High purity rectification column continuous apparatus and process for neopentyl glycol copolymer

Abstract

The application discloses a high-purity rectifying tower continuous device and process for neopentyl glycol copolymer, and relates to the technical field of neopentyl glycol copolymer purification. The high-purity rectifying tower continuous device and process for neopentyl glycol copolymer comprises a tower body, a discharge pipe fixed at the top of the tower body and contained in a basic unit, a condenser contained in the basic unit and sleeved outside the discharge pipe, and a heater fixed at the bottom of the tower body, wherein a tower plate is installed in the tower body, a weir is fixed at the top of the tower plate, a downcomer is fixed at the bottom of the tower plate, an adjusting assembly for adjusting the gas flow is arranged on the tower plate, and an auxiliary assembly for assisting the operation of the adjusting assembly is arranged on the tower plate, the adjusting assembly comprises a main electric push rod fixed at the top of the weir and used for driving the adjusting assembly to operate, one end of the main electric push rod is fixed with a support plate, the support plate avoids the occurrence of gas bubble entrainment, and the support plate avoids the occurrence of the case that the overall rectification efficiency is reduced due to the reduction of temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of neopentyl glycol copolymer purification, in particular to a high-purity rectification tower continuous device and process for neopentyl glycol copolymer. BACKGROUND

[0002] In chemical production, in order to extract each component in the mixture, rectification tower is often used to purify some chemical products to a high degree. When using the rectification tower to purify neopentyl glycol as a raw material for producing neopentyl glycol copolymer, bubble entrainment phenomenon inevitably occurs. Currently, the frequency of bubble entrainment phenomenon is reduced by reducing the gas flow rate, that is, reducing the temperature of the heater. When the steam rising flow rate is too large to cause bubble entrainment phenomenon, if the temperature is reduced, the overall progress of the rectification operation will be inevitably affected, the rectification efficiency will be reduced, and liquid leakage phenomenon will easily occur due to the reduction of the gas flow rate, which affects the rectification effect and the purity of the product.

[0003] For example, the high-efficiency rectification tower disclosed in CN214105870U can clean the impurities in the tower body, but bubble entrainment phenomenon inevitably occurs, and liquid leakage and the influence on the rectification efficiency are easily caused by reducing the gas flow rate.

[0004] Therefore, a high-purity rectification tower continuous device and process for neopentyl glycol copolymer are proposed. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a high-purity rectification tower continuous device and process for neopentyl glycol copolymer, which solves the problem that when the steam rising flow rate is too large to cause bubble entrainment phenomenon, if the temperature is reduced, the overall progress of the rectification operation will be inevitably affected, the rectification efficiency will be reduced, and liquid leakage phenomenon will easily occur due to the reduction of the gas flow rate, which affects the rectification effect and the purity of the product.

[0006] To achieve the above purpose, the present application is implemented by the following technical scheme: a high-purity rectification tower continuous device for neopentyl glycol copolymer, comprising a tower body, an air outlet pipe fixed at the top of the tower body and contained in a basic unit, a condenser contained in the basic unit and sleeved outside the air outlet pipe, and a heater fixed at the bottom of the tower body, a tower plate is installed in the tower body, a weir is fixed at the top of the tower plate, a downcomer is fixed at the bottom of the tower plate, an adjusting assembly for adjusting the gas flow rate and an auxiliary assembly for assisting the operation of the adjusting assembly are arranged on the tower plate, the adjusting assembly comprises:

[0007] A main electric push rod is fixed at the top of the weir for driving the adjusting assembly to operate, one end of the main electric push rod is fixed with a support plate, a spring one is fixed in the support plate, and the other end of the spring one is fixed with a push block;

[0008] A baffle, slidably mounted on the tower plate to provide support for the adjustment assembly, has a stop block fixed to its top and a guide rod fixed to one end.

[0009] Preferably, a second spring is fixed to one side of the guide rod, and the other end of the second spring is fixed inside the weir. An adjusting plate is slidably inserted inside the baffle, and a connecting plate is fixed to the adjusting plate.

[0010] Preferably, a spring three is fixed on the side wall of the adjusting plate, and a fixing plate is fixed to the other end of the spring three. The fixing plate is L-shaped and one end is fixed to the side wall of the baffle. A secondary electric push rod is fixed to the top of the baffle, and a connecting rod is fixed to one end of the secondary electric push rod.

[0011] Preferably, a sliding plate is fixed to one end of the connecting rod, one end of the sliding plate is inclined, and the side wall of the sliding plate abuts against the connecting plate.

[0012] Preferably, a spring four is fixed inside the weir, a positioning block is fixed to one end of the spring four, a sliding rod is fixed to the top of the positioning block, and one end of the sliding rod slides through the weir.

[0013] Preferably, the auxiliary component includes a fixing block, the top of which abuts against a floating ring, the top of which is fixed with a fixing rod, and the top of which is fixed with a baffle.

[0014] Preferably, a transmission rod is fixed on the side wall of the baffle, a positioning plate is fixed at one end of the transmission rod, a support frame is passed through one end of the positioning plate, a spring is fixed at the bottom of the positioning plate, the other end of the spring is fixed inside the support frame, and a displacement sensor is fixed at the top of the support frame.

[0015] Preferably, the basic unit also includes an inlet pipe and an outlet pipe fixed on the condenser, and a distribution pipe fixed outside the discharge pipe. A return pipe is connected to the distribution pipe, and one end of the return pipe is connected to the tower body. A holding tank and a raw material tank are also connected to the tower body. The bottom of the holding tank and the raw material tank are both connected to a fixed frame, and a control console is provided on the side of the fixed frame.

[0016] This invention also provides a distillation process suitable for a continuous high-purity distillation column for neopentyl glycol copolymers, comprising the following steps:

[0017] S1. Pre-treat the neopentyl glycol to be distilled, and add the pre-treated raw material into the column.

[0018] S2. The raw materials added to the tower are distilled by the cooperation of the tower body and the basic unit.

[0019] S3, detecting the backflow by the auxiliary assembly and providing the adjusting basis for the adjusting assembly;

[0020] S4, adjusting the gas flow through the tower plate by the adjusting assembly;

[0021] S5, collecting the rectified neopentyl glycol by the containing barrel included in the basic machine group.

[0022] Preferably, the heating temperature of the heater included in the basic machine group is between 210℃ and 230℃.

[0023] The application provides a high-purity rectification tower continuous device and process for neopentyl glycol copolymer.

[0024] (1) The high-purity rectification tower continuous device and process for neopentyl glycol copolymer, by setting the tower body, heater, discharge pipe, condenser, water inlet pipe, water outlet pipe, shunt pipe, discharge pipe, containing barrel, raw material barrel, fixing frame, reflux pipe, control panel, tower plate, weir, downcomer, by connecting the raw material barrel containing the neopentyl glycol copolymer to be purified to the tower body, then continuously pumping the neopentyl glycol copolymer to be purified into the tower body by the control panel, heating the neopentyl glycol copolymer to be purified pumped into the tower body by the heater to form an upward gas flow, then the vapor at the top of the tower enters the condenser through the discharge pipe, cooling water is transported into the condenser through the water inlet pipe, the cooling water with increased temperature after heat exchange is transported away through the water outlet pipe, and the material in the discharge pipe after condensation flows into the shunt pipe in liquid phase, part of the liquid phase flows back into the tower body through the reflux pipe to maintain the thermodynamic balance in the tower, and the other part of the liquid phase flows into the containing barrel through the discharge pipe for storage.

[0025] (2) The high-purity rectification tower continuous device and process for neopentyl glycol copolymer, by setting the main electric push rod, support plate, push block, spring one, stop block, baffle, guide rod, spring two, adjusting plate, connecting plate, spring three, fixed plate, auxiliary electric push rod, connecting rod, sliding plate, positioning block, sliding rod, spring four, the baffle drives the adjusting plate to move, so that the adjusting plate blocks the air hole on the tower plate, thereby reducing the speed of the air flowing through the air hole, thereby avoiding the occurrence of the gas bubble entrainment phenomenon, and at the same time, the auxiliary electric push rod can accurately shield the air hole where the gas bubble entrainment phenomenon occurs, further avoiding the situation that the overall rectification efficiency is reduced due to the reduction or elimination of the gas bubble entrainment phenomenon by reducing the temperature.

[0026] (3) The high-purity distillation tower equipment and process for the neopentyl glycol copolymer, by setting up a fixed block, floating ring, fixed rod, baffle, transmission rod, positioning plate, spring, support frame, and displacement sensor, when the liquid phase height in the diversion pipe reaches the reflux pipe, the excess part will directly flow back into the tower body. The displacement sensor measures the distance to the positioning plate, and the total amount of liquid phase flowing back into the tower plate is determined by the measured distance, thereby adaptively adjusting the operation mode of the regulating component. It can adjust the operation mode of the regulating component according to the amount of reflux flow, which is more energy-efficient and reduces the occurrence of bubble entrainment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is another structural view of the overall structure of the present invention;

[0029] Figure 3 This is a cross-sectional view of the tower body of the present invention;

[0030] Figure 4 This is a diagram showing the combined state of the regulating components of the present invention;

[0031] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 This is an exploded view of the regulating component of the present invention;

[0033] Figure 7 This is an exploded view of the push block of the present invention;

[0034] Figure 8 This is a structural diagram of the positioning block of the present invention;

[0035] Figure 9 For the present invention Figure 3 Enlarged view of point B in the middle;

[0036] Figure 10 This is a structural diagram of the auxiliary component of the present invention.

[0037] In the figure: 1, tower body; 11, gas outlet pipe; 12, condenser; 121, water inlet pipe; 122, water outlet pipe; 13, shunt pipe; 14, discharge pipe; 15, holding barrel; 16, raw material barrel; 17, fixed frame; 18, reflux pipe; 19, control console; 2, tower plate; 21, weir; 22, downcomer; 23, main electric push rod; 24, support plate; 25, push block; 26, spring one; 27, stop block; 28, baffle; 29, guide rod; 210, spring two; 211, adjusting plate; 3, connecting plate; 31, spring three; 32, fixed plate; 33, auxiliary electric push rod; 34, connecting rod; 35, sliding plate; 36, positioning block; 37, sliding rod; 38, spring four; 4, fixed block; 41, floating ring; 42, fixed rod; 43, baffle; 44, transmission rod; 45, positioning plate; 46, spring five; 47, support frame; 48, displacement sensor. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] Please refer to Figures 1 to 10 The present application provides the following technical solutions:

[0040] Embodiment one: a high-purity rectification tower continuous device for neopentyl glycol copolymer, comprising a tower body 1, a gas outlet pipe 11 fixedly installed at the top of the tower body 1 and contained in a basic unit, a condenser 12 fixedly installed outside the gas outlet pipe 11 and also contained in the basic unit, and a heater 101 fixedly installed at the bottom of the tower body 1, nine groups of tower plates 2 are detachably installed in the tower body 1, a weir 21 is fixedly installed at the top of each of the nine groups of tower plates 2, a downcomer 22 is fixedly installed at the bottom of each of the nine groups of tower plates 2, and air holes are formed in the tower plates 2;

[0041] The basic unit further comprises a water inlet pipe 121 and a water outlet pipe 122 fixedly installed on the condenser 12, and a shunt pipe 13 fixedly installed outside the gas outlet pipe 11, a reflux pipe 18 is communicated with the shunt pipe 13, one end of the reflux pipe 18 is communicated with the tower body 1, a raw material barrel 16 is further communicated with the tower body 1, the bottom of the shunt pipe 13 is communicated with a holding barrel 15 through a discharge pipe 14, the bottom of the holding barrel 15 and the raw material barrel 16 are placed on a fixed frame 17, and a control console 19 is arranged on the side of the fixed frame 17.

[0042] In use, the raw material tank 16 containing the neopentyl glycol copolymer to be purified is connected to the tower body 1, and then the neopentyl glycol copolymer to be purified is continuously pumped into the tower body 1 by the control console 19. The neopentyl glycol copolymer to be purified is heated by the heater 101 to form upward gas flow. The gas flow flows into the upper tower body 1 through the air holes in the tower plate 2. When passing through each tower plate 2, the gas flow contacts the liquid layer on the tower plate 2 through the air holes in the tower plate 2. The air holes allow the vapor to be uniformly distributed and pass through the liquid layer, and promote the mass transfer between the gas and the liquid, i.e. the heavy components in the vapor condense into the liquid phase, and the light components in the liquid phase evaporate into the vapor phase, achieving gradual separation of the components. The liquid level of the condensed liquid phase exceeds the height of the weir 21, and then flows from the top to the bottom of the tower through the downcomer 22 by gravity, and forms a flowing liquid layer on each plate surface. Then the vapor at the top of the tower enters the condenser 12 through the gas outlet pipe 11. Cooling water is supplied to the condenser 12 through the water inlet pipe 121, and the heated cooling water is discharged through the water outlet pipe 122. The material in the discharge pipe 14 after condensation flows into the liquid phase into the distribution pipe 13. Part of the liquid phase flows back into the tower body 1 through the reflux pipe 18 to maintain the thermodynamic balance in the tower, and the other part of the liquid phase flows into the storage tank 15 through the discharge pipe 14 for storage.

[0043] In example two, the technical solution is different from that of example one, and includes: the three groups of tower plates 2 closest to the top of the tower are each provided with an adjusting assembly for adjusting the gas flow. A single adjusting assembly includes: a main electric push rod 23, a support plate 24, a push block 25, a spring one 26, a stop block 27, a baffle 28, a guide rod 29, a spring two 210, an adjusting plate 211, a connecting plate 3, a spring three 31, a fixed plate 32, a secondary electric push rod 33, a connecting rod 34, a sliding plate 35, a positioning block 36, a sliding rod 37, and a spring four 38.

[0044] One end of the main electric push rod 23 is fixedly installed on the top of the weir 21 for driving the adjusting assembly to operate. The other end of the main electric push rod 23 is fixedly installed with a support plate 24. The support plate 24 is fixedly installed with a spring one 26. The other end of the spring one 26 is fixedly installed with a push block 25. The push block 25 is also inclined on both sides, so that the stop block 27 can extrude the push block 25 into the support plate 24.

[0045] The bottom of the baffle plate 28 is slidingly installed on the tower plate 2 for providing support for the adjusting assembly, the top of the baffle plate 28 is fixedly installed with a stop block 27, both ends of the stop block 27 are obliquely arranged, one end of the baffle plate 28 is fixedly installed with a guide rod 29, one side of the guide rod 29 is fixedly installed with a spring 210, the other end of the spring 210 is fixedly installed in the weir 21, four adjusting plates 211 are slidingly arranged in the baffle plate 28, two adjacent adjusting plates 211 are fixedly connected through a connecting plate 3, a spring 31 is fixedly installed on the side wall of the adjusting plate 211, the other end of the spring 31 is fixedly installed with a fixed plate 32, the fixed plate 32 is L-shaped and one end is fixedly installed on the side wall of the baffle plate 28, the top of the baffle plate 28 is fixedly installed with a secondary electric push rod 33, one end of the secondary electric push rod 33 is fixedly installed with a connecting rod 34, one end of the connecting rod 34 is fixedly installed with a sliding plate 35, one end of the sliding plate 35 is obliquely arranged, the side wall of the sliding plate 35 abuts against the connecting plate 3, a spring 38 is fixedly installed in the weir 21, one end of the spring 38 is fixedly installed with a positioning block 36, the top of the positioning block 36 is fixedly installed with a sliding rod 37, one end of the sliding rod 37 slidingly penetrates the weir 21.

[0046] In use, when the steam rising flow rate is too large, the main electric push rod 23 is started through the control of the console 19, the support plate 24 is moved through the main electric push rod 23, the push block 25 is moved through the support plate 24, the stop block 27 is moved through the push block 25, the baffle plate 28 is moved through the stop block 27, the guide rod 29 is moved through the baffle plate 28, the guide rod 29 is limited and guided to the baffle plate 28 through the sliding cooperation between the guide rod 29 and the weir 21, the baffle plate 28 only moves linearly in the moving process, the adjusting plate 211 is moved through the baffle plate 28, the air vent on the tower plate 2 is blocked through the adjusting plate 211, so as to reduce the speed of the air after flowing through the air vent, so as to avoid the occurrence of the gas bubble entrainment phenomenon;

[0047] When more air holes are all entrained by bubbles, the main electric push rod 23 is controlled to continuously run, so that the main electric push rod 23 drives the baffle 28 to move a greater distance through the push block 25. When the baffle 28 closest to the side where the support plate 24 is located moves to the maximum distance, the stop block 27 will extrude the positioning block 36. The positioning block 36 is first retracted into the weir 21 through the sliding fit between the sliding rod 37 and the weir 21. The sliding rod 37 guides and limits the positioning block 36, so that the positioning block 36 is first retracted into the weir 21. When the stop block 27 moves to the other side of the positioning block 36, the positioning block 36 is ejected from the weir 21 under the action of the spring four 38, and the positioning block 36 is blocked. The stop block 27 can be kept in place, and the push block 25 is retracted into the support plate 24 under the extrusion of the stop block 27 at this time. The push block 25 is retracted into the support plate 24 until it passes through the stop block 27 and is ejected again under the action of the spring one 26. At this time, the main electric push rod 23 continues to run to drive the next group of stop blocks 27 to move. The process is repeated until the last group of stop blocks 27 moves to the maximum distance.

[0048] During the reset process, the push block 25 will first extrude the stop block 27, so that the stop block 27 extrudes the positioning block 36 and retracts into the weir 21. Then, under the action of the second spring 210, the positioning block 36 is reset to the initial state. The push block 25 continues to move and is retracted into the support plate 24 under the action of the stop block 27. Until it passes through the stop block 27 and is ejected again under the action of the spring one 26. The process is repeated until the push block 25 is reset to the initial state by the main electric push rod 23.

[0049] When the frequency of bubble entrainment phenomenon decreases or disappears, the main electric push rod 23 is controlled to reset to the initial state at the same time as the auxiliary electric push rod 33 is started. The auxiliary electric push rod 33 drives the connecting rod 34 to move, and the connecting rod 34 drives the sliding plate 35 to move. The sliding plate 35 drives the connecting plate 3 to move, and the connecting plate 3 drives the adjusting plate 211 to move. The adjusting plate 211 and the baffle 28 are slidably connected, so that the adjusting plate 211 only moves linearly during movement. The adjusting plate 211 extends from the baffle 28 to block part of the air holes on the tower plate 2, reduces the flow rate of air in part of the air holes, and accurately adjusts the air holes where the bubble entrainment phenomenon occurs. The connecting plate 3 fixes two adjacent adjusting plates 211, and the sliding plate 35 abuts against the connecting plate 3, so that the adjusting plate 211 remains in the state of blocking the air holes. By continuing to control the auxiliary electric push rod 33 to run, the sliding plate 37 moves farther away from the side where the main electric push rod 23 is located. One side of the sliding plate 35 abuts against the previous connecting plate 3 and the next adjusting plate 211, so that the next adjusting plate 211 also extends from the baffle 28 to block part of the air holes on the tower plate 2, reduce the flow rate of air in part of the air holes, and accurately adjust the air holes where the bubble entrainment phenomenon occurs.

[0050] In the embodiment, the auxiliary adjusting assembly comprises a fixed block 4, a floating ring 41, a fixed rod 42, a baffle 43, a transmission rod 44, a positioning plate 45, a spring 46, a support frame 47, and a displacement sensor 48.

[0051] One end of the fixed block 4 is fixedly installed on the inner wall of the shunt pipe 13, and the top of the fixed block 4 abuts against the floating ring 41. The top of the floating ring 41 is fixedly installed with the fixed rod 42. The top of the fixed rod 42 is fixedly installed with the baffle 43. The sidewall of the baffle 43 is fixedly installed with the transmission rod 44. One end of the transmission rod 44 is slidably arranged in the return pipe 18. The connection between the transmission rod 44 and the return pipe 18 is sealed. One end of the transmission rod 44 is fixedly installed with the positioning plate 45. One end of the positioning plate 45 is slidably arranged in the support frame 47. The bottom of the positioning plate 45 is fixedly installed with the spring 46. The other end of the spring 46 is fixedly installed in the support frame 47. The top of the support frame 47 is fixedly installed with the displacement sensor 48.

[0052] In use, when the liquid level in the shunt pipe 13 reaches the return pipe 18, the excess part will directly flow back into the column body 1.

[0053] When the return flow is small, the liquid level of the tower plate 2 of the adjusting assembly is slightly increased, the frequency of the bubble entrainment phenomenon is low, the adjusting assembly does not need to be adjusted in batches, and only the fine adjustment function needs to be enabled.

[0054] When the return flow is large, the liquid phase in the shunt pipe 13 provides a large buoyancy to the floating ring 41, so that the floating ring 41 moves upward. The upward movement of the floating ring 41 changes according to the change of the liquid level of the liquid phase in the shunt pipe 13. The floating ring 41 moves the fixed rod 42 synchronously. The fixed rod 42 moves the baffle 28. The baffle 28 moves the transmission rod 44. The transmission rod 44 moves the positioning plate 45. The positioning plate 45 only moves linearly through the sliding cooperation between the positioning plate 45 and the support frame 47. When the positioning plate 45 loses power, it is reset to the initial state under the action of the spring 46.

[0055] The distance from the positioning plate 45 is measured by the displacement sensor 48. The total amount of the liquid phase flowing back into the tower plate 2 is determined according to the measured distance, so that the operation mode of the adjusting assembly is adaptively adjusted.

[0056] The embodiment of the application also provides a distillation process suitable for the high-purity rectifying tower for the neopentyl glycol copolymer, which comprises the following steps:

[0057] S1, pretreating the neopentyl glycol to be distilled, and adding the pretreated raw material into the column body 1.

[0058] S2, rectifying the raw material added into the tower body 1 through the tower body 1 and the basic set;

[0059] S3, detecting the backflow through the auxiliary set and providing the adjusting basis for the adjusting set;

[0060] S4, adjusting the gas flow through the tower plate 2 through the adjusting set;

[0061] S5, collecting the rectified neopentyl glycol through the containing barrel 15 included in the basic set.

[0062] The heating temperature of the heater 101 is between 210-230℃.

[0063] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by the person skilled in the art.

[0064] It should be noted that, in this text, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0065] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-purity rectification column continuous device for neopentyl glycol copolymer, comprising a column body (1), an outlet pipe (11) fixed at the top of the column body (1) and contained in a base unit, a condenser (12) also contained in the base unit and sleeved outside the outlet pipe (11), and a heater (101) fixed at the bottom of the column body (1), characterized in that: The tower body (1) is provided with a tower plate (2), the top of the tower plate (2) is fixedly provided with a weir (21), the bottom of the tower plate (2) is fixedly provided with a downcomer (22), the tower plate (2) is provided with an adjusting assembly for adjusting the air flow and an auxiliary assembly for assisting the operation of the adjusting assembly, and the adjusting assembly comprises: A main electric push rod (23) is fixedly arranged at the top of the weir (21) and used for driving the adjusting assembly to operate, one end of the main electric push rod (23) is fixedly provided with a supporting plate (24), the supporting plate (24) is fixedly provided with a spring (26), and the other end of the spring (26) is fixedly provided with a push block (25). A baffle (28) is slidably arranged on the tower plate (2) and used for supporting the adjusting assembly, the top of the baffle (28) is fixedly provided with a stop block (27), and one end of the baffle (28) is fixedly provided with a guide rod (29). An adjusting plate (211) is slidably arranged in the baffle (28) and used for partially or completely shielding the air hole on the tower plate (2), and the adjusting plate (211) is fixedly provided with a connecting plate (3). The auxiliary assembly comprises: A floating ring (41) is arranged in the shunt pipe (13) through a fixing block (4) and moves up and down with the change of the liquid level. A displacement sensor (48) is used for detecting the displacement of the floating ring (41) and feeding back to a control console (19), the control console (19) controls the operation of the main electric push rod (23) and / or the auxiliary electric push rod (33) according to the feedback signal of the displacement sensor (48) to adjust the opening area of the air hole.

2. The high purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 1, characterized by: One side of the guide rod (29) is fixedly provided with a spring (210), and the other end of the spring (210) is fixedly arranged in the weir (21).

3. The high purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 2, characterized by: A spring (31) is fixedly arranged on the side wall of the adjusting plate (211), the other end of the spring (31) is fixedly provided with a fixing plate (32), the fixing plate (32) is arranged in an L shape and one end of the fixing plate (32) is fixedly arranged on the side wall of the baffle (28), the top of the baffle (28) is fixedly provided with an auxiliary electric push rod (33), and one end of the auxiliary electric push rod (33) is fixedly provided with a connecting rod (34).

4. The high purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 3, characterized by: One end of the connecting rod (34) is fixedly provided with a sliding plate (35), one end of the sliding plate (35) is arranged in an inclined manner, and the side wall of the sliding plate (35) abuts against the connecting plate (3).

5. The high purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 1, characterized by: The weir (21) is fixedly provided with a spring (38), one end of the spring (38) is fixedly provided with a positioning block (36), the top of the positioning block (36) is fixedly provided with a sliding rod (37), and one end of the sliding rod (37) is slidably arranged in the weir (21).

6. The high purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 1, characterized by: The auxiliary assembly comprises the fixing block (4), the top of the floating ring (41) is fixedly provided with a fixing rod (42), and the top of the fixing rod (42) is fixedly provided with a baffle (43).

7. The high purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 6, characterized by: The side wall of the baffle (43) is fixed with a transmission rod (44), one end of the transmission rod (44) is fixed with a positioning plate (45), one end of the positioning plate (45) is provided with a support frame (47), the bottom of the positioning plate (45) is fixed with a spring five (46), the other end of the spring five (46) is fixed in the support frame (47), the top of the support frame (47) is fixed with a displacement sensor (48).

8. The high purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 1, characterized by: The base unit further comprises a water inlet pipe (121) and a water outlet pipe (122) fixed on the condenser (12), a shunt pipe (13) fixed outside the air outlet pipe (11), a reflux pipe (18) communicated with the shunt pipe (13), one end of the reflux pipe (18) is communicated with the tower body (1), the tower body (1) is further communicated with a raw material barrel (16), the bottom of the shunt pipe (13) is communicated with a containing barrel (15) through a discharge pipe (14), the bottom of the containing barrel (15) and the raw material barrel (16) is connected with a fixed frame (17), the control console (19) is arranged on the side of the fixed frame (17).

9. Distillation process suitable for the high-purity rectification column continuous apparatus for neopentyl glycol copolymers according to any one of claims 1-8, characterized by, The method comprises the following steps: S1, pretreating the neopentyl glycol to be rectified, and adding the pretreated raw material into the tower body (1); S2, rectifying the raw material added into the tower body (1) by the tower body (1) and the base unit; S3, detecting the reflux amount by the auxiliary assembly and providing the adjustment basis for the adjustment assembly; S4, adjusting the gas flow through the tower plate (2) by the adjustment assembly; S5, collecting the rectified neopentyl glycol by the containing barrel (15) included in the base unit.

10. The rectification process of the high-purity rectification column continuous apparatus for neopentyl glycol copolymer according to claim 9, characterized by: The heating temperature of the heater (101) included in the base unit is between 210℃-230℃.

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