CN111530129A - Special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide and preparation method thereof - Google Patents
Special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide and preparation method thereof Download PDFInfo
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- CN111530129A CN111530129A CN202010256247.5A CN202010256247A CN111530129A CN 111530129 A CN111530129 A CN 111530129A CN 202010256247 A CN202010256247 A CN 202010256247A CN 111530129 A CN111530129 A CN 111530129A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 46
- 239000002518 antifoaming agent Substances 0.000 title claims abstract description 40
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 title claims abstract description 20
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 17
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000004327 boric acid Substances 0.000 title claims abstract description 16
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 107
- 229920000570 polyether Polymers 0.000 claims abstract description 107
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims abstract description 47
- 150000002009 diols Chemical class 0.000 claims abstract description 39
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 33
- 150000002148 esters Chemical class 0.000 claims abstract description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 10
- 239000000194 fatty acid Substances 0.000 claims abstract description 10
- 229930195729 fatty acid Natural products 0.000 claims abstract description 10
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 9
- FLIACVVOZYBSBS-UHFFFAOYSA-N Methyl palmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC FLIACVVOZYBSBS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920002545 silicone oil Polymers 0.000 claims abstract description 5
- QYDYPVFESGNLHU-UHFFFAOYSA-N elaidic acid methyl ester Natural products CCCCCCCCC=CCCCCCCCC(=O)OC QYDYPVFESGNLHU-UHFFFAOYSA-N 0.000 claims abstract description 4
- QYDYPVFESGNLHU-KHPPLWFESA-N methyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 claims abstract description 4
- 229940073769 methyl oleate Drugs 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims abstract description 4
- 235000019198 oils Nutrition 0.000 claims abstract description 4
- 235000012424 soybean oil Nutrition 0.000 claims abstract description 4
- 239000003549 soybean oil Substances 0.000 claims abstract description 4
- 235000020238 sunflower seed Nutrition 0.000 claims abstract description 4
- 239000003784 tall oil Substances 0.000 claims abstract description 4
- 235000021314 Palmitic acid Nutrition 0.000 claims abstract description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229920000136 polysorbate Polymers 0.000 claims abstract description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 48
- 238000006243 chemical reaction Methods 0.000 claims description 41
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 31
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 25
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 16
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 16
- 230000032683 aging Effects 0.000 claims description 16
- 235000006408 oxalic acid Nutrition 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 11
- 239000013530 defoamer Substances 0.000 claims description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 abstract description 26
- 239000002253 acid Substances 0.000 abstract description 11
- 230000005764 inhibitory process Effects 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000543 intermediate Substances 0.000 description 21
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 14
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 12
- 230000010933 acylation Effects 0.000 description 12
- 238000005917 acylation reaction Methods 0.000 description 12
- 239000002131 composite material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000000605 extraction Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000011085 pressure filtration Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229920000137 polyphosphoric acid Polymers 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000009435 amidation Effects 0.000 description 2
- 238000007112 amidation reaction Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- 238000004042 decolorization Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 2
- 229920000053 polysorbate 80 Polymers 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 description 1
- MKKVKFWHNPAATH-UHFFFAOYSA-N [C].N Chemical compound [C].N MKKVKFWHNPAATH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
-
- 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
- B01D19/0431—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance containing aromatic rings
- B01D19/0436—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance containing aromatic rings with substituted groups
- B01D19/0445—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance containing aromatic rings with substituted groups which contain N-atoms
-
- 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
- B01D19/0431—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance containing aromatic rings
- B01D19/0436—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance containing aromatic rings with substituted groups
- B01D19/0454—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance containing aromatic rings with substituted groups which contain S-atoms
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/46—Preparation involving solvent-solvent extraction
- C01B25/468—Preparation involving solvent-solvent extraction the extraction being performed on the reaction slurry itself, i.e. without separating the acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
- C01B35/10—Compounds containing boron and oxygen
- C01B35/1045—Oxyacids
- C01B35/1054—Orthoboric acid
- C01B35/1063—Preparation from boron ores or borates using acids or salts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
- C08G65/2609—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Polyethers (AREA)
Abstract
The invention belongs to the field of chemical industry, and particularly relates to a special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide and a preparation method thereof, wherein the special defoaming agent comprises the following raw materials in parts by weight: 30-60 parts of fatty acid or ester, 1-5 parts of acylating agent, 5-10 parts of solid dispersant, 15-40 parts of polyether diol, 15-40 parts of polyether triol and 8-20 parts of emulsifier; the fatty acid or ester comprises tall oil, palmitic acid, soybean oil, sunflower seed oil, methyl oleate, methyl palmitate; the molecular weight of the dihydric alcohol is 2000-3000, and the molecular weight of the polyether trihydric alcohol is 4000-6000; the compound emulsifier comprises one or more of TX, BY, EL, span, Tween and polyether modified silicone oil; the defoaming agent has the characteristics of high defoaming speed, strong defoaming capability and long foam inhibition time; has special performance in high temperature and strong acid system.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide and a preparation method thereof.
Background
The existing wet-process phosphoric acid extraction production process comprises the following steps: the qualified slurry after grinding, screening, flotation and thickening is sent into an extraction tank by a delivery pump, concentrated sulfuric acid is added for extraction reaction, then the mixture is sent to a belt filter or a rotary disc filter by the pump for filtering and flushing to obtain a required dilute phosphoric acid product, and organic matters carried by phosphate ores or flotation agents remained in the ore pulp react with sulfuric acid to generate a large amount of carbon dioxide gas, so that the extracted slurry generates a large amount of viscous foam, the liquid level of the extraction tank is virtual high, a large amount of stable foam is squeezed to occupy and block a ventilation channel at the upper part of the extraction tank, tail gas suction is difficult, the working condition of a tail flushing system is worsened, the extraction process is operated at positive pressure, the extracted fluorine-containing and acidic gases overflow, the fluorine recovery rate is reduced, the environment is polluted, production field equipment is corroded, and; bringing great difficulty and economic loss to a wet-process phosphoric acid production device.
In the titanium dioxide production process, the acidolysis reaction is usually carried out by an intermittent operation by using an acidolysis tank capable of containing 30-40 t of reactants. The vigorous exothermic reaction typically lasts about 30min, and the porous cake solid is then cooled for about 3 h. Most of the air pollution generated by the sulfuric acid process comes from acidolysis. During the reaction, a large amount of sulfur oxides, acid mist and entrained unreacted raw material particles are released in a short time. The two-phase method process adopts 65-80 percent of sulfuric acid, the reaction temperature is 150-; a large amount of bubbles are generated in the process, and if the bubbles cannot be even and quickly eliminated, the quality of the titanium dioxide at the later stage is seriously influenced;
the production process of boric acid, a borax sulfuric acid neutralization method: dissolving borax into a solution with a relative density of 30-32 DEG Be, filtering impurities, placing the solution into an acidolysis tank, and adding equivalent sulfuric acid at 90 ℃ to enable the solution to react when the pH is 2-3. And cooling, crystallizing, separating and drying the reaction finished liquid to obtain a boric acid finished product. The carbon-ammonia method mixes the roasted boron mineral powder with ammonium bicarbonate, heats the material in a leaching kettle to 140 ℃, reacts for about 4 hours under the pressure of 1.5-2.0 Mpa, discharges residual gas, recovers ammonia through an ammonia absorption tower, and discharges the material when the temperature is reduced to 110 ℃. In both processes, a large amount of foam is generated in the reaction process, and if the foam cannot be eliminated in time, adverse effects are generated on the subsequent process, so that the equipment is seriously corroded.
In order to reduce the influence of foam on production, defoaming treatment by adding a defoaming agent is often required. However, the existing defoaming agent basically cannot perform a defoaming effect in a high-temperature and strong-acid environment, and even the situation that oxidation by sulfuric acid aggravates foam generation occurs is also occurred.
Disclosure of Invention
In order to solve the problems, the invention discloses a special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide, which is used for eliminating foam generated in the processing process of phosphoric acid, boric acid and titanium dioxide and stabilizing the production process of a device.
In order to achieve the above purpose, the invention provides the following technical scheme:
the special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide comprises the following raw materials in parts by weight: 30-60 parts of fatty acid or ester, 1-5 parts of acylating agent, 5-10 parts of solid dispersant, 15-40 parts of polyether diol, 15-40 parts of polyether triol and 8-20 parts of emulsifier; the fatty acid or ester comprises tall oil, palmitic acid, soybean oil, sunflower seed oil, methyl oleate, methyl palmitate; the molecular weight of the dihydric alcohol is 2000-3000, and the molecular weight of the polyether trihydric alcohol is 4000-6000; the emulsifier comprises one or more of TX, BY, EL, span, Tween and polyether modified silicone oil.
The invention also discloses a preparation method of the special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide, wherein amidated intermediates, polyether dihydric alcohol, polyether trihydric alcohol and the like are added into a reaction kettle, the temperature is increased to 80-85 ℃, and the temperature is kept for 2 hours; after the heat preservation is finished, cooling; and cooling to 40-45 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
Wherein, fatty acid or ester, acylating agent and solid dispersant form amidation intermediate, and the preparation method of amidation intermediate is as follows: 30-50 parts of fatty acid or ester, 1-3 parts of acylating agent, 5-10 parts of solid dispersing agent and 0.5-1 part of p-toluenesulfonic acid are added into a reaction kettle, stirred and heated to 180-210 ℃, vacuumized to-0.1-0.3 MPa and reacted for 6-8 hours.
The preparation method of the polyether diol comprises the following steps: adding 20 parts by weight of ethylene glycol, 80 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 30 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of oxalic acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by a plate-and-frame filter press to obtain the polyether diol.
The preparation method of the polyether triol comprises the following steps: adding 25 parts by weight of glycerol, 80 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then adding 40 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into crude polyether triol for neutralization at the temperature of 130 ℃, adding 1 part by weight of active carbon for decolorization, and performing filter pressing under the pressure of 0.2MPa by a plate-and-frame filter press after decolorization to obtain polyether triol
The invention has the following beneficial effects: the defoaming agent has the characteristics of high defoaming speed, strong defoaming capability and long foam inhibition time; has special performance in high temperature and strong acid system.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides an acid-resistant and high-temperature processing special defoaming agent, which comprises the following raw materials in parts by weight: 50 parts of acylation intermediate, 25 parts of polyether diol, 30 parts of polyether triol and 10 parts of composite emulsifier.
The preparation method of the defoaming agent comprises the following steps: adding the amidated intermediate, polyether diol, polyether triol and the like into a reaction kettle, heating to about 80 ℃, and preserving heat for 2 hours; after the heat preservation is finished, cooling; and cooling to about 40 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
The preparation method of the acylation intermediate comprises the following steps: 30 parts of tall oil, 2 parts of 4-dimethylaminopyridine, 5 parts of fumed silica and 0.5 part of p-toluenesulfonic acid are added into a reaction kettle, stirred and heated to 180 ℃, and then vacuumized to about-0.1 MPa for about 6 reactions.
The preparation method of the polyether diol comprises the following steps: adding 20 parts by weight of ethylene glycol, 80 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 30 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of oxalic acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by a plate-and-frame filter press to obtain the polyether diol.
The preparation method of the polyether triol comprises the following steps: adding 25 parts by weight of glycerol, 80 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then adding 40 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into the crude polyether triol to neutralize at 130 ℃, adding 1 part by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by using a plate-and-frame filter press to obtain the polyether triol.
The preparation method of the emulsifier comprises the following steps: 10 parts of span 60 and 20 parts of oily polyether modified silicone oil by weight are added to obtain the composite emulsifier.
Example 2
The embodiment provides an acid-resistant and high-temperature processing special defoaming agent, which comprises the following raw materials in parts by weight: 55 parts of acylation intermediate, 30 parts of polyether diol, 20 parts of polyether triol and 15 parts of composite emulsifier; the preparation method of the defoaming agent comprises the following steps: adding the amidated intermediate, polyether diol, polyether triol and the like into a reaction kettle, heating to about 82 ℃, and preserving heat for 2 hours; after the heat preservation is finished, cooling; and cooling to about 43 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
The preparation method of the acylation intermediate comprises the following steps: adding 50 parts of palm oil, 1 part of 4-dimethylaminopyridine, 3 parts of fumed silica and 0.5-1 part of concentrated sulfuric acid into a reaction kettle, stirring and heating to 190 ℃, vacuumizing to 0.3 MPa, and reacting for 11 hours;
the preparation method of the polyether diol comprises the following steps: adding 10 parts by weight of propylene glycol, 100 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 40 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of citric acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing pressure filtration by using a plate-and-frame filter press under the pressure of 0.2MPa to obtain the polyether diol.
The preparation method of the polyether triol comprises the following steps: adding 35 parts by weight of glycerol, 100 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then adding 20 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into the crude polyether triol to neutralize at 130 ℃, adding 1 part by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by using a plate-and-frame filter press to obtain the polyether triol.
The preparation method of the emulsifier comprises the following steps: 20 parts of Tween 80 and 15 parts of water-based polyether modified silicone oil by weight are added to obtain the composite emulsifier.
Example 3
The embodiment provides an acid-resistant and high-temperature processing special defoaming agent, which comprises the following raw materials in parts by weight: 60 parts of acylation intermediate, 25 parts of polyether diol, 35 parts of polyether triol and 12 parts of composite emulsifier; the preparation method of the defoaming agent comprises the following steps: adding the amidated intermediate, polyether diol, polyether triol and the like into a reaction kettle, heating to about 85 ℃, and preserving heat for 2 hours; after the heat preservation is finished, cooling; and cooling to about 45 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
The preparation method of the acylation intermediate comprises the following steps: 50 parts of soybean oil, 3 parts of 4-dimethylaminopyridine, 6 parts of precipitated white carbon black and 0.6 part of para-polyphosphoric acid are added into a reaction kettle, stirred and heated to 180 ℃, vacuumized to-0.01 MPa and reacted for 8 hours;
the preparation method of the polyether diol comprises the following steps: adding 20 parts by weight of propylene glycol, 75 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 30 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of citric acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing pressure filtration by using a plate-and-frame filter press under the pressure of 0.2MPa to obtain the polyether diol.
The preparation method of the polyether triol comprises the following steps: adding 30 parts by weight of glycerol, 90 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then 35 parts by weight of ethylene oxide is added, and the mixture reacts for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into the crude polyether triol to neutralize at 130 ℃, adding 1 part by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by using a plate-and-frame filter press to obtain the polyether triol.
The preparation method of the emulsifier comprises the following steps: 15 parts of Tween 80 and 20 parts of span 80 by weight to obtain the compound emulsifier.
Example 4
The embodiment provides an acid-resistant and high-temperature processing special defoaming agent, which comprises the following raw materials in parts by weight: 50 parts of acylation intermediate, 35 parts of polyether dihydric alcohol, 15 parts of polyether trihydric alcohol and 10 parts of composite emulsifier; the preparation method of the defoaming agent comprises the following steps: adding the amidated intermediate, polyether diol, polyether triol and the like into a reaction kettle, heating to about 80 ℃, and preserving heat for 2 hours; after the heat preservation is finished, cooling; and cooling to about 40 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
The preparation method of the acylation intermediate comprises the following steps: 60 parts of sunflower seed oil, 2 parts of 4-dimethylaminopyridine, 8 parts of precipitated white carbon black and 0.7 part of para-polyphosphoric acid are added into a reaction kettle, stirred and heated to 200 ℃, vacuumized to 0.2MPa and reacted for 8 hours;
the preparation method of the polyether diol comprises the following steps: adding 10 parts by weight of propylene glycol, 115 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 25 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of citric acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing pressure filtration by using a plate-and-frame filter press under the pressure of 0.2MPa to obtain the polyether diol.
The preparation method of the polyether triol comprises the following steps: adding 20 parts by weight of glycerol, 80 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then adding 30 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into the crude polyether triol to neutralize at 130 ℃, adding 1 part by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by using a plate-and-frame filter press to obtain the polyether triol.
The preparation method of the emulsifier comprises the following steps: 25 parts of OP-7 and 20 parts of BY-125 to obtain the composite emulsifier.
Example 5
The embodiment provides an acid-resistant and high-temperature processing special defoaming agent, which comprises the following raw materials in parts by weight: 50 parts of acylation intermediate, 25 parts of polyether diol, 20 parts of polyether triol and 8 parts of composite emulsifier; the preparation method of the defoaming agent comprises the following steps: adding the amidated intermediate, polyether diol, polyether triol and the like into a reaction kettle, heating to about 84 ℃, and preserving heat for 2 hours; after the heat preservation is finished, cooling; and cooling to about 44 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
The preparation method of the acylation intermediate comprises the following steps: 50 parts of methyl oleate, 1 part of 4-dimethylaminopyridine, 6 parts of precipitated white carbon black and 0.9 part of para-polyphosphoric acid are added into a reaction kettle, stirred and heated to 155 ℃, vacuumized to 0.2MPa and reacted for 5 hours;
the preparation method of the polyether diol comprises the following steps: adding 15 parts by weight of propylene glycol, 135 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 40 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of citric acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing pressure filtration by using a plate-and-frame filter press under the pressure of 0.2MPa to obtain the polyether diol.
The preparation method of the polyether triol comprises the following steps: adding 30 parts by weight of glycerol, 95 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then adding 25 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into the crude polyether triol to neutralize at 130 ℃, adding 1 part by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by using a plate-and-frame filter press to obtain the polyether triol.
The preparation method of the emulsifier comprises the following steps: 20 parts of AEO-5 and 10 parts of EL-40 by weight are used to obtain the composite emulsifier.
Example 6
The embodiment provides an acid-resistant and high-temperature processing special defoaming agent, which comprises the following raw materials in parts by weight: 60 parts of acylation intermediate, 30 parts of polyether diol, 15 parts of polyether triol and 10 parts of composite emulsifier; the preparation method of the defoaming agent comprises the following steps: adding the amidated intermediate, polyether diol, polyether triol and the like into a reaction kettle, heating to about 81 ℃, and preserving heat for 2 hours; after the heat preservation is finished, cooling; and cooling to about 43 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
The preparation method of the acylation intermediate comprises the following steps: 55 parts of methyl palmitate, 2 parts of 4-dimethylaminopyridine and 8 parts of precipitated white carbon black, 1 part of para-polyphosphoric acid is added into a reaction kettle, the mixture is stirred and heated to 140 ℃, the mixture is vacuumized to-0.1 MPa, and the reaction is carried out for 8 hours;
the preparation method of the polyether diol comprises the following steps: adding 20 parts by weight of propylene glycol, 115 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 20 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of citric acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing pressure filtration by using a plate-and-frame filter press under the pressure of 0.2MPa to obtain the polyether diol.
The preparation method of the polyether triol comprises the following steps: adding 20 parts by weight of glycerol, 105 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then adding 30 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into the crude polyether triol to neutralize at 130 ℃, adding 1 part by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by using a plate-and-frame filter press to obtain the polyether triol.
The preparation method of the emulsifier comprises the following steps: 25 parts of span 80 and 15 parts of TX-10 to obtain the composite emulsifier.
Test examples
To demonstrate the performance of the antifoam, performance tests were carried out as follows:
titanium ore acidolysis extraction slurry is used as foaming liquid, after the pH value is adjusted to 1.0, 200mL of the titanium ore acidolysis extraction slurry is placed into a 1000mL flat-bottom measuring cylinder with accurate scales, a bottle stopper is tightly covered and clamped on a 120 ℃ oscillator to carry out 200 times of oscillation, the foam in the measuring cylinder is ensured to be full, the measuring cylinder is rapidly taken down after oscillation, and the foam breaking and inhibiting performance evaluation is immediately carried out.
1) Evaluation of foam breaking performance: and (3) accurately and uniformly adding quantitative defoaming agent into the upper port of the vector cylinder by using a dropper, starting a stopwatch immediately after adding, recording the bubble height at different time in time, and repeating each sample for 5 times in parallel. And calculating the average value of the foam height as the standard for evaluating the performance of the defoaming agent, wherein the higher the foam height is, the worse the foam breaking performance of the defoaming agent is, and conversely, the better the foam breaking performance is.
2) Evaluation of foam suppressing performance: the foam height at the time is recorded, each sample is repeated for 5 times in parallel, the average value of the foam height is calculated to be used as the standard for evaluating the foam inhibition performance of the defoaming agent, and the higher the foam height is, the poorer the foam inhibition performance of the defoaming agent is, and the better the foam inhibition performance is.
TABLE 1 results of antifoam Performance verification
As seen from the above table, the foam suppressing performance and the defoaming performance of examples 4 to 6 are superior to those of examples 1 to 3. Meanwhile, the foam inhibiting performance and the defoaming performance of the examples 4 to 6 are better than those of polyether and organic silicon defoaming agents of other manufacturers in China. The patent mainly explains the difference of defoaming capability and foam inhibiting capability of defoaming agents of different types of acids or esters, different solid dispersing agents and different emulsifying agents.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (6)
1. The special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide is characterized in that: the composition comprises the following raw materials in parts by weight: 30-60 parts of fatty acid or ester, 1-5 parts of acylating agent, 5-10 parts of solid dispersant, 15-40 parts of polyether diol, 15-40 parts of polyether triol and 8-20 parts of emulsifier; fatty acid or ester, acylating agent and solid dispersant constitute amidated intermediate.
2. The special antifoaming agent for processing phosphoric acid, boric acid and titanium dioxide as claimed in claim 1, which is characterized in that: the fatty acid or ester comprises tall oil, palmitic acid, soybean oil, sunflower seed oil, methyl oleate, methyl palmitate; the molecular weight of the dihydric alcohol is 2000-3000, and the molecular weight of the polyether trihydric alcohol is 4000-6000; the emulsifier comprises one or more of TX, BY, EL, span, Tween and polyether modified silicone oil.
3. A preparation method of a special defoaming agent for processing phosphoric acid, boric acid and titanium dioxide is characterized by comprising the following steps: the preparation method of the defoaming agent comprises the following steps: adding the amidated intermediate, polyether diol, polyether triol and the like into a reaction kettle, heating to 80-85 ℃, and preserving heat for 2 hours; after the heat preservation is finished, cooling; and cooling to 40-45 ℃, adding the emulsifier, and continuously preserving the heat for 1 hour to obtain the product defoamer.
4. The preparation method of the special antifoaming agent for processing phosphoric acid, boric acid and titanium dioxide as claimed in claim 3, which is characterized in that: preparation method of amidated intermediate: 30-50 parts of fatty acid or ester, 1-3 parts of acylating agent, 5-10 parts of solid dispersing agent and 0.5-1 part of p-toluenesulfonic acid are added into a reaction kettle, stirred and heated to 180-210 ℃, vacuumized to-0.1-0.3 MPa and reacted for 6-8 hours.
5. The preparation method of the special antifoaming agent for processing phosphoric acid, boric acid and titanium dioxide as claimed in claim 3, which is characterized in that: the preparation method of the polyether diol comprises the following steps: adding 20 parts by weight of ethylene glycol, 80 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 130 ℃, pressurizing to 0.9 MPa, and reacting for 12 hours; then adding 30 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 130 deg.C for 3 hr; vacuumizing at 100 deg.C and vacuum degree of-800 mmHg to obtain crude polyether glycol; adding 0.5 part by weight of oxalic acid into the crude polyether diol to neutralize at 120 ℃, adding 5 parts by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by a plate-and-frame filter press to obtain the polyether diol.
6. The preparation method of the special antifoaming agent for processing phosphoric acid, boric acid and titanium dioxide as claimed in claim 3, which is characterized in that: the preparation method of the polyether triol comprises the following steps: adding 25 parts by weight of glycerol, 80 parts by weight of propylene oxide and 1 part by weight of potassium hydroxide into a reaction kettle, stirring, heating to 150 ℃, pressurizing to 0.8 MPa, and reacting for 12 hours; then adding 40 parts by weight of ethylene oxide, and reacting for 6 hours at the temperature of 120 ℃ and the pressure of 0.5 MPa; aging at 100 deg.C for 10 hr; vacuumizing at 130 ℃ and under the vacuum degree of-800 mmHg to obtain crude polyether triol; adding 0.5 part by weight of oxalic acid into the crude polyether triol to neutralize at 130 ℃, adding 1 part by weight of activated carbon to decolorize, and performing filter pressing under the pressure of 0.2MPa by using a plate-and-frame filter press to obtain the polyether triol.
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| CN114681958A (en) * | 2020-12-31 | 2022-07-01 | 南京德俊新材料科技有限公司 | A kind of water-based paint defoamer and preparation method thereof |
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Application publication date: 20200814 |