CN102775597A - Method for synthesizing polyether glycol from waste oil by using ionic liquid as catalyst - Google Patents
Method for synthesizing polyether glycol from waste oil by using ionic liquid as catalyst Download PDFInfo
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- CN102775597A CN102775597A CN2012103069118A CN201210306911A CN102775597A CN 102775597 A CN102775597 A CN 102775597A CN 2012103069118 A CN2012103069118 A CN 2012103069118A CN 201210306911 A CN201210306911 A CN 201210306911A CN 102775597 A CN102775597 A CN 102775597A
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- waste oil
- polyether glycol
- ionic liquid
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- synthesizing polyether
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Abstract
The invention discloses a method for synthesizing polyether glycol from waste oil by using an ionic liquid as a catalyst, which comprises the following steps: vacuumizing illegal cooking oil at 110-130 DEG C for 3-6 hours, adding an adsorbent to adsorb impurities, and filtering to obtain refined waste oil; adding a mixture of waste oil or waste oil-vegetable oil mixture and polyalcohol or amine compound or mixture of both into a reactor as an initiator; adding a catalyst and oxyalkylene, and keeping the pressure at 0.05-0.6 MPa; and degassing and refining to obtain the polyether glycol. By using the illegal cooking oil as the substitute of oxyalkylene, the method can change waste illegal cooking oil into valuable substances, thereby greatly lowering the production cost; and the introduced ionic catalyst lowers the reaction temperature, enhances the catalytic efficiency, and is environment-friendly and easy to recycle, thereby satisfying the requirements for green chemistry.
Description
Technical field
The present invention relates to a kind of compound method of polyether glycol, the method for the environment amenable ionic-liquid catalyst catalysis of specifically a kind of usefulness waste oil synthesizing polyether glycol.
Background technology
Ionic liquid receives widely and using as a kind of environment amenable catalyzer and green solvent.Polyether glycol is the important source material of polyurethane material, extensively is used as the heat-insulation and heat-preservation material of city heat supply pipeline, petrochemical pipe, refrigerating plant, air-conditioned passenger train etc.Its preparation method generally makes as initiator and olefin oxide reaction with polyvalent alcohol; But this kind method production cost is higher; Especially under the situation that petroleum resources are in short supply day by day now; The surrogate of one of the by product of searching oil olefin oxide perhaps reduces its consumption, and the catalysis synthesizing polyether glycol has become the urgent task of current chemical circles.
The present invention has then synthesized a kind of alkali ionic liquid catalysis waste oil synthesizing polyether glycol.
Summary of the invention
The method that the purpose of this invention is to provide a kind of ionic liquid-catalyzed waste oil synthesizing polyether glycol; This method is selected the surrogate of sewer oil as olefin oxide; With ionic liquid as catalyzer; The catalysis synthesizing polyether glycol not only can make sewer oil turn waste into wealth, and has reduced production cost dramatically; And the introducing of ionic catalyst, reduced temperature of reaction, improved catalytic efficiency (, and environmentally friendly, be easy to recycle, meet the requirement of Green Chemistry.
The objective of the invention is to realize through following technical scheme:
A kind of method of ionic liquid-catalyzed waste oil synthesizing polyether glycol is characterized in that: this method is done catalyst waste oil synthesizing polyether glycol with alkali ionic liquid, may further comprise the steps:
1) at first sewer oil is vacuumized 3 ~ 6 h under 110 ~ 130 ℃, add sorbent material then, add-on is the 0.1-2% of sewer oil, stirs 1 ~ 3 h, and absorption impurity obtains the purified waste oil after filtering;
2) mixture of waste oil or waste oil and vegetables oil and polyvalent alcohol or aminated compounds or both mixtures are added in the reactor drum as initiator altogether, the mixture of waste oil or waste oil and vegetables oil: the weight ratio of polyvalent alcohol or aminated compounds or both mixtures is=1:20-1:5; The catalyzer that adds initiator gross weight 0.2% ~ 3% then adds the olefin oxide of 0.2 ~ 6 times of weight of initiator total amount altogether down at 80 ~ 130 ℃, and pressure maintains 0.05 ~ 0.6MPa; Outgas then, the refining polyether glycol that obtains.
Among the present invention, said catalyzer adopts one or more the mixture of chlorate and Pottasium Hydroxide, sodium hydroxide, amine basic cpd bmimOH alkali ionic liquid of imidazoles.Wherein bmim [Cl] is 1:1 ~ 1:2 with the amount of substance ratio of NaOH.The present invention recommends its amount of substance than being 1:1-1:1.5.Wherein bmim [Cl] is 1:1 ~ 1:2 with KOH amount of substance ratio.Wherein bmim [Cl] and CH
3NH
2Amount of substance is than being 1:1 ~ 1:3.5.Wherein epoxide is 3:1 ~ 5:1 with the ratio of the amount of substance of POCl3.
The inventive method synthetic main route is following:
Catalyzer 1
Formula 1
Catalyzer 2
Formula 2
Catalyzer 3
Formula 3
The present invention does catalyst waste oil synthesizing polyether glycol with alkali ionic liquid first, and the temperature of reaction of waste oil and olefin oxide is 70 ~ 100 ℃, has reduced energy consumption.
Beneficial effect of the present invention:
1), the total recovery of method products obtained therefrom of the present invention is 85 ~ 98%, can reach more than 90% usually.
2) the catalyst efficient of, using in the inventive method is high, easily separated.
3), the low in raw material cost and the technology of catalyzer is simple among the present invention, and the good industrialized prospect is arranged.
4), synthetic and Preparation of catalysts process environmentally safe of the present invention, meet the requirement of Green Chemistry.
The inventive method technology is simple, and the reaction times is short, and waste utilization rate is high, and is environmentally friendly.
Embodiment
Embodiment 1
A kind of method of ionic liquid-catalyzed waste oil synthesizing polyether glycol, this method is done catalyst waste oil synthesizing polyether glycol with alkali ionic liquid, may further comprise the steps:
At first sewer oil is vacuumized 3 ~ 6 h under 110 ~ 130 ℃, add the porousness magnesium silicate granule then as sorbent material, add-on is the 0.1-2% of sewer oil; Zaoyang, Hubei magnificent forever chemical industry ltd produces; Stir 1 ~ 3 h, absorption impurity obtains the purified waste oil after filtering;
The mixture of waste oil or waste oil and vegetables oil and polyvalent alcohol or aminated compounds or both mixtures are added in the reactor drum mixture of waste oil or waste oil and vegetables oil: polyvalent alcohol or aminated compounds or both mixtures (weight ratio)=1:20 ~ 1:5 as initiator altogether; The catalyzer that adds initiator gross weight 0.2% ~ 3% then adds the olefin oxide of 0.2 ~ 6 times of weight of initiator total amount altogether down at 80 ~ 130 ℃, and pressure maintains 0.05 ~ 0.6MPa; Outgas then, the refining polyether glycol that obtains.
Said catalyzer adopts one or more the mixture of chlorate and Pottasium Hydroxide, sodium hydroxide, amine basic cpd bmimOH alkali ionic liquid of imidazoles.Wherein bmim [Cl] is 1:1 ~ 1:2 with the amount of substance ratio of NaOH.The present invention recommends its amount of substance than being 1:1 ~ 1:1.5.Wherein bmim [Cl] is 1:1 ~ 1:2 with KOH amount of substance ratio.Wherein bmim [Cl] and CH
3NH
2Amount of substance is than being 1:1 ~ 1:3.5.
Preparation of Catalyst is following:
(100 mL) adds bmimCl13.92 g (0.1mol), CH in the three-necked flask that prolong (device for absorbing tail gas that connects suitable for reading) and TM are housed
2Cl
230 mL, heated and stirred adds NaOH 4.0 g again and reacts 5 h, stopped reaction, cooling, removing desolvates obtains the finished product.
Claims (6)
1. the method for an ionic liquid-catalyzed waste oil synthesizing polyether glycol, it is characterized in that: this method is done catalyst waste oil synthesizing polyether glycol with alkali ionic liquid, may further comprise the steps:
1) at first sewer oil is vacuumized 3 ~ 6 h under 110 ~ 130 ℃, add sorbent material then, add-on is the 0.1-2% of sewer oil, stirs 1 ~ 3 h, and absorption impurity obtains the purified waste oil after filtering;
2) mixture of waste oil or waste oil and vegetables oil and polyvalent alcohol or aminated compounds or both mixtures are added in the reactor drum as initiator altogether, the mixture of waste oil or waste oil and vegetables oil: the weight ratio of polyvalent alcohol or aminated compounds or both mixtures is=1:20-1:5; The catalyzer that adds initiator gross weight 0.2% ~ 3% then adds the olefin oxide of 0.2 ~ 6 times of weight of initiator total amount altogether down at 80 ~ 130 ℃, and pressure maintains 0.05 ~ 0.6MPa; Outgas then, the refining polyether glycol that obtains.
2. the method for ionic liquid-catalyzed waste oil synthesizing polyether glycol according to claim 1 is characterized in that: said catalyzer adopts one or more the mixture of chlorate and Pottasium Hydroxide, sodium hydroxide, amine basic cpd bmimOH alkali ionic liquid of imidazoles.
3. the method for ionic liquid-catalyzed waste oil synthesizing polyether glycol according to claim 2 is characterized in that: said bmim [Cl] is 1:1 ~ 1:2 with the amount of substance ratio of NaOH.
4. the method for ionic liquid-catalyzed waste oil synthesizing polyether glycol according to claim 2 is characterized in that: said bmim [Cl] is 1:1 ~ 1:2 with KOH amount of substance ratio.
5. the method for ionic liquid-catalyzed waste oil synthesizing polyether glycol according to claim 2 is characterized in that: said bmim [Cl] and CH
3NH
2Amount of substance is than being 1:1 ~ 1:3.5.
6. the method for ionic liquid-catalyzed waste oil synthesizing polyether glycol according to claim 1 is characterized in that: said sorbent material is the porousness magnesium silicate granule.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103069118A CN102775597A (en) | 2012-08-27 | 2012-08-27 | Method for synthesizing polyether glycol from waste oil by using ionic liquid as catalyst |
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|---|---|---|---|
| CN2012103069118A CN102775597A (en) | 2012-08-27 | 2012-08-27 | Method for synthesizing polyether glycol from waste oil by using ionic liquid as catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151209A (en) * | 2016-03-03 | 2017-09-12 | 中国石油化工股份有限公司 | A kind of method that utilization ionic liquid synthesizes tung oil polyalcohol |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775206A (en) * | 2010-02-04 | 2010-07-14 | 东南大学 | Degradable polyurethane semihard foam material and preparation method thereof |
| CN102336901A (en) * | 2011-08-03 | 2012-02-01 | 句容宁武新材料发展有限公司 | Method for preparing polyurethane polyether polyol by waste oil |
-
2012
- 2012-08-27 CN CN2012103069118A patent/CN102775597A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775206A (en) * | 2010-02-04 | 2010-07-14 | 东南大学 | Degradable polyurethane semihard foam material and preparation method thereof |
| CN102336901A (en) * | 2011-08-03 | 2012-02-01 | 句容宁武新材料发展有限公司 | Method for preparing polyurethane polyether polyol by waste oil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151209A (en) * | 2016-03-03 | 2017-09-12 | 中国石油化工股份有限公司 | A kind of method that utilization ionic liquid synthesizes tung oil polyalcohol |
| CN107151209B (en) * | 2016-03-03 | 2020-01-10 | 中国石油化工股份有限公司 | Method for synthesizing tung oil polyol by using ionic liquid |
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Application publication date: 20121114 |