CN106315880B - A kind of anti-incrustation corrosion inhibitor and preparation method thereof - Google Patents
A kind of anti-incrustation corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN106315880B CN106315880B CN201610856733.4A CN201610856733A CN106315880B CN 106315880 B CN106315880 B CN 106315880B CN 201610856733 A CN201610856733 A CN 201610856733A CN 106315880 B CN106315880 B CN 106315880B
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- 238000005260 corrosion Methods 0.000 title claims abstract description 80
- 230000007797 corrosion Effects 0.000 title claims abstract description 80
- 239000003112 inhibitor Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000007864 aqueous solution Substances 0.000 claims abstract description 121
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 69
- LMHAGAHDHRQIMB-UHFFFAOYSA-N 1,2-dichloro-1,2,3,3,4,4-hexafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(Cl)C1(F)Cl LMHAGAHDHRQIMB-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000006260 foam Substances 0.000 claims abstract description 29
- 229920001577 copolymer Polymers 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 239000011259 mixed solution Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 15
- -1 reacts 50~60min Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract 3
- 229920000805 Polyaspartic acid Polymers 0.000 claims description 66
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 43
- 238000003756 stirring Methods 0.000 claims description 34
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 32
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 32
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 28
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 26
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 26
- 238000005201 scrubbing Methods 0.000 claims description 25
- 235000019864 coconut oil Nutrition 0.000 claims description 22
- 239000003240 coconut oil Substances 0.000 claims description 22
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 22
- 239000000194 fatty acid Substances 0.000 claims description 22
- 229930195729 fatty acid Natural products 0.000 claims description 22
- 150000004665 fatty acids Chemical class 0.000 claims description 22
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 22
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 22
- KAKVFSYQVNHFBS-UHFFFAOYSA-N (5-hydroxycyclopenten-1-yl)-phenylmethanone Chemical compound OC1CCC=C1C(=O)C1=CC=CC=C1 KAKVFSYQVNHFBS-UHFFFAOYSA-N 0.000 claims description 20
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 20
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 17
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 17
- 235000011152 sodium sulphate Nutrition 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 159000000000 sodium salts Chemical class 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 10
- 235000019198 oils Nutrition 0.000 claims description 10
- 239000012266 salt solution Substances 0.000 claims description 10
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 8
- 239000001099 ammonium carbonate Substances 0.000 claims description 8
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 8
- 150000003863 ammonium salts Chemical class 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 230000003301 hydrolyzing effect Effects 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 230000005764 inhibitory process Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 12
- 239000003814 drug Substances 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 3
- IQEKRNXJPCBUAT-UHFFFAOYSA-N 2-[hydroperoxy(hydroxy)phosphoryl]acetic acid Chemical compound OOP(O)(=O)CC(O)=O IQEKRNXJPCBUAT-UHFFFAOYSA-N 0.000 abstract 1
- JKTORXLUQLQJCM-UHFFFAOYSA-N 4-phosphonobutylphosphonic acid Chemical compound OP(O)(=O)CCCCP(O)(O)=O JKTORXLUQLQJCM-UHFFFAOYSA-N 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000000498 cooling water Substances 0.000 description 9
- CQQUWTMMFMJEFE-UHFFFAOYSA-N 2-chloro-n,n-diethylacetamide Chemical compound CCN(CC)C(=O)CCl CQQUWTMMFMJEFE-UHFFFAOYSA-N 0.000 description 8
- 238000011161 development Methods 0.000 description 7
- 150000002191 fatty alcohols Chemical class 0.000 description 5
- 239000002455 scale inhibitor Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000006265 aqueous foam Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion 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
- 238000013329 compounding Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000013051 drainage agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect 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
- 229920000052 poly(p-xylylene) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 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
- 239000002699 waste material Substances 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
- C23F14/00—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes
- C23F14/02—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes by chemical means
-
- 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
- C02F5/14—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 phosphorus
-
- 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
- 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
- C23F11/167—Phosphorus-containing compounds
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A kind of anti-incrustation corrosion inhibitor and preparation method thereof, is related to technical field of water treatment chemical.The anti-incrustation corrosion inhibitor; including raw material and its mass ratio of the material are as follows: 2- phosphinylidyne butane -1; 2,4- tricarboxylic acids (PBTCA): 2- hydroxyphosphonoacetic acid (HPAA): acrylic acid/esters copolymer (HB-901): poly-aspartate (PASP): foam discharging agent=(2~3): (2~3): (5~8): (10~15): (5~8).Preparation method, including step 1: material mixing obtains mixed solution；Step 2, foam discharging agent is prepared；Step 3, mixed solution is added in poly-aspartate aqueous solution, reacts 50~60min, foam discharging agent is added, at 40~50 DEG C, stirred 5~6h, anti-incrustation corrosion inhibitor is made.The anti-incrustation corrosion inhibitor is a kind of anti-incrustation corrosion inhibitor for preventing pipeline and equipment from corroding；Double effects with scale inhibition and inhibition are a kind of composite drugs；It is environmentally protective with certain biodegradability；The scope of application is wider.
Description
Technical Field
The invention relates to the technical field of water treatment agents, in particular to a scale and corrosion inhibitor and a preparation method thereof.
Background
In some cooling equipment (such as a cooling tower, an air cooler and the like), heat exchange equipment (such as a heat exchanger, a condenser), a water pump, a pipeline and the like, water is used as a cooling medium and is recycled, and in the process of recycling industrial cooling water, due to the rising of water temperature and concentration rate, the contents of microorganisms, phosphate, bicarbonate, calcium ions and dissolved oxygen can be greatly increased, so that the stability of calcium carbonate scale can be increased, and the scaling phenomenon can be generated. In addition, inorganic scale, mucus, silt, impurities and the like can be released by microorganisms in the moving process, so that the deposits are attached to the surface of the metal to form an oxygen concentration cell, and the metal material is promoted to be corroded. In addition, because the anoxic environment between the metal surface and the precipitate can cause the sulfate reducing bacteria to be propagated, the microbial corrosion of the metal material is accelerated, the heat exchange efficiency of equipment, the increase of energy consumption, the blockage of pipelines and the like are seriously influenced, and therefore, the application of the corrosion inhibitor draws attention of people.
In order to maintain the heat exchange efficiency of heat exchange equipment, prolong the service life of cooling water system equipment and improve the recycling rate of cooling water, the most common method at present is to add a certain amount of water quality stabilizer, namely scale and corrosion inhibitor, into a circulating cooling water system. The early treatment of the circulating cooling water is generally to control the scaling of the water by adding acid to adjust the pH value of the water to be 6.0-6.5 and then adding a corrosion inhibitor to control the corrosion of equipment; in order to save water, the prior circulating cooling water is developed to a high concentration multiple technology, and the method is developed to an alkaline treatment mode of adding a scale and corrosion inhibitor and combining high pH and the like by simple acid adding and low pH operation control, but the mode is easier to cause the cooling system to generate scale, so the development and the application of the high-efficiency scale and corrosion inhibitor are required.
At present, China also develops some scale and corrosion inhibitors, the development of the scale and corrosion inhibitors for circulating cooling water systems goes through the development process from inorganic to organic, from high phosphorus, low phosphorus to no phosphorus, the development of the scale and corrosion inhibitors for circulating cooling water in the future follows the sustainable development strategy, and the greening is undoubtedly the central strategy for the development of the scale and corrosion inhibitors and is also the research and development direction of the scale and corrosion inhibitors. Corrosion and scale inhibition are two inseparable processes, and the corrosion inhibitor and the scale inhibitor should have synergistic action. In circulating cooling water, the compounding coordination function of the corrosion inhibitor and the scale inhibitor is very important, and if a plurality of scale inhibitors are simply compounded together, a new problem can be caused, so that not only is the waste of production data caused, but also the effect of the medicament is easily reduced, and even the medicament is completely ineffective. Therefore, the development of the compound medicament with double effects of scale inhibition and corrosion inhibition has great economic benefit and social benefit. In recent years, with the strictness of environmental regulations established by the nation, higher requirements are put on scale and corrosion inhibitors in circulating water treatment systems, and therefore, the main direction of research in the future is to develop a green polymer scale inhibitor with biodegradability and excellent scale and corrosion inhibition performance.
Disclosure of Invention
The invention aims to provide a scale and corrosion inhibitor and a preparation method thereof, wherein the scale and corrosion inhibitor is used for preventing pipelines and equipment from being corroded, and is particularly suitable for water pipelines and some equipment which generate corrosion in long-term operation. The scale and corrosion inhibitor has double effects of scale inhibition and corrosion inhibition, can slow down the corrosion inhibition efficiency of pipelines and equipment, and is a compound medicament. The scale and corrosion inhibitor has certain biodegradability, and the raw materials adopt polymers with excellent scale and corrosion inhibition performance, so that the scale and corrosion inhibitor is green and environment-friendly. The scale and corrosion inhibitor has wide application range, strong corrosion inhibition effect and good effect on corrosion of pipelines and equipment.
The scale and corrosion inhibitor is prepared from a 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution, a 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution, an acrylic acid/acrylate copolymer (HB-901) aqueous solution, a Polyaspartic Acid (PASP) aqueous solution and a foam discharging agent;
wherein the concentration of the 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution is 30-40 mg/L; the concentration of the 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution is 20-30 mg/L; the concentration of the acrylic acid/acrylate copolymer (HB-901) aqueous solution is 15-20 mg/L; the concentration of the Polyaspartic Acid (PASP) aqueous solution is 20-30 mg/L;
wherein the mass ratio of 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901), Polyaspartic Acid (PASP), foam-drainage agent is (2-3), 2-3, 5-8, 10-15 and 5-8;
the foam discharging agent is prepared from a sodium dodecyl sulfate (K12) aqueous solution, a potassium laurate aqueous solution, a fatty alcohol-polyoxyethylene ether sodium sulfate (AES) aqueous solution, a sodium dodecyl benzene sulfonate (LAS) aqueous solution, a Methyldiethanolamine (MDEA) aqueous solution and a coconut oil fatty acid (CDEA) aqueous solution;
wherein,
the concentration of the sodium dodecyl sulfate (K12) aqueous solution is 8-10 mg/L, the concentration of the potassium laurate aqueous solution is 8-10 mg/L, the concentration of the fatty alcohol polyoxyethylene ether sodium sulfate (AES) aqueous solution is 8-10 mg/L, the concentration of the sodium dodecyl benzene sulfonate (LAS) aqueous solution is 8-10 mg/L, the concentration of the Methyldiethanolamine (MDEA) aqueous solution is 12-15 mg/L, and the concentration of the coconut oil fatty acid (CDEA) aqueous solution is 1.5-2 mg/L.
According to the volume ratio of the aqueous solution, the sodium dodecyl sulfate, the potassium laurate, the sodium fatty alcohol polyoxyethylene ether sulfate, the sodium dodecyl benzene sulfonate, the methyldiethanolamine and the coconut oil fatty acid are (1.5-2): (0.8-1.2).
Wherein, the volume ratio of the aqueous solution is the volume ratio of the aqueous solution prepared from the components.
The foam scrubbing agent is a high-efficiency surfactant, enhances the movement capacity and the permeability of molecules on the basis of maintaining the corrosion inhibition effect, and reduces the potential energy barrier of the metal surface; the foam scrubbing agent can enable the scale and corrosion inhibitor to form bubbles in the pipeline to cover the inner wall of metal of the pipeline or equipment, the scale and corrosion inhibitor is in a liquid phase at normal temperature and normal pressure, and the foam scrubbing agent can promote the liquid scale and corrosion inhibitor to form compact bubbles to cover the surface of the pipeline or equipment, so that the purpose of protecting the metal in the pipeline or equipment is achieved.
The methyldiethanolamine can increase the liquid viscosity and ensure that the foam scrubbing agent is alkaline, and the methyldiethanolamine is a good solvent of fatty alcohol-polyoxyethylene ether sodium sulfate (AES).
The coconut oil fatty acid is a nonionic surfactant and is easy to dissolve in water, after fatty alcohol polyoxyethylene ether sodium sulfate (AES) and Methyldiethanolamine (MDEA) are compounded in equal proportion at room temperature and normal pressure, the coconut oil fatty acid is used as a foam stabilizer to jointly synthesize the foam discharging agent.
The 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901) and Polyaspartic Acid (PASP) were all formulated as aqueous solutions prior to use.
The preparation method of the scale and corrosion inhibitor comprises the following steps:
step 1, preparing a mixed solution
Mixing 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) and 2-hydroxyphosphonoacetic acid (HPAA) according to a ratio, uniformly stirring at 45-55 ℃, adding an acrylic acid/acrylate copolymer (HB-901), and uniformly stirring to obtain a mixed solution;
step 2, preparing the foam scrubbing agent
Mixing sodium dodecyl sulfate (K12), potassium laurate, fatty alcohol-polyoxyethylene ether sodium sulfate (AES) and sodium dodecyl benzene sulfonate (LAS) according to the proportion of the foam-scrubbing agent, and then adding methyldiethanolamine and coconut oil fatty acid to prepare the foam-scrubbing agent;
and 3, adding the mixed solution into a polyaspartic acid aqueous solution, reacting for 50-60 min at 50-60 ℃, then adding the prepared foam discharging agent, fully dissolving, and stirring for 5-6 h at 40-50 ℃ to prepare the scale and corrosion inhibitor.
Wherein,
in the step 1, the mixing process specifically includes:
pouring 2-phosphonobutane-1, 2, 4-tricarboxylic acid into a beaker, adding 2-hydroxyphosphonoacetic acid (HPAA), putting the beaker into a constant-temperature water bath at 45-55 ℃, stirring for 50-60 min to fully mix the solution, adding the solution of acrylic acid/acrylate copolymer (HB-901), and continuously stirring for 50-60 min to prepare a mixed solution.
In the step 3, the magnetic heating stirrer is adopted as the stirring equipment, and the stirring speed is 1500-2000 rpm;
in the step 3, the Polyaspartic Acid (PASP) is synthesized by the following specific steps:
(1) weighing ammonium salt and maleic anhydride (1-1.2) and (0.8-1) according to a molar ratio, and mixing the ammonium salt and the maleic anhydride (C)4H2O3) Respectively grinding into powder, placing into a small beaker, uniformly stirring, and transferring into a three-neck flask;
putting the three-neck flask into an oil bath kettle, reacting for 2-3 h at 140-160 ℃, taking out, and cooling to 65-70 ℃ to obtain a cooled mixture;
(2) pouring the cooled mixture into a beaker, adding distilled water, and uniformly stirring to form a solid state; wherein, according to the amount of the substances, the weight ratio of water to ammonium salt is (4.2-5.5) to (1-1.2);
placing the beaker in a water bath kettle, keeping the temperature of 90 ℃ constant, and evaporating water to obtain a white solid;
placing the beaker filled with the white solid in an oil bath pot, heating at 110-120 ℃ for 1-2 h, and drying to constant weight to obtain polysuccinimide;
(3) putting a beaker in a water bath at 50-90 ℃, adding 30-40 mL of NaOH solution with the concentration of 3-4 mol/L into the polysuccinimide, and hydrolyzing for 1-2 h, wherein when the pH value is 8.5-10, the hydrolysis is complete, so that a dark reddish brown solution, namely a polyaspartic acid sodium salt solution, is obtained;
(4) adding dilute hydrochloric acid into the polyaspartic acid sodium salt solution, wherein the ratio of the polyaspartic acid sodium salt to the dilute hydrochloric acid is 1:1 according to the amount of the substance; adjusting the pH value to be neutral to obtain a polyaspartic acid aqueous solution;
in the step (1), the ammonium salt is one of ammonium carbonate;
in the step (1), a small medicine spoon is adopted for uniformly stirring.
The prepared scale and corrosion inhibitor can be directly added into pipelines and equipment for use.
Compared with the prior art, the scale and corrosion inhibitor has the beneficial effects that:
(1) the scale and corrosion inhibitor has low cost and is easy to prepare;
(2) the scale and corrosion inhibitor has good corrosion resistance effect on pipelines and equipment, and is suitable for pipelines of various pipes;
(3) the scale and corrosion inhibitor is non-toxic, does not cause pollution to the environment, and is a novel green corrosion inhibitor;
(4) the scale and corrosion inhibitor can form bubbles in a pipeline to cover the inner wall of metal, is in a liquid phase at normal temperature and normal pressure, has the capability of spontaneously adsorbing with metal, but cannot realize the metal adsorption effect in a large area due to the action of gravity, so that the use of the scale and corrosion inhibitor is limited. The invention solves the problem by adding the foam scrubbing agent, the foam scrubbing agent is a high-efficiency surfactant, enhances the movement capability and the permeability of molecules on the basis of maintaining the corrosion inhibition effect, reduces the potential energy barrier of the metal surface, promotes the liquid scale and corrosion inhibitor to form compact bubbles to cover the surface of the pipeline or equipment, and achieves the purpose of protecting the metal in the pipeline or the equipment.
(5) The corrosion inhibitor has a wide application range, is suitable for pipelines and equipment under the conditions of high temperature, high hardness, high alkalinity, high pH value and high concentration times, is also suitable for pipelines at low temperature, low hardness, low alkalinity and low pH value, and is difficult to form insoluble organic calcium phosphate. Meanwhile, the corrosion inhibitor has a strong corrosion inhibition effect, and the scale and corrosion inhibitor can achieve a better scale and corrosion inhibition effect by the compound use of the scale and corrosion inhibitor.
Drawings
FIG. 1 is a schematic view of adsorption of scale and corrosion inhibitors on a metal pipe wall;
Detailed Description
The present invention will be described in further detail with reference to examples.
In the present invention, the equipment and raw materials used are commercially available, unless otherwise specified.
In the following examples, the adsorption scheme of the prepared scale and corrosion inhibitor added into the metal pipeline is shown in FIG. 1.
Example 1
A scale and corrosion inhibitor is prepared from 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution, 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution, acrylic acid/acrylate copolymer (HB-901) aqueous solution, Polyaspartic Acid (PASP) aqueous solution and foam scrubbing agent;
wherein, the mass ratio of 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901), Polyaspartic Acid (PASP) and foam-discharging agent is 2: 5: 10: 5;
2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901) and Polyaspartic Acid (PASP) are prepared into aqueous solution before use;
wherein the concentration of the 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution is 30 mg/L; the concentration of the 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution is 20 mg/L; the concentration of the acrylic acid/acrylic ester copolymer (HB-901) aqueous solution was 15 mg/L; the concentration of Polyaspartic Acid (PASP) aqueous solution is 20 mg/L;
the foam discharging agent is prepared from a sodium dodecyl sulfate (K12) aqueous solution, a potassium laurate aqueous solution, a fatty alcohol-polyoxyethylene ether sodium sulfate (AES) aqueous solution, a sodium dodecyl benzene sulfonate (LAS) aqueous solution, a Methyldiethanolamine (MDEA) aqueous solution and a coconut oil fatty acid (CDEA) aqueous solution;
wherein,
the concentration of the sodium dodecyl sulfate (K12) aqueous solution is 10mg/L, the concentration of the potassium laurate aqueous solution is 10mg/L, the concentration of the fatty alcohol polyoxyethylene ether sodium sulfate (AES) aqueous solution is 10mg/L, the concentration of the sodium dodecyl benzene sulfonate (LAS) aqueous solution is 10mg/L, the concentration of the Methyldiethanolamine (MDEA) aqueous solution is 15mg/L, and the concentration of the coconut oil fatty acid (CDEA) aqueous solution is 2 mg/L.
According to the volume ratio of the aqueous solution, the sodium dodecyl sulfate, the potassium laurate, the sodium fatty alcohol polyoxyethylene ether sulfate, the sodium dodecyl benzene sulfonate, the methyldiethanolamine and the coconut oil fatty acid are 2: 1.
Polyaspartic Acid (PASP), the synthesis of which comprises the following steps:
(1) weighing ammonium carbonate and maleic anhydride (1.2: 1) according to a molar ratio, and mixing 0.24mol of ammonium carbonate and 0.2mol of maleic anhydride (C)4H2O3) Respectively grinding into powder, placing into a small beaker, uniformly stirring with a small medicine spoon, and transferring into a three-neck flask;
putting the three-neck flask into an oil bath kettle, reacting for 3 hours at 140 ℃, taking out, and cooling to 70 ℃ to obtain a cooled mixture;
(2) pouring the cooled mixture into a beaker, adding 15mL of distilled water, and uniformly stirring to form a solid state;
placing the beaker in a water bath kettle, keeping the temperature of the beaker constant at 90 ℃, and evaporating water to obtain a white solid;
placing the beaker filled with the white solid in an oil bath pot, heating for 2h at 110 ℃, and drying to constant weight to obtain polysuccinimide;
(3) putting a beaker in a water bath at 90 ℃, adding 30mL of NaOH solution with the concentration of 4mol/L into the polysuccinimide, and hydrolyzing for 1h until the pH value is 9.5, so as to obtain a dark reddish brown solution, namely a polyaspartic acid sodium salt solution;
(4) adding dilute hydrochloric acid in an amount equal to that of the polyaspartic acid sodium salt solution, and adjusting the pH value to be neutral to obtain the polyaspartic acid aqueous solution.
A preparation method of a scale and corrosion inhibitor comprises the following steps:
step 1, preparing a mixed solution
According to the proportion, 2-phosphonobutane-1, 2, 4-tricarboxylic acid is poured into a beaker, then 2-hydroxyphosphonoacetic acid (HPAA) is added, the beaker is placed into a constant temperature water bath at 45 ℃, the solution is stirred for 60min to be fully mixed, then the solution of acrylic acid/acrylate copolymer (HB-901) is added, and the stirring is continued for 60min to prepare a mixed solution.
Step 2, preparing the foam scrubbing agent
Mixing sodium dodecyl sulfate (K12), potassium laurate, fatty alcohol-polyoxyethylene ether sodium sulfate (AES) and sodium dodecyl benzene sulfonate (LAS) according to the proportion of the foam-scrubbing agent, and then adding methyldiethanolamine and coconut oil fatty acid to prepare the foam-scrubbing agent;
and 3, adding the mixed solution into a polyaspartic acid aqueous solution, reacting for 60min at 50 ℃, then adding the prepared foam discharging agent, fully dissolving, heating a stirrer by using magnetic force at 50 ℃, stirring at the speed of 1500 rpm, and stirring for 6h to prepare the scale and corrosion inhibitor.
Example 2
A scale and corrosion inhibitor is prepared from 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution, 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution, acrylic acid/acrylate copolymer (HB-901) aqueous solution, Polyaspartic Acid (PASP) aqueous solution and foam scrubbing agent;
wherein, the mass ratio of 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901), Polyaspartic Acid (PASP) and foam-discharging agent is 3: 8: 15: 8;
2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901) and Polyaspartic Acid (PASP) are prepared into aqueous solution before use;
wherein the concentration of the 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution is 40 mg/L; the concentration of the 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution is 30 mg/L; the concentration of the acrylic acid/acrylic ester copolymer (HB-901) aqueous solution was 20 mg/L; the concentration of Polyaspartic Acid (PASP) aqueous solution is 30 mg/L;
the foam discharging agent is prepared from a sodium dodecyl sulfate (K12) aqueous solution, a potassium laurate aqueous solution, a fatty alcohol-polyoxyethylene ether sodium sulfate (AES) aqueous solution, a sodium dodecyl benzene sulfonate (LAS) aqueous solution, a Methyldiethanolamine (MDEA) aqueous solution and a coconut oil fatty acid (CDEA) aqueous solution;
wherein,
the concentration of the sodium dodecyl sulfate (K12) aqueous solution is 8mg/L, the concentration of the potassium laurate aqueous solution is 8mg/L, the concentration of the fatty alcohol polyoxyethylene ether sodium sulfate (AES) aqueous solution is 8mg/L, the concentration of the sodium dodecyl benzene sulfonate (LAS) aqueous solution is 8mg/L, the concentration of the Methyldiethanolamine (MDEA) aqueous solution is 12mg/L, and the concentration of the coconut oil fatty acid (CDEA) aqueous solution is 1.5 mg/L.
According to the volume ratio of the aqueous solution, the sodium dodecyl sulfate, the potassium laurate, the sodium fatty alcohol polyoxyethylene ether sulfate, the sodium dodecyl benzene sulfonate, the methyldiethanolamine and the coconut oil fatty acid are 1.5: 0.8.
Polyaspartic Acid (PASP), the synthesis of which comprises the following steps:
(1) weighing ammonium carbonate and maleic anhydride (1.2: 1) according to a molar ratio, and mixing 0.24mol of ammonium carbonate and 0.2mol of maleic anhydride (C)4H2O3) Respectively grinding into powder, placing into a small beaker, uniformly stirring with a small medicine spoon, and transferring into a three-neck flask;
putting the three-neck flask into an oil bath kettle, reacting for 2 hours at 160 ℃, taking out, and cooling to 65 ℃ to obtain a cooled mixture;
(2) pouring the cooled mixture into a beaker, adding 20mL of distilled water, and uniformly stirring to form a solid state;
placing the beaker in a water bath kettle, keeping the temperature of the beaker constant at 90 ℃, and evaporating water to obtain a white solid;
placing the beaker filled with the white solid in an oil bath pot, heating at 120 ℃ for 1h, and drying to constant weight to obtain polysuccinimide;
(3) putting a beaker in a water bath at 50 ℃, adding 40mL of NaOH solution with the concentration of 3mol/L into the polysuccinimide, and hydrolyzing for 2h, wherein when the pH value is 8.5, the hydrolysis is complete, so that a dark reddish brown solution is obtained, namely the polyaspartic acid sodium salt solution;
(4) adding dilute hydrochloric acid in an amount equal to that of the polyaspartic acid sodium salt solution, and adjusting the pH value to be neutral to obtain the polyaspartic acid aqueous solution.
A preparation method of a scale and corrosion inhibitor comprises the following steps:
step 1, preparing a mixed solution
According to the proportion, 2-phosphonobutane-1, 2, 4-tricarboxylic acid is poured into a beaker, then 2-hydroxyphosphonoacetic acid (HPAA) is added, the beaker is placed into a thermostatic water bath at 55 ℃, the solution is stirred for 50min to be fully mixed, then the solution of acrylic acid/acrylate copolymer (HB-901) is added, and the stirring is continued for 50min to prepare a mixed solution.
Step 2, preparing the foam scrubbing agent
Mixing sodium dodecyl sulfate (K12), potassium laurate, fatty alcohol-polyoxyethylene ether sodium sulfate (AES) and sodium dodecyl benzene sulfonate (LAS) according to the proportion of the foam-scrubbing agent, and then adding methyldiethanolamine and coconut oil fatty acid to prepare the foam-scrubbing agent;
and 3, adding the mixed solution into a polyaspartic acid aqueous solution, reacting for 50min at 60 ℃, then adding the prepared foam discharging agent, fully dissolving, heating a stirrer by using magnetic force at 40 ℃, stirring at the speed of 2000 rpm, and stirring for 6h to prepare the scale and corrosion inhibitor.
Example 3
A scale and corrosion inhibitor is prepared from 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution, 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution, acrylic acid/acrylate copolymer (HB-901) aqueous solution, Polyaspartic Acid (PASP) aqueous solution and foam scrubbing agent;
wherein, the mass ratio of 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901), Polyaspartic Acid (PASP) and foam-discharging agent is 2: 3: 8: 12: 8;
the 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA), 2-hydroxyphosphonoacetic acid (HPAA), acrylic acid/acrylate copolymer (HB-901) and Polyaspartic Acid (PASP) are prepared into aqueous solution before use;
wherein the concentration of the 2-phosphonobutane-1, 2, 4-tricarboxylic acid (PBTCA) aqueous solution is 30 mg/L; the concentration of the 2-hydroxyphosphonoacetic acid (HPAA) aqueous solution is 20 mg/L; the concentration of the acrylic acid/acrylic ester copolymer (HB-901) aqueous solution was 15 mg/L; the concentration of Polyaspartic Acid (PASP) aqueous solution is 30 mg/L;
the foam discharging agent is prepared from a sodium dodecyl sulfate (K12) aqueous solution, a potassium laurate aqueous solution, a fatty alcohol-polyoxyethylene ether sodium sulfate (AES) aqueous solution, a sodium dodecyl benzene sulfonate (LAS) aqueous solution, a Methyldiethanolamine (MDEA) aqueous solution and a coconut oil fatty acid (CDEA) aqueous solution;
wherein,
the concentration of the sodium dodecyl sulfate (K12) aqueous solution is 10mg/L, the concentration of the potassium laurate aqueous solution is 10mg/L, the concentration of the fatty alcohol polyoxyethylene ether sodium sulfate (AES) aqueous solution is 10mg/L, the concentration of the sodium dodecyl benzene sulfonate (LAS) aqueous solution is 10mg/L, the concentration of the Methyldiethanolamine (MDEA) aqueous solution is 15mg/L, and the concentration of the coconut oil fatty acid (CDEA) aqueous solution is 2 mg/L.
According to the volume ratio of the aqueous solution, the sodium dodecyl sulfate, the potassium laurate, the sodium fatty alcohol polyoxyethylene ether sulfate, the sodium dodecyl benzene sulfonate, the methyldiethanolamine and the coconut oil fatty acid are 2: 1.2.
Polyaspartic Acid (PASP), the synthesis of which comprises the following steps:
(1) weighing ammonium carbonate and maleic anhydride (1: 0.8) according to a molar ratio, and mixing 0.2mol of ammonium carbonate and 0.16mol of maleic anhydride (C)4H2O3) Respectively grinding into powder, placing into a small beaker, uniformly stirring with a small medicine spoon, and transferring into a three-neck flask;
putting the three-neck flask into an oil bath kettle, reacting for 2 hours at 150 ℃, taking out, and cooling to 70 ℃ to obtain a cooled mixture;
(2) pouring the cooled mixture into a beaker, adding 15mL of distilled water, and uniformly stirring to form a solid state;
placing the beaker in a water bath kettle, keeping the temperature of the beaker constant at 90 ℃, and evaporating water to obtain a white solid;
placing the beaker filled with the white solid in an oil bath pot, heating for 2h at 110 ℃, and drying to constant weight to obtain polysuccinimide;
(3) putting a beaker in a water bath at 90 ℃, adding 40mL of NaOH solution with the concentration of 3mol/L into the polysuccinimide, and hydrolyzing for 2h, wherein when the pH value is 10, the hydrolysis is complete to obtain a dark reddish brown solution, namely a polyaspartic acid sodium salt solution;
(4) adding dilute hydrochloric acid in an amount equal to that of the polyaspartic acid sodium salt solution, and adjusting the pH value to be neutral to obtain the polyaspartic acid aqueous solution.
A preparation method of a scale and corrosion inhibitor comprises the following steps:
step 1, preparing a mixed solution
According to the proportion, 2-phosphonobutane-1, 2, 4-tricarboxylic acid is poured into a beaker, then 2-hydroxyphosphonoacetic acid (HPAA) is added, the beaker is placed into a thermostatic water bath at 50 ℃, the solution is stirred for 55min to be fully mixed, then the solution of acrylic acid/acrylate copolymer (HB-901) is added, and the stirring is continued for 60min to prepare a mixed solution.
Step 2, preparing the foam scrubbing agent
Mixing sodium dodecyl sulfate (K12), potassium laurate, fatty alcohol-polyoxyethylene ether sodium sulfate (AES) and sodium dodecyl benzene sulfonate (LAS) according to the proportion of the foam-scrubbing agent, and then adding methyldiethanolamine and coconut oil fatty acid to prepare the foam-scrubbing agent;
and 3, adding the mixed solution into a polyaspartic acid aqueous solution, reacting for 60min at 50 ℃, then adding the prepared foam discharging agent, fully dissolving, heating a stirrer by using magnetic force at 50 ℃, stirring at the speed of 2000 rpm, and stirring for 6h to prepare the scale and corrosion inhibitor.
Claims (6)
1. The scale and corrosion inhibitor is characterized by being prepared from a 2-phosphonobutane-1, 2, 4-tricarboxylic acid aqueous solution, a 2-hydroxyphosphonoacetic acid aqueous solution, an acrylic acid/acrylate copolymer aqueous solution with the model of HB-901, a polyaspartic acid aqueous solution and a foam scrubbing agent;
the concentration of the 2-phosphonobutane-1, 2, 4-tricarboxylic acid aqueous solution is 30-40 mg/L; the concentration of the 2-hydroxyphosphonoacetic acid aqueous solution is 20-30 mg/L; the concentration of the acrylic acid/acrylate copolymer aqueous solution with the model number of HB-901 is 15-20 mg/L; the concentration of the polyaspartic acid aqueous solution is 20-30 mg/L;
wherein, according to the amount ratio of the substances, the ratio of 2-phosphonobutane-1, 2, 4-tricarboxylic acid: 2-hydroxyphosphonoacetic acid: acrylic acid/acrylate copolymer type HB-901: polyaspartic acid: foam discharging agent = (2-3): (2-3): (5-8): (10-15): (5-8);
the foam discharging agent is prepared from a sodium dodecyl sulfate aqueous solution, a potassium laurate aqueous solution, a fatty alcohol-polyoxyethylene ether sodium sulfate aqueous solution, a sodium dodecyl benzene sulfonate aqueous solution, a methyldiethanolamine aqueous solution and a coconut oil fatty acid aqueous solution;
the concentration of the sodium dodecyl sulfate aqueous solution is 8-10 mg/L, the concentration of the potassium laurate aqueous solution is 8-10 mg/L, the concentration of the fatty alcohol-polyoxyethylene ether sodium sulfate aqueous solution is 8-10 mg/L, the concentration of the sodium dodecyl benzene sulfonate aqueous solution is 8-10 mg/L, the concentration of the methyldiethanolamine aqueous solution is 12-15 mg/L, and the concentration of the coconut oil fatty acid aqueous solution is 1.5-2 mg/L;
sodium dodecyl sulfate: potassium laurate: sodium fatty alcohol polyoxyethylene ether sulfate: sodium dodecylbenzenesulfonate: methyldiethanolamine: coconut oil fatty acid = (1.5-2): 0.8-1.2.
2. The preparation method of the scale and corrosion inhibitor of claim 1 is characterized by comprising the following steps:
step 1, preparing a mixed solution
Mixing 2-phosphonobutane-1, 2, 4-tricarboxylic acid and 2-hydroxyphosphonoacetic acid according to a ratio, uniformly stirring at 45-55 ℃, adding an acrylic acid/acrylate copolymer with the model of HB-901, mixing, and uniformly stirring to obtain a mixed solution;
step 2, preparing the foam scrubbing agent
Mixing sodium dodecyl sulfate, potassium laurate, fatty alcohol-polyoxyethylene ether sodium sulfate and sodium dodecyl benzene sulfonate according to the proportion of the foam-scrubbing agent, and then adding methyldiethanolamine and coconut oil fatty acid to prepare the foam-scrubbing agent;
and 3, adding the mixed solution into a polyaspartic acid aqueous solution, reacting for 50-60 min at 50-60 ℃, then adding the prepared foam discharging agent, fully dissolving, and stirring for 5-6 h at 40-50 ℃ to prepare the scale and corrosion inhibitor.
3. The preparation method of the scale and corrosion inhibitor as claimed in claim 2, wherein in the step 1, the mixing process comprises the steps of firstly pouring 2-phosphonobutane-1, 2, 4-tricarboxylic acid into a beaker, then adding 2-hydroxyphosphonoacetic acid, putting the beaker into a constant temperature water bath at 45-55 ℃, stirring for 50-60 min to fully mix the solution, then adding an acrylic acid/acrylate copolymer solution with the model of HB-901, and continuously stirring for 50-60 min to prepare a mixed solution.
4. The preparation method of the scale and corrosion inhibitor according to claim 2, wherein in the step 3, the stirring equipment is a magnetic heating stirrer, and the stirring speed is 1500-2000 rpm.
5. The method for preparing the scale and corrosion inhibitor according to claim 2, wherein in the step 3, the polyaspartic acid is synthesized by the following specific steps:
(1) molar ratio, ammonium salt: maleic anhydride = (1-1.2): (0.8-1) weighing materials, respectively grinding ammonium salt and maleic anhydride into powder, putting the powder into a small beaker, uniformly stirring, and then transferring the powder into a three-neck flask;
putting the three-neck flask into an oil bath kettle, reacting for 2-3 h at 140-160 ℃, taking out, and cooling to 65-70 ℃ to obtain a cooled mixture;
(2) pouring the cooled mixture into a beaker, adding distilled water, and uniformly stirring to form a solid state; wherein, according to the amount of the substance, the ratio of water: ammonium salt = (4.2 to 5.5): (1-1.2);
placing the beaker in a water bath kettle, keeping the temperature of 90 ℃ constant, and evaporating water to obtain a white solid;
placing the beaker filled with the white solid in an oil bath pot, heating at 110-120 ℃ for 1-2 h, and drying to constant weight to obtain polysuccinimide;
(3) putting a beaker in a water bath at 50-90 ℃, adding 30-40 mL of NaOH solution with the concentration of 3-4 mol/L into the polysuccinimide, and hydrolyzing for 1-2 h, wherein when the pH value is 8.5-10, the hydrolysis is complete, so that a dark reddish brown solution, namely a polyaspartic acid sodium salt solution, is obtained;
(4) adding dilute hydrochloric acid into the polyaspartic acid sodium salt solution, wherein the mass ratio of polyaspartic acid sodium salt: and (3) dilute hydrochloric acid =1:1, and adjusting the pH value to be neutral to obtain the polyaspartic acid aqueous solution.
6. The method for preparing the scale and corrosion inhibitor according to claim 5, wherein in the step (1), the ammonium salt is one of ammonium carbonate.
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| CN100509653C (en) * | 2004-08-31 | 2009-07-08 | 中国石化北京燕化石油化工股份有限公司 | Low-phosphorus antiincrustation corrosion inhibitor and use thereof |
| CN102730866A (en) * | 2011-04-02 | 2012-10-17 | 中国石油化工股份有限公司 | Treatment method of circulating water with leaking wax oil |
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