Reaction kettle for preparing tetrasodium iminodisuccinate

Abstract

The utility model discloses a tetrasodium iminodisuccinate preparation reaction kettle, and relates to the technical field of reaction kettles, the tetrasodium iminodisuccinate preparation reaction kettle comprises a kettle body; the inner shell is mounted in the kettle body, a discharging opening communicated with the discharging opening of the kettle body is formed in the bottom of the inner shell, and the space between the kettle body and the inner shell is an inner cavity; the two gas guide pipes are symmetrically arranged at the axis of the inner shell, extend into the inner cavity from the top of the side wall of the kettle body, downwards extend to the bottom of the kettle body and then penetrate through the inner shell, and openings in the bottom ends of the gas guide pipes are downwards arranged; the two cooling pipes are symmetrically arranged in the axis of the inner shell, enter the inner cavity from the top of the kettle body, are attached to the outer wall of the inner shell, extend downwards, are upwards coiled to the top of the other side of the inner cavity in a snakelike manner from the bottom to the top in a half arc-shaped area of the inner shell, and penetrate out of the kettle body to form a liquid outlet; the supporting plate is fixedly arranged on the outer side of the inner shell and is propped against the inner wall of the kettle body. The reaction kettle has the effects of improving the cooling uniformity and cooling efficiency of the bottom of the reaction kettle and further improving the yield of the tetrasodium iminodisuccinate.

Description

Technical Field

[0001] The present application relates to the technical field of reactors, and in particular to a reactor for preparing tetrasodium iminodisuccinate. Background Art

[0002] During the preparation process of tetrasodium iminodisuccinate in a reactor, the temperature in the reactor needs to be controlled. A high reaction temperature will lead to a decrease in yield.

[0003] In addition to temperature control, nitrogen needs to be introduced into the reactor to isolate the air, reduce the probability of amino acid oxidation, and thus increase production. The existing reactor used to produce sodium iminodisuccinate tetrasodium has a cooling function, but the internal water channel distribution is unreasonable, resulting in uneven temperature in the reactor, and the top temperature is significantly lower than the bottom temperature, which leads to low cooling efficiency and low production. Utility Model Content

[0004] The purpose of the utility model of the present application is to improve the problem of uneven cooling of the reactor during the production of tetrasodium iminodisuccinate, which leads to reduced output. The present application provides a reactor for preparing tetrasodium iminodisuccinate.

[0005] The present application provides a tetrasodium iminodisuccinate preparation reactor using the following technical solution:

[0006] A reaction kettle for preparing tetrasodium iminodisuccinate, comprising

[0007] Kettle body;

[0008] The inner shell is installed inside the kettle body, and a discharge port connected to the discharge port of the kettle body is opened at the bottom, and the space between the kettle body and the inner shell is the inner cavity;

[0009] There are two air guide pipes, which are symmetrically arranged with respect to the axis of the inner shell, extending from the top of the side wall of the kettle body into the inner cavity and extending downward to the bottom of the kettle body and then passing through the inner shell, and the bottom end of the air guide pipe is opened downward;

[0010] There are two cooling pipes, which are symmetrically arranged with the axis of the inner shell. After entering the inner cavity from the top of the kettle body, they are attached to the outer wall of the inner shell and extend downward. Then, they are snake-shaped upward from the bottom to the top in the arc area of ​​half of the inner shell to the top of the other side of the inner cavity, and then pass through the kettle body to become the liquid outlet;

[0011] The support plate is fixedly arranged on the outer side of the inner shell and abuts against the inner wall of the kettle body.

[0012] Optionally, the top of the kettle body is connected with a bottom pipe, which enters the inner cavity and is located in the area between the air guide pipe and the cooling pipe and extends downward to the bottom of the inner shell. The bottom pipe is fixed to the bottom of the inner shell and is coiled in the semicircular area, then enters the side of the inner cavity and extends upward to the top of the inner cavity before passing through the kettle body;

[0013] There are two bottom tubes, which are symmetrically arranged around the axis of the inner shell.

[0014] Optionally, the support plates are located on both sides of the cooling pipe and the bottom pipe.

[0015] Optionally, a sponge pad is fixedly provided on the cooling tube and the bottom tube between the support plates, and the sponge pad abuts against the support plates on both sides.

[0016] Optionally, the cross-sections of the cooling pipe and the bottom pipe are both rectangular.

[0017] Optionally, the cooling tube and the square tube are both formed by welding a plurality of arc plates to each other and are welded to the outer wall of the inner shell.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] The inner shell is cooled by passing cooling liquid into the cooling pipe and the bottom pipe. The cooling pipe is introduced from the top to the bottom and spirals upward, and cooperates with the bottom pipe to effectively and evenly cool the bottom of the inner shell, thereby improving the efficiency and uniformity of cooling the material in the inner shell.

[0020] The location of the air guide pipe and the location of the cooling pipe can effectively utilize the inner cavity space, and can fully utilize the inner cavity space while ensuring the normal introduction of nitrogen and cooling, thereby reducing the probability of space occupation in the inner shell;

[0021] The support plate can stably support and fix the inner shell on the one hand, and effectively protect the cooling pipe, bottom pipe and air guide pipe on the other hand, and can also cooperate with the sponge pad to improve the protection effect of the cooling and bottom pipe;

[0022] The cross-sectional shape setting and welding component setting of the cooling pipe and the bottom pipe can be more conveniently installed on the inner shell in a serpentine manner, thereby improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0024] Figure 2 is a partial cross-sectional view showing the distribution of cooling pipes;

[0025] Figure 3 It is a partial cross-sectional view showing the bottom pipe distribution after hiding the support plate at the bottom of the inner shell.

[0026] In the figure, 1, kettle body; 11, inner cavity; 2, inner shell; 21, support plate; 22, sponge pad; 3, air guide pipe; 4, cooling pipe; 5, bottom pipe. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] The embodiment of the present application discloses a reaction kettle for preparing tetrasodium iminodisuccinate.

[0029] refer to Figure 1 , Figure 2 and Figure 3 The tetrasodium iminodisuccinate preparation reactor comprises a kettle body 1, an inner shell 2, an air guide pipe 3, a cooling pipe 4 and a bottom pipe 5. The inner shell 2 is installed inside the kettle body 1, and a plurality of support plates 21 abutting against the inner wall of the kettle body 1 are fixed on the outer wall of the inner shell 2, and the space between the inner shell 2 and the kettle body 1 is an inner cavity 11. There are two air guide pipes 3, which are symmetrically arranged with the axis of the inner shell 2 as the center. The air guide pipe 3 extends from the top of the side wall of the kettle body 1 into the inner cavity 11 and extends downward to the bottom of the kettle body 1 and then passes through the inner shell 2, and the bottom end of the air guide pipe 3 is opened downward. The air guide pipe 3 divides the inner cavity 11 into two opposite areas.

[0030] There are two cooling pipes 4, which are symmetrically arranged with the axis of the inner shell 2 as the center. After the cooling pipe 4 enters the inner cavity 11 from the top of the kettle body 1, it extends downward from one side of the air guide pipe 3 to the bottom of the inner cavity 11 and then extends to the other air guide pipe 3, and extends upward between the two air guide pipes 3 in a serpentine shape. After extending to the top of the inner cavity 11, the cooling pipe 4 passes through the kettle body 1 through the other air guide pipe 3 as an outlet for the cooling liquid. The cooling pipe 4 is fixedly connected to the outer wall of the inner shell 2.

[0031] There are two bottom tubes 5, which are symmetrically distributed with the axis of the inner shell 2 as the center. The bottom tube 5 enters the inner cavity 11 from the top of the kettle body 1, and extends downward between the air guide pipe 3 and the cooling pipe 4 to the bottom of the inner cavity 11, and then is distributed in a serpentine shape to the other side in the semicircular area on the lower surface of the inner shell 2, and then moves from the position between the air guide pipe 3 and the cooling pipe 4 on the other side to the top of the inner cavity 11 and then passes through the kettle body 1. The bottom tube 5 is fixedly connected to the inner shell 2.

[0032] The bottom tube 5 and the cooling tube 4 are both rectangular in cross section and are formed by welding a plurality of plates to each other and are fixed to the outer wall of the inner shell 2 by welding.

[0033] Nitrogen is provided to the space inside the inner shell 2 through the air guide 3, and the bottom part of the kettle body 1 is evenly cooled by passing cooling liquid into the cooling pipe 4 and the bottom pipe 5. The position setting of the cooling pipe 4, the bottom pipe 5 and the air guide 3 can effectively utilize the space of the inner cavity 11, and the water flow and winding setting of the bottom pipe 5 and the cooling pipe 4 can effectively improve the cooling effect on the bottom part of the kettle body 1 and improve the uniformity of cooling. The hotter cooling liquid is concentrated in the middle and top parts of the kettle body 1, which can better improve the cooling efficiency. The cross-sectional shape and plate welding setting of the cooling pipe 4 and the bottom pipe 5 can more conveniently install the corresponding track on the inner shell 2, improving the installation efficiency, and at the same time can also make the inlet and outlet of the cooling liquid and the inlet and outlet of the nitrogen concentrated on both sides of the kettle body 1, thereby facilitating maintenance and operation.

[0034] refer to Figure 2 The support plates 21 are located on both sides of the cooling tube 4 and the bottom tube 5, and the two support plates 21 sandwich the corresponding cold zone tube and the bottom tube 5. Sponge pads 22 are fixedly provided on the cooling tube 4 and the bottom tube 5 between the support plates 21, and the sponge pads 22 abut against the support plates 21 on both sides. The support plates 21 can effectively provide protection and support on both sides of the cooling tube 4 and the bottom tube 5, and the sponge pads 22 can further provide protection and insulation for the cooling tube 4 and the bottom tube 5, so as to improve the cooling efficiency of the cooling tube 4 and the bottom tube 5.

[0035] The implementation principle of the tetrasodium iminodisuccinate preparation reactor of the present application embodiment is as follows: the side of the kettle body 1 is cooled by the cooling tube 4, the bottom of the kettle body 1 is cooled by the bottom tube 5, and the space of the inner cavity 11 is effectively utilized by the distribution arrangement of the air guide tube 3, the cooling tube 4 and the bottom tube 5, thereby reducing the space occupied by the air guide tube 3 in the inner shell 2. At the same time, by the path arrangement of the cooling tube 4 and the bottom tube 5, the cooling liquid with a lower temperature first cools the bottom part of the kettle body 1, effectively improving the efficiency and uniformity of cooling the bottom of the kettle body 1, thereby increasing the yield of tetrasodium iminodisuccinate.

[0036] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reaction kettle for preparing tetrasodium iminodisuccinate, characterized in that: include Kettle body (1); The inner shell (2) is installed inside the kettle body (1), and has a discharge port at the bottom thereof which is connected to the discharge port of the kettle body (1). The space between the kettle body (1) and the inner shell (2) is an inner cavity (11); There are two air guide pipes (3), which are symmetrically arranged about the axis of the inner shell (2), extending from the top of the side wall of the kettle body (1) into the inner cavity (11) and extending downward to the bottom of the kettle body (1) and then passing through the inner shell (2), and the bottom end of the air guide pipe (3) is opened downward; There are two cooling pipes (4), which are symmetrically arranged about the axis of the inner shell (2), and enter the inner cavity (11) from the top of the kettle body (1), adhere to the outer wall of the inner shell (2) and extend downward, and then snake upward from the bottom to the top in the arc-shaped area of ​​half of the inner shell (2) to the top of the other side of the inner cavity (11), and then pass through the kettle body (1) to become a liquid outlet; The support plate (21) is fixedly arranged on the outer side of the inner shell (2) and abuts against the inner wall of the kettle body (1).

2. A reaction kettle for preparing tetrasodium iminodisuccinate according to claim 1, characterized in that: The top of the kettle body (1) is connected to a bottom pipe (5). After the bottom pipe (5) enters the inner cavity (11), it is located in the area between the air guide pipe (3) and the cooling pipe (4) and extends downward to the bottom of the inner shell (2). The bottom pipe (5) is fixed to the bottom of the inner shell (2) and is coiled in a semicircular area. After that, it enters the side of the inner cavity (11) and extends upward to the top of the inner cavity (11) and then passes through the kettle body (1); There are two bottom tubes (5) which are symmetrically arranged with respect to the axis of the inner shell (2).

3. A reaction kettle for preparing tetrasodium iminodisuccinate according to claim 2, characterized in that: The support plates (21) are located on both sides of the cooling tube (4) and the bottom tube (5).

4. A reaction kettle for preparing tetrasodium iminodisuccinate according to claim 3, characterized in that: A sponge pad (22) is fixedly provided on the cooling tube (4) and the bottom tube (5) between the support plates (21), and the sponge pad (22) abuts against the support plates (21) on both sides.

5. A reaction kettle for preparing tetrasodium iminodisuccinate according to claim 2, characterized in that: The cross sections of the cooling tube (4) and the bottom tube (5) are both rectangular.

6. A reaction kettle for preparing tetrasodium iminodisuccinate according to claim 5, characterized in that: The cooling tube (4) and the square tube are both formed by welding a plurality of arc plates together, and are welded to the outer wall of the inner shell (2).

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