CN111943368A - Grey water dispersant and preparation method thereof - Google Patents
Grey water dispersant and preparation method thereof Download PDFInfo
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- CN111943368A CN111943368A CN201910397687.XA CN201910397687A CN111943368A CN 111943368 A CN111943368 A CN 111943368A CN 201910397687 A CN201910397687 A CN 201910397687A CN 111943368 A CN111943368 A CN 111943368A
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- Prior art keywords
- grey water
- percent
- acid
- acrylamide
- tert
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- 239000010797 grey water Substances 0.000 title claims abstract description 26
- 239000002270 dispersing agent Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 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 claims abstract description 14
- XFHJDMUEHUHAJW-UHFFFAOYSA-N n-tert-butylprop-2-enamide Chemical compound CC(C)(C)NC(=O)C=C XFHJDMUEHUHAJW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 10
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 10
- 229920001897 terpolymer Polymers 0.000 claims abstract description 10
- 229920001529 polyepoxysuccinic acid Polymers 0.000 claims abstract description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 11
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 11
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- 239000012856 weighed raw material Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims description 2
- QTECDUFMBMSHKR-UHFFFAOYSA-N prop-2-enyl prop-2-enoate Chemical group C=CCOC(=O)C=C QTECDUFMBMSHKR-UHFFFAOYSA-N 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 230000008025 crystallization Effects 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 14
- 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 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- AOJJSUZBOXZQNB-VTZDEGQISA-N 4'-epidoxorubicin Chemical compound O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@@H](O)[C@H](C)O1 AOJJSUZBOXZQNB-VTZDEGQISA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- 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
Landscapes
- Chemical & Material Sciences (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 discloses a grey water dispersing agent and a preparation method thereof. The grey water dispersing agent is prepared from the following raw materials in percentage by mass: 10 to 20 percent of polyacrylic acid, 5 to 15 percent of maleic anhydride/allyl ether/hydroxypropyl acrylate copolymer, 15 to 25 percent of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 10 to 30 percent of polyepoxysuccinic acid and the balance of water. The invention has the advantages that: it can be selectively adsorbed on the surfaces of suspended matter, calcium carbonate crystal and inorganic suspended particles to make the surface of suspended matter have strong negative charges with same property, and utilizes the principle of like-pole repulsion to prolong the crystallization induction period of scale-forming substances of calcium carbonate, etc., slow down scale formation of grey water and reduce the action of "crystallization centre" of suspended matter in grey water.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a grey water dispersing agent and a preparation method thereof.
Background
In the electric power system of China, the thermal power accounts for 75.16% of the total amount of the installation machine, the ash content of the fire coal of the thermal power plant is as high as about 28%, and the ash residue discharge is mainly hydraulic ash removal. As free CaO in the fly ash is continuously dissolved out in the hydraulic ash removal system, the ash pipe scaling problem exists in different degrees in each thermal power plant. According to the electric power environmental protection index, 40% of power plants are required to establish a grey water closed cycle system. Namely, the thick slurry conveying and ash conveying system with reused ash flushing backwater is adopted, so that the use amount of the ash flushing water and the amount of discharged water are greatly reduced. After closed-circuit operation, however, the scaling of the grey water is increased, so that the effective flow cross section is accelerated and reduced, and the resistance is increased. The increase in electricity consumption directly affects the safe and economical operation of the grey water system. Therefore, when the hydraulic ash removing system adopts a closed loop circulation, attention should be paid to prevent the serious scaling of the ash pipe and the water return pipe.
Scaling of hydraulic ash conveying systems is a common problem. A great deal of research is carried out on the scale inhibitor in recent decades at home and abroad, and various scale prevention measures are provided. Mainly comprises a magnetization antiscaling technology, an electrostatic and electronic antiscaling technology, an acidification antiscaling technology, a furnace smoke treatment antiscaling technology, a pre-precipitation carbon-removal antiscaling technology before a pipe and an antiscaling technology. However, in the current research and application situations, various methods are not mature, and the applicability of the methods is not strong.
Some separation techniques are adopted in the grey water treatment process at home and abroad, but the separation techniques are not widely used due to the defects of complicated operation, higher operating cost and the like. In some similar turbid circulating water systems, scale inhibiting and dispersing agents are added. But the method is a treatment means with simple operation, and the added medicament is single, so that the method can not simultaneously meet the scale inhibition and dispersion requirements of complex water quality conditions in a system, such as different temperature ranges, different solid suspension contents and the like. The effectiveness of water treatment of the system does not guarantee long-term operation of the process equipment.
Disclosure of Invention
The invention aims to provide a grey water dispersing agent and a preparation method thereof. The grey water dispersing agent can be applied to grey water systems for a long time, prevents scaling of high-pressure water pumps, pipelines and the like, and enables production equipment to run normally for a long period.
The technical scheme for realizing the purpose of the invention is as follows: the grey water dispersing agent is prepared from the following raw materials in percentage by mass: 10 to 20 percent of polyacrylic acid, 5 to 15 percent of maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, 15 to 25 percent of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 10 to 30 percent of polyepoxysuccinic acid, and the balance of water.
In the grey water dispersing agent, the relative molecular weight of the polyacrylic acid is 1500-2500.
In the grey water dispersing agent, in the maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, the mass ratio of the monomers is as follows: acrylic acid allyl polyoxyethylene ether hydroxypropyl acrylate is 1.5 to 0.5 to 1 to 0.2 to 0.5.
In the grey water dispersing agent, in the acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, the mass ratio of monomers is as follows: 2-acrylamide-2-methylpropanesulfonic acid/N-tert-butylacrylamide (8-10): 3-5).
The preparation method of the grey water dispersing agent comprises the following steps: weighing the raw materials according to the proportion. And secondly, feeding the weighed raw materials into a stirring kettle. And thirdly, stirring for 1.5 to 2.5 hours at the material temperature of 30 to 50 ℃ under the condition that the upper part of the stirring kettle is opened.
When the grey water dispersing agent is used, the adding concentration is 50-70 mg/L.
The invention has the positive effects that: (1) the ash water dispersing agent has good synergy of all components, can be selectively adsorbed on the surfaces of suspended matters, calcium carbonate crystals and inorganic suspended particles, enables the surfaces of the suspended matters to have strong negative charges with the same property, utilizes the mechanism of like charges repelling each other, prolongs the crystallization induction period of scale forming substances such as calcium carbonate and the like, slows down the scaling of the ash water, and reduces the effect of 'crystallization centers' of suspended matters in the ash water. (2) The agent of the invention contains no phosphor, is nontoxic and is beneficial to environmental protection.
Detailed Description
(example 1)
The grey water dispersing agent of the embodiment is prepared from the following raw materials in percentage by weight: 10% of polyacrylic acid, 15% of maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, 20% of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 20% of sodium polyepoxysuccinate and 35% of deionized water. The preparation method of the grey water dispersing agent comprises the following steps:
weighing the raw materials according to the proportion. And secondly, feeding the weighed raw materials into a stirring kettle. And thirdly, stirring for 2 hours at the material temperature of 30-50 ℃ under the condition that the upper part of the stirring kettle is opened.
(example 2)
The remainder of this example is the same as example 1, except that: the weight percentage of each raw material is as follows: 15% of polyacrylic acid, 10% of maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, 15% of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 20% of sodium polyepoxysuccinate and 40% of deionized water.
(example 3)
The remainder of this example is the same as example 1, except that: the weight percentage of each raw material is as follows: 20% of polyacrylic acid, 8% of maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, 10% of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 25% of sodium polyepoxysuccinate and 37% of deionized water.
(example 4)
The remainder of this example is the same as example 1, except that: the weight percentage of each raw material is as follows: 15% of polyacrylic acid, 5% of maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, 20% of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 30% of sodium polyepoxysuccinate and 30% of deionized water.
(example 5)
The remainder of this example is the same as example 1, except that: the weight percentage of each raw material is as follows: 15% of polyacrylic acid, 10% of maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, 25% of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 10% of sodium polyepoxysuccinate and 40% of deionized water.
Claims (5)
1. An ash water dispersant characterized by: the material is prepared from the following raw materials in percentage by mass: 10 to 20 percent of polyacrylic acid, 5 to 15 percent of maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, 15 to 25 percent of acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, 10 to 30 percent of polyepoxysuccinic acid, and the balance of water.
2. The grey water dispersant of claim 1, characterized in that: the polyacrylic acid has a relative molecular weight of 1500 to 2500.
3. The grey water dispersant of claim 1, characterized in that: in the maleic anhydride/allyl polyoxyethylene ether/hydroxypropyl acrylate copolymer, the mass ratio of the monomers is
Acrylic acid allyl polyoxyethylene ether hydroxypropyl acrylate is 1.5 to 0.5 to 1 to 0.2 to 0.5.
4. The grey water dispersant of claim 1, characterized in that: in the acrylic acid/2-acrylamide-2-methylpropanesulfonic acid/N-tert-butyl acrylamide terpolymer, the mass ratio of the monomers is as follows: 2-acrylamide-2-methylpropanesulfonic acid/N-tert-butylacrylamide (8-10): 3-5).
5. Method for the preparation of a grey water dispersant according to any of claims 1 to 4, characterized in that: the method comprises the following steps: weighing the raw materials according to the proportion; secondly, feeding the weighed raw materials into a stirring kettle; thirdly, stirring for 2 hours under the condition that the upper part of the stirring kettle is open and the temperature of the materials is 30 to 50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397687.XA CN111943368A (en) | 2019-05-14 | 2019-05-14 | Grey water dispersant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397687.XA CN111943368A (en) | 2019-05-14 | 2019-05-14 | Grey water dispersant and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111943368A true CN111943368A (en) | 2020-11-17 |
Family
ID=73336593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910397687.XA Pending CN111943368A (en) | 2019-05-14 | 2019-05-14 | Grey water dispersant and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111943368A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4126549A (en) * | 1973-02-14 | 1978-11-21 | Ciba-Geigy (Uk) Limited | Treatment of water |
| CN102815882A (en) * | 2012-08-03 | 2012-12-12 | 山西科腾环保科技有限公司 | High-performance water reducer of polycarboxylic acid, and preparation method thereof |
| CN103833150A (en) * | 2014-02-21 | 2014-06-04 | 常州科威天使环保科技有限公司 | Dirt dispersion agent for circulating cooling water system and preparation method of dirt dispersion agent |
| CN104843878A (en) * | 2013-11-19 | 2015-08-19 | 钟司雨 | Environment-friendly scale and corrosion inhibitor |
| CN105152234A (en) * | 2015-07-10 | 2015-12-16 | 东北石油大学 | Method for eliminating combination station system discharge water quality deterioration caused by oil well acid washing flowback fluid |
| CN109052675A (en) * | 2018-08-16 | 2018-12-21 | 科威天使环保科技集团股份有限公司 | Environment-friendly type anti-incrustation corrosion inhibitor and preparation method thereof |
-
2019
- 2019-05-14 CN CN201910397687.XA patent/CN111943368A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4126549A (en) * | 1973-02-14 | 1978-11-21 | Ciba-Geigy (Uk) Limited | Treatment of water |
| CN102815882A (en) * | 2012-08-03 | 2012-12-12 | 山西科腾环保科技有限公司 | High-performance water reducer of polycarboxylic acid, and preparation method thereof |
| CN104843878A (en) * | 2013-11-19 | 2015-08-19 | 钟司雨 | Environment-friendly scale and corrosion inhibitor |
| CN103833150A (en) * | 2014-02-21 | 2014-06-04 | 常州科威天使环保科技有限公司 | Dirt dispersion agent for circulating cooling water system and preparation method of dirt dispersion agent |
| CN105152234A (en) * | 2015-07-10 | 2015-12-16 | 东北石油大学 | Method for eliminating combination station system discharge water quality deterioration caused by oil well acid washing flowback fluid |
| CN109052675A (en) * | 2018-08-16 | 2018-12-21 | 科威天使环保科技集团股份有限公司 | Environment-friendly type anti-incrustation corrosion inhibitor and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 宋丽莎等: "《火力发电厂用水技术"》", 31 May 2007, 北京：中国电力出版社, pages: 225 * |
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