CN114804376A - Black and grey water scale inhibition and dispersion agent for coal chemical industry - Google Patents
Black and grey water scale inhibition and dispersion agent for coal chemical industry Download PDFInfo
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- CN114804376A CN114804376A CN202210633478.2A CN202210633478A CN114804376A CN 114804376 A CN114804376 A CN 114804376A CN 202210633478 A CN202210633478 A CN 202210633478A CN 114804376 A CN114804376 A CN 114804376A
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- black
- grey water
- scale inhibition
- chemical industry
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- 239000003245 coal Substances 0.000 title claims abstract description 37
- 239000000126 substance Substances 0.000 title claims abstract description 25
- 239000010797 grey water Substances 0.000 title claims abstract description 21
- 230000005764 inhibitory process Effects 0.000 title claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 16
- 239000006185 dispersion Substances 0.000 title claims abstract description 16
- 239000010866 blackwater Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920002521 macromolecule Polymers 0.000 claims abstract description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 3
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 14
- 229920000877 Melamine resin Polymers 0.000 claims description 8
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 8
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 abstract description 5
- 239000002270 dispersing agent Substances 0.000 abstract description 4
- 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 description 3
- -1 methylene phosphonic acid Chemical compound 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 2
- CKLJMWTZIZZHCS-UHFFFAOYSA-N D-OH-Asp Natural products OC(=O)C(N)CC(O)=O CKLJMWTZIZZHCS-UHFFFAOYSA-N 0.000 abstract description 2
- CKLJMWTZIZZHCS-UWTATZPHSA-N L-Aspartic acid Natural products OC(=O)[C@H](N)CC(O)=O CKLJMWTZIZZHCS-UWTATZPHSA-N 0.000 abstract description 2
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 abstract description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004721 Polyphenylene oxide Substances 0.000 abstract description 2
- 229960005261 aspartic acid Drugs 0.000 abstract description 2
- 229910001424 calcium ion Inorganic materials 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract description 2
- 229910001425 magnesium ion Inorganic materials 0.000 abstract description 2
- 229920000570 polyether Polymers 0.000 abstract description 2
- 238000002309 gasification Methods 0.000 description 19
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000012993 chemical processing Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium 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
- 238000004939 coking Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002455 scale inhibitor Substances 0.000 description 2
- 238000005406 washing Methods 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
- 239000005997 Calcium carbide Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
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 coal chemical industry black and grey water scale inhibition and dispersion agent, which comprises the following components: organophosphorus hyperbranched macromolecules, 2-acrylamide-2-methylpropanesulfonic acid, polyamino polyether methylene phosphonic acid, L-aspartic acid and the balance of deionized water. The invention also discloses a preparation method of the organic phosphorus hyperbranched macromolecule. The invention designs and develops the raw materials from the aspect of molecular structure and preparation method, and starts from the complementation of single agent on the dispersion effects of suspended matters, calcium ions, magnesium ions and the like. The composition can be widely applied to the high-temperature fields of black and grey water dispersing agents, multi-effect evaporation and the like, has good dispersing effect, has the scale inhibition rate of 92 percent when the adding amount of the composition is 45mg/L and the hardness of 2000mg/L in grey water, has good dispersing effect, and can be degraded in natural environment.
Description
Technical Field
The invention relates to the field of coalification, in particular to a black and grey water scale inhibition and dispersion agent in coal chemical industry.
Background
Coal chemical industry uses coal as a raw material and produces various chemical products through a process of converting the coal into gas, liquid, solid fuel and chemicals through chemical processing.
The coal chemical industry includes primary chemical processing, secondary chemical processing and deep chemical processing of coal. Gasification, liquefaction and coking of coal, synthesis gas chemical industry, tar chemical industry, calcium carbide acetylene chemical industry and the like of coal belong to the range of coal chemical industry. The gasification, liquefaction and coking (dry distillation) of coal are three very important processing modes in the coal chemical industry.
Coal gasification refers to a process in which organic matters in coal and a gasifying agent (such as steam/air or oxygen) undergo a series of chemical reactions at a certain temperature and pressure in specific equipment to convert solid coal into combustible gas containing CO, H2, CH4 and the like and non-combustible gas containing CO2, N2 and the like. Coal gasification processes play a very important role in the coal chemical industry.
With the development of coal gasification technology, different gasification methods are formed, mainly including coal water slurry gasification and pulverized coal gasification, and according to the hydrodynamics behavior of coal in a gasification furnace, the gasification methods can be divided into four methods, namely moving gasification bed (also called fixed bed gasification), fluidized bed gasification, entrained flow bed gasification and molten bed gasification.
The coal gas washing water adopted in the coal water slurry pressure gasification technology is recycled, has great significance for saving water and reducing pollution, improving the effective energy utilization rate and the like, and is an advanced technology in the coal gasification technology. Because the water temperature and pressure range in the washing water recycling system is wide (the temperature is 50-240 ℃ and the pressure is 1-60 bar), the system has three phases of gas, liquid and solid and energy transfer, the working condition is complex, the hardness, alkalinity and other solid suspended matter content of calcium and magnesium in water are higher and are concentrated along with the continuous recycling of water, the suspended matter deposition and scaling tendency is serious, and the normal operation of the whole system is greatly influenced.
A scale-inhibiting dispersant for the ash water in coal chemical industry is developed based on the characteristics of coal-water slurry gasifying process, and is especially suitable for treating the ash water in coal-water slurry gasifying process with Texaco and multiple nozzles.
The existing ash water dispersing agent sold in the market has the defects of large addition amount (80-120mg/L), poor high temperature resistant effect, easy decomposition at high temperature, poor dispersing effect and the like.
Disclosure of Invention
Aiming at the problems in the related technology, the invention provides a scale inhibition and dispersion agent for black and grey water in coal chemical industry, which aims to overcome the technical problems in the related technology, and the invention aims to improve the grey water treatment effect, and the scale inhibition rate can still reach over 90 percent within 4 hours at the grey water temperature of 250 ℃ under the condition of adding 40-60 mg/L.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a coal chemical industry black and grey water scale inhibition and dispersion agent, which comprises the following components in parts by weight:
the balance of deionized water.
In the technical scheme, the method has the following advantages: 1. 2-acrylamido-2-methylpropanesulfonic acid is a white crystalline powder with a melting point of 185 ℃, a slightly sour chemical. The 2-acrylamide-2-methylpropanesulfonic acid can be used as a scale remover, a scale inhibitor and the like for heaters, cooling towers, air purifiers and gas purifiers. 2. The polyamino polyether methylene phosphonic acid is used as a corrosion and scale inhibitor in circulating cooling water, has good calcium tolerance in the circulating cooling water, has strong scale inhibition capacity on calcium carbonate and calcium sulfate, can well stabilize oxides of iron, zinc and manganese, and is very effective on silicon and silicate. When the concentration of calcium carbonate in the circulating cooling water is 300 times of that of calcium carbonate, the deposition of the calcium carbonate can be still inhibited.
Preferably, the organic phosphorus hyperbranched macromolecule is organic phosphorus hyperbranched macromolecule taking melamine as core.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a preparation method of organic phosphorus hyperbranched macromolecules, which comprises the following steps:
the method comprises the following steps: adding 2.5mol of maleic anhydride and a metered catalyst into 100ml of aqueous solution containing 1mol of melamine in a 500ml four-mouth bottle provided with a thermometer, a reflux condenser tube and a constant pressure dropping funnel, heating to 125 ℃, and reacting for 2 hours;
step two: then 2mol of melamine is added to react for 1.5h at 128 ℃;
step three: cooling to below 65 ℃, adding 10mol of formalin, and uniformly mixing;
step four: and (3) dropwise adding 10mol of sodium hypophosphite into the mixed solution, wherein the dropwise adding temperature is less than 65 ℃, and after the dropwise adding is finished, refluxing at 110 ℃ for 2h to obtain the organic phosphorus hyperbranched macromolecule.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a black and grey water scale inhibition and dispersion agent in coal chemical industry, which comprises organic phosphorus hyperbranched macromolecules, 2-acrylamide-2-methylpropanesulfonic acid, polyaminopolyether methylene phosphonic acid and L-aspartic acid, wherein the raw materials are designed and developed from molecular structures and preparation methods, and the effects of dispersing suspended matters, calcium ions, magnesium ions and the like are complemented from a single agent. The composition can be widely applied to the high-temperature fields of black gray water dispersing agents, multi-effect evaporation and the like, has good dispersing effect, has the scale inhibition rate of 92 percent when the addition amount of the composition is 45mg/L and the hardness of the composition in the black gray water is 2000mg/L, has good dispersing effect, and can be degraded in natural environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a preparation method of organic phosphorus hyperbranched macromolecules, which comprises the following steps:
the method comprises the following steps: adding 2.5mol of maleic anhydride and a metered catalyst into 100ml of aqueous solution containing 1mol of melamine in a 500ml four-mouth bottle provided with a thermometer, a reflux condenser tube and a constant pressure dropping funnel, heating to 125 ℃, and reacting for 2 hours;
step two: then 2mol of melamine is added to react for 1.5h at 128 ℃;
step three: cooling to below 65 ℃, adding 10mol of formalin, and uniformly mixing;
step four: and (3) dropwise adding 10mol of sodium hypophosphite into the mixed solution, wherein the dropwise adding temperature is less than 65 ℃, and after the dropwise adding is finished, refluxing at 110 ℃ for 2h to obtain the organic phosphorus hyperbranched macromolecule.
Examples 2-4 below all of the organophosphine hyperbranched macromolecules were prepared by the method of example 1.
Example 2
A coal chemical industry black and grey water scale inhibition and dispersion agent comprises the following components in parts by weight:
example 3
A coal chemical industry black and grey water scale inhibition and dispersion agent comprises the following components in parts by weight:
example 4
A coal chemical industry black and grey water scale inhibition and dispersion agent comprises the following components in parts by weight:
the scale inhibition performance was tested for examples 2-4 of the present invention. The scale inhibition and dispersion performance of the grey water (high hardness, high alkalinity and high suspended matter) of the multi-nozzle opposed coal water slurry gasification technology is measured, the test temperature simulates the temperature reached in actual operation on site, the temperature is controlled at 120 +/-5 ℃, and the experimental method refers to GB/T16632-. The results of the experiments are shown in tables 1-2 below.
TABLE 1 dispersing effect of the invention on hardness
TABLE 2 dispersing effect of the invention on suspended matter
The experimental results in tables 1-2 show that the coal chemical industry black and grey water scale inhibition and dispersion agent prepared in examples 2-4 shows excellent dispersion effect in a high-temperature, high-hardness and high-suspension coal water slurry gasification grey water system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The scale inhibition and dispersion agent for black and grey water in coal chemical industry is characterized by comprising the following components in parts by weight:
the balance of deionized water.
2. The black and grey water scale inhibition and dispersion agent in the coal chemical industry according to claim 1, wherein the organic phosphorus hyperbranched macromolecules are organic phosphorus hyperbranched macromolecules with melamine as a core.
3. A process for the preparation of organophosphorus hyperbranched macromolecules according to any one of claims 1 to 2, comprising the steps of:
the method comprises the following steps: adding 2.5mol of maleic anhydride and a metered catalyst into 100ml of aqueous solution containing 1mol of melamine in a 500ml four-mouth bottle provided with a thermometer, a reflux condenser tube and a constant pressure dropping funnel, heating to 125 ℃, and reacting for 2 hours;
step two: then 2mol of melamine is added to react for 1.5h at 128 ℃;
step three: cooling to below 65 ℃, adding 10mol of formalin, and uniformly mixing;
step four: and (3) dropwise adding 10mol of sodium hypophosphite into the mixed solution, wherein the dropwise adding temperature is less than 65 ℃, and after the dropwise adding is finished, refluxing at 110 ℃ for 2h to obtain the organic phosphorus hyperbranched macromolecule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210633478.2A CN114804376A (en) | 2022-06-06 | 2022-06-06 | Black and grey water scale inhibition and dispersion agent for coal chemical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210633478.2A CN114804376A (en) | 2022-06-06 | 2022-06-06 | Black and grey water scale inhibition and dispersion agent for coal chemical industry |
Publications (1)
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| CN114804376A true CN114804376A (en) | 2022-07-29 |
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| CN202210633478.2A Pending CN114804376A (en) | 2022-06-06 | 2022-06-06 | Black and grey water scale inhibition and dispersion agent for coal chemical industry |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172718A (en) * | 2006-10-31 | 2008-05-07 | 中国石油化工股份有限公司 | Antisludging agent and application of the same in water treatment |
| WO2019195523A1 (en) * | 2018-04-04 | 2019-10-10 | Chemtreat, Inc. | Corrosion inhibition treatment for aggressive fluids |
| CN110627230A (en) * | 2019-10-09 | 2019-12-31 | 天津正达科技有限责任公司 | Coal gasification high-hardness high-alkalinity slag water phosphorus-free scale inhibition and dispersion agent |
| CN112194261A (en) * | 2020-09-04 | 2021-01-08 | 上海鲁昕化工科技有限公司 | Coal chemical industry grey water scale inhibitor |
| CN112499780A (en) * | 2020-11-25 | 2021-03-16 | 山东天庆科技发展有限公司 | High-temperature-resistant scale inhibition and dispersion agent and preparation method thereof |
-
2022
- 2022-06-06 CN CN202210633478.2A patent/CN114804376A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172718A (en) * | 2006-10-31 | 2008-05-07 | 中国石油化工股份有限公司 | Antisludging agent and application of the same in water treatment |
| WO2019195523A1 (en) * | 2018-04-04 | 2019-10-10 | Chemtreat, Inc. | Corrosion inhibition treatment for aggressive fluids |
| CN110627230A (en) * | 2019-10-09 | 2019-12-31 | 天津正达科技有限责任公司 | Coal gasification high-hardness high-alkalinity slag water phosphorus-free scale inhibition and dispersion agent |
| CN112194261A (en) * | 2020-09-04 | 2021-01-08 | 上海鲁昕化工科技有限公司 | Coal chemical industry grey water scale inhibitor |
| CN112499780A (en) * | 2020-11-25 | 2021-03-16 | 山东天庆科技发展有限公司 | High-temperature-resistant scale inhibition and dispersion agent and preparation method thereof |
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Application publication date: 20220729 |