Reflux device for rectifying and purifying methyl isobutyl ketone

Abstract

The utility model relates to the technical field of rectification and purification, and discloses a reflux device for rectification and purification of methyl isobutyl ketone, which comprises a support frame, a rectification tower is fixedly connected to the middle of the top wall of the support frame, a reflux pump is fixedly connected to the top of the outer wall of the rectification tower, and the other end of the reflux pump is communicated with a condenser. The condenser is fixedly connected to the rear side of the outer wall of the rectifying tower, the flow control system is fixedly connected to the bottom of the outer wall of the connecting pipe, and a closing mechanism is arranged in the middle of the inner wall of the supporting frame and used for preventing a backflow valve. According to the methyl isobutyl ketone rectifying and purifying device, methyl isobutyl ketone mixed liquid is heated in the rectifying tower, low-boiling-point components are vaporized and rise, high-boiling-point impurities are left at the bottom of the tower and pumped to the condenser through the reflux pump, liquid enters the reflux tank through the conveying pipe, condensate is stored in the reflux tank, and stable operation and cooperative work of the device are ensured through the supporting frame so as to rectify and purify methyl isobutyl ketone.

Description

Technical Field

[0001] This utility model relates to the field of preserved egg processing technology, and in particular to a reflux device for the distillation and purification of methyl isobutyl ketone. Background Technology

[0002] Methyl isobutyl ketone (MBE) is a colorless and transparent liquid that is volatile and has a camphor-like odor. It is an excellent medium-boiling-point solvent and chemical intermediate. During the production of MBE, some impurities may be mixed in. By purifying and refluxing through distillation, the difference in boiling points between MBE and the impurities can be utilized to repeatedly vaporize and condense the MBE in the distillation column, thereby separating the impurities. High-purity MBE can ensure the quality and performance of the product.

[0003] A reflux reflux unit for the distillation and purification of methyl isobutyl ketone (MBE) is a device used to achieve reflux operation during the MBE distillation and purification process. The function of the reflux reflux unit is to condense a portion of the vaporous MBE distilled from the top of the distillation column into liquid, and then return this liquid to the distillation column. This maintains heat balance, ensures the stability of the distillation process, improves separation accuracy, and enhances the separation precision of MBE from other impurities, resulting in a high-purity product. However, in existing MBE distillation and purification reflux reflux units, the separation effect of some tiny droplets and impurity particles entrained in the vapor phase is limited. These tiny droplets and impurity particles will re-enter the distillation column with the reflux liquid, affecting the mass transfer process within the distillation column and reducing separation efficiency. This limited separation effect of the reflux reflux unit becomes a factor restricting the improvement of product quality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a reflux reflux device for the distillation and purification of methyl isobutyl ketone, aiming to improve the limited separation effect of the existing technology, which affects the mass transfer process in the distillation column and reduces the separation efficiency. This limited separation effect of the reflux reflux device can become a factor restricting the improvement of product quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a reflux device for the distillation purification of methyl isobutyl ketone, comprising a support frame, a distillation column fixedly connected to the middle of the top wall of the support frame, a reflux pump fixedly connected to the top of the outer wall of the distillation column, a condenser connected to the other end of the reflux pump, the condenser fixedly connected to the rear side of the outer wall of the distillation column, a conveying pipe connected to the right side of both the condenser and the outer wall of the distillation column, a reflux tank connected to the right end of the outer wall of the conveying pipe, a discharge pipe fixedly connected to the right side of the outer wall of the reflux tank, a connecting pipe fixedly connected to the rear bottom side of the discharge pipe, a conduit fixedly connected to the bottom right side of both the condenser and the distillation column, a flow control system installed on the right side of the outer wall of each conduit, the flow control system fixedly connected to the bottom of the outer wall of the connecting pipe, and a closing mechanism provided in the middle of the inner wall of the support frame, the closing mechanism being used to prevent backflow.

[0006] As a further description of the above technical solution:

[0007] The closing mechanism includes a connecting cylinder, which is disposed in the middle of the inner wall of the support frame. An adjustment handle is rotatably connected to the right side of the outer wall of the connecting cylinder. A support tube is fixedly connected to the top of the outer wall of the front connecting cylinder. A fixed shell is fixedly connected to the adjacent side of the outer wall of the two adjustment handles. A spring is fixedly connected to the front side of the inner wall of the fixed shell. A closing plug is fixedly connected to the front side of the outer wall of the spring. A sealing plug is fixedly connected to the rear side of the inner wall of the fixed shell. A fixing block is fixedly connected to the rear side of the inner wall of the sealing plug. A connecting frame is fixedly connected to the bottom of the outer wall of the fixed shell.

[0008] As a further description of the above technical solution:

[0009] A baffle is fixedly connected to the top of the outer wall of the fixed shell, and bolts are threadedly connected to the four corners of the top of the baffle.

[0010] As a further description of the above technical solution:

[0011] A fixed frame is fixedly connected to the top of the outer wall of the support frame, and a ladder is fixedly connected to the rear side of the outer wall of the support frame.

[0012] As a further description of the above technical solution:

[0013] A fixing ring is fixedly connected to the middle of the outer wall of the conveying pipe, and a handle is rotatably connected to the top of the outer wall of the fixing ring.

[0014] As a further description of the above technical solution:

[0015] An adjusting rod is rotatably connected to the front side of the outer wall of the reflux pump, and a cover plate is fixedly connected to the bottom of the outer wall of the adjusting rod.

[0016] As a further description of the above technical solution:

[0017] A connecting sleeve is fixedly connected to the bottom of the outer wall of the discharge pipe, and a switch is rotatably connected to the left side of the outer wall of the connecting sleeve.

[0018] As a further description of the above technical solution:

[0019] A discharge pipe is connected to the rear side of the outer wall of the condenser, and a valve is installed on the top of the outer wall of the discharge pipe.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the methyl isobutyl ketone mixture is heated in a distillation column. The low-boiling-point components vaporize and rise, while the high-boiling-point impurities remain at the bottom of the column and are pumped to the condenser by a reflux pump. The liquid enters the reflux tank through a delivery pipe. The reflux tank stores the condensate. The flow control system on the conduit regulates the liquid reflux into the distillation column to maintain a suitable reflux ratio to improve mass transfer efficiency. Part of the liquid in the reflux tank is refluxed, and part is led out as product through the discharge pipe. The support frame ensures stable operation of the equipment. They work together to purify methyl isobutyl ketone through distillation.

[0022] 2. In this utility model, the connecting cylinder is located in the middle of the inner wall of the support frame, providing rotational support for the adjustment handle for adjusting the fixed shell component. The support tube is fixed to the top of the outer wall of the connecting cylinder. The spring inside the fixed shell connects to the closing plug. The elastic potential energy of the spring allows the closing plug to reciprocate, realizing the one-way valve function. The sealing plug ensures the sealing of the inside of the fixed shell. The fixing block provides the force point. The connecting frame connects the fixed shell with other components to ensure working stability. Attached Figure Description

[0023] Figure 1 This is a perspective view of a reflux reflux device for the distillation and purification of methyl isobutyl ketone proposed in this utility model;

[0024] Figure 2 This is a front view of a reflux accumulator for the distillation and purification of methyl isobutyl ketone proposed in this utility model;

[0025] Figure 3 This is a side view of a reflux reflux device for the distillation and purification of methyl isobutyl ketone proposed in this utility model;

[0026] Figure 4 This is a partial structural diagram of a reflux reflux device for the distillation and purification of methyl isobutyl ketone proposed in this utility model;

[0027] Figure 5 This is a split diagram of the closed mechanism of a reflux reflux device for the distillation and purification of methyl isobutyl ketone proposed in this utility model.

[0028] Legend:

[0029] 1. Support frame; 2. Closing mechanism; 201. Connecting cylinder; 202. Adjusting handle; 203. Support pipe; 204. Fixed shell; 205. Spring; 206. Closing plug; 207. Sealing plug; 208. Fixing block; 209. Connecting frame; 3. Distillation column; 4. Reflux pump; 5. Condenser; 6. Delivery pipe; 7. Reflux tank; 8. Discharge pipe; 9. Connecting pipe; 10. Conduit; 11. Flow control system; 12. Baffle; 13. Bolt; 14. Fixing frame; 15. Ladder; 16. Fixing ring; 17. Rotary handle; 18. Adjusting rod; 19. Cover plate; 20. Connecting sleeve; 21. Switch; 22. Discharge pipe; 23. Valve II. Detailed Implementation

[0030] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a reflux device for the distillation purification of methyl isobutyl ketone, comprising a support frame 1, a distillation column 3 fixedly connected to the middle of the top wall of the support frame 1, a reflux pump 4 fixedly connected to the top of the outer wall of the distillation column 3, a condenser 5 connected to the other end of the reflux pump 4, the condenser 5 fixedly connected to the rear side of the outer wall of the distillation column 3, and a conveying pipe 6 connected to both the condenser 5 and the right side of the outer wall of the distillation column 3, the right end of the outer wall of the conveying pipe 6 connected to a reflux tank 7, and an outlet pipe fixedly connected to the right side of the outer wall of the reflux tank 7. The bottom rear side of the feed pipe 8 and the discharge pipe 8 are fixedly connected to the connecting pipe 9. The bottom right side of the condenser 5 and the distillation column 3 are both fixedly connected to the conduit 10. The right side of the outer wall of the conduit 10 is equipped with a flow control system 11. The flow control system 11 is fixedly connected to the bottom of the outer wall of the connecting pipe 9. The middle of the inner wall of the support frame 1 is provided with a closing mechanism 2. The closing mechanism 2 is used to prevent backflow valves. The top of the outer wall of the fixed shell 204 is fixedly connected to the baffle 12. The four corners of the top of the baffle 12 are threaded with bolts 13.

[0032] Specifically, the methyl isobutyl ketone mixture is heated in the distillation column 3. The low-boiling-point components vaporize and rise, while the high-boiling-point impurities remain at the bottom of the column. The vapor at the top of the column contains the target product and a small amount of impurities. It is drawn to the condenser 5 by the reflux pump 4. The condenser 5 condenses the vapor through heat exchange. The liquid enters the reflux tank 7 through the delivery pipe 6. The reflux tank 7 stores the condensate and provides a system buffer. The flow control system 11 on the conduit 10 regulates the liquid reflux into the distillation column 3 to maintain a suitable reflux ratio to improve mass transfer efficiency. Part of the liquid in the reflux tank 7 is refluxed, and part is led out as product through the discharge pipe 8. The support frame 1 ensures stable operation of the equipment and works together to purify methyl isobutyl ketone through distillation. A closing mechanism 2 is provided in the middle of the inner wall of the support frame 1. The closing mechanism 2 is used to prevent backflow. It is fixedly connected to the baffle 12 at the top of the outer wall of the fixed shell 204 to ensure the stability of the structure. The four corners of the top of the baffle 12 are threadedly connected to bolts 13, which not only enhances the connection but also facilitates disassembly and maintenance when needed.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The closing mechanism 2 includes a connecting cylinder 201, which is located in the middle of the inner wall of the support frame 1. An adjustment handle 202 is rotatably connected to the right side of the outer wall of the connecting cylinder 201. A support tube 203 is fixedly connected to the top of the outer wall of the front connecting cylinder 201. A fixed shell 204 is fixedly connected to the adjacent side of the outer wall of the two adjustment handles 202. A spring 205 is fixedly connected to the front side of the inner wall of the fixed shell 204. A closing plug 206 is fixedly connected to the front side of the outer wall of the spring 205. A sealing plug 207 is fixedly connected to the rear side of the inner wall of the fixed shell 204. A fixing block 208 is fixedly connected to the rear side of the inner wall of the sealing plug 207. A connecting frame 209 is fixedly connected to the bottom of the outer wall of the fixed shell 204. A fixing frame 14 is fixedly connected to the top of the outer wall of the support frame 1. A ladder 15 is fixedly connected to the rear side of the outer wall of the support frame 1. A fixing ring 16 is fixedly connected to the middle of the outer wall of the conveying pipe 6. A handle 17 is rotatably connected to the top of the outer wall of the fixing ring 16.

[0034] Specifically, the connecting cylinder 201 is located in the middle of the inner wall of the support frame 1, providing rotational support for the adjusting handle 202. The adjusting handle 202 can change the position or state of the connected components, used to adjust components such as the fixed shell 204. The support tube 203 is fixed to the top of the outer wall of the connecting cylinder 201, supporting related equipment or enhancing stability. The spring 205 inside the fixed shell 204 is connected to the closing plug 206. The elastic potential energy of the spring 205 allows the closing plug 206 to reciprocate, achieving a function similar to a one-way valve. The sealing plug 207 ensures the internal sealing of the fixed shell 204. The fixing block 208 provides a point of force. The connecting frame 2 09 Connect the fixed shell 204 to other components to ensure working stability. The top of the outer wall of the support frame 1 is fixedly connected to the fixed frame 14, which can provide additional stability and support. At the same time, the rear side of the outer wall of the support frame 1 is fixedly connected to the ladder 15, which facilitates workers to perform high-altitude operations or maintenance. The middle of the outer wall of the conveying pipe 6 is fixedly connected to the fixed ring 16. This fixed ring 16 can not only ensure the stability of the conveying pipe 6, but also has a rotatable handle 17 connected to the top of its outer wall, which allows the operator to easily rotate or adjust, thereby improving work efficiency and ease of operation.

[0035] Reference Figure 1 , Figure 2 and Figure 3 An adjusting rod 18 is rotatably connected to the front side of the outer wall of the reflux pump 4. A cover plate 19 is fixedly connected to the bottom of the outer wall of the adjusting rod 18. A connecting sleeve 20 is fixedly connected to the bottom of the outer wall of the discharge pipe 8. A switch 21 is rotatably connected to the left side of the outer wall of the connecting sleeve 20. A discharge pipe 22 is connected to the rear side of the outer wall of the condenser 5. A valve 23 is installed on the top of the outer wall of the discharge pipe 22.

[0036] Specifically, the adjusting rod 18 rotating on the front side of the reflux pump 4 can change its angle by rotating, which drives the bottom fixed cover plate 19 to move. This is used to adjust the opening and closing degree of the reflux pump 4 in a specific area or to perform local flow control. The switch 21 rotating on the left side of the bottom connecting sleeve 20 of the discharge pipe 8 can control the opening and closing of the discharge pipe 8 and determine the timing of product output. The discharge pipe 22 connected to the rear side of the condenser 5 and the valve 23 installed on the top are used to control the discharge of waste and residual liquid generated in the condenser 5 to ensure the stable operation of the condenser 5.

[0037] Working Principle: The methyl isobutyl ketone mixture to be purified is heated in distillation column 3. The low-boiling-point components in the mixture vaporize first and move upwards in distillation column 3, while the high-boiling-point impurities remain at the bottom. The vapor rising to the top of the column contains the target product methyl isobutyl ketone and a small amount of impurities with similar boiling points. The reflux pump 4 at the top of the column extracts this part of the vapor. This is because relying solely on gravity, the vapor cannot efficiently enter the subsequent processing equipment. The reflux pump 4 provides power to ensure that the vapor can be stably and quickly delivered to the condenser 5. After the vapor enters the condenser 5, the condenser 5 removes the heat of the vapor through heat exchange with the outside, lowering its temperature. The gaseous methyl isobutyl ketone and some impurities are converted back into liquid. The condensed liquid in the condenser 5 and the liquid drawn from the side of distillation column 3 are separated to a certain extent within the column and are then transported together through the conveying pipe 6 to the reflux tank 7 to participate in the subsequent reflux and product conditioning processes. The reflux tank 7 serves as a temporary storage tank for the condensate, keeping the liquid in the system within a certain range. The system has buffer and adjustment space. Liquids drawn from the bottom of condenser 5 and the bottom right side of distillation column 3 are transported through conduits 10. A flow control system 11 is installed on conduit 10, which can precisely adjust the flow rate of liquid returning to distillation column 3. The flow control system 11 controls a portion of the liquid to flow back to distillation column 3 through connecting pipe 9 according to the preset ratio of reflux liquid to output liquid, realizing reflux operation. A suitable reflux ratio is crucial for the distillation process, ensuring sufficient contact between the gas and liquid phases in the column, improving mass transfer efficiency, and thus achieving efficient purification of methyl isobutyl ketone. The liquid in reflux tank 7 is returned to distillation column 3 after being controlled by the flow control system 11, while the other part is used as product and drawn out through discharge pipe 8. The connecting pipe 9 connected to the bottom rear side of discharge pipe 8 is used to guide the liquid that needs to be refluxed back to distillation column 3 on the one hand, and to ensure that the pressure and liquid flow in the entire system remain stable during product extraction, ensuring stable operation of the equipment. All components work together to achieve the distillation purification of methyl isobutyl ketone.

[0038] The connecting cylinder 201 is located in the middle of the inner wall of the support frame 1, providing a rotational support point for the adjustment handle 202. The adjustment handle 202 can rotate around the connecting cylinder 201. By rotating the adjustment handle 202, the position and state of the connected components can be changed, which is used to adjust the angle and height of related components such as the fixed shell 204 or to operate other components. The support tube 203 is fixed to the top of the outer wall of the front connecting cylinder 201, which is used to support other related equipment and components. As an auxiliary structure, it enhances the stability of the connection between the connecting cylinder 201 and other components. One end of the spring 205 inside the fixed shell 204 is fixed to the front side of the inner wall of the fixed shell 204, and the other end is connected to the closing plug 206. The spring 205 has elastic potential energy. When it is subjected to external force, it will deform and return to its original shape after the external force is removed. Utilizing the elasticity of the spring 205, the closing plug 206 can reciprocate within the fixed shell 204. When external material needs to pass through the opening on the fixed shell 204 corresponding to the closing plug 206, the external force pushes the closing plug 206. The compression spring 205 opens the opening; when the external force disappears, the spring 205 pushes the closing plug 206 to reset and close the opening, acting as a one-way valve or seal to prevent backflow of substances or entry of external impurities. The sealing plug 207 is fixed to the rear side of the inner wall of the fixed shell 204. Its main function is to ensure the sealing of the interior of the fixed shell 204 and prevent leakage of internal substances or entry of external air and impurities. The fixing block 208 is connected to the rear side of the inner wall of the sealing plug 207 for further fixing or connecting other related components. As a force-bearing point, it provides a stable force point when the sealing plug 207 or the entire fixed shell 204 needs to be operated. The connecting bracket 209 is fixed to the bottom of the outer wall of the fixed shell 204. It can connect the fixed shell 204 with other components, playing the role of transmitting force or fixing position, so that the fixed shell 204 can work in coordination with other parts of the entire reflux device, and connect the fixed shell 204 to the support frame 1 or other equipment to ensure its stability during operation.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reflux purifier for distillation and purification of methyl isobutyl ketone, comprising a support frame (1), characterized in that: A distillation column (3) is fixedly connected to the middle of the top wall of the support frame (1). A reflux pump (4) is fixedly connected to the top of the outer wall of the distillation column (3). The other end of the reflux pump (4) is connected to a condenser (5). The condenser (5) is fixedly connected to the rear side of the outer wall of the distillation column (3). Both the condenser (5) and the right side of the outer wall of the distillation column (3) are connected to a delivery pipe (6). The right end of the outer wall of the delivery pipe (6) is connected to a reflux tank (7). The right side of the outer wall of the reflux tank (7) is fixedly connected to the reflux tank (7). A discharge pipe (8) is connected, and a connecting pipe (9) is fixedly connected to the bottom rear side of the discharge pipe (8). A conduit (10) is fixedly connected to the bottom right side of both the condenser (5) and the distillation column (3). A flow control system (11) is installed on the right side of the outer wall of the conduit (10). The flow control system (11) is fixedly connected to the bottom of the outer wall of the connecting pipe (9). A closing mechanism (2) is provided in the middle of the inner wall of the support frame (1). The closing mechanism (2) is used to prevent backflow valves.

2. The reflux purifier for distillation and purification of methyl isobutyl ketone according to claim 1, characterized in that: The closing mechanism (2) includes a connecting cylinder (201), which is located in the middle of the inner wall of the support frame (1). An adjustment handle (202) is rotatably connected to the right side of the outer wall of the connecting cylinder (201). A support tube (203) is fixedly connected to the top of the outer wall of the front connecting cylinder (201). A fixed shell (204) is fixedly connected to the adjacent side of the outer wall of the two adjustment handles (202). A spring (205) is fixedly connected to the front side of the inner wall of the fixed shell (204). A closing plug (206) is fixedly connected to the front side of the outer wall of the spring (205). A sealing plug (207) is fixedly connected to the rear side of the inner wall of the fixed shell (204). A fixing block (208) is fixedly connected to the rear side of the inner wall of the sealing plug (207). A connecting frame (209) is fixedly connected to the bottom of the outer wall of the fixed shell (204).

3. The reflux purifier for distillation and purification of methyl isobutyl ketone according to claim 2, characterized in that: A baffle (12) is fixedly connected to the top of the outer wall of the fixed shell (204), and bolts (13) are threadedly connected to the four corners of the top of the baffle (12).

4. The reflux purifier for distillation and purification of methyl isobutyl ketone according to claim 1, characterized in that: A fixed frame (14) is fixedly connected to the top of the outer wall of the support frame (1), and a ladder (15) is fixedly connected to the rear side of the outer wall of the support frame (1).

5. The reflux purifier for distillation and purification of methyl isobutyl ketone according to claim 1, characterized in that: A fixing ring (16) is fixedly connected to the middle of the outer wall of the conveying pipe (6), and a handle (17) is rotatably connected to the top of the outer wall of the fixing ring (16).

6. The reflux purifier for distillation and purification of methyl isobutyl ketone according to claim 1, characterized in that: An adjusting rod (18) is rotatably connected to the front side of the outer wall of the reflux pump (4), and a cover plate (19) is fixedly connected to the bottom of the outer wall of the adjusting rod (18).

7. The reflux purifier for distillation and purification of methyl isobutyl ketone according to claim 1, characterized in that: A connecting sleeve (20) is fixedly connected to the bottom of the outer wall of the discharge pipe (8), and a switch (21) is rotatably connected to the left side of the outer wall of the connecting sleeve (20).

8. The reflux apparatus for distillation purification of methyl isobutyl ketone according to claim 1, characterized in that: The outer wall of the condenser (5) is connected to a discharge pipe (22), and a valve (23) is installed on the top of the outer wall of the discharge pipe (22).

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