CN108865534B - Cleaning agent and preparation method thereof - Google Patents
Cleaning agent and preparation method thereof Download PDFInfo
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- CN108865534B CN108865534B CN201810867125.2A CN201810867125A CN108865534B CN 108865534 B CN108865534 B CN 108865534B CN 201810867125 A CN201810867125 A CN 201810867125A CN 108865534 B CN108865534 B CN 108865534B
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- 239000012459 cleaning agent Substances 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 109
- 238000006243 chemical reaction Methods 0.000 claims abstract description 79
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003960 organic solvent Substances 0.000 claims abstract description 39
- 238000004140 cleaning Methods 0.000 claims abstract description 29
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 24
- 239000000057 synthetic resin Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 12
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 11
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 229920002401 polyacrylamide Polymers 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000003002 pH adjusting agent Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical class C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 229910021538 borax Inorganic materials 0.000 claims description 5
- 229920000136 polysorbate Polymers 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 5
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 claims description 5
- 125000004494 ethyl ester group Chemical group 0.000 claims description 4
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 4
- 229920000053 polysorbate 80 Polymers 0.000 claims description 4
- 229920001213 Polysorbate 20 Polymers 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 150000002170 ethers Chemical class 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 claims description 3
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 claims description 3
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 2
- -1 tween-40 Polymers 0.000 claims description 2
- 229920003169 water-soluble polymer Polymers 0.000 claims 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 12
- 239000010935 stainless steel Substances 0.000 abstract description 12
- 229920005989 resin Polymers 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 6
- 239000011152 fibreglass Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 238000011086 high cleaning Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 239000006185 dispersion Substances 0.000 description 11
- 238000005303 weighing Methods 0.000 description 11
- 238000002791 soaking Methods 0.000 description 10
- 230000007062 hydrolysis Effects 0.000 description 9
- 238000006460 hydrolysis reaction Methods 0.000 description 9
- 239000008399 tap water Substances 0.000 description 9
- 235000020679 tap water Nutrition 0.000 description 9
- 238000005406 washing Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical compound CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 241001415288 Coccidae Species 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/008—Polymeric surface-active agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—Salts
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2006—Monohydric alcohols
- C11D3/201—Monohydric alcohols linear
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2072—Aldehydes-ketones
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2093—Esters; Carbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3707—Polyethers, e.g. polyalkyleneoxides
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3719—Polyamides or polyimides
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/43—Solvents
-
- C11D2111/20—
Abstract
The invention relates to a cleaning agent and a preparation method thereof, wherein the cleaning agent is mainly prepared from the following raw materials in parts by weight: 10-30 parts of organic solvent, 3-5 parts of emulsifier, 0.5-3 parts of water-soluble high molecular polymer, 3-10 parts of pH regulator and 20-52 parts of water, wherein the organic solvent can be mutually dissolved with water. The cleaning agent has strong stripping capability and high cleaning efficiency on polymer scales, can quickly and thoroughly clean the synthetic resin reaction kettle, and is particularly suitable for cleaning resin storage tanks made of stainless steel synthetic resin reaction kettles, glass fiber reinforced plastics, plastics and the like.
Description
Technical Field
The invention relates to the technical field of cleaning agents, in particular to a cleaning agent suitable for cleaning a synthetic resin reaction kettle and a preparation method thereof.
Background
Synthetic resins are high molecular weight polymers formed by chemical reactions, which are usually carried out in a reaction kettle, and the reaction kettle is generally heated during the resin synthesis process. The heating of the reaction kettle is realized by heating the coil pipe on the outer wall of the reaction kettle or the jacket, and the heat is transferred to the kettle through the wall of the reaction kettle, so that the temperature of the wall of the reaction kettle is usually higher than that of the kettle, the speed of forming the high molecular polymer on the wall of the reaction kettle is higher than that of the kettle, and part of the polymer is easy to attach to the wall of the reaction kettle. As the pot life increases and the reaction temperature increases, the polymer adhered to the wall of the pot is from thin to thick, and the polymer is thicker and thicker, so that hard scales of the polymer which is difficult to dissolve and insoluble are formed. On one hand, polymer scale seriously affects the heat conduction and exchange of a synthetic resin reaction kettle, so that the speed of the subsequent resin synthesis reaction is reduced, the reaction time is prolonged, and the quality of the synthetic resin is deteriorated. On the other hand, when new resin is synthesized, trace impurities in polymer scale attached to the wall of the reaction kettle can fall off or leach out, enter the reaction kettle, pollute subsequent synthetic resin, and cause unstable and poor quality of the synthetic resin. Therefore, it is necessary to clean the reaction vessel to remove the polymer scale, so as to ensure heat transfer during the use of the reaction vessel and to prevent the synthetic resin from being contaminated by the polymer scale.
The traditional cleaning method comprises the following steps: soaking the mixture in organic solvent under heating condition, discharging the organic solvent after a certain period of time, flushing the mixture with a high-pressure water gun, and finally putting the mixture into a reaction kettle by workers to remove stubborn polymer scales on the wall of the reaction kettle. The reaction kettle cleaning method is time-consuming (needs heating and soaking for several hours), troublesome (high-pressure water washing cannot thoroughly strip clean polymer scales, needs manual kettle cleaning), energy-consuming (the kettle is heated, organic solvent after the kettle is soaked is recycled and distilled), and easy to cause safety accidents. Therefore, the cleaning of the stainless steel reaction kettle for chemical synthetic resin is always a difficult problem for synthetic resin manufacturers.
Disclosure of Invention
Therefore, it is necessary to provide a cleaning agent which has a strong ability to peel off polymer scale from the wall of a reaction vessel, has a high cleaning efficiency, and can rapidly clean a synthetic resin reaction vessel, in order to solve the problem of difficulty in cleaning the synthetic resin reaction vessel.
A cleaning agent is mainly prepared from the following raw materials in parts by weight: 10-30 parts of organic solvent, 3-5 parts of emulsifier, 0.5-3 parts of water-soluble high molecular polymer, 3-10 parts of pH regulator and 20-52 parts of water, wherein the organic solvent can be mutually dissolved with water.
The traditional cleaning agent for the reaction kettle is usually organic solvent such as toluene, xylene and acetone, and has single function. The principle of the organic solvent cleaning reaction kettle is as follows: the organic solvent swells the surface of insoluble or slightly soluble polymer scale under heating condition, the hard scale is converted into soft scale, and then the polymer is separated from the wall of the reaction kettle by washing with high-pressure water. However, the synthetic resin is a macromolecular compound generated by chemical polymerization of a small molecular compound, once the polymer scale of the macromolecular compound is formed, the polymer scale is difficult to be dissolved by a solvent, and the polymer scale cannot be completely dissolved only by heating and soaking organic solvents such as toluene, xylene and acetone, so that after the polymer scale is heated and soaked by the organic solvent, the polymer scale cannot be washed away from the wall of the reaction kettle by using high-pressure water, the polymer scale still adheres to the wall of the reaction kettle tightly, and only when workers go down to the reaction kettle and shovel the scale adhered to the wall of the reaction kettle of the synthetic resin by using tools such as a shovel, the scale on the wall of the reaction kettle can be finally removed completely.
In order to solve the problems of difficult cleaning of a synthetic resin stainless steel reaction kettle and time, trouble and energy consumption of the traditional cleaning method, the invention combines the cleaning practice of the synthetic resin stainless steel reaction kettle, introduces the action principle of emulsification and drag reduction strong rheological fluid, directly pays out the technical idea of peeling off polymer scales on the wall of the reaction kettle in a sheet mode through the coordination action of chemistry and physics, and develops and obtains the cleaning agent after a large amount of creative labor and tests of cleaning a plurality of stainless steel reaction kettles.
The cleaning agent is prepared by dissolving an organic solvent which can be mutually dissolved with water, a water-soluble high molecular polymer, an emulsifier and a pH regulator in a main solvent of water; the organic solvent which is mutually soluble in water can play a role in dissolving and swelling polymer scales, the emulsifier can emulsify stubborn colloidal particles in the polymer scales and enable the stubborn colloidal particles to be small, the water-soluble high molecular polymer enables the cleaning agent to have rheological property and resistance reduction property and can strip the polymer scales from the wall of the reaction kettle, and the pH value of the cleaning agent is adjusted by the pH adjusting agent so that the polymer stubborn scales are easy to emulsify and strip.
The cleaning agent is used for soaking the synthetic resin reaction kettle, the organic solvent, the emulsifier and the water-soluble high molecular polymer in the cleaning agent can perform synergistic action to swell, emulsify and dissolve part of polymer scale, the cleaning agent further permeates into the polymer scale, and the polymer scale is peeled off in a slicing way under the action of drag reduction and strong rheological action of the water-soluble high molecular polymer. After the cleaning agent is discharged, the polymer on the wall of the reaction kettle is directly cleaned by high-pressure water washing, manual kettle cleaning is not needed, and meanwhile, the time, the water and the energy can be saved, and the cleaning agent can be directly recycled after being filtered, so that the kettle washing cost is saved. The cleaning agent can be used for cleaning a stainless steel synthetic resin reaction kettle, and is also suitable for cleaning resin storage tanks made of glass fiber reinforced plastics, plastics and the like.
In one embodiment, the organic solvent is 15-30 parts, the emulsifier is 3-4 parts, the water-soluble high molecular polymer is 0.5-1 part, the pH regulator is 3-6 parts, and the water is 30-50 parts.
In one embodiment, the water-soluble high molecular polymer is at least one selected from the group consisting of polyvinyl alcohol and polyacrylamide.
In one embodiment, the molecular weight of the polyacrylamide is 600-2000 ten thousand.
In one embodiment, the organic solvent is selected from at least one of ethanol, acetone, ethyl ester, and methyl ethyl ketone.
In one embodiment, the emulsifier is selected from at least one of tween series emulsifiers and isomeric tridecanol polyoxyethylene ether series emulsifiers.
Further, the ethylene oxide addition number of the isomeric tridecanol polyoxyethylene ether is 10 or 20.
In one embodiment, the pH adjusting agent is selected from at least one of sodium carbonate, sodium bicarbonate, sodium hydroxide, potassium hydroxide, and sodium borate.
In one embodiment, the pH value of the cleaning agent is 10-12.
The invention also provides a preparation method of the cleaning agent, which comprises the following steps:
adding the emulsifier and the water-soluble high molecular polymer into the water according to the raw material formula of the cleaning agent, and stirring until the emulsifier and the water-soluble high molecular polymer are dissolved to obtain a first mixture;
adding the pH regulator into the first mixture, and continuously stirring until the mixture is uniformly mixed to obtain a second mixture;
and adding the organic solvent into the second mixture, and uniformly mixing to obtain the cleaning agent.
The preparation method is simple and safe to operate, the required equipment is simple, the obtained product is stable in quality, and industrial production is easy to realize.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The cleaning agent provided by the embodiment of the invention is mainly prepared from the following raw materials in parts by weight: 10-30 parts of organic solvent, 3-5 parts of emulsifier, 0.5-3 parts of water-soluble high molecular polymer, 3-10 parts of pH regulator and 20-52 parts of water, wherein the organic solvent and the water can be mutually dissolved.
The cleaning agent is prepared by dissolving an organic solvent which can be mutually dissolved with water, a water-soluble high molecular polymer, an emulsifier and a pH regulator in a main solvent of water; the organic solvent which is mutually soluble in water can play a role in dissolving and swelling polymer scales, the emulsifier can emulsify stubborn colloidal particles in the polymer scales and enable the stubborn colloidal particles to be small, the water-soluble high molecular polymer enables the cleaning agent to have rheological property and resistance reduction property and can strip the polymer scales from the wall of the reaction kettle, and the pH value of the cleaning agent is adjusted by the pH adjusting agent so that the polymer stubborn scales are easy to emulsify and strip.
The cleaning agent is used for soaking the synthetic resin reaction kettle, the organic solvent, the emulsifier and the water-soluble high molecular polymer in the cleaning agent can perform synergistic action to swell, emulsify and dissolve part of polymer scale, the cleaning agent further permeates into the polymer scale, and the polymer scale can be peeled off in a large scale under the action of drag reduction and strong rheological action of the water-soluble high molecular polymer. After the cleaning agent is discharged, the polymer on the wall of the reaction kettle is directly cleaned by high-pressure water washing without manual cleaning, and meanwhile, the time, the water and the energy can be saved, and the cleaning agent can be directly recycled after being filtered, so that the kettle washing cost is saved. The cleaning agent can be used for cleaning a stainless steel synthetic resin reaction kettle, and is also suitable for cleaning resin storage tanks made of glass fiber reinforced plastics, plastics and the like.
In one embodiment, the food is mainly prepared from the following raw materials in parts by weight: 15-30 parts of organic solvent, 3-4 parts of emulsifier, 0.5-1 part of water-soluble high molecular polymer, 3-6 parts of pH regulator and 30-50 parts of water.
In one embodiment, the water-soluble high molecular polymer is at least one selected from the group consisting of polyvinyl alcohol and polyacrylamide.
It is understood that polyvinyl alcohol can be classified into three types of products, i.e., super hydrolysis, full hydrolysis and partial hydrolysis, according to the degree of hydrolysis. The super hydrolysis degree is 99-100%, the full hydrolysis degree is 92-98%, and the partial hydrolysis degree is 86-89%, 73-78% and below 66%. The degree of hydrolysis of the polyvinyl alcohol is not particularly limited in the present invention, that is, polyvinyl alcohols having various degrees of hydrolysis can be used.
Furthermore, the molecular weight of the polyacrylamide is between 600 and 2000 ten thousand. It is to be understood that the ionic type of the polyacrylamide is not particularly limited in the present invention, as long as it is a polyacrylamide having various anionic, cationic and nonionic molecular weights in the range of 600 to 2000 ten thousand.
In one embodiment, the organic solvent is selected from at least one of ethanol, acetone, ethyl ester, and methyl ethyl ketone (also known as methyl ethyl ketone).
In one embodiment, the emulsifier is selected from at least one of a tween series emulsifier and an isomeric tridecanol polyoxyethylene ether system emulsifier.
Specifically, the Tween series emulsifier comprises Tween-20, Tween-40, Tween-60, Tween-80, etc.
Further, the ethylene oxide addition number of the isomeric tridecanol polyoxyethylene ether is 10 or 20.
The molecular formula of isomeric tridecanol polyoxyethylene ether is C13H27O(CH2CH2O)nH, wherein n is the addition number of Ethylene Oxide (EO), and the isomeric tridecanol polyoxyethylene ether series emulsifiers comprise 1303, 1305, 1306, 1307, 1308, 1310, 1312, 1315, 1320 and the like different products according to the difference of n. Preferably, the isomeric tridecanol polyoxyethylene ethers used in the present invention are 1310 and 1320, which have excellent emulsifying, wetting and penetrating properties.
In one embodiment, the pH adjusting agent is selected from at least one of sodium carbonate, sodium bicarbonate, sodium hydroxide, potassium hydroxide, and sodium borate. It is understood that the pH adjusting agent used in the present invention can provide a pH suitable for the cleaning agent to emulsify the polymer scale and can promote peeling of the polymer scale.
In one embodiment, the water may be tap water, distilled water, or deionized water.
In one embodiment, the pH of the cleaning agent is 10-12.
In one embodiment, the viscosity of the cleaning agent is 8000 centipoise to 12000 centipoise.
It can be understood that the viscosity range of the cleaning agent is 8000-12000 centipoises, which can ensure the adhesion and the retention time of the cleaning agent on the wall of the reaction kettle, so that the cleaning agent can fully permeate into the polymer scale on the wall of the reaction kettle, and the polymer scale after being dissolved and softened can be stripped from the wall of the reaction kettle by utilizing the rheological property of the cleaning agent.
Another embodiment of the present invention provides a method for preparing the cleaning agent, which specifically comprises the following steps:
according to the raw material formula of the cleaning agent, adding an emulsifier and a water-soluble high molecular polymer into water, and stirring until the emulsifier and the water-soluble high molecular polymer are dissolved to obtain a first mixture;
adding a pH regulator into the first mixture, and continuously stirring until the mixture is uniformly mixed to obtain a second mixture;
and adding an organic solvent into the second mixture, and uniformly mixing to obtain the cleaning agent.
Therefore, the sequence of adding the components into the water is strictly controlled, and the components can be fully dissolved and uniformly mixed, so that the influence on the using effect of the cleaning agent due to insolubility or insolubility of a certain component is avoided.
It can be understood that the stirring step in the preparation process of the cleaning agent adopts low-speed stirring to comprehensively stir the materials, so that the materials are fully and efficiently dispersed.
The preparation method is simple and safe to operate, the required equipment is simple, the obtained product is stable in quality, and industrial production is easy to realize.
The following are specific examples
The isomeric tridecanol polyoxyethylene ether emulsifier used in the invention is purchased from Sasol, polyacrylamide is purchased from Shandong's same-industry chemical company, the molecular weight is between 600 and 2000 ten thousand, water is distilled water, and other reagents are in common market;
the viscosity of the cleaning agent was measured with an NDJ-1 rotational viscometer, and the pH was measured with an acidimeter.
Example 1
1) The formula of the cleaning agent comprises the following components: 35 parts of water, 30 parts of organic solvent, 3 parts of emulsifier, 0.8 part of water-soluble high molecular polymer and 6 parts of pH regulator.
2) The preparation method comprises the following steps:
accurately weighing 35.0 kg of tap water, putting the tap water into a stainless steel dispersion cylinder, weighing 3.0 kg of emulsifier Tween-20 under the condition of stirring (butterfly stirring), adding 0.8 kg of water-soluble high molecular polymer PVA-1788 into the dispersion cylinder, stirring at a low speed until the emulsifier and the high molecular polymer are completely dissolved, adding 6.0 kg of pH regulator sodium carbonate, stirring at a low speed for dissolving, adding 30.0 kg of ethyl ester organic solvent, stirring uniformly and packaging for later use.
The resulting cleaner was a translucent viscous liquid with a viscosity of 11000 centipoise and a pH of 10.8.
Example 2
1) The formula of the cleaning agent comprises the following components: 50 parts of water, 25 parts of organic solvent, 3.5 parts of emulsifier, 0.5 part of water-soluble high molecular polymer and 3 parts of pH regulator.
2) The preparation method comprises the following steps:
accurately weighing 50.0 kg of tap water, putting the tap water into a stainless steel dispersion cylinder, weighing 3.5 kg of isomeric trideceth-yl ether (E-1320) as an emulsifier under the stirring condition, adding the isomeric trideceth-yl ether into the dispersion cylinder, weighing 0.5 kg of water-soluble high-molecular polymer polyacrylamide into the dispersion cylinder, stirring at a low speed until the emulsifier and the high-molecular polymer are completely dissolved, adding 3.0 kg of sodium hydroxide pH regulator, stirring at a low speed for dissolving, adding 25.0 kg of acetone organic solvent, stirring uniformly and packaging for later use.
The resulting rinse was a translucent viscous liquid with a measured viscosity of 10500 centipoise and a pH of 11.6.
Example 3
1) The formula of the cleaning agent comprises the following components: 20 parts of water, 30 parts of organic solvent, 5 parts of emulsifier, 3 parts of water-soluble high molecular polymer and 3 parts of pH regulator.
2) The preparation method comprises the following steps:
accurately weighing 20.0 kg of tap water, putting the tap water into a stainless steel dispersion cylinder, weighing 5.0 kg of emulsifier isotridecanol polyoxyethylene ether (E-1310), adding the emulsifier isotridecanol polyoxyethylene ether into the dispersion cylinder under the stirring condition, weighing 3 kg of water-soluble high polymer PVA-2099, adding the water-soluble high polymer PVA-2099 into the dispersion cylinder, stirring at a low speed until the emulsifier and the high polymer are completely dissolved, adding 6.0 kg of pH regulator sodium borate, stirring at a low speed for dissolving, finally adding 30.0 kg of ethanol organic solvent, stirring uniformly and packaging for later use.
The resulting rinse was a translucent viscous liquid with a measured viscosity of 11900 cps and a pH of 11.8.
Example 4
1) The formula of the cleaning agent comprises the following components: 40 parts of water, 10 parts of organic solvent, 3 parts of emulsifier, 2 parts of water-soluble high-molecular polymer and 4 parts of pH regulator.
2) The preparation method comprises the following steps:
accurately weighing 40.0 kg of tap water, putting the tap water into a stainless steel dispersion cylinder, weighing 3.0 kg of emulsifier Tween-80, adding the emulsifier Tween-80 into the dispersion cylinder under the stirring condition, weighing 2 kg of water-soluble high polymer PVA-1788 into the dispersion cylinder, stirring at a low speed until the emulsifier and the high polymer are completely dissolved, adding 4.0 kg of pH regulator sodium carbonate, stirring at a low speed for dissolving, finally adding 10.0 kg of acetone organic solvent, stirring uniformly and packaging for later use.
The resulting rinse was a translucent viscous liquid with a viscosity of 10800 centipoise and a pH of 10.2.
Comparative example 1
Comparative example 1 is substantially the same as example 1 except that the formulation of comparative example 1 contains no water-soluble high molecular polymer.
Comparative example 2
Comparative example 2 is substantially the same as example 1 except that the formulation of comparative example 1 has 1 part by weight of emulsifier.
Comparative example 3
Comparative example 3 is substantially the same as example 1 except that the formulation of comparative example 3 has 1 part by weight of the pH adjuster and the resulting cleaning agent has a pH of 7.5.
Example 5 cleaning effect test of cleaning agent
The cleaning agents of examples 1 to 4 and comparative examples 1 to 3 were used to clean the synthetic resin reaction vessels, respectively, and the synthetic resin reaction vessels were used in the same conditions, and polymer scale was tightly adhered to the walls of the reaction vessels.
The cleaning method comprises the following steps: checking whether a valve at the bottom of a reaction kettle to be cleaned is ensured to be in a closed state, injecting a prepared cleaning agent into the reaction kettle from a kettle opening, according to the volume of the reaction kettle, ensuring that the injection amount of the cleaning agent of the reaction kettle accounts for 2/3 of the volume of the reaction kettle, allowing the cleaning agent to soak the reaction kettle, starting a stirrer of the reaction kettle to stir at a low speed (according to the scaling condition of polymer scale in the kettle, heating as appropriate), observing the change condition of the polymer scale in the stirring process, after the polymer scale on the wall of the reaction kettle is basically separated, opening a low valve of the reaction kettle, discharging the cleaning agent of the reaction kettle, flushing the inner wall of the reaction kettle with high-pressure water, flushing the polymer scale remained on the wall of the kettle and the cleaning agent of the reaction kettle cleanly, checking the pH value of the kettle washing water with pH test paper, when the pH value of the kettle washing water is 7, indicating that the cleaning agent remained in the reaction, and checking the cleaning effect of the kettle wall.
As a result: after the cleaning agent of the embodiment 1-4 is used and soaked and wetted for 30-60 min, polymer scales on the wall of the kettle swell, soften, dissolve and partially emulsify, under the synergistic effect of ultra-slip resistance reduction and strong rheology of polymer components in the cleaning agent, the kettle wall polymer scale begins to peel off from the wall of the reaction kettle and enters the kettle after being continuously soaked for 70-90 min, the kettle wall polymer scale is continuously soaked for 2h, the polymer scales on the wall of the reaction kettle basically separate, and the kettle wall is checked to be smooth and clean as new after being washed by high-pressure water.
In addition, the cleaning agent discharged from examples 1 to 4 was recovered after being filtered with an 80-mesh filter screen, and was used again to clean the reaction vessel, and still had a good cleaning effect, and the removal rate of the polymer scale reached about 88% (removal rate ═ removal rate (area covered by polymer scale on the wall of the reaction vessel before cleaning-area covered by polymer scale on the wall of the reaction vessel after cleaning)/area covered by polymer scale on the wall of the reaction vessel before cleaning).
The cleaning agent of comparative example 1, after soaking for 90min, polymer scale swelled, softened and partially dissolved, and continued soaking for 4h, the polymer scale on the reactor wall was not separated significantly, after washing with high pressure water, polymer scale was still adhered tightly on the reactor wall, the polymer scale was not cleaned completely, and the polymer scale removal rate was 72%.
The cleaning agent of comparative example 2, after soaking for 100min, polymer scale swelled, softened and partially dissolved, emulsified, and continued soaking for 4h, the polymer scale on the wall of the reaction vessel did not separate significantly, after rinsing with high pressure water, polymer scale was still adhered tightly on the wall of the reaction vessel, the cleaning was not thorough, and the polymer scale removal rate was 80%.
The cleaning agent of the comparative example 3 is soaked for 100min, the polymer scale swells and softens, and is partially dissolved and emulsified, the soaking is continued for 4h, the polymer scale on the wall of the reaction kettle is not obviously separated, after the cleaning agent is washed by high-pressure water, the polymer scale still adheres to the wall of the kettle, the cleaning is not thorough, and the polymer scale removal rate is 83 percent.
And (4) conclusion: after the cleaning agent disclosed by the embodiment of the invention is used for cleaning the reaction kettle, polymer stubborn scales on the wall of the reaction kettle are thoroughly cleaned, and the inner wall of the cleaned stainless steel reaction kettle is free from polymer scales and bright as new, so that the cleaning agent disclosed by the invention can effectively and thoroughly clean the polymer scales in the reaction kettle. And the cleaning agent of the embodiment of the invention can be recycled for cleaning the reaction kettle again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The cleaning agent is characterized by being prepared from the following raw materials in parts by weight: 10-30 parts of organic solvent, 3-5 parts of emulsifier, 0.5-3 parts of water-soluble high molecular polymer, 3-10 parts of pH regulator and 20-52 parts of water, wherein the organic solvent and the water are mutually soluble; the pH value of the cleaning agent is 10-12;
the viscosity of the cleaning agent is 8000-12000 centipoises;
the water-soluble high molecular polymer is selected from at least one of polyvinyl alcohol and polyacrylamide;
the emulsifier is selected from at least one of Tween series emulsifier and isomeric tridecanol polyoxyethylene ether series emulsifier;
the cleaning agent is used for cleaning a reaction kettle for synthetic resin.
2. The cleaning agent according to claim 1, wherein the organic solvent is 15 to 30 parts, the emulsifier is 3 to 4 parts, the water-soluble polymer is 0.5 to 1 part, the pH adjuster is 3 to 6 parts, and the water is 30 to 50 parts.
3. The cleaning agent according to claim 1, wherein the water-soluble polymer is PVA-1788.
4. The cleaning agent according to claim 3, wherein the molecular weight of the polyacrylamide is 600 to 2000 ten thousand.
5. The cleaning agent according to claim 1, wherein the organic solvent is at least one selected from the group consisting of ethanol, acetone, ethyl ester and methyl ethyl ketone.
6. The cleaning agent as claimed in claim 1, wherein the number of ethylene oxide adducts in the isomeric tridecanol polyoxyethylene ether is 10 or 20.
7. The cleaning agent according to claim 1, wherein the pH adjuster is at least one selected from the group consisting of sodium carbonate, sodium bicarbonate, sodium hydroxide, potassium hydroxide and sodium borate.
8. The cleaning agent according to claim 1, wherein the pH adjuster is sodium borate.
9. The cleaning agent according to claim 1, wherein the tween series emulsifier comprises at least one of tween-20, tween-40, tween-60 and tween-80.
10. A method for preparing the cleaning agent according to any one of claims 1 to 9, comprising the steps of:
adding the emulsifier and the water-soluble high molecular polymer into the water according to the raw material formula of the cleaning agent, and stirring until the emulsifier and the water-soluble high molecular polymer are dissolved to obtain a first mixture;
adding the pH regulator into the first mixture, and continuously stirring until the mixture is uniformly mixed to obtain a second mixture;
and adding the organic solvent into the second mixture, and uniformly mixing to obtain the cleaning agent.
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