Molecular distillation separation device for resin production

Abstract

The utility model relates to the technical field of chemical processing equipment, in particular to a molecular distillation separation device for resin production, which comprises a rack, a molecular distiller, a connection switching pipe, at least two main collection bottles, a supply device and a condenser, the molecular distiller is mounted on the rack; a feeding hole is formed in the upper part of the molecular distiller, a condensation outlet and at least one collection outlet are formed in the lower part of the molecular distiller, and the connection switching pipe is connected to the collection outlet and is provided with at least two discharge holes which can be freely switched; the two main collecting bottles are detachably connected to the corresponding discharge ports; the feeding device is communicated with the feeding hole; the condenser is installed on the rack and connected to the condensation outlet. The condenser is provided with two condensation collecting bottles which can be freely switched. According to the molecular distillation separation device for resin production, different collection containers can be freely switched, and the influence of liquid drainage of the collection containers on a distillation system is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical processing equipment technology, specifically to a molecular distillation separation device for resin production. Background Technology

[0002] Molecular distillation is used in resin synthesis. It is a distillation method operated under high vacuum, a continuous distillation process involving non-equilibrium separation under high vacuum conditions. It is a separation process primarily based on gas diffusion of gas molecules escaping from the liquid phase. The molecular distillation process can be briefly summarized as follows: the material to be distilled is continuously injected into a high-speed rotating disk. Under centrifugal force, the material is distributed onto the inner surface of the distillation unit, which is then uniformly and continuously heated by a heat medium.

[0003] For example, patent CN218529826U discloses a high-efficiency molecular still for deep processing of aquatic oils. This still is configured with a main evaporator, a scraped film motor, a scraped film rotor, a heater, a feed pipe, a pre-filter, and a filter element. The main evaporator stores the aquatic oils, the heater heats the oils within it, the scraped film motor drives the scraped film rotor to scrape the oils, the feed pipe feeds the oils during operation, and the pre-filter and filter element pre-filter the oils entering the still, preventing impurities and fat particles from clogging the still. While the patent includes a drain valve at the bottom of the main collection bottle to avoid disassembling it, this valve can cause a rapid drop in pressure within the entire distillation system during the draining process, affecting the distillation effect and quality. Furthermore, the rectifier's discharge end is separately connected to a main collection bottle. Although it is also opened and closed via a solenoid valve, in actual use, disassembling and assembling the main collection bottle is relatively cumbersome. During this process, the main evaporator continues to evaporate. If the solenoid valve is closed, the distillation product in the main evaporator cannot condense quickly, leading to increased internal pressure and affecting product production. Therefore, there is an urgent need for a distillation separation system that can effectively reduce the impact on the distillation system during discharge to solve the above problems. Utility Model Content

[0004] In order to overcome one of the shortcomings of the prior art, the purpose of this utility model is to provide a molecular distillation separation device for resin production. This molecular distillation separation device for resin production can freely switch between different collection containers, reducing the impact of liquid discharge from the collection containers on the distillation system.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A molecular distillation separation apparatus for resin production includes a frame, a molecular distillation apparatus, a connecting switching pipe, at least two main collection flasks, a supply device, and a condenser. The molecular distillation apparatus is mounted on the frame. The upper part of the molecular distillation apparatus has a feed inlet, and the lower part has a condensation outlet and at least one collection outlet. The connecting switching pipe is connected to the collection outlet and has at least two freely switchable discharge outlets. Two main collection flasks are detachably connected to their corresponding discharge outlets. The supply device communicates with the feed inlet. The condenser is mounted on the frame and connected to the condensation outlet. The condenser has two freely switchable condensation collection flasks.

[0007] Furthermore, the condenser outlet is connected to a connecting pipe, which is inclined upwards, and the condenser is connected to the outlet of the connecting pipe.

[0008] Furthermore, the condenser is connected to a recovery pipe, which is connected to a supply device.

[0009] Furthermore, there are two condensers, and the upper parts of the two condensers are connected. The upper end of each condenser is connected to a pressure relief valve. Each condenser is connected to the connecting pipe, and the condenser not connected to the connecting pipe is connected to the recovery pipe.

[0010] Furthermore, the connecting switching pipe is T-shaped, the vertical pipe of the connecting switching pipe is connected to the collection outlet, both ends of the horizontal pipe of the connecting switching pipe are provided with connectors, the discharge port is located inside the connector, a switching valve is provided at the connection between the vertical pipe and the horizontal pipe of the connecting switching pipe, and the main collection bottle is detachably installed on the connector.

[0011] Furthermore, the vertical or horizontal tubes on the connecting switching tube are provided with mounting heads, which are connected to the frame.

[0012] Furthermore, all of the main collection bottles and condensate collection bottles are connected to the supply device via pressure relief return pipes.

[0013] Furthermore, the supply device includes a storage tank, a supply pump, and a buffer. The storage tank is connected to the inlet via a supply pipe. The supply pump is installed on the supply pipe. The buffer is installed on the supply pipe between the supply pump and the inlet. The pressure relief return pipe is connected to the buffer.

[0014] Furthermore, the storage tank, supply pump, and buffer are all mounted on the rack.

[0015] Furthermore, the bottom of the frame is equipped with casters.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention relates to a molecular distillation separation device for resin production. Based on an existing molecular distillation apparatus, it incorporates a connecting switching pipe. Multiple freely switchable outlets on this pipe connect to main collection bottles, allowing different main collection bottles to be independently connected to the molecular distillation apparatus. This avoids the impact on the gas pressure within the molecular distillation apparatus caused by operators handling main collection bottles filled with solution, and also prevents disruption of the condensation pressure within the condenser. Furthermore, the condenser features two freely switchable condensation collection bottles. This design also prevents operators from affecting the entire distillation system when handling condensation collection bottles filled with condensate, ensuring stable distillation.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 This is a structural connection diagram of another embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the connecting switching tube in an embodiment of this utility model.

[0022] Explanation of icon numbers:

[0023] Frame 10, Casters 11, Support Ring 12, Molecular Distiller 20, Feed Inlet 21, Condensate Outlet 22, Collection Outlet 23, Connecting Pipe 24, Recovery Pipe 25, Connecting Switching Pipe 30, Discharge Outlet 31, Connector 32, Switching Valve 33, Mounting Head 34, Main Collection Bottle 40, Supply Device 50, Storage Tank 51, Supply Pump 52, Buffer 53, Supply Pipe 54, Condenser 60, Condensate Collection Bottle 61, Pressure Relief Valve 62, Pressure Relief Return Pipe 70 Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] Reference Figures 1 to 3A molecular distillation separation apparatus for resin production is shown, comprising a frame 10, a molecular distillation apparatus 20, a connecting switching pipe 30, at least two main collection bottles 40, a supply device 50, and a condenser 60. The molecular distillation apparatus 20 is mounted on the frame 10. The upper part of the molecular distillation apparatus 20 has a feed inlet 21, and the lower part of the molecular distillation apparatus 20 has a condensation outlet 22 and at least one collection outlet 23. The connecting switching pipe 30 is connected to the collection outlet 23 and has at least two freely switchable discharge ports 31. The two main collection bottles 40 are detachably connected to their corresponding discharge ports 31. The supply device 50 communicates with the feed inlet 21. The condenser 60 is mounted on the frame 10 and connected to the condensation outlet 22. The condenser 60 has two freely switchable condensation collection bottles 61.

[0026] The condenser 60 has a conventional condenser tube structure, or it can adopt the chilled water circulation system in the molecular distillation equipment for 3-BPC production described in patent CN203564805U. The molecular distillation apparatus 20 in this application has a conventional distillation apparatus structure, with a rotating scraper and a heater inside. A rotary motor is also installed on the molecular distillation apparatus 20, which drives the rotating scraper to rotate. This is a conventional structure and will not be described in detail here.

[0027] In one embodiment of this application, to facilitate the movement of the entire distillation system, casters 11 are provided at the bottom of the frame 10, wherein the casters 11 are casters with brakes. Simultaneously, several mounting rods are provided on the frame 10, and the condenser 60, molecular distillation apparatus 20, connecting switching pipe 30, two main collection bottles 40, and supply device 50 can all be mounted on the frame 10 via snap-fits or a dedicated mounting structure. In one embodiment of this application, to better support the collection bottles 40 and the condensation collection bottle 61, a support ring 12 is provided on the frame 10, which supports the bottom of the collection bottles 40 and the condensation collection bottle 61.

[0028] It should be noted that, in order to facilitate the discharge of the collected distilled solution, both the bottom of the collection bottle 40 and the condensation collection bottle 61 are equipped with a discharge valve structure.

[0029] The molecular distillation separation device for resin production is based on the existing molecular distiller 20 and is connected to a switching pipe 30. Multiple freely switchable outlets 31 on the switching pipe 30 are connected to the main collection bottle 40, allowing different main collection bottles 40 to be independently connected to the molecular distiller 20. This avoids the impact on the gas pressure within the molecular distiller 20 when operators operate on the main collection bottle 40 filled with solution, and also does not affect the condensation pressure within the condenser 60. Furthermore, the condenser 60 has two freely switchable condensation collection bottles 61. This design also prevents the operation of the condensation collection bottle 61 filled with condensate from affecting the entire distillation system, ensuring stable distillation.

[0030] See further Figure 1 and Figure 2 In one embodiment, to facilitate rapid condensation of the evaporated solution and improve condensation quality, the condensation outlet 22 is connected to a connecting pipe 24, which is inclined upwards. The condenser 60 is connected to the outlet of the connecting pipe 24. This arrangement of the connecting pipe 24 serves as an extension of the cooling process, allowing partial condensation of the mixed vapor evaporated in the molecular still 20 within this area, which then flows back into the molecular still 20 for secondary distillation. Only fully vaporized vapor can enter the condenser 60 for cooling, thus improving the quality of product separation.

[0031] Furthermore, in the actual distillation process, during the cooling process, high-temperature steam continuously condenses in the condenser 60, and at the same time, a certain amount of material steam continuously lingers in the condenser 60. In order to accelerate the condensation of these material steams and to accelerate the entry of new steam into the condenser 60 for condensation, a recovery pipe 25 is connected to the condenser 60. The recovery pipe 25 is connected to the supply device 50, in which the mixture in the supply device 50 is used to redissolve these steam materials, so that they can be circulated into the molecular still 20 for circulating distillation.

[0032] Furthermore, to further improve the condensation effect, two condensers 60 are provided, with their upper parts connected. A pressure relief valve 62 is connected to the upper end of either condenser 60. One condenser 60 is connected to the connecting pipe 24, while the condenser 60 not connected to the connecting pipe 24 is connected to the recovery pipe 25. This arrangement allows the steam to remain in the two condensers 60 for a longer time and improves cooling efficiency.

[0033] See further Figure 3To facilitate the connection to the collection outlet 23 and to prevent interference with the assembly and disassembly of the two main collection bottles 40, in one embodiment of this application, the connecting switching pipe 30 is T-shaped. The vertical pipe of the connecting switching pipe 30 communicates with the collection outlet 23, and both ends of the horizontal pipe of the connecting switching pipe 30 are provided with connectors 32. The discharge port 31 is located inside the connector 32. A switching valve 33 is provided at the connection between the vertical and horizontal pipes of the connecting switching pipe 30. The main collection bottle 40 can be detachably mounted on the connector 32. In practice, to accommodate the thermal expansion and contraction of the entire system, the main collection bottle 40 and the connector 32 are connected by a flexible hose. A support frame is provided on the outside of the hose, with both ends connected to the bottle mouth of the main collection bottle 40 and the connector 32, respectively. This design prevents the main collection bottle 40 and the connector 32 from becoming loosely connected due to thermal expansion during the distillation process.

[0034] Furthermore, to facilitate the installation of the connecting switching pipe 30, a mounting head 34 is provided on the vertical or horizontal pipe of the connecting switching pipe 30, and the mounting head 34 is connected to the frame 10. The mounting head 34 is either a locking structure or a snap ring structure.

[0035] Furthermore, in the actual production process, the steam generated by the molecular still 20 will cause the entire system to have a certain high pressure relative to the outside. At the same time, the molecular still 20, the main collecting bottle 40 and the condensing collecting bottle 61 have different temperatures, which will inevitably generate a certain pressure difference. These pressure differences will reduce the steam flow inside the entire distillation system. Therefore, in one embodiment, all the main collecting bottles 40 and condensing collecting bottles 61 are connected to the supply device 50 through a pressure relief reflux pipe 70. Since the mixed gas inside the collecting bottle 40 and the condensing collecting bottle 61 always occupies part of the internal space of the collecting bottle 40 and the condensing collecting bottle 61, it will reduce the speed at which the new vapor generated in the molecular still 20 enters the main collecting bottle 40 and the condensing collecting bottle 61. At the same time, the condensation rate in the main collecting bottle 40 and the condensing collecting bottle 61 may be less than the generation rate of the molecular still 20. Therefore, in this application, the undistilled low-temperature material in the supply device 50 is used to quickly absorb the vapor in the main collecting bottle 40 and the condensing collecting bottle 61, thereby accelerating the condensation of the newly evaporated gas in the molecular still 20 in the main collecting bottle 40 and the condensing collecting bottle 61, and thus accelerating the condensation efficiency.

[0036] See further Figure 2 and Figure 3In one embodiment of this application, to achieve continuous feeding and adapt to industrial production, the feeding device 50 includes a storage tank 51, a feeding pump 52, and a buffer 53. The storage tank 51 is connected to the inlet 21 via a feeding pipe 54. The feeding pump 52 is mounted on the feeding pipe 54, and the buffer 53 is mounted on the feeding pipe 54 between the feeding pump 52 and the inlet 21. The pressure relief return pipe 70 is connected to the buffer 53. The storage tank 51, the feeding pump 52, and the buffer 53 are all mounted on the frame 10.

[0037] It should be noted that, in this application, since the material in storage tank 51 is at room temperature, this material is mixed and absorbed together with the vapor returning from the pressure relief reflux pipe 70 within the buffer 53. This allows it to naturally absorb the high-temperature vapor remaining in the main collecting bottle 40 and the condenser collecting bottle 61, accelerating the circulation of the entire distillation system. Simultaneously, the vapor returning from the pressure relief reflux pipe 70 can preheat the material in buffer 53, which can improve the distillation efficiency of the molecular still 20 to a certain extent, preventing a drop in the overall distillation temperature of the molecular still 20 when new material enters, thus ensuring distillation efficiency.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A molecular distillation separation apparatus for resin production, characterized in that, include frame; A molecular distillation apparatus is mounted on the frame; the upper part of the molecular distillation apparatus has a feed inlet, and the lower part of the molecular distillation apparatus has a condensation outlet and at least one collection outlet. A connecting switching pipe is connected to the collection outlet, and the connecting switching pipe is provided with at least two freely switchable discharge ports; At least two main collection bottles are detachably connected to the corresponding discharge ports; A supply device connected to the feed inlet; A condenser is mounted on the frame and connected to the condensation outlet; the condenser has two freely switchable condensation collection bottles.

2. The molecular distillation separation apparatus for resin production according to claim 1, characterized in that: The condenser outlet is connected to a connecting pipe, which is inclined upwards, and the condenser is connected to the outlet of the connecting pipe.

3. The molecular distillation separation apparatus for resin production according to claim 2, characterized in that: The condenser is connected to a recovery pipe, which is connected to a supply device.

4. The molecular distillation separation apparatus for resin production according to claim 3, characterized in that: The condenser is provided in two parts, and the upper parts of the two condensers are connected. The upper end of each condenser is connected to a pressure relief valve. Each condenser is connected to the connecting pipe, and the condenser not connected to the connecting pipe is connected to the recovery pipe.

5. The molecular distillation separation apparatus for resin production according to claim 1, characterized in that: The connecting switching pipe is T-shaped. The vertical pipe of the connecting switching pipe is connected to the collection outlet. Both ends of the horizontal pipe of the connecting switching pipe are provided with connectors. The discharge port is located inside the connector. A switching valve is provided at the connection between the vertical pipe and the horizontal pipe of the connecting switching pipe. The main collection bottle can be detachably installed on the connector.

6. The molecular distillation separation apparatus for resin production according to claim 5, characterized in that: The vertical or horizontal tubes on the connecting switching tube are provided with mounting heads, which are connected to the frame.

7. A molecular distillation separation apparatus for resin production according to any one of claims 1-6, characterized in that: All of the main collection bottles and condensate collection bottles are connected to the supply device via pressure relief return pipes.

8. The molecular distillation separation apparatus for resin production according to claim 7, characterized in that: The supply device includes a storage tank, a supply pump, and a buffer. The storage tank is connected to the inlet through a supply pipe. The supply pump is installed on the supply pipe. The buffer is installed on the supply pipe between the supply pump and the inlet. The pressure relief return pipe is connected to the buffer.

9. A molecular distillation separation apparatus for resin production according to claim 8, characterized in that: The storage tank, supply pump, and buffer are all mounted on the rack.

10. A molecular distillation separation apparatus for resin production according to claim 1, characterized in that: The bottom of the frame is equipped with casters.

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