A rectification purification device for preparing high-purity ethylhydrazine

Abstract

The application relates to a rectification and purification device for preparing high-purity ethyl hydrazine and relates to the technical field of ethyl hydrazine preparation; the rectification and purification device for preparing high-purity ethyl hydrazine comprises a setting frame, a feeding mechanism, a rectification mechanism and a collecting mechanism are further arranged on the setting frame, the rectification mechanism comprises a rectification kettle and a rectification tower, the feeding mechanism is used for feeding raw materials into the rectification tower, the rectification kettle is used for rectifying the fed raw materials, and the temperature during rectification is gradually increased, so that light component impurities, ethyl hydrazine and high component impurities in the raw materials are sequentially distilled, the rectification tower is arranged at the top of the rectification kettle, a condenser is further arranged at the top, and the condenser is used for condensing the steam rising at the top in the rectification tower into a liquid state, and the collecting mechanism is used for sequentially and respectively collecting the condensed light component impurities, ethyl hydrazine and high component impurities. The application has the effects of simultaneously effectively removing light components and separating heavy components in one rectification process.

Description

Technical Field

[0001] This application relates to the field of ethyl hydrazine preparation technology, and in particular to a distillation and purification apparatus for preparing high-purity ethyl hydrazine. Background Technology

[0002] Ethylhydrazine (C2H8N2) is an important organic synthesis intermediate widely used in pharmaceuticals, pesticides, aerospace, and polymer materials. During the production of high-purity ethylhydrazine, the crude product typically contains both low-boiling-point byproducts (such as 1,1-diethylhydrazine, 1,2-diethylhydrazine, and water) and high-boiling-point byproducts (such as polymerization byproducts and unreacted raw materials). To obtain ethylhydrazine products that meet high-specification applications (such as pharmaceutical or rocket fuel grade), efficient purification is essential.

[0003] Regarding the aforementioned technologies, existing technologies typically employ single-tower distillation columns for purification. These columns utilize the boiling point differences between ethyl hydrazine (approximately 107.9°C at atmospheric pressure) and various byproducts to perform multiple gas-liquid mass transfers within the column, ultimately collecting the product from the top or side stream. However, traditional single-tower distillation columns struggle to effectively remove light components (low-boiling-point impurities) and separate heavy components (high-boiling-point impurities) simultaneously in a single distillation process. This results in low product purity, which requires further improvement. Summary of the Invention

[0004] In order to effectively remove light components and separate heavy components simultaneously in a single distillation process, this application provides a distillation purification apparatus for preparing high-purity ethyl hydrazine.

[0005] This application provides a distillation and purification apparatus for preparing high-purity ethyl hydrazine, which adopts the following technical solution: A distillation purification apparatus for preparing high-purity ethyl hydrazine includes a frame, on which a feeding mechanism, a distillation mechanism, and a collection mechanism are also provided. The distillation mechanism includes a distillation kettle and a distillation column. The feeding mechanism is used to feed raw materials into the distillation column. The distillation kettle is used to distill the fed raw materials and gradually increase the temperature during distillation so that light component impurities, ethyl hydrazine, and high component impurities in the raw materials are distilled out sequentially. The distillation column is located on top of the distillation kettle and is equipped with a condenser on top to condense the rising vapor in the top of the distillation column into a liquid state. The collection mechanism is used to collect the condensed light component impurities, ethyl hydrazine, and high component impurities sequentially and separately.

[0006] By adopting the above technical solution and configuring the distillation mechanism, the distillation kettle can distill the incoming raw material, and the temperature can be gradually increased during the distillation process. This allows the components with different boiling points in the raw material, namely light component impurities, ethyl hydrazine, and high component impurities, to be distilled into gases sequentially as the distillation temperature increases. These gases then enter the upper distillation column, where they are condensed by a condenser and collected sequentially by a collection mechanism. This achieves the purification of ethyl hydrazine and effectively removes light components and separates heavy components simultaneously in a single distillation process, effectively ensuring the purity of the purified product.

[0007] Preferably, the mounting frame is also provided with a lifting mechanism, which includes a lifting frame and a drive assembly. The lifting frame is slidably connected to the mounting frame, and the sliding direction is the height direction of the mounting frame. The drive assembly drives the lifting frame to slide. The collecting mechanism is mounted on the lifting frame.

[0008] By adopting the above technical solution and setting the lifting mechanism, the collection tank inside the collection mechanism can be set on the lifting frame. This allows relevant personnel to adjust the installation height of the collection tank by driving the lifting frame to slide according to the actual installation needs before installing the collection tank, thereby changing the height of the lifting frame. This eliminates the need to remanufacture the setting frame, effectively facilitating the installation of the collection tank.

[0009] Preferably, the lifting frame is also provided with a locking mechanism, which includes a first locking frame and a transmission assembly. One end of the first locking frame is rotatably connected to the lifting frame, and the other end is used to be inserted into the setting frame after rotation. The setting frame is also provided with a plurality of locking slots for the first locking frame to be inserted. The transmission assembly is used to drive the first locking frame to rotate.

[0010] By adopting the above technical solution and setting the locking mechanism, when the height of the lifting frame is adjusted and it is necessary to fix the lifting frame, the relevant personnel can drive the first locking frame to rotate, so that one end of the first locking frame is inserted into the setting frame, thereby locking and fixing the lifting frame and effectively facilitating the operation of the relevant personnel.

[0011] Preferably, the transmission assembly includes a sliding frame, a first transmission frame, and a driving member. The sliding frame is slidably connected to the lifting frame. One end of the first transmission frame is rotatably connected to the sliding frame, and the other end is rotatably connected to the first locking frame. The driving member is used to drive the sliding frame to slide.

[0012] By adopting the above technical solution and configuring the transmission components, relevant personnel can drive the sliding frame to slide relative to the lifting frame through the drive component. This causes the sliding frame to drive the first locking frame to rotate through the first transmission frame, thereby driving the first locking frame and converting the sliding of the first locking frame into the sliding of the sliding frame, effectively ensuring the stability of the first locking frame when it is in the locked state.

[0013] Preferably, the locking mechanism further includes a second locking frame and a second transmission frame. The second locking frame is located on the side of the lifting frame away from the first locking frame, and one end is rotatably connected to the lifting frame, while the other end is used to be inserted into the lifting frame after rotation. One end of the second transmission frame is rotatably connected to the sliding frame, and the other end is rotatably connected to the second locking frame.

[0014] By adopting the above technical solution, the second locking frame and the second transmission frame are configured so that when the sliding frame slides, the sliding frame can drive the second locking frame to rotate simultaneously through the second transmission frame, thereby enabling the second locking frame to be inserted into the mounting frame and lock the lifting frame at the same time as the first locking frame, effectively ensuring the stability of the lifting frame when locked.

[0015] Preferably, the locking mechanism further includes a reinforcing frame and a synchronization component. The number of reinforcing frames is set to several, and they are all located on the side of the lifting frame away from the first locking frame and the second locking frame. One end of each reinforcing frame is rotatably connected to the lifting frame, and the other end is used to be inserted into the side wall of the lifting frame. The second locking frame drives each reinforcing frame to rotate through the synchronization component.

[0016] By adopting the above technical solution, the arrangement of the reinforcement frame and the synchronization component enables each reinforcement frame to rotate when the second locking frame rotates, through the synchronization component. This allows each reinforcement frame to rotate and be inserted into the setting frame during the process of the end of the second locking frame being inserted into the setting frame, thereby ensuring the locking effect between the lifting frame and the setting frame and ensuring the stability of the lifting frame when locked.

[0017] Preferably, the synchronization component includes a first synchronization frame and a second synchronization frame. The first synchronization frame is rotatably connected to each of the reinforcing frames. One end of the second synchronization frame is rotatably connected to one of the reinforcing frames, and the other end is rotatably connected to the second locking frame.

[0018] By adopting the above technical solution and setting the synchronization component, when the second locking frame rotates, the second locking frame can drive one of its reinforcing frames to rotate through the second synchronization frame, and the reinforcing frame can drive each reinforcing frame to rotate simultaneously through the second synchronization frame, thereby achieving synchronous drive of each reinforcing frame without requiring additional operation from relevant personnel, effectively facilitating the operation of relevant personnel.

[0019] Preferably, the drive assembly includes a drive handle, a drive gear, and a rack. The rack is mounted on the mounting frame and extends in the height direction of the mounting frame. The drive gear is rotatably connected to the lifting frame and meshes with the rack. The drive handle is connected to the drive gear.

[0020] By adopting the above technical solution and configuring the drive components, when it is necessary to adjust the height of the lifting frame, the relevant personnel only need to turn the drive handle, which causes the drive handle to rotate together with the drive gear. In turn, the drive gear, under the action of meshing with the set gear, drives the lifting frame to slide together, thereby realizing the adjustment of the height of the lifting frame.

[0021] Preferably, the drive handle is slidably connected to the drive gear, and the driving component includes a drive frame and a sleeve ring. The sleeve ring is sleeved on the drive handle and rotatably connected to the drive handle. One end of the drive frame is rotatably connected to the sleeve ring, and the other end is rotatably connected to the sliding frame.

[0022] By adopting the above technical solution and configuring the drive handle and the driving component, when it is necessary to drive the first locking frame to rotate, the relevant personnel only need to slide the drive handle, which will cause the sleeve ring to slide together. This allows the sleeve ring to drive the sliding frame through the driving frame, thereby driving the sliding frame. This enables the relevant personnel to lock the lifting frame simply by pushing the drive handle to slide after adjusting the height of the lifting frame, effectively facilitating the operation of the relevant personnel.

[0023] Preferably, the collection mechanism includes a distributor, several distribution pipes and several collection tanks. The collection tanks are all arranged on the mounting frame and correspond one-to-one with the several distribution pipes. The inlet end of the distributor is connected to the outlet of the condenser, the distillation end is connected to one end of each distribution pipe, the other end of each distribution pipe is connected to the corresponding collection tank, and each distribution pipe is provided with a distribution valve.

[0024] By adopting the above technical solution and specifically configuring the collection mechanism, the liquid condensed by the condenser on the distillation column can enter the corresponding distribution pipe through the distillation end of the distributor, and then enter the corresponding collection tank through the distribution pipe, thereby realizing the separate collection of light component impurities, ethyl hydrazine and high component impurities.

[0025] In summary, this application includes at least one of the following beneficial technical effects: The distillation mechanism is designed to allow the distillation kettle to distill the incoming raw material. During the distillation process, the temperature can be gradually increased, allowing the components with different boiling points in the raw material—namely, light impurities, ethyl hydrazine, and high-grade impurities—to be distilled into gases sequentially as the distillation temperature increases. These gases then enter the upper distillation column, where they are condensed by a condenser and collected sequentially by a collection mechanism. This process purifies ethyl hydrazine and effectively removes light components and separates heavy components simultaneously in a single distillation process, ensuring the purity of the purified product. The lifting mechanism allows the collection tank inside the collection mechanism to be mounted on the lifting frame. This allows personnel to adjust the installation height of the collection tank by driving the lifting frame to slide according to the actual installation requirements before installing the collection tank, thereby eliminating the need to remanufacture the mounting frame and effectively facilitating the installation of the collection tank. The specific design of the collection mechanism allows the liquid condensed by the condenser on the distillation column to enter the corresponding distribution pipe through the distillation end of the distributor, and then enter the corresponding collection tank through the distribution pipe, thereby realizing the separate collection of light component impurities, ethyl hydrazine and high component impurities. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the distillation and purification apparatus used to prepare high-purity ethyl hydrazine in Embodiment 1 of this application.

[0027] Figure 2 This is a structural schematic diagram illustrating the lifting mechanism in Embodiment 2 of this application.

[0028] Figure 3 This is a schematic diagram illustrating the structure of the transmission component in Embodiment 2 of this application.

[0029] Figure 4 This is a schematic diagram illustrating the structure of the locking component in Embodiment 2 of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Setting frame; 2. Feeding mechanism; 3. Distillation mechanism; 31. Distillation kettle; 32. Distillation column; 4. Collection mechanism; 41. Distributor; 42. Distribution pipe; 43. Collection tank; 44. Distribution valve; 5. Lifting mechanism; 51. Lifting frame; 52. Drive assembly; 521. Drive handle; 522. Drive gear; 523. Setting rack; 6. Locking groove; 7. Locking mechanism; 71. Locking assembly; 711. Fixed frame; 712. Elastic element; 72. First locking frame; 73. Transmission assembly; 731. Sliding frame; 732. First transmission frame; 733. Driving element; 7331. Driving frame; 7332. Sleeve ring; 74. Second locking frame; 75. Second transmission frame; 76. Reinforcing frame; 77. Synchronization assembly; 771. First synchronization frame; 772. Second synchronization frame. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] Example 1

[0033] Example 1 of this application discloses a distillation purification apparatus for preparing high-purity ethylhydrazine. (Refer to...) Figure 1 The distillation purification apparatus for preparing high-purity ethyl hydrazine includes a frame 1, on which a feeding mechanism 2, a distillation mechanism 3, and a collection mechanism 4 are also provided. The distillation mechanism 3 includes a distillation kettle 31 and a distillation column 32. The feeding mechanism 2 is used to introduce the raw material into the distillation column 32. The distillation kettle 31 is used to distill the introduced raw material, gradually increasing the temperature during distillation to sequentially distill out light component impurities, ethyl hydrazine, and high component impurities. The distillation column 32 is located at the top of the distillation kettle 31, and a condenser is also provided at the top to condense the rising vapor in the distillation column 32 into a liquid state. The collection mechanism 4 is used to sequentially and separately collect the condensed light component impurities, ethyl hydrazine, and high component impurities.

[0034] Reference Figure 1 In this embodiment, the feeding mechanism 2 is configured as a combination of a raw material tank, a feed pipe, and a pump. The raw material tank is located on one side of the mounting frame 1 and is used to store the raw material to be distilled. One end of the feed pipe is connected to the raw material tank, and the other end is connected to the distillation vessel 31. The pump is located on the feed pipe and is used to draw the raw material from the raw material tank and introduce it into the distillation vessel 31.

[0035] Reference Figure 1The mounting frame 1 is placed on the ground, and the distillation vessel 31 is fixedly installed at the bottom of the mounting frame 1. The distillation vessel 31 is also equipped with a heating device to heat the raw material inside. The distillation column 32 is fixedly installed on the top of the mounting frame 1, and the bottom of the distillation column 32 is fixed to the top of the distillation vessel 31 by a flange and is connected to the chamber inside the distillation vessel 31.

[0036] Reference Figure 1 The condenser at the top of the distillation column 32 (not shown in the figure) is integrated and installed at the top of the distillation column 32 so that the vapor rising from the top of the distillation column 32 enters the condenser and is condensed into liquid by the cooling medium. The distillation kettle 31, the distillation column 32 and the condenser integrated at the top of the distillation column 32 are all existing technologies, so they will not be described in detail here.

[0037] Reference Figure 1 In this embodiment, a control unit is also provided on the mounting frame 1. The control unit includes a temperature sensor and a PLC controller. The temperature sensor is fixedly installed inside the distillation kettle 31 and at the top of the distillation column 32 to monitor the heating temperature and the steam temperature at the top of the column in real time, serving as the basis for determining the fraction switching. The temperature sensor and the heating device inside the distillation kettle 31 are both communicatively connected to the PLC controller, so that the PLC controller can control the heating power of the heating device according to the detection data of the temperature sensor, so that the temperature inside the distillation kettle 31 is roughly divided into three stages: 60–65℃, 100–130℃, and above 140℃, thereby distilling out light component impurities, ethyl hydrazine, and high component impurities respectively.

[0038] Reference Figure 1 The collection mechanism 4 includes a distributor 41, several distribution pipes 42, and several collection tanks 43. In this embodiment, there are three distribution pipes 42 and three collection tanks 43, which are arranged in a one-to-one correspondence. The distributor 41 is a reflux distributor, which is fixedly installed on the top of the mounting frame 1, and its inlet end is connected to the outlet of the condenser, so as to distribute the condensate into reflux liquid and distillate liquid according to a set ratio.

[0039] Reference Figure 1 The reflux outlet of the reflux distributor is connected to the top of the distillation column 32 via a pipe, and the distillation outlet is connected to one end of each distribution pipe 42 via a pipe. The other end of each distribution pipe 42 is connected to a corresponding collection tank 43, and each collection tank 43 is fixedly installed on the mounting frame 1. This reflux distributor is prior art and will not be described in detail here. In this embodiment, the distillation outlet of the reflux distributor is connected to an inert gas via a pipe, so that the inert gas enters the distillation kettle 31 through the reflux distributor to protect the distillation process and ensure safety.

[0040] Reference Figure 1Each distribution pipe 42 is provided with a distribution valve 44. In this embodiment, the distribution valve 44 is a solenoid valve and is used to control the opening and closing of the distribution pipe 42. It is also communicatively connected to the PLC controller so that the PLC controller can control the solenoid valve to make the condensed liquid in the distributor 41 flow into the corresponding collection tank 43.

[0041] The implementation principle of the distillation purification apparatus for preparing high-purity ethyl hydrazine in Embodiment 1 of this application is as follows: The distillation mechanism 3 is configured so that the distillation kettle 31 can distill the incoming raw material, and the temperature during the distillation process can be gradually increased, so that the parts of the raw material with different boiling points, namely light component impurities, ethyl hydrazine and high component impurities, can be distilled into gases in sequence as the temperature during distillation increases, enter the distillation column 32 above, and after being condensed by the condenser in the distillation column 32, flow into different collection tanks 43 in sequence, thereby realizing the purification of ethyl hydrazine, and can effectively remove light components and separate heavy components in one distillation process, effectively ensuring the purity of the purified product.

[0042] Example 2

[0043] The difference between Embodiment 2 and Embodiment 1 in this application is that: (Refer to...) Figure 2 and Figure 3 The mounting frame 1 is also equipped with a lifting mechanism 5, which includes a lifting frame 51 and a drive assembly 52. ​​The four corners of the lifting frame 51 are fitted onto the mounting frame 1 and are all slidably connected to the mounting frame 1. The sliding direction is set to the height direction of the mounting frame 1. Each collection tank 43 is fixedly installed on the lifting frame 51 so that the height of the collection tank 43 can be adjusted by the lifting frame 51.

[0044] Reference Figure 3 and Figure 4 The drive assembly 52 includes a drive handle 521, a drive gear 522, and a rack 523. The rack 523 is located on a rod at one end of the length and width directions of the mounting frame 1, and is embedded and fixedly installed on the side wall of the mounting frame 1, extending in the height direction of the mounting frame 1. The drive gear 522 is rotatably connected to the side of the lifting frame 51 near the rack 523 via a pin, and the drive gear 522 and the rack 523 are meshed. One end of the drive handle 521 is inserted into the drive gear 522 and is slidably connected to the drive gear 522 (i.e., one end of the drive handle 521 is not a complete cylinder), and the sliding direction is the axial direction of the drive gear 522. The drive handle 521 and the drive gear 522 are coaxially arranged to facilitate the rotation of the drive handle 521 by relevant personnel.

[0045] Reference Figure 2In this embodiment of the application, a plurality of locking grooves 6 are provided on the rod at the intersection of the length direction and the width direction of the mounting frame 1, and the plurality of locking grooves 6 are evenly and equidistantly arranged along the height direction of the mounting frame 1.

[0046] Reference Figure 3 and Figure 4 The lifting frame 51 is also equipped with a locking mechanism 7. The locking mechanism 7 includes a locking component 71, a first locking frame 72, a transmission component 73, a second locking frame 74 and a second transmission frame 75. The locking component 71 includes a fixed frame 711 and an elastic element 712. The fixed frame 711 is slidably connected to the lifting frame 51, and the sliding direction is perpendicular to the sliding direction of the drive handle 521 (i.e., the axial direction of the drive gear 522).

[0047] Reference Figure 3 and Figure 4 The fixed frame 711 has a guide surface at one end near the drive gear 522. In this embodiment, the elastic element 712 is a compression spring, which is sleeved on the end of the fixed frame 711 away from the drive gear 522, with one end abutting against the fixed frame 711 and the other end abutting against the lifting frame 51, so as to allow the fixed frame 711 to be reset by its own elastic force. The end of the drive handle 521 also has an insertion slot for the fixed frame 711 to be inserted. In this embodiment, the insertion slot is set as an annular shape to accommodate the rotation of the drive handle 521.

[0048] Reference Figure 3 and Figure 4 The transmission assembly 73 includes a sliding frame 731, a first transmission frame 732, and a driving member 733. The driving member 733 includes a driving frame 7331 and a sleeve ring 7332. The sleeve ring 7332 is sleeved on one end of the drive handle 521 and is rotatably connected to the drive handle 521 via a bearing. The rotation axis of the sleeve ring 7332 is the same as the axis of the drive handle 521. The sleeve ring 7332 is slidably connected to the lifting frame 51 via a slide rail, and the sliding direction is the width direction of the lifting frame 51, i.e., the axial direction of the drive handle 521. One end of the driving frame 7331 is rotatably connected to the sleeve ring 7332 via a pin, and the other end is rotatably connected to the end of the sliding frame 731 via a pin.

[0049] Reference Figure 2 , Figure 3 and Figure 4The sliding frame 731 is sleeved on one side of the lifting frame 51 along its width direction and is slidably connected to the lifting frame 51, with the sliding direction being the length direction of the lifting frame 51. One end of the first transmission frame 732 is rotatably connected to the sliding frame 731 via a pin, and the other end is rotatably connected to one end of the first locking frame 72 via a pin. The first locking frame 72 is L-shaped, with its middle part rotatably connected to the lifting frame 51 via a pin, and its other end is used to insert into the locking groove 6 of the corresponding rod of the mounting frame 1 after rotation.

[0050] Reference Figure 2 , Figure 3 and Figure 4 The second locking frame 74 is L-shaped and located on the side of the sliding frame 731 on the lifting frame 51, at the end of the lifting frame 51 away from the first locking frame 72. One end of the second transmission frame 75 is rotatably connected to one end of the second locking frame 74 via a pin, and the other end is rotatably connected to the sliding frame 731 via a pin. The middle part of the second locking frame 74 is rotatably connected to the lifting frame 51 via a pin, and the end of the second locking frame 74 away from the second transmission frame 75 is used to insert into the locking groove 6 on the corresponding rod of the setting frame 1 after rotation.

[0051] Reference Figure 2 and Figure 3 The locking mechanism 7 also includes a reinforcing frame 76 and a synchronization component 77. The number of reinforcing frames 76 is set to several. In this embodiment, the number of reinforcing frames 76 is set to two. Both reinforcing frames 76 are located on the side of the setting frame 1 along its own width direction and away from the first locking frame 72, and the two reinforcing frames 76 are respectively located at both ends of the setting frame 1 along its own length direction.

[0052] Reference Figure 2 and Figure 3 The synchronization component 77 includes a first synchronization frame 771 and a second synchronization frame 772. One end of the second synchronization frame 772 is rotatably connected to one end of the second locking frame 74 via a pin, and the other end is rotatably connected to one end of the reinforcing frame 76 away from the first locking frame 72 via a pin. Each reinforcing frame 76 is L-shaped, and the middle of each reinforcing frame 76 is rotatably connected to the lifting frame 51 via a pin. One end of each reinforcing frame 76 is rotatably connected to the corresponding end of the first synchronization frame 771 via a pin, and the other end is used to be inserted into the locking groove 6 on the corresponding rod of the setting frame 1 after rotation.

[0053] Reference Figure 2 , Figure 3 and Figure 4In the initial state, before installing the collection tank 43 and when the height of the lifting frame 51 needs to be adjusted, the first locking frame 72, the second locking frame 74, and each reinforcing frame 76 are not inserted into the locking groove 6. At this time, the drive handle 521 is located at the end of its sliding path away from the fixed frame 711. Subsequently, rotating the drive handle 521 causes the drive gear 522 to rotate, thereby causing the lifting frame 51 to rise and fall.

[0054] When the adjustment is complete and the lifting frame 51 needs to be locked, the drive handle 521 slides towards the fixed frame 711. During this process, the drive handle 521 drives the sleeve ring 7332 to slide as well, thereby driving the sliding frame 731 to slide via the drive frame 7331. At this time, the sliding frame 731 drives the first locking frame 72 to rotate via the first transmission frame 732, and drives the second locking frame 74 to rotate via the second transmission frame 75.

[0055] During this process, the second locking frame 74 drives the corresponding reinforcing frame 76 to rotate via the second synchronous frame 772. This reinforcing frame 76, in turn, drives another reinforcing frame 76 to rotate via the first synchronous frame 771. This causes the first locking frame 72, the second locking frame 74, and each reinforcing frame 76 to rotate, and all of them to be inserted into their corresponding locking slots 6, thus locking the lifting frame 51. Afterwards, the collection tank 43 is installed on the lifting frame 51, completing the installation of the collection tank 43.

[0056] The implementation principle of the distillation purification apparatus for preparing high-purity ethyl hydrazine in Embodiment 2 of this application is as follows: When it is necessary to adjust the height of the lifting frame 51, the drive handle 521 is rotated, which drives the drive gear 522 to rotate, thereby causing the lifting frame 51 to rise or fall. After the adjustment is completed, when it is necessary to lock the lifting frame 51, the drive handle 521 is slid towards the fixed frame 711. During this process, the drive handle 521 drives the sleeve ring 7332 to slide together, thereby causing the sleeve ring 7332 to drive the sliding frame 731 to slide through the drive frame 7331. At this time, the sliding frame 731 drives the first locking frame 72 to rotate through the first transmission frame 732, and drives the second locking frame 74 to rotate through the second transmission frame 75.

[0057] During this process, the second locking frame 74 drives the corresponding reinforcing frame 76 to rotate via the second synchronous frame 772. This reinforcing frame 76, in turn, drives another reinforcing frame 76 to rotate via the first synchronous frame 771. This causes the first locking frame 72, the second locking frame 74, and each reinforcing frame 76 to rotate, and all of them to be inserted into their corresponding locking slots 6, thus locking the lifting frame 51. Afterwards, the collection tank 43 is installed on the lifting frame 51, completing the installation of the collection tank 43.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A distillation and purification apparatus for preparing high-purity ethyl hydrazine, comprising a mounting rack (1), characterized in that: The mounting frame (1) is also equipped with a feeding mechanism (2), a distillation mechanism (3) and a collection mechanism (4). The distillation mechanism (3) includes a distillation kettle (31) and a distillation column (32). The feeding mechanism (2) is used to feed the raw material into the distillation column (32). The distillation kettle (31) is used to distill the feed material and gradually increase the temperature during distillation so that the light component impurities, ethyl hydrazine and high component impurities in the raw material are distilled out in sequence. The distillation column (32) is located at the top of the distillation kettle (31) and is also equipped with a condenser at the top to condense the vapor rising from the top of the distillation column (32) into liquid. The collection mechanism (4) is used to collect the condensed light component impurities, ethyl hydrazine and high component impurities in sequence and respectively.

2. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 1, characterized in that: The setting frame (1) is also provided with a lifting mechanism (5), which includes a lifting frame (51) and a drive component (52). The lifting frame (51) is slidably connected to the setting frame (1), and the sliding direction is the height direction of the setting frame (1). The drive component (52) slides together with the lifting frame (51). The collecting mechanism (4) is provided on the lifting frame (51).

3. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 2, characterized in that: The lifting frame (51) is also provided with a locking mechanism (7). The locking mechanism (7) includes a first locking frame (72) and a transmission assembly (73). One end of the first locking frame (72) is rotatably connected to the lifting frame (51), and the other end is used to be inserted into the setting frame (1) after rotation. The setting frame (1) is also provided with a plurality of locking slots (6) for the first locking frame (72) to be inserted. The transmission assembly (73) is used to drive the first locking frame (72) to rotate.

4. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 3, characterized in that: The transmission assembly (73) includes a sliding frame (731), a first transmission frame (732), and a driving member (733). The sliding frame (731) is slidably connected to the lifting frame (51). One end of the first transmission frame (732) is rotatably connected to the sliding frame (731), and the other end is rotatably connected to the first locking frame (72). The driving member (733) is used to drive the sliding frame (731) to slide.

5. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 4, characterized in that: The locking mechanism (7) further includes a second locking frame (74) and a second transmission frame (75). The second locking frame (74) is located on the side of the lifting frame (51) away from the first locking frame (72), and one end is rotatably connected to the lifting frame (51), and the other end is used to be inserted into the lifting frame (51) after rotation. One end of the second transmission frame (75) is rotatably connected to the sliding frame (731), and the other end is rotatably connected to the second locking frame (74).

6. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 5, characterized in that: The locking mechanism (7) further includes a reinforcing frame (76) and a synchronization component (77). The number of reinforcing frames (76) is set to several, and they are all located on the side of the lifting frame (51) away from the first locking frame (72) and the second locking frame (74). One end of each reinforcing frame (76) is rotatably connected to the lifting frame (51), and the other end is used to be inserted into the side wall of the lifting frame (51). The second locking frame (74) drives each reinforcing frame (76) to rotate through the synchronization component (77).

7. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 6, characterized in that: The synchronization component (77) includes a first synchronization frame (771) and a second synchronization frame (772). The first synchronization frame (771) is rotatably connected to each of the reinforcing frames (76). One end of the second synchronization frame (772) is rotatably connected to one of the reinforcing frames (76), and the other end is rotatably connected to the second locking frame (74).

8. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 4, characterized in that: The drive assembly (52) includes a drive handle (521), a drive gear (522), and a rack (523). The rack (523) is mounted on the mounting frame (1) and extends in the height direction of the mounting frame (1). The drive gear (522) is rotatably connected to the lifting frame (51) and meshes with the rack (523). The drive handle (521) is connected to the drive gear (522).

9. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 8, characterized in that: The drive handle (521) is slidably connected to the drive gear (522). The drive member (733) includes a drive frame (7331) and a sleeve ring (7332). The sleeve ring (7332) is sleeved on the drive handle (521) and rotatably connected to the drive handle (521). One end of the drive frame (7331) is rotatably connected to the sleeve ring (7332), and the other end is rotatably connected to the sliding frame (731).

10. The distillation and purification apparatus for preparing high-purity ethyl hydrazine according to claim 1, characterized in that: The collection mechanism (4) includes a distributor (41), a plurality of distribution pipes (42) and a plurality of collection tanks (43). The plurality of collection tanks (43) are all arranged on the mounting frame (1) and are arranged one-to-one with the plurality of distribution pipes (42). The inlet end of the distributor (41) is connected to the outlet of the condenser, and the distillation end is connected to one end of each distribution pipe (42). The other end of each distribution pipe (42) is connected to the corresponding collection tank (43). Each distribution pipe (42) is provided with a distribution valve (44).

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