CN116550152B - Low-content high-efficiency reverse osmosis membrane scale inhibitor and preparation process thereof - Google Patents
Low-content high-efficiency reverse osmosis membrane scale inhibitor and preparation process thereof Download PDFInfo
- Publication number
- CN116550152B CN116550152B CN202310557236.4A CN202310557236A CN116550152B CN 116550152 B CN116550152 B CN 116550152B CN 202310557236 A CN202310557236 A CN 202310557236A CN 116550152 B CN116550152 B CN 116550152B
- Authority
- CN
- China
- Prior art keywords
- parts
- reverse osmosis
- osmosis membrane
- scale inhibitor
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 55
- 239000012528 membrane Substances 0.000 title claims abstract description 54
- 239000002455 scale inhibitor Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229920000642 polymer Polymers 0.000 claims abstract description 25
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 claims abstract description 22
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 22
- 229940050410 gluconate Drugs 0.000 claims abstract description 22
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 20
- 239000003899 bactericide agent Substances 0.000 claims abstract description 20
- 239000001361 adipic acid Substances 0.000 claims abstract description 17
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 17
- 229920001577 copolymer Polymers 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- MLQBZPKXXHILCJ-UHFFFAOYSA-N 2,2-dibromo-3-cyanopropanamide Chemical group NC(=O)C(Br)(Br)CC#N MLQBZPKXXHILCJ-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- HLCFGWHYROZGBI-JJKGCWMISA-M Potassium gluconate Chemical group [K+].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O HLCFGWHYROZGBI-JJKGCWMISA-M 0.000 claims description 3
- 229920005550 ammonium lignosulfonate Polymers 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000004224 potassium gluconate Substances 0.000 claims description 3
- 235000013926 potassium gluconate Nutrition 0.000 claims description 3
- 229960003189 potassium gluconate Drugs 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 229920000141 poly(maleic anhydride) Polymers 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 230000005764 inhibitory process Effects 0.000 abstract description 18
- 239000011574 phosphorus Substances 0.000 abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract description 6
- 229910019142 PO4 Inorganic materials 0.000 abstract description 4
- 239000010452 phosphate Substances 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910001424 calcium ion Inorganic materials 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000011109 contamination Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229960005069 calcium Drugs 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical group NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 2
- 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 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OCUCCJIRFHNWBP-IYEMJOQQSA-L Copper gluconate Chemical compound [Cu+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O OCUCCJIRFHNWBP-IYEMJOQQSA-L 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 229920000805 Polyaspartic acid Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- WHMDKBIGKVEYHS-IYEMJOQQSA-L Zinc gluconate Chemical compound [Zn+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O WHMDKBIGKVEYHS-IYEMJOQQSA-L 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004227 calcium gluconate Substances 0.000 description 1
- 235000013927 calcium gluconate Nutrition 0.000 description 1
- 229960004494 calcium gluconate Drugs 0.000 description 1
- NEEHYRZPVYRGPP-UHFFFAOYSA-L calcium;2,3,4,5,6-pentahydroxyhexanoate Chemical compound [Ca+2].OCC(O)C(O)C(O)C(O)C([O-])=O.OCC(O)C(O)C(O)C(O)C([O-])=O NEEHYRZPVYRGPP-UHFFFAOYSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229940108925 copper gluconate Drugs 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000001755 magnesium gluconate Substances 0.000 description 1
- 235000015778 magnesium gluconate Nutrition 0.000 description 1
- 229960003035 magnesium gluconate Drugs 0.000 description 1
- 229940091250 magnesium supplement Drugs 0.000 description 1
- IAKLPCRFBAZVRW-XRDLMGPZSA-L magnesium;(2r,3s,4r,5r)-2,3,4,5,6-pentahydroxyhexanoate;hydrate Chemical compound O.[Mg+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O IAKLPCRFBAZVRW-XRDLMGPZSA-L 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000009285 membrane fouling Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008194 pharmaceutical composition Substances 0.000 description 1
- -1 phosphorus organic compound Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 108010064470 polyaspartate Proteins 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229960003975 potassium Drugs 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 229920005552 sodium lignosulfonate Polymers 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000011670 zinc gluconate Substances 0.000 description 1
- 235000011478 zinc gluconate Nutrition 0.000 description 1
- 229960000306 zinc gluconate Drugs 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a low-content high-efficiency reverse osmosis membrane scale inhibitor and a preparation process thereof, and relates to the technical field of water treatment medicaments. Wherein, the low-content high-efficiency reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 30-45 parts of organic carboxylic acid polymer, 30-35 parts of polyepoxysuccinate, 17-18 parts of adipic acid/diethylenetriamine copolymer, 9-15 parts of gluconate, 13-20 parts of lignosulfonate, 2-8 parts of bactericide and 70-80 parts of water. The raw material system does not contain phosphorus, avoids the use of phosphorus-containing compounds, avoids phosphate precipitation, avoids secondary pollution, has high scale inhibition efficiency, small dosage, is environment-friendly, has stable property and long storage period. The low-content high-efficiency reverse osmosis scale inhibitor can prevent scale on the membrane surface, prevent the reverse osmosis membrane from being blocked, prolong the service life of the reverse osmosis membrane and improve the water yield.
Description
Technical Field
The invention relates to the technical field of water treatment medicaments, in particular to a low-content high-efficiency reverse osmosis membrane scale inhibitor and a preparation process thereof.
Background
In recent years, reverse osmosis technology and ion exchange methods have been widely used in water treatment. Reverse osmosis technology is to separate water from ions in water by using a reverse osmosis membrane, so as to achieve the purpose of purifying water. The reverse osmosis technology is a membrane separation technology developed after the 60 s of the 20 th century, and compared with the traditional ion exchange desalination technology, the reverse osmosis technology has the advantages of no phase change, componentization, simple flow, convenient operation, small occupied area, low investment, low power consumption and the like, so that the reverse osmosis technology is widely applied to industries such as purified water treatment, water in the pharmaceutical industry, sea water desalination, cooling tower makeup water, boiler makeup water and the like. In the practical application of reverse osmosis technology, membrane fouling problems are a determining factor affecting the reliability of the technology. In the membrane filtration process, particles, colloid particles or solute macromolecules in water are adsorbed and deposited on the surface or in the membrane holes due to the physical and chemical actions or mechanical actions of the pre-membrane, so that the pore diameter of the membrane is reduced or blocked, and the performance of the membrane is reduced. Particularly, when the reverse osmosis system continuously runs for a long time, calcium and magnesium plasma in water can be continuously separated out and attached to the surface of the reverse osmosis membrane to form scale to block membrane holes, so that the water outlet efficiency of the reverse osmosis system can be affected, the reverse osmosis membrane can be damaged when serious, and membrane elements are required to be replaced. Reverse osmosis membranes are a critical component of reverse osmosis systems and are expensive. Therefore, the prevention of membrane scaling plays an important role in reverse osmosis operation, and generally, in system operation, a reverse osmosis membrane scale inhibitor is added into water to delay the scaling of a membrane surface.
The contamination of reverse osmosis membranes can be broadly classified into 4 categories, suspended particle and colloid contamination, inorganic sediment contamination, organic contamination and biological contamination. When insoluble salt is concentrated continuously in the reverse osmosis system and the product of the concentration power of the component ions exceeds the solubility product, the insoluble salt is deposited continuously on the surface of the reverse osmosis membrane to form scale, so that inorganic sediment pollution is formed. When the water source is brackish water, caSO 4 、CaCO 3 、SiO 2 Is the main indissolvable salt for generating scale.
The main components of the reverse osmosis membrane scale inhibitor used in the current industrial water treatment application comprise phosphonic acid, natural dispersing agent (mainly high molecular polymer used in the current market), phosphonic carboxylic acid, phosphonic sulfonic acid, high molecular polymer and the like. The traditional organic phosphine scale inhibitor contains phosphorus, which not only has adverse effect on the environment, but also is easy to hydrolyze to generate orthophosphate, and precipitates with calcium ions to generate secondary scaling.
Disclosure of Invention
In order to solve the problems that the traditional organic phosphine scale inhibitor contains phosphorus, which is mentioned in the background art, not only can cause adverse effect on the environment, but also is easy to hydrolyze to generate orthophosphate and precipitate with calcium ions to generate secondary scaling phenomenon, the invention provides the low-content high-efficiency reverse osmosis membrane scale inhibitor, which is free of phosphorus in a raw material system, avoids the use of phosphorus-containing compounds, avoids phosphate precipitation, avoids secondary pollution, has high scale inhibition efficiency, small dosage, is environment-friendly, has stable property and long storage period.
The specific scheme is as follows:
the low-content high-efficiency reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 30-45 parts of organic carboxylic acid polymer, 30-35 parts of polyepoxysuccinate, 17-18 parts of adipic acid/diethylenetriamine copolymer, 9-15 parts of gluconate, 13-20 parts of lignosulfonate, 2-8 parts of bactericide and 70-80 parts of water; the adipic acid/diethylenetriamine copolymer has a molecular weight of 1000-2000.
In carrying out the above embodiment, preferably, the organic carboxylic acid polymer is selected from one or more of polyacrylic acid, polymaleic anhydride, polyaspartic acid.
In carrying out the above embodiment, preferably, the polyepoxysuccinate is one or both of sodium polyepoxysuccinate and potassium polyepoxysuccinate.
In practicing the above embodiments, preferably, the gluconate is selected from one or more of potassium gluconate, sodium gluconate, zinc gluconate, calcium gluconate, copper gluconate, and magnesium gluconate.
In carrying out the above embodiments, preferably, the lignosulfonate is selected from one or more of sodium lignosulfonate or ammonium lignosulfonate.
In practicing the above embodiment, preferably, the bactericide is 2, 2-dibromo-3-cyanopropionamide.
In carrying out the above embodiment, preferably, the water is deionized water.
On the other hand, the preparation process of the low-content high-efficiency reverse osmosis membrane scale inhibitor comprises the following steps of:
firstly, putting an organic carboxylic acid polymer, polyepoxysuccinate, gluconate, lignosulfonate and half of water in a reaction container according to a proportion, heating and stirring uniformly for later use;
step two, mixing adipic acid/diethylenetriamine copolymer with the other half of water, and uniformly stirring;
step three, heating the material obtained in the step one and dropwise adding the mixed solution obtained in the step two, and controlling the flow rate to ensure that the mixed solution is completely dripped at the same time;
fourthly, adding a bactericide to the material obtained in the third step, and preserving heat for a certain time;
and fifthly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
In carrying out the above embodiment, the stirring temperature in the first step is preferably 40 to 50 ℃.
In the implementation of the above embodiment, preferably, in the third step, the temperature is raised to 70-75 ℃, and the dripping time is controlled to be 5-6 hours; and fourthly, the heat preservation time is 3-4 hours.
Organic carboxylic acid polymers are often used as main active ingredients in scale inhibitors, have dispersing and scale inhibiting effects, can disperse insoluble salt particles which can become insoluble salt crystallization centers, can reduce or control aggregation of insoluble salt into scale, can enable deposited crystals to generate lattice distortion, can achieve the purpose of scale inhibition, and are used for preventing calcium carbonate, sulfate, phosphate scale and the like. While preventing the formation of positive colloidal deposits such as metal oxides.
The polyepoxysuccinate is a nitrogen-free and non-phosphorus organic compound, has double effects of scale and corrosion inhibition, has good biodegradability, is suitable for water systems with high alkali and high metal content, and is a green water treatment chemical. The main scale inhibition mechanism comprises: 1) Part of active groups in the chelating scale inhibitor have certain chelating force on scale forming cations, and the chelating effect is generated, so that part of scale forming cations can be blocked, and the reaction of the scale forming cations and anions in a water body can be inhibited, thereby preventing scaling. 2) The low dose effect refers to the addition of agents that have a much lower cation concentration relative to the scale forming components in the water, i.e., inhibit substantial scale formation. The crystallization of the ions shows the scale inhibition effect. 3) Lattice distortion effect when a crystal is grown, the crystal lattice is grown first at kink sites of the crystal, and the kink sites are the most stable sites on the crystal interface.
Compared with the prior art, the invention has the beneficial characteristics that:
1. the low-content high-efficiency reverse osmosis membrane scale inhibitor disclosed by the invention has the advantages that the raw material system does not contain phosphorus, the use of phosphorus-containing compounds is avoided, phosphate precipitation is avoided, secondary pollution is avoided, the scale inhibition efficiency is high, the adding amount is small, the environment is protected, the property is stable, and the storage period is long.
2. The low-content high-efficiency reverse osmosis membrane scale inhibitor has the advantages that the polyepoxysuccinate is added in a raw material system, the silicon scale deposition in water is not obviously inhibited, but the silicon inhibition effect can be improved when the polyepoxysuccinate is matched with adipic acid/diethylenetriamine copolymer for use, and the polyepoxysuccinate have obvious synergistic silicon inhibition effect.
3. The low-content high-efficiency reverse osmosis membrane scale inhibitor disclosed by the invention has the advantages that the gluconate and the lignosulfonate are added in a raw material system, and have a certain synergistic effect on corrosion inhibition by matching, meanwhile, the dosage of the agent is reduced, the corrosion inhibition performance can be greatly improved, and the gluconate still has higher corrosion inhibition efficiency under higher temperature conditions.
4. The low-content high-efficiency reverse osmosis membrane scale inhibitor disclosed by the invention has the advantages that the raw material system contains amino, sulfonic acid, ether, hydroxyl and carboxyl functional groups, and the synergistic effect between the amino, sulfonic acid, ether, hydroxyl and carboxyl functional groups is utilized, so that the low-content high-efficiency reverse osmosis membrane scale inhibitor has excellent corrosion inhibition, scale inhibition and dispersion properties.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Some of the agents used in the examples and comparative examples of the present invention are described below:
organic carboxylic acid polymer: the polymer is a polymer of maleic anhydride,
polyepoxysuccinate: the sodium polyepoxysuccinate is used in the preparation of a pharmaceutical composition,
gluconate: the potassium gluconate is used for preparing the medicine,
lignosulfonate: ammonium lignosulfonate and a salt of a lignin sulfonate,
a bactericide: 2, 2-dibromo-3-cyanopropionamide
Water: deionized water.
Example 1
The low-content high-efficiency reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 30 parts of organic carboxylic acid polymer, 30 parts of polyepoxysuccinate, 18 parts of adipic acid/diethylenetriamine copolymer, 15 parts of gluconate, 20 parts of lignosulfonate, 8 parts of bactericide and 80 parts of water.
The preparation process comprises the following steps:
firstly, putting an organic carboxylic acid polymer, polyepoxysuccinate, gluconate, lignosulfonate and half of water in a reaction container according to a proportion, heating to 40 ℃, and uniformly stirring for later use;
step two, mixing adipic acid/diethylenetriamine copolymer with the other half of water, and uniformly stirring;
step three, heating the material obtained in the step one to 70 ℃, dropwise adding the mixed solution obtained in the step two, controlling the flow rate, and controlling the dropwise adding time to be 5 hours, so that the mixed solution is completely dripped at the same time;
fourthly, adding a bactericide to the material obtained in the third step, and preserving heat for 3 hours;
and fifthly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
Example 2
The low-content high-efficiency reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 45 parts of organic carboxylic acid polymer, 35 parts of polyepoxysuccinate, 17 parts of adipic acid/diethylenetriamine copolymer, 9 parts of gluconate, 13 parts of lignosulfonate, 8 parts of bactericide and 80 parts of water.
The preparation process comprises the following steps:
firstly, putting an organic carboxylic acid polymer, polyepoxysuccinate, gluconate, lignosulfonate and half of water in a reaction container according to a proportion, heating to 50 ℃, and uniformly stirring for later use;
step two, mixing adipic acid/diethylenetriamine copolymer with the other half of water, and uniformly stirring;
step three, heating the material obtained in the step one to 75 ℃, dropwise adding the mixed solution obtained in the step two, controlling the flow rate, and controlling the dropwise adding time to be 6 hours, so that the mixed solution is completely dripped at the same time;
fourthly, adding a bactericide to the material obtained in the third step, and preserving heat for 4 hours;
and fifthly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
Example 3
The low-content high-efficiency reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 45 parts of organic carboxylic acid polymer, 35 parts of polyepoxysuccinate, 18 parts of adipic acid/diethylenetriamine copolymer, 15 parts of gluconate, 20 parts of lignosulfonate, 2 parts of bactericide and 70 parts of water.
The preparation process comprises the following steps:
firstly, putting an organic carboxylic acid polymer, polyepoxysuccinate, gluconate, lignosulfonate and half of water in a reaction container according to a proportion, heating to 40 ℃, and uniformly stirring for later use;
step two, mixing adipic acid/diethylenetriamine copolymer with the other half of water, and uniformly stirring;
step three, heating the material obtained in the step one to 75 ℃, dropwise adding the mixed solution obtained in the step two, controlling the flow rate, and controlling the dropwise adding time to be 5 hours, so that the mixed solution is completely dripped at the same time;
fourthly, adding a bactericide to the material obtained in the third step, and preserving heat for 4 hours;
and fifthly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
Comparative example 1
Brand scale inhibitors are known abroad.
Comparative example 2
The reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 30 parts of organic carboxylic acid polymer, 18 parts of adipic acid/diethylenetriamine copolymer, 15 parts of gluconate, 20 parts of lignosulfonate, 8 parts of bactericide and 80 parts of water.
The preparation process comprises the following steps:
firstly, putting an organic carboxylic acid polymer, gluconate, lignin sulfonate and half of water into a reaction container according to a proportion, heating to 40 ℃, and uniformly stirring for later use;
step two, mixing adipic acid/diethylenetriamine copolymer with the other half of water, and uniformly stirring;
step three, heating the material obtained in the step one to 70 ℃, dropwise adding the mixed solution obtained in the step two, controlling the flow rate, and controlling the dropwise adding time to be 5 hours, so that the mixed solution is completely dripped at the same time;
fourthly, adding a bactericide to the material obtained in the third step, and preserving heat for 3 hours;
and fifthly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
Comparative example 3
The reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 30 parts of organic carboxylic acid polymer, 30 parts of polyepoxysuccinate, 15 parts of gluconate, 20 parts of lignosulfonate, 8 parts of bactericide and 80 parts of water.
The preparation process comprises the following steps:
firstly, putting an organic carboxylic acid polymer, polyepoxysuccinate, gluconate, lignosulfonate and half of water in a reaction container according to a proportion, heating to 40 ℃, and uniformly stirring for later use;
step two, adding a bactericide into the material obtained in the step one, and preserving heat for 3 hours;
and thirdly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
Comparative example 4
The reverse osmosis membrane scale inhibitor comprises the following raw materials in parts by mass: 30 parts of organic carboxylic acid polymer, 15 parts of gluconate, 20 parts of lignosulfonate, 8 parts of bactericide and 80 parts of water.
The preparation process comprises the following steps:
firstly, putting an organic carboxylic acid polymer, gluconate, lignin sulfonate and half of water into a reaction container according to a proportion, heating to 40 ℃, and uniformly stirring for later use;
step two, adding a bactericide into the material obtained in the step one, and preserving heat for 3 hours;
and thirdly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
Scale inhibition test for examples 1-3 and comparative examples 1-3:
the static colloidal silica scale test method comprises the steps of preparing 500mg/L sodium silicate solution (calculated by silicon dioxide), adding a scale inhibitor, adjusting the pH of the solution to 7.0+/-0.1 by using HCl and NaOH solutions, placing a plastic bottle containing the solution into a constant-temperature water bath kettle at 40 ℃, taking a certain volume of sample at regular time, filtering by using a 0.45 mu m filter membrane, diluting by a certain multiple, measuring the content of soluble silicon dioxide in the solution, and simultaneously performing a blank experiment, wherein all the experiments are repeated twice. The determination of soluble silicon in the solution adopts GBT12149-2007 industrial circulating cooling water and determination of silicon in boiler water, and spectrophotometry.
The static scale inhibiting method of calcium carbonate includes adding certain amount of calcium chloride solution into 500m L glass volumetric flasks with different numbers to reach final calcium ion content of 720mg/L, adding scale inhibitor, regulating pH to 8.9 with sodium tetraborate, adding certain amount of sodium bicarbonate solution to reach final bicarbonate radical content of 1098mg/L, maintaining at constant temperature of 80 deg.c for 10 hr, cooling and filtering to obtain calcium ion content.
The calculation formula of the scale inhibition rate beta is that beta= [ (V-V0)/(V1-V0) ]. 100%,
wherein V is the volume of EDTA consumed by the scale inhibitor and mL; v0 is the volume of EDTA consumed in the blank test, mL; v1 is the volume of EDTA total calcium consumed, mL.
The static scale inhibiting method of calcium sulfate includes adding certain amount of calcium chloride solution into 500mL glass volumetric flasks with different numbers to make the final calcium ion content 1920mg/L, adding scale inhibitor, regulating pH to 8.9 with sodium tetraborate, adding certain amount of sodium sulfate solution to make the final sulfate radical content 4608mg/L, maintaining at constant temperature of 60 deg.c for 6 hr, cooling and filtering to measure the calcium ion content. The calculation formula of the scale inhibition rate is the same as that of the above.
The test results were as follows:
as can be seen from the above table, example 1 designed two experimental groups of different addition amounts, one group was identical to the commercial scale inhibitors, and each scale inhibitor was superior to the commercial scale inhibitors. The other group of the additives is reduced, and the better scale inhibition effect can be maintained. Thus, the scale inhibitor of the invention can be used for wastewater treatment to reduce the addition amount.
Comparative examples 2-4 demonstrate that the present invention improves the silicon resistance by the synergistic effect of polyepoxysuccinate and adipic acid/diethylenetriamine copolymer.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. The low-content high-efficiency reverse osmosis membrane scale inhibitor is characterized by comprising the following raw material components in parts by mass: 30-45 parts of organic carboxylic acid polymer, 30-35 parts of polyepoxysuccinate, 17-18 parts of adipic acid/diethylenetriamine copolymer, 9-15 parts of gluconate, 13-20 parts of lignosulfonate, 2-8 parts of bactericide and 70-80 parts of water; the molecular weight of the adipic acid/diethylenetriamine copolymer is 1000-2000; wherein the organic carboxylic acid polymer is polymaleic anhydride; the polyepoxysuccinate is selected from sodium polyepoxysuccinate; the gluconate is potassium gluconate; the lignosulfonate is ammonium lignosulfonate.
2. The low level high efficiency reverse osmosis membrane scale inhibitor of claim 1, wherein the bactericide is 2, 2-dibromo-3-cyanopropionamide.
3. The low level high efficiency reverse osmosis membrane scale inhibitor of claim 1, wherein the water is deionized water.
4. A process for preparing a low-content high-efficiency reverse osmosis membrane scale inhibitor according to any one of claims 1 to 3, comprising the steps of:
firstly, putting an organic carboxylic acid polymer, polyepoxysuccinate, gluconate, lignosulfonate and half of water in a reaction container according to a proportion, heating and stirring uniformly for later use;
step two, mixing adipic acid/diethylenetriamine copolymer with the other half of water, and uniformly stirring;
step three, heating the material obtained in the step one and dropwise adding the mixed solution obtained in the step two, and controlling the flow rate to ensure that the mixed solution is completely dripped at the same time;
fourthly, adding a bactericide to the material obtained in the third step, and preserving heat for a certain time;
and fifthly, cooling to room temperature to obtain the reverse osmosis membrane scale inhibitor.
5. The process for preparing a low-content high-efficiency reverse osmosis membrane scale inhibitor according to claim 4, wherein the stirring temperature in the first step is 40-50 ℃.
6. The process for preparing a low-content high-efficiency reverse osmosis membrane scale inhibitor according to claim 4, wherein in the third step, the temperature is raised to 70-75 ℃, and the dripping time is controlled to be 5-6 hours; and fourthly, the heat preservation time is 3-4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310557236.4A CN116550152B (en) | 2023-05-17 | 2023-05-17 | Low-content high-efficiency reverse osmosis membrane scale inhibitor and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310557236.4A CN116550152B (en) | 2023-05-17 | 2023-05-17 | Low-content high-efficiency reverse osmosis membrane scale inhibitor and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116550152A CN116550152A (en) | 2023-08-08 |
| CN116550152B true CN116550152B (en) | 2024-02-09 |
Family
ID=87491267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310557236.4A Active CN116550152B (en) | 2023-05-17 | 2023-05-17 | Low-content high-efficiency reverse osmosis membrane scale inhibitor and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116550152B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001047087A (en) * | 1999-08-10 | 2001-02-20 | Dainippon Ink & Chem Inc | Water system cleaning agent |
| CN101244871A (en) * | 2008-03-20 | 2008-08-20 | 同济大学 | Environment protection type composite antisludging agent for inhibiting silicon dioxide dirt deposition in water |
| CN110040857A (en) * | 2019-04-12 | 2019-07-23 | 嘉兴沃特泰科环保科技有限公司 | A kind of phosphorus-free green corrosion inhibiting and descaling agent and preparation method thereof |
| WO2021021860A1 (en) * | 2019-07-30 | 2021-02-04 | Solenis Technologies Cayman, L.P. | Silica scale inhibitors |
| CN113912195A (en) * | 2021-11-10 | 2022-01-11 | 山东天庆科技发展有限公司 | Non-phosphorus scale inhibitor for inhibiting silicon scale and preparation method thereof |
| CN114084969A (en) * | 2021-11-16 | 2022-02-25 | 常州市武进盛源化工有限公司 | Cooling water scale inhibitor and application thereof |
| CN114853188A (en) * | 2022-04-22 | 2022-08-05 | 西安热工研究院有限公司 | Phosphorus-free scale and corrosion inhibitor for heat supply network and preparation method and application thereof |
-
2023
- 2023-05-17 CN CN202310557236.4A patent/CN116550152B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001047087A (en) * | 1999-08-10 | 2001-02-20 | Dainippon Ink & Chem Inc | Water system cleaning agent |
| CN101244871A (en) * | 2008-03-20 | 2008-08-20 | 同济大学 | Environment protection type composite antisludging agent for inhibiting silicon dioxide dirt deposition in water |
| CN110040857A (en) * | 2019-04-12 | 2019-07-23 | 嘉兴沃特泰科环保科技有限公司 | A kind of phosphorus-free green corrosion inhibiting and descaling agent and preparation method thereof |
| WO2021021860A1 (en) * | 2019-07-30 | 2021-02-04 | Solenis Technologies Cayman, L.P. | Silica scale inhibitors |
| CN113912195A (en) * | 2021-11-10 | 2022-01-11 | 山东天庆科技发展有限公司 | Non-phosphorus scale inhibitor for inhibiting silicon scale and preparation method thereof |
| CN114084969A (en) * | 2021-11-16 | 2022-02-25 | 常州市武进盛源化工有限公司 | Cooling water scale inhibitor and application thereof |
| CN114853188A (en) * | 2022-04-22 | 2022-08-05 | 西安热工研究院有限公司 | Phosphorus-free scale and corrosion inhibitor for heat supply network and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| Synergistic effect of polycation and polyanion on silica polymerization;Bingru Zhang et al.;Journal of Colloid and Interface Science;第368卷;181-190 * |
| Synergistic inhibition effect and mechanism of polycation and polyanion on colloidal silica;Mingyue Tan er al.;Colloids and Surfaces A: Physicochemical and Engineering Aspects;第 610卷;125701 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116550152A (en) | 2023-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107362691B (en) | Green phosphorus-free scale inhibitor for reverse osmosis membrane for seawater desalination and preparation method thereof | |
| WO2015101246A1 (en) | Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, and method of preparing said inhibitor | |
| WO2015101124A1 (en) | Phosphorous-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning, and method of preparing said inhibitor | |
| CN109354219B (en) | Non-phosphorus scale inhibitor suitable for saline-alkali water reverse osmosis system | |
| CN105112900B (en) | Without phosphorus prefilming agent and its preparation and application for recirculating cooling water system | |
| CN113981427A (en) | Phosphorus-free prefilming agent for industrial circulating water system and preparation method and application thereof | |
| CN113522025A (en) | Reverse osmosis scale inhibitor and preparation method thereof | |
| CN110143675B (en) | Phosphorus-free pre-filming agent for industrial circulating cooling water system and preparation method thereof | |
| CN100418905C (en) | Reverse osmosis membrane anti-scaling agent and its preparation method | |
| CN116550152B (en) | Low-content high-efficiency reverse osmosis membrane scale inhibitor and preparation process thereof | |
| CN104925966B (en) | A kind of oil field system anti-incrustation corrosion inhibitor | |
| US6077440A (en) | Inhibition of silica and silicate deposition | |
| CN104607052A (en) | Alkaline low-phosphorous reverse osmosis membrane anti-scaling agent and preparation method | |
| US20230250000A1 (en) | Treatment of aqueous systems | |
| CN112777758A (en) | Environment-friendly corrosion and scale inhibitor and preparation method thereof | |
| CN114853240B (en) | Natural balance ultra-high concentration multiple and zero emission control method for circulating cooling water system | |
| CN100357331C (en) | Copolymer and its preparation method and reverse osmosis membrane protective agent comprising the copolymer and its uses | |
| CN112062111B (en) | Anti-deposition agent for wet-process phosphoric acid production | |
| CN1458084A (en) | Multifunctional phosphate glass water treatment agent and preparation method thereof | |
| CN114291908A (en) | Salt-making scale inhibitor and preparation method and application thereof | |
| Spinthaki et al. | The interplay between cationic polyethyleneimine and anionic polyelectrolytes for the control of silica scale formation in process waters | |
| CN105749756A (en) | Preparation method of scale inhibitor for reverse osmosis membrane | |
| CN113800653A (en) | Geothermal fluid scale inhibitor and preparation method and application thereof | |
| TWI716283B (en) | Antiscalant | |
| CN101941764B (en) | Circulating cooling water scale inhibition corrosion inhibitor and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |