CN213699853U - Glyceryl triacetate neutralization special equipment - Google Patents
Glyceryl triacetate neutralization special equipment Download PDFInfo
- Publication number
- CN213699853U CN213699853U CN202022417652.9U CN202022417652U CN213699853U CN 213699853 U CN213699853 U CN 213699853U CN 202022417652 U CN202022417652 U CN 202022417652U CN 213699853 U CN213699853 U CN 213699853U
- Authority
- CN
- China
- Prior art keywords
- stirring shaft
- alkaline
- glyceryl triacetate
- stirring
- tank body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model provides a special equipment for neutralizing glyceryl triacetate, which relates to the field of fine chemical engineering, and comprises an alkaline material feeding metering mechanism and a stirring neutralizing mechanism, wherein the alkaline material feeding metering mechanism and the stirring neutralizing mechanism are connected through a pipeline; after the neutral glyceryl triacetate finished in the previous procedure enters the premixing barrel (1) and is mixed with the alkaline substance, the mixture is conveyed to a stirring shaft (803) and is guided into the inner tank body (10) through a capillary (151) on an alkaline substance releasing blade (15); the added alkaline mixture is neutralized with the acidic residues in the triacetin. The utility model discloses a be connected alkaline material feeding mechanism and stirring neutralization mechanism, can be regularly quantitative provide the required alkaline material of neutralization reaction, guaranteed triacetin stability and preparation efficiency, set up gangbar (16) isotructure of guaranteeing valve (7) action uniformity in the equipment simultaneously, have simple structure, convenient to use, advantage easy and simple to operate.
Description
Technical Field
The utility model relates to a fine chemistry industry field, concretely relates to glyceryl triacetate neutralization professional equipment.
Background
Glyceryl triacetate, also known as glyceryl triacetate, is a colorless, odorless, transparent and viscous oily liquid, and is an intermediate for preparing many fine chemical products. It is mainly used as a plasticizer for cigarette filters in view of its ability to provide good elasticity, breathability and suitable hardness. At present, the glyceryl triacetate is counted by more than ten thousand tons in the annual production quantity and demand quantity of China, and becomes a very beautiful chemical product and daily necessities.
At present, the production of the triacetyl glycerine generally takes glacial acetic acid and glycerine as raw materials, benzene and the like as water-carrying agents, concentrated sulfuric acid as a catalyst, and the triacetyl glycerine is prepared by the procedures of esterification, acylation, refining, neutralization and the like, wherein the content of the triacetyl glycerine prepared by the method is about 99.5 percent. With the development of tobacco and fine chemical industry, higher requirements are put forward on the quality, particularly the purity, of the triacetin, such as indexes of the content, the acidity and the like. The above process has the disadvantage of high acidity. In the prior art documents, there is a way to further optimize the preparation process, for example, the triacetyl glycerine with qualified ester content and high acidity prepared in the above process is placed in a closed container, heated to 120 to 140 ℃ under relatively high vacuum degree, continuously vacuumized, and if necessary, introduced with a small amount of water vapor, N2 or CO2, so that most of acetic acid and odor can be removed, thereby obtaining the triacetyl glycerine with low acidity and light odor. The acidity content of the glycerol triacetate obtained by the method can be controlled within 0.003-0.015 percent generally, the smell is much smaller than that of the method, but the glycerol triacetate still has little smell, and the quality requirements that the acidity of the glycerol triacetate is less than 0.002 percent, the glycerol triacetate is completely odorless and the content of the glycerol triacetate is more than 99.5 percent, which are expected by enterprises in the flavor and fragrance industry, food additive factories and the like are not met.
Some foreign patent documents have reported methods for preparing triacetin with low acidity and no odor, such as U.S. Pat. No. 3108133, which discloses a method for preparing triacetin by distilling triacetin at high temperature and low pressure and then removing acetic acid and odor in the presence of water; german patent 156804 discloses a process for purifying triacetin by mixing a crude product of triacetin with methanol (or ethanol), heating to 140 ℃, distilling off excess methanol (or ethanol) until the temperature of the solution reaches the boiling point of triacetin; german patent 2900023 discloses a treatment method for deacidifying crude glycerol triacetate in water vapor at 0.003-0.014 atmospheric pressure and 100-130 ℃ for 0.5-5 hours, and continuously passing through CO2 and N2 to reduce acidity and remove odor. However, such methods have certain limitations, and either the method steps are complicated or the process is not easy to control, or the treatment cost is high, so that the method is not convenient for large-scale industrial production.
Disclosure of Invention
In order to solve the problem, the utility model provides a glyceryl triacetate neutralization special equipment, mainly used carry out neutralization with remaining acid impurity in the glyceryl triacetate preparation process, improve glyceryl triacetate's purity and quality.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the special equipment for neutralizing the glyceryl triacetate is characterized by comprising an alkaline substance feeding and metering mechanism and a stirring and neutralizing mechanism, wherein the alkaline substance feeding and metering mechanism and the stirring and neutralizing mechanism are connected through a pipeline;
the alkaline substance feeding mechanism comprises a premixing barrel 1, a weighing hopper 2, a bottom embedded stirrer 3, an overhead piston 4, a material suction pipe 5, a material discharge pipe 6 and valves 7 arranged on the material suction pipe 5 and the material discharge pipe 6; the top side of the premixing barrel 1 is connected with a weighing hopper 2, and alkaline substances are fed into the premixing barrel 1 through the weighing hopper 2; the overhead piston 4 moves upwards, neutral glyceryl triacetate neutralized in the previous procedure is pumped into the premixing barrel 1 through the material suction pipe 5 to be used as a solvent of an alkaline substance, the neutral glyceryl triacetate and the alkaline substance are uniformly mixed through the bottom embedded stirrer 3, after the mixing is completed, the overhead piston 4 is pressed downwards, and the alkaline mixture is conveyed to the stirring and neutralizing mechanism through the material discharge pipe 6.
The stirring and neutralizing mechanism comprises an overhead stirrer 8, a material conveying pipe 9, an inner-layer tank body 10, a material discharging pipe 11, an outer-layer tank body 12, a heat carrier feeding pipe 13, a heat carrier discharging pipe 14 and an alkaline matter releasing blade 15;
the overhead stirrer 8 comprises a motor 801, a transmission case 802 and a stirring shaft 803, wherein the transmission case 802 is connected with the stirring shaft 803, the stirring shaft 803 is of a hollow structure, extends downwards into the inner tank body 10 and is connected with the alkaline release blade 15, a discharge pipe 6 is sleeved at the end part of the stirring shaft 803 and is movably connected with the stirring shaft 803, and alkaline mixture is poured into the hollow structure of the stirring shaft 803 without rotating along with the stirring shaft 803; a gap is reserved between the inner tank body 10 and the outer tank body 12 to form a cavity, a heat carrier flows in the cavity in a circulating mode, heating and heat preservation are carried out on glyceryl triacetate in the inner tank body 10, and after heat is transferred, the heat carrier is discharged;
the stirring shaft 803 penetrates through the outer tank body 12 and the cavity, extends into the inner tank body 10, and keeps a distance of 5-10cm from the bottom, the alkaline releasing blade 15 is installed on the stirring shaft 803, the outer part of the stirring shaft is wrapped by a metal mesh, the inner part of the stirring shaft is provided with a capillary tube 151, and the capillary tube 151 is communicated with a hollow structure in the stirring shaft 803 and is used for conveying the alkaline mixture prepared in the premixing barrel 1.
Preferably, the alkali releasing blades 15 are 4 to 20 in number and are annularly and radially distributed on the stirring shaft 803.
Preferably, a driving gear 804 connected with the motor 801 and a driven gear 805 engaged with the driving gear 804 are arranged in the transmission case 802, and the stirring shaft 803 passes through the center of the driven gear 805.
Preferably, the two valves 7 arranged on the material suction pipe 5 and the material discharge pipe 6 have opposite action strokes, namely, rotate in the same direction, one valve 7 is opened, the other valve 7 is closed, and vice versa; the two valves 7 are connected with a linkage rod 16, the linkage rod 16 is connected with the overhead piston 4 through a lever 17, the overhead piston 4 moves up and down, the two valves 7 can be driven to simultaneously rotate in the same direction through the lever 17 and the linkage rod 16, and one valve 7 is ensured to be opened while the other valve is ensured to be closed.
The working principle is as follows: firstly, the neutral glyceryl triacetate finished in the previous procedure is sucked into a premixing barrel 1 by an overhead piston 4 through a material sucking pipe 5, the neutral glyceryl triacetate and the neutral glyceryl triacetate are uniformly mixed by a bottom embedded stirrer 3, after the mixing is finished, the overhead piston 4 is pressed downwards, an alkaline mixture is conveyed into a stirring shaft 803 through a material discharging pipe 6, the hollow structure of the stirring shaft 803 is communicated with a capillary 151 on an alkaline releasing blade 15, and the alkaline mixture is guided into an inner-layer tank body 10 of a stirring and neutralizing mechanism; meanwhile, new glyceryl triacetate enters the inner-layer tank body 10 from the material conveying pipe 9, a heat carrier also enters a cavity between the inner-layer tank body 10 and the outer-layer tank body 12, then the overhead stirrer 8 is started, the stirrer drives the alkaline substance release blades 15 to stir, the added alkaline mixture and acid residues in the glyceryl triacetate are subjected to neutralization reaction, and after the reaction is finished, a product is discharged through the discharge pipe 6.
Has the advantages that: the utility model discloses a be connected alkaline material feeding mechanism and stirring neutralization mechanism, can be regularly quantitative provide the required alkaline material of neutralization reaction, guaranteed triacetin stability and preparation efficiency, set up the gangbar 16 isotructures of guaranteeing valve 7 action uniformity in the equipment simultaneously, have simple structure, convenient to use, the easy advantage of operation.
Drawings
FIG. 1 is a schematic structural diagram of equipment dedicated to neutralization of glyceryl triacetate in example 1.
Fig. 2 is a schematic structural view of the alkali discharge blade.
FIG. 3 is a schematic structural diagram of equipment dedicated to neutralization of glyceryl triacetate in example 2.
Fig. 4 is a schematic view of the structure of the transmission case.
In the figure, a premixing barrel 1, a weighing hopper 2, a bottom embedded stirrer 3, a top piston 4, a material sucking pipe 5, a material discharging pipe 6, a valve 7, a top-mounted stirrer 8, a motor 801, a transmission case 802, a stirring shaft 803, a driving gear 804, a driven gear 805, a material conveying pipe 9, an inner layer tank body 10, a material discharging pipe 11, an outer layer tank body 12, a heat carrier feeding pipe 13, a heat carrier discharging pipe 14, an alkaline release blade 15, a capillary tube 151, a linkage rod 16 and a lever 17.
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.
Example 1
As shown in figures 1-2, a special equipment for neutralizing glyceryl triacetate comprises an alkaline substance feeding and metering mechanism and a stirring and neutralizing mechanism, which are connected through a pipeline;
the alkaline substance feeding mechanism comprises a premixing barrel 1, a weighing hopper 2, a bottom embedded stirrer 3, an overhead piston 4, a material suction pipe 5, a material discharge pipe 6 and valves 7 arranged on the material suction pipe 5 and the material discharge pipe 6; the top side of the premixing barrel 1 is connected with a weighing hopper 2, and alkaline substances are fed into the premixing barrel 1 through the weighing hopper 2; the overhead piston 4 moves up and down, neutral glyceryl triacetate neutralized in the previous procedure is pumped into the premixing barrel 1 through the material suction pipe 5 to be used as a solvent of an alkaline substance, the neutral glyceryl triacetate and the alkaline substance are uniformly mixed through the bottom embedded stirrer 3, after the mixing is completed, the overhead piston 4 is pressed down, and the alkaline mixture is conveyed to the stirring and neutralizing mechanism through the material discharge pipe 6.
The stirring and neutralizing mechanism comprises an overhead stirrer 8, a material conveying pipe 9, an inner-layer tank body 10, a material discharging pipe 6, an outer-layer tank body 12, a heat carrier feeding pipe 13, a heat carrier discharging pipe 14 and an alkaline matter releasing blade 15;
the overhead stirrer 8 comprises a motor 801, a transmission case 802 and a stirring shaft 803, wherein the transmission case 802 is connected with the stirring shaft 803, the stirring shaft 803 is of a hollow structure, extends downwards into the inner tank body 10 and is connected with an alkaline release blade 15, a discharge pipe 6 is sleeved at the end part of the stirring shaft 803 and is movably connected with the stirring shaft 803, and an alkaline mixture is poured into the hollow structure of the stirring shaft 803 and is cut without rotating along with the stirring shaft 803; a gap is reserved between the inner tank body 10 and the outer tank body 12 to form a cavity, a heat carrier circularly flows in the cavity, the glyceryl triacetate in the inner tank body 10 is heated and insulated, and after heat is transferred, the heat carrier is discharged; the stirring shaft 803 penetrates through the outer tank body 12 and the cavity, extends into the inner tank body 10, and keeps a distance of 5-10cm from the bottom, the alkaline releasing blade 15 is installed on the stirring shaft 803, the outer part of the alkaline releasing blade is wrapped by a metal mesh, a capillary tube 151 is embedded in the alkaline releasing blade, and the capillary tube 151 is communicated with a hollow structure in the stirring shaft 803 and is used for conveying the alkaline mixture prepared in the premixing barrel 1.
Example 2
As shown in fig. 3, the glycerol triacetate neutralizing special device has a structure which is basically the same as that of the glycerol triacetate neutralizing special device in the embodiment 1, except that a driving gear 804 connected with a motor 801 and a driven gear 805 engaged with the driving gear 804 are arranged in a transmission case 802, and a stirring shaft 803 passes through the center of the driven gear 805.
Example 3
As shown in FIG. 4, the structure of the equipment for neutralizing glycerol triacetate is basically the same as that of the equipment described in embodiment 1, and the difference is that the two valves 7 arranged on the material suction pipe 5 and the material discharge pipe 6 have opposite action strokes, namely, rotate in the same direction, one valve 7 is opened, the other valve 7 is closed, and vice versa; the two valves 7 are connected with a linkage rod 16, the linkage rod 16 is connected with the overhead piston 4 through a lever 17, the overhead piston 4 moves up and down, the two valves 7 can be driven to simultaneously rotate in the same direction through the lever 17 and the linkage rod 16, and one valve 7 is ensured to be opened while the other valve is ensured to be closed.
Claims (4)
1. The special equipment for neutralizing the glyceryl triacetate is characterized by comprising an alkaline substance feeding and metering mechanism and a stirring and neutralizing mechanism, wherein the alkaline substance feeding and metering mechanism and the stirring and neutralizing mechanism are connected through a pipeline;
the alkaline substance feeding mechanism comprises a premixing barrel (1), a weighing hopper (2), a bottom embedded stirrer (3), an overhead piston (4), a material sucking pipe (5), a material discharging pipe (6) and valves (7) arranged on the material sucking pipe (5) and the material discharging pipe (6); a weighing hopper (2) is connected to the side of the top of the premixing barrel (1), and alkaline substances are fed into the premixing barrel (1) through the weighing hopper (2); the overhead piston (4) moves upwards, neutral glyceryl triacetate neutralized in the previous procedure is pumped into the premixing barrel (1) through the material suction pipe (5), the neutral glyceryl triacetate and the neutral glyceryl triacetate are uniformly mixed through the bottom embedded stirrer (3), the overhead piston (4) is pressed downwards, and the alkaline mixture is conveyed to the stirring and neutralizing mechanism through the material discharge pipe (6);
the stirring and neutralizing mechanism comprises a top-mounted stirrer (8), a material conveying pipe (9), an inner-layer tank body (10), a material discharging pipe (11), an outer-layer tank body (12), a heat carrier feeding pipe (13), a heat carrier discharging pipe (14) and an alkaline matter releasing blade (15);
the overhead stirrer (8) comprises a motor (801), a transmission case (802) and a stirring shaft (803), wherein the transmission case (802) is connected with the stirring shaft (803), the stirring shaft (803) is of a hollow structure, downwardly extends into the inner tank body (10) and is connected with an alkaline release blade (15), a discharge pipe (6) is sleeved at the end part of the stirring shaft (803) and is movably connected with the stirring shaft (803), and an alkaline mixture is poured into the hollow structure of the stirring shaft (803) and does not rotate along with the stirring shaft (803); a gap is reserved between the inner tank body (10) and the outer tank body (12) to form a cavity, a heat carrier flows in the cavity in a circulating mode, heating and heat preservation are carried out on glyceryl triacetate in the inner tank body (10), and after heat is transferred, the heat carrier is discharged;
the stirring shaft (803) penetrates through the outer layer tank body (12) and the cavity, extends into the inner layer tank body (10), and keeps a distance of 5-10cm with the bottom, the alkaline releasing blade (15) is installed on the stirring shaft (803), the outside of the stirring shaft is wrapped by a metal mesh, the inside of the stirring shaft is provided with a capillary tube (151), and the capillary tube (151) is communicated with a hollow structure inside the stirring shaft (803) and is used for conveying alkaline mixture prepared in the premixing barrel (1).
2. The special equipment for glyceryl triacetate neutralization according to claim 1, wherein the number of the alkali releasing blades (15) is 4-20, and the alkali releasing blades are annularly and radially distributed on the stirring shaft (803).
3. The special equipment for glyceryl triacetate neutralization according to claim 1, wherein a driving gear (804) connected with the motor (801) and a driven gear (805) engaged with the driving gear (804) are arranged in the transmission box (802), and the stirring shaft (803) passes through the center of the driven gear (805).
4. The special equipment for glyceryl triacetate neutralization according to claim 1, wherein the action strokes of the two valves (7) arranged on the material suction pipe (5) and the material discharge pipe (6) are opposite; the two valves (7) are connected with a linkage rod (16), the linkage rod (16) is connected with the overhead piston (4) through a lever (17), the overhead piston (4) moves up and down, and the two valves (7) can be driven to simultaneously rotate in the same direction through the lever (17) and the linkage rod (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022417652.9U CN213699853U (en) | 2020-10-27 | 2020-10-27 | Glyceryl triacetate neutralization special equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022417652.9U CN213699853U (en) | 2020-10-27 | 2020-10-27 | Glyceryl triacetate neutralization special equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213699853U true CN213699853U (en) | 2021-07-16 |
Family
ID=76800418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022417652.9U Active CN213699853U (en) | 2020-10-27 | 2020-10-27 | Glyceryl triacetate neutralization special equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213699853U (en) |
-
2020
- 2020-10-27 CN CN202022417652.9U patent/CN213699853U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213699853U (en) | Glyceryl triacetate neutralization special equipment | |
| CN103599546A (en) | Renewable calcium tablet filler containing modified starch | |
| CN111359241A (en) | Skin care products are enrichment facility for plant extract | |
| CN117101583A (en) | Reation kettle convenient to liquid feeding | |
| CN102796620B (en) | Fixed bed-based continuous catalytic esterification production method | |
| CN116617986A (en) | Continuous pipeline oxidation equipment and process for preparing nitrobenzoic acid | |
| CN106833909A (en) | The continuous ester exchange process with pressure of waste oil autoclave | |
| CN1958543A (en) | Method for preparing fat to control oxidation product by using gas lift type common loop reactor | |
| CN101016466A (en) | Method of preparing biological diesel oil from plant bitumen | |
| CN104492359A (en) | Feeding-controllable automatic feeding type reaction kettle | |
| CN213102193U (en) | Reation kettle is used in flucytosine production | |
| CN220677848U (en) | Production equipment for producing kitchen safety fuel fatty acid methyl ester by using cottonseed oil | |
| CN102992960A (en) | Preparation method of terpilenol | |
| CN112374961A (en) | Four alkali wash deacidification devices of carbon behind ether | |
| CN218281682U (en) | Vacuum reaction kettle capable of avoiding residual materials on inner wall | |
| CN211595463U (en) | Micro-negative pressure calcification device | |
| CN213771948U (en) | Oleic acid fractionation and decoloration device | |
| CN220573355U (en) | A configuration cauldron for preparing sodium nitrite solution | |
| CN214598445U (en) | Chemical reaction tank is used in production of medicine intermediate | |
| CN219239304U (en) | Dephenolizing device for resin product preparation | |
| CN211562969U (en) | Continuous natural wax calcification equipment | |
| CN210332619U (en) | A reation kettle for producing benzoyl chloride | |
| CN220737563U (en) | Reaction kettle for preparing hydrogen chloride | |
| CN109837161A (en) | New-type compound lard continuous saponification process devices and methods therefor | |
| CN106588646A (en) | Method for preparing glyceryl triacetate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |