A vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis

Abstract

The invention discloses a vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis, and relates to the technical field of energy-saving spiral tube-shaped heat exchange, including a heat exchange cylinder and a raw material tube. The vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis, adopts a spiral heating channel to cooperate with a conveying pipe when vaporizing the ethylenediamine raw material, extends the heating path and promotes the relative flow of ethylenediamine and heating steam, accelerates vaporization and reduces energy consumption, and can weigh and block the vaporized ethylenediamine gas through the cooperation of a weighing plate and a spring, and when a certain amount is stored, the remaining gas is sealed by a connecting ring and a closing plate to ensure that the discharge volume meets the standard, in addition, the cooperation of a clamping rod and a tension spring keeps the closing plate closed, prevents gas leakage, and improves the extraction purity and efficiency, and at the same time, during the lifting process of the connecting rod, the spiral groove cooperates with the cleaning rod to clean the outer wall of the conveying pipe, keeps it clean, ensures heat exchange efficiency, reduces energy consumption, and improves overall production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of energy-saving spiral tube heat exchange, in particular to a vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis. Background Art

[0002] Piperazine, as a cyclic organic compound containing two nitrogen atoms, has shown a wide range of application value in many industrial and medicinal fields such as medicine, pesticides, dyes, etc. due to its unique chemical structure and properties. In the preparation and synthesis process of piperazine, ethylenediamine, as an indispensable key raw material, is of self-evident importance. Ethylenediamine is a liquid under normal conditions. In order to effectively participate in the preparation and synthesis reaction of piperazine, it is usually necessary to convert it from a liquid state to a gas state so that it can be fully mixed and reacted with other chemicals. Therefore, ethylenediamine needs to be vaporized and extracted through vaporization equipment during production.

[0003] At present, the vaporization extraction method of ethylenediamine mostly adopts the test tube heating method for vaporization extraction. This method is simple and direct, but the heating efficiency is not high. There is heat loss in the process of heat transfer to ethylenediamine, and the flow rate of the continuously discharged ethylenediamine gas may be disturbed by external factors such as temperature changes and pressure fluctuations of the equipment, resulting in flow fluctuations, which in turn affects the accuracy and consistency of the reaction of ethylenediamine with other chemicals, and causes a large amount of heat energy to be lost and wasted, which is not in line with the energy-saving strategy. Summary of the invention

[0004] The object of the present invention is to provide a vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis, comprises a heat exchange cylinder, a raw material pipe, a steam pipe, and a discharge pipe, wherein the top of the heat exchange cylinder is fixedly connected to a discharge cylinder, and a heating channel is fixedly installed on the inner wall of the heat exchange cylinder, and heat insulation boards are fixedly connected to the inner wall of the heat exchange cylinder at equal distances and symmetrically corresponding to the heating channel, and a conveying pipe is fixedly connected to one side wall of two heat insulation boards that are close to each other corresponding to the heating channel, and a connecting rod is slidably connected to the inner center of one of the heat insulation boards;

[0006] The outer wall of the connecting rod is provided with a weighing and blocking component, so as to weigh and block the vaporized ethylenediamine gas when the ethylenediamine raw material is vaporized, so that the amount of vaporized ethylenediamine discharged each time meets the set standard;

[0007] The outer wall of the connecting rod is provided with a retention discharge component, so as to keep the remaining gas blocked when discharging ethylenediamine gas, and prevent the gas from leaking when being extracted and discharged;

[0008] The outer wall of the connecting rod is provided with an auxiliary cleaning component, so as to clean the outer wall of the delivery pipe when the ethylenediamine raw material is vaporized, so as to prevent scale and other substances from covering the outer wall of the delivery pipe.

[0009] Preferably, the weighing blocking component includes a weighing pan, and the outer wall of the weighing pan fits and slides with the inner wall of the discharge cylinder, the top of the connecting rod is fixed to the bottom of the weighing pan, the top outer wall of the connecting rod is provided with an annular groove, and the inner wall of the annular groove is fitted and slidably connected with a connecting ring, the outer wall of the connecting ring is hinged with a driving rod at an equal distance, and the other end of the driving rod is hinged with a sliding block, the outer wall of the sliding block is provided with a bracket one, and one side outer wall of the bracket one is fixed to the inner wall of the discharge cylinder, a sliding groove is provided in the interior of the bracket one corresponding to the sliding block, and the outer walls on both sides of the sliding block fit and slide with the inner wall of the sliding groove one, the bottom of the sliding block is fixedly connected with a closing plate, and the closing plate has a corresponding notch on the outer wall of one side facing the connecting rod, the bottom of the closing plate fits and slides with the bottom inner wall of the discharge cylinder, and the top of the closing plate fits and slides with the bottom of the bracket one.

[0010] Preferably, the inner wall of the discharge cylinder is symmetrically provided with slide grooves 2, the outer wall of the weighing pan is symmetrically fixedly connected with a limiting block, and the outer wall of the limiting block slides in close contact with the inner wall of the slide groove 2, the top of the limiting block is fixedly connected with a spring 1, and the other end of the spring 1 is fixedly connected to the inner wall of the slide groove 2, the outer wall of the slider facing the connecting rod is fixedly connected with a spring 2, and the other end of the spring 2 is fixedly connected to the inner wall of the slide groove 1, and a discharge pipe is fixedly installed on the top of the discharge cylinder, and one end of the discharge pipe is fixed to the top of the weighing pan.

[0011] Preferably, the outer wall of the sliding block on one side facing the connecting rod is fixedly connected with a fixing column corresponding to the stop and discharge component, the inner wall of the sliding groove one is provided with a through hole corresponding to the fixed column, and the outer wall of the fixing column slides in fit with the inner wall of the through hole, and the outer wall of the fixing column on one end facing the connecting rod is symmetrically provided with a slot corresponding to the stop and discharge component.

[0012] Preferably, the stop discharge component includes a second bracket, and one end of the second bracket is fixedly connected to the outer wall of the first bracket facing the connecting rod, the inner wall of the second bracket is fixedly connected to an axis column, and the outer wall of the axis column is rotatably connected to a clamping rod at an equal distance, the outer wall on the side where the two clamping rods are close to each other is fixedly connected to a tension spring, and the end of the clamping rod facing the fixed column is inclined, the outer wall on the side where the two clamping rods are close to each other is fixedly connected to a card block corresponding to the card groove, and the side wall of the card block facing the fixed column is inclined.

[0013] Preferably, the inner wall of the bracket two is slidably connected with a connecting block, and the connecting block is fixedly connected with a sliding rod on the outer wall on one side facing the connecting rod, the other end of the sliding rod passes through the interior of the bracket two and is fixedly connected with a fixed block, the outer wall of the connecting rod is equidistantly fixedly connected with a trigger rod, a slot is penetrated through the top of the fixing block corresponding to the trigger rod, and a guiding inclined groove is provided on the inner wall of the slot, a pull rod is symmetrically fixedly connected to the outer wall of the connecting block on the side away from the connecting rod, and a sliding column is fixedly connected to the top of the pull rod, a sliding groove three is penetrated through the bottom of the two clamping rods corresponding to the sliding column, and the outer wall of the sliding column slides in contact with the inner wall of the sliding groove three.

[0014] Preferably, the auxiliary cleaning component includes a second connecting ring, an outer wall of the connecting rod is provided with two annular grooves at equal distances corresponding to the second connecting ring, and the inner wall of the second connecting ring rotates in fit with the inner wall of the second annular groove, an outer wall of the two heat insulation plates on one side close to each other is fixedly connected with a support tube, and a spiral groove is correspondingly penetrated through the outer wall of the support tube, a cleaning rod is fixedly connected to the outer wall of one side of the second connecting ring, and the outer wall of the cleaning rod slides in fit with the inner wall of the spiral groove, and a through groove is penetrated through the other end of the cleaning rod corresponding to the conveying pipe.

[0015] Preferably, a cleaning brush plate is fixedly connected to the inner wall of the through groove, and the inner wall bristles of the cleaning brush plate are pressed against the outer wall of the conveying pipe.

[0016] Preferably, the raw material pipe is fixedly mounted on a side wall of the bottom of the heat exchange tube, the steam pipe is fixedly mounted on a side wall of the top of the heat exchange tube, and the exhaust pipe is fixedly mounted on a bottom of one side of the heat exchange tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the ethylenediamine raw material is vaporized, the spiral heating channel can be used in conjunction with the conveying pipe to extend the heating path, and the ethylenediamine and the heating steam can flow relative to each other, so that the heating path is more sufficient to accelerate the vaporization and prevent the increase of energy consumption. At the same time, the weighing plate can be used in conjunction with the spring 1 to weigh and block the vaporized ethylenediamine gas, and when a certain content is stored, the connecting ring 1 can be used in conjunction with the sealing plate to seal the remaining gas that is still vaporizing and rising, thereby ensuring that the amount of vaporized ethylenediamine discharged each time meets the set standard, which is beneficial to ensuring the quality of the vaporized product of this equipment.

[0019] 2. When the ethylenediamine raw material is vaporized, the clamp rod and the tension spring can cooperate to keep the closing plate closed when the closing plate is closed, preventing gas leakage during extraction and discharge, ensuring the purity and efficiency of gas extraction, and automatically driving the weighing component to reset and open the sealing component after the extraction is completed, meeting the needs of gas extraction, ensuring the effectiveness of gas extraction, optimizing the entire exhaust process, ensuring that the gas can be fully released, and helping to ensure the quality of the vaporized products of this equipment.

[0020] 3. When the ethylenediamine raw material is vaporized, during the lifting process of the connecting rod, the spiral groove and the cleaning rod can cooperate to drive multiple cleaning brushes to clean the outer wall of the conveying pipe, keep the conveying pipe clean, and avoid the appearance of scale and other substances covering the outer wall of the conveying pipe, which directly leads to a reduction in the heat exchange contact area, thereby ensuring the effective transfer of heat during the heat exchange process, which not only reduces energy consumption, but also helps to improve the overall production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the heat exchange cylinder and the discharge cylinder of the present invention;

[0023] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the first part of the weighing blocking component of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the second part of the weighing blocking component of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the stop discharge component of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the auxiliary cleaning component of the present invention.

[0028] In the figure: 1, heat exchange cylinder; 2, discharge cylinder; 3, heating channel; 4, heat insulation board; 5, conveying pipe; 6, connecting rod; 10, discharge pipe; 11, support cylinder; 12, spiral groove; 13, raw material pipe; 14, steam pipe; 15, discharge pipe; 7, weighing blocking component; 701, weighing plate; 702, ring groove 1; 703, connecting ring 1; 704, driving rod; 705, slider; 706, bracket 1; 707, slide groove 1; 708, closing plate; 709, notch; 710, slide groove 2; 711, limit block; 712, spring 1; 713 , spring two; 714, fixed column; 715, through hole; 716, card slot; 8, stop discharge component; 801, bracket two; 802, shaft column; 803, clamp rod; 804, tension spring; 805, block; 806, connecting block; 807, slide rod; 808, fixed block; 809, trigger rod; 810, slot; 811, guide inclined groove; 812, pull rod; 813, slide column; 814, slide groove three; 9, auxiliary cleaning component; 901, connecting ring two; 902, ring groove two; 903, cleaning rod; 904, through groove; 905, cleaning brush plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] For example, see Figure 1-7 The present invention provides a vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis, comprising a heat exchange tube 1, a raw material pipe 13, a steam pipe 14, and a discharge pipe 15. The top of the heat exchange tube 1 is fixedly connected with a discharge tube 2, and the inner wall of the heat exchange tube 1 is fixedly installed with a heating channel 3. The inner wall of the heat exchange tube 1 is symmetrically and equidistantly fixedly connected with heat insulation boards 4 corresponding to the heating channels 3. A side wall where two heat insulation boards 4 are close to each other is fixedly connected with a conveying pipe 5 corresponding to the heating channels 3. A connecting rod 6 is slidably connected to the inner center of one of the heat insulation boards 4.

[0031] The outer wall of the connecting rod 6 is provided with a weighing blocking component 7 .

[0032] Furthermore, the weighing blocking component 7 includes a weighing pan 701, and the outer wall of the weighing pan 701 is fitted and slid with the inner wall of the discharge cylinder 2, the top of the connecting rod 6 is fixed to the bottom of the weighing pan 701, the top outer wall of the connecting rod 6 is provided with an annular groove 702, and the inner wall of the annular groove 702 is fitted and slidably connected with a connecting ring 703, the outer wall of the connecting ring 703 is hinged with a driving rod 704 at an equal distance, and the other end of the driving rod 704 is hinged with a slider 705, the outer wall of the slider 705 is provided with a bracket 706, and the bracket One side outer wall of 706 is fixed to the inner wall of the discharge cylinder 2, and a slide groove 707 is provided inside the bracket 706 corresponding to the slider 705, and the outer walls on both sides of the slider 705 fit and slide with the inner wall of the slide groove 707, and a closing plate 708 is fixedly connected to the bottom of the slider 705, and a groove 709 is provided on the outer wall of the closing plate 708 facing the connecting rod 6, the bottom of the closing plate 708 fits and slides with the bottom inner wall of the discharge cylinder 2, and the top of the closing plate 708 fits and slides with the bottom of the bracket 706.

[0033] In this embodiment, when the ethylenediamine raw material is vaporized, the raw material pipe 13 is first fixedly installed on one side wall of the bottom of the heat exchange tube 1, and the inner wall of the heat exchange tube 1 is fixedly installed with a heating channel 3, and the inner wall of the heat exchange tube 1 is symmetrically and equidistantly fixedly connected with a heat insulation board 4 corresponding to the heating channel 3, and at the same time, a side wall close to two heat insulation boards 4 is fixedly connected with a delivery pipe 5 corresponding to the heating channel 3, and the steam pipe 14 is fixedly installed on one side wall of the top of the heat exchange tube 1, and the exhaust pipe 15 is fixedly installed on the bottom of one side of the heat exchange tube 1, so that the ethylenediamine raw material can be transported to the delivery pipe 5 through the raw material pipe 13 to move from the bottom to the top of the heat exchange tube 1, and then high-temperature steam is introduced from the steam pipe 14 to the top of the heating channel 3, and the high-temperature steam is circulated from the upper part to the lower part of the heating channel 3 through the exhaust pipe 15 located at the bottom of the heating channel 3, so as to extend the heating path and make the ethylenediamine and the heating steam flow relative to each other, so that the heating path is more sufficient to accelerate the vaporization and prevent the increase of energy consumption.

[0034] Then the vaporized ethylenediamine gas will continuously flow into the discharge cylinder 2 through the conveying pipe 5. At this time, the outer wall of the weighing pan 701 fits and slides with the inner wall of the discharge cylinder 2, and the top of the connecting rod 6 is fixed to the bottom of the weighing pan 701, and the inner wall of the discharge cylinder 2 is symmetrically provided with a slide groove 2 710. At the same time, the outer wall of the weighing pan 701 is symmetrically fixedly connected to the limiting block 711, and the outer wall of the limiting block 711 fits and slides with the inner wall of the slide groove 2 710, and the top of the limiting block 711 is fixedly connected with a spring 1 712, and the other end of the spring 1 712 is fixedly connected to the inner wall of the slide groove 2 710, so that the weighing pan 701 can be lifted up by the increasing ethylenediamine gas and the spring 1 712 can be compressed.

[0035] Then, an annular groove 702 is opened on the top outer wall of the connecting rod 6, and the inner wall of the annular groove 702 is slidably connected with a connecting ring 703, so that when the weighing plate 701 rises, the connecting rod 6 can be synchronously driven to rise, so that the connecting rod 6 can synchronously drive the connecting ring 703 to rise by using the annular groove 702, and then a driving rod 704 is hinged at an equal distance through the outer wall of the connecting ring 703, and a slider 705 is hinged on the other end of the driving rod 704, and a bracket 706 is provided on the outer wall of the slider 705, and at the same time, an outer wall of one side of the bracket 706 is fixed to the inner wall of the discharge cylinder 2, and a sliding groove 707 is opened inside the bracket 706 corresponding to the slider 705, and the slider 70 The outer walls on both sides of 5 fit and slide with the inner walls of the slide groove 707, and at the same time, a closing plate 708 is fixedly connected to the bottom of the slider 705, and a groove 709 is correspondingly provided on the outer wall of the closing plate 708 facing the connecting rod 6, and the bottom of the closing plate 708 fits and slides with the bottom inner wall of the discharge cylinder 2, and at the same time, the top of the closing plate 708 fits and slides with the bottom of the bracket 706, so that the closing plate 708 can be restricted so that the closing plate 708 can only move horizontally, so that the closing plate 708 can be used to support and limit the slider 705, so that when the connecting ring 703 rises, the three closed plates 708 in a separated state can be driven to approach each other through the three hinged driving rods 704.

[0036] When the weighing pan 701 rises to a certain height, that is, when a certain content is stored in the discharge cylinder 2, the three sealing plates 708 will be merged, thereby being able to seal the remaining gas that is still vaporizing and rising. At this time, a discharge pipe 10 is fixedly installed through the top of the discharge cylinder 2, and one end of the discharge pipe 10 is fixed to the top of the weighing pan 701, so that a certain amount of ethylenediamine gas in the discharge cylinder 2 can be extracted and discharged through the discharge pipe 10, so that the amount of vaporized ethylenediamine discharged each time meets the set standard.

[0037] As described above, when the ethylenediamine raw material is vaporized, the spiral heating channel 3 can cooperate with the conveying pipe 5 to extend the heating path, and the ethylenediamine and the heating steam can flow relative to each other, so that the heating path is more sufficient to accelerate the vaporization and prevent the increase of energy consumption. At the same time, the weighing plate 701 and the spring 712 can cooperate to weigh and block the vaporized ethylenediamine gas, and when a certain content is stored, the connecting ring 703 and the sealing plate 708 can cooperate to seal the remaining gas that is still vaporizing and rising, thereby ensuring that the amount of vaporized ethylenediamine discharged each time meets the set standard, which is beneficial to ensuring the quality of the vaporized product of the equipment.

[0038] Embodiment 2: Based on the above embodiment, a retention and discharge component 8 is provided on the outer wall of the connecting rod 6 .

[0039] Furthermore, the stay discharge component 8 includes a bracket 2 801, and one end of the bracket 2 801 is fixedly connected to the outer wall of the bracket 1 706 facing the connecting rod 6, the inner wall of the bracket 2 801 is fixedly connected with an axle column 802, and the outer wall of the axle column 802 is equidistantly connected with a clamping rod 803, the outer wall on the side where the two clamping rods 803 are close to each other is fixedly connected with a tension spring 804, and the end of the clamping rod 803 facing the fixed column 714 is inclined, the outer wall on the side where the two clamping rods 803 are close to each other is fixedly connected with a clamping block 805 corresponding to the clamping groove 716, and the side wall of the clamping block 805 facing the fixed column 714 is inclined.

[0040] In this embodiment, after the connecting rod 6 rises, one end of the bracket 2 801 is fixedly connected to the outer wall of the bracket 1 706 facing the connecting rod 6, and the inner wall of the bracket 2 801 is fixedly connected with the shaft column 802, and the outer wall of the shaft column 802 is equidistantly connected with the clamping rod 803, and at the same time, the outer wall of the side where the two clamping rods 803 are close to each other is fixedly connected with a tension spring 804, so that the tension spring 804 can be used to keep the two clamping rods 803 in a combined clamping state. At this time, during the merging process, the three closing plates 708 are fixedly connected with the fixing column 714 through the slider 705 toward the outer wall of the side of the connecting rod 6 corresponding to the stop discharge component 8, and the inner wall of the slide groove 1 707 is penetrated by a through hole 715 corresponding to the fixing column 714, and the outer wall of the fixing column 714 fits and slides with the inner wall of the through hole 715, so that the fixing column 714 can be driven to move synchronously. When the three closing plates 708 are merged, the fixing column 714 will be inserted into the through hole 715.

[0041] At this time, one end of the clamping rod 803 facing the fixed column 714 is in a bevel shape, and the outer wall on the side where the two clamping rods 803 are close to each other is fixedly connected with a block 805 corresponding to the slot 716, and the side wall of the block 805 facing the fixed column 714 is in a bevel shape. At the same time, the outer wall of one end of the fixed column 714 facing the connecting rod 6 is symmetrically provided with a slot 716 corresponding to the stop discharge component 8, so that the fixed column 714 first uses the bevel to push the two clamping rods 803 open, and when it stops, it can drive the clamping rod 803 to merge again through the tension spring 804 to make the block 805 naturally snap into the slot 716, thereby maintaining the closed state of the closing plate 708, preventing gas leakage during extraction and discharge, and ensuring the purity and efficiency of gas extraction.

[0042] Then, when the gas is extracted and discharged, as the gas in the discharge cylinder 2 decreases, the elastic force of the spring 1 712 will drive the weighing plate 701 to continuously descend and reset. At this time, the connecting ring 1 703 will slide relatively on the inner wall of the ring groove 1 702 to maintain the current height, that is, to maintain the closed state of the closing plate 708. When the gas in the discharge cylinder 2 is low to a certain level, that is, when the weighing plate 701 is about to descend and reset, the inner wall of the bracket 2 801 is slidably connected with the connecting block 806, and the outer wall of the connecting block 806 facing the connecting rod 6 is fixedly connected. Slide rod 807, and the other end of the slide rod 807 passes through the interior of the bracket 801 and is fixedly connected to a fixed block 808, and at the same time, the outer wall of the connecting rod 6 is fixedly connected to a trigger rod 809 at an equal distance, and a slot 810 is provided at the top of the fixed block 808 corresponding to the trigger rod 809, and a guiding inclined groove 811 is provided on the inner wall of the slot 810, so that when the reset is about to be completed, the trigger rod 809 can be driven by the connecting rod 6 to insert into the slot 810 and squeeze the guiding inclined groove 811, so that the three slide rods 807 move toward the direction of the connecting rod 6.

[0043] At this time, the outer wall of the side of the connecting block 806 away from the connecting rod 6 is symmetrically fixedly connected with the pull rod 812, and the top of the pull rod 812 is fixedly connected with the sliding column 813, and the bottom of the two clamping rods 803 is corresponding to the sliding column 813 and penetrates the sliding groove 814, and the outer wall of the sliding column 813 and the inner wall of the sliding groove 814 slide in contact with each other, so that the connecting block 806 can drive the two clamping rods 803 to separate through the sliding column 813, so that the clamping block 805 is detached from the clamping groove 716, and the slider 70 A second spring 713 is fixedly connected to the outer wall of one side of the connecting rod 6, and the other end of the second spring 713 is fixedly connected to the inner wall of the first slide groove 707, so that the three sliders 705 can be driven to return to their original positions by the second spring 713, that is, the three sealing plates 708 are released from the sealing state and automatically reset, so as to automatically drive the weighing component to reset and open the blocking component after the extraction is completed, so as to meet the needs of gas extraction, ensure the effectiveness of gas extraction, optimize the entire exhaust process, and ensure that the gas can be fully released.

[0044] As described above, when the ethylenediamine raw material is vaporized, the clamp rod 803 and the tension spring 804 can cooperate with each other so that when the closing plate 708 is closed, the closing state of the closing plate 708 can be maintained, thereby preventing gas leakage during extraction and discharge, ensuring the purity and efficiency of gas extraction, and automatically driving the weighing component to reset and open the sealing component after the extraction is completed, meeting the needs of gas extraction, ensuring the effectiveness of gas extraction, optimizing the entire exhaust process, ensuring that the gas can be fully released, and helping to ensure the quality of the vaporized product of the equipment.

[0045] Embodiment 3: Based on the above embodiment, an auxiliary cleaning component 9 is provided on the outer wall of the connecting rod 6 .

[0046] Furthermore, the auxiliary cleaning component 9 includes a second connecting ring 901, an outer wall of the connecting rod 6 is provided with a second annular groove 902 at equal distances corresponding to the second connecting ring 901, and the inner wall of the second connecting ring 901 rotates in fit with the inner wall of the second annular groove 902, an outer wall of the side where the two heat insulation plates 4 are close to each other is fixedly connected with a support tube 11, and a spiral groove 12 is correspondingly penetrated through the outer wall of the support tube 11, a cleaning rod 903 is fixedly connected to the outer wall of one side of the connecting ring 901, and the outer wall of the cleaning rod 903 slides in fit with the inner wall of the spiral groove 12, and a through groove 904 is penetrated through the other end of the cleaning rod 903 corresponding to the conveying pipe 5.

[0047] In this embodiment, during the lifting cycle of the connecting rod 6, the outer wall of the connecting rod 6 is provided with an annular groove 902 at an equal distance corresponding to the connecting ring 901, and the inner wall of the connecting ring 901 is fitted and rotated with the inner wall of the annular groove 902, and the outer wall of the side where the two heat insulation plates 4 are close to each other is fixedly connected with the support cylinder 11, and the outer wall of the support cylinder 11 is correspondingly penetrated with a spiral groove 12, and the outer wall of one side of the connecting ring 901 is fixedly connected with a cleaning rod 903, and the outer wall of the cleaning rod 903 is fitted and slid with the inner wall of the spiral groove 12, and the other end of the cleaning rod 903 is penetrated with a corresponding conveying pipe 5. The through groove 904 is fixedly connected with a cleaning brush plate 905 on the inner wall thereof, and the bristles on the inner wall of the cleaning brush plate 905 are pressed against the outer wall of the conveying pipe 5, so that when the connecting rod 6 is lifted and moved, the cleaning rod 903 can be restricted by the annular groove 902, so that the cleaning rod 903 can slide on the outer wall of the conveying pipe 5 in cooperation with the spiral groove 12, and then the outer wall of the conveying pipe 5 can be cleaned by multiple cleaning brush plates 905, so as to keep the conveying pipe 5 clean and avoid the appearance of scale and other substances covering the outer wall of the conveying pipe 5, thereby ensuring the effective transfer of heat during the heat exchange process and reducing energy consumption.

[0048] As described above, when the ethylenediamine raw material is vaporized, during the lifting and lowering process of the connecting rod 6, the spiral groove 12 and the cleaning rod 903 can cooperate to drive multiple cleaning brush plates 905 to clean the outer wall of the conveying pipe 5, keep the conveying pipe 5 clean, and avoid the appearance of scale and other substances covering the outer wall of the conveying pipe 5, which directly leads to a reduction in the heat exchange contact area, thereby ensuring the effective transfer of heat during the heat exchange process, which not only reduces energy consumption but also helps to improve the overall production efficiency of the equipment.

[0049] Working principle: When the ethylenediamine raw material is vaporized, the ethylenediamine raw material is first transported to the transport pipe 5 through the raw material pipe 13 to move from the bottom to the top of the heat exchange tube 1, and then high-temperature steam is introduced from the steam pipe 14 to the top of the heating channel 3, and the high-temperature steam is circulated from the upper part to the lower part of the heating channel 3 through the discharge pipe 15 located at the bottom of the heating channel 3, thereby extending the heating path and making the ethylenediamine and the heating steam flow relative to each other;

[0050] Then, the vaporized ethylenediamine gas will be continuously introduced into the discharge cylinder 2 through the delivery pipe 5. At this time, the weighing plate 701 can be lifted up by the increasing ethylenediamine gas, and then the connecting rod 6 can be synchronously driven to rise when the weighing plate 701 rises, so that the connecting rod 6 can synchronously drive the connecting ring 1 703 to rise by means of the annular groove 1 702. When the connecting ring 1 703 rises, the three separated closing plates 708 can be driven to approach each other through the three hinged driving rods 704. When the weighing plate 701 rises to a certain height, that is, when a certain content is stored in the discharge cylinder 2, the three closing plates 708 will merge accordingly, and then the remaining gas that is still vaporizing and rising can be sealed. At this time, a certain amount of ethylenediamine gas in the discharge cylinder 2 is extracted and discharged through the discharge pipe 10, so that the amount of vaporized ethylenediamine discharged each time meets the set standard.

[0051] Then, during the merging process of the three closing plates 708, the slider 705 synchronously drives the fixing column 714 to move. When the three closing plates 708 are merged, the fixing column 714 will be inserted into the through hole 715, so that the fixing column 714 first uses the inclined surface to push the two clamping rods 803 apart, and when it stops, the tension spring 804 can drive the clamping rod 803 to merge again so that the clamping block 805 can be inserted into the clamping groove 716, thereby maintaining the closed state of the closing plates 708 and preventing gas leakage during extraction and discharge;

[0052] Then, when the gas is extracted and discharged, as the gas in the discharge cylinder 2 decreases, the elastic force of the spring 1 712 will drive the weighing plate 701 to continuously descend and reset. At this time, the connecting ring 1 703 will slide relatively on the inner wall of the ring groove 1 702 to maintain the current height, that is, to maintain the closed state of the closing plate 708. When the gas in the discharge cylinder 2 is low to a certain level, that is, when the weighing plate 701 is about to descend and reset, the trigger rod 809 is driven by the connecting rod 6 to insert into the slot 810 and squeeze the guide inclined groove 811, so that the three slide bars 807 move in the direction of the connecting rod 6. At this time, the connecting block 806 can drive the two clamping rods 803 to separate through the sliding column 813, so that the card block 805 is disengaged from the card slot 716, so that the three sliders 705 can be driven back to the original position by the spring 2 713, even if the three closing plates 708 are released from the closed state and automatically reset, so as to automatically drive the weighing component to reset and open the blocking component after the extraction is completed, so as to meet the needs of gas extraction.

[0053] Then, when the connecting rod 6 is lifted and lowered, the cleaning rod 903 can be restricted by the annular groove 902, so that the cleaning rod 903 can cooperate with the spiral groove 12 to slide on the outer wall of the conveying pipe 5, and then the outer wall of the conveying pipe 5 can be cleaned by multiple cleaning brush plates 905 to keep the conveying pipe 5 clean and avoid the appearance of scale and other substances covering the outer wall of the conveying pipe 5, thereby ensuring the effective transfer of heat during the heat exchange process and reducing energy consumption.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis, comprising a heat exchange cylinder (1), a raw material pipe (13), a steam pipe (14), and a discharge pipe (15), characterized in that: The top of the heat exchange cylinder (1) is fixedly connected to a discharge cylinder (2), and a heating channel (3) is fixedly installed on the inner wall of the heat exchange cylinder (1), and a heat insulation board (4) is fixedly connected to the inner wall of the heat exchange cylinder (1) at an equal distance and symmetrically corresponding to the heating channel (3), and a conveying pipe (5) is fixedly connected to the side wall of the two heat insulation boards (4) corresponding to the heating channel (3), and a connecting rod (6) is slidably connected to the inner center of one of the heat insulation boards (4); The outer wall of the connecting rod (6) is provided with a weighing and blocking component (7) for weighing and blocking the vaporized ethylenediamine gas when the ethylenediamine raw material is vaporized, so that the amount of vaporized ethylenediamine discharged each time meets the set standard; The outer wall of the connecting rod (6) is provided with a retention discharge component (8) to block the remaining gas when discharging ethylenediamine gas, thereby preventing gas leakage during extraction and discharge; The outer wall of the connecting rod (6) is provided with an auxiliary cleaning component (9) to clean the outer wall of the delivery pipe (5) to prevent scale and other substances from covering the outer wall of the delivery pipe (5).

2. The vaporization equipment for preparing ethylenediamine, a raw material for piperazine synthesis, according to claim 1, characterized in that: The weighing blocking component (7) comprises a weighing pan (701), and the outer wall of the weighing pan (701) is fitted and slidably connected to the inner wall of the discharge cylinder (2), the top of the connecting rod (6) is fixed to the bottom of the weighing pan (701), the top outer wall of the connecting rod (6) is provided with an annular groove (702), and the inner wall of the annular groove (702) is fitted and slidably connected with a connecting ring (703), the outer wall of the connecting ring (703) is hinged with a driving rod (704) at an equal distance, and the other end of the driving rod (704) is hinged with a sliding block (705), the outer wall of the sliding block (705) is provided with a bracket (706), and the bracket (706) is provided with a support. 06) is fixed to the inner wall of the discharge cylinder (2), a slide groove (707) is provided through the corresponding slider (705) inside the bracket (706), and the outer walls on both sides of the slider (705) slide in contact with the inner wall of the slide groove (707), the bottom of the slider (705) is fixedly connected with a closing plate (708), and a groove (709) is provided on the outer wall of the closing plate (708) facing the connecting rod (6), the bottom of the closing plate (708) slides in contact with the bottom inner wall of the discharge cylinder (2), and the top of the closing plate (708) slides in contact with the bottom of the bracket (706).

3. A vaporization device for preparing ethylenediamine, a raw material for piperazine synthesis, according to claim 2, characterized in that: The inner wall of the discharge cylinder (2) is symmetrically provided with a second slide groove (710); the outer wall of the weighing pan (701) is symmetrically fixedly connected to a limit block (711), and the outer wall of the limit block (711) slides in contact with the inner wall of the second slide groove (710); the top of the limit block (711) is fixedly connected with a spring one (712), and the other end of the spring one (712) is fixedly connected to the inner wall of the second slide groove (710); the outer wall of the slider (705) on one side facing the connecting rod (6) is fixedly connected with a spring two (713), and the other end of the spring two (713) is fixedly connected to the inner wall of the first slide groove (707); the top of the discharge cylinder (2) is fixedly installed with a discharge pipe (10), and one end of the discharge pipe (10) is fixed to the top of the weighing pan (701).

4. The vaporization equipment for preparing ethylenediamine as a raw material for piperazine synthesis according to claim 3, characterized in that: The outer wall of the sliding block (705) on one side facing the connecting rod (6) is fixedly connected with a fixing column (714) corresponding to the stop discharge component (8); the inner wall of the sliding groove (707) is provided with a through hole (715) corresponding to the fixing column (714); the outer wall of the fixing column (714) slides in contact with the inner wall of the through hole (715); and the outer wall of the fixing column (714) on one end facing the connecting rod (6) is symmetrically provided with a slot (716) corresponding to the stop discharge component (8).

5. The vaporization equipment for preparing ethylenediamine, a raw material for piperazine synthesis, according to claim 4, characterized in that: The stop discharge component (8) includes a bracket 2 (801), and one end of the bracket 2 (801) is fixedly connected to the outer wall of the bracket 1 (706) facing the connecting rod (6), the inner wall of the bracket 2 (801) is fixedly connected to the shaft column (802), and the outer wall of the shaft column (802) is equidistantly connected to the clamping rod (803), the outer wall on the side where the two clamping rods (803) are close to each other is fixedly connected to a tension spring (804), and one end of the clamping rod (803) facing the fixed column (714) is in the shape of an inclined surface, the outer wall on the side where the two clamping rods (803) are close to each other is fixedly connected to a clamping block (805) corresponding to the clamping groove (716), and the side wall of the clamping block (805) facing the fixed column (714) is in the shape of an inclined surface.

6. The vaporization equipment for preparing ethylenediamine, a raw material for piperazine synthesis, according to claim 5, characterized in that: The inner wall of the second bracket (801) is fitted and slidably connected with a connecting block (806), and the outer wall of the connecting block (806) on one side facing the connecting rod (6) is fixedly connected with a sliding rod (807), and the other end of the sliding rod (807) passes through the interior of the second bracket (801) and is fixedly connected with a fixing block (808), and the outer wall of the connecting rod (6) is fixedly connected with a trigger rod (809) at an equal distance, and the top of the fixing block (808) is penetrated by a corresponding trigger rod (809). There is a slot (810), and the inner wall of the slot (810) is provided with a guiding inclined groove (811), the outer wall of the connecting block (806) on one side away from the connecting rod (6) is symmetrically fixedly connected with a pull rod (812), and the top of the pull rod (812) is fixedly connected with a sliding column (813), the bottoms of the two clamping rods (803) correspond to the sliding columns (813) and are penetrated by a sliding groove three (814), and the outer wall of the sliding column (813) and the inner wall of the sliding groove three (814) are fitted and slidable.

7. The vaporization equipment for preparing ethylenediamine, a raw material for piperazine synthesis, according to claim 6, characterized in that: The auxiliary cleaning component (9) comprises a second connecting ring (901), an outer wall of the connecting rod (6) is provided with a second annular groove (902) at an equal distance corresponding to the second connecting ring (901), and the inner wall of the second connecting ring (901) rotates in close contact with the inner wall of the second annular groove (902), a support tube (11) is fixedly connected to the outer wall of the two heat insulation plates (4) on one side thereof, and a spiral groove (12) is correspondingly penetrated through the outer wall of the support tube (11), a cleaning rod (903) is fixedly connected to the outer wall of one side of the connecting ring (901), and the outer wall of the cleaning rod (903) slides in close contact with the inner wall of the spiral groove (12), and the other end of the cleaning rod (903) is provided with a through groove (904) corresponding to the conveying pipe (5).

8. The vaporization equipment for preparing ethylenediamine, a raw material for piperazine synthesis, according to claim 7, characterized in that: The inner wall of the through groove (904) is fixedly connected with a cleaning brush plate (905), and the inner wall bristles of the cleaning brush plate (905) are pressed against the outer wall of the conveying pipe (5).

9. The vaporization equipment for preparing ethylenediamine, a raw material for piperazine synthesis, according to claim 1, characterized in that: The raw material pipe (13) is fixedly mounted on a side wall of the bottom of the heat exchange tube (1), the steam pipe (14) is fixedly mounted on a side wall of the top of the heat exchange tube (1), and the discharge pipe (15) is fixedly mounted on a bottom of one side of the heat exchange tube (1).

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