A hexafluoroisopropyl methyl ether separation column with good absorption effect and its preparation process

Abstract

The present invention discloses a hexafluoroisopropyl methyl ether separation tower with good absorption effect and its preparation process, which relates to the technical field of separation towers. It includes a tower body. An inclined disk is fixedly installed on the inner wall of the tower body. Support feet are fixedly installed at the bottom of the tower body. An air inlet box is fixedly installed at the front of the tower body. A refrigeration box is fixedly installed at the front of the tower body. A condensing pipe is fixedly installed on the back of the refrigeration box. A mixing device is arranged inside the tower body, and a collection device is arranged inside the tower body. An exhaust gas treatment device is arranged on the left side of the tower body. By rotating the first fan blade, the mixed gas of hexafluoroisopropyl methyl ether inside the tower body is fanned, increasing the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condensing pipe, making it more evenly distributed on the surface of the condensing pipe, improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condensing pipe, and promoting the condensation process of hexafluoroisopropyl methyl ether.

Description

Technical Field

[0001] The present invention relates to the technical field of separation towers, and particularly to a hexafluoroisopropyl methyl ether separation tower with good absorption effect and its preparation process. Background Technique

[0002] The hexafluoroisopropyl methyl ether separation tower is a device used for separating and purifying hexafluoroisopropyl methyl ether, and usually has efficient absorption and separation capabilities to ensure that hexafluoroisopropyl methyl ether can be separated from other substances in a 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 pipe, and the submersible pump is fixed on the uppermost horizontal baffle. The output end of the submersible pump is connected to the upper end of the absorbent circulation cavity through a pipeline. An electromagnetic valve is also provided at the bottom of the side wall of the absorbent circulation cavity, and the output end of the electromagnetic valve is connected to the bottom of the sealed pipe through a pipeline. An installation plate is also provided on the tower body, and a submersible pump power switch and an electromagnetic valve power switch are provided on the installation plate. The submersible pump power switch is electrically connected to the submersible pump, and the electromagnetic valve power switch is electrically connected to the electromagnetic valve. This methyl ether separation tower with good absorption effect has a good separation effect on methyl ether, enabling the absorbent to be fully utilized and having a high resource utilization rate.

[0004] In the above patent, the separation effect on methyl ether is good, enabling the absorbent to be fully utilized and having a high resource utilization rate. However, after using the absorbent to absorb hexafluoroisopropyl methyl ether, it is necessary to separate hexafluoroisopropyl methyl ether from the absorbent, which makes the steps rather cumbersome and increases the working hours. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a hexafluoroisopropyl methyl ether separation tower with good absorption effect and its preparation process, solving the problems raised in the above background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A hexafluoroisopropyl methyl ether separation tower with good absorption effect, including a tower body, an inclined plane disk is fixedly installed on the inner wall of the tower body, support feet are fixedly installed at the bottom of the tower body, an air inlet box is fixedly installed at the front of the tower body, a refrigeration box is fixedly installed at the front of the tower body, a condensation pipe is fixedly installed on the back of the refrigeration box, a mixing device is arranged inside the tower body, a collection device is arranged inside the tower body, and an exhaust gas treatment device is arranged on the left side of the tower body;

[0007] Among them, the mixing device includes a first motor, a rotating shaft, a first fan blade, a long rod, a baffle, a fixing plate, and a first push rod. The first motor is fixedly installed at the top of the tower body. The rotating shaft is fixedly installed at the output end of the first motor. The first fan blade is fixedly installed on the circumferential surface of the rotating shaft. The long rod is fixedly installed at one end of the rotating shaft away from the output end of the first motor. The baffle is slidably installed on the inner wall of the tower body. The fixing plate is fixedly installed on the top of the baffle. The first push rod is fixedly installed on the top of the fixing plate. When the rotating shaft rotates, it drives the long rod to start rotating. The rotation of the long rod pushes the first push rod to start moving. The movement of the first push rod drives the fixing plate to start moving. The movement of the fixing plate drives the baffle to start moving. The movement of the baffle opens the air inlet between the air inlet box and the tower body.

[0008] According to the above technical solution, the long rod contacts the first push rod, and a spring is provided between the fixing plate and the inner wall of the tower body. By the contact, it is ensured that the long rod can push the first push rod to move when it moves. By setting the spring, it is ensured that the fixing plate can achieve self-resetting.

[0009] According to the above technical solution, the collection device includes a fixed rod, a bottom plate, a first elastic telescopic rod, a scraping rod, a stop block, and a fixing block. The fixed rod is fixedly installed at one end of the rotating shaft away from the output end of the first motor. The bottom plate is fixedly installed at one end of the fixed rod away from the rotating shaft. The first elastic telescopic rod is fixedly installed on the top of the bottom plate. The scraping rod is fixedly installed at the movable end of the first elastic telescopic rod. The stop block is fixedly installed on the inner wall of the tower body. The fixing block is fixedly installed at the bottom of the scraping rod close to the stop block. When the rotating shaft rotates, it drives the fixed rod to start rotating. The rotation of the fixed rod drives the bottom plate to start rotating. The rotation of the bottom plate drives the first elastic telescopic rod to start rotating. The rotation of the first elastic telescopic rod drives the scraping rod to start rotating.

[0010] According to the above technical solution, the collection device further includes a rotating rod and a blocking door. The rotating rod is fixedly installed at the bottom of the scraping rod. The blocking door is fixedly installed at one end of the rotating rod away from the bottom plate. When the scraping rod rotates and moves downward, it drives the rotating rod to start moving. The movement of the rotating rod drives the blocking door to start moving. The movement of the blocking door disengages from the contact with the inclined surface disk to open the discharge port at the bottom of the inclined surface disk. When the scraping rod rotates and moves upward, the blocking door moves upward again to close the discharge port.

[0011] According to the above technical solution, the scraping rod contacts the bottom of the condensing pipe, the fixing block contacts the stop block, the blocking door contacts the inclined surface disk, and the surface of the stop block close to the fixing block is set as an arc surface. By the contact, it is ensured that the scraping rod can scrape the hexafluoroisopropyl methyl ether condensate condensed at the bottom of the condensing pipe. By the contact, it is ensured that the stop block can make the fixing block move along its arc surface. By the contact, it is ensured that the blocking door can close the discharge port at the bottom of the inclined surface disk. By setting the arc surface, it is ensured that the fixing block can gradually move downward.

[0012] According to the above technical solution, the waste gas treatment device includes a second push rod, a sliding plate, a second elastic telescopic rod, an inclined plane block, an inclined plane rod, and an air extraction 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 inclined plane disk. The movable end of the second elastic telescopic rod is fixedly installed at the top of the sliding plate. The inclined plane block is fixedly installed on the side of the sliding plate away from the inner wall of the tower body. The inclined plane rod is slidably installed at the bottom of the inclined plane disk. The air extraction box is fixedly installed on the left side of the tower body. When the baffle door moves, it drives the second push rod to start moving. The movement of the second push rod pushes the inclined plane rod to start moving. The movement of the inclined plane rod pushes the inclined plane block to start moving. The movement of the inclined plane block drives the sliding plate to start moving. The movement of the sliding plate opens the air outlet between the air extraction box and the tower body.

[0013] According to the above technical solution, the waste gas treatment device further includes an absorption plate, a second motor, a rotating column, and a second fan blade. The absorption plate is slidably installed inside the air extraction box. The second motor is fixedly installed inside the air extraction box. The rotating column is fixedly installed at the output end of the second motor. 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 plane rod, the sliding plate starts to reset under the action of the second elastic telescopic rod to close the air outlet, and the air outlet is intermittently opened.

[0014] According to the above technical solution, the surfaces of the second push rod and the inclined plane rod that are close to each other are provided as inclined planes. The surfaces of the inclined plane block and the inclined plane rod that are close to each other are provided as inclined planes. The absorption plate is filled with activated carbon and other substances. By setting the inclined planes, it is ensured that the second push rod can smoothly push the inclined plane rod when moving. By setting the inclined planes, it is ensured that the inclined plane rod can smoothly push the inclined plane block when moving. By filling with activated carbon and other substances, it is ensured that the absorption plate can absorb harmful substances in the waste gas.

[0015] A preparation process of hexafluoroisopropyl methyl ether uses the above-mentioned hexafluoroisopropyl methyl ether separation tower with good absorption effect, and is characterized by including the following steps:

[0016] Step 1: Start the refrigeration box to make the condensing pipe start to transfer temperature and reduce the temperature inside the tower body to the lowest temperature at which hexafluoroisopropyl methyl ether liquefies. Subsequently, start the air inlet box to introduce a mixed gas containing hexafluoroisopropyl methyl ether into the tower body.

[0017] Step 2: Start the first motor, so that the first motor drives the rotating shaft to start rotating. The rotation of the rotating shaft drives the first fan blade to start rotating. The first fan blade rotates to fan the mixed gas of hexafluoroisopropyl methyl ether inside the tower body, increasing the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condensing pipe, making it more evenly distributed on the surface of the condensing pipe, improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condensing pipe, and promoting the condensation process of hexafluoroisopropyl methyl ether.

[0018] Step 3: While the rotating shaft rotates, it drives the long rod to start rotating. The rotation of the long rod pushes the first push rod to start moving. The movement of the first push rod drives the fixed plate to start moving. The movement of the fixed plate drives the baffle to start moving. The movement of the baffle opens the air inlet between the air inlet box and the tower body. After the long rod no longer pushes the first push rod, the fixed plate drives the baffle to start resetting under the action of the spring to block the air inlet. Under the above reciprocation, the air inlet is intermittently opened, 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 preventing excessive gas supply from causing gas overdose.

[0019] The present invention provides a hexafluoroisopropyl methyl ether separation tower with good absorption effect and its preparation process. It has the following beneficial effects:

[0020] (1) In this invention, the fan blade rotates to fan the mixed gas of hexafluoroisopropyl methyl ether inside the tower body, increasing the flow contact between the hexafluoroisopropyl methyl ether mixed gas and the surface of the condensation pipe, making it more evenly distributed on the surface of the condensation pipe, improving the heat exchange efficiency between the hexafluoroisopropyl methyl ether mixed gas and the surface of the condensation pipe, and promoting the condensation process of hexafluoroisopropyl methyl ether. After the fixed plate drives the baffle to start resetting under the action of the spring to block the air inlet, and under the above reciprocation, the air inlet is intermittently opened, 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 preventing excessive gas supply from causing excessive gas accumulation and overflow.

[0021] (2) In this invention, the scraping rod rotates to contact the condensation pipe and scrape off the hexafluoroisopropyl methyl ether liquid condensed at the bottom of the condensation pipe, ensuring that the condensate of hexafluoroisopropyl methyl ether will not accumulate on the condensation pipe for a long time, effectively preventing condensate accumulation, reducing the liquid accumulation in the pipeline, and improving the condensation rate and condensation efficiency. When the scraping rod rotates and moves upward, the blocking door also moves upward to close the discharge port. By intermittently opening, it avoids excessive condensate accumulation, and at the same time ensures that the device can accumulate and maintain a sufficient liquid volume within a certain period of time, thereby improving the condensation efficiency and preventing the continuous discharge of liquid in the condensation device due to the continuous opening of the discharge port, making it impossible to maintain a sufficient amount of condensate.

[0022] (3) In this invention, when the second fan blade starts to rotate and blow air outwards, it drives the circulation of the waste gas inside the tower body when the air outlet is opened. When the waste gas is inside the air extraction box, it passes through the inside of the absorption plate. When the waste gas enters the absorption plate, it comes into contact 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 waste gas, reducing air pollution, and preventing the direct emission of waste gas from causing long-term impacts on the environment. By intermittently opening the air outlet, the emission volume of the waste gas can be effectively controlled, avoiding excessive waste gas concentration or sudden waste gas release, ensuring that the waste gas emission meets environmental protection requirements, and reducing environmental pollution. By replacing the brand-new absorption plate, it is ensured that the absorption plate can always efficiently absorb the waste gas, enabling harmful gases to be fully absorbed or removed, and preventing the surface of the absorption plate from being contaminated, saturated, or blocked, resulting in a decline in its absorption efficiency. Description of the Drawings

[0023] Figure 1 Schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic cross-sectional view of the refrigeration box and the condensing pipe structure of the present invention;

[0025] Figure 3 Schematic cross-sectional view of the mixing device structure of the present invention;

[0026] Figure 4 Schematic cross-sectional view of the baffle and fixing plate structure of the present invention;

[0027] Figure 5 Schematic cross-sectional view of the collection device structure of the present invention;

[0028] Figure 6 Schematic cross-sectional view of the scraping rod and rotating rod structure of the present invention;

[0029] Figure 7 Schematic cross-sectional view of the waste gas treatment device structure of the present invention;

[0030] Figure 8 Schematic cross-sectional view of the air extraction box and absorption plate structure of the present invention.

[0031] In the figure: 1. Tower body; 101. Inclined surface plate; 2. Support feet; 3. Intake box; 4. Refrigeration box; 5. Condensing pipe; 6. Motor I; 7. Rotating shaft; 8. First fan blade; 9. Long rod; 10. Baffle; 11. Fixing plate; 12. First push rod; 131. Fixed rod; 132. Bottom plate; 133. First elastic telescopic rod; 134. Scraping rod; 135. Stopper; 136. Fixed block; 137. Rotating rod; 138. Stop door; 141. Second push rod; 142. Sliding plate; 143. Second elastic telescopic rod; 144. Inclined surface block; 145. Inclined surface rod; 146. Air extraction box; 147. Absorption plate; 148. Motor II; 149. Rotating column; 1410. Second fan blade. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-8 , an embodiment of the present invention is: a hexafluoroisopropyl methyl ether separation tower with good absorption effect, including a tower body 1, an inclined disk 101 is fixedly installed on the inner wall of the tower body 1, a support foot 2 is fixedly installed at the bottom of the tower body 1, an air inlet box 3 is fixedly installed at the front of the tower body 1, a refrigeration box 4 is fixedly installed at the front of the tower body 1, a condensation pipe 5 is fixedly installed on the back of the refrigeration box 4, and a mixing device is arranged inside the tower body 1;

[0034] Among them, the mixing device includes a motor 6, a rotating shaft 7, a fan blade 8, a long rod 9, a baffle 10, a fixing 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 at 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 at 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 fixing 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 fixing plate 11. By rotating the fan blade 8 to fan the mixed gas of hexafluoroisopropyl methyl ether inside the tower body 1, the flow contact between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condensation pipe 5 is increased, so that it is more evenly distributed on the surface of the condensation pipe 5, improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condensation pipe 5, and promoting the condensation process of hexafluoroisopropyl methyl ether.

[0035] The long rod 9 is in contact with the push rod 12, and a spring is arranged between the fixing plate 11 and the inner wall of the tower body 1. By ensuring the contact, the long rod 9 can push the push rod 12 to move when moving, and by setting the spring, the fixing plate 11 can achieve self-resetting.

[0036] A hexafluoroisopropyl methyl ether preparation process, using the above-mentioned hexafluoroisopropyl methyl ether separation tower with good absorption effect, includes the following steps:

[0037] Step 1: Start the refrigeration box 4 to make the condensation pipe 5 start to transfer temperature to reduce the temperature inside the tower body 1 to the lowest temperature at which hexafluoroisopropyl methyl ether liquefies, and then start the air inlet box 3 to introduce the mixed gas containing hexafluoroisopropyl methyl ether into the tower body 1;

[0038] Step 2: Start motor 1 6, so that motor 1 6 drives the rotation of the rotating shaft 7. The rotation of the rotating shaft 7 drives the rotation of the first fan blade 8. The rotation of the first fan blade 8 fans 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 tube 5, making it more evenly distributed on the surface of the condenser tube 5, improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser tube 5, and promoting the condensation process of hexafluoroisopropyl methyl ether;

[0039] Step 3: While the rotating shaft 7 is rotating, drive the long rod 9 to start rotating. The rotation of the long rod 9 pushes the first push rod 12 to start moving. The movement of the first push rod 12 drives the fixing plate 11 to start moving. The movement of the fixing plate 11 drives the baffle 10 to start moving. The movement of the baffle 10 opens the air inlet between the air inlet box 3 and the tower body 1. After the long rod 9 no longer pushes the first push rod 12, the fixing plate 11 drives the baffle 10 to start resetting under the action of the spring to block the air inlet. Under the above reciprocation, the air inlet is intermittently opened, which can prevent the mixed gas of hexafluoroisopropyl methyl ether from entering the condensation system too fast, thereby helping to better control the condensation temperature and prevent excessive gas accumulation and overflow caused by too fast gas supply.

[0040] When this embodiment works: First, start the refrigeration box 4 to make the condenser tube 5 start to transfer temperature and reduce the temperature inside the tower body 1 to the lowest temperature at which hexafluoroisopropyl methyl ether liquefies. Then start the air inlet box 3 to introduce the mixed gas containing hexafluoroisopropyl methyl ether into the tower body 1. After the gas enters the tower body 1, start motor 1 6, so that motor 1 6 drives the rotation of the rotating shaft 7. The rotation of the rotating shaft 7 drives the rotation of the first fan blade 8. The rotation of the first fan blade 8 fans 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 tube 5, making it more evenly distributed on the surface of the condenser tube 5, improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condenser tube 5, and promoting the condensation process of hexafluoroisopropyl methyl ether; While the rotating shaft 7 is rotating, drive the long rod 9 to start rotating. The rotation of the long rod 9 pushes the first push rod 12 to start moving. The movement of the first push rod 12 drives the fixing plate 11 to start moving. The movement of the fixing plate 11 drives the baffle 10 to start moving. The movement of the baffle 10 opens the air inlet between the air inlet box 3 and the tower body 1. After the long rod 9 no longer pushes the first push rod 12, the fixing plate 11 drives the baffle 10 to start resetting under the action of the spring to block the air inlet. Under the above reciprocation, the air inlet is intermittently opened, which can prevent the mixed gas of hexafluoroisopropyl methyl ether from entering the condensation system too fast, thereby helping to better control the condensation temperature and prevent excessive gas accumulation and overflow caused by too fast gas supply.

[0041] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, a collection device is provided inside the tower body 1, and an exhaust gas treatment device is provided on the left side of the tower body 1. The collection device includes a fixed rod 131, a bottom plate 132, a first elastic telescopic rod 133, a scraping rod 134, a stopper 135 and a fixed block 136. The fixed rod 131 is fixedly installed at one end of the rotating shaft 7 away from the output end of the first motor 6, and the bottom plate 132 is fixedly installed at one end of the fixed rod 131 away from the rotating shaft 7. The first elastic telescopic rod 133 is fixedly installed on the top of the bottom plate 132, and the scraping rod 134 is fixedly installed at the movable end of the first elastic telescopic rod 133. The stopper 135 is fixedly installed on the inner wall of the tower body 1, and the fixed block 136 is fixedly installed at the bottom of the scraping rod 134 close to the stopper 135. The scraping rod 134 rotates to contact the condenser tube 5 and scrape off the hexafluoroisopropyl methyl ether liquid condensed at the bottom of the condenser tube 5, ensuring that the condensate of hexafluoroisopropyl methyl ether does not accumulate on the condenser tube 5 for a long time, effectively preventing the accumulation of condensate, reducing the liquid accumulation in the pipeline, and improving the condensation rate and efficiency. When the scraping rod 134 rotates and moves upward, the shutter 138 also moves upward to close the discharge port.

[0042] The collection device further includes a rotating rod 137 and a shutter 138. The rotating rod 137 is fixedly installed at the bottom of the scraping rod 134, and the shutter 138 is fixedly installed at one end of the rotating rod 137 away from the bottom plate 132. By intermittently opening, it avoids excessive accumulation of condensate volume, and at the same time 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 continuous discharge of liquid in the condensation device due to the continuous opening of the discharge port, and being unable to maintain a sufficient amount of condensate.

[0043] The scraping rod 134 contacts the bottom of the condenser tube 5, the fixed block 136 contacts the stopper 135, the shutter 138 contacts the inclined surface disk 101, and the surface of the stopper 135 close to the fixed block 136 is set as an arc surface. Through the contact, it is ensured that the scraping rod 134 can scrape the hexafluoroisopropyl methyl ether condensate condensed at the bottom of the condenser tube 5. Through the contact, it is ensured that the stopper 135 can make the fixed block 136 move along its arc surface. Through the contact, it is ensured that the shutter 138 can close the discharge port at the bottom of the inclined surface disk 101. By setting the arc surface, it is ensured that the fixed block 136 can gradually move downward.

[0044] The waste gas treatment device includes a second push rod 141, a sliding plate 142, a second elastic telescopic rod 143, an inclined plane block 144, an inclined plane rod 145 and an air extraction box 146. The second push rod 141 is rotatably installed at the bottom of the shutter 138. The sliding plate 142 is slidably installed on the inner wall of the tower body 1. The fixed end of the second elastic telescopic rod 143 is fixedly installed at the bottom of the inclined plane disk 101. The movable end of the second elastic telescopic rod 143 is fixedly installed at the top of the sliding plate 142. The inclined plane block 144 is fixedly installed on the side of the sliding plate 142 away from the inner wall of the tower body 1. The inclined plane rod 145 is slidably installed at the bottom of the inclined plane disk 101. The air extraction box 146 is fixedly installed on the left side of the tower body 1. When the second fan blade 1410 starts to blow outwards, it drives the waste gas inside the tower body 1 to flow when the air outlet is opened, and when it is inside the air extraction box 146, it passes through the inside of the absorption plate 147. When the waste gas enters the inside of the absorption plate 147, it contacts 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 waste gas, reducing air pollution, and preventing the direct discharge of waste gas from causing long-term impacts on the environment.

[0045] The waste gas treatment device further 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 air extraction box 146. The second motor 148 is fixedly installed inside the air extraction box 146. The rotating column 149 is fixedly installed at the output end of the second motor 148. 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 volume of the waste gas can be effectively controlled, avoiding excessive waste gas concentration or sudden waste gas release, ensuring that the waste gas emission meets environmental protection requirements, and reducing environmental pollution.

[0046] The sides of the second push rod 141 and the inclined plane rod 145 close to each other are provided with inclined planes. The sides of the inclined plane block 144 and the inclined plane rod 145 close to each other are provided with inclined planes. The absorption plate 147 is filled with activated carbon and other substances. By setting the inclined planes, it is ensured that the second push rod 141 can smoothly push the inclined plane rod 145 when moving. By setting the inclined planes, it is ensured that the inclined plane rod 145 can smoothly push the inclined plane block 144 when moving. By being filled with activated carbon and other substances, it is ensured that the absorption plate 147 can absorb the harmful substances in the waste gas.

[0047] 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.

[0048] While the door stopper 138 is moving, it drives the second push rod 141 to start moving. The movement of the second push rod 141 pushes the inclined plane rod 145 to start moving. The movement of the inclined plane rod 145 pushes the inclined plane block 144 to start moving. The movement of the inclined plane block 144 drives the sliding plate 142 to start moving. The movement of the sliding plate 142 opens the air outlet between the air extraction box 146 and the tower body 1. Driven by the second motor 148, the rotating column 149 starts to rotate. The rotation of the rotating column 149 drives the second fan blade 1410 to start rotating. When the second fan blade 1410 rotates, it starts to blow air outwards. When the air outlet is opened, it drives the waste gas inside the tower body 1 to circulate. When the waste gas is inside the air extraction box 146, it passes through the inside of the absorption plate 147. When the waste gas enters the inside of the absorption plate 147, it contacts with activated carbon and other substances, and adsorbs most of the harmful substances, ensuring the effective removal of hexafluoroisopropyl methyl ether and other harmful substances in the waste gas, reducing air pollution, and preventing the direct emission of waste gas from causing long-term impacts on the environment. When the second push rod 141 no longer pushes the inclined plane rod 145, the sliding plate 142 starts to reset and close the air outlet under the action of the second elastic telescopic rod 143. By intermittently opening the air outlet, the emission volume of the waste gas can be effectively controlled, avoiding the excessive concentration of the waste gas or sudden release of the waste gas, ensuring that the waste gas emission meets the environmental protection requirements, and reducing environmental pollution; when the air outlet is closed, the handle at the front of the absorption plate 147 can be pulled to pull out the lower absorption plate 147 to replace a brand-new absorption plate 147, ensuring that the absorption plate 147 can always efficiently absorb the waste gas so that harmful gases are fully absorbed or removed, and preventing the surface of the absorption plate 147 from being contaminated, saturated or blocked, resulting in a decrease in its absorption efficiency.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hexafluoroisopropyl methyl ether separation column with good absorption effect, comprising a column body (1), characterized in that: The inner wall of the tower body (1) is fixedly installed with an inclined plane plate (101), the bottom of the tower body (1) is fixedly installed with support feet (2), the front part of the tower body (1) is fixedly installed with an air inlet box (3), the front part of the tower body (1) is fixedly installed with a refrigeration box (4), the back of the refrigeration box (4) is fixedly installed with a condensing 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); Among them, the mixing device includes a first motor (6), a rotating shaft (7), a first fan blade (8), a long rod (9), a baffle plate (10), a fixing plate (11) and a first push rod (12). The first motor (6) is fixedly installed on the top of the tower body (1), the rotating shaft (7) is fixedly installed at the output end of the first motor (6), the first fan blade (8) is fixedly installed on the circumferential surface of the rotating shaft (7), the long rod (9) is fixedly installed at one end of the rotating shaft (7) far from the output end of the first motor (6), the baffle plate (10) is slidably installed on the inner wall of the tower body (1), the fixing plate (11) is fixedly installed on the top of the baffle plate (10), and the first push rod (12) is fixedly installed on the top of the fixing plate (11); The collecting device includes a fixing rod (131), a bottom plate (132), a first elastic telescopic rod (133), a scraping rod (134), a stop block (135) and a fixing block (136). The fixing rod (131) is fixedly installed at one end of the rotating shaft (7) far from the output end of the first motor (6), the bottom plate (132) is fixedly installed at one end of the fixing rod (131) far from the rotating shaft (7), the first elastic telescopic rod (133) is fixedly installed on the top of the bottom plate (132), the scraping rod (134) is fixedly installed at the movable end of the first elastic telescopic rod (133), the stop block (135) is fixedly installed on the inner wall of the tower body (1), and the fixing block (136) is fixedly installed at the bottom of the scraping rod (134) close to the stop block (135); The collecting device further includes a rotating rod (137) and a blocking door (138). The rotating rod (137) is fixedly installed at the bottom of the scraping rod (134), and the blocking door (138) is fixedly installed at one end of the rotating rod (137) far from the bottom plate (132); The exhaust gas treatment device includes a second push rod (141), a sliding plate (142), a second elastic telescopic rod (143), an inclined plane block (144), an inclined plane rod (145) and an air extraction box (146). The second push rod (141) is rotatably installed at the bottom of the blocking door (138), the sliding plate (142) is slidably installed on the inner wall of the tower body (1), the fixed end of the second elastic telescopic rod (143) is fixedly installed at the bottom of the inclined plane plate (101), the movable end of the second elastic telescopic rod (143) is fixedly installed on the top of the sliding plate (142), the inclined plane block (144) is fixedly installed on the side of the sliding plate (142) away from the inner wall of the tower body (1), the inclined plane rod (145) is slidably installed at the bottom of the inclined plane plate (101), and the air extraction box (146) is fixedly installed on the left side of the tower body (1).

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

3. The hexafluoroisopropyl methyl ether separation column with good absorption effect according to claim 2, characterized in that: The scraping rod (134) is in contact with the bottom of the condensing pipe (5), the fixed block (136) is in contact with the stop block (135), the blocking door (138) is in contact with the inclined plane disc (101), and the surface of the stop block (135) close to the fixed block (136) is set as an arc surface.

4. The separation column for hexafluoroisopropyl methyl ether with good absorption effect according to claim 3, characterized in that: The waste gas treatment device further 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 air extraction box (146), the second motor (148) is fixedly installed inside the air extraction 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).

5. The separation column for 1,1,1,3,3,3 - hexafluoroisopropyl methyl ether with good absorption effect according to claim 4, characterized in that: The surfaces of the second push rod (141) and the inclined plane rod (145) close to each other are set as inclined planes, the surface of the inclined plane block (144) in contact with the inclined plane rod (145) is set as an inclined plane, and the absorption plate (147) is filled with activated carbon.

6. A preparation process of hexafluoroisopropyl methyl ether, which uses a hexafluoroisopropyl methyl ether separation tower with good absorption effect described in claim 5, is characterized in that, It includes the following steps: Step 1: Start the refrigeration box (4) to make the condensing pipe (5) start to transfer temperature and reduce the temperature inside the tower body (1) to the lowest temperature at which hexafluoroisopropyl methyl ether liquefies. Then start the air inlet box (3) to introduce the mixed gas containing hexafluoroisopropyl methyl ether into the tower body (1). Step 2: Start the first motor (6), so that the first motor (6) drives the rotating shaft (7) to start rotating. The rotation of the rotating shaft (7) drives the first fan blade (8) to start rotating. The first 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 condensing pipe (5), making it more evenly distributed on the surface of the condensing pipe (5), improving the heat exchange efficiency between the mixed gas of hexafluoroisopropyl methyl ether and the surface of the condensing pipe (5), and promoting the condensation process of hexafluoroisopropyl methyl ether. Step 3: While the rotating shaft (7) is rotating, drive the long rod (9) to start rotating. The rotation of the long rod (9) pushes the first push rod (12) to start moving. The movement of the first 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. The movement of the baffle (10) opens the air inlet between the air inlet box (3) and the tower body (1). After the long rod (9) no longer pushes the first 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. Under the above reciprocation, the air inlet is intermittently opened, which can prevent the mixed gas of hexafluoroisopropyl methyl ether from entering the condensation system too fast, thereby helping to better control the condensation temperature and preventing excessive gas supply caused by too fast gas supply.

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