CN107651721A - A kind of nontoxic defoamer for refinery alkaline sewage and preparation method thereof - Google Patents
A kind of nontoxic defoamer for refinery alkaline sewage and preparation method thereof Download PDFInfo
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- CN107651721A CN107651721A CN201711059021.0A CN201711059021A CN107651721A CN 107651721 A CN107651721 A CN 107651721A CN 201711059021 A CN201711059021 A CN 201711059021A CN 107651721 A CN107651721 A CN 107651721A
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- Prior art keywords
- mixture
- defoamer
- nontoxic
- modified polyether
- carbon
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
Abstract
The invention discloses a kind of nontoxic defoamer for refinery alkaline sewage, it is made up of the component of following weight/mass percentage composition：High-carbon alcohol mixture 10%~20%, ethanol solution 3%~7%, phosphoric acid 2%~3%, sodium carboxymethylcellulose 2%~5%, polysiloxanes 10%~15%, modified polyether mixture 25%~30%, surplus are deionized water.The nontoxic defoamer that the present invention is used for alkaline sewage will not be inactivated because of high density sulfides, and the dead drop effect of biological sludge will not be brought to system；Foam surface free energy can be effectively reduced, powder performance is improved, reduces usage amount, and the COD of system water outlet will not be impacted.
Description
Technical field
The present invention relates to the auxiliary agent for improving oil refining wastewater surface-active, and in particular to one kind is given up applied to refinery desulfurization alkaline residue
The no biotoxicity defoamer of water biochemical treatment system.
Background technology
Oil refining enterprise is in the production processes such as gasoline, diesel oil and ethene for the anti-corrosion of equipment and changing for product quality
It is kind, the method removing sulfur of alkali cleaning is generally aided with during oil refinery etc..During the impurity such as alkali cleaning removing sulfide
Caused spent lye, with foul odour, in dark brown, it is referred to as in the industry " alkaline residue ".According to the difference in source, can be divided into
Liquid hydrocarbon alkali residue, gasoline alkaline residue, diesel alkaline residue and ethene alkaline residue.High alkalinity is characterized in, contains vulcanized sodium, mercaptan, thioether, sulphur
A variety of toxic and harmful substances such as phenol, phenol, aphthenic acids and oils, generally, sulfide concentration more than 8000m g/L,
Volatile phenol mass concentration is more than 1000mg/L, and COD is more than 20000mg/L, and pH value is more than 12.With the entirety sewage generation of refinery factory
Amount is compared, and the yield of alkaline sewage is simultaneously little, typically constitute from the 1% of refinery sewage total amount less than, but its sulfide, phenols and
The discharge capacity of the pollutants such as COD accounts for the 30%-50% of oil plant gross contamination thing discharge capacity, turns into the main pollution of oil refining factory
Source.
All it is aerobic biochemical process substantially in the existing alkaline residue processing item built and built up, this process route
It is aerated using big flux as oxidation means, if without defoaming treatment, substantial amounts of chemistry or bio foam will be produced, by alkaline residue
In a variety of volatile hypertoxic chemical substances such as sulfide, phenol and acid take out of, the working environment around serious pollution, and easily
Trigger staff that sulfide poisoning harm occurs, jeopardize the safety of staff's normal operation.And caused foam can enter
Enter circulating pump and circulation line, produce cavitation erosion and air foam entrainment, reduce system circulation amount, hinder the normal aeration of system.Together
When foam can cause liquid level virtual height in unit, liquid level is shown deviation occur, reduce in actual cell and possess water, reduce actual
Zoneofoxidation volume.
Due to refinery alkaline sewage characteristic and sewage aerobic aeration system the characteristics of, it is resistance to determine that defoamer must possess
High salt, resistance to high COD, no biotoxicity, work it is rapid, the features such as efficient suds.
The content of the invention
It is an object of the invention to the particularity according to alkaline sewage biochemical processing, there is provided a kind of resistance to high salt, resistance to height
COD, no biotoxicity, work rapid, the special defoamer of alkaline sewage biochemical treatment of efficient suds, to ensure refinery desulfurization alkali
The system hardware and site environment of slag biochemical treatment process for wastewater are safeguarded, are easy to use producer preferably to control sewage disposal system
Normal operation.
Technical scheme is used by realizing above-mentioned purpose of the present invention：
A kind of nontoxic defoamer for refinery alkaline sewage biochemical treatment system, by the component of following weight/mass percentage composition
Composition：High-carbon alcohol mixture 10%~20%, ethanol solution 3%~7%, phosphoric acid 2%~3%, sodium carboxymethylcellulose 2%~
5%th, polysiloxanes 10%~15%, modified polyether mixture 25%~30%, surplus are deionized water；
Wherein described higher alcohols mixture be ten four carbon alcohols, 1- hexadecanols and stearyl alcohol mixture, ten four carbon alcohols：1-
Hexadecanol：The mass ratio of stearyl alcohol is (3~5)：(1~2)：1；
The ethanol solution mass concentration is 95%；
The polysiloxane molecule amount is 2000~2500；
The modified polyether mixture is that high-carbon alkyl hydroxy propylene ether is polymer-modified, the polymerization of alkyl diol propylene ether
The mixture of thing, alkyl carboxylic acid base modified polyether, high-carbon alkyl hydroxy propylene ether are polymer-modified：Alkyl diol propylene ether polymerize
Thing：The mass ratio of alkyl carboxylic acid base modified polyether is 2：2：(1~3).
Present invention also offers a kind of preparation of the above-mentioned nontoxic defoamer for refinery alkaline sewage biochemical treatment system
Method, including：In a kettle by weight deionized water, phosphoric acid is added, sodium carboxymethylcellulose is stirring evenly and then adding into, is stirred
Ethanol solution, high-carbon alcohol mixture are added after mixing uniformly, polysiloxanes, modified polyether mixture, stirring while adding, addition finishes
After continue stirring after be made nontoxic defoamer.
The present invention still further provides preferred scheme：Deionized water, phosphoric acid are added, room temperature is cooled to after stirring,
Add sodium carboxymethylcellulose and stir 40~60min, whipping temp is controlled more than 60 DEG C, then heats to 80 DEG C~90
DEG C, ethanol solution, high-carbon alcohol mixture are added while stirring, polysiloxanes, modified polyether mixture, continue stirring 60 after addition
~90min.
The invention has the advantages that：The present invention be used for the nontoxic defoamer of alkaline sewage using nonionic and it is cloudy from
Subtype active component, to tackle the alkaline sewage of sulfide high content, it is ensured that the active ingredient of medicament will not vulcanize because of high concentration
Thing and inactivate.Simultaneously to the component of the preferred sludge small toxicity of active component, to ensure that the use of defoamer will not be brought to system
The dead drop effect of biological sludge.Using nonionic and anion each to organic phase and the close and distant property of inorganic phase, pass through compound synergic
The surface tension of two-way increase substance solution is realized, reduces the purpose of foam surface free energy, powder performance is improved, reduces use
Amount, makes it not impacted to the COD of system water outlet.
Embodiment：
Embodiment one：A kind of nontoxic defoamer for refinery alkaline sewage of the present invention, is calculated by mass percentage, its
Composition is as follows：Ethanol solution 5%, phosphoric acid 2%, sodium carboxymethylcellulose 3%, polysiloxanes 10%, high-carbon alcohol mixture 10%
(ten four carbon alcohols：1- hexadecanols：Stearyl alcohol=3：1：1), (high-carbon alkyl hydroxy propylene ether is modified modified polyether mixture 30%
Polymer：Alkyl diol propylene ether polymer：Alkyl carboxylic acid base modified polyether=2：2：1), deionized water 40%.
Preparation technology：Deionized water, phosphoric acid are proportionally added into a kettle, room temperature is cooled to after stirring, and are added
Sodium carboxymethylcellulose simultaneously stirs 40min, and whipping temp is controlled more than 60 DEG C, then heats to 80 DEG C~90 DEG C, side stirring
Side adds ethanol solution, high-carbon alcohol mixture, polysiloxanes, modified polyether mixture, continues to stir 80min after addition.Add
After continue stirring and obtain anti-foam product.
Embodiment two：The nontoxic defoamer of the present invention, is calculated, its composition is as follows by mass percentage：Ethanol solution 7%, phosphorus
Acid 3%, sodium carboxymethylcellulose 5%, polysiloxanes 10%, (ten four carbon alcohols of high-carbon alcohol mixture 20%：1- hexadecanols：Firmly
Lipidol=5：2：1), (high-carbon alkyl hydroxy propylene ether is polymer-modified for modified polyether mixture 25%：Alkyl diol propylene ether gathers
Compound：Alkyl carboxylic acid base modified polyether=2：2：2), deionized water 30%.
Preparation technology：Deionized water, phosphoric acid are proportionally added into a kettle, room temperature is cooled to after stirring, and are added
Sodium carboxymethylcellulose simultaneously stirs 50min, and whipping temp is controlled more than 60 DEG C, then heats to 80 DEG C~90 DEG C, side stirring
Side adds ethanol solution, high-carbon alcohol mixture, polysiloxanes, modified polyether mixture, continues to stir 60min after addition.Add
After continue stirring and obtain anti-foam product.
Embodiment three：A kind of nontoxic defoamer for refinery alkaline sewage of the present invention, is calculated by mass percentage, its
Composition is as follows：Ethanol solution 3%, phosphoric acid 2%, sodium carboxymethylcellulose 2%, polysiloxanes 10%, high-carbon alcohol mixture 10%
(ten four carbon alcohols：1- hexadecanols：Stearyl alcohol=4：1：1), (high-carbon alkyl hydroxy propylene ether is modified modified polyether mixture 25%
Polymer：Alkyl diol propylene ether polymer：Alkyl carboxylic acid base modified polyether=2：2：1), deionized water 48%.
Preparation technology：Deionized water, phosphoric acid are proportionally added into a kettle, room temperature is cooled to after stirring, and are added
Sodium carboxymethylcellulose simultaneously stirs 60min, and whipping temp is controlled more than 60 DEG C, then heats to 80 DEG C~90 DEG C, side stirring
Side adds ethanol solution, high-carbon alcohol mixture, polysiloxanes, modified polyether mixture, continues to stir 90min after addition.Add
After continue stirring and obtain anti-foam product.
Effect test is illustrated：
It is high using a diameter of 10cm using certain factory's scene refinery alkaline sewage biochemical treatment system water sample as test fluid
The quartz-glass cylinder spent for 45cm is test container, tests basic liquid level in 15cm positions.Keep testing using water bath with thermostatic control
Liquid temperature degree is 35 degrees Celsius, using national standard GB12579-2002 gas diffusion head, with 2.5L/min speed in test fluid bottom
Position blasts air.
Do not add under the blank control state of defoamer, foam reached 30cm height in 6 seconds.
After foam reaches 30cm height, defoamer is added by 15mg/L concentration, lather collapse in 4s, with foam go up to
For 25cm as the out-of-service time, effective suds time is 4h.
The existing silicon systems defoamer in market, puts into same adding consistency, and foam is down to 25cm in 15s, is not wholly absent；Dosing
After amount expansion is four times greater, foam can be eliminated in 5 seconds, but the effectively suds time is only 1h.
Claims (3)
- A kind of 1. nontoxic defoamer for refinery alkaline sewage biochemical treatment system, by the component group of following weight/mass percentage composition Into：High-carbon alcohol mixture 10%~20%, ethanol solution 3%~7%, phosphoric acid 2%~3%, sodium carboxymethylcellulose 2%~ 5%th, polysiloxanes 10%~15%, modified polyether mixture 25%~30%, surplus are deionized water；Wherein described higher alcohols mixture be ten four carbon alcohols, 1- hexadecanols and stearyl alcohol mixture, ten four carbon alcohols：1- 16 Alkanol：The mass ratio of stearyl alcohol is (3~5)：(1~2)：1；The ethanol solution mass concentration is 95%；The polysiloxane molecule amount is 2000~2500；The modified polyether mixture is polymer-modified high-carbon alkyl hydroxy propylene ether, alkyl diol propylene ether polymer, alkane The mixture of yl carboxylic acid base modified polyether, high-carbon alkyl hydroxy propylene ether are polymer-modified：Alkyl diol propylene ether polymer：Alkane The mass ratio of yl carboxylic acid base modified polyether is 2：2：(1~3).
- A kind of 2. preparation side of the nontoxic defoamer for refinery alkaline sewage biochemical treatment system described in claim 1 Method, it is characterised in that including：In a kettle by weight deionized water, phosphoric acid is added, carboxymethyl fibre is stirring evenly and then adding into Plain sodium is tieed up, is stirring evenly and then adding into ethanol solution, high-carbon alcohol mixture, polysiloxanes, modified polyether mixture, side edged stirs Mix, nontoxic defoamer is made after continuing stirring after addition.
- 3. preparation method as claimed in claim 2, it is characterised in that add deionized water, phosphoric acid, be cooled to after stirring Room temperature, add sodium carboxymethylcellulose and stir 40~60min, whipping temp is controlled more than 60 DEG C, then heats to 80 DEG C ~90 DEG C, ethanol solution, high-carbon alcohol mixture are added while stirring, polysiloxanes, modified polyether mixture, continues to stir after addition Mix 60~90min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711059021.0A CN107651721A (en) | 2017-11-01 | 2017-11-01 | A kind of nontoxic defoamer for refinery alkaline sewage and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711059021.0A CN107651721A (en) | 2017-11-01 | 2017-11-01 | A kind of nontoxic defoamer for refinery alkaline sewage and preparation method thereof |
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| CN107651721A true CN107651721A (en) | 2018-02-02 |
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| CN201711059021.0A Pending CN107651721A (en) | 2017-11-01 | 2017-11-01 | A kind of nontoxic defoamer for refinery alkaline sewage and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626476A (en) * | 2018-12-28 | 2019-04-16 | 中海油天津化工研究设计院有限公司 | A kind of universal defoaming agent of oil refining wastewater biochemical system and preparation method thereof |
| CN110935201A (en) * | 2019-12-27 | 2020-03-31 | 中海油天津化工研究设计院有限公司 | Defoaming agent for MVR evaporation system and preparation method thereof |
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| JPH08192001A (en) * | 1995-01-14 | 1996-07-30 | Sannopuko Kk | W/o emulsion type defoaming agent composition and defoaming method using the same |
| CN101130939A (en) * | 2007-09-27 | 2008-02-27 | 南京四新科技应用研究所有限公司 | Antifoam agent for wet part of papermaking |
| CN101759288A (en) * | 2009-12-10 | 2010-06-30 | 武汉大学 | Defoaming agent for removing foams in waste water aerobic activated sludge pond and preparation method and application thereof |
| CN101884852A (en) * | 2010-06-30 | 2010-11-17 | 南京四新科技应用研究所有限公司 | Method for improving properties of polyether defoaming agent |
| CN104874208A (en) * | 2014-12-08 | 2015-09-02 | 唐山三友硅业有限责任公司 | Acid and alkali-resistant organosilicone composite antifoaming agent and preparation method thereof |
| CN106178610A (en) * | 2016-08-29 | 2016-12-07 | 江苏精科嘉益工业技术有限公司 | A kind of higher alcohols emulsified antifoam agent and preparation method thereof |
| CN106283863A (en) * | 2016-08-31 | 2017-01-04 | 浙江百斯特化工有限公司 | A kind of emulsion-type high fatty alcohol defoamer |
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2017
- 2017-11-01 CN CN201711059021.0A patent/CN107651721A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08192001A (en) * | 1995-01-14 | 1996-07-30 | Sannopuko Kk | W/o emulsion type defoaming agent composition and defoaming method using the same |
| CN101130939A (en) * | 2007-09-27 | 2008-02-27 | 南京四新科技应用研究所有限公司 | Antifoam agent for wet part of papermaking |
| CN101759288A (en) * | 2009-12-10 | 2010-06-30 | 武汉大学 | Defoaming agent for removing foams in waste water aerobic activated sludge pond and preparation method and application thereof |
| CN101884852A (en) * | 2010-06-30 | 2010-11-17 | 南京四新科技应用研究所有限公司 | Method for improving properties of polyether defoaming agent |
| CN104874208A (en) * | 2014-12-08 | 2015-09-02 | 唐山三友硅业有限责任公司 | Acid and alkali-resistant organosilicone composite antifoaming agent and preparation method thereof |
| CN106178610A (en) * | 2016-08-29 | 2016-12-07 | 江苏精科嘉益工业技术有限公司 | A kind of higher alcohols emulsified antifoam agent and preparation method thereof |
| CN106283863A (en) * | 2016-08-31 | 2017-01-04 | 浙江百斯特化工有限公司 | A kind of emulsion-type high fatty alcohol defoamer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626476A (en) * | 2018-12-28 | 2019-04-16 | 中海油天津化工研究设计院有限公司 | A kind of universal defoaming agent of oil refining wastewater biochemical system and preparation method thereof |
| CN110935201A (en) * | 2019-12-27 | 2020-03-31 | 中海油天津化工研究设计院有限公司 | Defoaming agent for MVR evaporation system and preparation method thereof |
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Application publication date: 20180202 |