CN105254596A - Preparation method for epoxidized soybean oil - Google Patents
Preparation method for epoxidized soybean oil Download PDFInfo
- Publication number
- CN105254596A CN105254596A CN201510594417.XA CN201510594417A CN105254596A CN 105254596 A CN105254596 A CN 105254596A CN 201510594417 A CN201510594417 A CN 201510594417A CN 105254596 A CN105254596 A CN 105254596A
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- soybean oil
- tank
- hydrogen peroxide
- preparation
- pump
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/14—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with organic peracids, or salts, anhydrides or esters thereof
- C07D301/16—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with organic peracids, or salts, anhydrides or esters thereof formed in situ, e.g. from carboxylic acids and hydrogen peroxide
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/38—Compounds containing oxirane rings with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D303/40—Compounds containing oxirane rings with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals by ester radicals
- C07D303/42—Acyclic compounds having a chain of seven or more carbon atoms, e.g. epoxidised fats
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
- Epoxy Compounds (AREA)
Abstract
The invention provides a preparation method for epoxidized soybean oil. The preparation method comprises the following steps: (1) oxidation, wherein a raw material soybean oil in a tank truck is pumped into a soybean oil feed tank and a soybean oil elevated tank via a fourth pump, is quantified and is then added into a reaction vessel, hydrogen peroxide is pumped into a hydrogen peroxide elevated tank via a first pump, is quantified and is then added into the reaction vessel drop by drop, a catalyst sulfuric acid is added into the reaction vessel drop by drop via the hydrogen peroxide elevated tank, formic acid is added into the reaction vessel in one step, and prepared crude epoxidized soybean oil is discharged into an epoxy buffer tank; and (2) separation. The preparation method provided by the invention adopts a continuous discharging manner of the finished product; the raw materials consisting of soybean oil, hydrogen peroxide and formic acid become a semi-finished product after reaction in the oxidation reaction vessel; the semi-finished product undergoes neutralization by alkali lye and separation by a disc separator so as to separate moisture and impurities in the semi-finished product; and the finished product is continuously discharged.
Description
Technical field
The present invention relates to a kind of preparation method, specifically the preparation method that has of a kind of epoxy soybean.
Background technology
Epoxy soybean oil is that a kind of most popular nontoxic polyvinyl chloride softening agent is held concurrently stablizer, good with PCV resin compatible, volatility is low, there is excellent thermostability and light stability, water tolerance and oil-proofness are also good, and the preparation method of epoxy soybean oil has multiple, is mainly ester-interchange method, ozonization method, hydroformylation method, but this several method reaction conditions is high, is not suitable for suitability for industrialized production.
Summary of the invention
In order to solve the problem, the invention provides a kind of reaction conditions low, be applicable to suitability for industrialized production and want and the preparation method that has of the epoxy soybean of continuous discharge.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
The present invention is a kind of preparation method of epoxy soybean oil, and preparation method comprises the steps:
(1) be oxidized: raw soybeans oil is through there being groove tank car to be evacuated in soybean oil head tank, soybean oil header tank through the 4th pump, and soybean oil is quantitatively thrown in reactor;
Hydrogen peroxide unloads to the storage of hydrogen peroxide storage tank from hydrogen peroxide tank car through the first pump, and hydrogen peroxide pumps into after the quantitative hydrogen peroxide of hydrogen peroxide header tank through the first pump and instills reactor, and catalyst sulfuric acid is added dropwise to reactor by hydrogen peroxide header tank, does not need to stir;
Formic acid unloads to formic acid tank, the metering of formic acid header tank, by disposable for formic acid input reactor through the 3rd pump from formic acid tank car;
After hydrogen peroxide is added dropwise to complete, start heat-insulation pressure keeping, then the thick epoxy soybean oil of preparation is unloaded in epoxy surge tank;
(2) be separated: after the thick epoxy soybean oil in epoxy surge tank in step (1) is pumped into well heater by the second pump, enter line mixer;
Alkali lye in alkali-prepared tank is pumped into line mixer by the first volume pump, mixes with thick epoxy soybean oil;
In hot-water cylinder, hot water enters line mixer by the second volume pump together through under meter and thick epoxy soybean oil and is separated to disk centrifuge, and waste water enters isolation tank, and obtained material enters drying heater;
Drying heater material out enters vacuum drying tower, pumps into finished product medial launder by canned-motor pump through filter and condenser, and the material in finished product medial launder pumps into barrelling after epoxy soybean oil finished pot.
Further improvement of the present invention is: in step (1) oxidation step, and it is 7-8 hour that hydrogen peroxide is added dropwise to complete the rear heat-insulation pressure keeping time, and in insulating process, temperature of charge is 96-98 DEG C, still internal pressure ﹤ 0.1Mpa.
Further improvement of the present invention is: in step (1) oxidation step, and it is 500 cubes that the tank of soybean oil head tank holds, built-in stainless steel steel disk pipe, and heat interchanging area is 20 squares, and outside is incubated.
Further improvement of the present invention is: in step (1) oxidation step, and it is 30 minutes that soybean oil quantitatively throws into the release time in reactor.
The invention has the beneficial effects as follows: preparation method's finished product discharge method of epoxy soybean oil provided by the invention is contiguity, raw soybeans oil, hydrogen peroxide, formic acid are work in-process after the reaction of oxidizing reactor, the neutralization of work in-process through alkali lye, the separation of disk centrifuge, moisture in work in-process and impurity sub-argument are gone out, finished product continuous discharge.
The preparation method of epoxy soybean oil of the present invention is simpler, to working condition and catalytic condition less demanding, but the still epoxy soybean oil of energy production department high-quality, security is high, reaction conditions is gentle, and the time is short, Reaction time shorten, improves the quality of product.
Embodiment
In order to deepen the understanding of the present invention, be described in further detail the present invention below in conjunction with embodiment, this embodiment, only for explaining the present invention, not forming protection scope of the present invention and limiting.
As shown in the Examples, the present invention is a kind of preparation method of epoxy soybean oil, and described preparation method comprises the steps:
(1) be oxidized: raw soybeans oil is through there being groove tank car to be evacuated in soybean oil head tank, soybean oil header tank through the 4th pump, soybean oil is quantitatively thrown in reactor, wherein the tank of soybean oil head tank holds is 500 cubes, built-in stainless steel steel disk pipe, heat interchanging area is 20 squares, outside insulation, reactor about 12 tons of every stills, it is 30 minutes that soybean oil quantitatively throws into the release time in reactor;
Hydrogen peroxide unloads to the storage of hydrogen peroxide storage tank from hydrogen peroxide tank car through the first pump, and hydrogen peroxide pumps into after the quantitative hydrogen peroxide of hydrogen peroxide header tank through the first pump and instills reactor, and catalyst sulfuric acid is added dropwise to reactor by hydrogen peroxide header tank, does not need to stir;
Formic acid unloads to formic acid tank, the metering of formic acid header tank from formic acid tank car through the 3rd pump, and by disposable for formic acid input reactor, the input amount of formic acid is about 500kg;
After hydrogen peroxide is added dropwise to complete, start heat-insulation pressure keeping, it is 7-8 hour that hydrogen peroxide is added dropwise to complete the rear heat-insulation pressure keeping time, in insulating process, temperature of charge is 96-98 DEG C, still internal pressure ﹤ 0.1Mpa, then unloads in epoxy surge tank by the thick epoxy soybean oil of preparation, controls mainly to control exhaust by automatic air release valve, manual exhaust and rupture disk are auxiliary, and Special Circumstances can open standby valve pressure release;
(2) be separated: after the thick epoxy soybean oil in epoxy surge tank in step (1) is pumped into well heater by the second pump, enter line mixer;
Alkali lye in alkali-prepared tank is pumped into line mixer by the first volume pump, mixes with thick epoxy soybean oil;
In hot-water cylinder, hot water enters line mixer by the second volume pump together through under meter and thick epoxy soybean oil and is separated to disk centrifuge, and waste water enters isolation tank, and obtained material enters drying heater;
Drying heater material out enters vacuum drying tower, pumps into finished product medial launder by canned-motor pump through filter and condenser, and the material in finished product medial launder pumps into barrelling after epoxy soybean oil finished pot.
Preparation method's finished product discharge method of epoxy soybean oil provided by the invention is contiguity, raw soybeans oil, hydrogen peroxide, formic acid are work in-process after the reaction of oxidizing reactor, the neutralization of work in-process through alkali lye, the separation of disk centrifuge, moisture in work in-process and impurity sub-argument are gone out, finished product continuous discharge.
Claims (4)
1. a preparation method for epoxy soybean oil, is characterized in that: described preparation method comprises the steps:
(1) be oxidized: raw soybeans oil is through there being groove tank car to be evacuated in soybean oil head tank, soybean oil header tank through the 4th pump, and soybean oil is quantitatively thrown in reactor;
Hydrogen peroxide unloads to the storage of hydrogen peroxide storage tank from hydrogen peroxide tank car through the first pump, and hydrogen peroxide pumps into after the quantitative hydrogen peroxide of hydrogen peroxide header tank through the first pump and instills reactor, and catalyst sulfuric acid is added dropwise to reactor by hydrogen peroxide header tank, does not need to stir;
Formic acid unloads to formic acid tank, the metering of formic acid header tank, by disposable for formic acid input reactor through the 3rd pump from formic acid tank car;
After hydrogen peroxide is added dropwise to complete, start heat-insulation pressure keeping, then the thick epoxy soybean oil of preparation is unloaded in epoxy surge tank;
(2) be separated: after the thick epoxy soybean oil in epoxy surge tank in step (1) is pumped into well heater by the second pump, enter line mixer;
Alkali lye in alkali-prepared tank is pumped into line mixer by the first volume pump, mixes with thick epoxy soybean oil;
In hot-water cylinder, hot water enters line mixer by the second volume pump together through under meter and thick epoxy soybean oil and is separated to disk centrifuge, and waste water enters isolation tank, and obtained material enters drying heater;
Drying heater material out enters vacuum drying tower, pumps into finished product medial launder by canned-motor pump through filter and condenser, and the material in finished product medial launder pumps into barrelling after epoxy soybean oil finished pot.
2. the preparation method of a kind of epoxy soybean oil according to claim 1, it is characterized in that: in step (1) oxidation step, it is 7-8 hour that hydrogen peroxide is added dropwise to complete the rear heat-insulation pressure keeping time, and in insulating process, temperature of charge is 96-98 DEG C, still internal pressure ﹤ 0.1Mpa.
3. the preparation method of a kind of epoxy soybean oil according to claim 1, is characterized in that: in described step (1) oxidation step, and it is 500 cubes that the tank of soybean oil head tank holds, built-in stainless steel steel disk pipe, and heat interchanging area is 20 squares, and outside is incubated.
4. the preparation method of a kind of epoxy soybean oil according to claim 1, it is characterized in that: in described step (1) oxidation step, it is 30 minutes that soybean oil quantitatively throws into the release time in reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594417.XA CN105254596A (en) | 2015-09-18 | 2015-09-18 | Preparation method for epoxidized soybean oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594417.XA CN105254596A (en) | 2015-09-18 | 2015-09-18 | Preparation method for epoxidized soybean oil |
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| Publication Number | Publication Date |
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| CN105254596A true CN105254596A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510594417.XA Pending CN105254596A (en) | 2015-09-18 | 2015-09-18 | Preparation method for epoxidized soybean oil |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824368A (en) * | 2010-04-14 | 2010-09-08 | 太仓市天盈化工有限公司 | Method for preparing epoxidized soybean oil |
| CN102061222A (en) * | 2009-11-12 | 2011-05-18 | 广州市海珥玛植物油脂有限公司 | Method for continuously producing epoxidized soybean oil |
| CN102553729A (en) * | 2011-12-29 | 2012-07-11 | 上海航发机械有限公司 | Combined nozzle of disc type separator |
| CN102978010A (en) * | 2012-12-03 | 2013-03-20 | 浙江嘉澳环保科技股份有限公司 | Process method for producing epoxidized soybean oil by using crude soybean oil as raw material |
| CN104549105A (en) * | 2014-12-31 | 2015-04-29 | 丹阳市助剂化工厂有限公司 | Efficient reactor for production and processing of epoxy soybean oil |
-
2015
- 2015-09-18 CN CN201510594417.XA patent/CN105254596A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061222A (en) * | 2009-11-12 | 2011-05-18 | 广州市海珥玛植物油脂有限公司 | Method for continuously producing epoxidized soybean oil |
| CN101824368A (en) * | 2010-04-14 | 2010-09-08 | 太仓市天盈化工有限公司 | Method for preparing epoxidized soybean oil |
| CN102553729A (en) * | 2011-12-29 | 2012-07-11 | 上海航发机械有限公司 | Combined nozzle of disc type separator |
| CN102978010A (en) * | 2012-12-03 | 2013-03-20 | 浙江嘉澳环保科技股份有限公司 | Process method for producing epoxidized soybean oil by using crude soybean oil as raw material |
| CN104549105A (en) * | 2014-12-31 | 2015-04-29 | 丹阳市助剂化工厂有限公司 | Efficient reactor for production and processing of epoxy soybean oil |
Non-Patent Citations (2)
| Title |
|---|
| 温占平: "环氧大豆油生产新技术", 《河北化工》 * |
| 郑荣彬等: "碟式分离机的开发与应用", 《粮油加工与食品机械》 * |
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Application publication date: 20160120 |
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