共聚物（AA/AMPS）+3mg聚环氧琥珀酸（PESA）+80mg葡萄糖酸钠（C6H11O7Na）。本发明具有缓蚀阻垢效果好、绿色环保以及经济可靠的优点。The invention relates to the field of chromium salt waste water treatment, in particular to an environment-friendly corrosion and scale inhibitor for chromium salt waste water evaporation system, which is composed of the following raw materials: 0.5 L of industrial chromium salt waste water is added with 1 mg of acrylic acid-2-acrylamide-2 - Methylpropanesulfonic acid copolymer (AA/AMPS) + 3 mg polyepoxysuccinic acid (PESA) + 80 mg sodium gluconate (C 6 H 11 O 7 Na). The invention has the advantages of good corrosion and scale inhibition effect, environmental protection and economical reliability.
Description
Technical Field
The invention relates to the field of chromium salt wastewater treatment, in particular to an environment-friendly corrosion and scale inhibitor for a chromium salt wastewater evaporation system.
Background
The high-concentration salt-containing wastewater is quite common in various industrial wastewater in China, the mass fraction of inorganic salt-containing wastewater is higher than 3.5%, and a large amount of acid-base-containing wastewater, circulating sewage cooling water, reverse osmosis brine, regenerated waste liquid after ion exchange and the like generated in industries such as electric power, steel, chemical engineering and the like in actual industrial production activities belong to the high-concentration salt-containing wastewater.
The wastewater with high salt content has the characteristics of higher salt component concentration, wide wastewater source, part of heavy metal ions being toxic and the like, so the method is not suitable for a microorganism wastewater treatment method when high-concentration inorganic salt contained in the wastewater is removed. The membrane treatment method for industrial wastewater has the problems of high volatility, high use cost and the like of a membrane in the treatment process, and the application of the membrane treatment technology in the field of high-concentration salt-containing wastewater treatment is severely restricted. When the ion exchange wastewater method is used for treating high-salt wastewater, the selected ion exchanger has the problem of rapid saturation, once the ion exchanger is in a saturated state, a large amount of chemicals for regeneration needs to be additionally input or added, so that the treatment cost is additionally increased, and the operation process of the ion exchange wastewater treatment method is complicated, so that the large amount of treatment of the high-salt wastewater is not suitable for the ion exchange wastewater treatment method. In conclusion, the thermal heating evaporation technology accounts for a large proportion in the production and treatment of industrial high-concentration salt-containing wastewater, and particularly, the economic cost is more remarkable when the thermal heating evaporation technology is adjacent to a coal-fired power plant or industrial production waste heat which can be used for multiple times. The multi-effect evaporation treatment system can recycle and utilize the heat energy of the secondary steam for many times, so that the utilization efficiency of the heat energy of the primary steam can be improved to a great extent, and the effects of energy conservation and emission reduction can be realized. Therefore, when the industrial method is used for treating high-concentration industrial salt-containing wastewater, the thermal method heating evaporation treatment technology has obvious advantages compared with other industrial methods.
When the industrial method is used for treating the salt-containing wastewater, the multi-effect evaporation treatment method has obvious advantages compared with other industrial methods, but the multi-effect evaporation treatment system has the problems of serious scaling and serious corrosion, and the chromium salt wastewater is different from industrial production wastewater of other industries and has the characteristics of high concentration of soluble carbonate, bicarbonate and chloride compared with circulating cooling sewage; compared with the production wastewater of an oil-gas field, the chromate waste water scale mainly comprises calcium carbonate scale, does not contain impurities such as strontium sulfate scale, barium sulfate scale and the like, and has higher corrosion and scaling tendency of an evaporation system of the chromate waste water; compared with seawater, the chromium salt wastewater has more ion types and higher hardness. In conclusion, the chromium salt wastewater has the characteristics of various ion types, high concentration, wide sources, easy corrosion of pipelines and equipment, serious scaling problem and the like.
After the 90 s in the 20 th century, in order to solve the problems of environmental damage and the like caused by excessive use of phosphorus-containing compounds, American Betz laboratory experts develop a novel substitute of phosphorus-free polyepoxysuccinic acid (PESA) as an organic phosphorus corrosion and scale inhibitor through experimental research. At present, polyepoxysuccinic acid (PESA) and Polyaspartic Acid (PASP) have the advantages of corrosion inhibition and scaling inhibition, easy environmental acceptance and the like, and become hot spots for scientific research and development of water treatment agents at home and abroad. At present, the water treatment medicament market in China is nearly the second large market of water treatment medicaments all over the world, and two corrosion and scaling inhibitors mainly exist, wherein one of the two corrosion and scaling inhibitors is an organic phosphate type water treatment medicament; the other is a polycarboxylic acid type water treatment agent.
In the whole industrial chain structure of water treatment agents in China, water treatment agents independently developed in the chemical industry are still in the primary stage, and due to the particularity of industrial chromium salt wastewater, corrosion and scale inhibition water treatment agents commonly used in the current stage are not suitable for the field of industrial chromium salt wastewater. The problems of corrosion and scaling of the chromium salt wastewater evaporation system are serious, so that the frequency of system maintenance is obviously increased, and the risk of production safety accidents is obviously increased. Therefore, the novel high-efficiency multifunctional water treatment agent is researched, developed and popularized to use, the safe, effective and continuous operation of the industrial chromium salt wastewater evaporation system is ensured, the service life of the facilities for producing the chromium salt wastewater evaporation system is prolonged, the occurrence rate of production safety accidents is reduced, and the preparation method has particularly important humanistic, economic and environmental values.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a corrosion and scale inhibitor of an environment-friendly chromium salt wastewater evaporation system. The invention has the advantages of good corrosion and scale inhibition effect, environmental protection, economy and reliability.
The corrosion and scale inhibitor for the environment-friendly chromium salt wastewater evaporation system is characterized by comprising the following raw materials in parts by weight: adding 1mg of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA/AMPS) +3mg of polyepoxysuccinic acid (PESA) +80mg of sodium gluconate (C) into each 0.5L of industrial chromium salt wastewater6H11O7Na）。
Further, the corrosion and scale inhibitor for the environment-friendly chromium salt wastewater evaporation system according to claim 1, which comprisesCharacterized in that the industrial chromium salt wastewater mainly contains Cr3+、Ca2+、HCO3 -Etc. and Cr3+The concentration is below 500 mg/L.
Further, the corrosion and scale inhibitor for the environment-friendly chromium salt wastewater evaporation system according to claim 1, wherein the mixing mass ratio of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA/AMPS) to the polyepoxysuccinic acid (PESA) is 1: 3.
The technical scheme adopted by the invention is as follows: firstly, the scaling and corrosion effects of a chromium salt wastewater evaporation system are analyzed, and the known and applicable environment-friendly scaling inhibitor is utilized, such as polyepoxysuccinic acid (PESA), acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA/AMPS), hydrolyzed polymaleic anhydride (HPMA) and the like, a static scale inhibition method is used for measuring the calcium carbonate scale inhibition performance, and analysis shows that the scale inhibition rate can be effectively improved by mixing and compounding the three scale inhibitors, then, the scale inhibition rate of the mixed type scale inhibitor obtained by PESA, AA/AMPS and HPMA under different mixing ratios is researched, when the mixing ratio of AA/AMPS and PESA in the environment-friendly mixed scale inhibitor for chromium salt wastewater is 1:3 or 2:1, the scale inhibition effect is good, and when the mixing ratio of AA/AMPS to HPMA is 1:3, the scale inhibition function is optimal. Secondly, selecting a formula of a compound scale inhibitor with better corrosion inhibition performance and a mixed corrosion inhibition chemical with synergistic effect, testing and verifying the mixed corrosion inhibitor with the mixing ratio of AA/AMPS to PESA being 1:3 or 2:1 and the mixing ratio of AA/AMPS to HPMA being 1:3 according to the result obtained in the previous step, then testing the corrosion rate of the mixed scale inhibitor formed by combining AA/AMPS and PESA and HPMA in a specific ratio to carbon steel by adopting a static sample weight loss method, and obtaining the scale inhibitor with better corrosion inhibition performance after the experiment shows that the mixing ratio of AA/AMPS to PESA is 1: 3. Finally, corrosion inhibitors known to be suitable, such as sodium molybdate (Na), are contemplated2MoO4) Zinc sulfate (ZnSO)4) Sodium gluconate (C)6H11O7Na), etc., mixed with 1mgAA/AMPS +3mgPESA mixed type scale inhibitor, and then subjected to corrosion by using a static sample weight loss methodThe corrosion inhibition performance test results show that 1mgAA/AMPS +3mgPESA +80mgC is obtained6H11O7Na (APC type corrosion and scale inhibitor for short) or 1mgAA/AMPS +3mgPESA +30mgNa2MoO4The corrosion inhibition and scale inhibition performance of the two combined compound corrosion and scale inhibitors (APM corrosion and scale inhibitors for short) is best. The corrosion rate of the metal carbon steel (20 #) material and the calcium carbonate scaling condition of the two obtained APC and APM corrosion and scale inhibitors with corrosion inhibition performance and scaling inhibition performance are verified and compared in the chromium salt wastewater, and the test result verifies that the corrosion inhibition effect and the scaling inhibition effect of the APC corrosion and scale inhibitor in the chromium salt wastewater are superior to those of the APM corrosion and scale inhibitor, so that the optimal formula of the corrosion and scale inhibitor of the chromium salt wastewater evaporation system is obtained.
The formula of the corrosion and scale inhibitor is obtained by experimental analysis, namely 1mgAA/AMPS +3mgPESA +80mgC is added into 0.5L industrial chromium salt wastewater6H11O7Na, and the obtained formula has the advantages of good corrosion and scale inhibition effects, environmental protection, economy and reliability. After the optimal formula passes corrosion and calcium carbonate scaling tests, the annual corrosion rate of a metal carbon steel (20 #) material is greatly reduced, and meanwhile, the scale inhibition rate of a wastewater solution is obviously improved; through a biological natural degradation test, the corrosion and scale inhibitor is verified to have excellent biological natural degradation performance, all components are organic matters, no phosphorus is contained, the effects of environmental protection, economy and reliability are achieved, and the formula can be used.
The beneficial effects of the invention are as follows.
(1) The polyepoxysuccinic acid (PESA) in the components has a phosphorus-free and nitrogen-free structure, combines two functions of scale inhibition and corrosion inhibition, and contains a plurality of polar functional groups such as carboxyl (-COOH) and hydroxyl (-OH) in PESA molecules, wherein the carboxyl (-COOH) is a weak acid functional group which can chelate and disperse a plurality of multivalent cations and break up the sequential arrangement of crystal lattices; hydroxyl (-OH) is a hydrophilic functional group, which can increase the solubility of scale-forming substances and has a certain effect on inhibiting phosphate scale. Experiments show that PESA has excellent scale inhibition function on calcium sulfate scale, and has very high scale inhibition function when the concentration of PESA is lowHigh scale inhibition rate; however, as the concentration of PESA increased, the calcium sulfate scale inhibition effect no longer increased significantly, showing a dissolution limit effect. In addition, the insertion of oxygen atoms into the PESA molecule greatly enhances its scale inhibition function. PESA is also particularly useful in high pH industrial wastewater where PESA may be used in combination with Ca2+The formed chelate which is stably dissolved in water plays a role in inhibiting the scaling, and the chelate possibly interacts with the crystal lattice of the formed scaling crystal to prevent the ordered arrangement of the crystal scaling to play a role in inhibiting the scaling.
(2) And AA/AMPS has an excellent scale inhibition function, and is suitable for inhibiting the scale formation process in high-salt and high-hardness industrial wastewater. It can effectively improve the actual concentration ratio of the industrial wastewater evaporation treatment system and can effectively disperse the tiny grains formed in the treatment process in the system. The AA/AMPS also has good dispersion effect, has good function of fixing zinc element in the treatment of industrial wastewater containing zinc salt, and can disperse iron oxide formed in an industrial wastewater evaporation treatment system, effectively prevent excessive iron oxide from accumulating on the surface of a metal material of the industrial wastewater evaporation treatment system, increase the heat transfer efficiency of the industrial wastewater evaporation treatment system and inhibit the growth of bacteria on the surface of the metal material of equipment of the industrial wastewater evaporation treatment system. Meanwhile, carboxyl (-COOH) functional groups in AA/AMPS molecules enable the AA/AMPS molecules to have the function of inhibiting corrosion.
(3) Sodium gluconate (C)6H11O7Na) is a common chemical which contains a plurality of hydroxyl groups in the molecular structure and has an excellent corrosion inhibition function, is mixed with other different types of chemicals with corrosion inhibition functions for use, and has the advantages and advantages which are incomparable with other chemicals with corrosion inhibition and scaling inhibition functions used at present.
(4) The invention is the compounding of the corrosion inhibitor and the scaling inhibitor, and the using function after the mixing and compounding is more effective than that of singly using any one water treatment medicament with the same quality, namely the synergistic interaction between different types of water treatment medicaments. Experiments prove that the formula obtained by the invention has excellent scale inhibition performance, and the calcium carbonate scale inhibition rate is close to 91.94%; the corrosion inhibitor has excellent corrosion inhibition performance on metallic carbon steel (20 #), and the annual corrosion rate of the metallic carbon steel (20 #) can be reduced to 0.15 mm/a; meanwhile, the biodegradable polyester film has remarkable natural biological degradation performance, and the degradation rate is over 88 percent after 28 days.
Drawings
FIG. 1 is a graph showing the corrosion rate curves of two corrosion and scale inhibitors formulations of example 1 and example 2 on a metallic carbon steel (20 #) material.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
An environment-friendly chromium salt wastewater evaporation system corrosion and scale inhibitor is composed of the following raw materials by weight:
0.5L of industrial chromium salt wastewater is added with 1mg of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA/AMPS) +3mg of polyepoxysuccinic acid (PESA) +80mg of sodium gluconate (C)6H11O7Na）。
Example 2
An environment-friendly chromium salt wastewater evaporation system corrosion and scale inhibitor is composed of the following raw materials by weight:
0.5L of industrial chromium salt wastewater is added with 1mg of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA/AMPS) +3mg of polyepoxysuccinic acid (PESA) +30mg of sodium molybdate (Na)2MoO4）。
Example 3
An environment-friendly chromium salt wastewater evaporation system scaling inhibitor is composed of the following raw materials by weight:
to 0.5L of the industrial chromium salt wastewater, 1mg of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA/AMPS) +3mg of polyepoxysuccinic acid (PESA) was added.
A metal carbon steel (20 #) material corrosion comparison test is designed in the embodiment 1 and the embodiment 2, and the specific operation is that a No. 1-5 metal carbon steel (20 #) material test piece is selected and respectively polished to a mirror surface, then the mirror surface is placed into a simulated industrial chromium salt wastewater water sample to be heated at a constant temperature (70 ℃) for 10 hours, wherein the formula of the embodiment 1 and the embodiment 2 is placed into the simulated industrial chromium salt wastewater water sample before being heated at the constant temperature, and finally, the experiment results are obtained after drying and weighing, and are shown in the following table:
as shown in the figure I, the corrosion and scale inhibitor with two formulas has different corrosion inhibition effects on metal carbon steel (20 #) materials in chromium salt wastewater with different concentrations, and the formula in the example 1 (1 mgAA/AMPS +3mgPESA +80mgC is added into 0.5L chromium salt wastewater)6H11O7Na) has better corrosion inhibition effect on metallic carbon steel (20 #) materials in industrial chromium salt wastewater.
And then, a calcium carbonate scaling comparison test is designed by the formula of example 1 and the formula of example 3 which have better corrosion inhibition effects, and the difference between example 1 and example 3 is that sodium gluconate is added into example 1. Specially prepared Ca2+The concentration is 500mg/L, HCO3 -The concentration is 500mg/L, Cr3+No. 1 and No. 2 simulated water samples with the concentration of 100mg/L are placed in a 0.5L beaker for later use; preparation of Ca2+The concentration is 500mg/L, HCO3 -The concentration is 500mg/L, Cr3+Placing No. 3 and No. 4 simulation water samples with the concentration of 200mg/L into a 0.5L beaker for later use; 1mgAA/AMPS +3mgPESA +80mgC are added into No. 1 and No. 3 water samples respectively6H11O7Adding 1mgAA/AMPS +3mgPESA into Na, No. 2 and No. 4, respectively, heating at constant temperature in a constant temperature water bath kettle at 70 deg.C for 10 hr, and measuring the Ca content in the water sample2+And (4) concentration.
The fouling inhibition of the formulations of example 1 and example 3 were compared and the results are shown in the following table:
according to the data in the table canIt is shown that the addition of a certain amount of sodium gluconate to the formulation of example 3 not only improves the corrosion inhibition effect of the formulated scale inhibitor, but also improves the scale inhibition effect to a certain extent, and the formulation of the corrosion and scale inhibitor of example 1, i.e. 1mgAA/AMPS +3mgPESA +80mgC6H11O7Na has a better scale inhibition effect.
The corrosion rate testing method comprises the following steps: pretreatment of a metallic carbon steel (20 #) material in a test: polishing the corrosion surface of a test piece of the metal carbon steel (20 #) material into a smooth mirror surface, and then washing and wiping the mirror surface by using distilled water. Placing the metal carbon steel (20 #) material which is pretreated in the test in a drying oven, drying for more than 5 hours, weighing (to the accuracy of 0.001g), and storing in the drying oven for later use; designing a test scheme, and preparing a corrosion inhibitor solution with corresponding concentration requirements according to the specific requirements of the test scheme; preparing an experimental water sample for simulating the chromium salt wastewater in a laboratory according to the design requirements of an experimental scheme; adding corrosion inhibition chemicals with corresponding concentration into the beaker, and then adding simulated chromium salt wastewater to 0.5L. The test piece is hung in the center of a beaker in a mode that the test piece is completely immersed, the test piece is noticed that the test piece cannot be in direct contact with the wall of the beaker, then the test piece is placed in a constant-temperature water bath kettle at 70 ℃, the constant-temperature heating time is 10 hours, so that the test sample liquid can be naturally volatilized, and distilled water is added at intervals to keep the liquid level of the test water sample at a 0.5L scale line. Chemicals with corrosion inhibition function are not added in the blank control experiment group; test post-treatment of the test piece: taking out a test sample from a constant-temperature water bath, cleaning the surface of the test sample, immersing the test sample in an acid solution with the pH value lower than 4, taking out the test sample after 5 minutes, cleaning the test sample with distilled water, immersing the test sample in a sodium hydroxide solution with the pH value higher than 10, taking out the test sample after half a minute, wiping the test sample, then putting the test sample into absolute ethyl Alcohol (AR), drying the test sample in a constant-temperature drying box for more than 5 hours after 3 minutes, and weighing the test sample (the weight is accurate to 0.001 g). Only carrying out post-test treatment on the pickling blank test group; the annual corrosion rate (mm/a) is shown as follows:
in the formula: m represents the mass loss of the test piece after the corrosion test, unit g;
m0represents the average mass loss of the blank test piece in unit g;
s represents the surface area of the test piece in cm2；
ρ represents the density of the test piece in g/cm3；
t represents constant temperature experiment time in unit h;
8760 represents the number of hours of 1 year;
10 represents millimeters of 1cm, mm/cm.
The scale inhibition rate test method comprises the following steps: weighing calcium chloride (AR) with a fixed mass, putting the calcium chloride (AR) into a beaker with the capacity of 0.5L, adding distilled water with a certain volume to ensure that the concentration of calcium ions in the beaker is 500mg/L and the concentration of bicarbonate ions is 500mg/L, calculating and adding a certain volume of scale inhibitor, and adding no scale inhibitor in a blank test group; placing the test group beakers and the blank group beakers in a constant-temperature water bath pan at the temperature of (70 +/-1) DEG C for heating at constant temperature for 10 hours; thirdly, adding a certain amount of sodium hydroxide solution and 0.2g of calcium-carboxylic acid indicator into the test tube, measuring 5mL of supernatant, pouring the supernatant into the test tube, titrating the supernatant into bright blue by using EDTA standard solution, and reading the volume of the consumed EDTA standard solution; tetra (Ca)2+The concentration P (mg/L) is calculated as follows:
in the formula: v2Representing the volume of EDTA standard solution used in mL;
P1representing the concentration of EDTA standard solution in mol/L;
V1measuring the volume of the test solution in unit mL;
m represents the molar mass of calcium in g/mol, M = 40.08;
the scale inhibition rate W (%) is as follows:
in the formula: p1Representing the calcium ion concentration after the scale inhibitor adding group tests, and the unit is mg/mL;
P0represents the calcium ion concentration after the blank group test, and the unit is mg/mL;
0.5 represents the concentration of calcium ions in the test solution in mg/mL.
From the above table data, it can be seen that the data items in example 1 are the best, and the best implementation.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477096A (en) * | 2021-09-07 | 2021-10-08 | 湖南沁森高科新材料有限公司 | Alkaline low-phosphorus reverse osmosis membrane scale inhibitor and preparation method and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674570A (en) * | 2011-03-15 | 2012-09-19 | 中国石油化工股份有限公司 | Composite low-phosphorus corrosion and scale inhibitor and application thereof |
| CN102815796A (en) * | 2011-06-10 | 2012-12-12 | 中国石油化工股份有限公司 | Composite phosphorus-free corrosion and scale inhibitor and its application |
| CN103420497A (en) * | 2013-08-26 | 2013-12-04 | 南京理工大学 | Non-phosphorous corrosion and scale inhibitor containing lignosulfonate and application thereof |
| CN103638629A (en) * | 2013-12-10 | 2014-03-19 | 西南科技大学 | Process for integrally reducing solidified chromium slag |
| CN103771599A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | Phosphorus-free composite scale and corrosion inhibitor and application thereof as well as circulating water treatment method |
| CN108358326A (en) * | 2018-02-06 | 2018-08-03 | 兰溪市哥特生物技术有限公司 | A kind of preparation method of the water quality stabilizer containing sodium metasilicate |
| CN109987724A (en) * | 2019-04-17 | 2019-07-09 | 武汉金鼎新环保科技有限公司 | A kind of anti-incrustation corrosion inhibitor suitable for steel industry recirculated water |
| CN110066028A (en) * | 2018-01-23 | 2019-07-30 | 中国石油化工股份有限公司 | Phosphate-free corrosion inhibition antisludging agent composition and phosphate-free corrosion inhibition antisludging agent and its application |
-
2019
- 2019-10-11 CN CN201910961010.4A patent/CN112645457A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674570A (en) * | 2011-03-15 | 2012-09-19 | 中国石油化工股份有限公司 | Composite low-phosphorus corrosion and scale inhibitor and application thereof |
| CN102815796A (en) * | 2011-06-10 | 2012-12-12 | 中国石油化工股份有限公司 | Composite phosphorus-free corrosion and scale inhibitor and its application |
| CN103771599A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | Phosphorus-free composite scale and corrosion inhibitor and application thereof as well as circulating water treatment method |
| CN103420497A (en) * | 2013-08-26 | 2013-12-04 | 南京理工大学 | Non-phosphorous corrosion and scale inhibitor containing lignosulfonate and application thereof |
| CN103638629A (en) * | 2013-12-10 | 2014-03-19 | 西南科技大学 | Process for integrally reducing solidified chromium slag |
| CN110066028A (en) * | 2018-01-23 | 2019-07-30 | 中国石油化工股份有限公司 | Phosphate-free corrosion inhibition antisludging agent composition and phosphate-free corrosion inhibition antisludging agent and its application |
| CN108358326A (en) * | 2018-02-06 | 2018-08-03 | 兰溪市哥特生物技术有限公司 | A kind of preparation method of the water quality stabilizer containing sodium metasilicate |
| CN109987724A (en) * | 2019-04-17 | 2019-07-09 | 武汉金鼎新环保科技有限公司 | A kind of anti-incrustation corrosion inhibitor suitable for steel industry recirculated water |
Non-Patent Citations (2)
| Title |
|---|
| 惠琼: ""无磷复合缓蚀阻垢剂的研制及机理研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 诸勇等: ""铬盐废水蒸发系统腐蚀突变与缓蚀工况研究"", 《工业安全与环保》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477096A (en) * | 2021-09-07 | 2021-10-08 | 湖南沁森高科新材料有限公司 | Alkaline low-phosphorus reverse osmosis membrane scale inhibitor and preparation method and application thereof |
| CN113477096B (en) * | 2021-09-07 | 2022-02-01 | 湖南沁森高科新材料有限公司 | Alkaline low-phosphorus reverse osmosis membrane scale inhibitor and preparation method and application thereof |
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