CN210963992U - Glycerol triacetate water content separation device - Google Patents
Glycerol triacetate water content separation device Download PDFInfo
- Publication number
- CN210963992U CN210963992U CN201921898688.4U CN201921898688U CN210963992U CN 210963992 U CN210963992 U CN 210963992U CN 201921898688 U CN201921898688 U CN 201921898688U CN 210963992 U CN210963992 U CN 210963992U
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- ester
- pipe
- outlet
- vacuum dryer
- liquid
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- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000926 separation method Methods 0.000 title claims abstract description 29
- 235000013773 glyceryl triacetate Nutrition 0.000 title claims abstract description 25
- 229960002622 triacetin Drugs 0.000 title claims abstract description 25
- 150000002148 esters Chemical class 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000001087 glyceryl triacetate Substances 0.000 claims abstract description 7
- 239000010779 crude oil Substances 0.000 claims abstract description 4
- 238000005886 esterification reaction Methods 0.000 claims abstract description 4
- 238000004821 distillation Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005292 vacuum distillation Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920006221 acetate fiber Polymers 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- AFVOYXASQATZMK-UHFFFAOYSA-N 2,3-diacetyloxypropyl acetate hydrate Chemical compound O.CC(=O)OCC(COC(C)=O)OC(C)=O AFVOYXASQATZMK-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- -1 casting Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Fats And Perfumes (AREA)
Abstract
The utility model provides a glyceryl triacetate moisture separator relates to the separation technology field of material, include to the liquid separating mechanism that the ester water mixture that generates after the esterification reaction goes on separating, carry out dry drying mechanism to the crude oil after dividing the liquid to and vacuum distillation mechanism, the utility model discloses a set up multistage moisture separating mechanism, according to the moisture in the technical characteristic progressively separates the glyceryl triacetate, make it accord with the finished product standard requirement, avoid single moisture splitter to the side effect of product, the glyceryl triacetate water content after handling is far less than the requirement of product industry standard.
Description
Technical Field
The utility model relates to a fine chemical engineering technical field, concretely relates to glycerol triacetate moisture separator.
Background
The triacetyl glycerine is used for plasticizing acetate fiber, has good intermiscibility with acetate cellulose, nitrocellulose and ethyl cellulose, has good gelation effect and physiological inertia, and is especially suitable for being used as a gelling agent of cigarette filter tip cellulose diacetate. The function is to dissolve part of the cellulose acetate and combine the cellulose acetate irregularly to generate a network structure, thereby improving the filtering effect, and providing good elasticity, air permeability and proper hardness when being used as a cigarette filter; used as solvent and carrying agent in pharmaceutical production; the compound is used as a solvent and a fixative in the flavoring of spices; and also as a component of inks for printing on plastics and other non-absorbing surfaces. And is applied to industries such as cosmetics, casting, medicine, dye, cigarette and the like.
In the cigarette production process, the moisture of the triacetyl glycerine is strictly prevented from exceeding the standard, and the excessive moisture can influence the plasticizing effect and the hardness and the forming of the acetate fiber filter stick; moreover, the excessive moisture can cause the decomposition of the glycerol triacetate, so that the ester content is reduced, and meanwhile, acidic substances are generated, thereby influencing the smoking taste of cigarettes; a lower ester content will result in a lower curing efficiency; in addition, the use of glycerol triacetate with too high moisture inevitably increases the application amount and increases the cost, and the formed and cured time of the produced filter tip rod is prolonged and irregular, thereby influencing the process quality control.
In the production of glycerol triacetate, the post-treatment, particularly the dehydration process, has great influence on indexes such as product color, thermal stability and the like. The industrial standard YC 144-. The color of the sample is affected by too low water content of the cigarette triacetin, but the self-hydrolysis is easily promoted by too high water content, so that the ester content is reduced and the impurity content is increased. In the existing production process, the dehydration operation is mostly conventional distillation dehydration, materials are dehydrated in a distillation kettle 15 under reduced pressure, the product color is light yellow to yellow due to long distillation time, and partial oil-soluble impurities can enter finished products due to long-time heating, so that the thermal stability of the products is poor, and the problems that the raw materials close to a hot air end are excessively dehydrated and the raw materials far away from the hot air end are excessively dehydrated are easily caused.
Disclosure of Invention
In order to solve the problem, the utility model provides a glycerol triacetate moisture separator.
The utility model discloses a following technical scheme, a glycerol triacetate moisture separator, include to the ester water mixture that generates after the esterification reaction carry out the branch liquid mechanism that separates, carry out dry mechanism to the crude oil after dividing the liquid to and the vacuum distillation mechanism, its characterized in that:
the liquid separation mechanism comprises a separation tank body 1, a rotary pipe 2 is arranged at the bottom of the separation tank body 1, the rotary pipe 2 is vertically upward, the end part of the rotary pipe 2 is provided with a fork and is respectively connected with an ester overflow pipe 3 and a vent pipe 4 for preventing siphoning, a temporary storage tank 5 is arranged below the ester overflow pipe 3, a feeding pipe 6 for an ester-water mixture is arranged at the top of the separation tank body 1, an air inlet pipe 7 for facilitating blanking is arranged on the wall of the feeding pipe 6, the lower port of the feeding pipe 6 extends into the separation tank body 1 and is lower than the outlet of the ester overflow pipe 3, a water outlet 8 is arranged on the side wall of the separation tank body 1, the position of the water outlet 8 is higher than the upper port of the ester overflow pipe 3 and the lower port of the feeding pipe 6, after the ester-water mixture enters the separation tank body 1, the pressure change of the ester overflow pipe 3 and the water outlet pipe can be influenced respectively due to the fact that the density of the triacetin is 1.16 g/m L which is higher than the water density, water layer, the height change of the ester overflow pipe 3 and the water layer is known according to the principle of pressure and the sum of the pressure and the acceleration of the gravity and the acceleration of the ester layer, and the acceleration of the water layer, and the sum of the pressure and the acceleration of the water layer is known to realize the constant pressure and the sum.
The drying mechanism comprises a microwave vacuum dryer 9 and a vacuum pump 10, the microwave vacuum dryer 9 is connected with the temporary storage tank 5 of the liquid separating mechanism, and a material pump 11 is arranged between the microwave vacuum dryer 9 and the temporary storage tank; the outlet of the vacuum pump 10 is connected with a steam condenser 12, a pipeline between the steam condenser 12 and the liquid water collecting box 14 is provided with a humidity detector 13, the steam condenser 12 is connected with the inlet of the next mechanism, and the material outlet of the microwave vacuum dryer 9 is connected with the inlet of the next mechanism; the glycerol triacetate semi-finished product processed by the liquid separation mechanism is pumped into a microwave vacuum dryer 9, the vacuum pump 10 pumps the interior of the dryer into a vacuum state to a certain degree, the boiling point of water in the glycerol triacetate is reduced under a certain vacuum degree, the diffusion rate is accelerated, the glycerol triacetate can be dried under a low-temperature condition, the color change caused by high temperature can be prevented, meanwhile, microwave provides a heat source to directly heat the water in the glycerol triacetate, the problem of slow heat transfer rate depending on air under the vacuum state is solved, the drying time is shortened, and the production efficiency is improved; the moisture changed into steam is directly pumped out by the vacuum pump 10, the drying can be stopped when the moisture reaches a certain value and the humidity change is small through the humidity detector 13, the pumped water vapor enters the liquid water collecting box 14 after being condensed, the liquid water collecting box can be periodically detected, whether the triacetyl glycerine is vaporized and carried out is determined, and therefore the drying parameters are adjusted.
The reduced pressure distillation mechanism is connected with the microwave vacuum dryer 9 and comprises a distillation kettle 15, a heating system, a condensing system and an electric control system, wherein the distillation kettle 15 comprises a main body 151, a top cover 152, a feed inlet 153, a steam outlet 154 and a liquid outlet 155; the steam outlet 154 is connected with the condenser 16 through a pipeline, the condenser 16 is connected with the exhaust fan 17, and the top cover 152 is provided with an aeration port 156 which is connected with the high-pressure inert gas compressor 18.
Preferably, an ester temperature detector is arranged in the microwave vacuum dryer 9, so that the temperature of the glycerol triacetate in the microwave vacuum dryer 9 can be detected in real time, and the phenomenon that the color is changed due to overhigh temperature can be prevented.
Preferably, the distillation kettle 15 is internally provided with a stirring device 19 which is any one of a paddle type, an anchor type, a frame type, a spiral type, a rotating disc type and a magnetic type stirring device 19.
The utility model discloses a set up multistage moisture separating mechanism, according to the moisture in the process characteristic progressively separation triacetin, make it accord with finished product standard requirement, avoid single moisture splitter to the side effect of product, the triacetin water content after the processing is far less than product industry standard's requirement.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, a separation tank body 1, a rotary pipe 2, an ester overflow pipe 3, an emptying pipe 4, a temporary storage tank 5, a feeding pipe 6, an air inlet pipe 7, a water outlet 8, a microwave vacuum dryer 9, a vacuum pump 10, a material pump 11, a steam condenser 12, a humidity detector 13, a liquid water collecting tank 14, a distillation kettle 15, a main body 151, a top cover 152, a feeding hole 153, a steam outlet 154, a liquid outlet 155, an inflating hole 156, a condenser 16, an exhaust fan 17, an inert gas compressor 18 and a stirring device 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention; in the description of the present invention, the directions or positional relationships indicated are the directions or positional relationships shown on the drawings, and are only for convenience of description and simplification of description, and it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
As shown in fig. 1, a glycerol triacetate moisture separation device comprises a liquid separation mechanism for separating an ester-water mixture generated after an esterification reaction, a drying mechanism for drying crude oil after liquid separation, and a reduced pressure distillation mechanism, wherein the liquid separation mechanism comprises a separation tank body 1, the bottom of the separation tank body 1 is provided with a rotary pipe 2, the rotary pipe 2 is vertically upward, the end part of the rotary pipe is provided with a branch, the branch is respectively connected with an ester overflow pipe 3 and a vent pipe 4 for preventing siphoning, and a temporary storage tank 5 is arranged below the ester overflow pipe 3; a feeding pipe 6 of the ester-water mixture is arranged at the top of the separation tank body 1, an air inlet pipe 7 convenient for discharging is arranged on the wall of the feeding pipe 6, and the lower port of the feeding pipe 6 extends into the separation tank body 1 and is lower than the outlet of the ester overflow pipe 3; the side wall of the separation tank body 1 is provided with a water outlet 8, and the position of the water outlet 8 is higher than the upper port of the ester overflow pipe 3 and the lower port of the feeding pipe 6.
The drying mechanism comprises a microwave vacuum dryer 9 and a vacuum pump 10, the microwave vacuum dryer 9 is connected with the temporary storage tank 5 of the liquid separating mechanism, and a material pump 11 is arranged between the microwave vacuum dryer 9 and the temporary storage tank; the outlet of the vacuum pump 10 is connected with a steam condenser 12, a pipeline between the steam condenser 12 and the liquid water collecting tank 14 is provided with a humidity detector 13, the steam condenser 12 is connected with the inlet of the next mechanism, and the material outlet of the microwave vacuum dryer 9 is connected with the inlet of the next mechanism.
The reduced pressure distillation mechanism is connected with the microwave vacuum dryer 9 and comprises a distillation kettle 15, a heating system, a condensing system and an electric control system, wherein the distillation kettle 15 comprises a main body 151, a top cover 152, a feed inlet 153, a steam outlet 154 and a liquid outlet 155; the steam outlet 154 is connected with the condenser 16 through a pipeline, the condenser 16 is connected with the exhaust fan 17, and the top cover 152 is provided with an aeration port 156 which is connected with the high-pressure inert gas compressor 18.
An ester temperature detector is arranged in the microwave vacuum dryer 9, so that the temperature of the glycerol triacetate in the microwave vacuum dryer 9 can be detected in real time, and the phenomenon that the color is changed due to overhigh temperature can be prevented; a paddle stirrer 19 is provided in the distillation still 15.
Claims (3)
1. The utility model provides a glyceryl triacetate moisture separator, includes that the liquid separating mechanism that separates, carries out dry mechanism to the crude oil after dividing the liquid to the ester water mixture that generates after the esterification reaction to and reduced pressure distillation mechanism, its characterized in that:
the liquid separation mechanism comprises a separation tank body (1), a rotary pipe (2) is arranged at the bottom of the separation tank body (1), the rotary pipe (2) is vertically upward, a fork is arranged at the end part of the rotary pipe, the rotary pipe is respectively connected with an ester overflow pipe (3) and a vent pipe (4) for preventing siphoning, and a temporary storage tank (5) is arranged below the ester overflow pipe (3); a feeding pipe (6) for an ester-water mixture is arranged at the top of the separation tank body (1), an air inlet pipe (7) convenient for discharging is arranged on the wall of the feeding pipe (6), and the lower port of the feeding pipe (6) extends into the separation tank body (1) and is lower than the outlet of the ester overflow pipe (3); a water outlet (8) is arranged on the side wall of the separation tank body (1), and the position of the water outlet (8) is higher than the upper port of the ester overflow pipe (3) and the lower port of the feeding pipe (6);
the drying mechanism comprises a microwave vacuum dryer (9) and a vacuum pump (10), the microwave vacuum dryer (9) is connected with the temporary storage tank (5) of the liquid separating mechanism, and a material pump (11) is arranged between the microwave vacuum dryer (9) and the temporary storage tank; an outlet of the vacuum pump (10) is connected with a steam condenser (12), a pipeline between the steam condenser and the steam condenser is provided with a humidity detector (13), the steam condenser (12) is connected with a liquid water collecting box (14), and a material outlet of the microwave vacuum dryer (9) is connected with an inlet of the next mechanism;
the reduced pressure distillation mechanism is connected with the microwave vacuum dryer (9) and comprises a distillation kettle (15), a heating system, a condensing system and an electric control system, wherein the distillation kettle (15) comprises a main body (151), a top cover (152), a feed inlet (153), a steam outlet (154) and a liquid outlet (155); the steam outlet (154) is connected with a condenser (16) through a pipeline, the condenser (16) is connected with an exhaust fan (17), and the top cover (152) is provided with an inflation inlet (156) which is connected with a high-pressure inert gas compressor (18).
2. A glycerol triacetate moisture separating device according to claim 1, wherein an ester temperature detector is arranged in the microwave vacuum dryer (9) to detect the temperature of the glycerol triacetate in the microwave vacuum dryer (9) in real time.
3. A glycerol triacetate moisture separation device according to claim 1, wherein a stirring device (19) is arranged in the distillation still (15) and is any one of a paddle type, an anchor type, a frame type, a spiral type, a rotating disc type and a magnetic type stirring device (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921898688.4U CN210963992U (en) | 2019-11-06 | 2019-11-06 | Glycerol triacetate water content separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921898688.4U CN210963992U (en) | 2019-11-06 | 2019-11-06 | Glycerol triacetate water content separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210963992U true CN210963992U (en) | 2020-07-10 |
Family
ID=71446148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921898688.4U Expired - Fee Related CN210963992U (en) | 2019-11-06 | 2019-11-06 | Glycerol triacetate water content separation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210963992U (en) |
-
2019
- 2019-11-06 CN CN201921898688.4U patent/CN210963992U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |