Equipment for producing o-chlorophenylacetic acid through carboxylation of o-chlorobenzyl chloride

Abstract

The utility model discloses equipment for producing o-chlorophenylacetic acid through carboxylation of o-chlorobenzyl chloride, and relates to the technical field of preparation of o-chlorophenylacetic acid. The device comprises a bottom box, a connecting ring plate is arranged over the bottom box, a heating opening is formed in the middle of the upper end face of the bottom box, a processing cylinder with the lower end located at the heating opening is arranged in the connecting ring plate, a containing ring is arranged between the connecting ring plate and the bottom box, and a plurality of notches annularly and evenly distributed along the circumferential side are formed in the circumferential side wall of the containing ring. Test tubes are arranged in the notches, and positioning rings are arranged at the upper ends of the test tubes above the placing rings in a sleeving manner. The plurality of test tubes are arranged on the peripheral side of the processing cylinder and used for containing different solvents, so that the different solvents can be conveniently put for reaction activities, and meanwhile, the upper end parts of the test tubes are limited by the positioning rings, so that the test tubes are stably placed.

Description

Technical Field

[0001] This invention belongs to the field of o-chlorophenylacetic acid preparation technology, and in particular relates to an apparatus for producing o-chlorophenylacetic acid by carboxylation of o-chlorobenzyl chloride. Background Technology

[0002] o-Chlorophenylacetic acid is an organic compound and an important fine chemical intermediate, widely used in pharmaceuticals, pesticides, fragrances, dyes, and other fields. The production of o-chlorophenylacetic acid via carboxylation of o-chlorobenzyl chloride requires specific reaction equipment. Furthermore, to ensure the reaction of o-chlorobenzyl chloride, different solutions must be used in sequence.

[0003] However, existing equipment lacks multiple test tubes for holding different solutions. Therefore, in the preparation of o-chlorophenylacetic acid, multiple test tubes must be used temporarily, which can easily affect preparation efficiency. Furthermore, the lack of a system for positioning the test tubes means that when the solution is placed inside, the tubes are prone to tipping over, leading to solution loss. To address these issues, we provide an apparatus for the carboxylation of o-chlorobenzyl chloride to produce o-chlorophenylacetic acid. Utility Model Content

[0004] The purpose of this invention is to provide an apparatus for producing o-chlorophenylacetic acid by carboxylation of o-chlorobenzyl chloride. Multiple test tubes are arranged around the periphery of the processing cylinder to hold different solvents, which facilitates the addition of different solvents for reaction activities. At the same time, the positioning ring limits the upper end of the test tubes to ensure the stability of the test tubes.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an apparatus for producing o-chlorophenylacetic acid by carboxylation of o-chlorobenzyl chloride, comprising a bottom box; a connecting ring plate is provided on the top of the bottom box; a heating port is provided in the middle of the upper end face of the bottom box; a processing cylinder with its lower end located at the heating port is provided inside the connecting ring plate; a placement ring is provided between the connecting ring plate and the bottom box; multiple recesses are provided on the peripheral sidewall of the placement ring in a ring-shaped arrangement along the periphery; test tubes are provided inside the recesses; and positioning rings are fitted on the upper ends of the test tubes located above the placement ring.

[0007] The present invention is further configured such that a spring is fixed to the upper end face of each positioning ring, and a mounting plate fixed to the lower end face of each spring is fixed to the upper end face of each spring.

[0008] The present invention is further configured such that the lower end face of the placement ring is fixed with a vertical rod that is fixedly connected to the upper end face of the base box at the position of the two adjacent recesses, and the upper end face of the base box is provided with a positioning hole at the position corresponding to the test tube.

[0009] The present invention is further configured such that a ball tube is fixed at the upper port of the processing cylinder, an annular ball block is rotatably arranged inside the ball tube, the shaft end of the annular ball block is rotatably connected to the surface of the ball tube through a bearing, and a rotating plate is fixed through the shaft end face of the annular ball block on the surface of the ball tube.

[0010] The present invention is further configured such that a vent pipe is fixed on the side wall of the processing cylinder located below the ball tube, and the side wall of the processing cylinder is connected to the inside of the vent pipe through a vent hole.

[0011] The present invention is further configured such that a sealing plate is slidably disposed inside the vent pipe, and multiple air ports are evenly distributed in a ring along the periphery of the sealing plate.

[0012] The present invention is further configured such that an insertion post is fixed on the end face of the sealing plate and inserted into the vent hole, and a second spring is fixed on the other end face of the sealing plate opposite to the insertion post, and one end of the second spring abuts against the inner end face of the vent pipe.

[0013] This utility model has the following beneficial effects:

[0014] 1. Different solvents are poured into different test tubes. Therefore, in the production of o-chlorophenylacetic acid, the solvents in different test tubes need to be poured into the processing cylinder in a certain order. By mixing in different orders, the two solvents can be guaranteed to react with each other.

[0015] 2. When placing the test tube, move the positioning ring upwards and beyond the upper end of the test tube. After placing the upper end of the test tube in the notch, loosen the positioning ring so that it fits directly onto the test tube. This positioning rod limits the position of the test tube and ensures its stability.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of an apparatus for producing o-chlorophenylacetic acid by carboxylation of o-chlorobenzyl chloride.

[0019] Figure 2 This is a structural diagram of the bottom box of this utility model.

[0020] Figure 3 This is a diagram showing the internal structure of the processing cylinder in this utility model.

[0021] Figure 4 This is a structural diagram of the sealing plate in this utility model.

[0022] Figure 5 This is a structural diagram of the positioning ring in this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Base box, 101-Heating port, 102-Positioning port, 103-Placing ring, 104-Upright rod, 105-Notch, 2-Processing cylinder, 201-Annular ball block, 202-Vent pipe, 203-Ball tube, 204-Rotating plate, 205-Vent hole, 3-Ring plate, 4-Test tube, 5-Positioning ring, 501-Spring one, 502-Mounting plate, 6-Sealing plate, 601-Plug-in post, 602-Air port, 603-Spring two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figures 1 to 5 This utility model is an apparatus for producing o-chlorophenylacetic acid by carboxylation of o-chlorobenzyl chloride. Multiple test tubes 4 are arranged around the periphery of the processing cylinder 2 to hold different solvents, so as to facilitate the addition of different solvents for reaction activities. At the same time, the positioning ring 5 limits the upper end of the test tube 4 to ensure the stable placement of the test tube 4.

[0028] Specifically, the bottom box 1 has a connecting ring plate 3 directly above it. A heating port 101 is opened in the middle of the upper surface of the bottom box 1. A processing cylinder 2 with its lower end at the heating port 101 is arranged inside the connecting ring plate 3. A placement ring 103 is arranged between the connecting ring plate 3 and the bottom box 1. Multiple recesses 105 are evenly distributed in a ring along the periphery of the placement ring 103. Test tubes 4 are arranged inside the recesses 105. Positioning rings 5 ​​are fitted on the upper ends of the test tubes 4 located above the placement ring 103.

[0029] The operation process of this embodiment is as follows: By pouring various different solvents into different test tubes 4, the solvents in different test tubes 4 need to be poured into the processing cylinder 2 in sequence during the production of o-chlorophenylacetic acid. By using different order ratios, the two solvents can be ensured to react with each other. At the same time, the positioning ring 5 is placed on the test tube 4 to limit the test tube 4 to the position of the notch 105, thereby positioning the test tube 4 and ensuring its stability. When it is necessary to pour out the reacted substance inside the processing cylinder 2, the processing cylinder 2 can be removed by moving it upward on the inner side of the connecting ring plate 3.

[0030] It should be noted that a heater is fixed inside the bottom box 1 to heat the bottom of the processing cylinder 2 located at the heating port 101, thereby ensuring the stable reaction of the molten liquid inside the processing cylinder 2.

[0031] Example 2

[0032] Please see Figure 2 , Figure 3 and Figure 5 Based on Example 1, the rotating plate 204 drives the annular ball block 201 to rotate, thereby facilitating the opening and closing of the port position of the processing cylinder 2.

[0033] Specifically, spring 501 is fixed to the upper end face of positioning ring 5, and mounting plate 502 fixed to the lower end face of connecting ring plate 3 is fixed to the upper end face of spring 501. Vertical rod 104 fixed to the upper end face of bottom box 1 is fixed to the lower end face of placement ring 103 at the positions of two adjacent recesses 105. Positioning port 102 is opened at the position of test tube 4 on the upper end face of bottom box 1. Ball tube 203 is fixed to the upper end of processing cylinder 2. Annular ball block 201 is rotatably arranged inside ball tube 203. The shaft end of annular ball block 201 is rotatably connected to the surface of ball tube 203 through bearing. Rotating plate 204 is fixed to the shaft end face of annular ball block 201 through the surface of ball tube 203.

[0034] The operation process of this embodiment is as follows: When the test tube 4 is taken out from the inside of the notch 105, the positioning ring 5 can be moved upward to compress the spring 501, so that the positioning ring 5 is dislodged from the upper end of the test tube 4. At this time, the test tube 4 can be taken out from the inside of the notch 105. At the same time, the rotating plate 204 is controlled to rotate, so that the rotating plate 204 drives the annular ball block 201 to rotate and move inside the ball tube 203, so that the upper port of the processing cylinder 2 can be opened. At this time, the solution in the test tube 4 can be poured into the processing cylinder 2.

[0035] Example 3

[0036] Please see Figure 3 and Figure 4 Based on Example 1, the sealing plate 6 and spring 603 are used in combination to facilitate self-resetting and sealing of the vent pipe 202.

[0037] Specifically, a vent pipe 202 is fixed to the outer side wall of the processing cylinder 2 located below the ball tube 203. The outer side wall of the processing cylinder 2 is connected to the inside of the vent pipe 202 through a vent hole 205. A sealing plate 6 is slidably arranged inside the vent pipe 202. Multiple air ports 602 are evenly distributed in a ring around the periphery of the sealing plate 6. An insertion post 601 is fixed to the end face of the sealing plate 6 and inserted into the vent hole 205. A spring 603 is fixed to the other end face of the sealing plate 6 opposite to the insertion post 601, and one end of the spring 603 abuts against the inner end face of the vent pipe 202.

[0038] The operation process of this embodiment is as follows: Under the heating reaction, the high temperature gas generated inside the processing cylinder 2 will push the plug 601 to be exposed in the vent hole 205, so that the high temperature gas will flow out from the air port 602 on the periphery of the sealing plate 6. When the processing cylinder 2 stops working, the second spring 603 will push the sealing plate 6 to reset and move, and make the plug 601 re-insert into the vent hole 205.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A plant for the production of o-chlorobenzoic acid by o-chlorobenzaldehyde carboxylation, comprising a bottom tank (1); characterized by the fact that: The bottom box (1) is provided with a connecting ring plate (3) above it, the middle of the upper end surface of the bottom box (1) is provided with a heating port (101), the inside of the connecting ring plate (3) is provided with a processing cylinder (2) with its lower end at the position of the heating port (101), a placing ring (103) is arranged between the connecting ring plate (3) and the bottom box (1), the circumferential wall of the placing ring (103) is provided with a plurality of notches (105) arranged in a ring shape along the circumferential side, and a test tube (4) is arranged in each notch (105), and a positioning ring (5) is arranged on the upper end of each test tube (4).

2. A plant for the production of o-chlorobenzoic acid by o-chlorobenzyl carboxylation according to claim 1, characterized in that The upper end surface of the positioning ring (5) is fixed with a spring (501), and the upper end surface of the spring (501) is fixed with a mounting plate (502) fixed with the lower end surface of the connecting ring plate (3).

3. The apparatus for producing o-chlorobenzoic acid by o-chlorobenzyl carboxylation according to claim 1, characterized in that, The lower end surface of the placing ring (103) is fixed with a vertical rod (104) fixedly connected with the upper end surface of the bottom box (1) at the position of two adjacent notches (105), and the upper end surface of the bottom box (1) is provided with a positioning port (102) corresponding to the position of the test tube (4).

4. The apparatus for producing o-chlorobenzoic acid by o-chlorobenzyl carboxylation according to claim 1, characterized by, The upper end of the processing cylinder (2) is fixed with a bulb (203), the inside of the bulb (203) is rotatably provided with an annular ball (201), the shaft end of the annular ball (201) is rotatably connected with the surface side of the bulb (203) through a bearing, and a rotating plate (204) is fixed on the shaft end surface of the annular ball (201) penetrating through the surface side of the bulb (203).

5. A plant for the production of o-chlorobenzoic acid by o-chlorobenzyl carboxylation according to claim 4, characterized in that The surface wall of the processing cylinder (2) below the bulb (203) is fixed with a gas discharge pipe (202), and the surface wall of the processing cylinder (2) is connected with the inside of the gas discharge pipe (202) through a gas discharge hole (205).

6. A plant for the production of o-chlorobenzoic acid by o-chlorobenzyl carboxylation according to claim 5, characterized in that The inside of the gas discharge pipe (202) is slidably provided with a sealing plate (6), and the circumferential wall of the sealing plate (6) is provided with a plurality of gas ports (602) arranged in a ring shape along the circumferential side.

7. A plant for the production of o-chlorophenylacetic acid by o-chlorobenzene carboxylation according to claim 6, characterized in that, The end surface of the sealing plate (6) is fixed with a plug-in column (601) plugged into the inside of the gas discharge hole (205), the other end surface of the sealing plate (6) opposite to the plug-in column (601) is fixed with a spring (603), and one end of the spring (603) abuts against the inner end surface of the gas discharge pipe (202).

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