CN118142219B - Production process of high-carbon alcohol emulsion defoamer for membrane method sea water desalination process - Google Patents
Production process of high-carbon alcohol emulsion defoamer for membrane method sea water desalination process Download PDFInfo
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- 239000000839 emulsion Substances 0.000 title claims abstract description 85
- 239000013530 defoamer Substances 0.000 title claims abstract description 73
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 69
- 239000013535 sea water Substances 0.000 title claims abstract description 47
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000012528 membrane Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 230000001804 emulsifying effect Effects 0.000 claims abstract description 75
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 54
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 54
- 239000000203 mixture Substances 0.000 claims abstract description 49
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- CNNRPFQICPFDPO-UHFFFAOYSA-N octacosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCO CNNRPFQICPFDPO-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- -1 fatty acid ester Chemical class 0.000 claims abstract description 28
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 27
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 27
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims abstract description 26
- OULAJFUGPPVRBK-UHFFFAOYSA-N tetratriacontyl alcohol Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCO OULAJFUGPPVRBK-UHFFFAOYSA-N 0.000 claims abstract description 25
- 235000013871 bee wax Nutrition 0.000 claims abstract description 24
- 239000012166 beeswax Substances 0.000 claims abstract description 24
- 229940082500 cetostearyl alcohol Drugs 0.000 claims abstract description 24
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 24
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 24
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 24
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 24
- 235000021314 Palmitic acid Nutrition 0.000 claims abstract description 23
- BTFJIXJJCSYFAL-UHFFFAOYSA-N arachidyl alcohol Natural products CCCCCCCCCCCCCCCCCCCCO BTFJIXJJCSYFAL-UHFFFAOYSA-N 0.000 claims abstract description 23
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 23
- 239000000194 fatty acid Substances 0.000 claims abstract description 23
- 229930195729 fatty acid Natural products 0.000 claims abstract description 23
- PYIDGJJWBIBVIA-UYTYNIKBSA-N lauryl glucoside Chemical compound CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O PYIDGJJWBIBVIA-UYTYNIKBSA-N 0.000 claims abstract description 23
- 229940048848 lauryl glucoside Drugs 0.000 claims abstract description 23
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims abstract description 23
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims abstract description 22
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims abstract description 22
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229960002666 1-octacosanol Drugs 0.000 claims abstract description 21
- GCSJLQSCSDMKTP-UHFFFAOYSA-N ethenyl(trimethyl)silane Chemical compound C[Si](C)(C)C=C GCSJLQSCSDMKTP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000004945 emulsification Methods 0.000 claims abstract description 6
- 229940092738 beeswax Drugs 0.000 claims abstract description 4
- 229940098695 palmitic acid Drugs 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 40
- 239000002994 raw material Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 13
- 239000012071 phase Substances 0.000 description 40
- 235000019198 oils Nutrition 0.000 description 38
- 230000000694 effects Effects 0.000 description 13
- 239000000047 product Substances 0.000 description 13
- 239000012267 brine Substances 0.000 description 12
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 12
- 239000003995 emulsifying agent Substances 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- MUHFRORXWCGZGE-KTKRTIGZSA-N 2-hydroxyethyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCO MUHFRORXWCGZGE-KTKRTIGZSA-N 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- 239000002562 thickening agent Substances 0.000 description 5
- 235000021355 Stearic acid Nutrition 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 229940095098 glycol oleate Drugs 0.000 description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 4
- 229920002401 polyacrylamide Polymers 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000008117 stearic acid Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000004200 microcrystalline wax Substances 0.000 description 3
- 235000019808 microcrystalline wax Nutrition 0.000 description 3
- 229940049964 oleate Drugs 0.000 description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- NOPFSRXAKWQILS-UHFFFAOYSA-N docosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCO NOPFSRXAKWQILS-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 235000008708 Morus alba Nutrition 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229960000735 docosanol Drugs 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010850 salt effect Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Colloid Chemistry (AREA)
Abstract
The invention discloses a production process of a high-carbon alcohol emulsion defoamer for a membrane method sea water desalination process. Firstly, mixing and heating stearyl alcohol, eicosanol and octacosanol to be completely melted to form an oil phase; then adding methyl isobutyl ketone, polyethylene glycol fatty acid ester, cetostearyl alcohol polyoxyethylene ether, palmitic acid, lauryl glucoside, beeswax, dodecylamine polyoxyethylene ether, vinyl trimethyl silane, hydroxypropyl methyl cellulose and other components into water to form an emulsifying mixture; adding the emulsifying mixture into the oil phase, and performing emulsification treatment at a proper temperature; and finally, cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer. Compared with the prior art, the high-carbon alcohol emulsion defoamer has good defoaming performance, can effectively control foam generation in the sea water desalination process, and improves the process efficiency and stability.
Description
Technical Field
The invention relates to the technical field of defoamers, in particular to a production process of a high-carbon alcohol emulsion defoamer for a membrane method sea water desalination process.
Background
The high-carbon alcohol emulsion defoamer used in the membrane method sea water desalination process can help to improve the efficiency and stability in the sea water desalination process. Membrane desalination is a process in which salt and impurities in seawater are separated from pure water by a semipermeable membrane. In the process, seawater enters the membrane assembly after pretreatment, and water molecules are separated from salt and impurity molecules by applying pressure, so that fresh water is obtained. In the process of membrane seawater desalination, a large amount of foam is easy to generate in the seawater due to high-pressure operation, water flow power and other factors. These foams can adhere to the membrane surface, affecting the flux and separation efficiency of the membrane. The high-carbon alcohol emulsion defoamer has the functions of reducing the generation and accumulation of foam and improving the efficiency and stability of a membrane system.
The high-carbon alcohol emulsion defoamer is an emulsion defoamer consisting of high-carbon alcohol, an emulsifier and other auxiliary components. The defoaming agent has good emulsion stability and defoaming performance, can effectively control the generation of foam in the sea water desalination process, and reduces the influence of the foam on a membrane component. The membrane method sea water desalination process using the high-carbon alcohol emulsion defoamer can effectively control foam generation, and improve process efficiency and stability, thereby realizing efficient and reliable sea water desalination process.
The use of high-carbon alcohol emulsion defoamers in sea water desalination processes may face the following pain difficulties: the high-carbon alcohol emulsion defoamer needs to maintain good emulsion stability in the sea water desalination process so as to ensure the durability and defoaming effect of the emulsion. The factors such as the selection and the proportion of the emulsifying agent in the emulsifying process, the operation of the emulsifying equipment and the like can influence the stability of the emulsion. In the seawater desalination process, the defoamer needs to maintain stability and defoaming performance under high temperature conditions. The high temperature environment may cause decomposition of the defoamer, deactivation or decrease the defoaming effect. The defoamer also needs to maintain good dispersibility and defoaming properties in high salt concentration seawater. Some defoamers may precipitate, aggregate, or lose activity in high salt environments.
Aiming at the pain difficulties, researchers of the invention need to screen and optimize the defoamer, and find the high-carbon alcohol emulsion defoamer with good emulsion stability, high-temperature tolerance, brine environment adaptability and ecological environment friendliness so as to improve the efficiency and sustainability of the seawater desalination process.
The patent CN115155115B discloses a high-carbon alcohol emulsion defoamer for papermaking and a preparation method and application thereof, belonging to the technical field of defoamers for papermaking. Mixing high-carbon alcohol with stearic acid, and heating and melting to form an oil phase; dispersing water glass, polyacrylic acid and an emulsifier in water, heating to 70-90 ℃ to obtain a water phase; and adding the water phase into the oil phase to form an oil-water mixture, and emulsifying to obtain the high-carbon alcohol emulsion defoamer. The method for synthesizing the colloidal silica at the interface of the high-carbon alcohol and the water by utilizing the in-situ reaction of stearic acid, polyacrylic acid and sodium silicate is combined with a small amount of surfactant, so that the stability of the high-carbon alcohol emulsion is improved, the consumption of the surfactant is greatly reduced, and the defoaming effect of the high-carbon alcohol emulsion defoamer is improved. However, the defoaming effect of the high-carbon alcohol emulsion defoamer prepared by the invention is still poor, and the high-temperature stability is general.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: the production process of the high-carbon alcohol emulsion defoamer is good in defoaming effect and high in high-temperature stability.
In order to achieve the above object, the present invention adopts the following technical scheme:
The high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following components: stearyl alcohol, arachidyl alcohol, behenyl alcohol, methyl isobutyl ketone, polyethylene glycol fatty acid ester, cetostearyl alcohol polyoxyethylene ether, palmitic acid, lauryl glucoside, beeswax, dodecylamine polyoxyethylene ether, vinyl trimethylsilane, hydroxypropyl methylcellulose, and water.
Preferably, the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following components in parts by weight: 8-12 parts of stearyl alcohol, 1-3 parts of eicosanol, 1-3 parts of octacosanol, 0.5-2 parts of methyl isobutyl ketone, 0.5-2 parts of polyethylene glycol fatty acid ester, 0.5-2 parts of cetostearyl alcohol polyoxyethylene ether, 0.5-2 parts of palmitic acid, 0.4-0.6 part of lauryl glucoside, 0.2-0.4 part of beeswax, 0.2-0.4 part of dodecylamine polyoxyethylene ether, 0.4-0.6 part of vinyl trimethyl silane, 0.1-0.3 part of hydroxypropyl methyl cellulose and 60-80 parts of water.
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
Step 1, weighing raw materials according to parts by weight, mixing and heating stearyl alcohol, eicosanol and octacosanol until the raw materials are completely melted to be used as an oil phase;
Step 2, mixing methyl isobutyl ketone, polyethylene glycol fatty acid ester, cetostearyl alcohol polyoxyethylene ether, palmitic acid, lauryl glucoside, beeswax, dodecylamine polyoxyethylene ether, vinyl trimethyl silane and hydroxypropyl methyl cellulose in water, heating and heating, and stirring until all components are uniformly mixed to be used as an emulsifying mixture;
step 3, adding the emulsifying mixture into an oil phase under the stirring state, maintaining the temperature, and emulsifying by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
The heating temperature in the step 1 is 80-100 ℃.
And in the step 2, heating to 70-90 ℃ and stirring at 100-300 rpm.
And (3) stirring at 50-200 rpm in the stirring state in the step (3).
And in the step3, the temperature is kept at 60-80 ℃.
In the step 3, the emulsification rotation speed is 10000-15000 rpm, and the emulsification time is 5-20 min.
The higher salt content in the seawater increases the difficulty of defoaming. This is because the presence of salt increases the surface tension of the liquid, making the bubble more stable and more difficult to collapse and dissipate. Some special surfactants or defoamers are needed to realize defoaming in seawater, and the defoaming agent has the following characteristics: strong surface tension reducing ability: the defoamer needs to have lower surface tension, can effectively reduce the surface tension of seawater and destroy the stability of bubbles. Rapid diffusion and adsorption capacity: the defoamer needs to diffuse and adsorb rapidly in the seawater to the surface of the bubbles, forming a thin film to break the structure of the bubbles and promote their collapse. Inhibiting salt effects: the defoamer needs to be able to interact with the salt and reduce the effect of the salt on the surfactant to reduce the surface tension to maintain the defoaming effect.
The functions of each substance in the production process of the high-carbon alcohol emulsion defoamer are as follows:
Stearyl alcohol, eicosanol, and octacosanol: these higher alcohols are components of the oil phase and provide the basis for the emulsion. They are melted into liquid form during heating to form an oil phase.
Methyl isobutyl ketone helps dissolve other ingredients in the aqueous phase and promotes the emulsification process.
Polyethylene glycol fatty acid ester: as an emulsifier, helps to disperse uniformly and form an emulsion.
Cetostearyl alcohol polyoxyethylene ether: has good interfacial activity and emulsifying property, can stabilize the formation of emulsion, and plays a role in defoaming in the sea water desalination process.
Palmitic acid: as an emulsifier and dispersant, helps the formation and stability of the emulsion and provides good dispersion properties.
Lauryl glucoside: as a surfactant, the emulsion has good emulsifying and dispersing properties, and is favorable for the stability of the emulsifier and the formation of emulsion.
Beeswax: as an emulsifier and thickener, helps the formation and stability of the emulsion and provides a certain viscosity.
Dodecylamine polyoxyethylene ether: as an emulsifier and dispersant, helps the formation and stability of the emulsion and provides good dispersion properties.
Vinyltrimethylsilane: as an antifoaming agent, the stability of bubbles can be destroyed, thereby reducing the foam in the emulsion.
Hydroxypropyl methylcellulose: as an emulsifier and thickener, helps the formation and stability of the emulsion and provides a certain viscosity.
The presence of these ingredients in the higher alcohol emulsion defoamer may help achieve a defoaming effect in seawater.
Compared with the prior art, the invention has the beneficial effects that:
1) The high-carbon alcohol emulsion defoamer prepared by the invention has the advantages of relatively simple production process and lower operation cost.
2) The components in the emulsion mixture are selected and the proportion is optimized, so that the high-carbon alcohol emulsion defoamer has good emulsion stability and defoaming performance.
3) The high-carbon alcohol emulsion defoamer can effectively reduce the generation and accumulation of foam in the sea water desalination process and improve the efficiency and stability of a membrane system.
Detailed Description
The main material sources are as follows:
cetostearyl alcohol polyoxyethylene ether: sea-safe petrochemical plant, jiangsu province, product number: 0-10.
Polyoxyethylene stearate: sea-safe petrochemical plant, jiangsu province, product number: emulsifier SG-6.
Polyethylene glycol oleate: jiangsu Haohong chemical Co., ltd., product number: 9004-96-0.
Polyethylene glycol fatty acid ester: sea An Guoyun chemical Co., ltd., product number: 019.
Lauryl glucoside: shandong Siyuan chemical Co., ltd., product number: SY-023.
Dodecylamine polyoxyethylene ether: mulberry chemical (Nantong) Co., ltd., model: 1201.
Beeswax: model of the Dongguang county Yongsheng wax product factory: 001.
Microcrystalline wax: dongguang county Hui constant wax product factory, product number: 0025.
Hydroxypropyl methylcellulose: shanghai Hunting chemical Co., ltd., model: 45.
Polyoxyethylene stearate: shanghai Min Ke New Material Co., ltd., product number: SG-60.
Polyethylene glycol oleate: shandong Usoxhlet chemical engineering Co., ltd., product number: s12796115.
Glycerol polyoxyethylene ether oleate: the model of Shanghai Donghui chemical technology Co., ltd.): XPO-4.
Polydimethyl siloxane: shandong Usoxhlet chemical engineering Co., ltd., product number: u31101145.
Polyacrylamide thickener: nanchang Xin super chemical industry Co., ltd., product number: product 14 polyacrylamide.
Example 1
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixer;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Example 2
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of polyoxyethylene stearate, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Example 3
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of polyethylene glycol oleate, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Example 4
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of stearic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixer;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Example 5
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of glycerol polyoxyethylene ether oleate, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixer;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Example 6
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of microcrystalline wax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixer;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Example 7
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of polydimethylsiloxane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Example 8
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of polyacrylamide thickener, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixer;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Comparative example 1
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, stirring at 200rpm until all components are uniformly mixed, and taking the mixture as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Comparative example 2
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Comparative example 3
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of dodecylamine polyoxyethylene ether, 0.5kg of vinyl trimethylsilane and 0.2kg of hydroxypropyl methylcellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to be used as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Comparative example 4
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.5kg of vinyl trimethyl silane and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, stirring at 200rpm until all components are uniformly mixed, and taking the mixture as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Comparative example 5
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether and 0.2kg of hydroxypropyl methyl cellulose, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to obtain an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Comparative example 6
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester, 1kg of cetostearyl alcohol polyoxyethylene ether, 1kg of palmitic acid, 0.5kg of lauryl glucoside, 0.3kg of beeswax, 0.3kg of dodecylamine polyoxyethylene ether and 0.5kg of vinyltrimethylsilane, heating to 80 ℃, and stirring at 200rpm until all components are uniformly mixed to obtain an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Comparative example 7
The production process of the high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process comprises the following steps:
step 1, mixing and heating 10kg of stearyl alcohol, 2kg of eicosanol and 2kg of octacosanol to 90 ℃ until the mixture is completely melted to be used as an oil phase;
Step 2, in 70kg of water, mixing 1kg of methyl isobutyl ketone, 1kg of polyethylene glycol fatty acid ester and 0.5kg of lauryl glucoside, heating to 80 ℃, and stirring at 200rpm until all the components are uniformly mixed to be used as an emulsifying mixture;
Step 3, adding the emulsifying mixture into an oil phase under the stirring state of 100rpm, keeping the temperature at 70 ℃, and emulsifying for 10min at 12000rpm by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
Test example 1
Salt water defoaming speed test:
And preparing the prepared high-carbon alcohol emulsion defoamer and water into a diluent containing 1wt% of the high-carbon alcohol emulsion defoamer at normal temperature and normal pressure for later use, putting a bubbler sand core into a 500mL measuring cylinder, adding 200mL of 35 per mill sodium chloride aqueous solution, adding sodium dodecyl sulfate with the mass of 1% of the sodium chloride aqueous solution, starting an air pump to bubble, stopping bubbling when the foam height rises to 500mL, injecting 25mL of the prepared diluent containing 1wt% of the high-carbon alcohol emulsion defoamer into the measuring cylinder, timing at the same time, taking defoaming time when the foam disappears, testing 5 times per group, and taking an average value. The test results are shown in Table 1.
TABLE 1 defoaming speed test results
Test example 2
High temperature resistance measurement
Putting the sand core of the bubbler into a 500mL measuring cylinder, adding 200mL of 35%o sodium chloride aqueous solution, adding sodium dodecyl sulfate with the mass of 1% of the sodium chloride aqueous solution, putting the measuring cylinder into an oil bath pot with the temperature of 100 ℃, starting an air pump to bubble, stopping bubbling when the foam height rises to 500mL, injecting 25mL of the prepared diluent containing 1wt% high-carbon alcohol emulsion defoamer into the measuring cylinder, timing at the same time, and taking defoaming time when the foam disappears, wherein each group of tests for 5 times, and taking an average value. Then, the rate of change of the defoaming time was calculated as follows:
defoaming time increase rate (%) = (defoaming time at 100 ℃ c-defoaming time at normal temperature and normal pressure)/defoaming time at normal temperature and normal pressure
The results were averaged and are shown in Table 2.
TABLE 2 high temperature resistance test results
From the test data in tables 1 and 2, it can be seen that the high-carbon alcohol emulsion defoamer prepared in example 1 of the present invention has good brine defoaming speed and high temperature resistance.
Example 1 compared to examples 2-3, the cetostearyl alcohol polyoxyethylene ether used in example 1 performed better than polyoxyethylene stearate and polyethylene glycol oleate in terms of brine defoaming speed and high temperature resistance, and cetostearyl alcohol polyoxyethylene ether had better brine defoaming speed, probably because of its stronger dispersibility and permeability in brine. Under the high salinity seawater environment, cetostearyl alcohol polyoxyethylene ether can diffuse to the surface of bubbles more quickly to form a film, and the stability of the bubbles is destroyed, so that the bubbles are promoted to be broken and dissipated. Due to its specific molecular structure and chemical nature. The cetyl stearyl alcohol polyoxyethylene ether has higher thermal stability and high temperature resistance, and can keep the defoaming performance under the high temperature condition. This results in better stability and durability in high temperature desalination processes.
The present invention uses palmitic acid for example 1 and stearic acid for example 4, which may have a better defoaming speed for brine due to its better affinity and solubility in brine. The palmitic acid molecules can form better interfacial activity between the water phase and the oil phase, and effectively reduce the surface tension. In salt water, palmitic acid can rapidly diffuse to the surface of bubbles to form a film, so that the stability of the bubbles is destroyed, and the bubbles are promoted to be broken and dissipated.
The example 1 of the invention adopts the dodecyl amine polyoxyethylene ether, compared with the example 5 adopts the glycerol polyoxyethylene ether oleate, has better brine defoaming speed and high temperature resistance, and the dodecyl amine polyoxyethylene ether has better brine defoaming speed, which is probably because of the capability of reducing the surface tension, and can help to destroy the stability of bubbles. Dodecylamine polyoxyethylene ether may have better high temperature resistance due to the specificity of its molecular structure and chemical properties. The dodecylamine polyoxyethylene ether has higher thermal stability and high temperature resistance, and can keep the defoaming performance under the high temperature condition.
The use of beeswax in example 1 of the present invention has a better defoaming speed in brine than the use of microcrystalline wax in example 6 because beeswax may have better dispersibility and interfacial activity. The beeswax molecules can form a film on the surface of the bubbles, so that the stability of the bubbles is reduced, and the bubbles are promoted to be broken and dissipated.
In the example 1, hydroxypropyl methyl cellulose is adopted, in the example 8, a polyacrylamide thickener is adopted, and the hydroxypropyl methyl cellulose contains hydroxyl functional groups in the molecule, wherein the hydroxyl groups can form hydrogen bonds with water molecules, so that the dispersibility of the hydroxypropyl methyl cellulose in an aqueous phase is enhanced, the quick dispersion of a high-carbon alcohol emulsion defoamer is promoted, and thus, the quick rupture and dissipation of bubbles are promoted.
Compared with comparative examples 1-7, cetostearyl alcohol polyoxyethylene ether, palmitic acid, beeswax, dodecylamine polyoxyethylene ether, vinyl trimethylsilane and hydroxypropyl methylcellulose may have a better defoaming speed of brine; cetostearyl alcohol polyoxyethylene ether, dodecylamine polyoxyethylene ether and vinyltrimethylsilane can maintain the defoaming performance under the high-temperature condition. The use of partially related substances may have better brine defoaming speed and high temperature resistance, mainly due to their lower surface tension, high interfacial activity, special chemical structure and thermal stability.
Claims (9)
1. The high-carbon alcohol emulsion defoamer for the membrane method sea water desalination process is characterized by comprising the following components in parts by weight: 8-12 parts of stearyl alcohol, 1-3 parts of eicosanol, 1-3 parts of octacosanol, 0.5-2 parts of methyl isobutyl ketone, 0.5-2 parts of polyethylene glycol fatty acid ester, 0.5-2 parts of cetostearyl alcohol polyoxyethylene ether, 0.5-2 parts of palmitic acid, 0.4-0.6 part of lauryl glucoside, 0.2-0.4 part of beeswax, 0.2-0.4 part of dodecylamine polyoxyethylene ether, 0.4-0.6 part of vinyl trimethyl silane, 0.1-0.3 part of hydroxypropyl methyl cellulose and 60-80 parts of water.
2. A production process for preparing the high-carbon alcohol emulsion defoamer for the membrane-process sea water desalination process according to claim 1, which is characterized by comprising the following steps:
Step 1, weighing raw materials according to parts by weight, mixing and heating stearyl alcohol, eicosanol and octacosanol until the raw materials are completely melted to be used as an oil phase;
Step 2, mixing methyl isobutyl ketone, polyethylene glycol fatty acid ester, cetostearyl alcohol polyoxyethylene ether, palmitic acid, lauryl glucoside, beeswax, dodecylamine polyoxyethylene ether, vinyl trimethyl silane and hydroxypropyl methyl cellulose in water, heating and heating, and stirring until all components are uniformly mixed to be used as an emulsifying mixture;
step 3, adding the emulsifying mixture into an oil phase under the stirring state, maintaining the temperature, and emulsifying by using high-speed emulsifying equipment; and cooling to normal temperature to obtain the uniform high-carbon alcohol emulsion defoamer.
3. The process according to claim 2, wherein the heating temperature in step 1 is 80-100 ℃.
4. The process according to claim 2, wherein the heating in step 2 is performed to a temperature of 70 to 90 ℃.
5. The process according to claim 2, wherein the stirring speed in step 2 is 100 to 300rpm.
6. The production process according to claim 2, wherein the stirring speed in the stirring state in the step 3 is 50 to 200rpm.
7. The production process according to claim 2, wherein the temperature in step 3 is maintained at 60 to 80 ℃.
8. The production process according to claim 2, wherein the emulsification rotation speed in the step 3 is 10000-15000 rpm.
9. The production process according to claim 2, wherein the emulsification time in the step3 is 5 to 20min.
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