Hexafluoroisopropyl methyl ether separation tower with good absorption effect and preparation process of hexafluoroisopropyl methyl ether separation tower

Abstract

The invention discloses a hexafluoroisopropyl methyl ether separation tower with a good absorption effect and a preparation process thereof, and relates to the technical field of separation towers, the hexafluoroisopropyl methyl ether separation tower comprises a tower body, a bevel plate is fixedly mounted on the inner wall of the tower body, supporting legs are fixedly mounted at the bottom of the tower body, an air inlet box is fixedly mounted at the front part of the tower body, and a refrigeration box is fixedly mounted at the front part of the tower body; a condensation pipe is fixedly installed on the back of the refrigeration box, a mixing device is arranged in the tower body, a collecting device is arranged in the tower body, and a waste gas treatment device is arranged on the left side of the tower body. The flow contact between the hexafluoroisopropyl methyl ether mixed gas and the surface of the condensation pipe is increased, so that the hexafluoroisopropyl methyl ether mixed gas is more uniformly distributed on the surface of the condensation pipe, the heat exchange efficiency between the hexafluoroisopropyl methyl ether mixed gas and the surface of the condensation pipe is improved, and the condensation process of hexafluoroisopropyl methyl ether is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of separation towers, in particular to a hexafluoroisopropyl methyl ether separation tower with good absorption effect and a preparation process thereof. Background Art

[0002] Hexafluoroisopropyl methyl ether separation tower is a device used to separate and purify hexafluoroisopropyl methyl ether. It usually has efficient absorption and separation capabilities, ensuring that hexafluoroisopropyl methyl ether can be separated from other substances in a relatively short time.

[0003] The patent with the patent announcement number CN206315640U relates to the technical field of separation towers, especially a methyl ether separation tower with good absorption effect, including a tower body, a submersible pump is also provided in the inner cavity of the sealed tube, the submersible pump is fixed on the uppermost horizontal spoiler, the output end of the submersible pump is connected to the upper end of the absorbent circulation cavity through a pipeline, a solenoid valve is also provided at the bottom of the side wall of the absorbent circulation cavity, the output end of the solenoid valve is connected to the bottom of the sealed tube through a pipeline, and a mounting plate is also provided on the tower body, a submersible pump power switch and a solenoid valve power switch are provided on the mounting plate, the submersible pump power switch is electrically connected to the submersible pump, and the solenoid valve power switch is electrically connected to the solenoid valve. The methyl ether separation tower with good absorption effect has a good separation effect on methyl ether, so that the absorbent can be fully utilized, and the resource utilization rate is high.

[0004] In the above patent, the separation effect of methyl ether is good, so that the absorbent can be fully utilized and the resource utilization rate is high. However, after the hexafluoroisopropyl methyl ether is absorbed by the absorbent, the hexafluoroisopropyl methyl ether needs to be separated from the absorbent, which makes the steps more complicated and increases the working time. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a hexafluoroisopropyl methyl ether separation tower with good absorption effect and a preparation process thereof, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hexafluoroisopropyl methyl ether separation tower with good absorption effect, comprising a tower body, a bevel plate fixedly installed on the inner wall of the tower body, a support foot fixedly installed on the bottom of the tower body, an air intake box fixedly installed on the front of the tower body, a refrigeration box fixedly installed on the front of the tower body, a condenser fixedly installed on the back of the refrigeration box, a mixing device arranged inside the tower body, a collecting device arranged inside the tower body, and an exhaust gas treatment device arranged on the left side of the tower body; Wherein, the mixing device includes a motor, a rotating shaft, a fan blade, a long rod, a baffle, a fixed plate and a push rod. The motor is fixedly installed on the top of the tower body, the rotating shaft is fixedly installed on the output end of the motor, the fan blade is fixedly installed on the circumferential surface of the rotating shaft, the long rod is fixedly installed on the end of the rotating shaft away from the output end of the motor, the baffle is slidably installed on the inner wall of the tower body, the fixed plate is fixedly installed on the top of the baffle, and the push rod is fixedly installed on the top of the fixed plate. When the rotating shaft rotates, the long rod is driven to rotate, and the rotation of the long rod pushes the push rod to move. The movement of the push rod drives the fixed plate to move, and the movement of the fixed plate drives the baffle to move. The movement of the baffle opens the air inlet between the air intake box and the tower body.

[0007] According to the above technical solution, the long rod is in contact with the push rod, and a spring is arranged between the fixed plate and the inner wall of the tower body. The contact ensures that the long rod can push the push rod to move when it moves, and the spring ensures that the fixed plate can achieve autonomous reset.

[0008] According to the above technical scheme, the collecting device includes a fixed rod, a bottom plate, an elastic telescopic rod 1, a scraper rod, a block and a fixed block, the fixed rod is fixedly mounted on the end of the rotating shaft away from the output end of the motor 1, the bottom plate is fixedly mounted on the end of the fixed rod away from the rotating shaft, the elastic telescopic rod 1 is fixedly mounted on the top of the bottom plate, the scraper rod is fixedly mounted on the movable end of the elastic telescopic rod 1, the block is fixedly mounted on the inner wall of the tower body, and the fixed block is fixedly mounted on the bottom of the scraper rod near the block, and when the rotating shaft rotates, the fixed rod is driven to rotate, and the rotation of the fixed rod drives the bottom plate to rotate, and the rotation of the bottom plate drives the elastic telescopic rod 1 to rotate, and the rotation of the elastic telescopic rod 1 drives the scraper rod to rotate.

[0009] According to the above technical solution, the collecting device also includes a rotating rod and a baffle. The rotating rod is fixedly installed at the bottom of the scraper rod, and the baffle is fixedly installed at the end of the rotating rod away from the bottom plate. When the scraper rod rotates and moves downward, it drives the rotating rod to start moving. The movement of the rotating rod drives the baffle to start moving. The baffle moves out of contact with the inclined plate to open the discharge port at the bottom of the inclined plate. When the scraper rod rotates and moves upward, the baffle moves upward again to close the discharge port.

[0010] According to the above technical solution, the scraper rod contacts the bottom of the condenser tube, the fixed block contacts the stopper, the baffle door contacts the inclined disk, and the side of the stopper block close to the fixed block is set as an arc surface. The contact ensures that the scraper rod can scrape the hexafluoroisopropyl methyl ether condensate condensed at the bottom of the condenser tube, the contact ensures that the stopper can make the fixed block move along its arc surface, the contact ensures that the baffle door can close the discharge port at the bottom of the inclined disk, and the setting of the arc surface ensures that the fixed block can gradually move downward.

[0011] According to the above technical scheme, the exhaust gas treatment device includes a second push rod, a sliding plate, a second elastic telescopic rod, a sloped block, a sloped rod and an exhaust box. The second push rod is rotatably installed at the bottom of the baffle door, the sliding plate is slidably installed on the inner wall of the tower body, the fixed end of the second elastic telescopic rod is fixedly installed at the bottom of the sloped plate, the movable end of the second elastic telescopic rod is fixedly installed on the top of the sliding plate, the sloped block is fixedly installed on the side of the sliding plate away from the inner wall of the tower body, the sloped rod is slidably installed at the bottom of the sloped plate, and the exhaust box is fixedly installed on the left side of the tower body. When the baffle door moves, it drives the second push rod to move. The movement of the second push rod drives the sloped rod to move. The movement of the sloped rod drives the sloped block to move. The movement of the sloped block drives the sliding plate to move. The sliding plate moves to open the air outlet between the exhaust box and the tower body.

[0012] According to the above technical solution, the exhaust gas treatment device also includes an absorption plate, a second motor, a rotating column and two fan blades. The absorption plate is slidably installed inside the exhaust box, the second motor is fixedly installed inside the exhaust box, the rotating column is fixedly installed on the output end of the second motor, and the second fan blade is fixedly installed on the circumferential surface of the rotating column. When the second push rod no longer pushes the inclined rod, the sliding plate begins to reset and close the air outlet under the action of the second elastic telescopic rod, and the air outlet is intermittently opened.

[0013] According to the above technical solution, the side of the push rod 2 and the inclined rod close to each other is set as an inclined surface, the side of the inclined block and the inclined rod close to each other is set as an inclined surface, and the absorption plate is filled with activated carbon and other substances. By setting the inclined surface, it is ensured that the push rod 2 can smoothly push the inclined rod when moving, and by setting the inclined surface, it is ensured that the inclined rod can smoothly push the inclined block when moving. By filling with activated carbon and other substances, it is ensured that the absorption plate can absorb harmful substances in the exhaust gas.

[0014] A process for preparing hexafluoroisopropyl methyl ether, using the above-mentioned hexafluoroisopropyl methyl ether separation tower with good absorption effect, is characterized in that it comprises the following steps: Step 1: Start the refrigeration box to allow the condenser to start transferring temperature to reduce the temperature inside the tower body to the minimum temperature at which hexafluoroisopropyl methyl ether is liquefied, and then start the air inlet box to introduce a mixed gas containing hexafluoroisopropyl methyl ether into the tower body; Step 2: Start the motor 1, so that the motor 1 drives the rotating shaft to start rotating, and the rotation of the rotating shaft drives the fan blades to start rotating. The rotation of the fan blades fans the mixed gas of hexafluoroisopropyl methyl ether in the tower body, increases the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser tube, makes it more evenly distributed on the surface of the condenser tube, improves the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser tube, and promotes the condensation process of hexafluoroisopropyl methyl ether; Step three: by driving the long rod to start rotating while the shaft rotates, the rotation of the long rod pushes the push rod to start moving, the push rod moves and drives the fixed plate to start moving, the fixed plate moves and drives the baffle to start moving, the baffle moves and opens the air inlet between the air inlet box and the tower body, after the long rod no longer pushes the push rod, the fixed plate drives the baffle to reset under the action of the spring to block the air inlet, and the air inlet is intermittently opened under the above reciprocating motion, which can prevent the hexafluoroisopropyl methyl ether mixed gas from entering the condensation system at too fast a speed, thereby helping to better control the condensation temperature and prevent excessive gas supply due to excessive gas.

[0015] The present invention provides a hexafluoroisopropyl methyl ether separation tower with good absorption effect and a preparation process thereof. It has the following beneficial effects: (1) The invention fans the mixed gas of hexafluoroisopropyl methyl ether in the tower body by rotating the fan blades, thereby increasing the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser tube, making it more evenly distributed on the surface of the condenser tube, improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser tube, and promoting the condensation process of hexafluoroisopropyl methyl ether. The fixed plate drives the baffle to start resetting under the action of the spring to block the air inlet. The air inlet is intermittently opened under the above reciprocating motion, which can prevent the mixed gas of hexafluoroisopropyl methyl ether from entering the condensation system at an excessively fast speed, thereby helping to better control the condensation temperature and prevent excessive accumulation and overflow of gas due to excessive gas supply.

[0016] (2) The invention ensures that the condensed hexafluoroisopropyl methyl ether will not accumulate on the condenser for a long time by rotating the scraper rod to contact the condenser and scrape off the hexafluoroisopropyl methyl ether liquid condensed on the bottom of the condenser, thereby effectively preventing the accumulation of condensed liquid, reducing the accumulation of liquid in the pipeline, and improving the condensation rate and efficiency. When the scraper rod rotates and moves upward, the baffle door moves upward to close the discharge port, and intermittent opening is used to prevent excessive accumulation of condensed liquid. At the same time, it ensures that the device can accumulate and maintain a sufficient amount of liquid within a certain period of time, thereby improving the condensation efficiency and preventing the discharge port from being continuously opened, resulting in the continuous discharge of liquid in the condensation device and the inability to maintain a sufficient amount of condensed liquid.

[0017] (3) The invention starts to blow air outwards by rotating the second fan blade. When the air outlet is opened, the exhaust gas inside the tower body is driven to circulate and pass through the inside of the absorption plate when inside the exhaust box. When the exhaust gas enters the inside of the absorption plate, it contacts with other substances such as activated carbon and adsorbs most of the harmful substances, ensuring that hexafluoroisopropyl methyl ether and other harmful substances in the exhaust gas are effectively removed, reducing air pollution and preventing direct exhaust gas discharge from causing long-term impact on the environment. By intermittently opening the air outlet, the exhaust gas emission can be effectively controlled to avoid excessive exhaust gas concentration or sudden exhaust gas release, ensuring that the exhaust gas emission meets environmental protection requirements and reduces pollution to the environment. By replacing a new absorption plate, it can be ensured that the absorption plate can always absorb the exhaust gas with high efficiency so that the harmful gas is fully absorbed or removed, preventing the surface of the absorption plate from being polluted, saturated or blocked, resulting in a decrease in its absorption efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the refrigeration box and condenser tube structure of the present invention; Figure 3 It is a schematic cross-sectional view of the structure of the mixing device of the present invention; Figure 4 It is a cross-sectional schematic diagram of the baffle and the fixing plate structure of the present invention; Figure 5 It is a schematic cross-sectional view of the structure of the collecting device of the present invention; Figure 6 It is a cross-sectional schematic diagram of the scraper rod and the rotating rod structure of the present invention; Figure 7 It is a schematic cross-sectional view of the structure of the exhaust gas treatment device of the present invention; Figure 8 It is a schematic cross-sectional view of the exhaust box and the absorption plate structure of the present invention.

[0019] In the figure: 1, tower body; 101, inclined plate; 2, supporting foot; 3, air intake box; 4, refrigeration box; 5, condenser; 6, motor 1; 7, rotating shaft; 8, fan blade 1; 9, long rod; 10, baffle; 11, fixed plate; 12, push rod 1; 131, fixed rod; 132, bottom plate; 133, elastic telescopic rod 1; 134, scraper rod; 135, block; 136, fixed block; 137, rotating rod; 138, door; 141, push rod 2; 142, sliding plate; 143, elastic telescopic rod 2; 144, inclined block; 145, inclined rod; 146, exhaust box; 147, absorption plate; 148, motor 2; 149, rotating column; 1410, fan blade 2. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 8 , one embodiment of the present invention is: a hexafluoroisopropyl methyl ether separation tower with good absorption effect, comprising a tower body 1, a bevel plate 101 is fixedly installed on the inner wall of the tower body 1, a support foot 2 is fixedly installed on the bottom of the tower body 1, an air intake box 3 is fixedly installed on the front of the tower body 1, a refrigeration box 4 is fixedly installed on the front of the tower body 1, a condenser 5 is fixedly installed on the back of the refrigeration box 4, and a mixing device is arranged inside the tower body 1; Wherein, the mixing device includes a motor 6, a rotating shaft 7, a fan blade 8, a long rod 9, a baffle 10, a fixed plate 11 and a push rod 12. The motor 6 is fixedly installed on the top of the tower body 1, the rotating shaft 7 is fixedly installed on the output end of the motor 6, the fan blade 8 is fixedly installed on the circumferential surface of the rotating shaft 7, the long rod 9 is fixedly installed on the end of the rotating shaft 7 away from the output end of the motor 6, the baffle 10 is slidably installed on the inner wall of the tower body 1, the fixed plate 11 is fixedly installed on the top of the baffle 10, and the push rod 12 is fixedly installed on the top of the fixed plate 11. The fan blade 8 rotates to fan the mixed gas of hexafluoroisopropyl methyl ether inside the tower body 1, increase the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser 5, make it more evenly distributed on the surface of the condenser 5, improve the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser 5, and promote the condensation process of hexafluoroisopropyl methyl ether.

[0022] The long rod 9 is in contact with the push rod 12, and a spring is arranged between the fixed plate 11 and the inner wall of the tower body 1, so as to ensure that the long rod 9 can push the push rod 12 to move when moving, and the spring is arranged to ensure that the fixed plate 11 can realize self-reset.

[0023] A process for preparing hexafluoroisopropyl methyl ether, using the above-mentioned hexafluoroisopropyl methyl ether separation tower with good absorption effect, comprises the following steps: Step 1: Start the refrigeration box 4 to allow the condenser 5 to start transferring temperature to reduce the temperature inside the tower body 1 to the minimum temperature at which hexafluoroisopropyl methyl ether is liquefied, and then start the air inlet box 3 to introduce a mixed gas containing hexafluoroisopropyl methyl ether into the tower body 1; Step 2: Start the motor 6 to drive the shaft 7 to start rotating, and the shaft 7 rotates to drive the fan blade 8 to start rotating. The fan blade 8 rotates to fan the mixed gas of hexafluoroisopropyl methyl ether inside the tower body 1, increasing the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser 5, making it more evenly distributed on the surface of the condenser 5, improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser 5, and promoting the condensation process of hexafluoroisopropyl methyl ether; Step three: by driving the long rod 9 to start rotating while the rotating shaft 7 rotates, the long rod 9 rotates to push the push rod 12 to start moving, the push rod 12 moves to drive the fixed plate 11 to start moving, the fixed plate 11 moves to drive the baffle 10 to start moving, the baffle 10 moves to open the air inlet between the air inlet box 3 and the tower body 1, after the long rod 9 no longer pushes the push rod 12, the fixed plate 11 drives the baffle 10 to start resetting under the action of the spring to block the air inlet, and the air inlet is intermittently opened under the above reciprocating motion, which can prevent the hexafluoroisopropyl methyl ether mixed gas from entering the condensation system at an excessively fast speed, thereby helping to better control the condensation temperature and prevent excessive gas accumulation and overflow caused by excessive gas supply.

[0024] When the present embodiment is working, firstly, the refrigeration box 4 is started to make the condenser 5 start to transfer temperature to reduce the temperature inside the tower body 1 to the lowest temperature for liquefaction of hexafluoroisopropyl methyl ether, then the air inlet box 3 is started to introduce the mixed gas containing hexafluoroisopropyl methyl ether into the tower body 1, and after the gas enters the tower body 1, the motor 6 is started to make the motor 6 drive the rotating shaft 7 to start rotating, and the rotating shaft 7 rotates to drive the fan blade 8 to start rotating, and the fan blade 8 rotates to fan the mixed gas of hexafluoroisopropyl methyl ether inside the tower body 1, thereby increasing the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser 5, making it more evenly distributed on the surface of the condenser 5, and improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser 5. Promote the condensation process of hexafluoroisopropyl methyl ether; when the rotating shaft 7 rotates, the long rod 9 is driven to start rotating, and the rotation of the long rod 9 pushes the push rod 12 to start moving, the movement of the push rod 12 drives the fixed plate 11 to start moving, the movement of the fixed plate 11 drives the baffle 10 to start moving, and the baffle 10 moves to open the air inlet between the air inlet box 3 and the tower body 1. After the long rod 9 no longer pushes the push rod 12, the fixed plate 11 drives the baffle 10 to start resetting under the action of the spring to block the air inlet. The air inlet is intermittently opened under the above reciprocating motion, which can prevent the hexafluoroisopropyl methyl ether mixed gas from entering the condensation system at an excessively fast speed, thereby helping to better control the condensation temperature and prevent excessive accumulation and overflow of gas due to excessive gas supply.

[0025] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, a collecting device is arranged inside the tower body 1, and an exhaust gas treatment device is arranged on the left side of the tower body 1. The collecting device comprises a fixing rod 131, a bottom plate 132, an elastic telescopic rod 133, a scraper rod 134, a stopper 135 and a fixing block 136. The fixing rod 131 is fixedly mounted on the end of the rotating shaft 7 away from the output end of the motor 6, the bottom plate 132 is fixedly mounted on the end of the fixing rod 131 away from the rotating shaft 7, the elastic telescopic rod 133 is fixedly mounted on the top of the bottom plate 132, and the scraper rod 134 is fixedly mounted on the elastic telescopic rod 133. The movable end of the retracted rod 133 and the stopper 135 are fixedly installed on the inner wall of the tower body 1, and the fixed block 136 is fixedly installed on the bottom of the scraper rod 134 near the stopper 135. The scraper rod 134 rotates to contact the condenser tube 5 and scrapes off the hexafluoroisopropyl methyl ether liquid condensed on the bottom of the condenser tube 5, ensuring that the condensate of hexafluoroisopropyl methyl ether will not accumulate on the condenser tube 5 for a long time, effectively preventing the accumulation of condensate, reducing the accumulation of liquid in the pipeline, and improving the condensation rate and condensation efficiency. When the scraper rod 134 rotates and moves upward, the baffle door 138 moves upward again to close the discharge port.

[0026] The collecting device also includes a rotating rod 137 and a baffle 138. The rotating rod 137 is fixedly installed at the bottom of the scraper rod 134, and the baffle 138 is fixedly installed at the end of the rotating rod 137 away from the bottom plate 132. Intermittent opening can prevent excessive accumulation of condensate, while ensuring that the device can accumulate and maintain a sufficient amount of liquid within a certain period of time, thereby improving the condensation efficiency and preventing the discharge port from being continuously opened, resulting in continuous discharge of liquid in the condensation device and inability to maintain a sufficient amount of condensate.

[0027] The scraper rod 134 contacts the bottom of the condenser tube 5, the fixed block 136 contacts the stopper 135, the baffle 138 contacts the inclined disk 101, and the side of the stopper 135 close to the fixed block 136 is set as an arc surface. The contact ensures that the scraper rod 134 can scrape the hexafluoroisopropyl methyl ether condensate condensed at the bottom of the condenser tube 5, the contact ensures that the stopper 135 can make the fixed block 136 move along its arc surface, the contact ensures that the baffle 138 can close the discharge port at the bottom of the inclined disk 101, and the setting of the arc surface ensures that the fixed block 136 can gradually move downward.

[0028] The exhaust gas treatment device includes a push rod 141, a sliding plate 142, an elastic telescopic rod 143, a slope block 144, a slope rod 145 and an exhaust box 146. The push rod 141 is rotatably mounted on the bottom of the door 138, the sliding plate 142 is slidably mounted on the inner wall of the tower body 1, the fixed end of the elastic telescopic rod 143 is fixedly mounted on the bottom of the slope plate 101, the movable end of the elastic telescopic rod 143 is fixedly mounted on the top of the sliding plate 142, the slope block 144 is fixedly mounted on the side of the sliding plate 142 away from the inner wall of the tower body 1, and the slope rod 145 is slidably mounted on the inner wall of the tower body 1. Installed at the bottom of the inclined plate 101, the exhaust box 146 is fixedly installed on the left side of the tower body 1. The fan blade 1410 rotates to start blowing outwards. When the air outlet is opened, the exhaust gas inside the tower body 1 is driven to circulate and pass through the absorption plate 147 when inside the exhaust box 146. When the exhaust gas enters the absorption plate 147, it contacts with other substances such as activated carbon and adsorbs most of the harmful substances, ensuring the effective removal of hexafluoroisopropyl methyl ether and other harmful substances in the exhaust gas, reducing air pollution, and preventing the direct discharge of exhaust gas from causing long-term impact on the environment.

[0029] The exhaust gas treatment device also includes an absorption plate 147, a second motor 148, a rotating column 149 and a second fan blade 1410. The absorption plate 147 is slidably installed inside the exhaust box 146, the second motor 148 is fixedly installed inside the exhaust box 146, the rotating column 149 is fixedly installed at the output end of the second motor 148, and the second fan blade 1410 is fixedly installed on the circumferential surface of the rotating column 149. By intermittently opening the air outlet, the emission of exhaust gas can be effectively controlled to avoid excessive exhaust gas concentration or sudden exhaust gas release, thereby ensuring that the exhaust gas emission meets environmental protection requirements and reduces pollution to the environment.

[0030] The side where the push rod 141 and the inclined rod 145 are close to each other is set as an inclined surface, the side where the inclined surface block 144 and the inclined surface rod 145 are close to each other is set as an inclined surface, and the absorption plate 147 is filled with activated carbon and other substances. By setting the inclined surface, it is ensured that the push rod 141 can smoothly push the inclined surface rod 145 when moving, and by setting the inclined surface, it is ensured that the inclined surface rod 145 can smoothly push the inclined surface block 144 when moving. By filling with activated carbon and other substances, it is ensured that the absorption plate 147 can absorb harmful substances in the exhaust gas.

[0031] When the present embodiment is working, the rotating shaft 7 drives the fixing rod 131 to start rotating, the fixing rod 131 drives the bottom plate 132 to start rotating, the bottom plate 132 drives the elastic telescopic rod 133 to start rotating, the elastic telescopic rod 133 drives the scraper rod 134 to start rotating, the scraper rod 134 rotates to contact the condenser tube 5 and scrapes off the hexafluoroisopropyl methyl ether liquid condensed on the bottom of the condenser tube 5, ensuring that the condensed hexafluoroisopropyl methyl ether will not accumulate on the condenser tube 5 for a long time, effectively preventing the accumulation of condensed liquid, reducing the accumulation of liquid in the pipeline, and improving the condensation rate and condensation efficiency, and the scraper rod 134 drives the fixing block 136 to start rotating when the scraper rod 134 rotates, the fixing block 136 rotates to contact the stopper 135, and under the action of the arc surface of the stopper 135, the scraper rod 134 moves downward while rotating to break away from the contact with the condenser tube 5, and after rotating half a circle, the fixing block 136 breaks away from the stopper 13 5, then the scraper rod 134 moves upward under the action of the elastic telescopic rod 133 and contacts the condenser 5 again, ensuring that the scraper rod 134 will not be in contact with the condenser 5 all the time, so that the hexafluoroisopropyl methyl ether gas can fully contact with the condenser 5 for condensation, thereby improving the condensation efficiency; while the scraper rod 134 rotates and moves downward, it drives the rotating rod 137 to start moving, and the movement of the rotating rod 137 drives the baffle door 138 to start moving, and the baffle door 138 moves out of contact with the inclined plate 101 to open the discharge port at the bottom of the inclined plate 101, and when the scraper rod 134 rotates and moves upward, the baffle door 138 moves upward again to close the discharge port, and intermittent opening is used to avoid excessive accumulation of condensate, while ensuring that the device can accumulate and maintain a sufficient amount of liquid within a certain period of time, thereby improving the condensation efficiency and preventing the discharge port from being continuously opened, resulting in the continuous discharge of liquid in the condensation device, and being unable to maintain a sufficient amount of condensate.

[0032] When the baffle 138 moves, the push rod 141 starts to move, the push rod 141 moves to push the inclined rod 145 to start moving, the inclined rod 145 moves to push the inclined block 144 to start moving, the inclined block 144 moves to drive the sliding plate 142 to start moving, the sliding plate 142 moves to open the air outlet between the exhaust box 146 and the tower body 1, and the rotating column 149 starts to rotate under the drive of the motor 148, the rotating column 149 rotates to drive the fan blade 1410 to start rotating, and the fan blade 1410 rotates to start blowing outwards. When the air outlet is opened, the exhaust gas inside the tower body 1 is driven to circulate and pass through the absorption plate 147 inside the exhaust box 146. When the exhaust gas enters the absorption plate 147, it contacts other substances such as activated carbon and adsorbs most of the harmful substances, ensuring that hexafluoroisopropylamine in the exhaust gas is effectively removed. methyl ether and other harmful substances, reduce air pollution, prevent direct emission of waste gas and cause long-term impact on the environment, when the push rod 141 no longer pushes the inclined rod 145, the sliding plate 142 begins to reset and close the air outlet under the action of the elastic telescopic rod 143, and the air outlet is opened intermittently, so as to effectively control the emission of waste gas, avoid excessive concentration of waste gas or sudden release of waste gas, ensure that the waste gas emission meets environmental protection requirements and reduce pollution to the environment; when the air outlet is closed, the handle on the front of the absorption plate 147 can be pulled to pull out the lower absorption plate 147 to replace it with a new absorption plate 147, so as to ensure that the absorption plate 147 can always absorb the waste gas efficiently so that the harmful gas can be fully absorbed or removed, and prevent the surface of the absorption plate 147 from being polluted, saturated or blocked, resulting in a decrease in its absorption efficiency.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hexafluoroisopropyl methyl ether separation tower with good absorption effect, comprising a tower body (1), characterized in that: The inner wall of the tower body (1) is fixedly mounted with a bevel plate (101), the bottom of the tower body (1) is fixedly mounted with a support foot (2), the front of the tower body (1) is fixedly mounted with an air intake box (3), the front of the tower body (1) is fixedly mounted with a refrigeration box (4), the back of the refrigeration box (4) is fixedly mounted with a condenser pipe (5), a mixing device is arranged inside the tower body (1), a collecting device is arranged inside the tower body (1), and an exhaust gas treatment device is arranged on the left side of the tower body (1); The mixing device comprises a motor (6), a rotating shaft (7), a fan blade (8), a long rod (9), a baffle (10), a fixed plate (11) and a push rod (12); the motor (6) is fixedly mounted on the top of the tower body (1); the rotating shaft (7) is fixedly mounted on the output end of the motor (6); the fan blade (8) is fixedly mounted on the circumferential surface of the rotating shaft (7); the long rod (9) is fixedly mounted on an end of the rotating shaft (7) away from the output end of the motor (6); the baffle (10) is slidably mounted on the inner wall of the tower body (1); the fixed plate (11) is fixedly mounted on the top of the baffle (10); and the push rod (12) is fixedly mounted on the top of the fixed plate (11).

2. A hexafluoroisopropyl methyl ether separation tower with good absorption effect according to claim 1, characterized in that: The long rod (9) is in contact with a push rod (12), and a spring is provided between the fixing plate (11) and the inner wall of the tower body (1).

3. A hexafluoroisopropyl methyl ether separation tower with good absorption effect according to claim 2, characterized in that: The collecting device comprises a fixed rod (131), a bottom plate (132), an elastic telescopic rod (133), a scraper rod (134), a stopper (135) and a fixed block (136); the fixed rod (131) is fixedly mounted on an end of the rotating shaft (7) away from an output end of the motor (6); the bottom plate (132) is fixedly mounted on an end of the fixed rod (131) away from the rotating shaft (7); the elastic telescopic rod (133) is fixedly mounted on the top of the bottom plate (132); the scraper rod (134) is fixedly mounted on the movable end of the elastic telescopic rod (133); the stopper (135) is fixedly mounted on the inner wall of the tower body (1); and the fixed block (136) is fixedly mounted on the bottom of the scraper rod (134) close to the stopper (135).

4. A hexafluoroisopropyl methyl ether separation tower with good absorption effect according to claim 3, characterized in that: The collecting device further comprises a rotating rod (137) and a blocking door (138), wherein the rotating rod (137) is fixedly mounted on the bottom of the scraping rod (134), and the blocking door (138) is fixedly mounted on an end of the rotating rod (137) away from the bottom plate (132).

5. A hexafluoroisopropyl methyl ether separation tower with good absorption effect according to claim 4, characterized in that: The scraper rod (134) contacts the bottom of the condenser tube (5), the fixed block (136) contacts the stop block (135), the stop door (138) contacts the inclined plate (101), and the side of the stop block (135) close to the fixed block (136) is set as an arc surface.

6. A hexafluoroisopropyl methyl ether separation tower with good absorption effect according to claim 5, characterized in that: The exhaust gas treatment device comprises a second push rod (141), a sliding plate (142), a second elastic telescopic rod (143), a slope block (144), a slope rod (145) and an exhaust box (146), wherein the second push rod (141) is rotatably mounted on the bottom of the baffle door (138), the sliding plate (142) is slidably mounted on the inner wall of the tower body (1), the fixed end of the second elastic telescopic rod (143) is fixedly mounted on the bottom of the slope plate (101), the movable end of the second elastic telescopic rod (143) is fixedly mounted on the top of the sliding plate (142), the slope block (144) is fixedly mounted on a side of the sliding plate (142) away from the inner wall of the tower body (1), the slope rod (145) is slidably mounted on the bottom of the slope plate (101), and the exhaust box (146) is fixedly mounted on the left side of the tower body (1).

7. A hexafluoroisopropyl methyl ether separation tower with good absorption effect according to claim 6, characterized in that: The exhaust gas treatment device also includes an absorption plate (147), a second motor (148), a rotating column (149) and a second fan blade (1410), wherein the absorption plate (147) is slidably mounted inside the exhaust box (146), the second motor (148) is fixedly mounted inside the exhaust box (146), the rotating column (149) is fixedly mounted on the output end of the second motor (148), and the second fan blade (1410) is fixedly mounted on the circumferential surface of the rotating column (149).

8. A hexafluoroisopropyl methyl ether separation tower with good absorption effect according to claim 7, characterized in that: The side of the push rod 2 (141) and the inclined rod (145) that are close to each other is set as an inclined surface, the side of the inclined surface block (144) and the inclined rod (145) that are in contact with each other is set as an inclined surface, and the absorption plate (147) is filled with activated carbon.

9. A process for preparing hexafluoroisopropyl methyl ether, using a hexafluoroisopropyl methyl ether separation tower with good absorption effect as claimed in claim 8, characterized in that: The following steps are involved: Step 1: starting the refrigeration box (4) so ​​that the condenser (5) starts to transfer temperature and the temperature inside the tower body (1) is reduced to the minimum temperature at which hexafluoroisopropyl methyl ether is liquefied, and then starting the air inlet box (3) to introduce a mixed gas containing hexafluoroisopropyl methyl ether into the tower body (1); Step 2: starting the motor 1 (6) so that the motor 1 (6) drives the rotating shaft (7) to start rotating, and the rotating shaft (7) drives the fan blade 1 (8) to start rotating, and the fan blade 1 (8) rotates to fan the mixed gas of hexafluoroisopropyl methyl ether inside the tower body (1), thereby increasing the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser (5), making it more evenly distributed on the surface of the condenser (5), improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser (5), and promoting the condensation process of the hexafluoroisopropyl methyl ether; Step 3: The long rod (9) is driven to rotate while the rotating shaft (7) rotates. The long rod (9) rotates to push the push rod 1 (12) to start moving. The push rod 1 (12) moves to drive the fixed plate (11) to start moving. The fixed plate (11) moves to drive the baffle (10) to start moving. The baffle (10) moves to open the air inlet between the air inlet box (3) and the tower body (1). After the long rod (9) no longer pushes the push rod 1 (12), the fixed plate (11) drives the baffle (10) to start resetting under the action of the spring to block the air inlet. The air inlet is intermittently opened under the above reciprocating motion, so as to prevent the hexafluoroisopropyl methyl ether mixed gas from entering the condensation system at an excessively fast speed, thereby helping to better control the condensation temperature and prevent excessive gas supply resulting in excessive gas.

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