An esterification kettle for processing dioctyl terephthalate

Abstract

The utility model relates to the technical field of dioctyl terephthalate processing, in particular to an esterification kettle for dioctyl terephthalate processing, comprising a kettle body and a kettle cover: the upper end of the kettle body is provided with the kettle cover, the upper end side of the kettle cover is provided with a feed hopper, a pressurizing mechanism is provided inside the kettle cover, and a stirring mechanism is provided inside the kettle body; when the device is in use, the material can be stirred by the up and down movement of a piston rod at the lower end, and the pressure in the kettle body is increased when the piston rod is located at the upper end and then moves downward, so that the hotter gas in the upper layer moves downward under the push of the piston rod, and the gas in the kettle body flows out from the air exchange port along the gap between the kettle body and the piston rod, thereby avoiding the outflow of hot gas at the upper end of the device, and then effectively increasing the heat loss in the exhaust process.

Description

Technical Field

[0001] This utility model relates to the field of dioctyl terephthalate processing technology, and in particular to an esterification reactor for processing dioctyl terephthalate. Background Technology

[0002] The production of dioctyl terephthalate requires an esterification reaction in an esterification reactor. This reaction necessitates heating and the addition of a catalyst to accelerate the process. However, in typical esterification reactors, ventilation is required during heating to prevent excessive pressure buildup. During ventilation, the hot gas rises, and since ventilation is usually performed at the top, heat loss can easily occur, hindering the esterification reaction. Utility Model Content

[0003] The purpose of this invention is to provide an esterification reactor for processing dioctyl terephthalate, so as to solve the problems mentioned in the background art.

[0004] An esterification reactor for processing dioctyl terephthalate includes a reactor body and a reactor lid: the reactor body is provided with a reactor lid at its upper end, a feed hopper is provided on the upper side of the reactor lid, a pressurization mechanism is provided inside the reactor lid, and a stirring mechanism is provided inside the reactor body.

[0005] Preferably, the vessel body is cylindrical in shape, the lower end of the vessel body is hemispherical, and the upper end of the vessel body is provided with a lid.

[0006] When the device is in use, the lid is placed over the vessel body and then the two are secured with bolts. The discharge port is located at the bottom of the vessel body, through which the processed material can be taken out, while the feed hopper at the top can be used for feeding.

[0007] Preferably, the pressurization mechanism includes an electric push rod and a piston rod, the electric push rod being disposed at the upper end of the vessel lid, and the piston rod being disposed at the lower end of the electric push rod.

[0008] When the device is in use, the height of the piston rod is controlled by an electric push rod, thereby controlling the air pressure inside the vessel. When the piston rod is at its highest point, it does not affect the feeding of material into the feed hopper.

[0009] Preferably, a control rod is provided at the center of the lower end of the piston rod, the upper end of the control rod is twisted, and the lower end of the control rod is flat.

[0010] When the device is in use, the control lever drives the stirring mechanism to rotate. The lower end of the control lever is flat, meaning that the stirring mechanism can only be driven to rotate when the control lever is close to it. When the control lever and the stirring mechanism are far apart, the control lever will not be able to drive the fixed shaft to rotate.

[0011] Preferably, the stirring mechanism includes a fixed frame, a fixed shaft, and a stirring rod. Two fixed frames are provided inside the vessel body, and a fixed shaft is rotatably arranged at the center of the two fixed frames. A stirring rod is provided on the side of the fixed shaft.

[0012] When the fixed shaft and stirring rod rotate, the material is stirred, which facilitates the esterification reaction.

[0013] Preferably, the interior of the fixed shaft is funnel-shaped, and a guide hole is provided at the uppermost end of the fixed shaft.

[0014] When the twisted end of the control rod passes through the guide hole, it can drive the fixed shaft to rotate. When the diameter of the flat end of the control rod is smaller than that of the twisted end, the flat end of the control rod only has a positioning function and will not drive the fixed shaft to rotate.

[0015] During the reaction, the piston rod and control rod move up and down continuously to stir the material. When the control rod moves upward, the gas pressure inside the device decreases due to the increased space, and the vent will not open. At the same time, the fixed shaft and stirring rod will lose power and stop rotating. When the piston rod moves downward, the vent will open, and the upper gas will move downward under the pushing action of the piston rod. At the same time, the piston rod will guide the gas, causing the gas adhering to the inner wall of the vessel to flow upward, thereby preventing the hot gas from flowing out to the outside.

[0016] Preferably, the side of the vessel body is provided with a vent, the internal opening of the vent is engaged with a blocking ball, and a fixing spring is provided inside the vent, the fixing spring and the blocking ball being in contact.

[0017] When the device is in use, the retaining spring supports the blocking ball, so that the vent will only open for ventilation when the gas pressure inside the vessel is high.

[0018] The beneficial effects of this utility model are:

[0019] 1. When the device is in use, the material is stirred by moving the piston rod up and down at the lower end. When the piston rod is at the upper end and moves down, it increases the pressure inside the vessel. This causes the hotter gas in the upper layer to move downward under the push of the piston rod. The gas inside the vessel will flow out through the vent along the gap between the vessel and the piston rod, thus preventing the hot gas in the upper part of the device from flowing out and effectively increasing the heat loss during the exhaust process. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the vessel body of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the ventilation port of this utility model;

[0024] Figure 4 A schematic diagram showing the control lever positioned at the upper twisted end without contacting the guide hole;

[0025] Figure 5 This is a schematic diagram showing the control lever in contact with the guide hole at its lower twisted end.

[0026] In the diagram: 1. Kettle body; 2. Kettle lid; 3. Feed hopper; 4. Electric push rod; 5. Piston rod; 6. Control rod; 7. Fixing frame; 8. Fixing shaft; 9. Stirring rod; 10. Air vent; 11. Fixing spring; 12. Blocking ball. Detailed Implementation

[0027] 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.

[0028] In practical implementation: such as Figure 1-5 As shown, an esterification reactor for processing dioctyl terephthalate includes a reactor body 1 and a reactor cover 2: the reactor cover 2 is provided at the upper end of the reactor body 1, a feed hopper 3 is provided on the upper side of the reactor cover 2, a pressurizing mechanism is provided inside the reactor cover 2, and a stirring mechanism is provided inside the reactor body 1.

[0029] The vessel body 1 is cylindrical in shape, with a hemispherical lower end and a lid 2 at the upper end.

[0030] When the device is in use, the lid 2 is placed on the body 1 and then the two are fixed together with bolts. The bottom of the body 1 is provided with a discharge port through which the processed material can be taken out, and the upper feed hopper 3 can be used for feeding.

[0031] The pressurization mechanism includes an electric push rod 4 and a piston rod 5. The electric push rod 4 is located at the upper end of the vessel cover 2, and the piston rod 5 is located at the lower end of the electric push rod 4.

[0032] When the device is in use, the height of the piston rod 5 is controlled by the electric push rod 4, thereby controlling the air pressure inside the vessel 1. When the piston rod 5 is at the top, it does not affect the feeding of material into the feed hopper 3.

[0033] A control rod 6 is provided at the center of the lower end of the piston rod 5. The upper end of the control rod 6 is twisted, and the lower end of the control rod 6 is flat.

[0034] When the device is in use, the control lever 6 drives the stirring mechanism to rotate. The lower end of the control lever 6 is flat, meaning that the stirring mechanism can only be driven to rotate when the control lever 6 is close to the stirring mechanism. When the control lever 6 is far away from the stirring mechanism, the control lever 6 will not be able to drive the fixed shaft 8 to rotate.

[0035] The stirring mechanism includes a fixed frame 7, a fixed shaft 8, and a stirring rod 9. Two fixed frames 7 are provided inside the vessel body 1, and the fixed shaft 8 is rotatably arranged at the center of the two fixed frames 7. The stirring rod 9 is arranged on the side of the fixed shaft 8.

[0036] When the fixed shaft 8 and the stirring rod 9 rotate, the material is stirred, which facilitates the esterification reaction.

[0037] The interior of the fixed shaft 8 is funnel-shaped, and a guide hole is provided at the uppermost end of the fixed shaft 8.

[0038] When the twisted end of the control rod 6 passes through the guide hole, it can drive the fixed shaft 8 to rotate. When the diameter of the flat end of the control rod 6 is smaller than that of the twisted end of the control rod 6, the flat end of the control rod 6 only has a positioning function and will not drive the fixed shaft 8 to rotate.

[0039] During the reaction, the piston rod 5 and the control rod 6 move up and down continuously to stir the material. When the control rod 6 moves upward, the air pressure inside the device decreases due to the increased space, and the vent 10 will not open. At the same time, the fixed shaft 8 and the stirring rod 9 will lose power and stop rotating. When the piston rod 5 moves downward, the vent 10 will open, and the upper gas will move downward under the pushing action of the piston rod 5. At the same time, the piston rod 5 will guide the gas, causing the gas adhering to the inner wall of the vessel 1 to flow upward, thereby preventing the hot gas from flowing out to the outside.

[0040] A vent 10 is provided on the side of the vessel body 1. A plugging ball 12 is engaged with the internal opening of the vent 10. A fixing spring 11 is provided inside the vent 10. The fixing spring 11 and the plugging ball 12 are in contact.

[0041] When the device is in use, the fixed spring 11 supports the blocking ball 12, so that the vent 10 will only open for ventilation when the gas pressure inside the vessel 1 is high.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An esterification kettle for processing dioctyl terephthalate, characterized in that: The kettle comprises a kettle body (1) and a kettle cover (2): the kettle body (1) is provided with a kettle cover (2) at the upper end, a feeding hopper (3) is provided on the upper side of the kettle cover (2), a pressurizing mechanism is provided inside the kettle cover (2), and a stirring mechanism is provided inside the kettle body (1); The boosting mechanism comprises an electric push rod (4) and a piston rod (5); the electric push rod (4) is arranged at the upper end of the kettle cover (2); and the piston rod (5) is arranged at the lower end of the electric push rod (4).

2. The esterification kettle for processing dioctyl terephthalate according to claim 1, characterized in that: The kettle body (1) is cylindrical in shape as a whole, the lower end of the kettle body (1) is hemispherical, and the upper end of the kettle body (1) is provided with a kettle cover (2).

3. The esterification kettle for processing dioctyl terephthalate according to claim 1, characterized in that: A control rod (6) is provided at the center of the lower end of the piston rod (5); the upper end of the control rod (6) is in a twisted shape, and the lower end of the control rod (6) is in a flat shape.

4. The esterification kettle for processing dioctyl terephthalate according to claim 1, characterized in that: The stirring mechanism comprises a fixed frame (7), a fixed shaft (8) and a stirring rod (9); two fixed frames (7) are arranged inside the kettle body (1); fixed shafts (8) are rotatably arranged at the centers of the two fixed frames (7); and stirring rods (9) are arranged on the sides of the fixed shafts (8).

5. The esterification kettle for processing dioctyl terephthalate according to claim 4, characterized in that: The interior of the fixed shaft (8) is funnel-shaped, and a guide hole is provided at the uppermost end of the fixed shaft (8).

6. The esterification kettle for processing dioctyl terephthalate according to claim 1, characterized in that: A ventilation port (10) is provided on the side of the kettle body (1), a blocking ball (12) is snap-connected to the internal opening of the ventilation port (10), a fixing spring (11) is provided inside the ventilation port (10), and the fixing spring (11) and the blocking ball (12) are fitted together.

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