CN219441627U - Efficient esterification reactor for glyceryl triacetate - Google Patents

Abstract

The utility model discloses a high-efficiency esterification reactor for glyceryl triacetate, which relates to the technical field of glyceryl triacetate preparation and comprises a reaction table, wherein a reaction barrel is fixedly arranged on the upper end surface of the reaction table, a feed inlet is arranged on one side of the upper end of the reaction barrel, a discharge outlet is also arranged on the lower end of the side of the reaction barrel, a stirring assembly for stirring materials is arranged in the reaction barrel, the stirring assembly comprises a stirring motor and a stirring rod, a plurality of stirring blades are circumferentially distributed on the surface of the stirring rod, and a heating component matched with the stirring assembly for heating the materials is also arranged in the reaction barrel. According to the utility model, through the arranged heat conducting oil liquid inlet and the heat conducting oil liquid outlet, heat conducting oil can enter the stirring rod through the heat conducting oil liquid inlet and is finally guided out through the plurality of stirring blades, so that the heat conducting oil is fully contacted with the material, the heating is more sufficient, and the heating and stirring effects of the material are improved.

Description

Efficient esterification reactor for glyceryl triacetate

Technical Field

The utility model relates to the technical field of preparation of glyceryl triacetate, in particular to a high-efficiency esterification reactor of glyceryl triacetate.

Background

The glyceryl triacetate is also called as Glyceryl Triacetate (GTA), which is called as triglycol for short, is colorless, odorless, transparent and viscous oily liquid, and is an intermediate for preparing a plurality of fine chemical products. The boiling point of the glyceryl triacetate is 258-260 at normal temperature and normal pressure, the density is 1.16g/mL, the refractive index is 1.429-1.431, the glyceryl triacetate can be mixed with most organic solvents such as ethanol, diethyl ether, benzene, chloroform and the like, but the glyceryl triacetate is insoluble in mineral oil and slightly soluble in water, and the solubility in water at 25 ℃ is only 5.9g/100mL. Can be used as soil hardening agent, bactericide for vegetables and fruits, perfume fixing agent, cleaning disinfectant, food additive, etc. It is mainly used as a plasticizer for cigarette filters in view of its good elasticity, breathability and suitable hardness. At present, the production and the demand of the glyceryl triacetate in China are more than ten thousands of tons each year, and the glyceryl triacetate becomes a very attractive chemical product and daily necessities.

At present, a liquid catalyst is mostly adopted in a glyceryl triacetate esterification reactor, the liquid catalyst is added into the esterification reactor along with materials, so that the problem of catalyst dilution is solved, and most of the esterification reactor is not stirred, so that the uniformity of reactant concentration is influenced, wherein Chinese patent publication No. CN209952873U discloses a glyceryl triacetate efficient esterification reactor, wherein heat conduction oil heated to a set temperature is conveyed into a cavity between an inner barrel and an outer barrel through a heat conduction oil inlet, the heat conduction oil is input into the heat conduction oil inlet and output to form a circulation, then a stirrer is started, the stirrer drives a stirring blade to stir, a solid catalyst in the stirring blade starts to react with the materials, after the process is finished, a discharge port at the bottom of the outer barrel is opened, the materials are discharged, but the heat conduction oil only passes through a gap between the outer barrel and the inner barrel, and most of the materials are concentrated in the middle position, so that the heat conduction oil has low heating utilization efficiency, and the materials in the inner barrel cannot be heated.

Disclosure of Invention

The utility model aims at: in order to solve the problems, a high-efficiency esterification reactor for glyceryl triacetate is provided.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a high-efficient esterification reactor of triacetin, includes the reaction platform, reaction platform up end fixed mounting has the reaction bucket, reaction bucket upper end one side is equipped with the feed inlet, reaction bucket side lower extreme still is equipped with the discharge gate, reaction bucket internally mounted has the stirring subassembly that is used for stirring the material, the stirring subassembly includes fixed mounting at the stirring motor at reaction bucket top and rotates the puddler that sets up inside the reaction bucket, puddler and stirring motor output shaft fixed connection, puddler surface still circumference distributes has a plurality of stirring leaves, the inside hollow structure that specifically is of puddler, the inside heating element that is used for heating the material with the stirring subassembly cooperation still is equipped with of reaction bucket.

As a further description of the above technical solution:

the cooling part comprises a heat conducting oil liquid inlet and a heat conducting oil liquid outlet, the heat conducting oil liquid inlet is communicated with the bottom of the stirring rod, the heat conducting oil liquid outlet is arranged above the inside of the reaction barrel, one end of the heat conducting oil liquid outlet penetrates through the side wall of the reaction barrel and extends to the outer side, the stirring rod is rotationally connected with the heat conducting oil liquid outlet through a sealing bearing, and a through hole which is communicated with the connecting part of the stirring rod and the heat conducting oil liquid outlet is further formed.

As a further description of the above technical solution:

the stirring blade is of a plate-shaped structure, the stirring blade is made of metal materials, and grid through holes are uniformly distributed on the surface of the stirring blade.

As a further description of the above technical solution:

the stirring blade is of a hollow structure and is communicated with the inside of the stirring rod.

As a further description of the above technical solution:

the stirring rod surface is fixedly connected with a plurality of baffles, the baffles and the stirring blades are arranged in a mutually perpendicular staggered state, and the surfaces of the baffles are uniformly provided with honeycomb holes which are convenient for material blanking.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

according to the utility model, through the arranged heat conducting oil liquid inlet and the heat conducting oil liquid outlet, heat conducting oil can enter the stirring rod through the heat conducting oil liquid inlet and is finally guided out through the plurality of stirring blades, so that the heat conducting oil is fully contacted with the material, the heating is more sufficient, and the heating and stirring effects of the material are improved.

Drawings

FIG. 1 illustrates a schematic view of the overall external architecture provided in accordance with the present utility model;

FIG. 2 is a schematic view showing a sectional structure of the reaction tank of FIG. 1 according to the present utility model;

fig. 3 shows a schematic top view of the cross-section structure of fig. 2 provided in accordance with the present utility model.

Legend description: 1. a reaction table; 2. a reaction barrel; 3. a stirring motor; 4. a stirring rod; 5. stirring the leaves; 6. a feed inlet; 7. a discharge port; 8. a liquid inlet of the heat conducting oil; 9. a conduction oil outlet; 10. a partition board.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a high-efficient esterification reactor of triacetin, including reaction table 1, reaction table 1 up end fixed mounting has reaction barrel 2, reaction barrel 2 upper end one side is equipped with feed inlet 6, reaction barrel 2 side lower extreme still is equipped with discharge gate 7, reaction barrel 2 internally mounted has the stirring subassembly that is used for stirring the material, stirring subassembly includes fixed mounting at the stirring motor 3 at reaction barrel 2 top and rotates the puddler 4 that sets up inside reaction barrel 2, puddler 4 and stirring motor 3 output shaft fixed connection, puddler 4 surface still circumference distributes has a plurality of stirring leaf 5, stirring leaf 5 is the platy structure, and stirring leaf 5 is specifically made for the metal material, the metal material can make stirring leaf 5 possess good heat conductivility, make things convenient for follow-up conduction oil heating operation, stirring leaf 5 surface evenly distributed still has the net through-hole, thereby stirring effect in the stirring in-process can be promoted, make the stirring more abundant even, the inside hollow structure of puddler 4 is specifically, the inside still is equipped with the heating element that is used for carrying out heating to the material with the stirring subassembly cooperation of reaction barrel 2.

The cooling part includes conduction oil inlet 8 and conduction oil liquid outlet 9, conduction oil inlet 8 and puddler 4 bottom intercommunication, conduction oil liquid outlet 9 sets up in inside top of reaction barrel 2 and one end runs through reaction barrel 2 lateral wall and extends to the outside, puddler 4 and conduction oil liquid outlet 9 rotate through sealed bearing and be connected, and the through-hole that is linked together has still been seted up to puddler 4 and conduction oil liquid outlet 9 junction, after the conduction oil gets into puddler 4 inside like this, finally derive in leading-in conduction oil liquid outlet 9 through the through-hole, the inside hollow structure of stirring leaf 5, and stirring leaf 5 is linked together with puddler 4 inside, after the conduction oil got into puddler 4 like this, can pass through stirring leaf 5 inside again for conduction oil distribution face is bigger, increase with material area of contact, thereby improve the effect of heat conduction.

The stirring rod 4 surface still fixedly connected with a plurality of baffles 10, baffle 10 can play the buffering effect to the material for the material can descend the speed change after the baffle 10 buffering, thereby can prolong the heating time of material, improves heating efficiency, and baffle 10 is mutually perpendicular crisscross state setting with stirring leaf 5, and the even honeycomb hole of making things convenient for the material unloading of having seted up in baffle 10 surface.

Working principle: during the use, at first add the material in to reaction bucket 2 through feed inlet 6, through driving agitator motor 3, agitator motor 3 drives puddler 4 and rotates, and then puddler 4 drives the stirring leaf and handle the material stirring to inject hot oil in the conduction oil inlet 8, hot oil gets into puddler 4 in, and pass through stirring leaf 5 step by step, finally derive in leading-in conduction oil liquid outlet 9 through the through-hole, the conduction oil can heat the material at the in-process of circulation, improve the treatment effeciency of material, and make the material heating more abundant.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (3)

1. The utility model provides a high-efficient esterification reactor of triacetin, includes reaction table (1), reaction table (1) up end fixed mounting has reaction barrel (2), reaction barrel (2) upper end one side is equipped with feed inlet (6), reaction barrel (2) side lower extreme still is equipped with discharge gate (7), reaction barrel (2) internally mounted has the stirring subassembly that is used for stirring the material, stirring subassembly includes fixed mounting agitator motor (3) at reaction barrel (2) top and rotates puddler (4) that set up inside reaction barrel (2), puddler (4) and agitator motor (3) output shaft fixed connection, puddler (4) surface still circumference distributes has a plurality of stirring leaves (5), its characterized in that: the stirring rod (4) is of a hollow structure, and a heating component matched with the stirring assembly for heating materials is also arranged in the reaction barrel (2);

inside hollow structure that is of stirring leaf (5), just stirring leaf (5) are linked together with stirring rod (4) inside, stirring rod (4) surface still fixedly connected with a plurality of baffles (10), baffle (10) are mutually perpendicular crisscross state setting with stirring leaf (5), just the honeycomb hole of making things convenient for the material unloading has evenly been seted up on baffle (10) surface.

2. The efficient glycerol triacetate esterification reactor as claimed in claim 1, wherein: the heating component comprises a heat conducting oil liquid inlet (8) and a heat conducting oil liquid outlet (9), wherein the heat conducting oil liquid inlet (8) is communicated with the bottom of the stirring rod (4), the heat conducting oil liquid outlet (9) is arranged above the inside of the reaction barrel (2) and one end of the heat conducting oil liquid outlet penetrates through the side wall of the reaction barrel (2) to extend to the outside, the stirring rod (4) is rotationally connected with the heat conducting oil liquid outlet (9) through a sealing bearing, and a through hole which is communicated with the connecting part of the stirring rod (4) and the heat conducting oil liquid outlet (9) is further formed.

3. The efficient glycerol triacetate esterification reactor as claimed in claim 1, wherein: the stirring blade (5) is of a plate-shaped structure, the stirring blade (5) is made of metal materials, and grid through holes are uniformly distributed on the surface of the stirring blade (5).