An ethyl lactate catalytic esterification reaction device

Abstract

The utility model discloses a kind of ethyl lactate catalytic esterification reaction equipment, belong to ethyl lactate field.A kind of ethyl lactate catalytic esterification reaction equipment, including reaction box, further include: at least three reaction boxes, fixedly installed in the reaction box, three the reaction box is communicated by pipeline each other, the reaction box is fixedly connected with several baffle in, make the reaction box inner chamber form a serpentine water channel;The utility model is set up by three reaction boxes, can effectively delay ethyl lactate raw material flow, make it and the catalytic piece on the flow guide seat fully contact, improve ethyl lactate catalytic esterification quality, and, under the condition that ethyl lactate raw material is continuously injected, reaction box inside can form a stable reaction area, to realize continuous processing, effectively improve the efficiency of ethyl lactate catalytic esterification.

Description

Technical Field

[0001] This utility model relates to the field of ethyl lactate technology, and in particular to an apparatus for catalytic esterification of ethyl lactate. Background Technology

[0002] Ethyl lactate is a flammable chemical substance that can ignite and explode when exposed to open flames or high heat. It is miscible with water and can also be miscible with alcohols, aromatics, esters, hydrocarbons, and oils. It can be used as a solvent for cellulose esters, resins, coatings, etc., and is also used as a fragrance. Ethyl lactate is obtained by esterification of lactic acid and ethanol in sulfuric acid. The catalytic esterification of ethyl lactate requires the use of ethyl lactate catalytic esterification reaction equipment.

[0003] For example, the patent publication number CN219252589U discloses a catalytic esterification reaction device for ethyl lactate, comprising a reaction chamber. A rotating column is rotatably connected to the inner wall of the bottom of the reaction chamber via bearings, and a reaction vessel is fixed to the top of the rotating column by bolts. A first gear is welded to the outer wall of the rotating column. A drive motor is fixed to the inner wall of the bottom of the reaction chamber by bolts, and a second gear is fixed to the output end of the drive motor by bolts. The second gear meshes with the first gear. An annular groove is formed on the inner wall of the top of the reaction chamber. This utility model's drive motor can drive the first gear to rotate and mesh with the second gear, enabling the second gear to drive the rotating column, reaction vessel, and stirring rod to rotate forward. The stirring motor can drive the stirring shaft to rotate in the opposite direction, allowing the stirring shaft and stirring rod to rotate in opposite directions, resulting in better and faster mixing of the ethyl lactate raw material and catalyst.

[0004] However, the above case uses stirring to mix ethyl lactate raw material and catalyst, which requires batch feeding, reaction and discharge, making continuous processing difficult. Therefore, it will reduce the efficiency of ethyl lactate catalytic esterification reaction. Secondly, when the stirring rod mixes ethyl lactate raw material and catalyst, it will easily accelerate the wear of catalyst, thereby reducing its service life. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the existing technology of using stirring to catalyze the esterification reaction of ethyl lactate, which is difficult to process continuously and the catalyst is easily worn during stirring, thus reducing its service life. Therefore, this invention proposes a device for catalyzing the esterification reaction of ethyl lactate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An apparatus for catalytic esterification of ethyl lactate includes a reaction chamber and further includes: at least three reaction boxes fixedly installed inside the reaction chamber, the three reaction boxes being interconnected by pipes, wherein several partitions are fixedly connected inside each reaction box to form a serpentine flow channel within the reaction box cavity; and a flow guide seat fixedly connected inside the reaction box, the flow guide seat being located between the several partitions, wherein the flow guide seat is serpentine and stepped, and several catalyst elements are provided on the flow guide seat.

[0007] For catalytic esterification of ethyl lactate feedstock, preferably, the catalyst includes a catalyst box fixedly connected to a flow guide seat, and two filter screens are fixedly installed on the catalyst box.

[0008] To guide the ethyl lactate raw material in the flow channel, the guide seat is further provided with a guide plate that is fixedly connected to the catalyst box, and the guide plate is triangular in shape.

[0009] To ensure that the ethyl lactate feedstock is in full contact with the catalyst, the two filter screens are further configured to be of different sizes.

[0010] In order to slow down the flow of ethyl lactate feedstock and improve its catalytic esterification quality, preferably, the number of the flow guide seats is three, and the flow guide directions of the three flow guide seats are staggered.

[0011] In order to control the temperature inside the reaction chamber and improve the reaction efficiency, preferably, at least two electric heating plates are fixedly installed inside the reaction chamber, and the two electric heating plates are located between the three reaction boxes.

[0012] In order to guide the ethyl lactate raw material step by step, preferably, the three reaction boxes are vertically installed inside the reaction chamber.

[0013] Compared with the prior art, this utility model provides a device for the catalytic esterification reaction of ethyl lactate, which has the following beneficial effects: 1. The ethyl lactate catalytic esterification reaction equipment uses staggered flow guide seats to allow the ethyl lactate raw material to flow down in a step-like manner, which increases its fluidity and improves its catalytic esterification efficiency. 2. This ethyl lactate catalytic esterification reaction equipment, through three vertically arranged reaction boxes, can guide the ethyl lactate raw material, allowing it to contact and react with multiple catalysts during the flow process, thereby improving the efficiency and quality of ethyl lactate catalytic esterification.

[0014] The parts of this device not described herein are the same as or can be implemented using existing technologies. This invention, through the arrangement of three reaction boxes, can effectively slow down the flow of ethyl lactate raw material, allowing it to fully contact the catalyst on the guide seat, thereby improving the quality of ethyl lactate catalytic esterification. Furthermore, with the continuous injection of ethyl lactate raw material, a stable reaction zone can be formed inside the reaction box, thus achieving continuous processing and effectively improving the efficiency of ethyl lactate catalytic esterification. Attached Figure Description

[0015] Figure 1 This is an isometric schematic diagram of an ethyl lactate catalytic esterification reaction apparatus proposed in this utility model; Figure 2 This is a cross-sectional schematic diagram of the reaction chamber of the catalytic esterification reaction equipment for ethyl lactate proposed in this utility model; Figure 3 This is a cross-sectional schematic diagram of the reaction chamber of the catalytic esterification reaction apparatus for ethyl lactate proposed in this utility model; Figure 4 This is a partial structural isometric schematic diagram of an ethyl lactate catalytic esterification reaction apparatus proposed in this utility model; Figure 5 This is an isometric schematic diagram of the flow guide seat of the ethyl lactate catalytic esterification reaction device proposed in this utility model; Figure 6 This is a schematic diagram showing the disassembled catalyst element of an ethyl lactate catalytic esterification reaction apparatus proposed in this utility model.

[0016] In the diagram: 1. Reaction chamber; 2. Reaction box; 3. Baffle; 4. Flow guide seat; 5. Catalyst box; 51. Filter screen; 52. Guide plate; 6. Electric heating plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0019] Reference Figures 1-6An apparatus for the catalytic esterification of ethyl lactate includes a reaction chamber 1 and at least three reaction boxes 2. The number of reaction boxes 2 can be one to three, preferably three. The arrangement of three reaction boxes 2 extends the reaction time between the ethyl lactate raw material and the catalyst, thereby improving the quality of catalytic esterification. The reaction boxes 2 are fixedly installed inside the reaction chamber 1 and are interconnected by pipes. At least two electric heating plates 6 are fixedly installed inside the reaction chamber 1, located between the three reaction boxes 2, for heating the interior of the reaction chamber 1. After the interior of the reaction chamber 1 is heated to a specified temperature... To facilitate the full reaction of ethyl lactate raw material with the catalyst and thus improve its catalytic esterification efficiency, several partitions 3 are fixedly connected inside the reaction box 2, forming a serpentine flow channel inside the reaction box 2. The serpentine flow channel can slow down the flow of ethyl lactate, allowing it to fully contact and react with multiple catalysts during the flow process, which helps to improve its catalytic esterification quality. A flow guide seat 4 is fixedly connected inside the reaction box 2, located between several partitions 3. The flow guide seat 4 is serpentine and stepped, used to guide the flow of ethyl lactate in the flow channel. Several catalyst elements are provided on the flow guide seat 4.

[0020] Specifically, by setting up three reaction boxes 2, the flow of ethyl lactate feedstock can be effectively slowed down, allowing it to fully contact the catalyst on the guide seat 4, thereby improving the quality of ethyl lactate catalytic esterification. Furthermore, with the continuous injection of ethyl lactate feedstock, a stable reaction zone can be formed inside the reaction box 1, thus achieving continuous processing and effectively improving the efficiency of ethyl lactate catalytic esterification.

[0021] The catalyst includes a catalyst box 5 fixedly connected to the flow guide seat 4. Two filters 51 are fixedly installed on the catalyst box 5. The two filters 51 are of different sizes. One filter 51 is smaller and located at the inlet of the catalyst box 5, while the other filter 51 is larger and located at the outlet of the catalyst box 5. The small inlet and large outlet method can make the ethyl lactate raw material and the catalyst fully mixed and accelerate the reaction efficiency. The flow guide seat 4 is provided with a guide plate 52 fixedly connected to the catalyst box 5. The guide plate 52 is triangular and is used to guide the ethyl lactate in the water flow channel.

[0022] Specifically, through the arrangement of the catalyst, the ethyl lactate feedstock in the serpentine flow channel will gradually come into full contact with the catalyst inside multiple catalyst boxes 5 during the flow process, thereby accelerating its catalytic esterification efficiency.

[0023] There are three flow guide seats 4, and the flow guiding directions of the three flow guide seats 4 are staggered.

[0024] Specifically, by using the staggered flow guide seats 4, the ethyl lactate feedstock can flow down in a step-like manner, which increases its fluidity and improves its catalytic esterification efficiency.

[0025] The three reaction boxes 2 are vertically installed inside the reaction chamber 1.

[0026] Specifically, by using three vertically arranged reaction boxes 2, the ethyl lactate feedstock can be guided to react with multiple catalysts during the flow process, thereby improving the efficiency and quality of catalytic esterification of ethyl lactate.

[0027] Working principle: After ethyl lactate feedstock enters reaction box 2 through the pipeline, it flows along the serpentine water channel inside reaction box 2. The water channel is equipped with stepped guide seats 4, which can accelerate the flow of ethyl lactate feedstock. When ethyl lactate feedstock comes into full contact with the catalyst inside catalyst box 5, it can quickly react. Furthermore, during the continuous flow, ethyl lactate feedstock will come into full contact with multiple catalysts inside catalyst box 5, thereby improving its catalytic esterification quality.

[0028] During the catalytic esterification reaction of ethyl lactate, the staff uses an external control switch to activate the electric heating plate 6, which heats the inside of the reaction chamber 1, thereby improving the reaction efficiency between the ethyl lactate raw material and the catalyst.

[0029] Furthermore, as the external ethyl lactate feedstock continuously flows into the reaction chamber 1, a stable reaction zone can be formed inside the reaction chamber 1, thereby achieving continuous processing and effectively improving the efficiency and quality of ethyl lactate catalytic esterification.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An apparatus for catalytic esterification of ethyl lactate, comprising a reaction chamber (1), characterized in that, Also includes: At least three reaction boxes (2) are fixedly installed inside the reaction chamber (1), and the three reaction boxes (2) are interconnected by pipes. Among them, several partitions (3) are fixedly connected inside the reaction box (2), so that the inner cavity of the reaction box (2) forms a serpentine water flow channel; A flow guide seat (4) is fixedly connected inside the reaction box (2), and the flow guide seat (4) is located between several partitions (3). The guide seat (4) is serpentine and stepped, and a number of catalysts are provided on the guide seat (4).

2. The apparatus for catalytic esterification of ethyl lactate according to claim 1, characterized in that, The catalyst includes a catalyst box (5) fixedly connected to the flow guide seat (4), and two filters (51) are fixedly installed on the catalyst box (5).

3. The apparatus for catalytic esterification of ethyl lactate according to claim 2, characterized in that, The flow guide seat (4) is provided with a guide plate (52) that is fixedly connected to the catalyst box (5), and the guide plate (52) is triangular.

4. The apparatus for catalytic esterification of ethyl lactate according to claim 2, characterized in that, The two filters (51) are of different sizes.

5. The apparatus for catalytic esterification of ethyl lactate according to claim 1, characterized in that, The number of the flow guide seats (4) is three, and the flow guiding directions of the three flow guide seats (4) are staggered.

6. The apparatus for catalytic esterification of ethyl lactate according to claim 1, characterized in that, At least two electric heating plates (6) are fixedly installed inside the reaction chamber (1), and the two electric heating plates (6) are located between the three reaction boxes (2).

7. The apparatus for catalytic esterification of ethyl lactate according to claim 1, characterized in that, The three reaction boxes (2) are vertically installed inside the reaction chamber (1).

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