CN102690407B - Method for preparing alkyd resin from waste edible oil - Google Patents
Method for preparing alkyd resin from waste edible oil Download PDFInfo
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- CN102690407B CN102690407B CN 201210207490 CN201210207490A CN102690407B CN 102690407 B CN102690407 B CN 102690407B CN 201210207490 CN201210207490 CN 201210207490 CN 201210207490 A CN201210207490 A CN 201210207490A CN 102690407 B CN102690407 B CN 102690407B
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Abstract
The invention discloses a method for preparing alkyd resin from waste edible oil, which comprises the following steps: removing water from the waste edible oil; removing mechanical impurities from the waste edible oil subjected to water removal; regulating the color of the waste edible oil subjected to mechanical impurity removal; regulating the iodine value of the waste edible oil subjected to color regulation; adding 270Kg of regulated waste edible oil into a reaction kettle, adding 130Kg of pentaerythritol into the reaction kettle, introducing nitrogen, stirring, heating, adding an acidic catalyst, keeping the temperature for alcoholysis, adding 170Kg of phthalate anhydride, heating to 200 DEG C, keeping the temperature for 3 hours, and starting to measure the acid value and viscosity;and when the viscosity reaches below 15S and the acid value reaches below 12mg KOH/g, stopping heating, sucking into a diluting tank, cooling, adding a 200# paint solvent, cooling to below 80 DEG C, carrying out pressure filtration, and filling into barrels.
Description
Technical field
The present invention relates to a kind of method for preparing Synolac, especially relate to a kind of method that edible oil prepares Synolac of discarding of utilizing.
Background technology
The method of making Synolac mainly contains two kinds, that is: acid system and oil process.Acid system mainly is that lipid acid, glycerine, tetramethylolmethane, phthalate anhydride are added in the reactor in the lump, is warming up to specified temperature, carries out esterification; Oil process then needs polyvalent alcohols such as refining soya-bean oil, glycerine, tetramethylolmethane are warming up to 250 ℃ in the adding reactor earlier, and carries out alcoholysis under the condition that basic catalyst exists, and can add phthalate anhydride after alcoholysis is qualified and carry out next step esterification.Make in the process of Synolac at oil process, very strict to the requirement of refining soya-bean oil, its index is as follows:
| Project | Index | Unit |
| Color and luster | ≤3 | Fe-Co |
| Acid number | ≤1 | mgKOH∕g |
| Iodine number | 130-140 | gI∕100g |
Only reach the soya-bean oil of this standard, just can be directly used in the manufacturing Synolac.
All kinds of poor quality oils that discarded edible oil general reference exists in life are as the edible oil that reclaims, the frying oil that uses repeatedly etc.Discarded edible oil the largest source is the oil trap of large-scale restaurant, city water drain.Discarded edible oil also has the low-grade animal oil of quite a few mainly with the soya-bean oil that becomes sour with used soya-bean oil repeatedly to form.But discarded edible cast of oil is very dark, is generally 8-12#, and acid number is up to 30-50 mgKOH ∕ g, and because containing some as the animal oil of sheep, pig, ox etc., its iodine number is also on the low side, can't be directly used in the manufacturing Synolac.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method that edible oil prepares Synolac of discarding of utilizing.
For solving the problems of the technologies described above, a kind of method of utilizing discarded edible oil to prepare Synolac of the present invention may further comprise the steps:
(1), described discarded edible oil is removed the step of water;
(2), remove the step of mechanical impurity with removing discarded edible oil behind the water in the step (1);
(3), remove the step of the discarded edible cast of oil degree behind the mechanical impurity in the set-up procedure (2), make its color and luster degree≤3Fe-Co;
(4), the step of the iodine number of the discarded edible oil of color and luster degree≤3Fe-Co in the set-up procedure (3), make its iodine number reach 130-140 gI ∕ 100g;
(5), discarded edible oil 270 Kg that get iodine number in the step (4) and be 130-140 gI ∕ 100g add in the reactor, and then in the tetramethylolmethane adding reactor with 130Kg, feed nitrogen, open stirring, heat up, when still temperature rise to 120 ℃, stop stirring, add an acidic catalyst, open stirring then, continue to be warming up to 250 ℃, the insulation alcoholysis, to sampling and measuring 95% ethanol tolerance be 5 as end-point of alcoholysis, add the 170Kg phthalate anhydride after being cooled to 220 ℃ then, be warming up to 200 ℃ then, be incubated and begin to survey acid number after 3 hours, viscosity (viscosimetric analysis: sample: 200# paint solvent=11:9, measure with the form pipe), surveyed once every 0.5 hour, below viscosity reaches 15 S and acid number reach 12 mgKOH ∕ g when following, stop heating, the suction thinning tank cools off, and adds the 450Kg200# paint solvent, carries out press filtration when being cooled to below 80 ℃ again, barrel filling.
By adopting above method can utilize discarded edible oil to prepare Synolac, saved refining soya-bean oil.
Embodiment
The present invention is a kind of to utilize discarded edible oil to prepare the method for Synolac, may further comprise the steps:
(1), described discarded edible oil is removed the step of water;
(2), remove the step of mechanical impurity with removing discarded edible oil behind the water in the step (1);
(3), remove the step of the discarded edible cast of oil degree behind the mechanical impurity in the set-up procedure (2), make its color and luster degree≤3Fe-Co;
(4), the step of the iodine number of the discarded edible oil of color and luster degree≤3Fe-Co in the set-up procedure (3), make its iodine number reach 130-140 gI ∕ 100g;
(5), discarded edible oil 270 Kg that get iodine number in the step (4) and be 130-140 gI ∕ 100g add in the reactor, and then in the tetramethylolmethane adding reactor with 130Kg, feed nitrogen, open stirring, heat up, when still temperature rise to 120 ℃, stop stirring, add an acidic catalyst, open stirring then, continue to be warming up to 250 ℃, the insulation alcoholysis, to sampling and measuring 95% ethanol tolerance be 5 as end-point of alcoholysis, add the 170Kg phthalate anhydride after being cooled to 220 ℃ then, be warming up to 200 ℃ then, be incubated and begin to survey acid number after 3 hours, viscosity (viscosimetric analysis: sample: 200# paint solvent=11:9, measure with the form pipe), surveyed once every 0.5 hour, below viscosity reaches 15 S and acid number reach 12 mgKOH ∕ g when following, stop heating, the suction thinning tank cools off, and adds the 450Kg200# paint solvent, carries out press filtration when being cooled to below 80 ℃ again, barrel filling.
The step that described step (1) removes water with described discarded edible oil comprises that will discard edible oil earlier puts into thermostatic drying chamber, the temperature inside the box is transferred to 120 ℃ then, will discard edible oil at last and dry to constant weight.
The step that described step (2) will remove the discarded edible oil removal mechanical impurity behind the water comprises that will discard edible oil earlier adds in the reactor, carries out press filtration by filter plate, then until mechanical impurity is removed fully.
Described step (3) adjustment is removed the discarded edible cast of oil degree behind the mechanical impurity, the step of its color and luster degree≤3Fe-Co is comprised to remove earlier the discarded edible oil behind the mechanical impurity to add in the reactor, add an amount of activated carbon then and stir and finish decolouring, until its color and luster degree≤3Fe-Co.
Described step (4) is adjusted the iodine number of the discarded edible oil of color and luster degree≤3Fe-Co, the step that makes its iodine number reach 130-140 gI ∕ 100g comprises that elder generation adds the discarded edible oil of color and luster degree≤3Fe-Co in the reactor, add an amount of oleum lini or tung oil and stirring then, reach 130-140 gI ∕ 100g until its iodine number.
Claims (3)
1. one kind is utilized discarded edible oil to prepare the method for Synolac, it is characterized in that may further comprise the steps:
(1), described discarded edible oil is removed the step of water;
(2), remove the step of mechanical impurity with removing discarded edible oil behind the water in the step (1);
(3), the step of the discarded edible cast of oil degree behind the removal mechanical impurity in the set-up procedure (2), comprise that the discarded edible oil that will remove earlier behind the mechanical impurity adds in the reactor, add an amount of activated carbon then and stir and finish decolouring, make its color and luster degree≤3Fe-Co;
(4), the step of the iodine number of the discarded edible oil of color and luster degree≤3Fe-Co in the set-up procedure (3), comprise that elder generation adds the discarded edible oil of color and luster degree≤3Fe-Co in the reactor, add an amount of oleum lini or tung oil and stirring then, make its iodine number reach 130-140 gI ∕ 100g;
(5), discarded edible oil 270 Kg that get iodine number in the step (4) and be 130-140 gI ∕ 100g add in the reactor, and then in the tetramethylolmethane adding reactor with 130Kg, feed nitrogen, open stirring, heat up, when still temperature rise to 120 ℃, stop stirring, add an acidic catalyst, open stirring then, continue to be warming up to 250 ℃, the insulation alcoholysis, to sampling and measuring 95% ethanol tolerance be 5 as end-point of alcoholysis, add the 170Kg phthalate anhydride after being cooled to 220 ℃ then, be warming up to 200 ℃ then, be incubated and begin to survey acid number after 3 hours, viscosity, viscosimetric analysis: sample: 200# paint solvent=11:9, measure with the form pipe, surveyed once every 0.5 hour, below viscosity reaches 15 S and acid number reach 12 mgKOH ∕ g when following, stop heating, the suction thinning tank cools off, add the 450Kg200# paint solvent, carry out press filtration when being cooled to below 80 ℃ again, barrel filling.
2. the method for preparing Synolac according to the discarded edible oil of the described utilization of claim 1, it is characterized in that: the step that described step (1) removes water with described discarded edible oil comprises that will discard edible oil earlier puts into thermostatic drying chamber, the temperature inside the box is transferred to 120 ℃ then, will discard edible oil at last and dry to constant weight.
3. the method for preparing Synolac according to the discarded edible oil of the described utilization of claim 1, it is characterized in that: the step that described step (2) will remove the discarded edible oil removal mechanical impurity behind the water comprises that will discard edible oil earlier adds in the reactor, carry out press filtration by filter plate then, until mechanical impurity is removed fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210207490 CN102690407B (en) | 2012-06-22 | 2012-06-22 | Method for preparing alkyd resin from waste edible oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210207490 CN102690407B (en) | 2012-06-22 | 2012-06-22 | Method for preparing alkyd resin from waste edible oil |
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| Publication Number | Publication Date |
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| CN102690407A CN102690407A (en) | 2012-09-26 |
| CN102690407B true CN102690407B (en) | 2013-09-04 |
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| CN 201210207490 Expired - Fee Related CN102690407B (en) | 2012-06-22 | 2012-06-22 | Method for preparing alkyd resin from waste edible oil |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319701A (en) * | 2013-06-25 | 2013-09-25 | 桂林理工大学 | Drying alkyd resin prepared from discarded edible oil and application of drying alkyd resin |
| CN107955143B (en) * | 2017-12-06 | 2020-06-05 | 陕西宝塔山油漆股份有限公司 | Environment-friendly high-solid alkyd resin prepared from illegal cooking oil and synthesis process |
| CN111117749A (en) * | 2019-12-09 | 2020-05-08 | 上海阿道润滑科技有限公司 | High-lubrication low-foam micro-emulsion cutting fluid and preparation method thereof |
| CN113755082A (en) * | 2021-10-18 | 2021-12-07 | 无锡市造漆厂有限公司 | High-flash-point safe alkyd anticorrosive paint and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628968A (en) * | 2009-08-28 | 2010-01-20 | 安徽省金盾涂料有限责任公司 | Alcohol acid modified resin and preparation method thereof |
| CN102181255A (en) * | 2011-04-12 | 2011-09-14 | 沈阳化工大学 | Method for preparing hot-melt pressure sensitive adhesives by using illegal cooking oil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX2008009171A (en) * | 2006-01-20 | 2009-01-19 | Valspar Sourcing Inc | Production of polymers from waste cooking oil. |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628968A (en) * | 2009-08-28 | 2010-01-20 | 安徽省金盾涂料有限责任公司 | Alcohol acid modified resin and preparation method thereof |
| CN102181255A (en) * | 2011-04-12 | 2011-09-14 | 沈阳化工大学 | Method for preparing hot-melt pressure sensitive adhesives by using illegal cooking oil |
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| CN102690407A (en) | 2012-09-26 |
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