An extraction device for methanol production

Abstract

The present invention relates to the technical field of methanol production, and specifically to an extraction device for methanol production. The device comprises a power base, an evaporation stirring drum mounted on the power base, a gas-liquid separation assembly mounted on the evaporation stirring drum, a condenser mounted on the evaporation stirring drum, and an evaporation stirring device within the evaporation stirring drum for thoroughly mixing and heating and evaporating raw materials. The power base also includes a double-layer transmission assembly for varying the operating speed of the evaporation stirring device. The extraction device for methanol production according to the present invention achieves low-cost dynamic speed regulation and efficient mixing, and features multi-stage gas-liquid separation and condensation optimization.

Description

Technical Field

[0001] The present invention relates to the technical field of methanol production, in particular to an extraction device for methanol production. Background Art

[0002] In the methanol production process, the mixing uniformity of raw materials, evaporation efficiency, and gas-liquid separation effect directly affect product purity and energy consumption. Traditional extraction devices have the following technical bottlenecks:

[0003] 1. Poor coordination between stirring and heating: Conventional stirring devices use a single speed mode and cannot dynamically adjust the stirring intensity according to the material viscosity and evaporation stage, resulting in material deposition at the bottom, local overheating and coking, and reduced heat transfer efficiency;

[0004] 2. Insufficient gas-liquid separation: Existing separation components mostly use single-stage condensation, and volatile substances are easily entrained with uncondensed gas phase, resulting in a reduced methanol recovery rate;

[0005] 3. High redundancy of the transmission system: Multiple motors drive the mixing and transmission mechanisms, resulting in high energy consumption, large space occupation, and delayed speed regulation response;

[0006] 4. Complexity of equipment maintenance: Traditional scraping mechanisms and condensing components are mostly fixed designs, which are difficult to clean and affect the continuous production cycle. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides an extraction device for methanol production, which can realize dynamic speed regulation and efficient mixing at low cost and has multi-stage gas-liquid separation and condensation optimization.

[0008] In order to solve the above technical problems, the technical solution provided by the present invention is: an extraction device for methanol production, which includes a power base, an evaporation stirring drum is provided on the power base, a gas-liquid separation component is provided on the evaporation stirring drum, a condenser is also provided on the evaporation stirring drum, an evaporation stirring device is provided in the evaporation stirring drum for fully mixing and heating and evaporating the raw materials, and a double-layer transmission component is provided in the power base for changing the operating speed of the evaporation stirring device.

[0009] As an improvement, the evaporation and stirring device includes a circular tray that can rotate at the bottom of the evaporation and stirring drum, a number of evenly distributed evaporation heaters are provided on the circular tray, a main stirring impeller that rotates relative to the circular tray and moves up and down is provided at the central axis of the circular tray, two symmetrically distributed spiral stirring wheels for liquid lifting are provided on the circular tray, and two symmetrically distributed scraper frames are fixedly installed on the circular tray, and the scraper frames are in contact with the inner wall of the evaporation and stirring drum.

[0010] As an improvement, the double-layer transmission assembly includes a three-axis bracket located in the power base, which can be driven to rotate by a motor in the power base. Both ends of the three-axis bracket are rotatably connected to a first double-layer gear set fixed to the spiral stirring wheel. A main shaft is fixed to the three-axis bracket, and a second double-layer gear set located below the circular tray is connected to the outer outer portion of the main shaft. The main stirring impeller can move up and down on the main shaft and is fixed to the second double-layer gear set.

[0011] As an improvement, the first double-layer gear set includes a shaft body rotatably connected to the end of the three-axis bracket, and the shaft body is fixedly connected with the first upper gear and the first lower gear in sequence from top to bottom. The second double-layer gear set includes a sleeve body connected to the main shaft for sliding up and down, and the sleeve body is fixedly connected with the second upper gear and the second lower gear in sequence from top to bottom. The distance between the first upper gear and the first lower gear is larger than the distance between the second upper gear and the second lower gear. The sleeve body can slide up and down in the circular tray, and the sleeve body is fixedly connected to the main stirring impeller.

[0012] As an improvement, a plate body that can move up and down on the main shaft is provided on the top of the main stirring impeller. The plate body can drive the second double-layer gear set to move up and down through the main stirring impeller. A control component that can control the lifting of the plate body is provided between the plate body and the evaporating stirring drum.

[0013] As an improvement, the control component includes a transmission shaft that passes through the side wall of the evaporating stirring drum and is rotatably connected to the side wall of the evaporating stirring drum. The outer wall of the evaporating stirring drum is provided with a swing motor for rotating the transmission shaft. A connecting block is provided on the plate body. The connecting block is connected to a seesaw plate that is slidably and rotatably at one end away from the plate body, and the end of the seesaw plate is fixedly connected to the transmission shaft.

[0014] As an improvement, the gas-liquid separation component includes a cover body that cooperates with the evaporating mixing drum, and the cover body is provided with two symmetrically distributed air vents, and the cover body is provided with an air intake U-shaped tube connected to the air vents. L-shaped condenser tubes connected to the air intake U-shaped tube are provided on both sides of the top of the air intake U-shaped tube. A straight tube is detachably connected between the L-shaped condenser tube and the cover body, and the straight tube is sleeved with the L-shaped condenser tube, and the inner diameter of the straight tube is larger than the inner diameter of the L-shaped condenser tube. A condensate accumulation tube connected to the two L-shaped condenser tubes is provided at the bottom of the cover body, and a wind guide fan is provided in both ends of the air intake U-shaped tube.

[0015] As an improvement, a detachable liquid outlet door is provided at the bottom of the condensate accumulation tube.

[0016] As an improvement, the condenser includes a cylindrical frame that can be detachably mounted on the cover body, a heat sink is provided on the cylindrical frame, a heat pipe is provided at the bottom of the heat sink, a spiral heat pipe is connected to the outer surface of the heat pipe, the heat pipe and the spiral heat pipe are inserted into the condensate accumulation pipe, and a fan is provided on the top of the heat sink.

[0017] As an improvement, the fan is located below the air intake U-shaped pipe and between the two L-shaped condensation pipes.

[0018] After adopting the above structure, the present invention has the following advantages:

[0019] 1. Dynamic speed-adjustable stirring and coordinated control of efficient heat transfer: The linkage design of the double-layer transmission component, the main stirring impeller, and the spiral stirring wheel enables high-speed and low-speed dual-mode switching: the low-speed, high-torque mode is suitable for uniform mixing of high-viscosity raw materials, while the high-speed turbulence mode improves evaporation efficiency. Combined with the evaporation heater and scraper frame on the circular tray, a composite stirring field of radial shear and axial lifting is formed, which improves material heating uniformity by 40% and avoids local overheating and coking.

[0020] 2. Multi-stage gas-liquid separation and gradient condensation optimization: The gas-liquid separation component utilizes a three-stage condensation path design consisting of an inlet U-tube, double L-shaped condenser tubes, and straight tubes. Combined with the directional airflow control of the air guide fan, this increases the methanol vapor condensation efficiency to 98%. The waste heat recovery structure, with spiral heat pipes nested within straight tubes, transfers waste heat from condensation to preheat the inlet air, reducing energy consumption.

[0021] 3. Heat energy recycling and system integration optimization: The condenser's heat sink and fan form forced convection heat dissipation, while the heat pipe is used to recover the waste heat of the condensate to achieve heat energy recycling; the nested structure of the L-shaped condenser tube and the spiral heat pipe prolongs the gas phase residence time, ensures deep separation of low-boiling-point substances, and improves product purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an extraction device for methanol production according to the present invention.

[0023] Figure 2 This is a schematic diagram of the structural decomposition of an extraction device for methanol production according to the present invention. Figure 1 .

[0024] Figure 3 This is a schematic diagram of the structural decomposition of an extraction device for methanol production according to the present invention. Figure 2 .

[0025] Figure 4 The present invention is a schematic structural diagram of an evaporation and stirring device of an extraction device for methanol production.

[0026] Figure 5 The present invention is a schematic structural diagram of a double-layer transmission assembly of an extraction device for methanol production.

[0027] Figure 6 This is a schematic diagram of the structural decomposition of a double-layer transmission component of an extraction device for methanol production according to the present invention.

[0028] Figure 7 It is a structural schematic diagram of a gas-liquid separation component of an extraction device for methanol production according to the present invention.

[0029] Figure 8 The present invention is a schematic structural diagram of an air inlet U-shaped tube of an extraction device for methanol production.

[0030] Figure 9 The present invention is a schematic structural diagram of a condenser of an extraction device for methanol production.

[0031] Figure 10 The present invention is a schematic diagram of the structural decomposition of a condenser of an extraction device for methanol production.

[0032] As shown in the figure: 1. Power base; 2. Evaporation mixing drum; 3. Gas-liquid separation assembly; 301. Cover; 302. Vent; 303. Air inlet U-shaped pipe; 304. L-shaped condenser; 305. Straight pipe; 306. Condensate accumulation pipe; 307. Liquid outlet door; 308. Air guide fan; 4. Condenser; 401. Heat pipe; 402. Spiral heat pipe; 403. Heat sink; 405. Fan; 406. Cylinder frame; 5. Double-layer transmission assembly; 501. Three-axis bracket; 502. First double-layer gear set; 5021. First Lower gear; 5022, first upper gear; 5023, shaft; 503, second double-layer gear set; 5031, second lower gear; 5032, second upper gear; 5033, sleeve; 504, main shaft; 6, evaporation stirring device; 601, circular tray; 602, evaporation heater; 603, main stirring impeller; 604, spiral stirring wheel; 605, scraper frame; 606, control component; 6061, connecting block; 6062, seesaw; 6063, transmission shaft; 6064, swing motor; 607, plate. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings.

[0034] Combined with attachment Figure 1 , Attachment Figure 2 , Attachment Figure 7 and attached Figure 8 :

[0035] A methanol extraction device, comprising a power base 1, on which an evaporation stirring drum 2 is provided, on which a gas-liquid separation assembly 3 is provided, the gas-liquid separation assembly 3 comprising a cover 301 cooperating with the evaporation stirring drum 2, the cover 301 being provided with two symmetrically distributed air vents 302, the cover 301 being provided with an air intake U-shaped tube 303 communicating with the air vents 302, L-shaped condensation tubes 304 communicating with the air intake U-shaped tube 303 being provided at both sides of the top of the air intake U-shaped tube 303, a straight tube 305 being detachably connected between the L-shaped condensation tube 304 and the cover 301, the straight tube 305 being sleeved with the L-shaped condensation tube 304, and the inner diameter of the straight tube 305 being larger than that of the L-shaped condensation tube 304, a condensate accumulation tube 306 communicating with the two L-shaped condensation tubes 304 being provided at the bottom of the cover 301, and a wind guide fan 308 being provided at both ends of the air intake U-shaped tube 303;

[0036] A detachable liquid outlet door 307 is provided at the bottom of the condensate accumulation pipe 306;

[0037] Through this structure, the air intake U-tube 303 and the double L-shaped condenser tube 304 form a three-stage condensation path: when the evaporated gas is pushed into the air intake U-tube 303 by the air guide fan 308, the initial condensation is first completed at the bottom of the air intake U-tube 303, and the uncondensed gas enters the L-shaped condenser tubes 304 on both sides under the pressure of the air guide fan for secondary condensation. Finally, the condensation contact area is expanded through the straight tube 305 to complete the deep separation. The detachable straight tube design facilitates the cleaning of crystals, and the condensate accumulation tube 306 is uniformly collected. The liquid outlet gate 307 can drain the liquid regularly without interrupting production, which improves the efficiency compared with the traditional single-stage condensation.

[0038] Combined with attachment Figure 1 , Attachment Figure 3 , Attachment Figure 7 , Attachment Figure 9 and attached Figure 10 :

[0039] The evaporation mixing drum 2 is further provided with a condenser 4, which includes a cylindrical frame 406 detachably mounted on the cover 301, a heat sink 403 is provided on the cylindrical frame 406, a heat pipe 401 is provided at the bottom of the heat sink 403, a spiral heat pipe 402 is connected to the outer surface of the heat pipe 401, the heat pipe 401 and the spiral heat pipe 402 are inserted into the condensate accumulation pipe 306, and a fan 405 is provided on the top of the heat sink 403;

[0040] The fan 405 is located below the air inlet U-shaped tube 303 and between the two L-shaped condenser tubes 304;

[0041] This structure allows spiral heat pipes 402 to be nested within the outer wall of straight tubes 305, creating a dual-channel heat exchange system. The inner layer releases heat through methanol vapor condensation, while the outer layer transfers excess heat to heat sink 403 via heat pipe 401. Fan 405 generates upward and downward convection to enhance heat dissipation. Tests have shown that this structure increases the condensation temperature difference from 15°C in conventional designs to 22°C. Furthermore, the spiral structure extends airflow residence time by 0.8 seconds, ensuring sufficient condensation of low-boiling-point substances.

[0042] Combined with attachment Figure 1 , Attachment Figure 2 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 6 :

[0043] The evaporation and stirring drum 2 is provided with an evaporation and stirring device 6 that can fully mix and heat the raw materials for evaporation. The evaporation and stirring device 6 includes a circular tray 601 that can rotate at the bottom of the evaporation and stirring drum 2. The circular tray 601 is provided with a number of evenly distributed evaporation heaters 602. A main stirring impeller 603 that rotates relative to the circular tray 601 and moves up and down is provided at the central axis of the circular tray 601. The circular tray 601 is provided with two symmetrically distributed spiral stirring wheels 604 for liquid lifting. Two symmetrically distributed scraper frames 605 are fixedly installed on the circular tray 601, and the scraper frames 605 are in contact with the inner wall of the evaporation and stirring drum 2.

[0044] Through this structure, the main stirring impeller 603 and the spiral stirring wheel 604 form a differential stirring field: when the circular tray 601 rotates at a speed of ω1, the spiral stirring wheel 604 vertically lifts the bottom material at a speed of ω1+Δω, and cooperates with the radial shearing action of the scraper frame 605 to uniformly heat the material by the evaporation heater 602 during the radial reciprocating motion.

[0045] Combined with attachment Figure 1 , Attachment Figure 2 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 6 :

[0046] The power base 1 is provided with a double-layer transmission assembly 5 that can change the operating speed of the evaporation and stirring device 6. The double-layer transmission assembly 5 includes a three-axis bracket 501 located in the power base 1. The three-axis bracket 501 can be driven to rotate by a motor in the power base 1. Both ends of the three-axis bracket 501 are rotatably connected to a first double-layer gear set 502 fixed to a spiral stirring wheel 604. A main shaft 504 is fixed to the three-axis bracket 501. The main shaft 504 is outer-connected to a second double-layer gear set 503 located below the circular tray 601. The main stirring impeller 603 can move up and down on the main shaft 504 and is fixed to the second double-layer gear set 503.

[0047] The first double-layer gear set 502 includes a shaft body 5023 rotatably connected to the end of the three-axis bracket 501, and the shaft body 5023 is fixedly connected to the first upper gear 5022 and the first lower gear 5021 from top to bottom. The second double-layer gear set 503 includes a sleeve body 5033 slidably connected to the main shaft 504 up and down, and the sleeve body 5033 is fixedly connected to the second upper gear 5032 and the second lower gear 5031 from top to bottom. The distance between the first upper gear 5022 and the first lower gear 5021 is larger than the distance between the second upper gear 5032 and the second lower gear 5031. The sleeve body 5033 can slide up and down in the circular tray 601, and the sleeve body 5033 is fixedly connected to the main stirring impeller 603;

[0048] A plate 607 is provided on the top of the main stirring impeller 603 and can move up and down on the main shaft 504. The plate 607 can drive the second double-layer gear set 503 to move up and down through the main stirring impeller 603. A control component 606 is provided between the plate 607 and the evaporation stirring drum 2 to control the lifting of the plate 607.

[0049] In order to make the first double-layer gear set 502 rotate around the second double-layer gear set 503 while also being able to rotate, as shown in the attached Figure 2 An inner gear ring meshing with the first lower gear 5021 is provided on the inner wall of the power base 1. At this time, when the three-axis bracket 501 rotates, it can drive the first double-layer gear set 502 to revolve. Since the first lower gear 5021 is meshed with the inner gear ring, the first lower gear 5021 will roll on the inner gear ring, that is, the first lower gear 5021 can rotate, and the rotation direction is opposite to the rotation direction of the three-axis bracket 501. At this time, the first double-layer gear set 502 can drive the second double-layer gear set 503 to rotate;

[0050] Through this structure, when the second double-layer gear set 503 moves upward along the main shaft 504, the second upper gear 5032 engages with the first upper gear 5022, forming a high-speed transmission mode (transmission ratio 1:1.8); when moving downward, the second lower gear 5031 engages with the first lower gear 5021, switching to a low-speed, high-torque mode (transmission ratio 1:0.6). A single motor can achieve two-level speed regulation, reducing energy consumption.

[0051] Combined with attachment Figure 4 :

[0052] The control component 606 includes a transmission shaft 6063 that passes through the side wall of the evaporating stirring drum 2 and is rotatably connected to the side wall of the evaporating stirring drum 2. The outer wall of the evaporating stirring drum 2 is provided with a swing motor 6064 for rotating the transmission shaft 6063. A connecting block 6061 is provided on the plate body 607. The connecting block 6061 is slidably and rotatably connected to a seesaw 6062 at one end away from the plate body 607. The end of the seesaw 6062 is fixedly connected to the transmission shaft 6063.

[0053] With this structure, when the swing motor 6064 drives the transmission shaft to rotate ±30°, the seesaw 6062 converts the rotational motion into a vertical displacement (stroke ±15mm) of the plate 607, thereby adjusting the position of the second gear set in real time.

[0054] When the present invention is implemented, it is run according to the following steps:

[0055] 1. Raw material mixing and dynamic speed regulation stage: Start the drive motor in the power base 1 to drive the three-axis bracket 501 to rotate at the basic speed. At this time:

[0056] The second double-layer gear set 503 is in the initial neutral position, with the second lower gear 5031 meshing with the first lower gear 5021, forming a reduction ratio of 1:0.6. The main stirring impeller 603 operates in a low-speed, high-torque mode, pushing the high-viscosity raw material upward from the bottom of the evaporation mixing drum 2;

[0057] The spiral stirring wheel 604, under the action of differential speed (35% speed difference with the circular tray 601), lifts the bottom material axially to the area of ​​evaporation heater 602. The scraper frame 605 scrapes the cylinder wall with a gap of 2-3mm to prevent carbonization and coking of the raw materials.

[0058] 2. Evaporation intensity adjustment stage:

[0059] When the viscosity of the material drops to a set threshold, the swing motor 6064 drives the transmission shaft 6063 to rotate +25°, pushing the plate 607 upward through the rocker 6062;

[0060] The housing 5033 simultaneously moves upward, meshing the second upper gear 5032 with the first upper gear 5022, switching to a 1:1.8 speed-increasing transmission ratio. The main stirring impeller 603 speed increases to 2.1 times its initial value, creating turbulent flow and enhancing heat transfer. The power of the evaporation heater 602 simultaneously increases to 800 W / m², achieving a dynamic match between evaporation rate and stirring intensity.

[0061] 3. Gas-liquid separation and multi-stage condensation stage:

[0062] The generated methanol vapor is pushed into the air inlet U-shaped pipe 303 at a flow rate of 1.2 m / s through the air guide fan 308:

[0063] First-stage condensation: 80% of methanol vapor is condensed at the bottom of the inlet U-tube 303 (temperature maintained at 45°C);

[0064] Secondary condensation: Uncondensed gas enters the L-shaped condenser tube 304 (with a built-in spiral guide vane) and is further condensed by 25°C cooling water. The droplets are then decelerated and deposited in the expanded diameter section of the straight tube 305.

[0065] Level 3 recovery: The residual gas phase material is deeply condensed in the gradient temperature zone (from 60°C to 18°C) formed by the spiral heat pipe 402 and the heat sink 403.

[0066] 4. Heat recovery and system maintenance stage:

[0067] The waste heat (about 55°C) collected in the condensate accumulation pipe 306 is transferred to the heat sink 403 through the heat pipe 401. The forced convection of the fan 405 provides preheating for the intake U-shaped pipe 303 (raising the intake air temperature by 8-10°C), thus reducing the energy consumption of steam reheating.

[0068] When the machine is shut down for maintenance, the straight tube 305 and the cylindrical frame 406 are disassembled, and the inner wall of the L-shaped condenser tube 304 and the scraper frame 605 can be washed with high-pressure water, and the cleaning time is shortened compared with the traditional structure.

[0069] The above description of the present invention and its embodiments is non-limiting, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above description and, without departing from the purpose of the present invention, designs a structure and embodiment similar to the technical solution without creatively designing, they shall fall within the scope of protection of the present invention.

Claims

1. An extraction device for methanol production, comprising a power base (1), an evaporation stirring drum (2) provided on the power base (1), a gas-liquid separation component (3) provided on the evaporation stirring drum (2), and a condenser (4) provided on the evaporation stirring drum (2), characterized in that: The evaporation stirring drum (2) is provided with an evaporation stirring device (6) capable of fully mixing and heating the raw materials for evaporation, and the power base (1) is provided with a double-layer transmission assembly (5) capable of changing the operating speed of the evaporation stirring device (6); The evaporation stirring device (6) comprises a circular tray (601) rotatable at the bottom of the evaporation stirring drum (2), a plurality of evenly distributed evaporation heaters (602) are provided on the circular tray (601), a main stirring impeller (603) is provided at the central axis of the circular tray (601) and rotates relative to the circular tray (601) and moves up and down, two symmetrically distributed spiral stirring wheels (604) for lifting liquid are provided on the circular tray (601), and two symmetrically distributed scraper frames (605) are fixedly mounted on the circular tray (601), and the scraper frames (605) are in contact with the inner wall of the evaporation stirring drum (2); The double-layer transmission assembly (5) includes a three-axis bracket (501) located in the power base (1), the three-axis bracket (501) can be driven to rotate by the motor in the power base (1), both ends of the three-axis bracket (501) are rotatably connected to a first double-layer gear set (502) fixedly connected to the spiral stirring wheel (604), a main shaft (504) is fixedly connected to the three-axis bracket (501), and the main shaft (504) is outer-connected to a second double-layer gear set (503) located below the circular tray (601), and the main stirring impeller (603) can move up and down on the main shaft (504) and is fixedly connected to the second double-layer gear set (503); The first double-layer gear set (502) comprises a shaft (5023) rotatably connected to the end of the three-axis bracket (501), the shaft (5023) being fixedly connected to a first upper gear (5022) and a first lower gear (5021) in sequence from top to bottom; the second double-layer gear set (503) comprises a sleeve (5033) slidably connected to the main shaft (504) in sequence from top to bottom, the sleeve (5033) being fixedly connected to a second upper gear (5032) and a second lower gear (5031) in sequence from top to bottom, the distance between the first upper gear (5022) and the first lower gear (5021) being greater than the distance between the second upper gear (5032) and the second lower gear (5031), the sleeve (5033) being slidable up and down within the circular tray (601), and the sleeve (5033) being fixedly connected to the main stirring impeller (603); A plate (607) is provided on the top of the main stirring impeller (603) and is movable up and down on the main shaft (504). The plate (607) can drive the second double-layer gear set (503) to move up and down through the main stirring impeller (603). A control component (606) is provided between the plate (607) and the evaporation stirring drum (2) to control the lifting of the plate (607).

2. The extraction device for methanol production according to claim 1, characterized in that: The control assembly (606) includes a transmission shaft (6063) that passes through the side wall of the evaporation stirring drum (2) and is rotatably connected to the side wall of the evaporation stirring drum (2); an outer wall of the evaporation stirring drum (2) is provided with a swing motor (6064) for rotating the transmission shaft (6063); a connecting block (6061) is provided on the plate body (607); an end of the connecting block (6061) away from the plate body (607) is slidably and rotatably connected to a seesaw (6062); and an end of the seesaw (6062) is fixedly connected to the transmission shaft (6063).

3. The extraction device for methanol production according to claim 1, characterized in that: The gas-liquid separation component (3) comprises a cover body (301) matched with the evaporation stirring drum (2), the cover body (301) is provided with two symmetrically distributed air vents (302), the cover body (301) is provided with an air intake U-shaped tube (303) communicating with the air vents (302), the top two sides of the air intake U-shaped tube (303) are provided with L-shaped condensation tubes (304) communicating with the air intake U-shaped tube (303), a straight tube (305) is detachably connected between the L-shaped condensation tube (304) and the cover body (301), the straight tube (305) is sleeved with the L-shaped condensation tube (304), and the inner diameter of the straight tube (305) is larger than the inner diameter of the L-shaped condensation tube (304), the bottom of the cover body (301) is provided with a condensate accumulation tube (306) communicating with the two L-shaped condensation tubes (304), and both ends of the air intake U-shaped tube (303) are provided with air guide fans (308).

4. The extraction device for methanol production according to claim 3, characterized in that: A detachable liquid outlet door (307) is provided at the bottom of the condensate accumulation tube (306).

5. The extraction device for methanol production according to claim 3, characterized in that: The condenser (4) comprises a cylindrical frame (406) detachably mounted on the cover (301), a heat sink (403) being provided on the cylindrical frame (406), a heat pipe (401) being provided at the bottom of the heat sink (403), a spiral heat pipe (402) being connected to the outer surface of the heat pipe (401), the heat pipe (401) and the spiral heat pipe (402) being inserted into the condensate accumulation pipe (306), and a fan (405) being provided on the top of the heat sink (403).

6. The extraction device for methanol production according to claim 5, characterized in that: The fan (405) is located below the air intake U-shaped tube (303) and between the two L-shaped condensing tubes (304).

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