CN111632403A - Method for washing polythiol crude product - Google Patents
Method for washing polythiol crude product Download PDFInfo
- Publication number
- CN111632403A CN111632403A CN202010552835.3A CN202010552835A CN111632403A CN 111632403 A CN111632403 A CN 111632403A CN 202010552835 A CN202010552835 A CN 202010552835A CN 111632403 A CN111632403 A CN 111632403A
- Authority
- CN
- China
- Prior art keywords
- water
- polythiol
- polyether
- demulsifier
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
- C07C319/26—Separation; Purification; Stabilisation; Use of additives
- C07C319/28—Separation; Purification
Abstract
The invention belongs to the field of chemical industry, and particularly relates to a water washing method of a polythiol crude product. The method comprises the following steps: mixing the polythiol crude product, a demulsifier and water, standing and layering to respectively obtain water-washed polythiol and water-washed waste liquid; the demulsifier is hydrophobic modified TiO loaded with polyether2. The method provided by the invention adds hydrophobic modified TiO loaded with polyether in the process of washing the crude polythiol product by water2As the demulsifier, the oil phase (polythiol) and the water phase (washing waste liquid) can achieve the demulsification and layering effects, thereby greatly shortening the standing and layering time, reducing the heat energy consumption of the washing process and improving the layering effects of the oil phase and the water phase. In addition, the demulsifier adopted by the invention integrates demulsification and adsorption, and can perform demulsification on a fine oil phase while realizing the demulsification on a solutionCapture and adsorb to avoid the occurrence of secondary emulsification and further reduce the content of polythiol in the water washing waste liquid.
Description
Technical Field
The invention belongs to the field of chemical industry, and particularly relates to a water washing method of a polythiol crude product.
Background
Optical resins have significant advantages in eyewear applications, with polyurethane-type optical resins having high refractive indices, high abbe numbers, low color and high impact properties being an important development direction in recent years. The main raw materials of the resin are polythiol and isocyanate. Wherein the quality of the polythiol plays a decisive role in the performance of the optical resin.
In order to ensure the quality of the polythiol product, the crude polythiol prepared by the traditional chemical synthesis process also needs to be washed and refined by water. However, because polythiol has a high viscosity and is easily emulsified after being mixed with water, the separation difficulty of polythiol from water phase after water washing is high, long-time standing is needed to achieve the layering effect of polythiol and water phase, and the system is required to be maintained at a high temperature (70-75 ℃ or even higher) in the standing process, so that the washing efficiency of crude polythiol is seriously affected, and the energy consumption of the water washing process is obviously increased. In addition, even after a long time of standing, the layering effect of the polythiol and the water phase is not ideal, and a large amount of polythiol still remains in the water phase, so that the COD value of the washing waste liquid is high, and the post-treatment cost of the washing waste liquid is increased.
Disclosure of Invention
In view of the above, the present invention provides a method for washing crude polythiol with water, which has high efficiency, low energy consumption, and low polythiol content in the washing waste liquid.
The invention provides a water washing method of a polythiol crude product, which comprises the following steps:
mixing the polythiol crude product, a demulsifier and water, standing and layering to respectively obtain water-washed polythiol and water-washed waste liquid;
the demulsifier is hydrophobic modified TiO loaded with polyether2。
Preferably, the polyether-supported hydrophobically modified TiO2The preparation method comprises the following steps:
i) mixing titanium dioxide and silane coupling agent in liquid phase for reaction to obtain hydrophobic modified TiO2；
ii) modifying the hydrophobically modified TiO2Mixing the modified TiO with polyether in a liquid phase to obtain hydrophobic modified TiO loaded with polyether2。
Preferably, in step i), the silane coupling agent comprises vinyltriethoxysilane and/or vinyltrimethoxysilane.
Preferably, in the step i), the using ratio of the titanium dioxide to the silane coupling agent is (1-15) g:10 mL.
Preferably, in the step i), the temperature of the mixing reaction is 40-70 ℃; the mixing reaction time is 5-30 h.
Preferably, in step ii), the polyether grades include one or more of AE9901, BPE2420, AF6231, AP113, PFA8311, SAP2187 and AP 17041.
Preferably, in step ii), the hydrophobically modified TiO2And polyether in a mass ratio of 1: (1.5 to 3).
Preferably, in the step ii), the mixing temperature is 50-90 ℃; the mixing time is preferably 4-8 h.
Preferably, the mass ratio of the crude polythiol to the water is 1: (1-3);
the content of the demulsifier in a mixed system consisting of a polythiol crude product, the demulsifier and water is 10-2000 ppm.
Preferably, the mixing temperature is 40-50 ℃; the mixing time is 20-40 min;
the temperature of standing and layering is 40-50 ℃; and the standing and layering time is 0.5-2 h.
Compared with the prior art, the invention provides a water washing method of a crude polythiol product. The water washing method provided by the invention comprises the following steps: mixing the polythiol crude product, a demulsifier and water, standing and layering to respectively obtain water-washed polythiol and water-washed waste liquid; the demulsifier is hydrophobic modified TiO loaded with polyether2. The method provided by the invention adds hydrophobic modified TiO loaded with polyether in the process of washing the crude polythiol product by water2As demulsifier, it can make oil phase (polythiol) and water phase (waste water washing liquor) attain the goal of demulsifying and demixingThe method has the advantages that the oil phase and the water phase can be quickly layered at relatively low temperature, the standing layering time is greatly shortened, the heat energy consumption of the water washing procedure is reduced, and the layering effect of the oil phase and the water phase is improved. In addition, the demulsifier adopted by the invention integrates demulsification and adsorption, and can capture and adsorb fine oil phase while realizing demulsification of the solution, thereby avoiding secondary emulsification, achieving the purpose of thoroughly separating the oil phase from the water phase, and further reducing the content of polythiol in the washing waste liquid. Experimental results show that when the method provided by the invention is used for washing the crude polythiol product, layering of an oil phase and a water phase can be realized by standing for 0.5-2 hours at 40-50 ℃, the COD value of the washing waste liquid is less than or equal to 2500mg/L, and the sulfide content is less than 1 mg/L.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The invention provides a water washing method of a polythiol crude product, which comprises the following steps:
mixing a polythiol crude product, a demulsifier and water, standing and layering to respectively obtain an oil phase and a water phase;
the demulsifier is hydrophobic modified TiO loaded with polyether2。
In the washing method provided by the invention, firstly, a demulsifier is prepared, and the demulsifier is hydrophobic modified TiO loaded with polyether2The preparation method specifically comprises the following steps:
i) mixing titanium dioxide and silane coupling agent in liquid phase for reaction to obtain hydrophobic modified TiO2；
ii) modifying the hydrophobically modified TiO2Mixing the modified TiO with polyether in a liquid phase to obtain hydrophobic modified TiO loaded with polyether2。
In the invention providedThe above polyether-loaded hydrophobically modified TiO2In the preparation step, firstly, titanium dioxide and a silane coupling agent are mixed and reacted in a liquid phase. Wherein the crystal form of the titanium dioxide is preferably anatase; the specific surface area of the titanium dioxide is preferably 150-350 m2A specific value of 150 m/g2/g、160m2/g、170m2/g、180m2/g、190m2/g、200m2/g、210m2/g、220m2/g、230m2/g、240m2/g、250m2/g、260m2/g、270m2/g、280m2/g、290m2/g、300m2/g、310m2/g、320m2/g、330m2/g、340m2G or 350m2(ii)/g; the silane coupling agent preferably comprises vinyltriethoxysilane and/or vinyltrimethoxysilane; the liquid phase is preferably water; the preferable dosage ratio of the titanium dioxide to the silane coupling agent is (1-15) g:10mL, more preferably (2.5-10) g:10mL, specifically 2.5g:10mL, 3g:10mL, 3.5g:10mL, 4g:10mL, 4.5g:10mL, 5g:10mL, 5.5g:10mL, 6g:10mL, 6.5g:10mL, 7g:10mL, 7.5g:10mL, 8g:10mL, 8.5g:10mL, 9g:10mL, 9.5g:10mL, or 10g:10 mL; the volume ratio of the silane coupling agent to the liquid phase is preferably 10: (150-300), more preferably 10: (175-200), specifically 10:175, 10:180, 10:185, 10:190, 10:195 or 10: 200. In the present invention, the specific process of the mixing reaction is preferably that the silane coupling agent and the liquid phase are mixed and then the obtained mixture is mixed with the titanium dioxide for reaction. In the invention, the temperature of the mixing reaction is preferably 40-70 ℃, more preferably 45-60 ℃, and specifically can be 45 ℃, 47 ℃, 50 ℃, 52 ℃, 55 ℃, 57 ℃ or 60 ℃; the stirring rate of the mixing reaction is preferably 100-500 r/min, and specifically can be 100r/min, 120r/min, 150r/min, 180r/min, 200r/min, 250r/min, 300r/min, 350r/min, 400r/min, 450r/min or 500 r/min; the mixing reaction time is preferably 5-30 h, more preferably 10-20 h, and specifically 10h, 12h, 15h, 17h and 20 h. After the mixed reaction is finished, post-treating the reaction product to obtain the hydrophobic modified TiO2. Wherein the post-processing toolThe bulk process preferably comprises sequentially filtering, washing and drying the reaction product.
The hydrophobic modified TiO loaded with polyether provided by the invention2In the preparation step, the hydrophobically modified TiO is obtained2Then, the hydrophobic modified TiO is added2And polyether in a liquid phase. Wherein the polyether includes but is not limited to one or more of the following: c9 alkanol polyether, C10 alkanol polyether and C11 alkanol polyether produced by Nantongning chemical industry, polyether L-64, propylene glycol block polyether L-64 and polyether 2040 produced by Jiangsu Haian petrochemical industry, fatty alcohol polyoxyethylene ether AEO-9 produced by Zhengzhou Yuxiang chemical industry and polyoxyethylene octyl phenol ether produced by Shandong Jinxin chemical industry; the liquid phase is preferably an alcoholic solvent including, but not limited to, ethanol and/or isopropanol; the hydrophobically modified TiO2And the polyether are preferably in a mass ratio of 1: (1.5-3), more preferably 1: (2-2.5), specifically 1:2, 1:2.1, 1:2.2, 1:2.3, 1:2.4 or 1: 2.5; the hydrophobically modified TiO2And the dosage ratio of the liquid phase is preferably (1-5) g: (50-100) mL, more preferably (3.5-5) g: (50-80) mL, specifically 3.5g:50mL, 4g:50mL or 5g:80 mL. In the invention, the mixing temperature is preferably 50-90 ℃, more preferably 60-80 ℃, and specifically can be 60 ℃, 65 ℃, 70 ℃, 75 ℃ or 80 ℃; the stirring speed of the mixing is preferably 100-500 r/min, and specifically can be 100r/min, 150r/min, 200r/min, 230r/min, 250r/min, 280r/min, 300r/min, 320r/min, 350r/min, 370r/min, 400r/min, 450r/min or 500 r/min; the mixing time is preferably 4-8 h, and more preferably 5-6 h. In the mixing process, polyether is gradually loaded to the hydrophobic modified TiO2The above step (1); after the mixing is finished, post-treating the mixed product to obtain the hydrophobic modified TiO loaded with polyether2. The specific process of the post-treatment preferably comprises the steps of sequentially carrying out suction filtration and drying on the mixed product.
In the washing method provided by the invention, after the demulsifier is obtained, the demulsifier is mixed with the crude polythiol and water, namely, the crude polythiol is washed with water in the presence of the demulsifier. Wherein, the crude polythiol can be specifically 2, 3-bis (2-mercaptoethylthio) -1-propanethiol and/or 3- (2-mercaptoethylthio) -1, 2-propanedithiol; the mass ratio of the crude polythiol to water is preferably 1: (1-3), more preferably 1: (1.5-2), specifically 1:1.5, 1:1.6, 1:1.7, 1:1.8, 1:1.9 or 1: 2; the content of the demulsifier in a mixed system consisting of the crude polythiol, the demulsifier and water is preferably 10-2000 ppm, more preferably 100-1000 ppm, and specifically can be 100ppm, 150ppm, 200ppm, 250ppm, 300ppm, 350ppm, 400ppm, 450ppm, 500ppm, 600ppm, 700ppm, 800ppm, 900ppm or 1000 ppm. In the present invention, the mixing temperature is preferably 40 to 50 ℃, and specifically may be 40 ℃, 41 ℃, 42 ℃, 43 ℃, 44 ℃, 45 ℃, 46 ℃, 47 ℃, 48 ℃, 49 ℃ or 50 ℃; the stirring speed of the mixing is preferably 100-500 r/min, and specifically can be 100r/min, 150r/min, 200r/min, 230r/min, 250r/min, 280r/min, 300r/min, 320r/min, 350r/min, 370r/min, 400r/min, 450r/min or 500 r/min; the mixing time is preferably 20-40 min, and specifically can be 20min, 25min, 30min, 35min or 40 min. After the mixing, the mixture was allowed to stand for delamination. Wherein the temperature of the standing layering is preferably 40-50 ℃, and specifically can be 40 ℃, 41 ℃, 42 ℃, 43 ℃, 44 ℃, 45 ℃, 46 ℃, 47 ℃, 48 ℃, 49 ℃ or 50 ℃; the standing and layering time is preferably 0.5-2 h, and specifically can be 0.5h, 0.6h, 0.7h, 0.8h, 0.9h, 1h, 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h, 1.8h, 1.9h or 2 h. And after standing and layering are finished, respectively obtaining an oil phase and a water phase. Wherein the oil phase is the polythiol after washing, and the water phase is the washing waste liquid.
In the water washing method provided by the present invention, in order to further reduce the content of impurities in the polythiol, it is preferable to repeatedly wash the oil phase obtained by the water washing, and the number of times of the repeated washing may be one or more.
The washing method provided by the invention adds the polyether-loaded hydrophobic modified TiO in the process of washing the crude polythiol product2As the demulsifier, the following technical advantages are provided:
1) the oil phase (polythiol) and the water phase (washing waste liquid) can achieve the effect of demulsification and layering, so that the oil phase and the water phase can be quickly layered at a relatively low temperature, the standing and layering time is greatly shortened, the heat energy consumption of a washing process is reduced, and the layering effect of the oil phase and the water phase is improved.
2) The demulsifier adopted by the invention integrates demulsification and adsorption, and can capture and adsorb fine oil phase while realizing demulsification of solution, thereby avoiding secondary emulsification, achieving the purpose of thoroughly separating the oil phase from the water phase, and further reducing the content of polythiol in the washing waste liquid.
3) The polythiol content in the washing waste liquid is low, the polythiol in the waste liquid does not need to be extracted by using an organic solvent additionally, and the waste liquid can reach the discharge standard only by simple treatment.
4) The demulsifier has small usage amount and does not influence the product performance.
Experimental results show that when the method provided by the invention is used for washing the crude polythiol product, layering of an oil phase and a water phase can be realized by standing for 0.5-2 hours at 40-50 ℃, the COD value of the washing waste liquid is less than or equal to 2500mg/L, and the sulfide content is less than 1 mg/L.
For the sake of clarity, the following examples are given in detail.
Example 1
(1) Adding 10mL of silane coupling agent (vinyl triethoxysilane) into 200mL of deionized water, stirring (stirring speed of 200r/min) uniformly, and adding 10g of titanium dioxide (anatase type, specific surface area of 200 m)2(g) is stirred at 50 ℃ (the stirring speed is 200r/min) and reacts for 10 hours, then the hydrophobic modified TiO is obtained after filtration, water washing and drying2。
(2) 3.5g of the above hydrophobically modified TiO was weighed2Adding 7g of polyether (polyether L-64, Jiangsu Haian petrochemical) and 50mL of isopropanol solution into a three-neck flask, stirring at 70 ℃ (stirring speed of 300r/min) for 6h, performing suction filtration, and drying to obtain hydrophobic modified TiO loaded with polyether2I.e. a demulsifier.
(3) Taking 300g of 2, 3-bis (2-mercapto-ethylthio) -1-propanethiol crude product (purity 89%), adding 450g of deionized water for primary washing, starting stirring (stirring speed is 350r/min), heating to 40 ℃, adding 100ppm of the demulsifier, stirring for 30min, standing for 0.5h, allowing the water phase and the oil phase to separate, and cutting the oil phase.
(4) And (4) repeating the operation of the step (3), and carrying out secondary water washing on the cut oil phase.
Combining the water phases obtained in the steps (3) and (4), and detecting, wherein the result is as follows: COD is 1500mg/L, ammonia nitrogen is 26mg/L, pH value is 7.3, and sulfide content is 0.5 mg/L.
Example 2
(1) Adding 10mL of silane coupling agent (vinyltrimethoxysilane, etc.) into 180mL of deionized water, stirring (stirring speed is 180r/min), adding 8g of titanium dioxide (anatase type, specific surface area is 260 m)2(g), stirring at 60 ℃ (stirring speed is 180r/min), reacting for 15h, filtering, washing with water, and drying to obtain the hydrophobic modified TiO2。
(2) Weighing 4g of the above hydrophobically modified TiO210g of polyether (fatty alcohol-polyoxyethylene ether AEO-9, Zhengzhou yuxiang chemical industry) and 50mL of ethanol solution are added into a three-neck flask, stirred at 60 ℃ for 5h (stirring speed is 280r/min), filtered and dried to obtain the hydrophobic modified TiO loaded with polyether2I.e. a demulsifier.
(3) Taking 200g of 3- (2-mercapto-ethylthio) -1, 2-propanedithiol crude product (purity is 88%), adding 400g of deionized water for washing once, starting stirring (stirring speed is 300r/min), heating to 50 ℃, adding 1000ppm of the demulsifier, stirring for 30min, standing for 1.5h, allowing the water phase and the oil phase to separate, and cutting the oil phase.
(4) And (4) repeating the operation of the step (3), and carrying out secondary water washing on the cut oil phase.
Combining the water phases obtained in the steps (3) and (4), and detecting, wherein the result is as follows: COD is 1800mg/L, ammonia nitrogen is 35mg/L, pH value is 7.5, and sulfide content is 0.9 mg/L.
Example 3
(1) Adding 20mL of silane coupling agent (vinyl triethoxysilane) into 350mL of deionized water, stirring uniformly (stirring speed of 200r/min), adding 5g of titanium dioxide (anatase type, specific surface area of 300 m)2(g), stirring at 45 ℃ (stirring speed is 150r/min), reacting for 20h, filtering, washing with water, and drying to obtain hydrophobic modificationTiO2。
(2) Weighing 5g of the above hydrophobically modified TiO2Adding 10g of polyether (C9 alkanol polyether, Nantonhen wetting chemical) and 80mL of isopropanol solution into a three-neck flask, stirring at 80 ℃ for 5h (stirring speed of 300r/min), filtering, and drying to obtain the hydrophobic modified TiO loaded with polyether2I.e. a demulsifier.
(3) Taking 300g of 2, 3-bis (2-mercapto-ethylthio) -1-propanethiol crude product (purity is 90%), adding 450g of deionized water for primary water washing, starting stirring (stirring speed is 300r/min), heating to 45 ℃, adding 200ppm of the demulsifier, stirring for 30min, standing for 1h to separate the water phase from the oil phase, and cutting the oil phase.
(4) And (4) repeating the operation of the step (3), and carrying out secondary water washing on the cut oil phase.
Combining the water phases obtained in the steps (3) and (4), and detecting, wherein the result is as follows: COD is 2500mg/L, ammonia nitrogen is 30mg/L, pH value is 7.2, and sulfide content is 0.7 mg/L.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for washing crude polythiol by water comprises the following steps:
mixing the polythiol crude product, a demulsifier and water, standing and layering to respectively obtain water-washed polythiol and water-washed waste liquid;
the demulsifier is hydrophobic modified TiO loaded with polyether2。
2. The water washing method according to claim 1, wherein the hydrophobically modified TiO loaded with polyether is2The preparation method comprises the following steps:
i) mixing titanium dioxide and silane coupling agent in liquid phase for reaction to obtain hydrophobic modified TiO2；
ii) modifying the hydrophobically modified TiO2Mixing the modified TiO with polyether in a liquid phase to obtain hydrophobic modified TiO loaded with polyether2。
3. The water washing method according to claim 2, wherein in step i), the silane coupling agent comprises vinyltriethoxysilane and/or vinyltrimethoxysilane.
4. The water washing method according to claim 2, wherein in step i), the ratio of the amount of the titanium dioxide to the amount of the silane coupling agent is (1-15) g:10 mL.
5. The water washing method according to claim 2, wherein in the step i), the temperature of the mixing reaction is 40-70 ℃; the mixing reaction time is 5-30 h.
6. A method as claimed in claim 2 wherein in step ii) the polyether grades include one or more of AE9901, BPE2420, AF6231, AP113, PFA8311, SAP2187 and AP 17041.
7. The water washing method according to claim 2, wherein in step ii), the hydrophobically modified TiO is2And polyether in a mass ratio of 1: (1.5 to 3).
8. The water washing method according to claim 2, wherein in the step ii), the temperature of the mixing is 50-90 ℃; the mixing time is preferably 4-8 h.
9. The water washing method according to claim 1, wherein the mass ratio of the crude polythiol to water is 1: (1-3);
the content of the demulsifier in a mixed system consisting of a polythiol crude product, the demulsifier and water is 10-2000 ppm.
10. The water washing method according to claim 1, wherein the temperature of the mixing is 40 to 50 ℃; the mixing time is 20-40 min;
the temperature of standing and layering is 40-50 ℃; and the standing and layering time is 0.5-2 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010552835.3A CN111632403A (en) | 2020-06-17 | 2020-06-17 | Method for washing polythiol crude product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010552835.3A CN111632403A (en) | 2020-06-17 | 2020-06-17 | Method for washing polythiol crude product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111632403A true CN111632403A (en) | 2020-09-08 |
Family
ID=72323027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010552835.3A Pending CN111632403A (en) | 2020-06-17 | 2020-06-17 | Method for washing polythiol crude product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111632403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790269A (en) * | 2022-04-20 | 2022-07-26 | 益丰新材料股份有限公司 | Polythiol composition and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544117A (en) * | 2003-11-27 | 2004-11-10 | 胜利油田胜利工程设计咨询有限责任公 | Demulsifying agent of nanometer microparticle texture |
| US20070299143A1 (en) * | 2006-06-22 | 2007-12-27 | Kalman Koczo | Method for demulsifying |
| US20120181217A1 (en) * | 2011-01-19 | 2012-07-19 | Saudi Arabian Oil Company | Petroleum Upgrading and Desulfurizing Process |
| US20180327653A1 (en) * | 2015-12-07 | 2018-11-15 | Halliburton Energy Services, Inc. | Demulsifier Compositions for Treatment of Subterranean Formations and Produced Oil |
| CN110652750A (en) * | 2019-09-30 | 2020-01-07 | 中国科学院过程工程研究所 | Demulsifier, preparation method and application thereof |
-
2020
- 2020-06-17 CN CN202010552835.3A patent/CN111632403A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544117A (en) * | 2003-11-27 | 2004-11-10 | 胜利油田胜利工程设计咨询有限责任公 | Demulsifying agent of nanometer microparticle texture |
| US20070299143A1 (en) * | 2006-06-22 | 2007-12-27 | Kalman Koczo | Method for demulsifying |
| US20120181217A1 (en) * | 2011-01-19 | 2012-07-19 | Saudi Arabian Oil Company | Petroleum Upgrading and Desulfurizing Process |
| US20180327653A1 (en) * | 2015-12-07 | 2018-11-15 | Halliburton Energy Services, Inc. | Demulsifier Compositions for Treatment of Subterranean Formations and Produced Oil |
| CN110652750A (en) * | 2019-09-30 | 2020-01-07 | 中国科学院过程工程研究所 | Demulsifier, preparation method and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790269A (en) * | 2022-04-20 | 2022-07-26 | 益丰新材料股份有限公司 | Polythiol composition and application thereof |
| CN114790269B (en) * | 2022-04-20 | 2023-03-10 | 益丰新材料股份有限公司 | Polythiol composition and application thereof |
| WO2023147792A1 (en) * | 2022-04-20 | 2023-08-10 | 益丰新材料股份有限公司 | Polythiol composition and use thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW401429B (en) | Highly active double metal cyanide catalysts, method of preparation thereof, and use thereof in epoxide polymerization | |
| CN101879406B (en) | Dual-alkali flue gas desulfurization device and desulfurization method | |
| CN111632403A (en) | Method for washing polythiol crude product | |
| DE19816136A1 (en) | Nanostructured moldings and layers and their production via stable water-soluble precursors | |
| CN107522602B (en) | Process and system for preparing DMM2 | |
| RU2014130210A (en) | METHOD FOR PRODUCING DEPOSITED SILICON DIOXIDES | |
| CN109384666A (en) | A method of organic acid in linkage recycling aqueous solutions of organic acids | |
| CN110540649B (en) | Purification method of polyhedral oligomeric silsesquioxane | |
| CN107903207A (en) | It is double（2,2,6,6 tetramethyl-piperidyl of n-octyloxy）The post treatment method of sebacate | |
| CN106902747B (en) | A kind of amidoxim mesoporous silicon dioxide micro-sphere adsorbent and preparation method thereof | |
| US9073049B2 (en) | Adsorbents for the recovery of catalyst from block co-polymer process and method for regenerating of the same | |
| CN101906114A (en) | Cation ultraviolet curing group-containing silicon oxide compound and preparation method thereof | |
| CN201791461U (en) | Dual-alkali flue gas desulfurization equipment | |
| CN105367779B (en) | The process for purification of isomery alcohol polyethers | |
| CN104610026B (en) | A kind of double-reactor produces the method and system of polymethoxy dimethyl ether | |
| CN101007766A (en) | Method for catalytic synthesis of diamyl carbonate and methyl amyl carbonate | |
| CN106380022B (en) | A kind for the treatment of process of H acid producing waste water, device and dedicated absorption resin material | |
| EP3505507A1 (en) | Method for purifying dihydroxynaphthalene | |
| US11452985B2 (en) | Method for producing metal-supported zeolite for alcoholic beverages, metal-supported zeolite for alcoholic beverages, and method for producing alcoholic beverages | |
| CN104387576B (en) | A kind of preparation method of glycidyl ether blocked allyl alcohol atactic polyether | |
| CN103304061B (en) | Treatment method of wastewater generated in production of beta-naphthalene sulfonic acid | |
| KR102157117B1 (en) | Manufacturing method of high purity butyl acetate using alkaline solution for reducing cotents of acetic acid | |
| CN116284642B (en) | Yellowing-resistant isocyanate composition and preparation method thereof | |
| CN108997572A (en) | A kind of block or atactic polyether aftertreatment technology | |
| WO2005090493A1 (en) | Sol-gel-coatings made of water-soluble oxalamides |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200908 |
|
| RJ01 | Rejection of invention patent application after publication |