CN110158094A - A kind of formula and preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient - Google Patents
A kind of formula and preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient Download PDFInfo
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- CN110158094A CN110158094A CN201910623033.4A CN201910623033A CN110158094A CN 110158094 A CN110158094 A CN 110158094A CN 201910623033 A CN201910623033 A CN 201910623033A CN 110158094 A CN110158094 A CN 110158094A
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- carbon steel
- corrosion inhibitor
- phosphorus
- steel corrosion
- sulfonate
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- 238000005260 corrosion Methods 0.000 title claims abstract description 94
- 230000007797 corrosion Effects 0.000 title claims abstract description 93
- 229910000975 Carbon steel Inorganic materials 0.000 title claims abstract description 69
- 239000010962 carbon steel Substances 0.000 title claims abstract description 68
- JXBAVRIYDKLCOE-UHFFFAOYSA-N [C].[P] Chemical compound [C].[P] JXBAVRIYDKLCOE-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000003112 inhibitor Substances 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000009472 formulation Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 38
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims abstract description 36
- 229920001577 copolymer Polymers 0.000 claims abstract description 24
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 23
- 239000011592 zinc chloride Substances 0.000 claims abstract description 18
- 235000005074 zinc chloride Nutrition 0.000 claims abstract description 18
- 239000011684 sodium molybdate Substances 0.000 claims abstract description 15
- 235000015393 sodium molybdate Nutrition 0.000 claims abstract description 15
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000004090 dissolution Methods 0.000 claims abstract description 11
- 150000003751 zinc Chemical class 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 229920001897 terpolymer Polymers 0.000 claims abstract description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 239000011733 molybdenum Substances 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 14
- 239000011574 phosphorus Substances 0.000 abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 14
- 239000000498 cooling water Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005530 etching Methods 0.000 abstract description 3
- 230000003134 recirculating effect Effects 0.000 abstract description 3
- 229910000954 Medium-carbon steel Inorganic materials 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000855 fungicidal effect Effects 0.000 description 3
- 239000000417 fungicide Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 238000001162 G-test Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012496 blank sample Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical group [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920000805 Polyaspartic acid Polymers 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- DCEMCPAKSGRHCN-UHFFFAOYSA-N oxirane-2,3-dicarboxylic acid Chemical compound OC(=O)C1OC1C(O)=O DCEMCPAKSGRHCN-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 229920000141 poly(maleic anhydride) Polymers 0.000 description 1
- 108010064470 polyaspartate Proteins 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses the formulas and preparation method of a kind of without phosphorus carbon steel corrosion inhibitor of composite efficient, belong to technology of industrial recirculating cooling water treatment field, a kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient is made of the raw material of following quality proportioning: hydrochloric acid 2%~5%, zinc salt 10%~40%, co-polymer of sulfonate 10%~30%, molybdate 1%~5%, borate 1%~5%, deionized water 30%~80%；A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient, zinc chloride is added in water and adds water and stirs dissolution, it is then respectively adding sodium molybdate, Boratex, co-polymer of sulfonate, hydrochloric acid, dissolution is sufficiently stirred, obtains clear transparent solutions, without phosphorus carbon steel corrosion inhibitor is made, the zinc salt is zinc chloride, and the co-polymer of sulfonate is carboxylate-sulfonate-nonionic terpolymer.The present invention mainly inhibits the etching problem of industrial circulating cooling water system medium carbon steel material, has without phosphorus, efficiently, environmentally protective, degradable advantage.
Description
Technical field
The present invention relates to technology of industrial recirculating cooling water treatment fields, primarily directed to a kind of without phosphorus carbon steel of composite efficient
Formula of corrosion inhibiter and preparation method thereof.
Background technique
Along with the high speed development of industry, water resource is on the one hand caused to supply crisis, on the one hand the wastewater in waters of discharge
Serious destruction caused by the ecological balance saves industrial water, rationally for the demand for realizing sustainable development in particular for cold
But with water (60-80% that cooling water water consumption accounts for total water consumption), its recycling rate of waterused is improved, becomes the emphasis of country's concern,
But in cooling water use process, with continuous concentration, water mineral content can be also continuously increased, and exacerbate pipeline and heat exchange
The etching problem of device equipment, conventional carbon steel corrosion inhibitor are generally made of inorganic Phosphorus medicament, but with national " ten, water "
Recirculated water concentration rate is gradually increased in the raising step by step of publication and various regions for industrial outlet water management standard, industrial user, and
And without phosphorus degradable formula is gradually adopted, to reach and naturally keep in, research of non-phosphorus scale inhibitor can be developed and gradually at present
It is applied, gradually instead of the antisludging agent of original phosphorus system, such as poly-epoxy succinic acid, poly-aspartic-acid, hydrolyzed polymaleic anhydride
Acid anhydride etc., but there are no the corrosion inhibiter of the without phosphorus formula specifically for property.
Therefore, a kind of without phosphorus carbon steel corrosion inhibitor is developed, the anti-corrosion capability for improving carbon steel material becomes at current industrial water
The emphasis direction of haircut exhibition.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, it is slow that the purpose of the present invention is to provide a kind of without phosphorus carbon steels of composite efficient
The formula and preparation method thereof of agent is lost, the main etching problem for inhibiting industrial circulating cooling water system medium carbon steel material has nothing
Phosphorus, efficiently, environmentally protective, degradable advantage.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that: a kind of without phosphorus carbon steel corrosion inhibitor of composite efficient
Formula and preparation method, formula and a kind of without phosphorus carbon of composite efficient including a kind of without phosphorus carbon steel corrosion inhibitor of composite efficient
The preparation method of steel corrosion inhibiter, a kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient, by the raw material group of following quality proportioning
At: hydrochloric acid 2%~5%, zinc salt 10%~40%, co-polymer of sulfonate 10%~30%, molybdate 1%~5%, borate
1%~5%, deionized water 30%~80%.
A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient, comprising the following steps:
Zinc chloride is added in water and adds water and stirs dissolution, is then respectively adding sodium molybdate, Boratex, co-polymer of sulfonate, salt
Acid is sufficiently stirred dissolution, obtains clear transparent solutions, and without phosphorus carbon steel corrosion inhibitor is made.
Further, the zinc salt is zinc chloride.
Further, the co-polymer of sulfonate is carboxylate-sulfonate-nonionic terpolymer.
Further, the molybdate is sodium molybdate.
Further, the borate is Boratex.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
The without phosphorus carbon steel corrosion inhibitor that the present invention is prepared, using the inorganic and organic corrosion inhibiter compounding of different characteristics
At forming absorbent-type and appositional pattern protective film, double action is reduced to carbon steel using the inhibition mechanism of cathode and anode reaction
The purpose of material corrosion rate.
The without phosphorus carbon steel corrosion inhibitor that the present invention is prepared, it is not phosphorous, avoid the water body richness because of caused by the outlet of phosphorus from seeking
Feedingization problem alleviates environmental pollution, environmentally protective, meanwhile, can effectively it mitigate in circulation because bacterium and algae are a large amount of
Bring corrosion and Stickydeposit problem are bred, and then the dosage of fungicide can be reduced and corrosion of metal is influenced.
Specific embodiment
Technical scheme in the embodiment of the invention is clearly and completely described；Obviously, described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient: hydrochloric acid 2%, zinc chloride 10%, co-polymer of sulfonate
10%, sodium molybdate 1%, Boratex 1%, deionized water 76%.
A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient: being added zinc chloride, add hydrochloric acid stirring and dissolving in water,
It is then respectively adding sodium molybdate, Boratex, co-polymer of sulfonate is sufficiently stirred dissolution, obtains clear transparent solutions, is made without phosphorus
Carbon steel corrosion inhibitor.
Embodiment 2:
A kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient: hydrochloric acid 2%, zinc chloride 20%, co-polymer of sulfonate
20%, sodium molybdate 2%, Boratex 1%, deionized water 55%.
A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient: being added zinc chloride, add hydrochloric acid stirring and dissolving in water,
It is then respectively adding sodium molybdate, Boratex, co-polymer of sulfonate is sufficiently stirred dissolution, obtains clear transparent solutions, is made without phosphorus
Carbon steel corrosion inhibitor.
Embodiment 3:
A kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient: hydrochloric acid 3%, zinc chloride 25%, co-polymer of sulfonate
20%, sodium molybdate 2%, Boratex 1%, deionized water 39%.
A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient: being added zinc chloride, add hydrochloric acid stirring and dissolving in water,
It is then respectively adding sodium molybdate, Boratex, co-polymer of sulfonate is sufficiently stirred dissolution, obtains clear transparent solutions, is made without phosphorus
Carbon steel corrosion inhibitor.
Comparative example 1:
A kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient: hydrochloric acid 3%, zinc chloride 25%, co-polymer of sulfonate
20%, sodium molybdate 2%, deionized water 50%.
A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient: being added zinc chloride, add hydrochloric acid stirring and dissolving in water,
It is then respectively adding sodium molybdate, co-polymer of sulfonate is sufficiently stirred dissolution, obtains clear transparent solutions, and it is slow that without phosphorus carbon steel is made
Lose agent.
Comparative example 2:
A kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient: hydrochloric acid 3%, zinc chloride 25%, co-polymer of sulfonate
20%, Boratex 1%, deionized water 51%.
A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient: being added zinc chloride, add hydrochloric acid stirring and dissolving in water,
It is then respectively adding Boratex, co-polymer of sulfonate is sufficiently stirred dissolution, obtains clear transparent solutions, and it is slow that without phosphorus carbon steel is made
Lose agent.
Comparative example 3:
A kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient: hydrochloric acid 3%, zinc chloride 30%, co-polymer of sulfonate
20%, sodium molybdate 2%, deionized water 45%.
A kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient: being added zinc chloride, add hydrochloric acid stirring and dissolving in water,
It is then respectively adding sodium molybdate, co-polymer of sulfonate is sufficiently stirred dissolution, obtains clear transparent solutions, and it is slow that without phosphorus carbon steel is made
Lose agent.
Illustrate the without phosphorus carbon steel corrosion inhibitor of recirculated water of the invention to the corrosion mitigating effect of carbon steel material below by test.
The present invention is implemented referring to GB/T18175-2000 " the measurement rotary hanging plate method of standard water treatment agent corrosion inhibition "
Without phosphorus carbon steel corrosion inhibitor that example 1, embodiment 2 and embodiment 3 obtain, blank sample carry out rotary hanging plate corrosion test.
The corrosion inhibition rate of rate of metal corrosion and carbon steel material can be calculated as follows:
The annual corrosion rate (B) indicated with mm/a
B=KG/ATD
In formula:
K—3.65×103；
The quality of reduction, unit are gram (g) after G-test tube corrosion；
T-test period, unit are day (d)；
A-test tube corroded area, unit are square centimeter (cm2)；
The quality of reduction, unit are gram (g) after G-test tube corrosion；
D-density metal, unit are gram/cubic centimeter (g/cm3)；(carbon steel 7.85).
Corrosion inhibition rate can be calculated as follows:
I (%)=100% × (R0-Rt)/R0
I is corrosion inhibition rate in formula；R0For the corrosion rate for not adding corrosion inhibiter blank sample, RtAfter addition carbon steel corrosion inhibitor
The corrosion rate of sample.
Test water quality: this experimental water is the supplement water of certain chemical company's recirculated cooling water
Experimental condition:
Water temperature control is tested at 30 ± 1 DEG C, 75 revs/min of lacing film revolving speed, continuous operation 72h, embodiment 1-3 is obtained without phosphorus
The corrosion rate of carbon steel corrosion inhibitor, blank water sample, 20# carbon steel lacing film, corrosion inhibition rate.
Water temperature control is tested at 45 ± 1 DEG C, 75 revs/min of lacing film revolving speed, continuous operation 72h, embodiment 1-3 is obtained without phosphorus
The corrosion rate of carbon steel corrosion inhibitor, blank water sample, 20# carbon steel lacing film, corrosion inhibition rate.
Water temperature control is tested at 60 ± 1 DEG C, 75 revs/min of lacing film revolving speed, continuous operation 72h, embodiment 1-3 is obtained without phosphorus
The corrosion rate of carbon steel corrosion inhibitor, blank water sample, 20# carbon steel lacing film, corrosion inhibition rate.
Medicament adds concentration:
Based on power system capacity, 20mg/L (commodity concentration, similarly hereinafter), 30mg/L, 40mg/L, 50mg/L is added
Table 1: identical water sample temperature, 20# carbon steel test piece corrosion rate under different adding consistencies
Table 2: identical water sample temperature, 20# carbon steel test piece corrosion rate under different adding consistencies
Table 3: identical water sample temperature, 20# carbon steel test piece corrosion rate under different adding consistencies
It is seen from the above data that the embodiment of the present invention 3 is best-of-breed technology scheme, obtained without phosphorus carbon steel corrosion inhibitor pair
20# carbon steel test piece corrosion rate and corrosion inhibition rate control aspect effect are best, and thus obtained carbon-free steel corrosion inhibiter is to carbon steel test piece
Corrosion rate meet in " Code for design of industrial recirculating cooling water treatment " GB50050-2017, corrosion of carbon steel rate is less than
The requirement of 0.075mm/a.
In addition, comparing phosphorous carbon steel corrosion inhibitor, the use of without phosphorus carbon steel corrosion inhibitor reduces the usage amount of fungicide, drops
Low fungicide reduces the overall cost of water process to corrosion of metal, makes to drain outside recirculated water without phosphorus, can prevent bacterium
And the excessive multiplication of algae, it avoids causing water eutrophication, to eco-friendly.
The technical program, by the way that hydrochloric acid, zinc salt, co-polymer of sulfonate, molybdate and borate are added in water, hydrochloric acid can
Decompose pipeline and rust and oxide scale in equipment, the oxide in water can also be decomposed in time, reduce its content, prevent its
Pipeline scale maintains equipment service performance, zinc salt is a kind of cathodic to maintain pipeline environment and prevent equipment oxidation and rusting
Corrosion inhibiter, since the local ph in corrosion micro cell near cathodic region in solution increases, zinc ion and hydrogen-oxygen from
Son generates hydroxide deposits in cathodic region, it is suppressed that the cathode reaction of corrosion process and play corrosion inhibition, zinc salt can give birth to rapidly
Good at protective film, effect at low cost and when being used in combination with other corrosion inhibiter, co-polymer of sulfonate is a kind of novel contains
The polynary polyelectrolyte dirt dispersion agent of sulfonate, due on the strand of copolymer simultaneously containing strong acid, weak acid and it is non-from
Subbase group, dispersion effect is excellent, it be suitable for high temperature, high pH value, it is high-alkali under the conditions of use, in water iron oxide, calcium phosphate,
The deposition of trbasic zinc phosphate and calcium carbonate, have excellent inhibiting effect, calcium tolerance with higher, can with polyphosphonate,
Zinc salt, the quo of Conventional Water Treatment Programs such as organic phosphonate compounding, compatibility is good, molybdate category anodic oxidation membranous type corrosion inhibiter,
Ferrous-high Fe Mo complex oxide passivating film is formed on anode iron and plays corrosion inhibition, borate belongs to anode suppressive corrosion inhibiter,
There is good corrosion inhibition for carbon steel material, promotes metal box there are being adsorbed conducive to oxygen, borate absorption
The precipitation membrane of retardance metal ionization is formed in metal surface, without phosphorus carbon steel corrosion inhibitor is rationally matched using anode and cathode corrosion inhibiter
Than using the principle of oxidation filming and passivation film forming, carbon steel being effectively prevent to corrode, there is high temperature resistant, not facile hydrolysis, resistance to height
The performances such as pH, anti-oxidant, non-toxic harm basic to human-body biological etc., properties reach same kind of products at abroad level,
As environmental requirement limits the use of phosphorus, without phosphorus carbon steel corrosion inhibitor product is just gradually replacing traditional phosphorus system's class medicament and extensive
It uses.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient, which is characterized in that be made of the raw material of following quality proportioning:
Hydrochloric acid 2%~5%, zinc salt 10%~40%, co-polymer of sulfonate 10%~30%, molybdate 1%~5%, borate 1%~
5%, deionized water 30%~80%.
2. a kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient according to claim 1, it is characterised in that: add in water
Enter zinc chloride and add water and stir dissolution, be then respectively adding sodium molybdate, Boratex, co-polymer of sulfonate, hydrochloric acid is sufficiently stirred molten
Solution, obtains clear transparent solutions, without phosphorus carbon steel corrosion inhibitor is made.
3. a kind of formula of the without phosphorus carbon steel corrosion inhibitor of composite efficient according to claim 1, it is characterised in that: the zinc salt is
Zinc chloride.
4. a kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient according to claim 2, it is characterised in that: the sulphur
Hydrochlorate copolymer is carboxylate-sulfonate-nonionic terpolymer.
5. a kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient according to claim 2, it is characterised in that: the molybdenum
Hydrochlorate is sodium molybdate.
6. a kind of preparation method of the without phosphorus carbon steel corrosion inhibitor of composite efficient according to claim 2, it is characterised in that: the boron
Hydrochlorate is Boratex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115449783A (en) * | 2022-09-21 | 2022-12-09 | 岳阳隆兴实业有限公司 | Circulating water phosphorus-free prefilming agent and use method thereof |
| CN115613035A (en) * | 2021-07-14 | 2023-01-17 | 中国石油天然气股份有限公司 | Corrosion inhibitor compatibility method and application, and corrosion inhibitor composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115613035A (en) * | 2021-07-14 | 2023-01-17 | 中国石油天然气股份有限公司 | Corrosion inhibitor compatibility method and application, and corrosion inhibitor composition |
| CN115449783A (en) * | 2022-09-21 | 2022-12-09 | 岳阳隆兴实业有限公司 | Circulating water phosphorus-free prefilming agent and use method thereof |
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