CN105016492A - Corrosion and scale inhibitor and application thereof in saline-alkali soil brackish water desalting plant - Google Patents
Corrosion and scale inhibitor and application thereof in saline-alkali soil brackish water desalting plant Download PDFInfo
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- CN105016492A CN105016492A CN201510399422.5A CN201510399422A CN105016492A CN 105016492 A CN105016492 A CN 105016492A CN 201510399422 A CN201510399422 A CN 201510399422A CN 105016492 A CN105016492 A CN 105016492A
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- scale inhibitors
- corrosion inhibiting
- acid
- descaling agent
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- 239000002455 scale inhibitor Substances 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 230000007797 corrosion Effects 0.000 title claims abstract description 26
- 238000005260 corrosion Methods 0.000 title claims abstract description 26
- 238000011033 desalting Methods 0.000 title abstract description 4
- 239000003513 alkali Substances 0.000 title abstract 2
- 239000002689 soil Substances 0.000 title abstract 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 54
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 26
- WCGUUGGRBIKTOS-GPOJBZKASA-N (3beta)-3-hydroxyurs-12-en-28-oic acid Chemical compound C1C[C@H](O)C(C)(C)[C@@H]2CC[C@@]3(C)[C@]4(C)CC[C@@]5(C(O)=O)CC[C@@H](C)[C@H](C)[C@H]5C4=CC[C@@H]3[C@]21C WCGUUGGRBIKTOS-GPOJBZKASA-N 0.000 claims abstract description 19
- 239000008367 deionised water Substances 0.000 claims abstract description 16
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 16
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims abstract description 15
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 15
- 229920000570 polyether Polymers 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000010612 desalination reaction Methods 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 230000005764 inhibitory process Effects 0.000 claims description 22
- 241001481760 Erethizon dorsatum Species 0.000 claims description 16
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 12
- OCBHHZMJRVXXQK-UHFFFAOYSA-M benzyl-dimethyl-tetradecylazanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 OCBHHZMJRVXXQK-UHFFFAOYSA-M 0.000 claims description 11
- DCEMCPAKSGRHCN-UHFFFAOYSA-N oxirane-2,3-dicarboxylic acid Chemical compound OC(=O)C1OC1C(O)=O DCEMCPAKSGRHCN-UHFFFAOYSA-N 0.000 claims description 11
- 230000003628 erosive effect Effects 0.000 claims description 9
- 238000009938 salting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims description 2
- 229940096998 ursolic acid Drugs 0.000 abstract 3
- PLSAJKYPRJGMHO-UHFFFAOYSA-N ursolic acid Natural products CC1CCC2(CCC3(C)C(C=CC4C5(C)CCC(O)C(C)(C)C5CCC34C)C2C1C)C(=O)O PLSAJKYPRJGMHO-UHFFFAOYSA-N 0.000 abstract 3
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Chinese gallotannin Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 abstract 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 abstract 1
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 abstract 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 abstract 1
- WNBGYVXHFTYOBY-UHFFFAOYSA-N benzyl-dimethyl-tetradecylazanium Chemical compound CCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 WNBGYVXHFTYOBY-UHFFFAOYSA-N 0.000 abstract 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 239000001630 malic acid Substances 0.000 abstract 1
- 235000011090 malic acid Nutrition 0.000 abstract 1
- 229920001529 polyepoxysuccinic acid Polymers 0.000 abstract 1
- 229920002258 tannic acid Polymers 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 4
- 230000003245 working effect Effects 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000001095 magnesium carbonate Substances 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
- 229960001708 magnesium carbonate Drugs 0.000 description 3
- 235000014380 magnesium carbonate Nutrition 0.000 description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N itaconic acid Chemical compound OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- SZHQPBJEOCHCKM-UHFFFAOYSA-N 2-phosphonobutane-1,2,4-tricarboxylic acid Chemical compound OC(=O)CCC(P(O)(O)=O)(C(O)=O)CC(O)=O SZHQPBJEOCHCKM-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910001422 barium ion Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ion Chemical class 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000019600 saltiness Nutrition 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a corrosion and scale inhibitor and application thereof in a saline-alkali soil brackish water desalting plant. The scale inhibitor comprises the following components: 28-31 parts of ursolic acid, 24-28 parts of citric acid, 2-4 parts of malic acid, 15-18 parts of gallotannic acid, 5-8 parts of sodium lignin sulfonate, 14-15 parts of polyepoxysuccinic acid, 1-3 parts of dimethyl sulfoxide, 2-3 parts of tetradecyl dimethyl benzyl ammonium, 0.5-1.5 parts of allyl polyether and 40-45 parts of deionized water. The preparation method of the scale inhibitor comprises the step of preparing an ursolic acid and citric acid water solution: adding ursolic acid and citric acid into the deionized water, stirring for dissolution, enabling the rotation speed to be 40 rpm, and stirring for 12-15 min. By adopting and using the scale inhibitor provided by the invention, the scale inhibiting ratio is 96.7% to 99.5%; and the corrosion rate of brackish water to the brackish water desalting plant is 0.0005 mm/a.
Description
Technical field
The invention belongs to technique for desalting salt water field, relate to a kind of corrosion inhibiting and descaling agent, be specifically related to a kind of corrosion inhibiting and descaling agent and the application in the brackish water desalination equipment of saltings thereof.
Background technology
Desalination apparatus, be applicable to high salinity area and inwelling region, adopt the pressurized vessel of high-quality, and high-pressure pump, coordinate rational pre-processing device, effectively can remove the objectionable constituent such as the inorganic salt in water, heavy metal ion, organism, bacterium and germ, be the high-quality water of irrigation water standard by desalination.
For preventing producing indissoluble inorganic salts, fouling precipitation and etching apparatus component on system pipeline part because salt water is concentrated in desalination process, corrosion inhibiting and descaling agent will be added when desalination.
Usually use the raw materials such as Sodium hexametaphosphate 99, Tri sodium Phosphate, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, phosphonobutane tricarboxylic acid, toxilic acid, vinylformic acid and methylene-succinic acid as Scale inhibitors at present.
The corrosion inhibiting and descaling agent of prior art has following defect and deficiency: the scale inhibition performance that the corrosion inhibiting and descaling agent of prior art is applied in brackish water desalination equipment is low; The erosion rate of slightly salty to brackish water desalination equipment is high; Brackish water desalination equipment is easily corroded, and work-ing life is shorter.
Summary of the invention
The present invention is directed to above deficiency, a kind of corrosion inhibiting and descaling agent and the application in the brackish water desalination equipment of saltings thereof be provided, realize following goal of the invention:
1, the scale inhibition performance that Scale inhibitors is applied in brackish water desalination equipment is improved, scale inhibition performance is made to be 96.7-99.5%, calcium carbonate scale inhibition performance is 96.2-98.6%, magnesiumcarbonate scale inhibition performance is 94.5-98.5%, calcium sulfate scale inhibition performance is 98.2-100%, barium carbonate scale inhibition performance is 98.6-100%, and ferric oxide scale inhibition performance is 92.5-95.6%;
2, reduce slightly salty to the erosion rate of brackish water desalination equipment, make erosion rate be 0.0005mm/a;
3, the work-ing life of brackish water desalination equipment is extended.
For solving the problems of the technologies described above, by the following technical solutions:
A kind of corrosion inhibiting and descaling agent, described Scale inhibitors comprises following component: urson, citric acid, oxysuccinic acid, Weibull.
Below the further improvement to technique scheme:
Described Scale inhibitors also comprises following component: sodium lignosulfonate, poly-epoxy succinic acid, dimethyl sulfoxide (DMSO), myristyl benzyl dimethyl ammonium chloride, allyl polyether, deionized water.
The weight proportion of described Scale inhibitors component is: urson 28-31 part, citric acid 24-28 part, oxysuccinic acid 2-4 part, Weibull 15-18 part, sodium lignosulfonate 5-8 part, poly-epoxy succinic acid 14-15 part, dimethyl sulfoxide (DMSO) 1-3 part, myristyl benzyl dimethyl ammonium chloride 2-3 part, allyl polyether 0.5-1.5 part, deionized water 40-45 part.
The weight proportion of described Scale inhibitors component is: urson 30 parts, citric acid 26 parts, oxysuccinic acid 3 parts, 18 parts, Weibull, sodium lignosulfonate 7 parts, poly-epoxy succinic acid 15 parts, dimethyl sulfoxide (DMSO) 3 parts, myristyl benzyl dimethyl ammonium chloride 3 parts, allyl polyether 1.3 parts, deionized water 42 parts.
The preparation method of described Scale inhibitors comprises and prepares urson, citric acid aqueous solution Procedure: join in deionized water by urson, citric acid, stirring and dissolving, rotating speed 40rpm, stirs 12-15 minute.
The preparation method of described Scale inhibitors also comprises melting sodium lignosulfonate and allyl polyether step, and the temperature of melting is 70-80 DEG C.
The application of corrosion inhibiting and descaling agent in the brackish water desalination equipment of saltings, described application comprises Scale inhibitors and adds front preparation: before Scale inhibitors adds, and needs thin up; Amount of water is 3 times of Scale inhibitors quality.
Described application also comprises and adds Scale inhibitors: the amount that often process 1 ton of slightly salty adds Scale inhibitors is 4g.
Adopt and use Scale inhibitors of the present invention, scale inhibition performance is 96.7-99.5%.
Use Scale inhibitors of the present invention, slightly salty is 0.0005mm/a to the erosion rate of brackish water desalination equipment.
the present invention compared with prior art, has following beneficial effect:
1, use Scale inhibitors of the present invention, scale inhibition performance is 96.7-99.5%, and calcium carbonate scale inhibition performance is 96.2-98.6%, magnesiumcarbonate scale inhibition performance is 94.5-98.5%, calcium sulfate scale inhibition performance is 98.2-100%, and barium carbonate scale inhibition performance is 98.6-100%, and ferric oxide scale inhibition performance is 92.5-95.6%;
2, use Scale inhibitors of the present invention, obviously reduce slightly salty to the erosion rate of brackish water desalination equipment; Erosion rate is 0.0005mm/a;
3, Scale inhibitors of the present invention can extend the 8 years work-ing life of brackish water desalination equipment.
Embodiment
embodiment 1a kind of corrosion inhibiting and descaling agent
The weight proportion of each component of Scale inhibitors is:
Urson 28 parts, citric acid 24 parts, oxysuccinic acid 2 parts, 15 parts, Weibull, sodium lignosulfonate 5 parts, poly-epoxy succinic acid 14 parts, dimethyl sulfoxide (DMSO) 1 part, myristyl benzyl dimethyl ammonium chloride 2 parts, allyl polyether 0.5 part, deionized water 40 parts.
embodiment 2a kind of corrosion inhibiting and descaling agent
The weight proportion of each component of Scale inhibitors is:
Urson 29 parts, citric acid 25 parts, oxysuccinic acid 3 parts, 16 parts, Weibull, sodium lignosulfonate 6 parts, poly-epoxy succinic acid 14 parts, dimethyl sulfoxide (DMSO) 2 parts, myristyl benzyl dimethyl ammonium chloride 2 parts, allyl polyether 1.2 parts, deionized water 41 parts.
embodiment 3a kind of corrosion inhibiting and descaling agent
The weight proportion of each component of Scale inhibitors is:
Urson 30 parts, citric acid 26 parts, oxysuccinic acid 3 parts, 18 parts, Weibull, sodium lignosulfonate 7 parts, poly-epoxy succinic acid 15 parts, dimethyl sulfoxide (DMSO) 3 parts, myristyl benzyl dimethyl ammonium chloride 3 parts, allyl polyether 1.3 parts, deionized water 42 parts.
embodiment 4a kind of corrosion inhibiting and descaling agent
The weight proportion of each component of Scale inhibitors is:
Urson 31 parts, citric acid 28 parts, oxysuccinic acid 4 parts, 18 parts, Weibull, sodium lignosulfonate 8 parts, poly-epoxy succinic acid 15 parts, dimethyl sulfoxide (DMSO) 3 parts, myristyl benzyl dimethyl ammonium chloride 3 parts, allyl polyether 1.5 parts, deionized water 45 parts.
the preparation method of embodiment 5 one kinds of Scale inhibitorss
Step 1, take each component of Scale inhibitors respectively according to the weight proportion of embodiment 1-4.
Step 2, prepare urson, the citric acid aqueous solution
Urson, citric acid are joined in deionized water, stirring and dissolving, rotating speed 40rpm, stir 12-15 minute, leave standstill 10 minutes, for subsequent use.
Step 3, filtration
By oxysuccinic acid, Weibull, poly-epoxy succinic acid mixing, the mixture obtained joins in the solution of step 2, and under 45-50 DEG C of condition, stirring and dissolving is complete, suction filtration while hot, retains filtrate.
Step 4, melting sodium lignosulfonate and allyl polyether
After sodium lignosulfonate, allyl polyether mixing, be heated to 70-80 DEG C, make the mixture of molten state, be added drop-wise in the solution of step 3, dropping limit, limit is stirred, and in dropping process, solution temperature controls at 30-40 DEG C.
Step 5, obtained finished product
Solution step 4 obtained is cooled to 20-25 DEG C, in cooled solution, adds dimethyl sulfoxide (DMSO), myristyl benzyl dimethyl ammonium chloride; Be stirred to after adding and dissolve completely, obtain finished product Scale inhibitors.
the application of embodiment 6 one kinds of Scale inhibitorss in the brackish water desalination equipment of saltings
Step 1, slightly salty water quality: the salinity of salt water is 3.5-3.8g/L, pH is 8.4-8.6, saltiness is 0.12-0.13%, calcium ion concn is 580-590mg/L, carbon acid ion concentration is 220-250 mg/L, and sulfate ion concentration is 1000-1190mg/L, and barium ion concentration is 90-130mg/L, iron ion content 20-23mg/L, magnesium ion content 680-685mg/L.
Step 2, Scale inhibitors add front preparation
Before Scale inhibitors adds, need thin up; In Scale inhibitors, add deionized water, stir, amount of water is 3 times of Scale inhibitors quality.
Step 3, add Scale inhibitors
During use, add Scale inhibitors from the Scale inhibitors dosing tank of brackish water desalination equipment, usage quantity adds the ready Scale inhibitors diluent of 16g step 2 for often processing 1 ton of slightly salty, and the amount wherein containing Scale inhibitors is 4g.
result measures
Measure scale-inhibiting properties:
Measure the scale-inhibiting properties of the Scale inhibitors of embodiment 1-4, measurement result is in table 1;
Table 1
From table 1, embodiment 3 is preferred embodiment.
Through test, use Scale inhibitors of the present invention, scale inhibition performance is 96.7-99.5%, calcium carbonate scale inhibition performance is 96.2-98.6%, and magnesiumcarbonate scale inhibition performance is 94.5-98.5%, and calcium sulfate scale inhibition performance is 98.2-100%, barium carbonate scale inhibition performance is 98.6-100%, and ferric oxide scale inhibition performance is 92.5-95.6%; Use Scale inhibitors of the present invention, obviously reduce slightly salty to the erosion rate of brackish water desalination equipment, erosion rate is 0.0005mm/a, and Scale inhibitors of the present invention can extend the 8 years work-ing life of brackish water desalination equipment.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a corrosion inhibiting and descaling agent, is characterized in that: described Scale inhibitors comprises following component: urson, citric acid, oxysuccinic acid, Weibull.
2. a kind of corrosion inhibiting and descaling agent according to claim 1, is characterized in that: described Scale inhibitors also comprises following component: sodium lignosulfonate, poly-epoxy succinic acid, dimethyl sulfoxide (DMSO), myristyl benzyl dimethyl ammonium chloride, allyl polyether, deionized water.
3. a kind of corrosion inhibiting and descaling agent according to claim 1, is characterized in that: the weight proportion of described Scale inhibitors component is: urson 28-31 part, citric acid 24-28 part, oxysuccinic acid 2-4 part, Weibull 15-18 part, sodium lignosulfonate 5-8 part, poly-epoxy succinic acid 14-15 part, dimethyl sulfoxide (DMSO) 1-3 part, myristyl benzyl dimethyl ammonium chloride 2-3 part, allyl polyether 0.5-1.5 part, deionized water 40-45 part.
4. a kind of corrosion inhibiting and descaling agent according to claim 3, is characterized in that: the weight proportion of described Scale inhibitors component is: urson 30 parts, citric acid 26 parts, oxysuccinic acid 3 parts, 18 parts, Weibull, sodium lignosulfonate 7 parts, poly-epoxy succinic acid 15 parts, dimethyl sulfoxide (DMSO) 3 parts, myristyl benzyl dimethyl ammonium chloride 3 parts, allyl polyether 1.3 parts, deionized water 42 parts.
5. a kind of corrosion inhibiting and descaling agent according to claim 1, it is characterized in that: the preparation method of described Scale inhibitors comprises and prepares urson, citric acid aqueous solution Procedure: join in deionized water by urson, citric acid, stirring and dissolving, rotating speed 40rpm, stirs 12-15 minute.
6. a kind of corrosion inhibiting and descaling agent according to claim 1, is characterized in that: the preparation method of described Scale inhibitors also comprises melting sodium lignosulfonate and allyl polyether step, and the temperature of melting is 70-80 DEG C.
7. the application of corrosion inhibiting and descaling agent in the brackish water desalination equipment of saltings, is characterized in that: described application comprises Scale inhibitors and adds front preparation: before Scale inhibitors adds, and needs thin up; Amount of water is 3 times of Scale inhibitors quality.
8. the application of a kind of corrosion inhibiting and descaling agent according to claim 7 in the brackish water desalination equipment of saltings, is characterized in that: described application also comprises and adds Scale inhibitors: the amount that often process 1 ton of slightly salty adds Scale inhibitors is 4g.
9. a kind of corrosion inhibiting and descaling agent according to claim 1, is characterized in that: adopt and use Scale inhibitors of the present invention, scale inhibition performance is 96.7-99.5%.
10. a kind of corrosion inhibiting and descaling agent according to claim 1, is characterized in that: use Scale inhibitors of the present invention, and slightly salty is 0.0005mm/a to the erosion rate of brackish water desalination equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399422.5A CN105016492B (en) | 2015-07-09 | 2015-07-09 | Corrosion and scale inhibitor and application thereof in saline-alkali soil brackish water desalting plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399422.5A CN105016492B (en) | 2015-07-09 | 2015-07-09 | Corrosion and scale inhibitor and application thereof in saline-alkali soil brackish water desalting plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105016492A true CN105016492A (en) | 2015-11-04 |
| CN105016492B CN105016492B (en) | 2017-04-12 |
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| CN201510399422.5A Expired - Fee Related CN105016492B (en) | 2015-07-09 | 2015-07-09 | Corrosion and scale inhibitor and application thereof in saline-alkali soil brackish water desalting plant |
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| CN106348468A (en) * | 2016-08-29 | 2017-01-25 | 山东胜伟园林科技有限公司 | Efficient compound scale inhibitor and preparing method thereof |
| CN106430641A (en) * | 2016-08-29 | 2017-02-22 | 山东胜伟园林科技有限公司 | High-efficiency slow release scale inhibitor and preparation method thereof |
| CN109012210A (en) * | 2018-08-03 | 2018-12-18 | 中碳能源(山东)有限公司 | A kind of reverse osmosis membrane antisludging agent and preparation method thereof and the application in calcining petroleum coke original sub-block |
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| US20030132166A1 (en) * | 2002-01-15 | 2003-07-17 | Paul Rey | Method of treating mine drainage |
| CN102491543A (en) * | 2011-12-27 | 2012-06-13 | 天津通悦科技有限公司 | Phosphorus-free corrosion-retarding scale inhibitor used for industrial circulating cooling water |
| CN103253777A (en) * | 2012-02-20 | 2013-08-21 | 中国石油化工股份有限公司 | Composition used in scale-inhibition corrosion inhibitor, scale-inhibition corrosion inhibitor, and application thereof |
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| CN106348468A (en) * | 2016-08-29 | 2017-01-25 | 山东胜伟园林科技有限公司 | Efficient compound scale inhibitor and preparing method thereof |
| CN106430641A (en) * | 2016-08-29 | 2017-02-22 | 山东胜伟园林科技有限公司 | High-efficiency slow release scale inhibitor and preparation method thereof |
| CN109012210A (en) * | 2018-08-03 | 2018-12-18 | 中碳能源(山东)有限公司 | A kind of reverse osmosis membrane antisludging agent and preparation method thereof and the application in calcining petroleum coke original sub-block |
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| CN105016492B (en) | 2017-04-12 |
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