CN105152255B - A kind of preparation method of use in waste water treatment defoamer - Google Patents
A kind of preparation method of use in waste water treatment defoamer Download PDFInfo
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- CN105152255B CN105152255B CN201510607976.XA CN201510607976A CN105152255B CN 105152255 B CN105152255 B CN 105152255B CN 201510607976 A CN201510607976 A CN 201510607976A CN 105152255 B CN105152255 B CN 105152255B
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- 239000013530 defoamer Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 31
- 239000010703 silicon Substances 0.000 claims abstract description 31
- 239000006071 cream Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229920002545 silicone oil Polymers 0.000 claims abstract description 22
- 239000000839 emulsion Substances 0.000 claims abstract description 13
- 239000002671 adjuvant Substances 0.000 claims abstract description 11
- 238000013329 compounding Methods 0.000 claims abstract description 10
- 238000012986 modification Methods 0.000 claims abstract description 7
- 230000004048 modification Effects 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
- 229920000570 polyether Polymers 0.000 claims description 37
- 238000006243 chemical reaction Methods 0.000 claims description 27
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 27
- 239000003921 oil Substances 0.000 claims description 20
- 239000000377 silicon dioxide Substances 0.000 claims description 20
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 19
- 150000003376 silicon Chemical class 0.000 claims description 16
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 13
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 9
- 229940008099 dimethicone Drugs 0.000 claims description 9
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000005543 nano-size silicon particle Substances 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- 229910003978 SiClx Inorganic materials 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 239000002351 wastewater Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 238000003911 water pollution Methods 0.000 abstract 1
- -1 alkane alkane Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 4
- 230000003254 anti-foaming effect Effects 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical class C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 238000009775 high-speed stirring Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical class CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 244000131522 Citrus pyriformis Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 208000012839 conversion disease Diseases 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000223 polyglycerol Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000009923 sugaring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Silicon Polymers (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention discloses a kind of preparation method of use in waste water treatment defoamer, belong to water treatment agent field.The preparation process of defoamer of the present invention is as follows：1）The modification of organic silicone oil；2）The preparation of silicon cream；3）The compounding of defoamer.Defoamer made from the inventive method, using the good organic silicone oil of chemical stability, after polyether-modified, is formed with the compounding such as silicon cream, emulsion adjuvant.The defoamer chemical stability is strong, strong alkali-acid resistance, froth breaking suds ability are strong, and addition is few, and the suds time is long, and the product will not increase the COD of waste water, it is to avoid due to the addition of the secondary waste water pollution that defoamer is caused.
Description
Technical field
The invention belongs to water treatment agent field, and in particular to a kind of preparation method of use in waste water treatment defoamer.
Background technology
A large amount of foams are easily produced in wastewater treatment process, it is necessary to eliminate in time, general periodically addition defoamer.At present
Defoamer is broadly divided into three classes：Mineral oils, organic silicon, polyethers.Common defoamer poor chemical stability, and in waste water
Complicated component, causes common defoamer floating oil, and foam time is short.
The research of defoamer in recent years be concentrated mainly on the compounding of organo-silicon compound and surfactant, polyethers with it is organic
On the compounding of silicon, the water-soluble or Compositional type defoamer such as oil soluble polyether and the compounding of silicon-containing polyether.For current defoamer,
Polyethers and the performance of organic silicon defoamer are the most excellent, the developmental research of modification and new varieties to this two classes defoamer
Compare active.
Patent No. ZL200410064717.9 discloses a kind of high temperature defoamer and preparation method thereof, and it is by following component
Composition：（1）Defoaming activity material：Including the polymerization of organic poly-silicon gas alkane alkane, hydrophobic silicic aerogels, polyoxyethylene and oxypropylene block
Thing；（2）Emulsifying agent, organosilyl surfactant；（3）Decentralized medium water.The preparation method of the high temperature defoamer comprises the following steps：
（1）Emulsifying agent is first well mixed with defoaming activity thing；（2）Stirring is sufficiently mixed at 50~80 DEG C, adds water in oil and is turned
Phase；（3）By step（2）Mixture after middle phase inversion enters colloid mill circulation, then dilutes and can obtain high temperature defoamer.The high temperature defoamer
In high temperature degree（60~90 DEG C）, with good antifoaming performance and stability；During high temperature Jet Overflow dye, still
The good antifoaming performance of energy holding and stability, do not result in dyeing inequality or the defect of specking.
Patent No. ZL200510034583.0 discloses a kind of preparation method of industrial defoaming agent, and its method is first will
Glycerine aggregates into the polyglycerol that the degree of polymerization is 2-10 under catalysts conditions, then by definite quality than adding glycerine fatty acid
Ester or aliphatic acid carry out ester exchange.The invention production technology is easy, and raw material is easy to get, and froth breaking, suds effect are good, it is adaptable to papermaking,
The techniques such as sugaring, fermentation.
Patent No. ZL200410027790.9 discloses a kind of water-soluble defoamer of Nano/micron grade silicon dioxide synthesis
And preparation method thereof, the defoamer by particle diameter be silica of the 5~2000nm without hydrophobic treatment, molecular weight be 800~
Dimethicone, polyoxyethylene of 2000 EVA, molecular weight for 15000~60000（4~10）Octylphenol ether, molecular weight
Constituted for 1200~2600 propane diols polyoxyethylene poly-oxygen propylene aether；The preparation method of above-mentioned defoamer, comprises the following steps：
Silica is subjected to high-temperature process；By the silica after high-temperature process and dimethicone stirring reaction, then add altogether
Aggressiveness, continues to pump the water and ethanol of reaction generation after reacting；Add polyoxyethylene（4~10）Octylphenol ether and propane diols polyoxy
Ethene polyethenoxy ether, continues to pump the water and ethanol of reaction generation after reacting, room temperature is down to naturally.The invention defoaming effect
Good, performance is stable, is suitably applied in high-efficient cutting grinding coolant.
Patent No. ZL01144354.5 discloses a kind of emulsion type defoaming agent, and the defoamer is by 40~60 mass parts
The C of alkymer and 10~35 mass parts4~C8Hydramine and 10~40 mass parts C10~C18Aliphatic acid 70~150 DEG C be esterified 30~
150 minutes products therefroms help defoamer with 5~15 mass parts again, and 3~8 mass parts dispersants mix breast with water at 20~80 DEG C
Product obtained by changing 1~4 hour.The defoamer of the invention has antifoaming speed fast, and suds ability is strong, particularly to for rubber
The conventional a variety of anion of glue, plastics-production system, nonionic foaming agent have good foam-inhibiting effect.
The defoamer of above-mentioned prior art after a large amount of uses mainly due to that can increase the COD of waste water, so as to cause secondary dirt
Dye.Due to the complicated component of waste water, and with strong acid alkalescence.Therefore need to design a defoaming capacity by force and the suds time be long,
Strong alkali-acid resistance, while system COD special defoamer will not be increased.
The content of the invention
It is an object of the invention to provide a kind of use in waste water treatment defoamer for problem present in background technology
Preparation method.
Realize technical scheme that the object of the invention uses for：A kind of preparation method of use in waste water treatment defoamer, it is prepared
Step is as follows：
1）The modification of organic silicone oil
Containing hydrogen silicone oil is mixed with polyethers, through Speier catalyst actions, polyether modified silicon oil, whole reaction system is made
Blanketing with inert gas, system reaction temperature is 200~300 DEG C, and the reaction time is 8~10 hours；
2）The preparation of silicon cream
Hydrophabic silica is mixed with dimethicone, heating stirring, translucent silicon cream is made；
3）The compounding of defoamer
By step 1）Obtained polyether modified silicon oil, step 2）Obtained silicon cream, emulsion adjuvant are mixed with water, high-speed stirring
Mix, that is, use in waste water treatment defoamer is made.
Wherein, step 1）Described in containing hydrogen silicone oil and polyethers mass ratio be 1.2~1.5, preferably 1：1.3, institute
The consumption for the Speier catalyst stated is the 0. 4%~0.5% of containing hydrogen silicone oil and polyethers weight sum.
Preferably, step 1）In, the molecular weight of described containing hydrogen silicone oil is 5000~10000.
It is highly preferred that step 1）In, described polyethers is ethylene oxide propylene oxide copolyether, and its EO/PO ratio is
0.5~0.6.
It is further preferred that step 2）Described in hydrophabic silica and dimethicone mass ratio be 1：8~12,
Preferably 1：8~10, most preferably 1：9.
Step 3）In obtained defoamer constituent and percentage composition be：Polyether modified silicon oil 4~8%, silicon cream 10
~15%, emulsion adjuvant 5~10%, surplus are water.
It is further preferred that step 2）Described in silicon cream prepare and also include modified manometer silicon dioxide, the modification receives
Rice silica is modified by following steps and is made：1）Citric acid is dissolved in deionized water and forms solution, regulation pH value of solution=4~
5, add nano silicon, high-speed stirred；2）Constant temperature back flow reaction is carried out, reaction temperature is 80~95 DEG C, reaction time 0.5
~2h, carries out suction filtration after completion of the reaction, washs to pH=7, is then put in baking oven and is dried, that is, modified nanometer two is made
Silica.
Wherein, described citric acid and the mass volume ratio of deionized water are 1g：5mL, described nano silicon with
The mass ratio of citric acid is 1：（1~3）.
The technological merit of the present invention is：
1）Defoamer made from the inventive method, using the good organic silicone oil of chemical stability, after polyether-modified, with
The compounding such as silicon cream, emulsion adjuvant is formed.The defoamer chemical stability is strong, strong alkali-acid resistance, froth breaking suds ability are strong, addition
Few, the suds time is long, and the product will not increase the COD of waste water, it is to avoid due to the addition of the secondary waste water that defoamer is caused
Pollution.
2）The key point of the present invention is the ratio of polyether-modified link and silicone oil used and polyethers, and controls to react
The temperature and time of journey.
3）The silicon cream of the present invention also contains modified manometer silicon dioxide in preparing, and can improve the froth breaking energy of dimethicone
Power, and defoamer froth breaking stability.
4）Occur bonding reaction to the hydroxyl of nano-silica surface from citric acid, make nanometer silicon dioxide particle it
Between be difficult reunite, improve dispersive property of the nano silicon in froth breaking emulsion.
Embodiment
The present invention is further described through with reference to embodiment.
A kind of preparation method of use in waste water treatment defoamer of the present invention, its preparation process is as follows：
1）The modification of organic silicone oil
Containing hydrogen silicone oil is mixed with polyethers, through Speier catalyst actions, polyether modified silicon oil, whole reaction system is made
Blanketing with inert gas；
2）The preparation of silicon cream
Hydrophabic silica is mixed with dimethicone, heating stirring, translucent silicon cream is made；
3）The compounding of defoamer
By step 1）Obtained polyether modified silicon oil, step 2）Obtained silicon cream, emulsion adjuvant are mixed with water, high-speed stirring
Mix, that is, use in waste water treatment defoamer is made.
Embodiment 1
1）The containing hydrogen silicone oil for being 5000 by 50 gram-molecular weights with 60 grams of EO/PO ratios is that 0.5 polyethers is mixed, and adds 0.4 gram
Speier catalyst, reaction temperature is 200 DEG C, reacts 8 hours obtained polyether modified silicon oils, and standby, whole reaction system is with lazy
Property gas shield；
2）20 grams of hydrophabic silicas are mixed with 160 grams of dimethicones, 50 DEG C of stirrings is heated to, is made translucent
Silicon cream；
3）By 40 grams of steps 1）Obtained polyether modified silicon oil, 150 grams of steps 2）Obtained silicon cream, 50 grams of emulsion adjuvants with
760 grams of water mixing, high-speed stirred is made use in waste water treatment defoamer.
Embodiment 2
1）The containing hydrogen silicone oil for being 6000 by 50 gram-molecular weights with 65 grams of EO/PO ratios is that 0.6 polyethers is mixed, and adds 0.45 gram
Speier catalyst, reaction temperature is 250 DEG C, reacts 9 hours obtained polyether modified silicon oils, and standby, whole reaction system is with lazy
Property gas shield；
2）20 grams of hydrophabic silicas are mixed with 180 grams of dimethicones, 50 DEG C of stirrings is heated to, is made translucent
Silicon cream；
3）By 60 grams of steps 1）Obtained polyether modified silicon oil, 100 grams of steps 2）Obtained silicon cream, 100 grams of emulsion adjuvants
Mixed with 740 grams of water, high-speed stirred, that is, use in waste water treatment defoamer is made.
Embodiment 3
1）The containing hydrogen silicone oil for being 10000 by 50 gram-molecular weights with 70 grams of EO/PO ratios is that 0.54 polyethers is mixed, and adds 0.5
Gram Speier catalyst, reaction temperature is 300 DEG C, reacts 10 hours obtained polyether modified silicon oils, and standby, whole reaction system is used
Inert gas shielding；
2）20 grams of hydrophabic silicas are mixed with 200 grams of dimethicones, 50 DEG C of stirrings is heated to, is made translucent
Silicon cream；
3）By 80 grams of steps 1）Obtained polyether modified silicon oil, 120 grams of steps 2）Obtained silicon cream, 70 grams of emulsion adjuvants with
730 grams of water mixing, high-speed stirred is made use in waste water treatment defoamer.
Embodiment 4
1）The containing hydrogen silicone oil for being 10000 by 50 gram-molecular weights with 75 grams of EO/PO ratios is that 0.54 polyethers is mixed, and adds 0.5
Gram Speier catalyst, reaction temperature is 250 DEG C, reacts 10 hours obtained polyether modified silicon oils, and standby, whole reaction system is used
Inert gas shielding；
2）20 grams of hydrophabic silicas are mixed with 240 grams of dimethicones, 50 DEG C of stirrings is heated to, is made translucent
Silicon cream；
3）By 70 grams of steps 1）Obtained polyether modified silicon oil, 130 grams of steps 2）Obtained silicon cream, 60 grams of emulsion adjuvants with
740 grams of water mixing, high-speed stirred is made use in waste water treatment defoamer.
Embodiment 1~4 aim at wastewater treatment compounding waterborne organic silicon defoamer, in water can rapid dispersion, be difficult
Floating oil, antifoaming speed is fast, and suds persistently, will not increase the COD in waste water, it is to avoid the secondary pollution of water body is caused, with more preferable
Resistance to acids and bases.Corrosion-free, nontoxic, without adverse side effect, non-ignitable, not quick-fried without physiologically active, safety is high.Embodiment 5 is to select
Commercially available defoamer GP330, embodiment 6 are to select commercially available defoamer FAG470.Using preceding COD with using the specific of rear COD
Change, is shown in Table 1.
Table 1
The present invention can show that optimal reaction temperature is 200~300 DEG C by orthogonal test, and the reaction time is 8~10
Hour, catalyst amount is 0.4~0.5%, and the ratio of silicone oil and polyethers is lower, i.e. content of polyether is higher, and reaction conversion ratio is got over
Height, but the defoamer compounded simultaneously is higher to the COD of water body.Pass through the selected silicone oil of experiment：Polyethers=1：It is optimal when 1.3.
In order to improve the defoaming capacity of dimethicone, and defoamer froth breaking stability.In the silicon cream of embodiment 1~4
In the step of preparation, modified manometer silicon dioxide is additionally added.Modified manometer silicon dioxide is modified by following steps and is made：1）By lemon
Lemon acid, which is dissolved in deionized water, forms solution, adjusts pH value of solution=4~5, adds nano silicon, high-speed stirred；2）Carry out permanent
Warm back flow reaction, reaction temperature is 80~95 DEG C, and 0.5~2h of reaction time carries out suction filtration after completion of the reaction, washs to pH=7,
Then it is put in baking oven and is dried, that is, modified nano silicon is made.Wherein, described citric acid and deionized water
Mass volume ratio is 1g：5mL, described nano silicon and the mass ratio of citric acid are 1：（1~3）.
It should be noted that the embodiment described in this specification, its formula, technique named title etc. can be different.
The equivalent or simple change that every construction, feature and principle according to described in inventional idea of the present invention is done, is included in this hair
In the protection domain of bright patent.Those skilled in the art can do various to described embodiment
Modification or supplement or substituted using similar mode, structure without departing from the present invention or surmount present claims and defined
Scope, belong to protection scope of the present invention.
Claims (5)
1. a kind of preparation method of use in waste water treatment defoamer, it is characterised in that preparation process is as follows：
1）The modification of organic silicone oil
Containing hydrogen silicone oil is mixed with polyethers, through Speier catalyst actions, polyether modified silicon oil is made, whole reaction system is with lazy
Property gas shield, system reaction temperature be 200~300 DEG C, the reaction time be 8~10 hours；
2）The preparation of silicon cream
Hydrophabic silica is mixed with dimethicone, heating stirring, translucent silicon cream is made；
3）The compounding of defoamer
By step 1）Obtained polyether modified silicon oil, step 2）Obtained silicon cream, emulsion adjuvant are mixed with water, high-speed stirred, i.e.,
Use in waste water treatment defoamer is made；
Wherein, step 2）Described in silicon cream prepare also include modified manometer silicon dioxide, the modified manometer silicon dioxide by with
Lower step, which is modified, to be made：1）Citric acid is dissolved in deionized water and forms solution, pH value of solution=4~5 are adjusted, nano-silica is added
SiClx, high-speed stirred；2）Constant temperature back flow reaction is carried out, reaction temperature is 80~95 DEG C, and 0.5~2h of reaction time, reaction is finished
After carry out suction filtration, wash to pH=7, be then put in baking oven and be dried, that is, modified nano silicon is made；
Described citric acid and the mass volume ratio of deionized water are 1g：5mL, described nano silicon and the matter of citric acid
Amount is than being 1：（1~3）.
2. a kind of preparation method of use in waste water treatment defoamer according to claim 1, it is characterised in that：Step 1）Middle institute
The containing hydrogen silicone oil and the mass ratio of polyethers stated are 1：1.2~1.5, the consumption of described Speier catalyst is containing hydrogen silicone oil and poly-
The 0.4%~0.5% of ether weight sum.
3. a kind of preparation method of use in waste water treatment defoamer according to claim 1, it is characterised in that：Step 1）In,
The molecular weight of described containing hydrogen silicone oil is 5000~10000, and described polyethers is ethylene oxide propylene oxide copolyether, its EO/
PO ratios are 0.5~0.6.
4. a kind of preparation method of use in waste water treatment defoamer according to claim 1, it is characterised in that：Step 2）Middle institute
The hydrophabic silica and the mass ratio of dimethicone stated are 1：8~12.
5. a kind of preparation method of use in waste water treatment defoamer according to claim 1, it is characterised in that：Step 3）Middle institute
The constituent and percentage composition of obtained defoamer be：Polyether modified silicon oil 4~8%, silicon cream 10~15%, emulsion adjuvant 5~
10%th, surplus is water.
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| CN109248470A (en) * | 2017-07-13 | 2019-01-22 | 广州崃克保化工有限公司 | A kind of environment-friendly type aqueous defoaming agent |
| CN108501476A (en) * | 2018-03-14 | 2018-09-07 | 合肥远科服装设计有限公司 | A kind of cold-proof processing technology for taking thermal insulation material |
| CN108970182A (en) * | 2018-07-12 | 2018-12-11 | 杨帮燕 | A kind of stable type defoaming agent and preparation method thereof |
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