A raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde

Abstract

This utility model discloses a raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde, relating to the field of organic chemical production technology. The utility model includes a conveying tank, a top cover, a fixing ring, and a cleaning tank. A top cover is fixed to the top of the conveying tank, and a fixing ring is fixed to the center of the top of the top cover. Dispersion tubes are fixed in a circular array at the bottom of the fixing ring, passing through and fixed inside the top cover. Each dispersion tube has a dispersion chamber fixedly connected to its bottom end. A conveying pipe is fixedly connected to the upper periphery of the conveying tank, and the conveying pipe is L-shaped. A cleaning tank is fixed to the periphery of the conveying pipe. This utility model, by setting up a conveying tank, a top cover, a fixing ring, and a cleaning tank, solves the problem that the alkaline washing of the 3,5-dibromo-o-aminobenzaldehyde raw material is often insufficient, and that neutralization after alkaline washing affects the purity of the o-aminobenzaldehyde production.

Description

Technical Field

[0001] This utility model belongs to the field of organic chemical production technology, and in particular relates to a raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde. Background Technology

[0002] The production of 3,5-dibromo-2-aminobenzaldehyde typically uses 2-aminobenzaldehyde as the starting material, proceeding through bromination and subsequent purification steps. 2-Aminobenzaldehyde is a chemically unstable compound containing both amino and aldehyde groups, making it prone to oxidation, polymerization, or disproportionation. Therefore, its purification process requires strict control of conditions, avoiding strong alkalis, high temperatures, and light exposure. Traditional purification methods include vacuum distillation, column chromatography, recrystallization, and sublimation. However, these methods usually require inert gas (such as nitrogen or argon) protection and light-protected operation to prevent decomposition. During storage and transportation, in the event of leakage, the aldehyde group is easily oxidized to a carboxyl group, exhibiting acidity and requiring purification before use in the production of 3,5-dibromo-2-aminobenzaldehyde. However, its practical application still has the following drawbacks:

[0003] In the production process of 3,5-dibromo-o-aminobenzaldehyde, direct use of column chromatography, recrystallization and sublimation can easily cause decomposition. In order to quickly remove acidic impurities from o-aminobenzaldehyde, rapid alkaline washing with a weak base can effectively remove the impurities. However, the adequacy of alkaline washing is not high in the process of removing impurities.

[0004] Secondly, after alkali washing and purification of o-aminobenzaldehyde, alkali ions will be introduced into its organic phase, which needs to be neutralized. However, after neutralization, new impurities will remain in the organic phase, affecting the production purity of o-aminobenzaldehyde. Utility Model Content

[0005] The purpose of this invention is to provide a raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde. By setting up a conveying tank, a top cover, a fixing ring, and a washing tank, it solves the problem that the alkaline washing of the raw material o-aminobenzaldehyde is often insufficient, and that neutralization after alkaline washing will affect the purity of o-aminobenzaldehyde production.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde, comprising a conveying tank, a top cover, a fixing ring, and a cleaning tank. The top cover is fixed to the top of the conveying tank, and a fixing ring is fixed to the center of the top of the top cover. Dispersion tubes are fixed in a circular array at the bottom of the fixing ring, and these dispersion tubes are fixedly connected to the top cover. Each dispersion tube has a dispersion chamber at its bottom. A conveying pipe is fixedly connected to the upper periphery of the conveying tank, and the conveying pipe is L-shaped. A cleaning tank is fixed to the periphery of the conveying pipe. During operation, the conveying tank contains water for alkaline washing of the o-aminobenzaldehyde organic phase. The top of the conveying tank is sealed by the top cover. The fixing ring disperses and conveys the o-aminobenzaldehyde organic phase to be purified. Deionized water is conveyed through the cleaning tank to wash away the ions carried by the alkaline washing.

[0008] Furthermore, both the conveying tank and the cleaning tank are fixedly connected to the center of their bottom ends by a drain pipe, and an electric control valve is fixed to the center of the periphery of the drain pipe. The drain pipe is transparent, and the drain pipe on the conveying tank discharges water, and the electric control valve controls the flow of water through the drain pipe.

[0009] Furthermore, a water supply pipe is vertically fixed in the center of the top cover, and an electric control valve is fixed around the water supply pipe above the top cover. The water supply pipe on the top cover delivers sodium bicarbonate solution to the delivery tank, and the electric control valve controls the on / off of the water supply.

[0010] Furthermore, a feed pipe is fixedly connected to the top of the fixed ring, and a filter is fixed to the lower part of the inner wall of the dispersion chamber. The feed pipe transports the o-aminobenzaldehyde organic phase into the fixed ring and into the dispersion pipe, and the filter disperses the material in the dispersion chamber.

[0011] Furthermore, a sealing cap is fixed to the top of the cleaning tank, and a water supply pipe is vertically fixed inside the sealing cap. An electric control valve is also fixed around the water supply pipe above the sealing cap, and the cleaning tank is sealed by the sealing cap at its top.

[0012] Furthermore, both the conveying tank and the cleaning tank have support legs fixed in a circular array on the outside of the drain pipes at the bottom. The upper part of the cleaning tank, away from the conveying tank, is fixedly connected to a discharge pipe. Both the conveying tank and the cleaning tank are supported on the ground by the support legs.

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

[0014] This invention solves the problem of insufficient alkaline washing of 3,5-dibromo-o-aminobenzaldehyde raw material by setting up a conveying tank, a top cover, a fixing ring, and a washing tank. The organic phase of o-aminobenzaldehyde is conveyed in the conveying pipe to the fixing ring, dispersed in the fixing ring to the dispersion pipe, and then conveyed to the dispersion chamber. After being filtered by the filter at the bottom of the dispersion chamber, it is dispersed to the lower part of the conveying tank and enters the washing sodium bicarbonate solution to wash away the benzoic acid formed by the oxidation of the o-aminobenzaldehyde organic phase. The o-aminobenzaldehyde organic phase rises to the upper part of the conveying tank and is conveyed to the washing tank through the conveying pipe on the conveying tank, making the alkaline washing of o-aminobenzaldehyde more thorough.

[0015] This invention solves the problem that neutralization after alkaline washing affects the purity of o-aminobenzaldehyde production by setting up a conveying tank, a top cover, a fixing ring, and a cleaning tank. The conveying pipe transports the o-aminobenzaldehyde organic phase, after benzoic acid impurities have been washed away, to the lower part of the conveying tank. The o-aminobenzaldehyde organic phase floats to the top, while the bicarbonate and sodium ions contained in the sodium bicarbonate in the o-aminobenzaldehyde organic phase are washed away by deionized water and float to the top, and are discharged through the discharge pipe. After alkaline washing, the alkaline ions of o-aminobenzaldehyde can be easily removed, preventing any impact on the purity of benzaldehyde. Attached Figure Description

[0016] 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.

[0017] Figure 1 A three-dimensional view of the assembly structure of a raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde.

[0018] Figure 2 This is a three-dimensional structural view of the conveying tank;

[0019] Figure 3 This is a three-dimensional structural diagram of the top cover;

[0020] Figure 4 This is a three-dimensional structural diagram of the fixing ring;

[0021] Figure 5 This is a three-dimensional structural diagram of the cleaning tank.

[0022] Figure label:

[0023] 1. Conveying tank; 101. Conveying pipe; 102. Drain pipe; 103. Electrically controlled valve one; 104. Support leg; 2. Top cover; 201. Water supply pipe; 202. Electrically controlled valve two; 3. Fixing ring; 301. Material conveying pipe; 302. Dispersion pipe; 303. Dispersion chamber; 304. Filter plate; 4. Cleaning tank; 401. Discharge pipe; 402. Sealing cover. Detailed Implementation

[0024] 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. Specific Implementation Example 1

[0025] Please see Figure 1-4 This invention relates to a raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde, comprising a conveying tank 1, a top cover 2, a fixing ring 3, and a cleaning tank 4. The top cover 2 is fixed to the top of the conveying tank 1. The conveying tank 1 conveys the o-aminobenzaldehyde organic phase (o-aminobenzaldehyde dissolved in a stable organic solution) within it. The top cover 2 seals the top of the conveying tank 1. A fixing ring 3 is fixed to the center of the top of the top cover 2, dispersing and conveying the o-aminobenzaldehyde organic phase material into the conveying tank 1. A dispersion tube 302 is fixed in a circular array at the bottom of the fixing ring 3, dispersing the material from the fixing ring. The o-aminobenzaldehyde organic phase conveyed in 3 is dispersed through a dispersion tube 302 fixed inside the top cover 2. The bottom end of each dispersion tube 302 is fixedly connected to a dispersion chamber 303. The o-aminobenzaldehyde organic phase dispersed by the dispersion tube 302 is conveyed into the dispersion chamber 303 and dispersed therein. A conveying pipe 101 is fixedly connected to the upper part of the periphery of the conveying tank 1. The conveying pipe 101 conveys the preliminarily cleaned o-aminobenzaldehyde organic phase to the cleaning tank 4. The conveying pipe 101 is L-shaped. The cleaning tank 4 is fixed around the periphery of the conveying pipe 101. The cleaning tank 4 conveys deionized water for cleaning.

[0026] Specifically, both the bottom center of the conveying tank 1 and the cleaning tank 4 are fixedly connected to a drain pipe 102, and an electric control valve 103 is fixed to the center of the periphery of the drain pipe 102. The drain pipe 102 is transparent. The drain pipe 102 on the conveying tank 1 discharges the sodium bicarbonate solution used to wash the organic phase of o-aminobenzaldehyde. The flow of the drain pipe 102 is controlled by the electric control valve 103.

[0027] Furthermore, a water supply pipe 201 is vertically fixed in the center of the top cover 2, and an electric control valve 202 is fixed around the water supply pipe 201 above the top cover 2. The water supply pipe 201 on the top cover 2 transports the cleaning alkaline solution to the conveying tank 1, and the electric control valve 202 controls the on / off of the water supply pipe 201.

[0028] Furthermore, the top of the fixed ring 3 is fixedly connected to the conveying pipe 301, and the lower part of the inner wall of the dispersion chamber 303 is fixedly connected to the filter plate 304. The top of the conveying pipe 301 is connected to the pipeline for conveying the o-aminobenzaldehyde organic phase, and the o-aminobenzaldehyde organic phase output from the dispersion chamber 303 is filtered by the filter plate 304.

[0029] The operation process of this embodiment is as follows: During operation, the o-aminobenzaldehyde organic phase material is conveyed in the conveying pipe 301 to the fixed ring 3, dispersed in the fixed ring 3 to the dispersion pipe 302, and conveyed in the dispersion pipe 302 to the dispersion chamber 303. After being filtered by the filter 304 at the bottom of the dispersion chamber 303, it is dispersed and conveyed to the lower part of the conveying tank 1 and enters the cleaning sodium bicarbonate solution to wash away the benzoic acid formed by the oxidation of the o-aminobenzaldehyde organic phase. The o-aminobenzaldehyde organic phase rises to the upper part of the conveying tank 1 and is conveyed to the cleaning tank 4 through the conveying pipe 101 on the conveying tank 1. Specific Implementation Example 2

[0030] Please see Figure 1 , 2 5. Based on the specific embodiment one, a sealing cover 402 is fixed to the top of the cleaning tank 4. A water supply pipe 201 is vertically fixed inside the sealing cover 402. An electric control valve 202 is also fixed around the water supply pipe 201 above the sealing cover 402. The sealing cover 402 at the top of the cleaning tank 4 seals its top. The top of the water supply pipe 201 inside the sealing cover 402 is connected to the deionized water delivery pipe 101. Deionized water is delivered to the cleaning tank 4 through the water supply pipe 201 inside the sealing cover 402, and the water supply pipe 201 is controlled by the electric control valve 202 to control the flow of water.

[0031] Specifically, both the outer sides of the drain pipes 102 at the bottom of the conveying tank 1 and the cleaning tank 4 are fixed with support legs 104 in a circular array. The upper side of the cleaning tank 4, away from the conveying tank 1, is fixedly connected to the discharge pipe 401. The support legs 104 on the conveying tank 1 and the cleaning tank 4 are supported on the ground. The discharge pipe 401 outputs the cleaned material from the cleaning tank 4.

[0032] The operation process of this embodiment is as follows: During operation, the conveying pipe 101 conveys the o-aminobenzaldehyde organic phase, which has been washed to remove benzoic acid impurities, in the conveying tank 1 to the lower part of the conveying tank 1. The o-aminobenzaldehyde organic phase floats to the top. At the same time, the bicarbonate ions and sodium ions contained in the sodium bicarbonate in the o-aminobenzaldehyde organic phase are washed away by deionized water and float to the top, and are output through the discharge pipe 401. When cleaning the cleaning water or solution in the conveying tank 1 and the cleaning tank 4, the electric control valve 103 on the drain pipe 102 is opened. The liquid level of the o-aminobenzaldehyde organic phase and the water is observed during drainage. When the interface between the o-aminobenzaldehyde organic phase and the water enters the drain pipe 102, the electric control valve 103 can be closed, and the electric control valve 103 above the top cover 2 and the sealing cover 402 of the cleaning tank 4 can be opened to convey the sodium bicarbonate solution into the conveying tank 1. The deionized water is conveyed into the conveying tank 1 through the drain pipe 102 on the sealing cover 402.

[0033] 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.

[0034] 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 raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde, comprising a conveying tank (1), a top cover (2), a fixing ring (3), and a cleaning tank (4), characterized in that: The top of the conveying tank (1) is fixed with a top cover (2), and a fixing ring (3) is fixed in the center of the top of the top cover (2). The bottom of the fixing ring (3) is fixed with a dispersion tube (302) in a ring array. The dispersion tube (302) is fixed inside the top cover (2). The bottom of each dispersion tube (302) is fixedly connected to a dispersion chamber (303). The upper part of the periphery of the conveying tank (1) is fixedly connected with a conveying pipe (101). The conveying pipe (101) is arranged in an L shape. A cleaning tank (4) is fixed around the periphery of the conveying pipe (101).

2. The raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde according to claim 1, characterized in that: Both the conveying tank (1) and the cleaning tank (4) are fixedly connected to a drain pipe (102) at the center of their bottom ends. An electric control valve (103) is fixed to the center of the periphery of the drain pipe (102). The drain pipe (102) is transparent.

3. The raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde according to claim 1, characterized in that: A water supply pipe (201) is vertically fixed in the center of the top cover (2), and an electric control valve (202) is fixed around the water supply pipe (201) above the top cover (2).

4. The raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde according to claim 1, characterized in that: The top end of the fixed ring (3) is fixedly connected to the conveying pipe (301), and the lower part of the inner wall of the dispersion chamber (303) is fixed with a filter plate (304).

5. The raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde according to claim 1, characterized in that: The top of the cleaning tank (4) is fixed with a sealing cap (402), and a water supply pipe (201) is fixed vertically inside the sealing cap (402). The water supply pipe (201) above the sealing cap (402) is also fixed with an electric control valve (202) on its periphery.

6. The raw material purification and conveying device for 3,5-dibromo-o-aminobenzaldehyde according to claim 2, characterized in that: Both the bottom drain pipes (102) of the conveying tank (1) and the cleaning tank (4) are fixed with support legs (104) in a ring array on the outside. The upper side of the cleaning tank (4) away from the conveying tank (1) is fixedly connected with the discharge pipe (401).

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