Carbon monoxide gas pretreatment and impurity removal equipment for industrial methyl formate preparation
By designing a combination of cleaning components, a rotating mechanism, and a filtering mechanism, the problem of impurities adhering to the inner wall of the tower was solved, achieving efficient impurity removal and a long equipment lifespan, while reducing energy consumption and operating costs.
Patent Information
- Application Number
- CN202511207262.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2025-11-28
AI Technical Summary
During the carbon monoxide gas pretreatment and impurity removal process, impurities easily adhere to the inner wall of the tower and are difficult to detach naturally, affecting the spraying impurity removal efficiency and equipment lifespan.
A cleaning device comprising a cleaning component, a rotating mechanism, and a filtering mechanism is designed. The cleaning component cleans the inner wall through a contact plate and a rotating plate in conjunction with a spring buffer structure. The rotating mechanism prevents impurities from accumulating. The filtering mechanism ensures unobstructed pipelines through a moving component and a cleaning brush. The feeding component prevents airflow turbulence through a diverter vane and a separating rod.
It achieves comprehensive cleaning of the inner wall of the tower, avoids the accumulation and blockage of impurities, improves the impurity removal efficiency, extends the equipment life, and reduces energy consumption and operating costs.
Smart Images
Figure CN121016408A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of industrial methyl formate preparation, in particular to a carbon monoxide gas pretreatment and impurity removal equipment for industrial methyl formate preparation. BACKGROUND
[0002] Industrial methyl formate is an important organic chemical intermediate and solvent, which is colorless, volatile, has a pungent odor, etc. Its boiling point is about 32 DEG C, flammable and easily soluble in organic solvents such as methanol and ethanol. In the industrial field, methyl formate is a key intermediate for preparing formic acid, methanol, acetic acid, ethylene glycol, propylene glycol and other chemicals, and is also widely used as a solvent for coatings, adhesives, cleaning agents, and can be used as a fuel additive or fumigant. In the preparation of industrial methyl formate, carbon monoxide (CO) is the core raw material, and its purity directly determines the catalyst activity, reaction efficiency and product quality. The raw material CO usually comes from coal chemical tail gas, natural gas reforming gas or industrial by-product gas, which contains harmful components such as sulfides, water, oxygen, carbon dioxide, solid impurities and inert gases, which need to be deeply purified by systematic pretreatment and impurity removal equipment.
[0003] In the process of carbon monoxide gas pretreatment and impurity removal, the carbon monoxide gas usually needs to be sprayed and removed by a spray tower, but after a long time of operation, some impurities will remain and adhere to the inner wall of the tower body, which are difficult to fall off naturally. SUMMARY
[0004] In order to achieve the above purpose, the present application is realized by the following technical scheme: a carbon monoxide gas pretreatment and impurity removal equipment for industrial methyl formate preparation, comprising:
[0005] The tower body is fixedly connected with a feed inlet on the side, and an exhaust port is fixedly connected on the top; a spray component is fixedly connected on the inner side of the tower body, and a water pipe is fixedly connected on the side of the spray component; the other end of the water pipe is fixedly connected with a storage component; a filler is fixedly connected in the middle of the inner side of the tower body; and a demisting component is fixedly connected on the side of the inner side of the tower body close to the exhaust port.
[0006] The cleaning component is used for cleaning and filtering the absorption liquid after the spray component removes impurities, and the bottom of the cleaning component is fixedly connected with the bottom of the inner cavity of the tower body.
[0007] The cleaning component comprises a cleaning shell, the bottom of the cleaning shell is uniformly provided with a telescopic rod 1, the bottom of the telescopic rod 1 is fixedly connected with the bottom of the inner cavity of the tower body, the top of the telescopic rod 1 is fixedly connected with the bottom of the cleaning shell, the middle of the bottom of the cleaning shell is fixedly connected with a telescopic rod 2, the bottom of the telescopic rod 2 is fixedly connected with the bottom of the inner cavity of the tower body, a first spring is sleeved on the telescopic rod 2, the top of the first spring is fixedly connected with the middle of the bottom of the cleaning shell, the bottom of the first spring is fixedly connected with the bottom of the inner cavity of the tower body, a contact mechanism is slidably connected to the inner side of the cleaning shell, and a rotating mechanism is rotatably connected to the bottom of the inner cavity of the cleaning shell.
[0008] Preferably, during the continuous spraying of the spraying component, the absorption liquid continuously flows downward in the inner cavity of the tower body, and then enters the cleaning shell; the cleaning shell first filters the larger impurity particles in the absorption liquid; when the absorption liquid continuously flows into the cleaning shell, the impact and the weight of the absorption liquid in the inner cavity jointly push the cleaning shell to move downward; at this time, the cleaning shell extrudes the first spring sleeved on the telescopic rod 2 in the middle of the bottom of the tower body, and the telescopic rod 2 and the telescopic rod 1 uniformly distributed on the bottom of the cleaning shell are synchronously retracted.
[0009] Preferably, the contact mechanism comprises a scraper and a fixed plate, the bottom of the scraper is fixedly connected with the top of the cleaning shell, the side of the fixed plate is fixedly connected with the inner side of the cleaning shell, the top of the fixed plate is uniformly provided with a connecting shaft, the bottom of the connecting shaft is slidably connected with the inner side of the fixed plate, the top of the connecting shaft is fixedly connected with a contact plate, the side of the contact plate is slidably connected with the inner side of the cleaning shell, a second spring is sleeved on the connecting shaft, the top of the second spring is fixedly connected with the bottom of the contact plate, and the bottom of the second spring is fixedly connected with the top of the fixed plate.
[0010] Preferably, during the continuous downward movement of the cleaning shell driven by the telescopic rod 1 and the telescopic rod 2 under the combined action of the impact of the absorption liquid and the weight of the absorption liquid in the inner cavity, the contact plate is driven to contact and relatively move with the inner wall of the tower body through the connecting shaft on the inner fixed plate; the top of the contact plate is designed in a circular arc shape, which makes the contact plate more closely contact the curved surface of the inner wall of the tower body when the cleaning shell moves downward, so that the impurities adhered to the inner wall are scraped off; most of the impurities are pollutants brought out of carbon monoxide by the absorption liquid, which can easily accumulate in large quantities if not cleaned in time, and the circular arc contact plate can avoid impurity residues and ensure the cleanliness of the inner wall of the tower body.
[0011] Preferably, at the same time, when the contact pressure of the contact plate and the inner wall of the tower body is too large, the contact plate moves the second spring through the connecting shaft, uses the elastic deformation of the spring to realize buffering, and then offsets the excessive extrusion force to avoid scratching damage caused by rigid collision of the contact plate and the inner wall.
[0012] Preferably, when the impact of the absorption liquid on the cleaning shell is less than the resilience of the first spring, the first spring drives the cleaning shell to reset upward through the telescopic rod one and the telescopic rod two at the bottom, at this time, the scraper at the bottom of the cleaning shell is designed in a triangular shape and will contact the inner wall of the tower body, the triangular structure increases the adhesion of the scraper and the inner wall, which can fill the blind area that may exist when the contact plate moves downward for cleaning, and ensures that the inner wall of the tower body is cleaned without dead angle in the reciprocating motion of the cleaning shell "moving downward-resetting".
[0013] Preferably, the rotating mechanism comprises a cleaning plate, the bottom of the cleaning plate is in contact with the bottom of the inner cavity of the cleaning shell, the top of the cleaning plate is fixedly connected with a rotating shaft, the bottom of the rotating shaft is rotatably connected with the bottom of the inner cavity of the cleaning shell, the top of the rotating shaft is fixedly connected with a guide plate, and the two sides of the rotating shaft are fixedly connected with a round rod, and the bottom of the round rod is fixedly connected with the top of the cleaning plate.
[0014] Preferably, when the absorption liquid impacts the cleaning shell, the impact force will act on the guide plate in the shell, so that the guide plate drives the cleaning plate to rotate synchronously in the inner side of the cleaning shell through the rotating shaft, and in this rotating process, the cleaning plate continuously scrapes the bottom of the inner cavity of the cleaning shell, so that while the cleaning shell filters and intercepts impurities, the impurities are prevented from accumulating at the bottom, thereby preventing the cleaning shell from being blocked by the impurities and affecting the flow of the absorption liquid.
[0015] Preferably, the storage component comprises a storage shell, the bottom of the inner cavity of the storage shell is fixedly connected with a water pump, the output end of the water pump is fixedly connected with a connecting pipe, the top of the connecting pipe is fixedly connected with the bottom of the water pipe, one side of the storage shell close to the tower body is fixedly connected with a recovery pipe, the other end of the recovery pipe is fixedly connected with the inner side of the tower body, and the inner side of the recovery pipe is fixedly connected with a filtering mechanism.
[0016] Preferably, after the absorption liquid is treated by the cleaning shell, it is stored at the bottom of the inner cavity of the tower body, at this time, the water pump is started, the input end of the water pump pumps the absorption liquid at the bottom of the tower body to the storage shell through the recovery pipe for collection and storage, and in the process that the absorption liquid flows through the recovery pipe, the filtering mechanism in the pipe filters the absorption liquid again, further intercepts impurities, and ensures the cleanliness of the absorption liquid entering the storage shell.
[0017] Preferably, the filtering mechanism comprises a mesh plate, the side surface of the mesh plate is fixedly connected with the inner side of the recovery pipe, the side surface of the mesh plate is rotatably connected with a cleaning brush, the side of the cleaning brush away from the mesh plate is fixedly connected with a spiral blade, and the side of the mesh plate away from the cleaning brush is fixedly connected with a moving assembly.
[0018] Preferably, after the water pump is started, the water pump continuously extracts the absorption liquid at the bottom of the inner cavity of the tower body, and the absorption liquid is transported to the storage shell along the recovery pipe; in this process, the suction force of the water pump drives the moving assembly to move in the filter pipe towards the mesh plate, and the moving assembly simultaneously scrapes and cleans the inner side of the recovery pipe, so that impurities are prevented from adhering to the pipe wall to cause pipeline blockage or increased flow resistance;
[0019] Preferably, the moving assembly comprises a moving frame, the side surface of the moving frame is fixedly connected with the inner side of the recovery pipe, one side of the moving frame close to the mesh plate is fixedly connected with a moving rod, the other end of the moving rod is fixedly connected with the mesh plate, a support frame is slidably connected with the moving rod, a cleaning frame is fixedly connected with the side surface of the support frame, a knocking block is fixedly connected with the side of the support frame close to the mesh plate, a third spring is sleeved with the support frame, one end of the third spring is fixedly connected with the moving frame, and the other end of the third spring is fixedly connected with the side surface of the support frame.
[0020] Preferably, the feeding component comprises a feeding pipe, the side surface of the feeding pipe is fixedly connected with a flared mouth, the other side of the flared mouth is fixedly connected with the inner side of the tower body, the inner side of the feeding pipe is fixedly connected with an inclined plate, the inner side of the feeding pipe close to the inclined plate is fixedly connected with a screen, the side of the screen close to the flared mouth is rotatably connected with a shunt blade, the middle part of the shunt blade is fixedly connected with a separation rod through a fixing bolt, and the side of the separation rod away from the shunt blade is rotatably connected with the side surface of the inclined plate and the screen.
[0021] The present application provides a kind of carbon monoxide gas pretreatment equipment for removing impurities for industrial methyl formate preparation.
[0022] 1. The carbon monoxide gas pretreatment equipment for removing impurities for industrial methyl formate preparation is provided with a contact mechanism, and the arc-shaped contact plate is attached to the inner wall for cleaning, which avoids the accumulation of impurities on the tower body, ensures the stable efficiency of spray cleaning, and prevents the contact plate from scratching the inner wall of the tower body by the buffer structure of the second spring, thereby prolonging the service life of the equipment.
[0023] 2. The carbon monoxide gas pretreatment equipment for removing impurities for industrial methyl formate preparation is provided with a rotating mechanism, and the cleaning plate rotates with the guide plate to clean the impurities at the bottom of the inner cavity in real time, which avoids accumulation and blockage, reduces the flow resistance caused by impurity accumulation, reduces the energy consumption of absorption liquid transportation, and ensures the stable filtering efficiency of the cleaning shell.
[0024] 3. The carbon monoxide gas pretreatment impurity removal equipment for industrial methyl formate preparation is provided with a filtering mechanism, a moving assembly cleans the inside of the recovery pipe under suction, reduces the increase of pipeline resistance caused by impurity adhesion, ensures smooth transportation of the absorption liquid, reduces water pump energy consumption, secondary filtration of the screen plate improves the cleanliness of the absorption liquid, and real-time cleaning of the screen plate by the cleaning brush can avoid pore blockage.
[0025] 4. The carbon monoxide gas pretreatment impurity removal equipment for industrial methyl formate preparation is provided with a moving assembly, a cleaning frame moves with the support frame to clean the inner wall of the recovery pipe in real time, reduces the increase of pipeline flow resistance caused by impurity adhesion, ensures smooth transportation of the absorption liquid, reduces the operating load of the water pump, the vibration generated by the knocking block loosens the impurities in the mesh, and the cleaning brush is used for cleaning, which improves the unblocking efficiency of the screen plate, avoids the blockage of the mesh to affect the filtration and recovery speed, reduces the long-term adhesion and corrosion of impurities to the inner wall of the recovery pipe, and the pressure damage caused by the blockage of the screen plate, prolongs the service life of the recovery pipe and the screen plate.
[0026] 5. The carbon monoxide gas pretreatment impurity removal equipment for industrial methyl formate preparation is provided with a feeding component, when the airflow drives the shunt blade to rotate, the axial airflow can be dispersed into circumferential uniform diffusion airflow, ensuring that the CO gas enters the tower body in a gentle and uniform flow state without local turbulence or dead angle, the shunt blade synchronously drives the separation rod to scrape the surface of the screen and the inclined plate, avoiding impurities from adhering and blocking the screen, ensuring that the screen is unblocked for a long time, after stopping gas supply, the cleaned dust slides along the inclined plate, avoiding the problem that impurities still remain after cleaning and are re-introduced into the tower body by airflow during restart. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 It is a structural schematic view of the carbon monoxide gas pretreatment impurity removal equipment for industrial methyl formate preparation of the present application; Figure 2 It is a sectional view of the present application; Figure 3 It is a structural schematic view of the cleaning component of the present application; Figure 4 It is a structural schematic view of the cleaning shell of the present application; Figure 5 It is a structural schematic view of the contact mechanism of the present application; Figure 6 It is a structural schematic view of the rotating mechanism of the present application; Figure 7 It is a structural schematic view of the storage component of the present application; Figure 8 It is a structural schematic view of the filtering mechanism of the present application; Figure 9 It is a structural schematic view of the moving assembly of the present application; Figure 10 It is a structural schematic view of the feeding component of the present application.
[0028] In the figure: 1, tower body; 2, feed component; 21, feed pipe; 22, inclined plate; 23, trumpet; 24, screen; 25, shunt leaf; 26, separation rod; 3, exhaust port; 4, water pipe; 5, storage component; 51, storage shell; 52, water pump; 53, connecting pipe; 54, recovery pipe; 55, filtering mechanism; 551, mesh plate; 552, spiral blade; 553, cleaning brush; 554, moving assembly; 5541, moving frame; 5542, moving rod; 5543, support frame; 5544, cleaning frame; 5545, knocking block; 5546, third spring; 6, spraying component; 7, demisting component; 8, filler; 9, cleaning component; 91, cleaning shell; 92, telescopic rod one; 93, telescopic rod two; 94, first spring; 95, contact mechanism; 951, scraper; 952, fixed plate; 953, connecting shaft; 954, contact plate; 955, second spring; 96, rotating mechanism; 961, rotating shaft; 962, cleaning plate; 963, round rod; 964, guide plate. DETAILED DESCRIPTION
[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0038] Please refer to Figures 1-2 The present application provides a technical solution: a carbon monoxide gas pretreatment and impurity removal equipment for industrial methyl formate preparation, comprising:
[0039] The tower body 1 is fixedly connected with the feed component 2 on the side surface, the exhaust port 3 is fixedly connected to the top of the tower body 1, the spraying component 6 is fixedly connected to the inner side of the tower body 1, the water pipe 4 is fixedly connected to the side surface of the spraying component 6, the other end of the water pipe 4 is fixedly connected with the storage component 5, the filler 8 is fixedly connected to the middle of the inner side of the tower body 1, and the demisting component 7 is fixedly connected to the side of the inner side of the tower body 1 close to the exhaust port 3;
[0040] The cleaning component 9 is used for cleaning and filtering the absorption liquid after the spraying component 6 removes impurities, and the bottom of the cleaning component 9 is fixedly connected with the bottom of the inner cavity of the tower body 1;
[0041] Please refer toFigures 1-4 The cleaning component 9 comprises a cleaning shell 91, the bottom of the cleaning shell 91 is uniformly provided with a telescopic rod 1, the bottom of the telescopic rod 1 is fixedly connected with the bottom of the inner cavity of the tower body 1, the top of the telescopic rod 1 is fixedly connected with the bottom of the cleaning shell 91, the middle of the bottom of the cleaning shell 91 is fixedly connected with a telescopic rod 2, the bottom of the telescopic rod 2 is fixedly connected with the bottom of the inner cavity of the tower body 1, the telescopic rod 2 is sleeved with a first spring 94, the top of the first spring 94 is fixedly connected with the middle of the bottom of the cleaning shell 91, the bottom of the first spring 94 is fixedly connected with the bottom of the inner cavity of the tower body 1, the inner side of the cleaning shell 91 is slidingly connected with a contact mechanism 95, and the bottom of the inner cavity of the cleaning shell 91 is rotatably connected with a rotating mechanism 96;
[0042] During the continuous spraying of the spraying component 6, the absorption liquid continuously flows downward in the inner cavity of the tower body 1, and then enters the cleaning shell 91. The cleaning shell 91 first filters the larger impurity particles in the absorption liquid. When the absorption liquid continuously flows into the cleaning shell 91, the impact effect and the weight of the absorption liquid in the inner cavity jointly act to push the cleaning shell 91 to move downward. At this time, the cleaning shell 91 will extrude the first spring 94 sleeved on the telescopic rod 2 in the middle of the bottom of the tower body 1, and the telescopic rod 2 and the telescopic rod 1 uniformly distributed on the bottom of the cleaning shell 91 will be synchronously contracted;
[0043] The cleaning shell 91 drives the contact mechanism 95 to contact and move relative to the inner wall of the tower body 1, so as to realize the cleaning of the inner wall of the tower body 1. At the same time, the impact force generated by the continuous spraying of the absorption liquid drives the rotating mechanism 96 to rotate in the inner side of the cleaning shell 91, so as to rotate and clean the impurities intercepted by the cleaning shell 91. Finally, the treated absorption liquid is stored in the bottom of the inner cavity of the tower body 1, so as to be recycled by the storage component 5 subsequently.
[0044] Please refer to Figures 1-5 The contact mechanism 95 comprises a scraper 951 and a fixed plate 952, the bottom of the scraper 951 is fixedly connected with the top of the cleaning shell 91, the side of the fixed plate 952 is fixedly connected with the inner side of the cleaning shell 91, the top of the fixed plate 952 is uniformly provided with a connecting shaft 953, the bottom of the connecting shaft 953 is slidingly connected with the inner side of the fixed plate 952, the top of the connecting shaft 953 is fixedly connected with a contact plate 954, the side of the contact plate 954 is slidingly connected with the inner side of the cleaning shell 91, the connecting shaft 953 is sleeved with a second spring 955, the top of the second spring 955 is fixedly connected with the bottom of the contact plate 954, and the bottom of the second spring 955 is fixedly connected with the top of the fixed plate 952.
[0045] In the process of cleaning shell 91 being impacted by the absorption liquid and the weight of the absorption liquid in the cavity, through the extension rod one 92 and the extension rod two 93, the cleaning shell 91 will be driven to continuously move downward, the cleaning shell 91 will drive the contact plate 954 to contact and move relative to the inner wall of the tower body 1 through the connecting shaft 953 on the inner fixed plate 952, the top of the contact plate 954 is designed in a circular arc shape, which makes the contact plate 954 more closely contact the curved surface of the inner wall of the tower body 1 when it moves downward with the cleaning shell 91, so as to achieve full contact and scrape off the impurities attached to the inner wall. These impurities are mostly pollutants brought out of carbon monoxide by the absorption liquid, which can easily accumulate in large quantities if not cleaned in time. The circular arc contact plate 954 can avoid impurity residues and ensure the cleanliness of the inner wall of the tower body 1.
[0046] At the same time, when the contact pressure between the contact plate 954 and the inner wall of the tower body 1 is too large, the contact plate 954 will be pulled to move by the second spring 955 through the connecting shaft 953, and the elastic deformation of the spring will be used to achieve buffering, so as to offset the excessive extrusion force and avoid scratching damage caused by the rigid collision between the contact plate 954 and the inner wall.
[0047] When the impact of the absorption liquid on the cleaning shell 91 and the weight of the absorption liquid in the cavity are less than the rebound force of the first spring 94, the first spring 94 will drive the cleaning shell 91 to reset upward through the extension rod one 92 and the extension rod two 93 at the bottom. At this time, the scraper 951 at the bottom of the cleaning shell 91 is designed in a triangular shape and will contact the inner wall of the tower body 1. The triangular structure increases the adhesion of the scraper 951 to the inner wall, which can fill the blind area that may exist when the contact plate 954 moves downward for cleaning, and ensure that the inner wall of the tower body 1 is cleaned without dead angle in the reciprocating motion of the cleaning shell 91 "moving downward-resetting".
[0048] Please refer to Figures 1-6 , the rotating mechanism 96 includes a cleaning plate 962, the bottom of the cleaning plate 962 is in contact with the bottom of the inner cavity of the cleaning shell 91, the top of the cleaning plate 962 is fixedly connected with a rotating shaft 961, the bottom of the rotating shaft 961 is rotatably connected with the bottom of the inner cavity of the cleaning shell 91, the top of the rotating shaft 961 is fixedly connected with a guide plate 964, and the two sides of the rotating shaft 961 are fixedly connected with a round rod 963, and the bottom of the round rod 963 is fixedly connected with the top of the cleaning plate 962.
[0049] When the absorption liquid impacts the cleaning shell 91, the impact force will act on the guide plate 964 in the shell, so that the guide plate 964 drives the cleaning plate 962 to rotate synchronously in the inner side of the cleaning shell 91 through the rotating shaft 961. In this rotating process, the cleaning plate 962 will continuously scrape the bottom of the inner cavity of the cleaning shell 91. At the same time, the cleaning shell 91 filters and intercepts impurities, so as to prevent the impurities from accumulating at the bottom and affecting the flow of the absorption liquid due to the blockage of the cleaning shell 91.
[0050] Please refer to Figures 1-7The application provides a technical scheme that the storage component 5 comprises a storage shell 51, the bottom of the inner cavity of the storage shell 51 is fixedly connected with a water pump 52, the output end of the water pump 52 is fixedly connected with a connecting pipe 53, the top of the connecting pipe 53 is fixedly connected with the bottom of a water pipe 4, one side of the storage shell 51 close to the tower body 1 is fixedly connected with a recovery pipe 54, the other end of the recovery pipe 54 is fixedly connected with the inner side of the tower body 1, and the inner side of the recovery pipe 54 is fixedly connected with a filtering mechanism 55.
[0051] The absorption liquid is stored in the bottom of the inner cavity of the tower body 1 after being treated by the cleaning shell 91, at the moment, the water pump 52 is started, the water pump 52 inputs the absorption liquid at the bottom of the tower body 1 to the storage shell 51 through the recovery pipe 54 and collects and stores the absorption liquid, in the process that the absorption liquid flows through the recovery pipe 54, the filtering mechanism 55 in the pipe can perform secondary filtration on the absorption liquid, further intercept impurities and ensure the cleanliness of the absorption liquid entering the storage shell 51.
[0052] When the absorption liquid needs to be used, the water pump 52 outputs the absorption liquid in the storage shell 51 to the water pipe 4 through the connecting pipe 53, the absorption liquid enters the spraying component 6 through the water pipe 4 and is used for spraying and removing impurities again, thereby forming recycling.
[0053] Please refer to Figures 1-8 The filtering mechanism 55 comprises a mesh plate 551, the side surface of the mesh plate 551 is fixedly connected with the inner side of the recovery pipe 54, the side surface of the mesh plate 551 is rotationally connected with a cleaning brush 553, the side, away from the mesh plate 551, of the cleaning brush 553 is fixedly connected with a spiral blade 552, and the side, away from the cleaning brush 553, of the mesh plate 551 is fixedly connected with a moving assembly 554.
[0054] After the water pump 52 is started, the water pump 52 continuously extracts the absorption liquid at the bottom of the inner cavity of the tower body 1, the absorption liquid is transported to the storage shell 51 along the recovery pipe 54, in the process, the suction force of the water pump 52 drives the moving assembly 554 to move in the filtering pipe towards the mesh plate 551, the moving assembly 554 synchronously scrapes and cleans the inner side of the recovery pipe 54, so that impurities are prevented from adhering to the pipe wall and causing pipeline blockage or flow resistance increase.
[0055] When the absorption liquid continuously flows through the mesh plate 551, the mesh plate 551 performs secondary filtration on the absorption liquid and further intercepts small impurities, meanwhile, the impact force of the absorption liquid passing through the mesh plate 551 drives the spiral blade 552 to rotate, the spiral blade 552 drives the cleaning brush 553 to synchronously rotate on the side surface of the mesh plate 551, the surface of the mesh plate 551 is cleaned in real time, impurities are prevented from accumulating in the pores of the mesh plate 551 and the mesh plate 551 is prevented from being blocked after long-time filtration.
[0056] Please refer to Figures 1-9The moving component 554 includes a moving frame 5541, the side of which is fixedly connected to the inside of the recycling tube 54. A moving rod 5542 is fixedly connected to the side of the moving frame 5541 near the mesh plate 551. The other end of the moving rod 5542 is fixedly connected to the mesh plate 551. A support frame 5543 is slidably connected to the moving rod 5542. A cleaning frame 5544 is fixedly connected to the side of the support frame 5543. A striking block 5545 is fixedly connected to the side of the support frame 5543 near the mesh plate 551. A third spring 5546 is sleeved on the support frame 5543. One end of the third spring 5546 is fixedly connected to the moving frame 5541, and the other end of the third spring 5546 is fixedly connected to the side of the support frame 5543.
[0057] When the water pump 52 draws the absorbent liquid in the inner cavity of the tower body 1, the suction force it generates will cause the absorbent liquid to continuously flow into the recovery pipe 54. During this process, the absorbent liquid entering the recovery pipe 54 will impact the support frame 5543 inside the pipe, causing the support frame 5543 to drive the cleaning frame 5544 to move towards the mesh plate 551 on the moving rod 5542. At the same time, it pulls the third spring 5546 sleeved on the moving rod 5542. During the movement, the cleaning frame 5544 will contact and scrape the inner wall of the recovery pipe 54 to prevent impurities from remaining and adhering to the pipe wall.
[0058] As the support frame 5543 continues to move toward the mesh plate 551, the striking block 5545 at its end will come into contact with and collide with the mesh plate 551. The vibration will loosen the impurities blocking the mesh of the mesh plate 551. This vibration-assisted action makes it easier for the cleaning brush to clean the mesh plate 551 and ensures that the mesh is unobstructed.
[0059] Please see Figures 1-10 The feeding component 2 includes a feeding pipe 21. A bell mouth 23 is fixedly connected to the side of the feeding pipe 21. The other side of the bell mouth 23 is fixedly connected to the inner side of the tower body 1. An inclined plate 22 is fixedly connected to the inner side of the feeding pipe 21. A screen 24 is fixedly connected to the side of the inner side of the feeding pipe 21 near the inclined plate 22. A flow divider 25 is rotatably connected to the side of the screen 24 near the bell mouth 23. A separation rod 26 is fixedly connected to the middle of the flow divider 25 by a fixing bolt. The side of the separation rod 26 away from the flow divider 25 is rotatably connected to the side of the inclined plate 22 and the screen 24. When CO-containing gas enters the feeding pipe 21 from the conveying pipe and then enters the tower body 1, the traditional straight pipe gas inlet is prone to generating a jet effect. The high-speed airflow directly impacts the inner wall of the tower body 1, which not only causes the flow field inside the tower to be turbulent, but also makes it impossible for dust and other impurities entrained in the gas to settle evenly.
[0060] At the connection of the feed pipe 21 and the tower body 1, a bell mouth 23 is arranged, which is designed in a gradually expanding manner along the gas flow direction, so as to gradually slow down the high-speed gas flow in the conveying pipeline, avoid the high-speed gas flow directly impacting the tower wall, and weaken the interference of the "jet effect" on the flow field in the tower from the source;
[0061] A screen 24 is arranged in the feed pipe 21, which can directly intercept the dust impurities mixed in the gas when the CO gas flows through the feed pipe 21, preliminarily realizes the gas-solid separation, and reduces the total amount of impurities entering the tower body 1;
[0062] A freely rotating shunt blade 25 is arranged in the feed pipe 21 between the screen 24 and the bell mouth 23, when the CO gas passing through the screen 24 continuously flows to the bell mouth 23, the gas flow impact force drives the shunt blade 25 to rotate around the central axis, the rotating shunt blade 25 can disperse and shunt the gas which originally flows along the axial direction of the feed pipe 21, guide the gas flow to uniformly diffuse along the side surface of the screen 24 and the inner wall of the bell mouth 23, and finally make the gas enter the tower body 1 in a gentle and uniform flow state, solve the problem of turbulent flow in the tower;
[0063] In order to avoid the dust intercepted by the screen 24 adhering to the surface of the screen 24 and the side surface of the inclined plate 22, resulting in impurity residues or screen 24 blockage, a circle of inclined plates 22 is fixed around the inner side wall of the feed pipe 21 close to the screen 24, and the shunt blade 25 is connected with a separation rod 26 through a central fixing bolt, the length and position of the separation rod 26 correspond to the side surface of the screen 24 and the side surface of the inclined plate 22 respectively, when the shunt blade 25 rotates under the action of the gas flow, it will synchronously drive the separation rod 26 to rotate through the fixing bolt, and the separation rod 26 can scrape and clean the residual dust adhering to the side surface of the screen 24 and the side surface of the inclined plate 22 during the rotation process, so as to ensure that the screen 24 always keeps unobstructed;
[0064] When the gas delivery is stopped, the dust impurities cleaned by the separation rod 26 will naturally slide along the inclined plate 22 to the bottom of the feed pipe 21 due to the guide of the inclined surface of the inclined plate 22, so as to avoid that the cleaned dust still remains in the screen 24, the inclined plate 22 or the feed pipe 21, and prevent the impurities from being re-brought into the tower body 1 by the gas flow when the equipment is restarted subsequently.
[0065] Specific working process:
[0066] After the carbon monoxide gas continuously enters the tower body 1 through the feed part 2, the absorption liquid in the storage part 5 is continuously delivered to the spraying part 6 through the water pipe 4, and the absorption liquid is uniformly sprayed by the spraying part 6, at this time, the gas and the absorption liquid form counter-current contact in the tower, and the impurities are removed through the mass transfer and chemical reaction;
[0067] The tower is filled with 8 layers of packing. The rising carbon monoxide feed gas flows through the gaps in the packing 8 or the openings in the tower plate, and fully contacts and reacts with the sprayed absorbent liquid, so that impurities such as sulfides and CO in the gas can be removed. The purified gas then moves to the top of the tower.
[0068] As the gas comes into countercurrent contact with the absorbent, it carries some absorbent droplets due to turbulence and impact. The demister at the top of the tower captures these droplets through mechanisms such as interception, inertial collision, and diffusion. After the droplets converge, they flow back into the tower along the tower wall to prevent the absorbent from being lost.
[0069] Finally, the absorbent liquid after spraying is processed by the cleaning component 9 and then enters the storage component 5 for recycling and storage, thus achieving reuse.
[0070] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A carbon monoxide gas impurity removal apparatus for the pretreatment of industrial methyl formate production, characterized by, include: The tower body (1) has a feeding component (2) fixedly connected to its side, an exhaust port (3) fixedly connected to its top, a spray component (6) fixedly connected to its inner side, a water pipe (4) fixedly connected to the side of the spray component (6), a storage component (5) fixedly connected to the other end of the water pipe (4), a packing material (8) fixedly connected to the middle of the inner side of the tower body (1), and a demisting component (7) fixedly connected to the inner side of the tower body (1) near the exhaust port (3). Cleaning component (9) is used to clean and filter the absorbent liquid after the spray component (6) removes impurities. The bottom of the cleaning component (9) is fixedly connected to the bottom of the inner cavity of the tower body (1). The cleaning component (9) includes a cleaning housing (91), a telescopic rod one (92) is evenly arranged at the bottom of the cleaning housing (91), a telescopic rod two (93) is fixedly connected to the middle of the bottom of the cleaning housing (91), a first spring (94) is sleeved on the telescopic rod two (93), a contact mechanism (95) is slidably connected to the inner side of the cleaning housing (91), and a rotating mechanism (96) is rotatably connected to the bottom of the inner cavity of the cleaning housing (91). The contact mechanism (95) includes a scraper (951) and a fixing plate (952). The bottom of the scraper (951) is fixedly connected to the top of the cleaning housing (91), and the side of the fixing plate (952) is fixedly connected to the inner side of the cleaning housing (91). A connecting shaft (953) is evenly arranged on the top of the fixing plate (952), and a contact plate (954) is fixedly connected to the top of the connecting shaft (953). A second spring (955) is sleeved on the connecting shaft (953).
2. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 1, characterized in that: The bottom of the first telescopic rod (92) is fixedly connected to the bottom of the inner cavity of the tower body (1), the top of the first telescopic rod (92) is fixedly connected to the bottom of the cleaning shell (91), the bottom of the second telescopic rod (93) is fixedly connected to the bottom of the inner cavity of the tower body (1), the top of the first spring (94) is fixedly connected to the middle of the bottom of the cleaning shell (91), and the bottom of the first spring (94) is fixedly connected to the bottom of the inner cavity of the tower body (1).
3. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 1, characterized in that: The side of the contact plate (954) is slidably connected to the inside of the cleaning housing (91), the bottom of the connecting shaft (953) is slidably connected to the inside of the fixing plate (952), the top of the second spring (955) is fixedly connected to the bottom of the contact plate (954), and the bottom of the second spring (955) is fixedly connected to the top of the fixing plate (952).
4. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 1, characterized in that: The rotating mechanism (96) includes a cleaning plate (962), a rotating shaft (961) is fixedly connected to the top of the cleaning plate (962), a guide plate (964) is fixedly connected to the top of the rotating shaft (961), and round rods (963) are fixedly connected to both sides of the rotating shaft (961). The bottom of the round rods (963) is fixedly connected to the top of the cleaning plate (962).
5. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 4, characterized in that: The bottom of the rotating shaft (961) is rotatably connected to the bottom of the inner cavity of the cleaning housing (91), and the bottom of the cleaning plate (962) is in contact with the bottom of the inner cavity of the cleaning housing (91).
6. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 1, characterized in that: The storage component (5) includes a storage shell (51), a water pump (52) is fixedly connected to the bottom of the inner cavity of the storage shell (51), a connecting pipe (53) is fixedly connected to the output end of the water pump (52), the top of the connecting pipe (53) is fixedly connected to the bottom of the water pipe (4), a recovery pipe (54) is fixedly connected to the side of the storage shell (51) near the tower body (1), the other end of the recovery pipe (54) is fixedly connected to the inner side of the tower body (1), and a filter mechanism (55) is fixedly connected to the inner side of the recovery pipe (54).
7. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 6, characterized in that: The filtration mechanism (55) includes a mesh plate (551), the side of which is fixedly connected to the inside of the recovery pipe (54), a cleaning brush (553) is rotatably connected to the side of the mesh plate (551), a spiral blade (552) is fixedly connected to the side of the cleaning brush (553) away from the mesh plate (551), and a moving component (554) is fixedly connected to the side of the mesh plate (551) away from the cleaning brush (553).
8. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 7, characterized in that: The movable component (554) includes a movable frame (5541), a movable rod (5542) is fixedly connected to the side of the movable frame (5541) near the mesh plate (551), the other end of the movable rod (5542) is fixedly connected to the mesh plate (551), a support frame (5543) is slidably connected to the movable rod (5542), a cleaning frame (5544) is fixedly connected to the side of the support frame (5543), a tapping block (5545) is fixedly connected to the side of the support frame (5543) near the mesh plate (551), and a third spring (5546) is sleeved on the support frame (5543).
9. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 8, characterized in that: The side of the movable frame (5541) is fixedly connected to the inside of the recycling tube (54), one end of the third spring (5546) is fixedly connected to the movable frame (5541), and the other end of the third spring (5546) is fixedly connected to the side of the support frame (5543).
10. The carbon monoxide gas pretreatment and impurity removal equipment for the preparation of industrial methyl formate according to claim 1, characterized in that: The feeding component (2) includes a feeding pipe (21), a bell mouth (23) is fixedly connected to the side of the feeding pipe (21), the other side of the bell mouth (23) is fixedly connected to the inner side of the tower body (1), an inclined plate (22) is fixedly connected to the inner side of the feeding pipe (21), a screen (24) is fixedly connected to the side of the inner side of the feeding pipe (21) near the inclined plate (22), a diverter (25) is rotatably connected to the side of the screen (24) near the bell mouth (23), a separating rod (26) is fixedly connected to the middle of the diverter (25) by a fixing bolt, and the side of the separating rod (26) away from the diverter (25) is rotatably connected to the side of the inclined plate (22) and the screen (24).