Cyclohexanone preparation device in caprolactam production process

Abstract

The utility model relates to a cyclohexanone manufacturing device, belongs to the technical field of cyclohexanone production, and particularly relates to a cyclohexanone manufacturing device in a caprolactam production process, which comprises a rectifying tower main body fixedly connected with an air inlet pipe; according to the rectifying tower, part of steam is conveyed into the conveying pipe through the air pump, then enters the connecting pipe through the conveying pipe, enters the air conveying pipe along the connecting pipe and is sprayed out of the air outlet pipe, the steam enters the rectifying tower body, and due to the fact that the air outlet pipe is located at different positions of the rectifying tower body, the steam can be conveyed to different positions in the rectifying tower body. The steam conveying speed is increased, the production efficiency of the device is improved, the water baffle shields the air outlet pipe to prevent stock solution from entering the air outlet pipe when the stock solution is added, the situation that the air outlet pipe is blocked by liquid after steam liquefaction can be effectively reduced through the obliquely arranged air outlet pipe, and therefore the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cyclohexanone manufacturing device technical field, specifically a kind of cyclohexanone manufacturing device in caprolactam production process. BACKGROUND

[0002] In caprolactam production process, cyclohexanone is one of the key intermediates, in order to efficiently, safely produce cyclohexanone, a special production device needs to be designed.

[0003] The Chinese patent with publication number CN215585489U discloses a kind of cyclohexanone high-efficiency separation refining device, comprising: rectifying tower main part, the two sides of the outer surface of rectifying tower main part are respectively provided with gas inlet and liquid inlet;Heating device, heating device is set in the inside of rectifying tower main part, heating device includes fixed plate, the top and bottom of the outer surface of fixed plate are sequentially fixedly connected with multiple lugs from left to right.The patent is set on the two sides of the inner wall of rectifying tower main part and cooperates with lug and communication hole can flow rapidly in the inside of entire rectifying tower main part, lug is set on the top and bottom of the outer surface of fixed plate can increase the vapor contact surface of reactant when transported to the inside of fixed plate, heating speed block, using gas inlet and air inlet pipe, pump body, conveying pipe, air outlet pipe can simultaneously carry out vapor transport to two positions, to improve the time and speed of chemical substance projection in the inside of rectifying tower main part.

[0004] In the above technical scheme, the liquid inlet is located in the upper half of the rectifying tower main body. When the raw liquid is added, the liquid is easy to enter the fixed plate through the communication hole, and then enter the conveying pipe and meet the pump body, which is easy to cause the pump body to be damaged. Moreover, the vapor is easy to block the communication hole after being liquefied, so that the vapor cannot be discharged from the communication hole.

[0005] Based on this, the present application provides a kind of cyclohexanone manufacturing device in caprolactam production process. UTILITY MODEL CONTENTS

[0006] To solve the above technical problems, the utility model provides a kind of cyclohexanone manufacturing device in caprolactam production process, can be blocked by baffle for air outlet pipe, prevent raw liquid from entering air outlet pipe when raw liquid is added, the liquid blocking air outlet pipe after vapor liquefaction can be effectively reduced by the air outlet pipe arranged obliquely, to improve the practicability of the device.

[0007] The technical solution for achieving the purpose of the utility model is as follows: a kind of cyclohexanone manufacturing device in caprolactam production process, comprising a rectifying tower main body, the rectifying tower main body is fixedly connected with gas inlet pipe, further comprising;

[0008] A plurality of fixed rods are fixedly connected in the rectifying tower body, a plurality of fixed boxes are fixedly connected on the plurality of fixed rods respectively, a plurality of gas conveying pipes are fixedly connected on the plurality of fixed boxes respectively, a plurality of gas outlet pipes are fixedly connected on the plurality of gas conveying pipes respectively, and a plurality of water baffle plates are fixedly connected on the plurality of fixed boxes respectively.

[0009] Preferably, the air inlet pipe is fixedly connected with an air pump, the air pump is fixedly connected with a conveying pipe, a plurality of connecting pipes are fixedly connected on the plurality of gas conveying pipes respectively, and the plurality of connecting pipes are fixedly connected on the conveying pipe.

[0010] Preferably, the rectifying tower body is fixedly connected with a fixed frame, a sliding cover is slidingly connected on the fixed frame, and a heat preservation layer is fixedly connected on the sliding cover.

[0011] Preferably, a plurality of through holes one and a plurality of through holes two are arranged on the plurality of fixed boxes respectively, and the through holes one and the through holes two are arranged in a ring array with the center of the fixed box as the center.

[0012] Preferably, the rectifying tower body is fixedly connected with a liquid inlet pipe, and the rectifying tower body is fixedly connected with a lower communication pipe and an upper communication pipe.

[0013] Preferably, the plurality of fixed boxes are arranged in a linear array in the rectifying tower body, and the angle between the gas outlet pipe and the horizontal plane is 45 degrees.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] Firstly, in the present application, part of the steam is introduced into the conveying pipe by the air pump, then enters the connecting pipe from the conveying pipe, enters the gas conveying pipe along the connecting pipe, and is sprayed out from the gas outlet pipe. The steam enters the rectifying tower body. Since the gas outlet pipe is located at different positions of the rectifying tower body, the steam can be delivered to different positions in the rectifying tower body, thereby accelerating the steam delivery speed and improving the production efficiency of the device.

[0016] Secondly, in the present application, the water baffle plate shields the gas outlet pipe to prevent the raw liquid from entering the gas outlet pipe when the raw liquid is added. The inclined gas outlet pipe can effectively reduce the situation that the liquid after steam liquefaction blocks the gas outlet pipe, thereby improving the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further explained in combination with the drawings and embodiments:

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0019] Figure 2 is a sectional view of the present application;

[0020] Figure 3 is a schematic view of the gas delivery assembly structure of the utility model;

[0021] Figure 4 is Figure 2 the structure of part A in the middle.

[0022] Reference signs:

[0023] 1, rectifying tower main body; 2, liquid inlet pipe; 3, lower communication pipe; 4, upper communication pipe; 5, gas inlet pipe; 6, fixed frame; 7, sliding cover; 8, heat preservation layer; 9, fixed rod; 10, fixed box; 11, gas delivery pipe; 12, gas outlet pipe; 13, water baffle; 14, through hole one; 15, through hole two; 16, connecting pipe; 17, conveying pipe; 18, air pump. DETAILED DESCRIPTION

[0024] The utility model will be described in detail below, and the technical scheme in the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] The utility model discloses a cyclohexanone manufacturing device in caprolactam production process is provided, the technical scheme of the utility model is:

[0026] As Figures 1-4 shown, a cyclohexanone manufacturing device in caprolactam production process, including rectifying tower main body 1, rectifying tower main body 1 is fixedly connected with gas inlet pipe 5, still including;

[0027] Fixed rod 9, a plurality of fixed rods 9 are fixedly connected in rectifying tower main body 1, a plurality of fixed boxes 10 are fixedly connected on a plurality of fixed rods 9 respectively, the section of fixed box 10 is " U " character, a plurality of gas delivery pipes 11 are fixedly connected on a plurality of fixed boxes 10 respectively, gas delivery pipe 11 is fixed on the outer wall of fixed box 10, a plurality of gas outlet pipes 12 are fixedly connected on a plurality of gas delivery pipes 11 respectively, gas outlet pipe 12 is circular array distribution with the center of fixed box 10 as the center, a plurality of water baffles 13 are fixedly connected on a plurality of fixed boxes 10 respectively, the top of water baffle 13 is arc-shaped, and the water baffle 13 is shielded for gas outlet pipe 12, to prevent the original liquid from entering gas outlet pipe 12 when adding the original liquid.

[0028] Further, as Figures 2-4As shown, the air inlet pipe 5 is fixed with an air pump 18 by bolts, the air pump 18 is fixedly connected with a conveying pipe 17, a plurality of connecting pipes 16 are fixedly connected with a plurality of air conveying pipes 11 respectively, the air conveying pipes 11 and the connecting pipes 16 are vertically distributed, and the plurality of connecting pipes 16 are fixedly connected with the conveying pipe 17.

[0029] Further, as shown in Figures 1-4 The rectifying tower body 1 is fixedly connected with a fixed frame 6, the cross section of the fixed frame 6 is in the shape of "L", the fixed frame 6 is slidingly connected with a sliding cover 7, the cross section of the sliding cover 7 is in the shape of "L", and the sliding cover 7 is fixedly connected with a heat preservation layer 8. The heat preservation layer 8 is arranged to preserve the steam in the conveying pipe 17.

[0030] Further, as shown in Figures 2-4 A plurality of through holes one 14 and a plurality of through holes two 15 are arranged on the plurality of fixed boxes 10 respectively, the through holes one 14 and the through holes two 15 are arranged in a circular array with the center of the fixed box 10 as the center, the through holes two 15 are located between the fixed box 10 and the water baffle 13, the diameter of the through holes two 15 is smaller than the diameter of the through holes one 14, when the steam is liquefied, the steam will flow down along the outer wall or the inner wall of the water baffle 13 and fall from the through holes two 15 or the through holes one 14.

[0031] Further, as shown in Figure 1 And Figure 2 The rectifying tower body 1 is fixedly connected with a liquid inlet pipe 2, the liquid inlet pipe 2 is used to add raw liquid, and the rectifying tower body 1 is fixedly connected with a lower communication pipe 3 and an upper communication pipe 4.

[0032] Further, as shown in Figures 2-4 The plurality of fixed boxes 10 are arranged in a linear array in the rectifying tower body 1, and the angle between the air outlet pipe 12 and the horizontal plane is 45 degrees. The air outlet pipe 12 is arranged obliquely, which can effectively reduce the situation that the liquid after the steam is liquefied blocks the air outlet pipe 12, thereby improving the practicability of the device.

[0033] The specific working method is: when the raw solution is added through the liquid inlet pipe 2, the raw solution meets the water baffle 13, because the top of the water baffle 13 is an arc surface, so the raw material falls along the water baffle 13, falls on the fixed box 10, then falls along the through hole 14, and falls into the bottom of the rectifying tower main body 1, when steam heating is carried out, the gas inlet pipe 5 is connected with external equipment, steam conveying is carried out, when the steam enters the inside of the rectifying tower main body through the gas inlet pipe 5, the gas pump 18 is started, the gas pump 18 can extract part of the steam into the conveying pipe 17, then enters the connecting pipe 16 through the conveying pipe 17, enters the gas conveying pipe 11 along the connecting pipe 16, is sprayed from the gas outlet pipe 12, and the steam enters the rectifying tower main body 1. Because the gas outlet pipe 12 is located at different positions of the rectifying tower main body 1, steam can be conveyed to different positions of the rectifying tower main body 1, so that the steam conveying speed is accelerated, and the production efficiency of the device is improved.

[0034] The technical means disclosed by the utility model scheme is not only limited to the technical means disclosed by the above technical means, but also includes the technical scheme composed by the above technical features and equivalent replacement. The unfinished matters of the utility model belong to the common knowledge of the person skilled in the art.

Claims

1. A cyclohexanone production device in a caprolactam production process, comprising a rectifying column main body (1), characterized in that: The rectifying tower main body (1) is fixedly connected with an air inlet pipe (5), and further comprises; A plurality of fixed rods (9) are fixedly connected in the rectifying tower main body (1), a plurality of fixed boxes (10) are fixedly connected on the fixed rods (9) respectively, a plurality of air inlet pipes (11) are fixedly connected on the fixed boxes (10) respectively, a plurality of air outlet pipes (12) are fixedly connected on the air inlet pipes (11) respectively, and a plurality of water baffle plates (13) are fixedly connected on the fixed boxes (10) respectively.

2. A cyclohexanone production apparatus in a caprolactam production process according to claim 1, characterized by: An air pump (18) is fixedly connected on the air inlet pipe (5), a conveying pipe (17) is fixedly connected on the air pump (18), a plurality of connecting pipes (16) are fixedly connected on the air inlet pipes (11) respectively, and the connecting pipes (16) are fixedly connected on the conveying pipe (17).

3. The apparatus for producing cyclohexanone in a caprolactam production process according to claim 1, characterized by: A fixed frame (6) is fixedly connected on the rectifying tower main body (1), a sliding cover (7) is slidingly connected on the fixed frame (6), and a heat preservation layer (8) is fixedly connected on the sliding cover (7).

4. The cyclohexanone production apparatus in a caprolactam production process according to claim 1, characterized by: A plurality of through holes (14) and a plurality of through holes (15) are arranged on the fixed boxes (10) respectively, and the through holes (14) and the through holes (15) are arranged in a ring array with the center of the fixed box (10) as the center.

5. The cyclohexanone production apparatus in a caprolactam production process according to claim 1, wherein: An inlet pipe (2) is fixedly connected on the rectifying tower main body (1), and a lower communication pipe (3) and an upper communication pipe (4) are fixedly connected on the rectifying tower main body (1).

6. A cyclohexanone production apparatus in a caprolactam production process according to claim 1, characterized by: The fixed boxes (10) are arranged in a linear array in the rectifying tower main body (1), and the air outlet pipes (12) form an angle of 45 degrees with the horizontal plane.

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