A distillation apparatus for the preparation of ethyl 3-ethoxypropionate

Abstract

This application relates to the field of distillation apparatus and discloses a distillation apparatus for the preparation of ethyl 3-ethoxypropionate, comprising: a chassis, which serves as a basic connecting component of the equipment and provides installation positions for other structures; a flow path heating mechanism, installed on the top left side of the chassis, for improving the heating and distillation efficiency of ethyl 3-ethoxypropionate; a distillation column is fixedly installed at the top of the flow path heating mechanism, and several trays are installed equidistantly from top to bottom inside the distillation column, the top of the distillation column being connected to a condensation mechanism via a pipeline for conducting the output distillation vapor; a fractionator is fixedly installed on the right side of the flow path heating mechanism. Through the flow path heating mechanism, condensation mechanism, liquid-solid flow mechanism, and exhaust mechanism, the internal solution preheating rate is accelerated, the internal mixing and heating efficiency is improved, while the condenser tubes continuously in contact with the vapor exhaust port are protected, reducing the damage rate and the economic cost of replacement.

Description

Technical Field

[0001] This invention relates to the field of distillation apparatus, specifically a distillation apparatus for the preparation of ethyl 3-ethoxypropionate. Background Technology

[0002] EEP solvent (ethyl 3-ethoxypropionate) is a low-volatility ether ester. Due to its ether ester group, linear structure, and propionyl group at the molecular center, this material possesses properties not found in other solvents, such as slow evaporation rate, resistance to solvent bursting in baking applications, high solubility for a wide range of polymers, low solution viscosity (relative to its evaporation rate), good solvent release properties in coatings, and good flow and uniform coating properties in a wide range of coatings. Furthermore, EEP solvent also has the special functions of moderate odor, low surface tension, high resistivity, and prevention of silver powder coarsening and blackening. It also has a specific effect of preventing sedimentation in the use of aluminum silver paste.

[0003] Distillation utilizes the differences in volatility of components in a mixture. Through the reflux of the liquid and gas phases, the gas and liquid phases are brought into multi-stage contact in opposite directions. Driven by thermal energy and constrained by phase equilibrium, the more volatile components (lighter components) continuously transfer from the liquid phase to the gas phase, while the less volatile components migrate from the gas phase to the liquid phase, thus continuously separating the mixture. This process is called distillation.

[0004] Existing distillation apparatuses for the preparation of ethyl 3-ethoxypropionate generally employ external reboilers or internal heating coils to heat the materials, resulting in high thermal efficiency and convenient operation. However, the preheating of the internal solution during the distillation stage is time-consuming, and the efficiency of internal mixing and heating is low. Furthermore, the protection of the condenser tubes is inadequate, especially those in continuous contact with the steam outlet, which suffer significant damage. This damage cannot be evenly distributed across all condenser tubes, increasing the economic cost of replacement.

[0005] Based on the above analysis, the present invention provides a high-efficiency distillation apparatus for ethyl 3-ethoxypropionate that can accelerate the preheating rate and protect the life of the condenser tube, thereby overcoming the shortcomings of the prior art. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a distillation apparatus for the preparation of ethyl 3-ethoxypropionate. This solves the problems of existing distillation apparatuses for the preparation of ethyl 3-ethoxypropionate, which suffer from time-consuming preheating of the internal solution during the distillation stage, low efficiency in internal mixing and heating, and inadequate protection of the condenser tubes, particularly those in continuous contact with the steam exhaust port, resulting in significant damage that cannot be evenly distributed across all tubes and increased replacement costs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a distillation apparatus for the preparation of ethyl 3-ethoxypropionate, comprising:

[0008] The chassis serves as the basic connecting component for the equipment and provides mounting locations for other structures.

[0009] A flow path heating mechanism, installed on the top left side of the chassis, is used to improve the heating and distillation efficiency of ethyl 3-ethoxypropionate.

[0010] A distillation column is fixedly installed at the top of the flow path heating mechanism. Several trays are installed at equal intervals from top to bottom inside the distillation column. The top of the distillation column is connected to the condensation mechanism through a pipeline for conducting the output distillation vapor.

[0011] A fractionator is fixedly installed on the right side of the flow path heating mechanism. A reflux pump is fixedly installed on the left side of the bottom of the fractionator, and the inlet of the reflux pump is connected to the bottom of the fractionator through a pipeline. The outlet of the reflux pump is connected to the upper left side of the flow path heating mechanism through a pipeline to maintain the liquid reflux state. A reboiler is fixedly installed on the left side of the flow path heating mechanism for repeated heating and cycling of ethyl 3-ethoxypropionate.

[0012] A condensing mechanism, installed at the top of the fractionator, is used to condense the steam and circulate cooling water for cooling, and to rotate the condenser tubes to prevent a single condenser tube from being continuously heated and damaged.

[0013] The liquid flow mechanism, which is installed on the top right side of the chassis, is used to store the distillate and to drive intermittent liquid flow, using the flow force to squeeze the air bladder to expel gas.

[0014] An exhaust mechanism, installed at the rear end of the fractionator, is used to receive exhaust gas from the liquid flow mechanism and to use the gas for cooling the outer shell after the flow path heating mechanism has been in operation.

[0015] Preferably, the flow path heating mechanism includes a tower box, a drive motor is fixedly installed at the bottom of the tower box, the output end of the drive motor is fixedly connected to one end of the diamond-shaped paddle, the other end of the diamond-shaped paddle passes through the bottom of the tower box and is fixedly connected to the bottom end of the bottom cover, a hollow cylinder is fixedly connected to the top of the bottom cover, a top cover is fixedly connected to the top of the hollow cylinder, the top of the top cover is fixedly connected to one end of the horizontal flow slurry, the other end of the horizontal flow slurry is rotatably connected to the middle of the bottom end of the cylinder plate, the cylinder plate is fixedly installed on the upper middle of the inner side of the tower box, and a feed inlet is fixedly installed on the upper middle of the left side of the tower box.

[0016] Preferably, a pyramidal block is fixedly installed at equal intervals on the opposite sides of the bottom cover and the top cover. A vertical column is fixedly installed on the middle of the outer side of each pyramidal block. A heating resistance wire is fixedly installed on the outer side of each vertical column. A hydraulic rod is fixedly installed on the inner wall of the bottom end of the bottom cover. A platform block is fixedly installed on the telescopic end of the hydraulic rod.

[0017] Preferably, four guide plates are equidistantly slidably connected to the outer side of the hollow cylinder. Side blocks are fixedly connected to the left and right sides of the inward side of each guide plate. A wall extension column is slidably connected to the middle of each side block. The outward side of each wall extension column is fixedly connected to the inner wall of the middle part of the hollow cylinder. One end of each side block is fixedly connected to the outward side of each spring. The other end of each spring is fixedly connected to the inner wall of the middle part of the hollow cylinder. A number of large holes are equidistantly arranged on the outer side wall of the guide plate, and a number of small holes are equidistantly arranged on the inner side wall of the guide plate.

[0018] Preferably, the condensation mechanism includes an extension platform, a main steam cylinder is fixedly connected to the front end of the extension platform, condensation auxiliary cylinders are fixedly installed on both the left and right sides of the main steam cylinder, external gear rings are rotatably connected to the inner and outer walls of the condensation auxiliary cylinders, the inner walls of the external gear rings are fixedly connected to the outer walls of the sealing disc, a plurality of insertion pipes are fixedly installed equidistantly around the middle of the sealing disc, the middle parts of the insertion pipes on the left and right sides are respectively sleeved with the left and right ends of the condenser tube, an outer sleeve ring is slidably connected to the left and right sides of the outer side of the condenser tube, the inner wall of the outer sleeve ring on the outward side is threadedly connected to the outer wall of the insertion pipe on the inward side, a wall block is fixedly connected to the middle of the front end of the main steam cylinder, a double-headed motor is fixedly installed on the middle of the inner side of the wall block, connecting rods are fixedly installed on the left and right output ends of the double-headed motor, gears are fixedly installed on the outward side of the connecting rods, and the rear ends of the gears are meshed with the external gear rings.

[0019] Preferably, a circulation pump is fixedly installed at the middle of the rear end of the extension platform. The outlet of the circulation pump is connected to the upper rear end of the left and right condensing auxiliary cylinders through a first diverter pipe. The inlet of the circulation pump is connected to the lower rear end of the water tank through a pipe. The water tank is fixedly installed at the lower rear end of the extension platform. A heat absorption perforated plate is fixedly installed at the upper end of the water tank. The upper left and right sides of the water tank are both connected to one end of a second diverter pipe, and the other end of the second diverter pipe is connected to the bottom end of the condensing auxiliary cylinder.

[0020] Preferably, the liquid flow mechanism includes a storage tank, a main rod slidably connected to the middle of the storage tank, a filter screen fixedly connected to the bottom end of the main rod, a movable disk fixedly installed at the top end of the main rod, electric telescopic rods fixedly installed on the left and right sides of the top end of the storage tank, the telescopic ends of the electric telescopic rods being fixedly installed on the left and right sides of the bottom end of the movable disk, fixed rods fixedly installed on the front and rear sides of the top end of the storage tank, the top ends of the fixed rods being fixedly connected to the front and rear sides of the bottom end of the pressure plate, the front and rear sides of the movable disk being slidably connected to the fixed rods, an airbag fixedly installed at the top end of the movable disk, an air inlet fixedly installed on the right side of the top end of the airbag, and an air outlet fixedly installed on the left side of the top end of the airbag.

[0021] Preferably, the exhaust mechanism includes an air-holding box, a cylinder is fixedly installed at the bottom of the air-holding box, a pusher is fixedly installed at the telescopic end of the cylinder, the left side of the pusher passes through the right side of the air-holding box and is fixedly connected to the right side of the box plate, a box plate is slidably connected inside the air-holding box, the left side of the air-holding box is connected to one end of the air outlet pipe, the other end of the air outlet pipe is connected to the rear end of the air diffuser sleeve, a plurality of exhaust holes are evenly distributed on the inner wall of the air diffuser sleeve, the top of the air-holding box is connected to one end of the air inlet pipe, and the other end of the air inlet pipe is connected to the air outlet plug.

[0022] Preferably, the top of the distillation column is connected to the top left side of the main steam cylinder via a pipeline, the bottom left and right liquid outlets of the main steam cylinder are connected to the top left and right sides of the fractionator, the bottom right liquid outlet of the fractionator is connected to the upper left side of the storage tank via a pipeline, a gas box is fixedly installed at the rear end of the fractionator, and an extension platform is fixedly installed at the rear top of the fractionator.

[0023] Preferably, a drive motor is fixedly connected to the bottom left side of the chassis, a tower box is fixedly installed on the top left side of the chassis, a gas dissipation sleeve is provided on the outside of the tower box, a distillation column is fixedly installed on the top of the tower box, a liquid storage tank is fixedly installed on the top right side of the chassis, a discharge port is fixedly installed on the lower right side of the liquid storage tank, and vacuum pumps are fixedly installed on both the front and rear sides of the top center of the chassis. The vacuum pumps are connected to the upper center of the front and rear sides of the liquid storage tank through pipelines.

[0024] Working principle: The distillation apparatus for the preparation of ethyl 3-ethoxypropionate provided by this invention is used. The specific operating steps are as follows:

[0025] Step 1: First, ethyl 3-ethoxypropionate raw material is fed into the tower through the feed inlet. Then, the flow path heating mechanism is used for heating and evaporation. The drive motor rotates the entire rotating structure, consisting of the diamond-shaped impeller, bottom cover, hollow cylinder, top cover, and horizontal impeller. The large agitation of the upper horizontal impeller combined with the smaller agitation of the lower diamond-shaped impeller creates a tornado-like agitation. The guide plates on the hollow cylinder also agitate the ethyl 3-ethoxypropionate raw material in the middle, utilizing the large-hole outlets on the guide plates for high-flow-rate agitation. Combined with the heating resistance wires on the bottom and top covers for stirring and heating in the middle, the ethyl 3-ethoxypropionate raw material heats up rapidly, radiating heat to both upper and lower layers, improving heating efficiency and uniform heating. Furthermore, by utilizing the hydraulic rods within the space formed by the bottom cover, hollow cylinder, and top cover, the extension of the hydraulic rods drives the platform block to move, and compresses the surrounding guide plates to continuously expand outward. The side fixing blocks connected to both sides of the guide plates slide outward on the wall extension columns, ensuring the stability of the guide plate movement. As the platform block continues to rise, the guide plates expand to their maximum extent, at which point the small outlet holes on their inner side are exposed. Combined with the large outlet holes and small outlet holes, a vortex with a large outer flow diameter and a small inner flow diameter is formed inside. In addition, there are heating resistance wires at the top and bottom of adjacent guide plates, further improving the heating rate and heating effect. Therefore, the flow diameter heating mechanism can be divided into two modes, which can be changed according to the usage requirements. Furthermore, the reboiler can also be used to better heat the steam and promote its ascent.

[0026] Step 2: Ethyl 3-ethoxypropionate, after heating and stirring, generates hot steam. This steam is then transported to the condenser via the distillation column and its top piping, where it is condensed to form a distilled liquid. This liquid is then temporarily stored in the fractionator through the outlet of the main steam cylinder. The cooling water in the condenser can be replaced, primarily through the following process: A circulating pump draws cooling water from the tank and directs it through the first distributor pipe into the left and right condenser sub-cylinders. The condenser sub-cylinders and the sealing disc form a closed side cavity, with multiple connectors at the outlet. Once filled, the cooling water flows into the condenser tubes through the connectors, filling the entire tube. When steam enters the main steam cylinder, it exchanges heat with the condenser tubes, heating the cooling water. At this point, the valve of the second distributor pipe is opened, and the cooled water, after heat exchange, continuously flows into the tank and through the heat absorption perforated plate at the top of the tank. For heat absorption and cooling, an external fan can be connected to blow heat off the outside of the heat absorption perforated plate, thereby lowering the temperature of the cooling water. The cooled water is then pumped by a circulating pump and supplied to the condenser auxiliary cylinder through the first branch pipe to participate in the heat exchange with steam. Through the continuous input and output of water, the water flow achieves the effect of water flow, quickly carrying away and dissipating heat, improving the heat exchange effect. Furthermore, by using a double-headed motor to drive the connecting rod to rotate, the connecting rod drives the gear to rotate, thereby driving the meshing outer gear ring and the internal connecting sealing disc of the outer gear ring to rotate synchronously. This changes the orientation of the condenser tubes connected to the outer ring, avoiding continuous contact between a single condenser tube and the steam inlet. If the position does not change for a long time, it is easy to damage the condenser tube and reduce its service life. Therefore, by changing the orientation and adjusting the position of the condenser tubes, each condenser tube will contact the steam inlet, reducing the contact time of a single condenser tube and extending the service life of each condenser tube.

[0027] Step 3: After the distillate enters the fractionator and a certain liquid level is observed, start the reflux pump and adjust the reflux flow meter to stabilize the liquid level in the fractionator to a certain level. Then, by using the reflux pump connected to the distillation column through the pipeline, a portion of the distillate is used as reflux liquid to maintain a total reflux state and achieve gas-liquid balance in the distillation.

[0028] Step 4: Another portion of the distillate, as the product, is transported via pipeline to a liquid-material flow mechanism for storage. Since the distillate stored in this mechanism is not used or transported, it remains in a static state. To ensure its fluidity, an electric telescopic rod drives a moving disc upwards. This causes the connected main rod to move the filtrate screen within the storage tank, thus filtering the distillate and maintaining its activity. Simultaneously, the moving disc slides along a fixed rod, ensuring high stability and continuous upward movement. The plate causes the air bladders on it to continuously contact the pressure plate, thus creating compression. The compressed air bladders expel the air through the outlet plug and are transported to the gas holding box through the connection with the air inlet pipe. The cylinder drives the air pusher to move to the left, which causes the air pusher and its connected box plate to compress the air entering from the left side in the gas holding box. The air is then transported to the gas diffuser sleeve through the outlet pipe, and the gas diffuser sleeve exhausts the air through its holes, thereby reducing the temperature of the outer shell of the tower. This method is suitable for cooling the outer shell of the tower after distillation.

[0029] This invention provides a distillation apparatus for the preparation of ethyl 3-ethoxypropionate. It has the following beneficial effects:

[0030] 1. This invention uses a drive motor to rotate the entire rotating structure, consisting of a rhomboid paddle, bottom cover, hollow cylinder, top cover, and horizontal paddle. The upper horizontal paddle experiences large agitation, while the lower rhomboid paddle experiences small agitation, creating a tornado-like agitation state. This, combined with the large-hole outlets in the guide plates on the hollow cylinder, achieves high-flow-rate agitation. Heating resistance wires distributed between the guide plates further heat the ethyl 3-ethoxypropionate raw material, causing it to heat up rapidly and radiate to the upper and lower layers, improving heating efficiency and uniform heating. Furthermore, the extension of the hydraulic rod causes the platform block to compress the surrounding guide plates outward, exposing the small-hole outlets on their inner sides. Combined with the large-hole outlets, this creates a vortex with a large outer diameter and a small inner diameter, further enhancing the heating rate and heating effect.

[0031] 2. This invention utilizes a dual-head motor to drive a connecting rod to rotate, which in turn drives a gear to rotate, thereby causing the meshing outer gear ring and the internal sealing disc of the outer gear ring to rotate synchronously. This changes the orientation of the condenser tubes connected to the outer ring, preventing a single condenser tube from continuously contacting the steam inlet and avoiding damage to the condenser tube and reduced service life due to prolonged unchanging position. Therefore, by changing the orientation and adjusting the position of the condenser tubes, each condenser tube will contact the steam inlet, reducing the contact time of a single condenser tube and extending the service life of each condenser tube.

[0032] 3. This invention uses an electric telescopic rod to drive the moving disc upwards. On one hand, this causes the connected main rod to move the filtrate screen in the storage tank, filtering the distillate and ensuring its liquid activity. On the other hand, it causes the airbag on the moving disc to contact and compress with the pressure plate. The compressed air is delivered to the gas box through the air outlet plug. The air is then pushed into the air diffuser sleeve by the cylinder through the pusher plate. The air is then vented through the holes on the diffuser sleeve, reducing the temperature of the outer shell inside the tower. This invention is suitable for cooling the outer shell of the tower after distillation. Attached Figure Description

[0033] Figure 1 This is a perspective view of the present invention;

[0034] Figure 2 This is a perspective view of the invention from another angle;

[0035] Figure 3 This is a perspective view of the invention from another angle;

[0036] Figure 4 This is a bottom view of the present invention;

[0037] Figure 5 This is a schematic diagram of the internal structure of the tower box of the present invention;

[0038] Figure 6 This is a schematic diagram of the disassembled structure of the hollow cylinder in this invention;

[0039] Figure 7 This is a schematic diagram of the internal structure of the hollow cylinder in this invention;

[0040] Figure 8 This is a schematic diagram showing the position and structure of the condensation mechanism of the present invention;

[0041] Figure 9 This is a schematic diagram of the position and structure of the condensation mechanism of the present invention from another perspective;

[0042] Figure 10 This is a schematic diagram of the internal structure of the steam cylinder of the present invention;

[0043] Figure 11 This is a schematic diagram of the location and structure of the water tank of the present invention;

[0044] Figure 12 This is a schematic diagram of the structure of the condenser tube of the present invention;

[0045] Figure 13 This is a schematic diagram of the position and structure of the vacuum pump of the present invention;

[0046] Figure 14 This is a schematic diagram of the internal structure of the liquid storage tank of the present invention;

[0047] Figure 15 This is a schematic diagram of the exhaust mechanism of the present invention.

[0048] The components include: 1. Chassis; 2. Flow path heating mechanism; 201. Tower box; 202. Drive motor; 203. Diamond-shaped paddle; 204. Bottom cover; 205. Hollow cylinder; 206. Top cover; 207. Horizontal flow propeller; 208. Cylinder plate; 209. Conical block; 210. Vertical column; 211. Heating resistance wire; 212. Hydraulic rod; 213. Platform block; 214. Guide plate; 215. Side fixing block; 216. Wall extension column; 217. Spring; 218. Large orifice outlet; 219. Small orifice outlet; 3. Distillation column; 4. Condensation mechanism; 401. Extension platform; 402. Steam main cylinder; 403. Condensation auxiliary cylinder; 404. External toothed ring; 405. Sealing disc; 406. Condenser tube; 407. Outer ring; 408. Wall block; 4 9. Dual-head motor; 410. Connecting rod; 411. Gear; 412. Circulating pump; 413. First diverter; 414. Water tank; 415. Absorbent plate; 416. Second diverter; 417. Connecting pipe; 5. Distiller; 6. Reflux pump; 7. Reboiler; 8. Liquid flow mechanism; 801. Storage tank; 802. Main rod; 803. Filtration sieve; 804. Moving plate; 805. Electric telescopic rod; 806. Fixed rod; 807. Pressure plate; 808. Airbag; 809. Air inlet; 810. Air outlet; 9. Exhaust mechanism; 901. Air box; 902. Cylinder; 903. Air pusher; 904. Box plate; 905. Air inlet pipe; 906. Air outlet pipe; 907. Dissipation sleeve; 10. Vacuum pump. Detailed Implementation

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Please see the appendix Figure 1 - Appendix Figure 15This invention provides a distillation apparatus for the preparation of ethyl 3-ethoxypropionate, comprising: a chassis 1, which serves as a basic connecting component and provides installation positions for other structures; a flow path heating mechanism 2, installed on the top left side of the chassis 1, for improving the heating and distillation efficiency of ethyl 3-ethoxypropionate; a distillation column 3 is fixedly installed at the top of the flow path heating mechanism 2, with several trays evenly spaced from top to bottom inside the distillation column 3, the top of the distillation column 3 being connected to a condensation mechanism 4 via a pipeline for conducting the output distillation vapor; a fractionator 5 is fixedly installed on the right side of the flow path heating mechanism 2, and a reflux pump 6 is fixedly installed on the bottom left side of the fractionator 5, with its inlet connected to the bottom of the fractionator 5 via a pipeline, and its outlet connected to... The upper left side of the flow path heating mechanism 2 is connected to maintain the liquid reflux state. A reboiler 7 is fixedly installed on the left side of the flow path heating mechanism 2 for repeated heating and cycling of ethyl 3-ethoxypropionate. The condensing mechanism 4 is installed at the top of the fractionator 5 for condensing steam and circulating cooling water for cooling. It also rotates the condenser tube 406 to prevent the single condenser tube 406 from being continuously heated and damaged. The liquid flow mechanism 8 is installed on the top right side of the chassis 1 for storing distillate and promoting intermittent liquid flow, using the flow force to squeeze the gas bag 808 to exhaust gas. The exhaust mechanism 9 is installed at the rear end of the fractionator 5 for receiving the exhaust gas from the liquid flow mechanism 8 and using the gas for cooling the outer shell of the flow path heating mechanism 2 after operation.

[0051] Please see the appendix Figure 5 - Appendix Figure 7 In this embodiment, the flow path heating mechanism 2 includes a tower box 201. A drive motor 202 is fixedly installed at the bottom of the tower box 201. The output end of the drive motor 202 is fixedly connected to one end of the diamond-shaped paddle 203. The other end of the diamond-shaped paddle 203 passes through the bottom of the tower box 201 and is fixedly connected to the bottom of the bottom cover 204. A hollow cylinder 205 is fixedly connected to the top of the bottom cover 204. A top cover 206 is fixedly connected to the top of the hollow cylinder 205. The top of the top cover 206 is fixedly connected to one end of the horizontal flow slurry 207. The other end of the horizontal flow slurry 207 is rotatably connected to the middle of the bottom of the cylinder plate 208. The cylinder plate 208 is fixedly installed on the upper middle of the inner side of the tower box 201. A feed inlet is fixedly installed on the upper middle of the left side of the tower box 201. A pyramidal block 209 is fixedly installed at equal intervals on the opposite sides of the bottom cover 204 and the top cover 206. A vertical column 210 is fixedly installed on the outer middle of the pyramidal block 209. A heating resistance wire 211 is fixedly installed on the outer side of the vertical column 210. A hydraulic rod 212 is fixedly installed on the inner wall of the bottom end of the bottom cover 204. A platform block 213 is fixedly installed on the telescopic end of the hydraulic rod 212.

[0052] Specifically, ethyl 3-ethoxypropionate raw material is first fed into tower 201 through the feed inlet. Then, it is heated and evaporated using the flow path heating mechanism 2. The drive motor 202 is started to drive the entire rotating structure consisting of rhomboid paddle 203, bottom cover 204, hollow cylinder 205, top cover 206, and horizontal flow paddle 207 to rotate. The large agitation of the upper horizontal flow paddle 207, combined with the small agitation of the lower rhomboid paddle 203, forms a tornado-like agitation state. The guide plate 214 on the hollow cylinder 205 also agitates the ethyl 3-ethoxypropionate raw material in the middle. At this time, the large-hole outlet 218 on the guide plate 214 is used to perform high-flow agitation. The heating resistance wires 211 on the bottom cover 204 and top cover 206 are used to stir and heat the middle part, so that the ethyl 3-ethoxypropionate raw material is heated rapidly and then radiates to the upper and lower layers, improving heating efficiency and uniform heating effect.

[0053] Please see the appendix Figure 7 In this embodiment, four guide plates 214 are equidistantly slidably connected to the outer side of the hollow cylinder 205. Side fixing blocks 215 are fixedly connected to the left and right sides of the inward side of the guide plate 214. Wall extension columns 216 are slidably connected to the middle of the side fixing blocks 215. The outward side of the wall extension columns 216 is fixedly connected to the inner wall of the middle part of the hollow cylinder 205. The outward side of the side fixing blocks 215 is fixedly connected to one end of the spring 217. The other end of the spring 217 is fixedly connected to the inner wall of the middle part of the hollow cylinder 205. Several large holes 218 are equidistantly arranged on the outer side wall of the guide plate 214, and several small holes 219 are equidistantly arranged on the inner side wall of the guide plate 214.

[0054] Specifically, by utilizing the hydraulic rod 212 within the space formed by the bottom cover 204, hollow cylinder 205, and top cover 206, the extension of the hydraulic rod 212 drives the platform block 213 to move, and compresses the surrounding guide plates 214 to continuously expand outward. The side fixing blocks 215 connected to both sides of the guide plates 214 slide outward on the wall extension column 216, ensuring the stability of the guide plate 214's movement. As the platform block 213 continues to rise, the guide plates 214 expand to their maximum extent, at which point the small orifice outlet 219 on its inner side is exposed. Combined with the large orifice outlet 218 and the small orifice outlet 219, a vortex with a large outer diameter and a small inner diameter is formed inside. Furthermore, the upper and lower parts between adjacent guide plates 214 are heated by heating resistance wires 211, further improving the heating rate and effect. Therefore, the flow path heating mechanism 2 can be divided into two modes, which can be changed according to usage requirements. The reboiler 7 can also be used to better heat and allow steam to rise.

[0055] Please see the appendix Figure 8 - Appendix Figure 12In this embodiment, the condensing mechanism 4 includes an extension platform 401. A main steam cylinder 402 is fixedly connected to the front end of the extension platform 401. A secondary condensing cylinder 403 is fixedly installed on both the left and right sides of the main steam cylinder 402. An external toothed ring 404 is rotatably connected to the inner and outer walls of the secondary condensing cylinder 403. The inner walls of the external toothed ring 404 are fixedly connected to the outer walls of the sealing disc 405. A plurality of insertion pipes 417 are fixedly installed equidistantly around the center of the sealing disc 405. The middle parts of the insertion pipes 417 on the left and right sides are respectively connected to the left and right ends of the condensing pipe 406. The outer and left sides of the condenser tube 406 are slidably connected to each other. The inner wall of the outer side of the outer ring 407 is threadedly connected to the outer wall of the inner side of the insertion tube 417. The front end of the steam main cylinder 402 is fixedly connected to the wall block 408. The inner side of the wall block 408 is fixedly installed with a double-head motor 409. The left and right output ends of the double-head motor 409 are fixedly installed with connecting rods 410. The outer side of the connecting rod 410 is fixedly installed with gears 411. The rear end of the gears 411 is meshed with the outer gear ring 404.

[0056] Specifically, by using a dual-head motor 409 to drive the connecting rod 410 to rotate, the connecting rod 410 then drives the gear 411 to rotate, thereby causing the meshing outer gear ring 404 and the internal sealing disc 405 of the outer gear ring 404 to rotate synchronously. This changes the orientation of the condenser tube 406 connected to the outer ring 407, preventing a single condenser tube 406 from continuously contacting the steam inlet and remaining in the same position for a long time, which could easily damage the condenser tube 406 and reduce its service life. Therefore, by changing the orientation and adjusting the position of the condenser tube 406, each condenser tube 406 will contact the steam inlet, reducing the contact time of a single condenser tube 406 and extending the service life of each condenser tube 406.

[0057] Please see the appendix Figure 9 In this embodiment, a circulation pump 412 is fixedly installed at the middle of the rear end of the extension platform 401. The outlet of the circulation pump 412 is connected to the upper rear end of the left and right condensing auxiliary cylinders 403 through the first diversion pipe 413. The inlet of the circulation pump 412 is connected to the lower rear end of the water tank 414 through a pipe. The water tank 414 is fixedly installed at the lower rear end of the extension platform 401. A heat absorption perforated plate 415 is fixedly installed at the upper end of the water tank 414. The upper left and right sides of the water tank 414 are both connected to one end of the second diversion pipe 416. The other end of the second diversion pipe 416 is connected to the bottom end of the condensing auxiliary cylinder 403.

[0058] Specifically, ethyl 3-ethoxypropionate, after being heated and stirred, generates hot steam. This steam is then transported to the condensing unit 4 via the pipes at the top of the distillation column 3, where it is condensed to form a distilled liquid. This liquid is then temporarily stored in the fractionator 5 through the outlet of the main steam cylinder 402. The cooling water in the condensing structure of the condensing unit 4 can be replaced, primarily through the following process: A circulating pump 412 draws cooling water from the water tank 414 and inputs it into the left and right condensing auxiliary cylinders 403 via the first branch pipe 413. The condensing auxiliary cylinders 403 and the sealing disc 405 form a closed side cavity, with only multiple insertion pipes 417 at the outlet. Once the cooling water is full, it flows through the insertion pipes 417 into the condensing pipe 406. The steam flows inward, filling the entire condenser tube 406. When the steam enters the main steam cylinder 402, it exchanges heat with the condenser tube 406, causing the cooling water to heat up. At this time, the valve of the second branch pipe 416 is opened, and the cooled water after heat exchange is continuously discharged into the water tank 414. It absorbs heat and cools down through the heat absorption perforated plate 415 on the upper part of the water tank 414. Alternatively, an external fan can be connected to blow heat away from the outside of the heat absorption perforated plate 415, thereby lowering the temperature of the cooling water. The cooled water is then drawn by the circulating pump 412 and supplied to the condenser auxiliary cylinder 403 through the first branch pipe 413 to participate in the heat exchange of steam. Through the continuous input and output of water, the water flow achieves the effect of water flow, quickly carrying away and dissipating heat, thus improving the heat exchange effect.

[0059] Please see the appendix Figure 1 - Appendix Figure 15 In this embodiment, the top of the distillation column 3 is connected to the left side of the top of the steam main cylinder 402 through a pipeline. The liquid outlets on the left and right sides of the bottom of the steam main cylinder 402 are connected to the left and right sides of the top of the fractionator 5. The liquid outlet on the right side of the bottom of the fractionator 5 is connected to the upper left side of the liquid storage tank 801 through a pipeline. A gas box 901 is fixedly installed at the rear end of the fractionator 5. An extension platform 401 is fixedly installed at the rear of the top of the fractionator 5.

[0060] Specifically, once a certain liquid level is observed in the distillate entering the fractionator 5, the reflux pump 6 is started and the reflux flow meter is adjusted to stabilize the liquid level in the fractionator 5 to a certain level. Thus, by utilizing the function of the reflux pump 6 connected to the distillation column 3 through the pipeline, a portion of the distillate is used as reflux liquid to maintain a total reflux state and achieve gas-liquid balance in the distillation.

[0061] Please see the appendix Figure 13 - Appendix Figure 14In this embodiment, the liquid flow mechanism 8 includes a liquid storage tank 801. A main rod 802 is slidably connected to the middle of the liquid storage tank 801. A filter screen 803 is fixedly connected to the bottom end of the main rod 802. A movable disk 804 is fixedly installed at the top end of the main rod 802. Electric telescopic rods 805 are fixedly installed on the left and right sides of the top end of the liquid storage tank 801. The telescopic ends of the electric telescopic rods 805 are fixedly installed on the left and right sides of the bottom end of the movable disk 804, respectively. Fixed rods 806 are fixedly installed on the front and rear sides of the top end of the liquid storage tank 801. The top ends of the fixed rods 806 are fixedly connected to the front and rear sides of the bottom end of the pressure plate 807, respectively. The front and rear sides of the movable disk 804 are slidably connected to the fixed rods 806. An airbag 808 is fixedly installed at the top end of the movable disk 804. An air inlet 809 is fixedly installed on the right side of the top end of the airbag 808. An air outlet 810 is fixedly installed on the left side of the top end of the airbag 808.

[0062] Specifically, continuing from the above, another portion of the distillate, as a product, is transported by pipeline to the liquid flow mechanism 8 for storage. The distillate stored in the liquid flow mechanism 8 is in a static state when not in use or during transportation. To ensure the fluidity of the distillate, the moving plate 804 is raised by the electric telescopic rod 805. This causes the connected main rod 802 to move the filter screen 803 in the storage tank 801, thereby using the filter screen 803 to filter the distillate and ensure its activity. Simultaneously, the front and rear sides of the moving plate 804 slide on the fixed rod 806, ensuring high stability. Furthermore, the continuously rising moving plate 804 causes the air bladder 808 on it to continuously contact the pressure plate 807, resulting in compression. The compressed air bladder 808 releases air through the air outlet 810 and, through communication with the air inlet pipe 905, is transported to the gas container 901 for subsequent use.

[0063] Please see the appendix Figure 15 In this embodiment, the exhaust mechanism 9 includes an air box 901. A cylinder 902 is fixedly installed at the bottom of the air box 901. A pusher 903 is fixedly installed at the telescopic end of the cylinder 902. The left side of the pusher 903 passes through the right side of the air box 901 and is fixedly connected to the right side of the box plate 904. The box plate 904 is slidably connected inside the air box 901. The left side of the air box 901 is connected to one end of the exhaust pipe 906. The other end of the exhaust pipe 906 is connected to the rear end of the air diffuser sleeve 907. Several exhaust holes are evenly distributed on the inner wall of the air diffuser sleeve 907. The top of the air box 901 is connected to one end of the intake pipe 905. The other end of the intake pipe 905 is connected to the exhaust plug 810.

[0064] Specifically, the air delivered to the gas holder 901 is driven by the cylinder 902 to move the pusher 903 to the left, thereby causing the pusher 903 and its connected box plate 904 to compress the air entering from the left side in the gas holder 901. The air is then delivered to the gas diffuser sleeve 907 through the gas outlet pipe 906. The gas diffuser sleeve 907 then exhausts the gas through its holes, thereby reducing the temperature of the outer shell of the tower box 201. This method is suitable for cooling the outer shell of the tower box 201 after distillation.

[0065] Please see the appendix Figure 1 - Appendix Figure 15 In this embodiment, a drive motor 202 is fixedly connected to the bottom left side of the chassis 1, a tower box 201 is fixedly installed on the top left side of the chassis 1, a gas dissipation sleeve 907 is provided on the outside of the tower box 201, a distillation column 3 is fixedly installed on the top of the tower box 201, a liquid storage tank 801 is fixedly installed on the top right side of the chassis 1, a discharge port is fixedly installed on the lower right side of the liquid storage tank 801, and a vacuum pump 10 is fixedly installed on both the front and rear sides of the top middle of the chassis 1. The vacuum pump 10 is connected to the upper middle of the front and rear sides of the liquid storage tank 801 through pipelines.

[0066] Specifically, by using the trays in the distillation column 3 for gas-liquid separation, and by using the vacuum pump 10 to perform pre-cleaning of the liquid storage tank 801 and exhaust operations, a safe storage space is provided for the distilled liquid.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A distillation apparatus for the preparation of ethyl 3-ethoxypropionate, characterized in that, include: The chassis (1) serves as the basic connecting component for the equipment and provides an installation location for other structures; A flow path heating mechanism (2) is installed on the top left side of the chassis (1) to improve the heating distillation efficiency of ethyl 3-ethoxypropionate. The flow path heating mechanism (2) includes a tower box (201). A drive motor (202) is fixedly installed at the bottom of the tower box (201). The output end of the drive motor (202) is fixedly connected to one end of a rhomboid paddle (203). The other end of the rhomboid paddle (203) passes through the bottom of the tower box (201) and is fixedly connected to the bottom of the bottom cover (204). A hollow cylinder (205) is fixedly connected to the top of the bottom cover (204). A top cover (206) is fixedly connected to the top of the hollow cylinder (205). The top of the top cover (206) is connected to a horizontal flow propeller (207). The other end of the horizontal flow slurry (207) is rotatably connected to the middle of the bottom end of the cylinder plate (208). The cylinder plate (208) is fixedly installed on the upper middle of the inner side of the tower box (201). The upper middle of the left side of the tower box (201) is fixedly installed with a feed port. The bottom cover (204) and the top cover (206) are both fixedly installed with equidistant cone blocks (209) on opposite sides. The middle of the outer side of the cone blocks (209) is fixedly installed with vertical columns (210). The outer side of the vertical columns (210) is fixedly installed with heating resistance wires (211). The inner wall of the bottom end of the bottom cover (204) is fixedly installed with a hydraulic rod (212). The telescopic end of the hydraulic rod (212) is fixedly installed with a platform block (213). The top of the flow path heating mechanism (2) is fixedly installed with a distillation column (3). Inside the distillation column (3), several trays are installed at equal intervals from top to bottom. The top of the distillation column (3) is connected to the condensation mechanism (4) through a pipeline to conduct the output distillation vapor. A fractionator (5) is fixedly installed on the right side of the flow path heating mechanism (2). A reflux pump (6) is fixedly installed on the left side of the bottom end of the fractionator (5), and the inlet is connected to the bottom of the fractionator (5) through a pipeline. The outlet of the reflux pump (6) is connected to the upper left side of the flow path heating mechanism (2) through a pipeline to maintain the liquid reflux state. A reboiler (7) is fixedly installed on the left side of the flow path heating mechanism (2) for repeated heating and cycling of ethyl 3-ethoxypropionate. The condensing mechanism (4) is installed at the top of the fractionator (5) for condensing steam and circulating cooling water, and rotating the condenser tube (406) to prevent a single condenser tube (406) from being continuously heated and damaged. A liquid-material flow mechanism (8) is installed on the top right side of the chassis (1) for storing distillate and facilitating intermittent liquid flow. The liquid-material flow mechanism (8) includes a storage tank (801), a main rod (802) is slidably connected to the middle of the storage tank (801), a filter screen (803) is fixedly connected to the bottom end of the main rod (802), a movable disk (804) is fixedly installed at the top end of the main rod (802), and electric telescopic rods (805) are fixedly installed on both the left and right sides of the top end of the storage tank (801). The telescopic ends of the electric telescopic rods (805) are... The liquid storage tank (801) is fixedly installed on the left and right sides of the bottom of the movable plate (804). The top and front sides of the liquid storage tank (801) are fixedly installed with fixing rods (806). The top of the fixing rods (806) is fixedly connected to the bottom and front and rear sides of the pressure plate (807). The front and rear sides of the movable plate (804) are slidably connected with the fixing rods (806). The top of the movable plate (804) is fixedly installed with an air bag (808). The right side of the top of the air bag (808) is fixedly installed with an air inlet (809). The left side of the top of the air bag (808) is fixedly installed with an air outlet (810). The exhaust mechanism (9), which is installed at the rear end of the fractionator (5), is used to receive the exhaust gas from the liquid flow mechanism (8) and use the gas for the shell cooling treatment after the flow path heating mechanism (2) has been operated.

2. The distillation apparatus for preparing ethyl 3-ethoxypropionate according to claim 1, characterized in that, Four guide plates (214) are equidistantly slidably connected to the outer side of the hollow cylinder (205). Side blocks (215) are fixedly connected to the left and right sides of the inner side of the guide plate (214). Wall extension columns (216) are slidably connected to the middle of the side blocks (215). The outer side of the wall extension columns (216) is fixedly connected to the inner wall of the middle part of the hollow cylinder (205). The outer side of the side blocks (215) is fixedly connected to one end of the spring (217). The other end of the spring (217) is fixedly connected to the inner wall of the middle part of the hollow cylinder (205). Several large holes (218) are provided on the outer side wall of the guide plate (214). Several small holes (219) are equidistantly provided on the inner side wall of the guide plate (214).

3. The distillation apparatus for preparing ethyl 3-ethoxypropionate according to claim 2, characterized in that, The condensing mechanism (4) includes an extension platform (401). A steam main cylinder (402) is fixedly connected to the front end of the extension platform (401). Condensing auxiliary cylinders (403) are fixedly installed on both the left and right sides of the steam main cylinder (402). External toothed rings (404) are rotatably connected to the inner and outer walls of the condensing auxiliary cylinders (403). The inner walls of the external toothed rings (404) are fixedly connected to the outer walls of the sealing discs (405). Several insertion pipes (417) are fixedly installed equidistantly around the middle of the sealing discs (405). The middle parts of the insertion pipes (417) on the left and right sides are respectively sleeved with the left and right ends of the condensing pipes (406). The outer left and right sides of the condenser tube (406) are slidably connected with outer rings (407). The inner wall of the outer ring (407) on the outward side is threadedly connected to the outer wall of the insertion tube (417) on the inward side. The front middle of the steam cylinder (402) is fixedly connected with a wall block (408). The inner middle of the wall block (408) is fixedly installed with a double-head motor (409). The left and right output ends of the double-head motor (409) are fixedly installed with connecting rods (410). The outer side of the connecting rod (410) is fixedly installed with gears (411). The rear end of the gears (411) is meshed with the outer gear ring (404).

4. The distillation apparatus for preparing ethyl 3-ethoxypropionate according to claim 3, characterized in that, A circulation pump (412) is fixedly installed at the middle of the rear end of the extension platform (401). The outlet of the circulation pump (412) is connected to the upper rear end of the left and right condensing auxiliary cylinders (403) through the first diversion pipe (413). The inlet of the circulation pump (412) is connected to the lower rear end of the water tank (414) through a pipeline. The water tank (414) is fixedly installed at the lower rear end of the extension platform (401). A heat absorption perforated plate (415) is fixedly installed at the upper end of the water tank (414). The upper left and right sides of the water tank (414) are both connected to one end of the second diversion pipe (416). The other end of the second diversion pipe (416) is connected to the bottom end of the condensing auxiliary cylinder (403).

5. The distillation apparatus for preparing ethyl 3-ethoxypropionate according to claim 4, characterized in that, The exhaust mechanism (9) includes an air box (901), a cylinder (902) is fixedly installed at the bottom end of the air box (901), a pusher (903) is fixedly installed at the telescopic end of the cylinder (902), the left side of the pusher (903) passes through the right side of the air box (901) and is fixedly connected to the right side of the box plate (904), the box plate (904) is slidably connected inside the air box (901), the left side of the air box (901) is connected to one end of the air outlet pipe (906), the other end of the air outlet pipe (906) is connected to the rear end of the air diffuser sleeve (907), a number of exhaust holes are evenly distributed on the inner wall of the air diffuser sleeve (907), the top end of the air box (901) is connected to one end of the air inlet pipe (905), and the other end of the air inlet pipe (905) is connected to the air outlet plug (810).

6. The distillation apparatus for preparing ethyl 3-ethoxypropionate according to claim 5, characterized in that, The top of the distillation column (3) is connected to the left side of the top of the main steam cylinder (402) through a pipeline. The liquid outlets on the left and right sides of the bottom of the main steam cylinder (402) are connected to the left and right sides of the top of the fractionator (5). The liquid outlet on the right side of the bottom of the fractionator (5) is connected to the upper left side of the storage tank (801) through a pipeline. A gas box (901) is fixedly installed at the rear end of the fractionator (5). An extension platform (401) is fixedly installed at the rear top of the fractionator (5).

7. The distillation apparatus for preparing ethyl 3-ethoxypropionate according to claim 6, characterized in that, A drive motor (202) is fixedly connected to the bottom left side of the chassis (1). A tower box (201) is fixedly installed on the top left side of the chassis (1). A gas dissipation sleeve (907) is provided on the outside of the tower box (201). A distillation column (3) is fixedly installed on the top of the tower box (201). A liquid storage tank (801) is fixedly installed on the top right side of the chassis (1). A discharge port is fixedly installed on the lower right side of the liquid storage tank (801). A vacuum pump (10) is fixedly installed on both the front and rear sides of the top center of the chassis (1). The vacuum pump (10) is connected to the upper center of the front and rear sides of the liquid storage tank (801) through pipelines.

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