Chloromethane vaporization system

Abstract

The invention discloses a chloromethane vaporization system which comprises a supporting seat, the supporting seat is mounted at the top of a bubble tower, an adjusting mechanism and a compensation mechanism are mounted on the left side and the right side of the upper surface of the supporting seat respectively, a storage tank and a distillation mechanism are mounted on the left side and the right side of the top of the compensation mechanism respectively, and the storage tank is used for storing a high-concentration catalyst; the distillation mechanism is connected with the top of the bubble tower through a pipeline, and generated chloromethane gas is introduced into the distillation mechanism; the adjusting mechanism comprises a joint, one end of the joint is connected with a gas distributor on the bubble tower through a pipeline, the other end of the joint introduces gas-phase methanol and hydrogen chloride mixed gas through a pipeline, a piston cylinder is vertically mounted on the outer wall of the joint, and the piston cylinder is fixed with the supporting seat. Catalyst compensation is realized; preparation of chloromethane gas is prevented from being inhibited; the yield of chloromethane is increased; flowing of accumulated water in a flow channel is promoted, so that the chloromethane gas is fully cooled, the water content of chloromethane is reduced, and the purification effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of methyl chloride preparation, in particular to a methyl chloride vaporization system. Background Art

[0002] Methyl chloride, also known as methyl chloride, is an organic compound with the chemical formula CH3Cl. It is a colorless gas at room temperature and pressure. It is slightly soluble in water and soluble in ethanol, chloroform, benzene, carbon tetrachloride, glacial acetic acid, etc. It is mainly used as a raw material for silicone, and is also used as a solvent, refrigerant, fragrance, etc.

[0003] The methanol method is the most commonly used method for preparing chloromethane. Gaseous methanol and hydrogen chloride are mixed in proportion and then introduced into the gas distributor of a bubble tower. The gas is dispersed in the catalyst in the bubble tower, and a catalytic reaction occurs. The generated chloromethane gas is discharged from the top of the bubble tower. After the chloromethane is dehydrated by distillation equipment, the chloromethane is purified.

[0004] The greater the pressure of the gaseous methanol and hydrogen chloride mixture, the greater the amount of catalyst consumed per unit time. As the catalytic reaction proceeds, the catalyst usage cannot be compensated. As the catalyst content decreases, the reaction rate also decreases, and the process needs to be shut down to replace the catalyst, resulting in low efficiency in chloromethane preparation. When chloromethane is purified, water droplets produced by liquefaction will hang on the wall, the contact area between the chloromethane gas and the distiller is reduced, the heat exchange decreases, and the dehydration effect is poor. Therefore, a chloromethane vaporization system is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a chloromethane vaporization system to at least solve the problem that the prior art cannot perform catalyst compensation and the chloromethane dehydration is insufficient.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a chloromethane vaporization system, comprising a support base, the support base being mounted on the top of a bubbling tower, an adjustment mechanism and a compensation mechanism being mounted on the left and right sides of the upper surface of the support base, a storage tank and a distillation mechanism being mounted on the left and right sides of the top of the compensation mechanism, respectively, the storage tank being used to store a high-concentration catalyst, and the distillation mechanism being connected to the top of the bubbling tower via a pipeline to introduce the generated chloromethane gas into the distillation mechanism; The regulating mechanism includes a joint, one end of which is connected to the gas distributor on the bubble tower through a pipeline, and the other end of the joint introduces a gaseous methanol and hydrogen chloride mixture through a pipeline. A piston cylinder is vertically installed on the outer wall of the joint, and the piston cylinder is fixed to the support seat. A piston is inserted into the inner cavity of the piston cylinder. As the pressure of the methanol and hydrogen chloride mixture increases or decreases, the piston rises or falls. A rack is installed on the top of the piston, and a toggle assembly is installed on the top of the piston cylinder. A speed regulator is installed on the right side of the toggle assembly. By rising or falling the rack, the toggle assembly toggle the speed regulator knob to increase or decrease.

[0007] Preferably, the toggle assembly includes a box body mounted on the top of the piston cylinder, a first rotating shaft is mounted at the center of the inner cavity of the box body through a bearing, and the right end of the first rotating shaft is connected to the speed regulator knob, a gear meshing with the rack is keyed to the outer wall of the first rotating shaft, a limiting groove is provided on the side wall of the gear, and a limiting rod is installed on the rear side of the inner cavity of the box body, and the rotation angle of the gear is limited by the cooperation between the limiting rod and the limiting groove; The piston is raised or lowered by changing the gas pressure of the mixed gas of gaseous methanol and hydrogen chloride, and the speed regulator knob is rotated under the transmission of the rack and the first gear to adjust the motor speed.

[0008] Preferably, the compensation mechanism includes a blanking assembly and a vibration assembly, and the blanking assembly and the vibration assembly are respectively installed on the left and right sides of the upper surface of the support base. The front end of the blanking assembly and the vibration assembly is installed with a transmission assembly to make them move. The input end of the transmission assembly is installed with a motor, and the motor is electrically connected to the speed regulator. The motor speed is adjusted by the speed regulator, and then the speed at which the transmission assembly drives the blanking assembly and the vibration assembly to move is adjusted.

[0009] Preferably, the unloading assembly includes a material box mounted on the upper surface of the support base, and the top opening of the material box is connected to the bottom of the storage tank, and the bottom opening of the material box is connected to the bubble tower through a pipeline. A rotatable drum is inserted into the inner cavity of the material box, and a plurality of grooves are equidistantly provided on the outer wall of the drum along the circumference. As the drum rotates, the grooves can carry the high-concentration catalyst to move, and a second rotating shaft is installed at the front end of the drum; When the drum rotates, the grooves can carry high-concentration catalysts to move, and the discharge amount is controlled according to the air pressure to compensate for the catalyst in the bubble tower.

[0010] Preferably, the vibration assembly includes a vibration box installed on the right side of the upper surface of the support base, two sliding rods are installed on the right side of the inner cavity of the vibration box, and the outer wall of the sliding rod is sleeved with a knocking block that can be raised and lowered. When the knocking block descends, it collides with the vibration box, causing the vibration box to vibrate. A blocking rod is laterally installed on the top of the left wall of the knocking block. A third rotating shaft is installed on the left side of the inner cavity of the vibration box through a bearing, and two left and right opposite rocking rods are installed on the outer wall of the third rotating shaft. A roller is installed on the end of the rocking rod away from the third rotating shaft; The third rotating shaft drives the pendulum rod to rotate counterclockwise, and the roller lifts the blocking rod, allowing the striking block to repeatedly perform free fall motion, causing vibration when hitting the vibration box, thereby causing the distillation mechanism to vibrate.

[0011] Preferably, the two rocker rods have different lengths.

[0012] Preferably, the roller and the blocking rod are in the same plane.

[0013] Preferably, the distillation mechanism includes a heat conducting plate mounted on the upper surface of the vibration box, a flow channel is provided inside the heat conducting plate, the top of the flow channel is connected to the top of the bubbling tower via a pipe, and the chloromethane gas generated by the catalytic reaction in the bubbling tower is introduced into the flow channel. Evaporators are installed on both the front and rear sides of the flow channel. The evaporators absorb heat from the heat conducting plate, thereby cooling the heat conducting plate and liquefying water vapor in the chloromethane gas. A collection tank is screwed to the right side of the lower surface of the heat conducting plate to collect accumulated water generated by dehydration of the chloromethane gas. When the chloromethane gas passes through the flow channel, the chloromethane gas fully contacts the heat conduction plate, and the water vapor is cooled and liquefied, thereby dehydrating and purifying the chloromethane gas.

[0014] Preferably, the flow channels are distributed in a wave-like manner inside the heat conducting plate, and the ventilation direction of the flow channels is always inclined downward.

[0015] The methyl chloride vaporization system proposed by the present invention has the following beneficial effects: By increasing or decreasing the pressure of the methanol and hydrogen chloride mixed gas, the piston height rises or falls, and the first rotating shaft rotates clockwise or counterclockwise under the transmission condition of the rack and the first gear, thereby adjusting the speed of the motor controlled by the speed regulator; 1. Under the action of the transmission assembly, the second shaft drives the drum to rotate, and the groove carries the high-concentration catalyst to move. The catalyst is replenished in the bubbling tower according to the reaction amount of the methanol and hydrogen chloride mixed gas. Therefore, catalyst compensation is achieved, preventing the inhibition of chloromethane gas production and increasing chloromethane production; 2. Under the action of the transmission assembly, the third shaft drives the rocker arm to rotate, the roller drags the baffle rod upward, and the knocking block hits the vibration box under the acceleration of gravity, causing the heat conduction plate to vibrate, promoting the flow of accumulated water in the flow channel, allowing the chloroform gas to be fully cooled, reducing the water content of chloroform and improving the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 Schematic diagram of the regulating mechanism structure; Figure 3 It is a left side cross-sectional view of the adjustment mechanism; Figure 4 This is a front cross-sectional view of the distillation mechanism; Figure 5 It is the left side cross-sectional view of the blanking component; Figure 6 Schematic diagram of the vibration component structure; Figure 7 It is a schematic diagram of the transmission component structure.

[0017] In the figure: 1. Support base; 2. Adjustment mechanism; 3. Compensation mechanism; 4. Storage tank; 5. Distillation mechanism; 21. Joint; 22. Piston cylinder; 23. Piston; 24. Rack; 25. Toggle assembly; 26. Speed ​​regulator; 251. Box body; 252. First rotating shaft; 253. Gear; 254. Limiting groove; 255. Limiting rod; 31. Feeding assembly; 32. Vibration assembly; 33. Transmission assembly; 34. Motor ; 311, material box; 312, rotating drum; 313, groove; 314, second rotating shaft; 321, vibration box; 322, sliding rod; 323, knocking block; 324, blocking rod; 325, third rotating shaft; 326, rocker; 327, roller; 331, dust cover; 332, first sprocket; 333, second sprocket; 334, chain; 51, heat conduction plate; 52, flow channel; 53, evaporator; 54, collecting tank. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 7 As shown, the present invention provides a technical solution: a chloromethane vaporization system, comprising a support base 1, the support base 1 is mounted on the top of a bubbling tower, an adjustment mechanism 2 and a compensation mechanism 3 are respectively mounted on the left and right sides of the upper surface of the support base 1, a storage tank 4 and a distillation mechanism 5 are respectively mounted on the left and right sides of the top of the compensation mechanism 3, the storage tank 4 is used to store high-concentration catalyst, and the distillation mechanism 5 is connected to the top of the bubbling tower through a pipeline to introduce the generated chloromethane gas into the distillation mechanism 5; The regulating mechanism 2 includes a joint 21, one end of which is connected to the gas distributor on the bubble tower through a pipeline, and the other end of the joint 21 is introduced into the gaseous methanol and hydrogen chloride mixed gas through a pipeline. A piston cylinder 22 is vertically installed on the outer wall of the joint 21, and the piston cylinder 22 is fixed to the support seat 1. A piston 23 is inserted into the inner cavity of the piston cylinder 22. As the pressure of the methanol and hydrogen chloride mixed gas increases or decreases, the piston 23 rises or falls. A rack 24 is installed on the top of the piston 23, and a toggle assembly 25 is installed on the top of the piston cylinder 22. A speed regulator 26 is installed on the right side of the toggle assembly 25. By rising or falling by the rack 24, the toggle assembly 25 toggles the knob of the speed regulator 26 to increase or decrease.

[0020] As a preferred embodiment, further, the toggle assembly 25 includes a box body 251 installed on the top of the piston cylinder 22, and a first rotating shaft 252 is installed at the center position of the inner cavity of the box body 251 through a bearing, and the right end of the first rotating shaft 252 is connected to the knob of the speed regulator 26, and the outer wall key of the first rotating shaft 252 is connected to the gear 253 meshing with the rack 24, and a limiting groove 254 is provided on the side wall of the gear 253. A limiting rod 255 is installed on the rear side of the inner cavity of the box body 251, and the rotation angle of the gear 253 is limited by the cooperation of the limiting rod 255 and the limiting groove 254.

[0021] As a preferred solution, further, the compensation mechanism 3 includes a blanking component 31 and a vibration component 32, and the blanking component 31 and the vibration component 32 are respectively installed on the left and right sides of the upper surface of the support base 1, and the front end of the blanking component 31 and the vibration component 32 is installed with a transmission component 33 for making them move, and the input end of the transmission component 33 is installed with a motor 34, and the motor 34 is electrically connected to the speed regulator 26. The speed of the motor 34 is adjusted by the speed regulator 26, and then the speed at which the transmission component 33 drives the blanking component 31 and the vibration component 32 to move is adjusted.

[0022] As a preferred solution, further, the unloading assembly 31 includes a material box 311 installed on the upper surface of the support base 1, and the top opening of the material box 311 is connected to the bottom of the storage tank 4, and the bottom opening of the material box 311 is connected to the bubble tower through a pipe. A rotatable drum 312 is inserted into the inner cavity of the material box 311, and a plurality of grooves 313 are equidistantly provided on the outer wall of the drum 312 along the circumferential direction. As the drum 312 rotates, the grooves 313 can carry the high-concentration catalyst to move, and a second rotating shaft 314 is installed at the front end of the drum 312.

[0023] As a preferred solution, further, the vibration component 32 includes a vibration box 321 installed on the right side of the upper surface of the support seat 1, and two sliding rods 322 are installed on the right side of the inner cavity of the vibration box 321. The outer wall of the sliding rod 322 is sleeved with a knocking block 323 that can be lifted and lowered. When the knocking block 323 descends, it collides with the vibration box 321, causing the vibration box 321 to vibrate. A baffle 324 is laterally installed on the top of the left wall of the knocking block 323. A third rotating shaft 325 is installed on the left side of the inner cavity of the vibration box 321 through a bearing. Two left and right opposite rocker rods 326 are installed on the outer wall of the third rotating shaft 325. The two rocker rods 326 have different lengths, which change the lifting height of the knocking block 323 and the vibration power of the vibration box 321, which is beneficial to the flow of water droplets in the flow channel 52. A roller 327 is installed on the end of the rocker rod 326 away from the third rotating shaft 325. The roller 327 and the baffle rod 324 are in the same plane to ensure that the roller 327 can touch the baffle rod 324 when rotating.

[0024] As a preferred solution, further, the transmission assembly 33 includes a dust cover 331 installed on the front of the material box 311 and the vibration box 321, and the left and right sides of the inner cavity of the dust cover 331 are respectively installed with a rotatable first sprocket 332 and a second sprocket 333, the first sprocket 332 is connected to the second rotating shaft 314, the second sprocket 333 is connected to the third rotating shaft 325, and the motor 34 drives the second sprocket 333 to rotate counterclockwise, and the outer walls of the first sprocket 332 and the second sprocket 333 are chained with a chain 334.

[0025] As a preferred embodiment, further, the distillation mechanism 5 includes a heat conduction plate 51 installed on the upper surface of the vibration box 321, and a flow channel 52 is opened inside the heat conduction plate 51. The top of the flow channel 52 is connected to the top of the bubbling tower by a pipe, and the chloromethane gas generated by the catalytic reaction in the bubbling tower is introduced into the flow channel 52. The flow channel 52 is distributed in a wavy shape inside the heat conduction plate 51, and the ventilation direction of the flow channel 52 is always tilted downward, which prolongs the residence time of the chloromethane gas in the heat conduction plate 51. The inclined surface is conducive to the flow of accumulated water. Evaporators 53 are installed on the front and back sides of the flow channel 52. The evaporator 53 absorbs the heat of the heat conduction plate 51, so that the heat conduction plate 51 is cooled and the water vapor in the chloromethane gas is liquefied. A collection tank 54 is screwed to the right side of the lower surface of the heat conduction plate 51 to collect the accumulated water generated by the dehydration of the chloromethane gas.

[0026] The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process. The specific operations are as follows.

[0027] In step 1, the methanol and hydrogen chloride gas mixture enters the bubble column through the connector 21. The greater the gas pressure, the more catalyst is consumed in the bubble column. As the gas pressure increases or decreases, the piston 23 rises or falls, and the first rotating shaft 252 rotates clockwise or counterclockwise under the transmission conditions of the rack 24 and the gear 253. The first rotating shaft 252 turns the knob of the speed regulator 26 to adjust the speed of the motor 34 according to the pressure change of the methanol and hydrogen chloride gas mixture. Step 2: The motor 34 drives the second sprocket 333 to rotate. Under the transmission condition of the chain 334, the first sprocket 332 rotates, and the blanking assembly 31 and the vibration assembly 32 are started; The second rotating shaft 314 drives the rotating drum 312 to rotate, and the groove 313 on the rotating drum 312 carries the high-concentration catalyst to move, allowing the high-concentration catalyst to enter the bubble column at a uniform speed, and the catalyst is compensated according to the amount of methanol and hydrogen chloride mixed gas used; Step 3: The generated chloromethane gas enters the flow channel 52 from the top of the bubble tower. The evaporator 53 absorbs the heat from the heat conducting plate 51. The heat conducting plate 51 cools the chloromethane gas. The water vapor hidden in the chloromethane gas is cooled and liquefied, and then hangs on the inner wall of the flow channel 52 to purify the chloromethane. The third rotating shaft 325 drives the rocker arm 326 to rotate counterclockwise, and the roller 327 drags the baffle 324 upward, allowing the knocking block 323 to rise along the slide bar 322. When the roller 327 is separated from the baffle 324, the knocking block 323 descends under the action of its own gravity, and after colliding with the vibration box 321, the heat conduction plate 51 vibrates, causing the water droplets hanging on the wall to gather together, and the accumulated water is allowed to flow into the collection tank 54 to clear the water accumulated on the inner wall of the flow channel 52, prevent the contact area between the chloromethyl gas and the flow channel 52 from being reduced, and ensure the distillation effect.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A chloromethane vaporization system, comprising a support base (1), wherein the support base (1) is installed on the top of a bubbling tower, characterized in that: An adjusting mechanism (2) and a compensating mechanism (3) are respectively installed on the left and right sides of the upper surface of the support base (1); a storage tank (4) and a distillation mechanism (5) are respectively installed on the left and right sides of the top of the compensating mechanism (3); the storage tank (4) is used to store high-concentration catalysts; the distillation mechanism (5) is connected to the top of the bubbling tower through a pipeline to introduce the generated chloromethane gas into the distillation mechanism (5); The regulating mechanism (2) includes a joint (21), one end of which is connected to a gas distributor on a bubble tower through a pipeline, and the other end of the joint (21) is introduced into a gaseous methanol and hydrogen chloride mixed gas through a pipeline. A piston cylinder (22) is vertically installed on the outer wall of the joint (21), and the piston cylinder (22) is fixed to the support seat (1). A piston (23) is inserted into the inner cavity of the piston cylinder (22). As the pressure of the methanol and hydrogen chloride mixed gas increases or decreases, the piston (23) rises or falls. A rack (24) is installed on the top of the piston (23). A toggle assembly (25) is installed on the top of the piston cylinder (22). A speed regulator (26) is installed on the right side of the toggle assembly (25). When the rack (24) rises or falls, the toggle assembly (25) toggle the knob of the speed regulator (26) to increase or decrease.

2. A chloromethane vaporization system according to claim 1, characterized in that: The toggle assembly (25) includes a box body (251) mounted on the top of the piston cylinder (22), a first rotating shaft (252) is mounted at the center of the inner cavity of the box body (251) via a bearing, and the right end of the first rotating shaft (252) is connected to the knob of the speed regulator (26), the outer wall of the first rotating shaft (252) is key-connected to a gear (253) meshing with the rack (24), a limiting groove (254) is provided on the side wall of the gear (253), and a limiting rod (255) is mounted on the rear side of the inner cavity of the box body (251), and the rotation angle of the gear (253) is limited by the limiting rod (255) and the limiting groove (254).

3. A chloromethane vaporization system according to claim 2, characterized in that: The compensation mechanism (3) includes a blanking component (31) and a vibration component (32), and the blanking component (31) and the vibration component (32) are respectively installed on the left and right sides of the upper surface of the support base (1). The front ends of the blanking component (31) and the vibration component (32) are installed with a transmission component (33) for making them move. The input end of the transmission component (33) is installed with a motor (34), and the motor (34) is electrically connected to the speed regulator (26). The speed of the motor (34) is adjusted by the speed regulator (26), thereby adjusting the speed at which the transmission component (33) drives the blanking component (31) and the vibration component (32) to move.

4. A chloromethane vaporization system according to claim 3, characterized in that: The unloading assembly (31) includes a material box (311) mounted on the upper surface of the support base (1), and the top opening of the material box (311) is connected to the bottom of the storage tank (4), and the bottom opening of the material box (311) is connected to the bubble tower through a pipeline. A rotatable drum (312) is inserted into the inner cavity of the material box (311), and a plurality of grooves (313) are equidistantly provided on the outer wall of the drum (312) along the circumference. As the drum (312) rotates, the grooves (313) can carry the high-concentration catalyst to move, and a second rotating shaft (314) is installed at the front end of the drum (312).

5. A chloromethane vaporization system according to claim 4, characterized in that: The vibration assembly (32) includes a vibration box (321) installed on the right side of the upper surface of the support base (1), two slide bars (322) are installed on the right side of the inner cavity of the vibration box (321), and the outer wall of the slide bar (322) is sleeved with a knocking block (323) that can be raised and lowered. When the knocking block (323) descends, it collides with the vibration box (321), causing the vibration box (321) to vibrate. A blocking rod (324) is installed horizontally on the top of the left side wall of the knocking block (323). A third rotating shaft (325) is installed on the left side of the inner cavity of the vibration box (321) through a bearing, and two left and right opposite rocking rods (326) are installed on the outer wall of the third rotating shaft (325), and a roller (327) is installed on the end of the rocking rod (326) away from the third rotating shaft (325).

6. A chloromethane vaporization system according to claim 5, characterized in that: The two pendulum rods (326) have different lengths.

7. A chloromethane vaporization system according to claim 6, characterized in that: The roller (327) and the blocking rod (324) are in the same plane.

8. A chloromethane vaporization system according to claim 7, characterized in that: The distillation mechanism (5) includes a heat conducting plate (51) mounted on the upper surface of the vibration box (321), a flow channel (52) is provided inside the heat conducting plate (51), the top of the flow channel (52) is connected to the top of the bubbling tower via a pipe, and the chloromethane gas generated by the catalytic reaction in the bubbling tower is introduced into the flow channel (52), and evaporators (53) are installed on both the front and rear sides of the flow channel (52), and the evaporators (53) absorb the heat of the heat conducting plate (51), so as to cool the heat conducting plate (51) and liquefy the water vapor in the chloromethane gas. A collecting tank (54) is screwed to the right side of the lower surface of the heat conducting plate (51) to collect the accumulated water generated by the dehydration of the chloromethane gas.

9. A chloromethane vaporization system according to claim 8, characterized in that: The flow channel (52) is distributed in a wave-like manner inside the heat conducting plate (51), and the ventilation direction of the flow channel (52) is always inclined downward.

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