CN107857744A - A kind of epoxy aliphatic acid methyl ester plasticizer production process and obtained plasticizer - Google Patents
A kind of epoxy aliphatic acid methyl ester plasticizer production process and obtained plasticizer Download PDFInfo
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- CN107857744A CN107857744A CN201610840082.XA CN201610840082A CN107857744A CN 107857744 A CN107857744 A CN 107857744A CN 201610840082 A CN201610840082 A CN 201610840082A CN 107857744 A CN107857744 A CN 107857744A
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- methyl ester
- acid methyl
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- epoxy
- aliphatic acid
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- 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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- 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
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/32—Separation; Purification
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1515—Three-membered rings
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- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fats And Perfumes (AREA)
- Epoxy Compounds (AREA)
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Abstract
The invention discloses a kind of epoxy aliphatic acid methyl ester plasticizer production process, the step of including epoxy step, post-processing step and press filtration, also include stripping step between the post-processing step and press filtration step, feedback control is carried out to stripping step by detecting product flash-point size, the product flash-point is more than 195；The stripping step is carried out in stripper, and stripper temperature is 110~120 DEG C, and stripping pressure is 500~1500Pa.Present invention also offers a kind of plasticizer being prepared by above-mentioned production technology.Compared to old technique, when using the raw material of same batch inferior quality, flash-point can be brought up to more than 195 degrees Celsius by technique of the invention from 188 190 degrees Celsius, and cost of material is reduced while product quality is ensured.
Description
Technical field
The present invention relates to plasticizer preparing technical field, is specifically related to a kind of epoxy aliphatic acid methyl ester plasticizer production work
Skill and obtained plasticizer.
Background technology
Plasticiser, typically also referred to as plasticizer.Plasticizer is the high polymer material auxiliary agent being industrially widely used, in plastics
This material is added in processing, can strengthen its pliability, be easily worked, legal can be used for industrial use.Plasticiser is from change
Learn textural classification have aliphatic dibasic acid ester, Phthalates (including phthalate, terephthalic acid ester),
The more esters of gallic acid of benzene, benzoates, polyalcohol esters, chlorinated hydrocarbons, epoxies, citric acid ester type, polyesters etc. are a variety of.
The toxicity of epoxy plasticizer is smaller, and the packaging material of food and medicine has been permitted in many countries, is beautiful
Unique epoxy plasticizer that can be used for packaging material for food of state's FAD approval.It is the conventional auxiliary heat stabilizers of PVC,
They are used cooperatively with heat stabilizer higher synergy, suitable for soft, the flexible PVC particularly under sunlight
Product, it is generally not used for hard PVC product.
The toxicity of epoxy plasticizer is smaller, and the packaging material of food and medicine has been permitted in many countries, is beautiful
Unique epoxy plasticizer that can be used for packaging material for food of state's FAD approval.It is the conventional auxiliary heat stabilizers of PVC,
They are used cooperatively with heat stabilizer higher synergy, suitable for soft, the flexible PVC particularly under sunlight
Product, it is generally not used for hard PVC product.
Epoxy aliphatic acid methyl ester is at normal temperatures light yellow liquid, is the novel environment friendly using fatty acid methyl ester as primary raw material
Plasticizer, it is a kind of nontoxic, tasteless PVC plasticizer and stabilizer.Generally believe that it not only can be complete or partial in industry
Nontoxic, environmentally friendly PVC products are produced instead of OP plasticizer, for packaging for foodstuff, medical article material, toy and water supply line
Deng being also used as the nontoxic plasticizer and softening agent of celluosic resin and synthetic rubber, in the processing of product, add epoxy
Fatty acid methyl ester can significantly improve the physical property of product and extend ageing time, be used in combination with metallic stabilizers such as barium, cadmium, zinc
When, there is good synergy.In addition, because it also has good lubricity, compatibility and dispersion performance, table is also acted as
Face activating agent and application of dispersant are in the production industry such as epoxy coating and epoxy resin.
In the prior art, epoxy aliphatic acid methyl ester plasticizer production process washing, alkali cleaning, is washed mainly by epoxy, is taken off
Water, insulation, the step of press filtration seven composition, capital equipment have epoxy kettle, post-process kettle and filter press.Epoxy reaction enters in epoxy kettle
OK, alkali cleaning, wash, dehydration, incubation step is all carried out in kettle is post-processed.Because the fatty methyl esters as raw material is mostly at present
Formed by trench oil refinement, or be prepared by the complicated raw material of other compositions, cause product quality uncontrollable, existing process
Modulatory character is lacked to different material.
The content of the invention
The present invention is improved to existing process, there is provided a kind of epoxy aliphatic acid methyl ester plasticizer production process and is obtained
Plasticizer, Modulatory character of the device to de- light component is realized, the adaptability to different quality raw material is improved, will finally be plasticized
The flash-point of agent product brings up to more than 195 degrees Celsius from 188-190 degrees Celsius.
A kind of epoxy aliphatic acid methyl ester plasticizer production process, including epoxy step, post-processing step and the step of press filtration
Suddenly, stripping step is also included between the post-processing step and press filtration step, by detecting product flash-point size to stripping step
Feedback control is carried out, the product flash-point is more than 195 DEG C.
Preferably, the stripping step is carried out in stripper, stripper temperature is 110~120 DEG C, ensures material
Moisture content and the energy loss for reducing water vapour.Stripping pressure is 500~1500Pa.The program is selected, ensure that Srteam Stripping effect,
Selection vacuum condition can improve de- light ability, ensure product quality.
Preferably, the raw material used in heretofore described epoxy step is various fatty acid methyl ester raw material, such as
Commercially available fatty acid methyl ester finished product (can be various long chain fatty acids methyl esters or mixture, long chain fatty acids methyl esters is generally
C8~C18 fatty acid methyl esters, such as methyl hexadecanoate, 16 carbon methyl esters etc.), other fatty acid methyl esters also include gutter oil or
Various plants, animal fat etc..Preferably, the acid number of the fatty acid methyl ester raw material used in epoxy step for 0.1~
0.5, iodine number is 70~120, between color and luster is 40~180, between flash-point is 120~180 DEG C.As the further excellent epoxy
The fatty methyl ester feedstocks that step uses is gutter oils；Further solve in the prior art for being deposited when using gutter oil as raw material
Product flash-point do not reach the technical barrier of requirement.
The present invention is improved to existing process, i.e., a stripper is added after kettle is post-processed.Raw material is first in ring
Oxygen kettle carries out epoxy, enters back into post processing kettle and is washed, alkali cleaning, wash, be dehydrated, insulation, vapour is carried out subsequently into stripper
Carry, press filtration is carried out after having stripped.Technologic change mainly adds stripping section after section is post-processed.
Preferably, stripper column plate liquid level is below 35 centimetres, to control the surface-to-volume ratio of liquid, so as to control
Steam stripped effect is made, ensures final product result；Stripped vapor pressure is 3~4 Kilogram Force Per Square Centimeters.
, it is necessary to which the inlet amount per hour for stripping the initial material of processing is 2~3 tons, preferably, inlet amount in stripper
Feedback control is carried out according to treating capacity and product flash point requirements, for example under the conditions of flash point requirements are met, inlet amount can be use up can
The reaction time can be reduced greatly；The stripper tower hypomere stripping steam dosage is 2~3 ton hours.Water vapor pressure
Size and dosage have impact on the saturated vapor partial pressure of light component in the gas phase, can be adjusted by adjusting water vapor pressure and dosage
The de- light ability of stripper, ensure end product quality.
Preferably, the product flash-point is 195~198 DEG C.
The present invention has also carried a kind of epoxy aliphatic acid methyl ester plasticizer, as the epoxyfatty acid first described in any of the above-described scheme
Ester plasticiser production technology is prepared.
For products scheme, preferably, the product flash-point is 195~198 DEG C.
Stripper in the present invention is mainly by the regulation to inlet amount and stripping steam pressure, dosage come control tower
De- light component ability；Flash-point value by detecting product realizes the control to stripper operational factor.In bottom of towe after material stripping
Pressure-filtering tank is squeezed into by pump, is finished product after press filtration.
The production procedure of the present invention mainly by epoxy, washing, alkali cleaning, is washed, and is dehydrated, and insulation, press filtration is changed into epoxy, water
Wash, alkali cleaning, wash, be dehydrated, be incubated, stripping, press filtration.Main production equipments post-process kettle, filter press is changed into epoxy by epoxy kettle
Kettle, post-process kettle, stripper, filter press.
The original gutter oil of the present invention can select all kinds of poor oils present in life, such as hogwash fat of recovery, frying
Waste oil, food and waste grease caused by relevant enterprise etc..Or the oil interceptor of city large-scale restaurant sewer.Above-mentioned gutter oil
It originally can be used as the initiation material of the present invention by simple pretreatment.Changed according to product flash-point, in good time adjustment stripping ginseng
Number, finally can obtain the plasticizer product of high-quality.
Compared to old technique, when using the raw material of same batch inferior quality, technique of the invention can by flash-point from
188-190 degrees Celsius brings up to more than 195 degrees Celsius, and cost of material is reduced while product quality is ensured.
Embodiment
With reference to embodiment, the invention will be further described, so that those skilled in the art can become more apparent upon the present invention：
According to flow direction of material, the inventive system comprises epoxy kettle, post-processes kettle, stripper, wherein filter press, epoxy
Kettle, post processing kettle can be of the invention between post processing kettle and filter press completely using disclosed process conditions in the prior art
Add stripper.Stripper includes：(1) feed(raw material)inlet after epoxy and post processing, i.e. liquid inlet opening；(2) water steams
Vapour entrance, i.e. gas feed mouth；(3) gas discharge mouth；(4) liquid outlet opening, the material come out from liquid outlet opening are
The target product epoxy aliphatic acid methyl ester plasticizer of the present invention.
Embodiment 1
By taking 60 tons of day output as an example, ring is carried out by raw material of the gutter oil methyl esters of Zhejiang Eastriver Energy Technology Co., Ltd.
Oxidation, raw material acid number 0.15, iodine number 80, color and luster 90#, 169 DEG C of flash-point, the material after epoxy is dehydrated in kettle is post-processed to be finished,
2 hours are incubated under conditions of 110 DEG C, 1 kPa, stripper is then squeezed into by pump, inlet amount is 2 tons per hour, inlet amount root
Adjusted according to treating capacity and product flash point requirements, primarily to ensureing that column plate liquid level below 35 centimetres, controls the surface of liquid
Product and volume ratio, ensure final product result, so as to control steam stripped effect.Pressure of stripping tower is controlled at 1 kPa or so, this
Also for Srteam Stripping effect is ensured, vacuum condition can improve de- light ability.Temperature is controlled at 110 DEG C -115 by outer wall coil pipe
DEG C (temperature of column plate in stripper), ensures the moisture content of material and reduces the energy loss of water vapour.Tower hypomere stripping steam
Pressure is 3 kilograms per centimeters2, dosage is 2 ton hours, and the size and dosage of water vapor pressure have impact on light component in the gas phase
Saturated vapor partial pressure, the de- light ability of stripper can be adjusted by adjusting water vapor pressure and dosage.Stripper mainly passes through
Regulation to inlet amount and stripping steam carrys out the de- light component ability of control tower.Press filtration is squeezed into by pump in bottom of towe after material stripping
Tank, it is finished product after press filtration.
Embodiment 2
By taking 60 tons of day output as an example, entered using the fatty acid methyl ester that the clean U.S. bioenergy in Jiangsu reclaims Co., Ltd as raw material
Row epoxidation, raw material acid number 0.35, iodine number 95.94, color 150#, 172 DEG C of flash-point, the material after epoxy take off in kettle is post-processed
Water finishes, and is incubated 2 hours under conditions of 110 DEG C, 1 kPa, then squeezes into stripper by pump, and inlet amount is 3 tons per hour, is entered
Doses is adjusted according to treating capacity and product flash point requirements, primarily to ensureing that column plate liquid level below 35 centimetres, controls liquid
Surface-to-volume ratio, ensure final product result, so as to control steam stripped effect.Pressure of stripping tower is controlled at 1 kPa
Left and right, also for Srteam Stripping effect is ensured, vacuum condition can improve de- light ability for this.Temperature is controlled by outer wall coil pipe
115 DEG C -120 DEG C (temperature of column plate in stripper), ensure the moisture content of material and reduce the energy loss of water vapour.Tower hypomere vapour
Water lift steam pressure is 4 kilograms per centimeters2, dosage is 3 ton hours, and the size and dosage of water vapor pressure have impact on light component and exist
Saturated vapor partial pressure in gas phase, the de- light ability of stripper can be adjusted by adjusting water vapor pressure and dosage.Stripper
Mainly by the regulation to inlet amount and stripping steam come the de- light component ability of control tower.In bottom of towe by pump after material stripping
Pressure-filtering tank is squeezed into, is finished product after press filtration.
Embodiment 3
By taking 60 tons of day output as an example, using the refining fatty acid methyl ester of the Tangshan sharp marine growth diesel oil limited company of gold as
Raw material carries out epoxidation, and raw material acid number 0.22, iodine number 105, color and luster 65#, 175 DEG C of flash-point, the material after epoxy is in post processing kettle
Middle dehydration finishes, and is incubated 2 hours under conditions of 110 DEG C, 1 kPa, then squeezes into stripper by pump, inlet amount is per hour
2.5 tons, inlet amount is adjusted according to treating capacity and product flash point requirements, primarily to ensure column plate liquid level below 35 centimetres,
The surface-to-volume ratio of liquid is controlled, ensures final product result, so as to control steam stripped effect.Pressure of stripping tower controls
At 1 kPa or so, also for Srteam Stripping effect is ensured, vacuum condition can improve de- light ability for this.Temperature is by outer wall coil pipe
Control 115 DEG C -120 DEG C (temperature of column plate in stripper), ensure the moisture content of material and reduce the energy loss of water vapour.Tower
Hypomere stripping steam pressure is 3.5 kilograms per centimeters2, dosage is 2.5 ton hours, and the size and dosage of water vapor pressure influence
The saturated vapor partial pressure of light component in the gas phase, by adjusting water vapor pressure and dosage can adjust the de- light energy of stripper
Power.Stripper is mainly by the regulation to inlet amount and stripping steam come the de- light component ability of control tower.After material stripping
Pressure-filtering tank is squeezed into by pump in bottom of towe, is finished product after press filtration.
The identical condition of embodiment 1 will be used simultaneously, and difference is to cancel the step of stripping, after post processing directly
Filtering；Obtained product sample as a comparison.
Effect data, the plasticizer that embodiment 1-3 is prepared carry out flash-point test, as a result as shown in table 1：
Table 1
| Sample | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative sample |
| Flash-point/DEG C | 195~197 | 196~198 | 195~197 | 188-190 |
As shown in Table 1, using the method for the present invention, when using the raw material of same batch inferior quality, new work
Flash-point can be brought up to more than 195 degrees Celsius by skill from 188-190 degrees Celsius, and raw material is reduced while product quality is ensured
Cost.For the gutter oil raw material of complicated component, the stable plasticizer of property can be obtained.
Claims (7)
1. a kind of epoxy aliphatic acid methyl ester plasticizer production process, including the step of epoxy step, post-processing step and press filtration,
Characterized in that, also include stripping step between the post-processing step and press filtration step, by detecting product flash-point size pair
Stripping step carries out feedback control, and the product flash-point is more than 195；The stripping step is carried out in stripper, stripper
Temperature is 110~120 DEG C, and stripping pressure is 500~1500Pa.
2. epoxy aliphatic acid methyl ester plasticizer production process according to claim 1, it is characterised in that the epoxy step
The acid number of the middle fatty acid methyl ester raw material used is 0.1~0.5, and iodine number is 70~120, and flash-point is between 120~180 DEG C.
3. epoxy aliphatic acid methyl ester plasticizer production process according to claim 2, it is characterised in that stripper column plate liquid
Below 35 centimetres, stripped vapor pressure is 3~4 Kilogram Force Per Square Centimeters for position.
4. epoxy aliphatic acid methyl ester plasticizer production process according to claim 2, it is characterised in that in stripper, need
The inlet amount per hour for stripping the initial material of processing is 2~3 tons, and tower hypomere stripping steam dosage is 2~3 ton hours.
5. epoxy aliphatic acid methyl ester plasticizer production process according to claim 1, it is characterised in that the product flash-point
For 195~198 DEG C.
6. a kind of epoxy aliphatic acid methyl ester plasticizer, it is characterised in that as the epoxyfatty acid described in claim any one of 1-5
Methyl esters plasticizer production process is prepared.
7. epoxy aliphatic acid methyl ester plasticizer according to claim 6, it is characterised in that the product flash-point be 195~
198℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840082.XA CN107857744B (en) | 2016-09-22 | 2016-09-22 | Production process of epoxidized fatty acid methyl ester plasticizer and obtained plasticizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840082.XA CN107857744B (en) | 2016-09-22 | 2016-09-22 | Production process of epoxidized fatty acid methyl ester plasticizer and obtained plasticizer |
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| Publication Number | Publication Date |
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| CN107857744A true CN107857744A (en) | 2018-03-30 |
| CN107857744B CN107857744B (en) | 2020-03-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114634468A (en) * | 2022-04-02 | 2022-06-17 | 浙江嘉澳环保科技股份有限公司 | Deacidification process of epoxidized fatty acid methyl ester |
| CN114920716A (en) * | 2022-04-29 | 2022-08-19 | 浙江嘉澳环保科技股份有限公司 | Continuous production process and system of epoxy methyl ester |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104592169A (en) * | 2015-01-21 | 2015-05-06 | 吴俊荣 | Method for preparing epoxy fatty acid methyl ester by taking illegal cooking oil as raw material |
| CN104592170A (en) * | 2015-01-21 | 2015-05-06 | 吴俊荣 | Method for producing epoxy fatty acid methyl ester by taking illegal cooking oil as raw material |
| CN105175362A (en) * | 2015-07-14 | 2015-12-23 | 浙江嘉澳环保科技股份有限公司 | High-compatibility modified epoxy plasticizer preparation method and product thereof |
-
2016
- 2016-09-22 CN CN201610840082.XA patent/CN107857744B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104592169A (en) * | 2015-01-21 | 2015-05-06 | 吴俊荣 | Method for preparing epoxy fatty acid methyl ester by taking illegal cooking oil as raw material |
| CN104592170A (en) * | 2015-01-21 | 2015-05-06 | 吴俊荣 | Method for producing epoxy fatty acid methyl ester by taking illegal cooking oil as raw material |
| CN105175362A (en) * | 2015-07-14 | 2015-12-23 | 浙江嘉澳环保科技股份有限公司 | High-compatibility modified epoxy plasticizer preparation method and product thereof |
Non-Patent Citations (2)
| Title |
|---|
| 汪多仁: "《绿色油脂深加工产品》", 28 February 2007 * |
| 贾茂林等: "地沟油改性制备PVC用环氧脂肪酸甲酯增塑剂", 《中国塑料》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114634468A (en) * | 2022-04-02 | 2022-06-17 | 浙江嘉澳环保科技股份有限公司 | Deacidification process of epoxidized fatty acid methyl ester |
| CN114634468B (en) * | 2022-04-02 | 2024-06-04 | 浙江嘉澳环保科技股份有限公司 | Epoxy fatty acid methyl ester deacidification process |
| CN114920716A (en) * | 2022-04-29 | 2022-08-19 | 浙江嘉澳环保科技股份有限公司 | Continuous production process and system of epoxy methyl ester |
| CN114920716B (en) * | 2022-04-29 | 2024-04-02 | 浙江嘉澳环保科技股份有限公司 | Continuous production process and system of methyl epoxide |
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| CN107857744B (en) | 2020-03-10 |
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