CN114772754A - Circulating cooling water scale and corrosion inhibitor and preparation method thereof - Google Patents
Circulating cooling water scale and corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN114772754A CN114772754A CN202210586151.4A CN202210586151A CN114772754A CN 114772754 A CN114772754 A CN 114772754A CN 202210586151 A CN202210586151 A CN 202210586151A CN 114772754 A CN114772754 A CN 114772754A
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- Prior art keywords
- corrosion inhibitor
- acid
- cooling water
- circulating cooling
- scale
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- 238000005260 corrosion Methods 0.000 title claims abstract description 103
- 230000007797 corrosion Effects 0.000 title claims abstract description 103
- 239000003112 inhibitor Substances 0.000 title claims abstract description 96
- 239000000498 cooling water Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 229920001577 copolymer Polymers 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000000274 adsorptive effect Effects 0.000 claims abstract description 31
- 150000007980 azole derivatives Chemical class 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 36
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 22
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 16
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 14
- 239000012964 benzotriazole Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical group CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 12
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 12
- -1 itaconic acid-maleic acid-sodium propylene sulfonate Chemical compound 0.000 claims description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- HFCUBKYHMMPGBY-UHFFFAOYSA-N 2-methoxyethyl prop-2-enoate Chemical compound COCCOC(=O)C=C HFCUBKYHMMPGBY-UHFFFAOYSA-N 0.000 claims description 11
- 239000002202 Polyethylene glycol Substances 0.000 claims description 11
- 229920001223 polyethylene glycol Polymers 0.000 claims description 11
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 11
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 8
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 8
- 229920001529 polyepoxysuccinic acid Polymers 0.000 claims description 8
- 229920001897 terpolymer Polymers 0.000 claims description 8
- BRRYXDWMTPCDAM-UHFFFAOYSA-N C(C(=C)CC(=O)O)(=O)O.C=CC Chemical group C(C(=C)CC(=O)O)(=O)O.C=CC BRRYXDWMTPCDAM-UHFFFAOYSA-N 0.000 claims description 6
- 229960000583 acetic acid Drugs 0.000 claims description 6
- 239000001361 adipic acid Substances 0.000 claims description 6
- 235000011037 adipic acid Nutrition 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N dimethylmethane Natural products CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012362 glacial acetic acid Substances 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 239000001294 propane Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims description 5
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 4
- CKLJMWTZIZZHCS-UHFFFAOYSA-N D-OH-Asp Natural products OC(=O)C(N)CC(O)=O CKLJMWTZIZZHCS-UHFFFAOYSA-N 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 4
- CKLJMWTZIZZHCS-UWTATZPHSA-N L-Aspartic acid Natural products OC(=O)[C@H](N)CC(O)=O CKLJMWTZIZZHCS-UWTATZPHSA-N 0.000 claims description 4
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 229940024606 amino acid Drugs 0.000 claims description 4
- 235000001014 amino acid Nutrition 0.000 claims description 4
- 150000001413 amino acids Chemical class 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 150000008064 anhydrides Chemical class 0.000 claims description 4
- 229960005261 aspartic acid Drugs 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 4
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 claims description 3
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 claims description 3
- 235000013922 glutamic acid Nutrition 0.000 claims description 3
- 239000004220 glutamic acid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 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 description 2
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- 239000005639 Lauric acid Substances 0.000 claims description 2
- 150000008065 acid anhydrides Chemical class 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 2
- 150000007519 polyprotic acids Polymers 0.000 claims description 2
- 150000003141 primary amines Chemical class 0.000 claims description 2
- 239000000176 sodium gluconate Substances 0.000 claims description 2
- 229940005574 sodium gluconate Drugs 0.000 claims description 2
- 235000012207 sodium gluconate Nutrition 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 10
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010962 carbon steel Substances 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 150000003751 zinc Chemical class 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002455 scale inhibitor Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- 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
- C23F11/10—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 using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
-
- 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
- C23F11/10—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 using organic inhibitors
- C23F11/173—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a scale and corrosion inhibitor for circulating cooling water and a preparation method thereof, wherein the scale and corrosion inhibitor for circulating cooling water comprises the following components in percentage by mass: 30-45% of adsorptive high-molecular corrosion inhibitor, 15-25% of sulfonate copolymer, 3-8% of azole derivative, 20-35% of carboxylic acid copolymer and 0-25% of pure water. The scale and corrosion inhibitor for circulating cooling water has excellent scale and corrosion inhibition performance and wide practicability, has excellent protectiveness on carbon steel, stainless steel, copper and other material equipment, and prolongs the service life of the equipment.
Description
Technical Field
The invention relates to the technical field of water treatment agents, in particular to a circulating cooling water scale and corrosion inhibitor and a preparation method thereof.
Background
At present, most of water treatment chemicals in China are analyzed, imitated or developed according to foreign patents, and the water treatment chemicals in China have short industrial development and limited scientific research expenditure, so that the phenomena of weak foundation, backward technology and low overall level are caused. In particular, a certain gap still exists between the technology of special water quality and advanced fields and foreign countries, and the gap is mainly reflected in the serialization degree of novel environment-friendly water-soluble copolymer water treatment chemicals.
The novel water-soluble scale inhibitor has a huge system and a plurality of types, and related technical researches are complete. However, with the continuous upgrade of environmental protection requirements, the trend of water treatment chemicals to be green, biodegradable and non-phosphate is inevitable. Foreign water treatment chemicals gradually move to green, do not have phosphorus and limit the production of high-phosphorus medicaments, and a great deal of research is carried out on phosphorus-free scale inhibitors and corrosion inhibitors to obtain certain results. At present, the phosphorus-based formula still occupies a large proportion in the domestic market due to the excellent cost performance and the excellent treatment effect. Even though a non-phosphorus scale and corrosion inhibitor formula is adopted in the market at present, a large amount of inorganic corrosion inhibitors need to be compounded for use, and the use of the inorganic corrosion inhibitors not only causes secondary pollution to the environment, but also has poor stability in circulating water, and causes medicament deposition or precipitation and pollution to a system due to improper use.
Disclosure of Invention
Aiming at the problems in the related technology, the invention provides a circulating cooling water scale and corrosion inhibitor and a preparation method thereof, aiming at overcoming the technical problems in the prior related technology, the invention has excellent scale and corrosion inhibition performance and wide practicability, has excellent protection on carbon steel, stainless steel, copper and other material equipment, and prolongs the service life of the equipment, and the circulating cooling water scale and corrosion inhibitor is a full organic formula, has biodegradable components, is green and environment-friendly, cannot cause secondary pollution to the environment, and cannot cause eutrophication to a circulating water system to breed bacteria and algae. In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a scale and corrosion inhibitor for circulating cooling water, which comprises the following components:
adsorptive high-molecular corrosion inhibitor, sulfonate copolymer, azole derivative, sodium gluconate, benzoic acid, carboxylic acid copolymer and pure water;
wherein the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass:
30-45% of adsorptive high-molecular corrosion inhibitor, 15-25% of sulfonate copolymer, 3-8% of azole derivative, 20-35% of carboxylic acid copolymer and 0-25% of pure water.
Preferably, the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass: 35-40% of adsorptive high-molecular corrosion inhibitor, 15-20% of sulfonate copolymer, 3-8% of azole derivative, 25-35% of carboxylic acid copolymer and 0-20% of pure water.
Preferably, the sulfonate copolymer is one or more of itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer and itaconic acid-2-acryloyl-2-methyl sodium propane sulfonate copolymer.
Preferably, the carboxylic acid copolymer is one or two of itaconic acid-propylene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer and acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer; the azole derivatives are one or two of methylbenzotriazole and benzotriazole.
Preferably, the adsorptive polymeric corrosion inhibitor comprises the following components: amino acid, urotropine, primary ammonia, anhydride/polycarboxylic acid, thiourea and an initiator.
Preferably, the amino acid is one or two of L-aspartic acid and glutamic acid.
Preferably, the primary amine is one or more of aniline, dodecylamine, 1, 6-hexanediamine and ethylenediamine.
Preferably, the acid anhydride/polycarboxylic acid is one or more of adipic acid, itaconic acid and lauric acid, and the initiator is glacial acetic acid.
Preferably, the preparation method of the adsorptive polymeric corrosion inhibitor comprises the following steps:
s1: sequentially adding metered primary ammonia, an initiator and pure water into a reaction kettle, starting stirring, and heating to 45 ℃;
s2: adding urotropine into a reaction kettle, and reacting for 30-50min at 75-80 ℃;
s3: adding anhydride/polybasic acid, thiourea and a catalyst into a reaction kettle;
s4: heating and refluxing for 3.5-5 hours at 115-130 ℃.
S5: the temperature is reduced to below 65 ℃, and the adsorptive polymeric corrosion inhibitor is obtained after filtration and discharge. In order to achieve the purpose, the invention also provides the following technical scheme:
a preparation method of a circulating cooling water scale and corrosion inhibitor comprises the following steps:
s1: weighing raw materials according to the component content of the scale and corrosion inhibitor of the circulating cooling water;
s2: sequentially sucking the adsorptive high-molecular corrosion inhibitor, the sulfonate copolymer and the carboxylic acid copolymer into a reaction kettle;
s3: stirring at 25-35 deg.C for 15-20 min;
s4: adding the azole derivative into a reaction kettle from a manhole, heating to 45-50 ℃, and stirring for 10 min;
s5: sucking pure water into the reaction kettle;
s6: after all the reaction components are added, evenly stirring for 20-30min at the temperature of 25-35 ℃, and filtering to obtain the circulating cooling water scale and corrosion inhibitor.
Compared with the prior art, the invention has the beneficial effects that:
(1) the circulating cooling water scale and corrosion inhibitor has excellent scale and corrosion inhibition performance and wide practicability, has excellent protectiveness on carbon steel, stainless steel, copper and other material equipment, and prolongs the service life of the equipment;
(2) the invention relates to a scale and corrosion inhibitor for circulating cooling water and a preparation method thereof, the scale and corrosion inhibitor for circulating cooling water is of an all-organic formula, and the components can be biodegraded, so that the scale and corrosion inhibitor is green and environment-friendly and can not cause secondary pollution to the environment;
(3) the invention relates to a circulating cooling water scale and corrosion inhibitor and a preparation method thereof.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
The preparation method of the adsorptive high polymer corrosion inhibitor comprises the following components in parts by weight: 12 parts of L-aspartic acid, 5 parts of urotropine, 20 parts of 2:1 mixed liquor of aniline and ethylenediamine, 25 parts of 1:1 mixed liquor of adipic acid and itaconic acid, 8 parts of thiourea, 7 parts of glacial acetic acid, 0.2 part of catalyst and 23 parts of pure water.
The preparation method of the adsorptive polymeric corrosion inhibitor comprises the following steps:
s1: sequentially adding metered aniline and ethylenediamine mixed solution, glacial acetic acid and pure water into a reaction kettle, starting stirring, and heating to 45 ℃;
s2: adding urotropine into a reaction kettle, and reacting for 45-50min at 75-80 ℃;
s3: adipic acid, itaconic acid, thiourea and a catalyst are added into a reaction kettle;
s4: heating and refluxing for 4-5 hours at 120-130 ℃.
S5: the temperature is lowered to below 65 ℃, and then the filtering and the releasing of the adsorptive polymeric corrosion inhibitor P1 are carried out.
Example 2
The preparation method of the adsorptive high polymer corrosion inhibitor comprises the following components in parts by weight: 3 parts of L-aspartic acid, 12 parts of glutamic acid, 6 parts of urotropine, 20 parts of aniline, 22 parts of adipic acid, 6 parts of thiourea, 6 parts of glacial acetic acid, 0.3 part of catalyst and 25 parts of pure water.
The preparation method of the adsorptive polymeric corrosion inhibitor comprises the following steps:
s1: sequentially adding metered aniline, glacial acetic acid and pure water into a reaction kettle, starting stirring, and heating to 45 ℃;
s2: adding urotropine into a reaction kettle, and reacting for 30-45min at 75-80 ℃;
s3: adipic acid, thiourea and a catalyst are added into a reaction kettle;
s4: heating and refluxing at 115-125 ℃ for 3.5-4 hours.
S5: the temperature is lowered to below 65 ℃, and then the adsorption polymer corrosion inhibitor P2 is obtained after filtration and quantitative discharge.
Example 3
The scale and corrosion inhibitor for circulating cooling water comprises the following components:
the corrosion inhibitor comprises an attached high molecular corrosion inhibitor, an itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, an itaconic acid-2-acryloyl-2-methyl propane sodium sulfonate copolymer, benzotriazole, an itaconic acid-propylene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer and pure water.
Wherein the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass:
35% of adsorptive high molecular corrosion inhibitor, 10% of itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, 10% of itaconic acid-2-acryloyl-2-methyl sodium propane sulfonate copolymer, 6% of benzotriazole, 35% of itaconic acid-propylene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer and 4% of pure water.
A preparation method of a circulating cooling water scale and corrosion inhibitor comprises the following steps:
s1: weighing raw materials according to the component content of the scale and corrosion inhibitor of the circulating cooling water;
s2: sequentially sucking an adsorptive high molecular corrosion inhibitor, an itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, an itaconic acid-2-acryloyl-2-methyl propane sodium sulfonate copolymer and an itaconic acid-propylene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer into a reaction kettle;
s3: stirring at 25-35 deg.C for 15-20 min;
s4: adding benzotriazole into the reaction kettle from a manhole, heating to 45-50 ℃, and stirring for 10 min;
s5: sucking pure water into the reaction kettle;
s6: after all the reaction components are added, uniformly stirring for 20-30min at the temperature of 25-35 ℃, and filtering to obtain the circulating cooling water scale and corrosion inhibitor F1.
Example 4
A scale and corrosion inhibitor for circulating cooling water comprises the following components:
the coating comprises an adsorptive high-molecular corrosion inhibitor, an itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, an acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, benzotriazole, an itaconic acid-propene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer, an acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer and pure water;
wherein the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass:
40% of adsorptive high-molecular corrosion inhibitor, 15% of itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, 5% of acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, 3% of benzotriazole, 15% of itaconic acid-propene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer, 20% of acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer and 2% of pure water.
A preparation method of a circulating cooling water scale and corrosion inhibitor comprises the following steps:
s1: weighing raw materials according to the component content of the scale and corrosion inhibitor of the circulating cooling water;
s2: sequentially sucking an adsorptive high-molecular corrosion inhibitor, an itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, an acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, an itaconic acid-propylene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer and an acrylic acid/polyethylene glycol monomethyl ether acrylate bipolymer into a reaction kettle;
s3: stirring at 25-35 deg.C for 15-20 min;
s4: adding benzotriazole into the reaction kettle from a manhole, heating to 45-50 ℃, and stirring for 10 min;
s5: sucking pure water into the reaction kettle;
s6: after all the reaction components are added, evenly stirring for 20-30min at the temperature of 25-35 ℃, and filtering to obtain the circulating cooling water scale and corrosion inhibitor F2.
Example 5
A scale and corrosion inhibitor for circulating cooling water comprises the following components:
adsorptive high-molecular corrosion inhibitor, acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, benzotriazole, acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer and pure water;
wherein the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass:
38% of adsorptive high-molecular corrosion inhibitor, 20% of acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, 5% of benzotriazole, 25% of acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer and 12% of pure water.
A preparation method of a circulating cooling water scale and corrosion inhibitor comprises the following steps:
s1: weighing raw materials according to the content of the circulating cooling water scale and corrosion inhibitor components;
s2: sequentially sucking the adsorptive high-molecular corrosion inhibitor, acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer and acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer into a reaction kettle;
s3: stirring at 25-35 deg.C for 15-20 min;
s4: adding benzotriazole into the reaction kettle from a manhole, heating to 45-50 ℃, and stirring for 10 min;
s5: sucking pure water into the reaction kettle;
s6: after all the reaction components are added, uniformly stirring for 20-30min at the temperature of 25-35 ℃, and filtering to obtain the circulating cooling water scale and corrosion inhibitor F3.
Example 6
The scale and corrosion inhibitor for circulating cooling water comprises the following components:
adsorptive high molecular corrosion inhibitor, acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, itaconic acid-2-acryloyl-2-methyl sodium propane sulfonate copolymer, benzotriazole, methyl benzotriazole, acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer and pure water;
wherein the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass:
35% of adsorptive high-molecular corrosion inhibitor, 10% of acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, 10% of itaconic acid-2-acryloyl-2-methyl sodium propane sulfonate copolymer, 3% of benzotriazole, 5% of methyl benzotriazole, 30% of acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer and 7% of pure water.
A preparation method of a circulating cooling water scale and corrosion inhibitor comprises the following steps:
s1: weighing raw materials according to the component content of the scale and corrosion inhibitor of the circulating cooling water;
s2: sequentially sucking an adsorptive high-molecular corrosion inhibitor, an acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, an itaconic acid-2-acryloyl-2-methyl sodium propane sulfonate copolymer and an acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer into a reaction kettle;
s3: stirring at 25-35 deg.C for 15-20 min;
s4: adding benzotriazole and tolytriazole from manhole into reaction kettle, heating to 45-50 deg.C, and stirring for 10 min;
s5: sucking pure water into the reaction kettle;
s6: after all the reaction components are added, uniformly stirring for 20-30min at the temperature of 25-35 ℃, and filtering to obtain the circulating cooling water scale and corrosion inhibitor F4.
The circulating cooling water scale and corrosion inhibitor prepared by the invention is compared with a phosphorus-free and phosphorus-containing zinc salt system formula at home and abroad in a test, the water quality of a water sample surface water (yellow river water) during the test is 120mg/L of chloride ions, the total hardness is 7.6mmol/L (2135mg/L in terms of calcium carbonate), the calcium hardness is 187mg/L (in terms of calcium carbonate), the pH value is 8.12, the alkalinity is 139mg/L in terms of calcium carbonate), the test concentration ratio is 8.0 times, the pH value is controlled to be 8.3-8.8, the concentrated scale inhibition performance test method refers to GB/T18832-2008, the corrosion inhibition performance test method performs the test according to GB/T18175-2014, the chemical concentration is 15ppm, and the test result is shown in Table 1.
TABLE 1 data of the results
The test result shows that the scale and corrosion inhibitor for the circulating cooling water in the embodiment of the invention has great advantages in scale inhibition performance and corrosion inhibition performance, and in addition, the scale and corrosion inhibitor for the circulating cooling water prepared in the embodiment is green and environment-friendly, is biodegradable, and can not cause secondary pollution to a system and an ecological environment. Compared with similar products in the market, the phosphorus-free scale and corrosion inhibitor has great advantages in scale inhibition and corrosion inhibition, and on the other hand, the phosphorus-free scale and corrosion inhibitor in the market needs to be matched with zinc salt for auxiliary corrosion inhibition, has a narrow application range, and can generate whitening phenomena to different degrees particularly under the condition of high pH or alkalinity, thereby illustrating the complex instability of the zinc salt. Compared with the products containing phosphorus and zinc salt systems in the market, the product still shows better product performance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The scale and corrosion inhibitor for circulating cooling water is characterized by comprising the following components:
adsorptive high-molecular corrosion inhibitor, sulfonate copolymer, azole derivative, sodium gluconate, benzoic acid, carboxylic acid copolymer and pure water;
wherein the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass:
30-45% of adsorptive high-molecular corrosion inhibitor, 15-25% of sulfonate copolymer, 3-8% of azole derivative, 20-35% of carboxylic acid copolymer and 0-25% of pure water.
2. The circulating cooling water scale and corrosion inhibitor according to claim 1, wherein the circulating cooling water scale and corrosion inhibitor comprises the following components in percentage by mass: 35-40% of adsorptive high-molecular corrosion inhibitor, 15-20% of sulfonate copolymer, 3-8% of azole derivative, 25-35% of carboxylic acid copolymer and 0-20% of pure water.
3. The scale and corrosion inhibitor for recirculated cooling water according to claim 1, wherein the sulfonate copolymer is one or more of itaconic acid-maleic acid-sodium propylene sulfonate terpolymer, acrylic acid-alkene sulfonic acid-acrylate-allyl polyoxyethylene ether copolymer, and itaconic acid-2-acryloyl-2-methyl sodium propane sulfonate copolymer.
4. The circulating cooling water scale and corrosion inhibitor according to claim 1, wherein the carboxylic acid copolymer is one or two of itaconic acid-propylene tricarboxylic acid-acrylic acid-polyepoxysuccinic acid copolymer and acrylic acid/polyethylene glycol monomethyl ether acrylate binary copolymer; the azole derivatives are one or two of methylbenzotriazole and benzotriazole.
5. The circulating cooling water scale and corrosion inhibitor of claim 1, wherein the adsorptive polymeric corrosion inhibitor comprises the following components: amino acid, urotropine, primary ammonia, anhydride/polycarboxylic acid, thiourea and an initiator.
6. The circulating cooling water scale and corrosion inhibitor according to claim 5, wherein the amino acid is one or two of L-aspartic acid and glutamic acid.
7. The circulating cooling water scale and corrosion inhibitor according to claim 5, wherein the primary amine is one or more of aniline, dodecylamine, 1, 6-hexanediamine and ethylenediamine.
8. The circulating cooling water scale and corrosion inhibitor according to claim 5, wherein the acid anhydride/polycarboxylic acid is one or more of adipic acid, itaconic acid and lauric acid, and the initiator is glacial acetic acid.
9. The circulating cooling water scale and corrosion inhibitor according to claim 5, wherein the preparation method of the adsorptive polymeric corrosion inhibitor comprises the following steps:
s1: sequentially adding metered primary ammonia, an initiator and pure water into a reaction kettle, starting stirring, and heating to 45 ℃;
s2: adding urotropine into a reaction kettle, and reacting for 30-50min at 75-80 ℃;
s3: adding anhydride/polybasic acid, thiourea and a catalyst into a reaction kettle;
s4: heating and refluxing for 3.5-5 hours at 115-130 ℃.
S5: the temperature is lowered to below 65 ℃, and the adsorptive polymeric corrosion inhibitor is obtained after filtration and discharge.
10. A method for preparing the scale and corrosion inhibitor for circulating cooling water as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
s1: weighing raw materials according to the content of the circulating cooling water scale and corrosion inhibitor components;
s2: sequentially sucking the adsorptive high-molecular corrosion inhibitor, the sulfonate copolymer and the carboxylic acid copolymer into a reaction kettle;
s3: stirring at 25-35 deg.C for 15-20 min;
s4: adding the azole derivative into a reaction kettle from a manhole, heating to 45-50 ℃, and stirring for 10 min;
s5: sucking pure water into the reaction kettle;
s6: after all the reaction components are added, evenly stirring for 20-30min at the temperature of 25-35 ℃, and filtering to obtain the circulating cooling water scale and corrosion inhibitor.
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