CN114477478A - Environment-friendly salt inhibitor and preparation method thereof - Google Patents
Environment-friendly salt inhibitor and preparation method thereof Download PDFInfo
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- CN114477478A CN114477478A CN202111673605.3A CN202111673605A CN114477478A CN 114477478 A CN114477478 A CN 114477478A CN 202111673605 A CN202111673605 A CN 202111673605A CN 114477478 A CN114477478 A CN 114477478A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 32
- 239000003112 inhibitor Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 229920001577 copolymer Polymers 0.000 claims abstract description 7
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 6
- 150000004679 hydroxides Chemical class 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 25
- 238000001914 filtration Methods 0.000 claims description 7
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 29
- 239000000047 product Substances 0.000 description 23
- 239000000243 solution Substances 0.000 description 11
- 239000013078 crystal Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000276 potassium ferrocyanide Substances 0.000 description 5
- 239000000264 sodium ferrocyanide Substances 0.000 description 5
- 235000012247 sodium ferrocyanide Nutrition 0.000 description 5
- XOGGUFAVLNCTRS-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] XOGGUFAVLNCTRS-UHFFFAOYSA-N 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- GTSHREYGKSITGK-UHFFFAOYSA-N sodium ferrocyanide Chemical compound [Na+].[Na+].[Na+].[Na+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] GTSHREYGKSITGK-UHFFFAOYSA-N 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 229920000805 Polyaspartic acid Polymers 0.000 description 3
- 229920002197 Sodium polyaspartate Polymers 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010979 pH adjustment Methods 0.000 description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 3
- PVGBHEUCHKGFQP-UHFFFAOYSA-N sodium;n-[5-amino-2-(4-aminophenyl)sulfonylphenyl]sulfonylacetamide Chemical compound [Na+].CC(=O)NS(=O)(=O)C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 PVGBHEUCHKGFQP-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 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
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 1
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 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
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride 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
- 239000003518 caustics Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910002026 crystalline silica Inorganic materials 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 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
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
- C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (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)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention provides an environment-friendly salt inhibitor which is characterized by being prepared from the following components in percentage by mass: 10-20% of polyaspartate, 10-15% of ferrocyanide, 20-30% of copolymer of acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid, 3-5% of hydroxide salt, 10-20% of dispersant and the balance of water. The salt inhibitor is low in dosing cost, can achieve the effect of the existing product, sprays water back by containing salt aiming at high carbonate, high sulfate, high silicon dioxide and the like, is excellent in effect, and is lower in dosing amount than the market products.
Description
Technical Field
The invention relates to the field of treating agents, in particular to an environment-friendly salt inhibitor and a preparation method thereof
Background
At present, a hazardous waste incineration system usually comprises a rotary kiln, a secondary combustion chamber, a waste heat boiler, a quench water tower, a bag-type dust remover, an alkaline tower and a flue gas heater, and the process flow for treating flue gas is as follows: the flue gas passes through the rotary kiln → the secondary combustion chamber → the waste heat boiler → the quenching water tower → the bag-type dust remover → the alkaline washing tower → the flue gas heater, and is finally discharged. In the caustic tower, acidic gases (hydrogen chloride, sulfur dioxide, hydrogen fluoride, etc.) in the flue gas are generally washed with a sodium hydroxide solution. When the pH value of the alkaline washing liquid is reduced to about 9.0, adding alkali again to increase the pH value, and continuously recycling. As the recycling is continued, the salt content in the lye is higher and higher, and the salt concentration can be as high as 18 percent or even higher. The higher and higher salt content causes that a large amount of near-white miscellaneous salt is separated out from the filling material and the nozzle of the alkaline washing tower in the circulation process of the alkaline washing liquid, thereby causing blockage.
In addition, most of the salt inhibitors in the market at present mainly comprise organic phosphorus, the dosage is large, generally about 1000ppm, the cost is high, the intermediate products and products of the organic phosphorus in the production process are easy to cause environmental pollution when entering the environment, and the salt inhibitors can be separated out to become phosphorus-containing waste in the use process and possibly cause certain influence on the environment. With the improvement of national requirements for environmental protection, phosphorus-free products are a great trend for market development.
Disclosure of Invention
The phosphorus-free product is used for replacing organic phosphorus, and the environment-friendly salt inhibitor is finally prepared by mixing and reacting according to a certain proportion, has low dosing cost, can achieve the effect of the existing product, has excellent effect by spraying water back with salt containing high carbonate, high sulfate, high silicon dioxide and the like, and has lower dosing amount than the market product.
The invention provides an environment-friendly salt inhibitor which is characterized by being prepared from the following components in percentage by mass:
further, the invention provides an environment-friendly salt inhibitor, which is characterized in that:
the dispersant is polyacrylate.
Further, the invention provides an environment-friendly salt inhibitor, which is characterized in that:
the mass ratio of the copolymer to the dispersant is 1: 1.3-1.5.
Further, the invention provides an environment-friendly salt inhibitor, which is characterized in that:
the specific preparation method is as follows:
s1, sequentially adding water, a copolymer and a dispersing agent, and stirring at room temperature for 30-40 min;
s2, adding hydroxide salt, and continuously stirring until the solution is clear or few suspended matters exist;
s3, adding polyaspartate and ferrocyanide, and continuing to stir for 60-90 min;
and S4, filtering to obtain the product.
Further, the invention provides an environment-friendly salt inhibitor, which is characterized in that:
the stirring speed of the stirring is 60-80 r/min.
Further, the invention provides an environment-friendly salt inhibitor, which is characterized in that:
in S2, the hydroxide salt was added in such an amount that the pH of the system was adjusted to a pH of not less than 12.
Further, the invention provides an environment-friendly salt inhibitor, which is characterized in that:
the filtration was carried out in a 1-10 micron Y-filter.
Drawings
FIG. 1 is a graph showing the comparison of the effects of the experimental examples;
the right drawing is a drawing after use, and the left drawing is a drawing before use.
Detailed Description
Example 1
The specific formula is as follows:
component 1, polyaspartic acid sodium: 10%, selecting the product with the relative molecular mass of 1000-2000-;
component 2, sodium ferrocyanide: 15 percent of
Component 3, acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid copolymer (M ═ 279): 30 percent of the total weight of the mixture,
component 4, sodium hydroxide: about 5% (based on the actual pH adjustment end point)
Component 5, dispersant sodium polyacrylate 10%
Component 6, water: balance of
The preparation method comprises the following steps:
the first step is as follows: at normal temperature, firstly adding water and the component 3 into a reaction kettle, slowly adding the dispersant component 5 while stirring, wherein the stirring speed is 60-80 r/min, a small amount of suspended matters appear in the solution, and along with the addition of the component five, the suspended matters become more and then slowly become less; the mass ratio of the component 3 to the component 5 is 1: 1.3-1.5, stirring for 30 minutes after the materials are added;
the second step is that: adding sodium hydroxide into the solution, and stirring for 60 minutes until the solution is clear or has few suspended matters, wherein the addition amount of the sodium hydroxide is adjusted to be equal to or more than 12 according to the pH value;
the third step: sequentially adding sodium polyaspartate and sodium ferrocyanide (or potassium ferrocyanide), and continuing stirring for 60 minutes after all the materials are added;
the fourth step: filtering with 5 μm Y-type filter to obtain the product.
The product can be prepared at normal temperature and normal pressure, and the preparation method is simple. The dosage is low, and the product loss rate is low.
Example 2
The specific formula is as follows:
component 1, polyaspartic acid sodium: 20 percent of
Component 2, potassium ferrocyanide: 10 percent of
Component 3, acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid copolymer: 30 percent of
Component 4, sodium hydroxide: about 3% (based on the actual pH adjustment end point)
Component 5, dispersant sodium polyacrylate 20%
Component 6, water: the preparation method of the balance comprises the following steps:
the first step is as follows: at normal temperature, firstly adding water and the component 3 into a reaction kettle, slowly adding the dispersant component 5 while stirring, wherein the stirring speed is 60-80 r/min, a small amount of suspended matters appear in the solution, and along with the addition of the component five, the suspended matters become more and then slowly become less; the mass ratio of the component 3 to the component 5 is 1: 1.3-1.5, stirring for 40 minutes after the materials are added;
the second step is that: adding sodium hydroxide into the solution, and stirring for 50 minutes until the solution is clear or has few suspended matters, wherein the addition amount of the sodium hydroxide is adjusted to be equal to or more than 12 according to the pH value;
the third step: sequentially adding sodium polyaspartate and sodium ferrocyanide (or potassium ferrocyanide), and stirring for 90min
The fourth step: filtering with 5 μm Y-type filter to obtain the product.
The product can be prepared at normal temperature and normal pressure, and the preparation method is simple. The dosage is low, and the product loss rate is low.
Example 3
The specific formula is as follows:
component 1, polyaspartic acid sodium: 15 percent of
Component 2, sodium or potassium ferrocyanide: 15 percent of
Component 3, acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid copolymer: 25 percent of
Component 4, sodium hydroxide: about 5% (based on the actual pH adjustment end point)
Component 5, dispersant sodium polyacrylate 15%
Component 6, water: balance of
The preparation method comprises the following steps:
the first step is as follows: at normal temperature, firstly adding water and the component 3 into a reaction kettle, slowly adding the dispersant component 5 while stirring, wherein the stirring speed is 60-80 r/min, a small amount of suspended matters appear in the solution, and along with the addition of the component five, the suspended matters become more and then slowly become less; the mass ratio of the component 3 to the component 5 is 1: 1.3-1.5, stirring for 30 minutes after the materials are added;
the second step is that: adding sodium hydroxide into the solution, and stirring for 40 minutes until the solution is clear or has few suspended matters, wherein the addition amount of the sodium hydroxide is adjusted to be equal to or more than 12 according to the pH value;
the third step: sequentially adding sodium polyaspartate and sodium ferrocyanide (or potassium ferrocyanide), and stirring for 80 min
The fourth step: filtering with 5 μm Y-type filter to obtain the product.
The product can be prepared at normal temperature and normal pressure, and the preparation method is simple. The dosage is low, and the product loss rate is low.
The use effect is as follows:
by taking the example 1 as an example, tests show that the crystal form of calcium carbonate crystals, calcium sulfate crystals, sodium chloride crystalline silica crystals and calcium phosphate can be changed when the dosage of the product is more than or equal to 500ppm, and precipitated crystals are fluffy powder and are not easy to aggregate into large particles.
The specific test method comprises preparing test solution containing 2% calcium chloride, 1% sodium sulfate, 1% sodium bicarbonate, 1% sodium silicate and 1% sodium phosphate, adding salt inhibitor, evaporating to dryness to observe crystal form,
through with prior patent technical application number: 202010506511.6, application number: 202110096409.8, application number: 202011243019.0 the salt inhibition effect is found by comparing the components:
when the dosage is 500ppm, the effect of the drug is obviously superior to that of other three patents, namely, the solid form of the drug-added product is uniform fluffy powder, the fluffy degree of the contrast product is not as good as that of the drug-added product, blocky crystals with different proportions of 15-25% exist, and when the dosage is more than or equal to 1000ppm, the effects of several products are very good.
The salt resistance test is carried out by taking water samples of Shanghai Yimei environmental environment limited company and Changzhou Dawei environmental science and technology limited company, the test effect of the product is very good, when the salt content is 1%, the addition amount is only 100ppm to reach the required client, and the addition amount of the three patent technologies needs to reach 200ppm to reach the product effect.
Claims (7)
1. The environment-friendly salt inhibitor is characterized by being prepared from the following components in percentage by mass:
2. the environment-friendly salt inhibitor as set forth in claim 1, wherein:
the dispersant is polyacrylate.
3. The environment-friendly salt inhibitor as set forth in claim 1, wherein:
the mass ratio of the copolymer to the dispersant is 1: 1.3-1.5.
4. The environment-friendly salt inhibitor as claimed in claim 1, wherein the specific preparation method is as follows:
s1, sequentially adding water, a copolymer and a dispersing agent, and stirring at room temperature for 30-40 min;
s2, adding hydroxide salt, and continuously stirring until the solution is clear or few suspended matters exist;
s3, adding polyaspartate and ferrocyanide, and continuing stirring for 60-90 min;
and S4, filtering to obtain the product.
5. The environment-friendly salt inhibitor as set forth in claim 1, wherein:
the stirring speed of the stirring is 60-80 revolutions per minute.
6. The environment-friendly salt inhibitor as set forth in claim 1, wherein:
in S2, the hydroxide salt was added in such an amount that the pH of the system was adjusted to a pH of not less than 12.
7. The environment-friendly salt inhibitor as set forth in claim 1, wherein:
the filtration was performed in a 1-10 micron Y-filter.
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|---|---|---|---|---|
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| CN112079454A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
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-
2021
- 2021-12-31 CN CN202111673605.3A patent/CN114477478A/en active Pending
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|---|---|---|---|---|
| US4530766A (en) * | 1983-04-15 | 1985-07-23 | Rohm And Haas Company | Method of inhibiting scaling in aqueous systems with low molecular weight copolymers |
| EP1950180A1 (en) * | 2007-01-25 | 2008-07-30 | GEO - Ground Engineering Operations Produtos e Solucoes de Engenharia e Geotecnia, Lda | Chemical composition and process for treating liquid dispersions |
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| Title |
|---|
| 严瑞瑄, 化学工业出版社 * |
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Application publication date: 20220513 |