Dimethyl oxalate synthesizer

Abstract

The invention relates to the technical field of steam-water separation equipment, in particular to a dimethyl oxalate synthesizer which comprises a tank body, a driving motor is coaxially mounted at the top end of the tank body, a rotating rod is coaxially connected to the output end of the driving motor and located in the tank body, and a plurality of first turbine blades are connected to the side wall of the rotating rod; the multiple first turbine blades are evenly distributed around the axis of the rotating rod, the height of the first turbine blades in the vertical direction is located between the water inlet pipe and the air outlet pipe, and the horizontal projection of the highest point of each first turbine blade is located in the horizontal projection of the adjacent first turbine blade. And centrifugal force can be generated in the steam rotating process, and water molecule particles in the steam move towards the outer side of the first turbine blade under the action of the centrifugal force and are collected, so that the water molecule particles in the steam are separated from other gas components, the problem that heat transfer of the steam is hindered by the water molecule particles carried in the steam is avoided, and the steam quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of gas-water separation equipment technology, specifically to a dimethyl oxalate synthesis device. Background Technology

[0002] Dimethyl oxalate is an important organic compound that plays a vital role in industrial production and the chemical industry. Dimethyl oxalate is produced by a coupling reaction of carbon monoxide and methyl nitrite under the action of a catalyst. Dimethyl oxalate is mainly used in organic synthesis, pharmaceuticals, pesticides and other fields.

[0003] The synthesis process of dimethyl oxalate is as follows: First, the circulating gas containing CO and MN in the regeneration tower is sent to a gas-liquid separator for gas-liquid separation, obtaining gaseous CO and MN. This gaseous gas is then pressurized and mixed with fresh CO feed gas. The mixed circulating gas is heated by a steam drum preheater before entering the reactor. In the reactor, it reacts with a palladium-based catalyst to produce dimethyl oxalate. The steam drum preheater uses water as a medium and exchanges heat with the water generated in the reactor, raising the water temperature and causing it to vaporize into steam. This steam is then used to preheat the mixed circulating gas, ensuring the dimethyl oxalate is produced. While dimethyl oxalate reacts at a preset temperature, the heat generated can be effectively utilized, improving the energy efficiency of the entire process. However, the resulting steam carries a large number of water molecules, which not only reduces steam quality but may also affect the heat transfer efficiency of the steam, reducing the preheating effect of the steam drum preheater on the circulating gas, thus affecting the synthesis of dimethyl oxalate. To address this issue, existing technologies provide a solution, such as the utility model patent with patent application number CN202321188738.6, which provides a swirling steam-water molecule particle separator for superheated steam. The technical solution provided in this patent is as follows: The device includes a cylindrical body, inside which a vortex reversing tube is vertically installed. A spiral flow divider is installed on the outer wall of the vortex reversing tube from bottom to top. A reversing plate is installed on the upper outer wall of the vortex reversing tube, and the reversing plate is inclined. A saturated steam inlet is located on one side of the upper part of the cylindrical body. In this vortex-type steam-water molecule particle separator for superheated steam, the density difference between the steam and water mixture is utilized to separate the steam and water molecules through gravity and centrifugal force, achieving primary separation. The saturated steam separated in this primary separation flows upward along the vortex reversing tube inside the cylindrical body and enters the upper space of the reversing plate. Under the action of centrifugal force and gravity, small water droplets condense on the reversing plate, forming a solid flow. Under the action of the steam, a water film is formed and flows downwards, flowing into the steam drum water volume through the guide pipe, further separating the steam and water. The separated saturated steam is introduced into the steam space of the steam drum through the pipe. However, the steam is generated by the vaporization of water. The initial velocity of the vaporized steam is relatively slow. When it enters the cylinder and passes through the spiral distributor, the rotational kinetic energy is low, and the centrifugal force generated is small. This makes the water droplets move slowly towards the cylinder wall. Some water droplets may not reach the cylinder wall in time, resulting in incomplete separation. This increases the water content in the steam entering the subsequent process, reduces the steam quality, affects the heat transfer efficiency of the steam, and reduces the preheating effect of the steam drum preheater on the circulating gas. Summary of the Invention

[0004] The purpose of this invention is to provide a dimethyl oxalate synthesis apparatus to solve the problem that water molecule particles carried in steam hinder the heat transfer of steam, thereby reducing the preheating effect of the steam drum preheater on the circulating gas and thus affecting the synthesis of dimethyl oxalate.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A dimethyl oxalate synthesis apparatus includes a tank body, on which an inlet pipe, an outlet pipe, and a water outlet are respectively connected. The inlet pipe, outlet pipe, and water outlet are located on the lower side wall, upper side wall, and bottom wall of the tank body, respectively. One end of the outlet pipe is connected to multiple heating pipes and a preheating tank. The multiple heating pipes are located inside the preheating tank. A drive motor is coaxially mounted on the top of the tank body. The output end of the drive motor is coaxially connected to a rotating rod located inside the tank body. Multiple turbine blades are connected to the side wall of the rotating rod. The multiple turbine blades are evenly distributed around the axis of the rotating rod. The vertical height of the turbine blades is between the inlet pipe and the outlet pipe. The horizontal projection of the highest point of the turbine blade is located within the horizontal projection of the adjacent turbine blade.

[0007] Dimethyl oxalate is generated in the reactor, and the reaction process is accompanied by a large amount of heat. This heat is exchanged with a water-based heat exchanger, raising the water temperature. The water is then transported to the tank through the inlet pipe. At this high temperature, the water vaporizes and produces steam. The drive motor is then activated, rotating the rotor and its rotating and connecting parts. The connecting part drives the first turbine blade connected to it to rotate. The rotation of the first turbine blade creates a negative pressure zone below it. Because the steam has a higher temperature and lower density than the surrounding air, it moves upwards under the influence of this negative pressure zone. The rotation of the first turbine blade drives the steam to rotate. Centrifugal force is generated during the process. Since the mass of water molecules is greater than that of other gas molecules in the steam, under the action of centrifugal force, the water molecules move to the outside of the first turbine blade, contact the side wall of the tank and adhere to it. Meanwhile, other gas molecules with smaller masses remain relatively more in the area near the center of rotation. This achieves the separation of water molecules from other gas components in the steam, preventing water molecules carried in the steam from hindering the heat transfer of the steam. This avoids reducing the preheating effect of the steam drum preheater on the circulating gas, which would affect the synthesis of dimethyl oxalate. This ensures the quality of the steam and enables the steam drum preheater to efficiently preheat the circulating gas, maintaining the circulating gas at a suitable temperature when it enters the reactor.

[0008] Preferably, a plurality of guide plates are horizontally connected to the inner sidewall of the tank. The plurality of guide plates are evenly distributed around the axis of the tank. The other sidewall of the plurality of guide plates is rotatably connected to the rotating rod. The guide plates are located below the first turbine blade. The guide plates are inclined. The horizontal projection of the highest point of the guide plate coincides with the horizontal projection of the lowest point of the adjacent guide plate. The inclination direction of the guide plate is opposite to the rotation direction of the first turbine blade, and the inclination direction of the guide plate is perpendicular to the tangent direction of the bottom end of the first turbine blade.

[0009] By designing guide plates, the direction of steam is changed, deflecting its movement and aligning it perpendicular to the tangent at the bottom of the first turbine blade. This perpendicular design allows water molecules in the steam to gain greater momentum perpendicular to the blade surface, enabling them to overcome surface tension and the carrying capacity of the steam. The water then separates from the steam and adheres to the blade surface. The water adhering to the blade surface moves to the outer side of the blade under the centrifugal force generated by the rotation of the turbine blade, and is then collected on the side wall of the tank. The guide plate design ensures that the steam's movement direction is perpendicular to the tangent at the bottom of the first turbine blade, thereby improving the efficiency of the turbine blade in adsorbing and collecting water molecules in the steam and guaranteeing steam quality.

[0010] Preferably, an annular filter screen is connected to the inner wall of the tank. The inner diameter end of the annular filter screen is connected to the rotating rod. The annular filter screen is located above the first turbine blade. The annular filter screen includes multiple first inclined sections and multiple second inclined sections. The first inclined sections and second inclined sections are staggered and inclined in opposite directions. The tops of adjacent first inclined sections and second inclined sections are connected, and the bottoms of adjacent first inclined sections and second inclined sections are connected. Multiple first inclined surfaces are inclinedly arranged on the annular filter screen. The first inclined surfaces are located on the lower end surface of the first inclined sections, and the first inclined surfaces are perpendicular to the tangent direction of the tip of the first turbine blade.

[0011] Because of the gap between adjacent turbine blades, some steam may not come into contact with the inner wall of the tank and the surface of the turbine blades, making it impossible to separate the water molecules in this portion of steam. Therefore, an annular filter is installed on the turbine blade. Under the action of the turbine blade, the steam flies out tangentially along the tip of the turbine blade and collides perpendicularly with the inclined surface on the inclined section. The perpendicular design of the steam's movement direction to the inclined surface allows the residual water molecules in the steam to gain a greater momentum perpendicular to the inclined surface, enabling the water molecules to overcome surface tension and the carrying force of the steam, thus facilitating the separation of water molecules from the steam. Water molecules in the steam are adsorbed and filtered from the air. At the same time, the second inclined section can adsorb and filter some water molecules in the steam that are scattered by the impact. During the process, the water molecules in the steam are left on the lower end of the annular filter screen. The air continues to move upward through the annular filter screen. The design of the annular filter screen adsorbs and collects water molecules that are not adsorbed by the inner wall of the tank and the first turbine blade, and filters out gas without water molecules. This avoids the problem that the water molecules remaining in the steam reduce the preheating effect of the steam drum preheater on the circulating gas, thus affecting the synthesis of dimethyl oxalate, and ensures the quality of the steam.

[0012] Preferably, the upper and lower end faces of the first turbine blade are evenly distributed with multiple protrusions, the cross-section of the protrusions is rhomboid, the cross-sectional area of ​​the protrusions decreases outward from the blade surface of the first turbine blade, and the centerline of the protrusions intersects with the axis of the rotating rod.

[0013] The protrusions on the No. 1 turbine blade increase the overall contact area with water molecules, thereby increasing the overall collection of water molecules in the steam. At the same time, they can disturb the flowing steam, causing it to move irregularly. This allows water molecules in the steam to come into contact with and adhere to the surface of the No. 1 turbine blade and the protrusions from multiple angles. The protrusion design improves the overall collection of water molecules in the steam, ensuring steam quality.

[0014] Furthermore, the protrusion's design better guides water molecules on its surface to move to the blade of the first turbine. Simultaneously, the rotation of the first turbine generates centrifugal force. Under the guidance of centrifugal force and the protrusion, the water on the surface of the first turbine moves to the outside of the first turbine and is then collected on the side wall of the tank. This prevents water molecules on the surface of the protrusion from detaching from the protrusion and re-entering the steam under centrifugal force, thus affecting the quality of the steam.

[0015] Preferably, the rotating rod includes a transmission part and a connecting part. The rotating part is connected to the output end of the drive motor. The transmission part and the connecting part are coaxially connected. The connecting part is conical. The large-diameter end of the connecting part is located above the small-diameter end of the connecting part. The sidewall of the connecting part is connected to the first turbine blade.

[0016] By designing the connection section, the area through which steam passes at the top of the first turbine blade is smaller than the area through which steam passes at the bottom of the first turbine blade. When the steam moves upward, its velocity increases, allowing the water molecules in the steam to gain greater momentum perpendicular to the first inclined surface. This enables the water molecules to overcome surface tension and the carrying force of the steam, further adsorbing and filtering the water molecules and air in the steam, thus improving the gas-water separation effect in the steam and ensuring steam quality.

[0017] Preferably, the tank body is provided with an annular collection groove. The top wall, bottom wall, and side wall of the collection groove are connected to the inner wall of the tank body through a ventilation groove, a water supply groove, and a water inlet groove, respectively. The connection between the ventilation groove and the inner wall of the tank body is located between the annular filter screen and the second turbine blade. The connection between the water supply groove and the inner wall of the tank body is located below the guide plate. The connection between the water inlet groove and the inner wall of the tank body is located between the second turbine blade and the annular filter screen. The outer wall of the first turbine blade is slidably connected to the inner wall of the tank body.

[0018] By sliding the outer wall of the first turbine blade to the inner wall of the tank, steam leakage from the gap between the outer wall of the first turbine blade and the inner wall of the tank is prevented. This part of the steam cannot fully pass through the centrifugal force field generated by the rotation of the first turbine blade, so that the water molecules in the steam cannot effectively move towards the side wall of the tank and be adsorbed under the action of centrifugal force, and separate from other gas components, thus reducing the steam separation effect and ensuring steam quality.

[0019] Furthermore, when the first turbine blade rotates, it pushes the water on the side wall of the tank upwards to the top of the first turbine blade, then flows into the water inlet tank and into the collection tank. At the same time, the rotation of the connecting part drives the annular filter screen to rotate. The centrifugal force generated by the rotation acts on the water on the annular filter screen, causing the water to move along the lower end face of the annular filter screen to the water inlet tank and into the collection tank. This collects the water separated from the steam, preventing water from accumulating on the side wall of the tank and the annular filter screen, which would reduce the effective filtration area of ​​the filter screen, reduce its ability to filter and separate moisture from the steam, and affect the quality of the steam. At the same time, water occupies a certain space, narrowing the steam flow channel, increasing the resistance to steam flow, and reducing the steam flow rate. This can lead to the problem that the preheating of the circulating gas cannot reach the preset temperature, thus ensuring the quality of the steam and the overall steam flow rate.

[0020] Meanwhile, the water in the collection tank flows to the bottom of the tank through the water delivery channel below the collection tank under the action of gravity and the negative pressure generated by the rotation of the No. 1 turbine blade. Due to the presence of the water inlet channel, some steam will enter the collection tank. This steam will come to the position between the annular filter and the No. 2 turbine blade through the venting channel above the collection tank. By setting the position of the connection between the venting channel and the inner wall of the tank, the negative pressure generated by the rotation of the No. 1 turbine blade and the action of gravity will accelerate the discharge and recycling speed of water, avoid the accumulation on the side wall of the water tank and the annular filter, avoid occupying a certain space, narrow the steam flow channel, increase the resistance of steam flow, reduce the steam flow, and cause the problem that the preheating of the circulating gas cannot reach the preset temperature, thus ensuring the overall steam flow rate.

[0021] Preferably, a turntable is coaxially fixedly connected to the rotating part. The turntable is located above the first turbine blade. The horizontal projected area of ​​the turntable is equal to the horizontal projected area of ​​the connecting part. Multiple second turbine blades are connected to the outer wall of the turntable. The twisting direction of the second turbine blades is the same as that of the first turbine blade. The second turbine blades are evenly distributed around the axis of the rotating rod. The outer wall of the second turbine blades slides in fit with the inner wall of the tank.

[0022] During the rotation of the rotating rod, the turntable is driven to rotate, and the turntable drives the No. 2 turbine blade to rotate. At this time, a negative pressure zone is formed below the No. 2 turbine blade. Under the action of the negative pressure zone formed by the No. 2 turbine blade, the rate of steam passing through the annular filter is increased, avoiding the problem that the steam passing efficiency is affected by water adhering to the annular filter screen, which would prevent the circulating gas from not reaching the preset temperature during preheating, thus ensuring the overall steam flow rate.

[0023] Furthermore, due to the presence of the inlet tank, some steam will enter the collection tank. This steam will return to the area below the guide plate under the negative pressure generated by the rotation of the first turbine blade. This will increase the total amount of steam that the equipment needs to process, thereby affecting the overall steam separation rate of the equipment. To address this, the second turbine blade rotates to create negative pressure, which draws the steam in the collection tank between the second turbine blade and the annular filter screen, preventing steam backflow from affecting the steam separation rate of the equipment and ensuring the quality of the steam.

[0024] Preferably, the annular filter is conical, with the large-diameter end of the annular filter located below the small-diameter end of the annular filter. The large-diameter end of the annular filter is slidably connected to the inner wall of the tank, and the small-diameter end of the annular filter is fixedly connected to the connecting part. The upper end face of the water inlet trough is flush with the lower end face of the annular filter.

[0025] The conical design allows water to slide rapidly down the conical slope, reducing its residence time on the filter screen. Simultaneously, the rotation of the connecting part drives the annular filter screen to rotate. The centrifugal force and gravity generated by the rotation act on the water on the annular filter screen, causing the water to move along the lower end face of the annular filter screen to the inlet tank and then into the collection tank. This significantly improves the drainage speed and prevents water accumulation. This smooth movement path helps improve the overall drainage efficiency and ensures that the filter screen can work continuously and effectively.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. This invention utilizes the design of a first turbine blade. The rotation of the first turbine blade drives the steam to rotate. During the rotation of the steam, centrifugal force is generated. Under the action of centrifugal force, water molecules in the steam move to the outside of the first turbine blade and come into contact with and are adsorbed and collected on the side wall of the tank. This achieves the separation of water molecules in the steam from other gas components, avoids water molecules in the steam from hindering the heat transfer of the steam, and ensures the quality of the steam.

[0028] 2. This invention uses a ring-shaped filter to adsorb and filter water molecules that are not adsorbed by the inner wall of the tank and the first turbine blade, and filters out gas without water molecules. This avoids the problem that residual water molecules in the steam reduce the preheating effect of the steam drum preheater on the circulating gas, thus affecting the synthesis of dimethyl oxalate, and ensures the quality of the steam.

[0029] 3. This invention, through the design of guide plates, a rotating disk, and a second turbine blade, allows steam to vertically impact the first turbine blade under the action of the guide plates, thereby improving the efficiency of the first turbine blade in adsorbing and collecting water molecules in the steam. At the same time, the negative pressure generated by the rotation of the second turbine blade increases the rate at which steam passes through the annular filter, avoiding the problem that water adhering to the annular filter screen will affect the steam passing efficiency and prevent the circulating gas from failing to reach the preset temperature during preheating, thus ensuring the overall steam flow rate and steam quality. Attached Figure Description

[0030] Figure 1 A half-sectional side view of the dimethyl oxalate synthesis apparatus;

[0031] Figure 2 This is a full cross-sectional view of the dimethyl oxalate synthesis apparatus.

[0032] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0033] Figure 4 Assembly shaft view of rotating rod, annular filter screen, turbine blade No. 1, turbine blade No. 2, guide vane, and turntable;

[0034] Figure 5 for Figure 4 A magnified view of point B in the middle.

[0035] In the diagram: 1. Tank body; 12. Inlet pipe; 13. Outlet pipe; 14. Outlet; 15. Heating pipe; 16. Preheating tank; 17. Drive motor; 2. Rotating rod; 21. Transmission part; 22. Connecting part; 23. No. 1 turbine blade; 24. Protrusion; 3. Guide plate; 4. Annular filter screen; 41. No. 1 inclined part; 42. No. 2 inclined part; 43. No. 1 inclined surface; 5. Turntable; 51. No. 2 turbine blade; 6. Collection tank; 61. Ventilation tank; 62. Water supply tank; 63. Inlet tank; S1. Rotation direction of the rotating rod. Detailed Implementation

[0036] Please see Figures 1 to 5 This invention provides a dimethyl oxalate synthesis apparatus, wherein S1 in the figure represents the rotation direction of the rotating rod, and the technical solution is as follows:

[0037] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5A dimethyl oxalate synthesis apparatus includes a tank 1, with an inlet pipe 12, an outlet pipe 13, and a water outlet 14 connected to the tank 1. The inlet pipe 12, outlet pipe 13, and water outlet 14 are located on the lower side wall, upper side wall, and bottom wall of the tank 1, respectively. Multiple heating pipes 15 and a preheating tank 16 are connected to one end of the outlet pipe 13. The multiple heating pipes 15 are located inside the preheating tank 16. A drive motor 17 is coaxially mounted at the top of the tank 1. A rotating rod 2 is coaxially connected to the output end of the drive motor 17. The rotating rod 2 is located inside the tank 1, and its side wall is connected to... Multiple turbine blades 23 are connected, and the multiple turbine blades 23 are evenly distributed around the axis of the rotating rod 2. The vertical height of the turbine blade 23 is located between the water inlet pipe 12 and the air outlet pipe 13. The horizontal projection of the highest point of the turbine blade 23 is located within the horizontal projection of the adjacent turbine blade 23. Multiple protrusions 24 are evenly distributed on the upper and lower end faces of the turbine blade 23. The cross-section of the protrusion 24 is rhomboid. The cross-sectional area of ​​the protrusion 24 decreases outward from the blade surface of the turbine blade 23. The centerline of the protrusion 24 intersects the axis of the rotating rod 2.

[0038] Please see Figure 1 , Figure 2 , Figure 4 Multiple guide plates 3 are horizontally connected to the inner wall of the tank body 1. The multiple guide plates 3 are evenly distributed around the axis of the tank body 1. The other side wall of the multiple guide plates 3 is rotatably connected to the rotating rod 2. The guide plates 3 are located below the first turbine blade 23. The guide plates 3 are inclined. The horizontal projection of the highest point of the guide plate 3 coincides with the horizontal projection of the lowest point of the adjacent guide plate 3. The inclination direction of the guide plate 3 is opposite to the rotation direction of the first turbine blade 23, and the inclination direction of the guide plate 3 is perpendicular to the tangent direction of the bottom end of the first turbine blade 23.

[0039] Please see Figures 1 to 4 An annular filter screen 4 is connected to the inner wall of the tank body 1. The inner diameter end of the annular filter screen 4 is connected to the rotating rod 2. The annular filter screen 4 is located above the first turbine blade 23. The annular filter screen 4 includes multiple first inclined portions 41 and multiple second inclined portions 42. The first inclined portions 41 and second inclined portions 42 are staggered and inclined in opposite directions. The tops of adjacent first inclined portions 41 and second inclined portions 42 are connected. The bottom is connected, and multiple inclined surfaces 43 are inclinedly arranged on the annular filter screen 4. The inclined surfaces 43 are located on the lower end surface of the inclined part 41 and are perpendicular to the tangent direction of the tip of the turbine blade 23. The annular filter screen 4 is conical, with the large diameter end of the annular filter screen 4 located below the small diameter end of the annular filter screen 4. The large diameter end of the annular filter screen 4 is slidably connected to the inner wall of the tank 1, and the small diameter end of the annular filter screen 4 is fixedly connected to the connecting part 22. The upper end surface of the water inlet trough 63 is flush with the lower end surface of the annular filter screen 4.

[0040] Please see Figure 2 , Figure 3 The rotating rod 2 includes a transmission part 21 and a connecting part 22. The rotating part is connected to the output end of the drive motor 17. The transmission part 21 and the connecting part 22 are coaxially connected. The connecting part 22 is conical, with its large-diameter end located above its small-diameter end. The side wall of the connecting part 22 is connected to the first turbine blade 23. A turntable 5 is coaxially fixedly connected to the connecting part 22. The turntable 5 is located above the first turbine blade 23, and its horizontal projected area is equal to that of the connecting part 22. Multiple second turbine blades 51 are connected to the outer side wall of the turntable 5. The twisting direction of the second turbine blades 51 is the same as that of the first turbine blade 23. The second turbine blades 51 are evenly distributed around the axis of the rotating rod 2. The outer side wall of the second turbine blades 51 slides against the inner side wall of the tank 1.

[0041] Please see Figure 2 , Figure 3 The tank body 1 is provided with an annular collection trough 6. The top wall, bottom wall and side wall of the collection trough 6 are connected to the inner wall of the tank body 1 through the ventilation trough 61, the water supply trough 62 and the water inlet trough 63 respectively. The connection between the ventilation trough 61 and the inner wall of the tank body 1 is located between the annular filter screen 4 and the second turbine blade 51. The connection between the water supply trough 62 and the inner wall of the tank body 1 is located below the guide plate 3. The connection between the water inlet trough 63 and the inner wall of the tank body 1 is located between the second turbine blade 51 and the annular filter screen 4. The outer side wall of the first turbine blade 23 is slidably connected to the inner side wall of the tank body 1.

[0042] Working principle: Dimethyl oxalate is generated in the reactor, and a large amount of heat is generated during the reaction. At this time, the heat is exchanged with the heat exchange device using water as a medium, which raises the temperature of the water. The water is then transported to the tank 1 through the water inlet pipe 12. The water at high temperature vaporizes and produces water vapor. At this time, the drive motor 17 is started to rotate, which in turn drives the rotating rod 2 and the rotating part and connecting part 22 on the rotating rod 2 to rotate. The connecting part 22 drives the first turbine blade 23 connected to it to rotate. When the first turbine blade 23 rotates, a negative pressure zone is formed below it. At this time, the steam, due to its higher temperature and lower density than the surrounding air, moves upward under the action of the negative pressure zone formed by the first turbine blade 23. The upward-moving steam is guided by the guide plate 3. The direction changes under the action and becomes perpendicular to the tangent at the bottom of the first turbine blade 23. This perpendicularity of the steam movement direction to the tangent at the bottom of the first turbine blade 23 allows water molecules in the steam to gain a greater momentum perpendicular to the surface of the first turbine blade 23. This enables the water molecules to overcome surface tension and the carrying force of the steam, thus separating from the steam and adhering to the surface of the first turbine blade 23. The protrusions 24 on the first turbine blade 23 increase the overall contact area with the water molecules and also disturb the flowing steam, causing it to move randomly. This allows water molecules in the steam to contact and adhere to the surface of the first turbine blade 23 and the protrusions 24 from multiple angles. The design of the protrusion 24 allows for better guidance of water molecules on its surface to move to the blade surface of the first turbine blade 23. Simultaneously, the rotation of the first turbine blade 23 generates centrifugal force. Under the guidance of this centrifugal force and the protrusion 24, the water on the surface of the first turbine blade 23 moves to the outer side of the blade, and then to the side wall of the tank 1. The rotation of the first turbine blade 23 also drives the steam to rotate. During this rotation, centrifugal force is generated. Because the mass of water molecules is greater than that of other gas molecules in the steam, under the influence of centrifugal force, the water molecules move to the outer side of the first turbine blade 23, contacting and adhering to the side wall of the tank 1. Meanwhile, the smaller gas molecules... More water molecules remain in the region near the center of rotation, thus achieving the separation of water molecules from other gas components in the steam. Under the action of the first turbine blade 23, the water and steam on the side wall of the tank 1 move upward. When they reach the tip of the first turbine blade 23, the steam flies out along the tangential direction of the tip of the first turbine blade 23. The water molecules remaining in the steam collide perpendicularly with the first inclined surface 43 on the first inclined part 41. The perpendicular design of the steam movement direction to the first inclined surface 43 allows the water molecules remaining in the steam to gain a large momentum perpendicular to the first inclined surface 43, enabling the water molecules to overcome the surface tension and the carrying force of the steam, thereby adsorbing and filtering the water molecules and air in the steam.Simultaneously, the second inclined section 42 can adsorb and filter water molecules and air particles in the steam scattered by the impact. During the process, water molecules in the steam are left on the lower end face of the annular filter screen 4, while the air continues to move upward through the annular filter screen 4. When the connecting section 22 rotates, it drives the annular filter screen 4 to rotate. The centrifugal force generated by the rotation acts on the water on the annular filter screen 4, causing the water to move along the lower end face of the annular filter screen 4 to the water inlet tank 63 and into the collection tank 6. At the same time, water droplets on the side wall of the tank 1 move upward and reach the top of the first turbine blade 23, then flow into the water inlet tank 63 and into the collection tank 6. At this time, the water in the collection tank 6 is transported by the water delivery channel 62 below the collection tank 6 under the influence of gravity and the rotation of the first turbine blade 23. Under the negative pressure, the steam flows to the bottom of the tank 1. Due to the presence of the inlet tank 63, some steam enters the collection tank 6. This steam flows from the venting channel 61 above the collection tank 6 to the position between the annular filter 4 and the second turbine blade 51. During the rotation of the rotating rod 2, the rotating disk 5 rotates, which in turn drives the second turbine blade 51 to rotate. At this time, a negative pressure zone is formed below the second turbine blade 51. Through the appearance design of the connecting part 22 and the action of the negative pressure zone formed by the second turbine blade 51, the rate of steam passing through the annular filter 4 and flowing through the venting channel 61 is increased. The separated steam passes through the second turbine blade 51 and enters the outlet pipe 13, and then enters the heating pipe 15. The heating pipe 15 preheats the circulating gas in the preheating tank 16.

[0043] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A dimethyl oxalate synthesis apparatus, comprising a tank (1), wherein the tank (1) is respectively connected to a water inlet pipe (12), a gas outlet pipe (13), and a water outlet (14), the water inlet pipe (12), the gas outlet pipe (13), and the water outlet (14) being located on the lower side wall, the upper side wall, and the lower wall of the tank (1), respectively, and a plurality of heating pipes (15) and a preheating tank (16) are connected to one end of the gas outlet pipe (13), wherein the plurality of heating pipes (15) are located inside the preheating tank (16), characterized in that, A drive motor (17) is coaxially mounted on the top of the tank (1). The output end of the drive motor (17) is coaxially connected to a rotating rod (2). The rotating rod (2) is located inside the tank (1). Multiple first turbine blades (23) are connected to the side wall of the rotating rod (2). The multiple first turbine blades (23) are evenly distributed around the axis of the rotating rod (2). The vertical height of the first turbine blade (23) is between the water inlet pipe (12) and the air outlet pipe (13). The horizontal projection of the highest point of the first turbine blade (23) is located within the horizontal projection of the adjacent first turbine blade (23).

2. The dimethyl oxalate synthesis apparatus according to claim 1, characterized in that, Multiple guide plates (3) are horizontally connected to the inner wall of the tank (1). The multiple guide plates (3) are evenly distributed around the axis of the tank (1). The other side wall of the multiple guide plates (3) is rotatably connected to the rotating rod (2). The guide plates (3) are located below the first turbine blade (23). The guide plates (3) are inclined. The horizontal projection of the highest point of the guide plate (3) coincides with the horizontal projection of the lowest point of the adjacent guide plate (3). The inclination direction of the guide plate (3) is opposite to the rotation direction of the first turbine blade (23), and the inclination direction of the guide plate (3) is perpendicular to the tangent direction of the bottom end of the first turbine blade (23).

3. The dimethyl oxalate synthesis apparatus according to claim 1, characterized in that, An annular filter screen (4) is connected to the inner wall of the tank (1). The inner diameter end of the annular filter screen (4) is connected to the rotating rod (2). The annular filter screen (4) is located above the first turbine blade (23). The annular filter screen (4) includes multiple first inclined sections (41) and multiple second inclined sections (42). The first inclined sections (41) and second inclined sections (42) are staggered and inclined. And the inclination directions are opposite. The tops of the adjacent first inclination part (41) and the second inclination part (42) are connected, and the bottoms of the adjacent first inclination part (41) and the second inclination part (42) are connected. The annular filter screen (4) is provided with a plurality of first inclination surfaces (43). The first inclination surface (43) is located on the lower end surface of the first inclination part (41). The first inclination surface (43) is perpendicular to the tangent direction of the top of the first turbine blade (23).

4. The dimethyl oxalate synthesis apparatus according to claim 1, characterized in that, The first turbine blade (23) has multiple protrusions (24) evenly distributed on its upper and lower end faces. The cross-section of the protrusion (24) is rhomboid. The cross-sectional area of ​​the protrusion (24) decreases outward from the blade surface of the first turbine blade (23). The centerline of the protrusion (24) intersects with the axis of the rotating rod (2).

5. The dimethyl oxalate synthesis apparatus according to claim 4, characterized in that, The rotating rod (2) includes a transmission part (21) and a connecting part (22). The rotating part is connected to the output end of the drive motor (17). The transmission part (21) and the connecting part (22) are coaxially connected. The connecting part (22) is conical. The large diameter end of the connecting part (22) is located above the small diameter end of the connecting part (22). The side wall of the connecting part (22) is connected to the first turbine blade (23).

6. The dimethyl oxalate synthesis apparatus according to claim 3, characterized in that, The tank (1) is provided with an annular collection groove (6). The top wall, bottom wall and side wall of the collection groove (6) are connected to the inner wall of the tank (1) through a ventilation groove (61), a water supply groove (62) and a water inlet groove (63), respectively. The connection between the ventilation groove (61) and the inner wall of the tank (1) is located between the annular filter screen (4) and the second turbine blade (51). The connection between the water supply groove (62) and the inner wall of the tank (1) is located below the guide plate (3). The connection between the water inlet groove (63) and the inner wall of the tank (1) is located between the second turbine blade (51) and the annular filter screen (4). The outer side wall of the first turbine blade (23) is slidably connected to the inner side wall of the tank (1).

7. The dimethyl oxalate synthesis apparatus according to claim 6, characterized in that, A turntable (5) is coaxially fixedly connected to the rotating part. The turntable (5) is located above the first turbine blade (23). The horizontal projection area of ​​the turntable (5) is equal to the horizontal projection area of ​​the connecting part (22). Multiple second turbine blades (51) are connected to the outer wall of the turntable (5). The twisting direction of the second turbine blades (51) is the same as that of the first turbine blade (23). The second turbine blades (51) are evenly distributed around the axis of the rotating rod (2). The outer wall of the second turbine blades (51) slides in conjunction with the inner wall of the tank (1).

8. The dimethyl oxalate synthesis apparatus according to claim 6, characterized in that, The annular filter (4) is conical. The large diameter end of the annular filter (4) is located below the small diameter end of the annular filter (4). The large diameter end of the annular filter (4) is slidably connected to the inner wall of the tank (1). The small diameter end of the annular filter (4) is fixedly connected to the connecting part (22). The upper end face of the water inlet tank (63) is flush with the lower end face of the annular filter (4).

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