Neopentyl glycol production raw material adding device

Abstract

The utility model belongs to the technical field of neopentyl glycol production, and particularly relates to a raw material adding device for neopentyl glycol production. The device comprises a reaction tank body, the top of the reaction tank body is provided with a top cover, the bottom of the reaction tank body is provided with a discharge port, the reaction tank body is internally provided with an inner tank body, the inner tank body is provided with an atomization nozzle, and the bottom of the inner tank body is provided with an atomization mechanism; a feeding hole is formed in the reaction tank body, the feeding end of the feeding hole is connected with a first connecting pipe, and the first connecting pipe is connected with a formaldehyde tank; a discharge hole is formed in the bottom of the reaction tank body, and an adding hole is formed in the reaction tank body. Isobutyraldehyde is contained in the inner tank body, formaldehyde enters the space between the inner tank body and the reaction tank body, the atomizing machine is started, isobutyraldehyde enters the space between the inner tank body and the reaction tank body in an atomized state, other raw materials are added through the adding opening, in the reaction process, liquid dripped into the bottom in the reaction tank body is atomized through the atomizing mechanism, and formaldehyde is added into the space between the inner tank body and the reaction tank body. And the reaction is continuous and sufficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of neopentyl glycol production, and particularly relates to a device for adding raw materials for neopentyl glycol production. Background Art

[0002] The main raw materials for neopentyl glycol production include isobutyraldehyde and formaldehyde, and the costs of isobutyraldehyde and formaldehyde account for about 85% of the total cost of neopentyl glycol. These raw materials need to be processed and transformed through complex chemical reactions. Specifically, the production of neopentyl glycol mainly involves the condensation reaction of isobutyraldehyde and formaldehyde under the action of a catalyst to produce hydroxypivalaldehyde (HPA), and then neopentyl glycol is obtained through a reduction reaction. The main raw materials of neopentyl glycol are isobutyraldehyde and formaldehyde. After the reduction reaction, the crude product needs to be refined through steps such as heating and dehydration to improve the purity of neopentyl glycol.

[0003] The existing equipment used in the reaction process of isobutyraldehyde and formaldehyde adopts the method of introducing formaldehyde into a tank filled with isobutyraldehyde, and then stirring it with a stirrer to make it react. This equipment has the problem that the reaction between formaldehyde and isobutyraldehyde is not sufficient during the stirring process. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for adding raw materials for neopentyl glycol production, so that the reaction is sufficient after the addition of raw materials for neopentyl glycol production.

[0005] The device for adding raw materials for neopentyl glycol production includes a reaction tank body arranged vertically. The top of the reaction tank body is provided with a top cover, and the bottom of the reaction tank body is provided with a discharge port. An inner tank body is independently arranged vertically in the reaction tank body. The inner tank body is in a barrel structure, and its top is fixed on the lower surface of the top cover. The inner tank body is provided with a plurality of atomizing nozzles for spraying, and an atomizing mechanism is installed at the bottom of the inner tank body;

[0006] The reaction tank body is provided with a feed port. The feed end of the feed port is connected with a first connecting pipe for conveying formaldehyde into the reaction tank body. One end of the first connecting pipe is connected with the feed port, and the other end is connected with a formaldehyde tank;

[0007] The bottom of the reaction tank body is provided with a discharge port, and the reaction tank body is provided with an addition port.

[0008] Isobutyraldehyde is contained in the inner tank body. Formaldehyde in the formaldehyde tank enters the space between the inner tank body and the reaction tank body through the first connecting pipe. The atomizing machine is turned on, so that the isobutyraldehyde in the inner tank body enters the space between the inner tank body and the reaction tank body in an atomized state. Other raw materials are added through the addition port. During the reaction process, the liquid dripping into the bottom of the reaction tank body is atomized through the atomizing mechanism, so that the reaction proceeds continuously. After the reaction is completed, it is discharged through the discharge port. After continuous atomization, the reaction occurs in the reaction tank body, making the reaction sufficient.

[0009] Furthermore, a connection port communicating with the interior of the inner tank body is provided on the top cover.

[0010] Connecting to the inner tank body through the connection port facilitates the addition of isobutyraldehyde into the inner tank body.

[0011] Furthermore, a second connecting pipe is connected to the discharging end of the discharging port, and a regulating valve is installed on the second connecting pipe.

[0012] The regulating valve is used to open and close the discharging port, facilitating the discharge of the liquid after the reaction.

[0013] Furthermore, a first base is provided below the reaction tank body. An evaporation chamber is provided inside the first base. One end of the second connecting pipe is connected to the discharging port, and the other end is connected to the evaporation chamber.

[0014] The liquid after the reaction enters the evaporation chamber through the second connecting pipe. Through evaporation, unreacted raw materials and impurities are removed.

[0015] Furthermore, a discharge port is provided on the first base at the bottom of the evaporation chamber. A sealing block capable of moving left and right is installed at the discharge port. When the sealing block moves to the discharge port, the discharge port can be sealed.

[0016] Furthermore, a first groove with an opening facing right is provided on the first base. A telescopic rod capable of stretching left and right is horizontally provided inside the first groove. The left end of the telescopic rod is connected to the sealing block, and the right end of the telescopic rod is connected to a motor.

[0017] The motor drives the telescopic rod to stretch left and right, driving the sealing block to move left and right, realizing the opening and closing of the discharge port.

[0018] Furthermore, a second base is provided at the bottom of the first base. A storage box is provided on the second base. A second groove with an opening facing right is provided at the right end of the storage box. A third connecting pipe is installed inside the second groove. One end of the third connecting pipe is connected to the storage box.

[0019] The liquid processed by the evaporation chamber enters the storage box, is cooled, and is connected to the next processing mechanism through the third connecting pipe.

[0020] Furthermore, a support frame is installed at the bottom of the reaction tank body.

[0021] The support frame raises the reaction tank body, facilitating the sequential downward connection and installation of the second connecting pipe, the first base, and the second base, without occupying extra space, and flowing downward, making it easier to discharge.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The inner tank is filled with isobutyraldehyde. The formaldehyde in the formaldehyde tank enters the space between the inner tank and the reaction tank through the first connecting pipe. The atomizer is turned on to make the isobutyraldehyde in the inner tank enter the space between the inner tank and the reaction tank in an atomized state. Other raw materials are added through the addition port. During the reaction process, the liquid dropped into the bottom of the reaction tank is atomized by the atomization mechanism to continuously carry out the reaction. After the reaction is completed, it is discharged through the discharge port. After continuous atomization, the reaction occurs in the reaction tank to make the reaction sufficient. Description of the Drawings

[0024] Figure 1 is a front view structural schematic diagram of a neopentyl glycol production raw material adding device;

[0025] Figure 2 is Figure 1 the right view of;

[0026] Figure 3 is Figure 1 the top view of;

[0027] Figure 4 is Figure 1 the three-dimensional structural schematic diagram of;

[0028] Figure 5 is Figure 4 the explosion structural schematic diagram of.

[0029] Names of each component in the figure: 1. Formaldehyde tank; 2. First connecting pipe; 3. Top cover; 4. Inner tank; 5. Reaction tank; 6. Atomization mechanism; 7. Second connecting pipe; 8. Regulating valve; 9. First base; 10. Evaporation chamber; 11. First groove; 12. Motor; 13. Second groove; 14. Third connecting pipe; 15. Storage box; 16. Second base; 17. Sealing block; 18. Support frame; 19. Connection port. Detailed Implementation Modes

[0030] The following further illustrates the present invention through specific embodiments with reference to the drawings, but the present invention is not limited thereto. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0031] Embodiment

[0032] The following materials are used in this embodiment:

[0033] 1. Prepare two cylindrical tanks, one larger and one smaller. The larger tank can hold the smaller tank, and after the smaller tank is placed in the larger tank, there is a certain space between the smaller tank and the larger tank. The smaller tank serves as the inner tank 4, and the larger tank serves as the reaction tank 5;

[0034] 2. Prepare the top cover 3 that can seal the reaction tank body 5, and the inner tank body 4 is fixed on the lower surface of the top cover 3;

[0035] 3. Prepare a first base 9 made of high-temperature resistant material;

[0036] 4. Prepare a set of atomization mechanism 6, an atomizer and several nozzles;

[0037] 5. Prepare a set of motors 12;

[0038] 6. Prepare two steel pipes with regulating valves 8 as the first connecting pipe 2 and the second connecting pipe 7;

[0039] 7. Prepare a sealing block 17 made of graphite crucible or thermosetting and other high-temperature resistant materials;

[0040] 8. Prepare the third connecting pipe 14, the storage box 15, the second base 16, and the support frame 18 made of stainless steel materials.

[0041] The assembly method of the above materials is as follows:

[0042] The first step: Processing

[0043] Process the first base 9. As Figure 5 shown, the first base 9 is cylindrical as a whole, with the top processed into a rounded corner. An evaporation chamber 10 is provided inside the first base 9. A discharge port is provided on the first base 9 at the bottom of the evaporation chamber 10, and a circular opening with the same diameter as the second connecting pipe 7 is opened at the top of the first base 9. As Figure 1 shown, at the bottom of the first base 9, at the Figure 2 bottom center shown, process the first groove 11. The opening of the first groove 11 faces right as Figure 1 shown.

[0044] Process the second base 16. As Figure 2 and Figure 5 shown, the second base 16 is a frustum of a cone structure as a whole. As Figure 2 shown, at the center of the top of the second base 16, process the second groove 13. The opening of the second groove 13 faces right as Figure 1 shown.

[0045] Process the sealing block 17. The sealing block 17 is in sealing fit with the discharge port at the bottom of the evaporation chamber 10.

[0046] Process the support frame 18. The support frame 18 mainly plays a supporting role, and its shape and processing technology can be processed according to the existing technology.

[0047] Process the third connecting pipe 14. As Figure 5 shown, the third connecting pipe 14 is a tubular structure.

[0048] Process the storage box 15. AsFigure 5 As shown, the storage box 15 is a cuboid structure with a hollow interior. A storage box 15 sized to fit into the second groove 13 is machined according to the structure of the second groove 13. An opening connected to the third connecting pipe 14 is provided on the storage box 15, and a liquid inlet is provided at the top.

[0049] Machine the top cover 3, as Figure 5 shown. The top cover 3 is an overall arc-shaped structure. A connection port 19 is opened at the center of the top of the top cover 3, as Figure 1 , Figure 3 and Figure 5 shown. The overall structure of the connection port 19 is in the shape of a "funnel", and the processing technology can refer to the production of traditional funnels. As Figure 2 shown, a feed port of the same size as the first connecting pipe 2 is opened at the right position on the top cover 3.

[0050] Machine the inner tank body 4. Place the inner tank body 4 with the opening facing upwards, install an atomization mechanism 6 at the bottom, and install atomizing nozzles on the side wall. The number can be set according to the fineness and speed of atomization.

[0051] Step 2: Installation

[0052] As Figure 1 and Figure 2 shown, horizontally place the second base 16. As Figure 1 shown, weld one end of the third connecting pipe 14 to one end of the storage box 15. Place the storage box 15 into the second groove 13, and align the liquid inlet with the discharge port of the evaporation chamber 10.

[0053] As Figure 1 and Figure 2 shown, place the first base 9 with the chamfered corner facing upwards and install it on the top of the second base 16. As Figure 1 shown, install a sealing block 17 at the leftmost side in the first groove 11. Connect the right end to the telescopic end of the telescopic rod, and connect the power input end of the telescopic rod to the power output end of the motor 12.

[0054] As Figure 1 shown, install the atomization mechanism 6 at the bottom of the inner tank body 4.

[0055] As Figure 1 shown, weld the top cover 3 to the top of the reaction tank body 5 to prevent leakage. Install the first connecting pipe 2 at the feed port and connect it to the formaldehyde tank 1. Install an atomizer on the top cover 3 and connect it to the atomizing nozzles.

[0056] As Figure 2 and Figure 4 shown, install the support frame 18 at the bottom of the reaction tank body 5 and connect it to the first base 9.

[0057] The usage instructions are as follows:

[0058] Formaldehyde enters the reaction tank body 5 through the first connecting pipe 2, and liquid isobutyraldehyde enters the inner tank body 4 from the connecting port 19. The atomizing nozzle atomizes isobutyraldehyde through an atomizer and sprays it out, fully reacting with the formaldehyde gas. During the reaction process, the liquid at the bottom of the reaction tank body 5 is atomized through the atomizing mechanism 6 to continuously carry out the reaction. After the reaction is completed, it is discharged through the discharge port, continuously carrying out the atomizing reaction to make the reaction sufficient.

[0059] After the reaction is completed, the regulating valve 8 is opened, and the solution enters the evaporation chamber 10. After evaporation, it is discharged into the storage box 15 through the discharge port, and then enters the next processing mechanism through the third connecting pipe 14.

Claims

1. A raw material adding device for producing neopentyl glycol, comprising a vertically arranged reaction tank body (5), a top cover (3) being arranged on the top of the reaction tank body (5), and a discharge port being arranged on the bottom of the reaction tank body (5), characterized in that: An inner tank body (4) is independently and vertically arranged inside the reaction tank body (5); the inner tank body (4) is a barrel structure, the top of which is fixed on the lower surface of the top cover (3); a plurality of atomizing nozzles for spraying are arranged on the inner tank body (4); and an atomizing mechanism (6) is installed at the bottom of the inner tank body (4); The reaction tank body (5) is provided with a feed port, the feed end of which is connected to a first connecting pipe (2) for conveying formaldehyde into the reaction tank body (5), one end of the first connecting pipe (2) is connected to the feed port, and the other end is connected to the formaldehyde tank (1); The bottom of the reaction tank body (5) is provided with a discharge port, and the reaction tank body (5) is provided with a feed port.

2. The device for adding raw materials for producing neopentyl glycol according to claim 1, characterized in that: The top cover (3) is provided with a connection port (19) which communicates with the interior of the inner tank body (4).

3. The device for adding raw materials for producing neopentyl glycol according to claim 2, characterized in that: The discharge end of the discharge port is connected to a second connecting pipe (7), and a regulating valve (8) is installed on the second connecting pipe (7).

4. The device for adding raw materials for producing neopentyl glycol according to claim 3, characterized in that: A first base (9) is provided below the reaction tank body (5), an evaporation chamber (10) is provided in the first base (9), one end of the second connecting pipe (7) is connected to the discharge port, and the other end is connected to the evaporation chamber (10).

5. The device for adding raw materials for producing neopentyl glycol according to claim 4, characterized in that: A discharge port is provided on the first base (9) at the bottom of the evaporation chamber (10), and a sealing block (17) that can move leftward and rightward is installed at the discharge port. When the sealing block (17) moves to the discharge port, the discharge port can be sealed.

6. The device for adding raw materials for producing neopentyl glycol according to claim 5, characterized in that: The first base (9) is provided with a first groove (11) opening to the right, and a telescopic rod capable of being telescoped to the left and right is transversely provided in the first groove (11), the left end of the telescopic rod is connected to a sealing block (17), and the right end of the telescopic rod is connected to a motor (12).

7. The device for adding raw materials for producing neopentyl glycol according to claim 6, characterized in that: A second base (16) is provided at the bottom of the first base (9), a storage box (15) is provided on the second base (16), a second groove (13) with an opening facing rightward is provided at the right end of the storage box (15), a third connecting pipe (14) is installed in the second groove (13), and one end of the third connecting pipe (14) is connected to the storage box (15).

8. The device for adding raw materials for producing neopentyl glycol according to claim 7, characterized in that: A support frame (18) is installed at the bottom of the reaction tank body (5).

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