N-butyl acrylate condensation recovery washing system and washing process thereof

Abstract

The invention relates to the technical field of n-butyl acrylate recovery, in particular to an n-butyl acrylate condensation recovery washing system and a washing process thereof.The n-butyl acrylate condensation recovery washing system comprises a condensation recovery device, a controller, a washing device and a supporting frame, and the condensation recovery device comprises a condensation tank, a cooler, a cooling pump and a conveying pipe. The metal organic framework adsorption particles and the pulse back flushing device are combined, so that specific adsorption of n-butyl acrylate molecules is realized, n-butyl acrylate waste gas released by heating enters a plurality of spiral condensation pipes, the heat exchange area of the waste gas and cooling liquid is increased, efficient recovery of liquid n-butyl acrylate is realized, and the recovery rate of the liquid n-butyl acrylate is increased. A hollow fiber membrane in the washing device enables fine gas flow to form thin layer flow on the surface of a membrane hole, and a plurality of nozzles realize uniform dispersion of micron-sized liquid drops in a spiral washing pipe, so that water is in full contact with waste gas, and therefore, spirally rising thin layer flow gas is washed with water, and residual n-butyl acrylate in the waste gas is removed.

Description

Technical Field

[0001] The invention relates to the technical field of n-butyl acrylate recovery, in particular to an n-butyl acrylate condensation recovery water washing system and a water washing process thereof. Background Art

[0002] Butyl acrylate is an organic compound, a colorless, transparent liquid, insoluble in water, but miscible in ethanol and ether. Butyl acrylate is mainly used to make polymer monomers for fibers, rubber, and plastics. It is used in the organic industry to make adhesives, emulsifiers, and as an organic synthesis intermediate. It is used in the papermaking industry to make paper reinforcing agents, and in the coatings industry to make acrylic coatings.

[0003] During the distillation and purification stage of producing n-butyl acrylate, the n-butyl acrylate vapor distilled from the top of the distillation tower needs to be effectively treated. If it is directly discharged, it will not only waste resources but also cause harm to the environment and human health. At present, the treatment of this type of vapor is usually carried out by combining condensation recovery and water washing. The existing condensation recovery and water washing device has some shortcomings. The condensation recovery and water washing device usually directly condenses the vapor. At the same time, during the water washing treatment, the water cannot fully contact the vapor, resulting in a small amount of n-butyl acrylate recovery and low condensation efficiency, which leads to waste of resources.

[0004] In view of this, the present application proposes a condensation recovery and water washing system for n-butyl acrylate and a water washing process thereof. Summary of the Invention

[0005] The object of the present invention is to provide a condensation recovery and water washing system for n-butyl acrylate and a water washing process thereof to solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following technical solutions: A condensation recovery and water washing system for n-butyl acrylate includes a condensation recovery device, a controller, a water washing device, and a support frame. The condensation recovery device includes a condensation tank, a cooler, a cooling pump, and a delivery pipe. An adsorption recovery assembly is fixedly installed inside the top of the condensation tank, and multiple condensation shells are fixedly installed in a ring array inside the bottom of the condensation tank. The adsorption recovery assembly includes a fixed shell, an adsorption shell, and a connecting pipe. The adsorption shell is fixed inside the fixed shell. A heating device is fixedly connected to the outer edge of the adsorption shell, and a pulse backblower is fixedly installed at the bottom of the adsorption shell. The interior of the adsorption shell is filled with metal-organic framework adsorption particles. The condensation shell and the adsorption shell are fixedly connected by a connecting pipe. The water washing device includes a water washing tank, a liquid storage tank, an air outlet pipe, a drain pipe, a diverter plate and a vertical pipe. The vertical pipe is fixedly installed inside the water washing tank. The outer edge of the vertical pipe is fixedly connected with a spiral water washing pipe, and the inside of the vertical pipe is fixedly connected with a spiral pipe. The top of the spiral water washing pipe is fixedly connected to the air outlet pipe, and the bottom end of the spiral water washing pipe is fixedly connected to the drain pipe. The outer edge of the spiral pipe is spirally arranged with multiple nozzles, and one end of the nozzle extends to the inside of the spiral water washing pipe. The top of the diverter plate is fixedly connected to the bottom of the spiral water washing pipe, and the inside of the diverter plate is filled with hollow fiber membranes.

[0007] Furthermore, the liquid storage tank is fixedly installed on the top of the water washing tank, one end of the liquid storage tank is fixedly connected to the water washing pump, and the other end of the water washing pump is fixedly connected to the top of the spiral tube.

[0008] Furthermore, a motor is fixedly installed on the bottom wall of the washing tank, a dispersion plate is fixed on the bottom of the diverter plate, a movable plate is arranged between the diverter plate and the dispersion plate, the top output end of the motor is fixedly connected to the bottom of the movable plate, and a plurality of blades are fixed in a circular array on the top of the movable plate.

[0009] Furthermore, a collecting pipe is fixedly installed on the outer wall of the condensation tank, the two ends of the cooling pump are respectively connected to the cooler and the delivery pipe, multiple condensation shells are provided with condensation pipes, the bottom wall of the condensation tank is fixedly connected to the collecting frame, and the top of the condensation pipe is evenly fixed with multiple convex pipes, and the condensation pipe is connected to the connecting pipe through multiple convex pipes.

[0010] Furthermore, the bottom end of the condenser is fixedly connected to the top of the collection frame, the outer wall of the condenser is provided with a cooling pipe, the top end of the cooling pipe extends out of the condenser tank and is fixedly connected to the collection pipe, and the bottom end of the cooling pipe is fixedly connected to the bottom end of the delivery pipe.

[0011] Furthermore, the cooling pump and the cooler are both fixedly installed on the top of the condensation tank, one end of the collecting frame is fixedly connected to the liquid outlet pipe, and the other end of the collecting frame is fixedly connected to the transfer pipe, the top side of the condensation tank is fixedly connected to the air inlet pipe, and one end of the transfer pipe is fixedly connected to the bottom of the dispersion plate.

[0012] Furthermore, one end of the cooler is fixedly connected to a recovery pump, and the other end of the recovery pump is fixedly connected to a reflux pipe, and the recovery pump is connected to the collection pipe through the reflux pipe.

[0013] Furthermore, the condensation recovery device includes an adsorption recovery unit, a condensation control module and a circulation control unit, and the water washing device includes a dispersion unit and a spiral water washing unit: The adsorption recovery unit uses metal organic framework adsorption particles and a pulse backflushing device to achieve specific adsorption of n-butyl acrylate molecules. After adsorption saturation, the temperature is increased by a heating device to release n-butyl acrylate. The condensation control unit realizes condensation recovery of the released n-butyl acrylate through a cooler, a cooling pump and a plurality of condensation pipes; The circulation control unit realizes the recovery and recycling of the coolant through the recovery pump and return pipe; The dispersion unit drives multiple blades to rotate through a motor, quickly breaking up aggregated particles in the diverted gas discharged from the dispersion plate; The spiral water washing unit uses multiple spiral nozzles to achieve uniform dispersion of micron-level droplets, thereby washing the spirally rising diverted gas in the spiral water washing pipe.

[0014] A water washing process for a condensation recovery water washing system for n-butyl acrylate comprises the following steps: S1. First, n-butyl acrylate vapor produced in the distillation and purification stage of n-butyl acrylate production is fed into an adsorption recovery component through an air inlet pipe. A controller controls the activation of the adsorption recovery unit. The metal-organic framework adsorption particles and a pulse backflushing device are used to specifically adsorb n-butyl acrylate molecules. After adsorption saturation, the temperature is increased by a heating device to release n-butyl acrylate. S2. The controller controls the condensation control unit to turn on. The released n-butyl acrylate waste gas enters multiple condensing tubes through the connecting pipe. The cooling pump delivers coolant to the multiple cooling tubes through the delivery pipe. The coolant flows from bottom to top outside the condensing tubes to cool the waste gas. The coolant returns to the cooler through the collection pipe and the reflux pipe for recycling, so that the n-butyl acrylate in the waste gas is condensed into liquid and collected in the collection frame. S3. The controller turns on the dispersion unit, and the exhaust gas enters the dispersion plate through the transfer pipe. The exhaust gas is dispersed into a fine gas flow under the action of the porous dispersion plate. The fine gas flow passes through the hollow fiber membrane, forming a thin laminar flow on the membrane pore surface; S4. The controller controls the opening of the spiral water washing unit. After the laminar flow enters from the bottom of the spiral water washing pipe, the washing liquid flows into the spiral pipe under the action of the water washing pump, and is then sprayed into the spiral water washing pipe under the action of multiple nozzles, thereby washing the spirally rising laminar flow gas to remove the residual n-butyl acrylate in the gas. The washing liquid is discharged through the drain pipe for treatment, and finally the gas is discharged to the outside through the exhaust pipe.

[0015] Beneficial effects of the present invention: 1. In the present invention, by adding an adsorption recovery component to the condensation recovery system, the metal organic framework adsorption particles use MOFs materials to specifically adsorb n-butyl acrylate molecules, achieving a synergistic effect of physical adsorption and chemical adsorption. By combining the metal organic framework adsorption particles with a pulse backflushing device, the adsorption effect of n-butyl acrylate molecules in the steam is effectively improved, and specific adsorption of n-butyl acrylate molecules is achieved. After adsorption saturation, the controller controls the heating device to increase the temperature, thereby releasing n-butyl acrylate. The released n-butyl acrylate waste gas enters multiple spiral condensers, increasing the flow path length of the waste gas in the condenser, increasing the heat exchange area between the waste gas and the coolant, and significantly improving the condensation effect. The n-butyl acrylate in the waste gas is condensed into a liquid, thereby achieving efficient recovery of liquid n-butyl acrylate. 2. In the present invention, by setting up a water washing device, the waste gas containing a small amount of n-butyl acrylate is dispersed into a fine gas flow under the action of a dispersion plate, and the fine gas flow forms a thin laminar flow on the surface of the membrane pore through the hollow fiber membrane, and at the same time, trace polymer impurities in the waste gas can be removed synchronously. The thin laminar flow enters from the bottom end of the spiral water washing pipe, and multiple nozzles are used to realize uniform dispersion of micron-level droplets in the spiral water washing pipe, so that water and waste gas are fully in contact, thereby washing the spirally rising thin laminar flow gas with water to remove residual n-butyl acrylate and other pollutants in the waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a n-butyl acrylate condensation recovery and water washing system of the present invention; Figure 2 This is a schematic diagram of the rear side structure of a n-butyl acrylate condensation recovery and water washing system of the present invention; Figure 3 This is a front cross-sectional view of an adsorption recovery component of a condensation recovery and water washing system for n-butyl acrylate according to the present invention; Figure 4 This is a schematic structural diagram of multiple condensation shells of a condensation recovery and water washing system for n-butyl acrylate according to the present invention; Figure 5 This is a front cross-sectional view of a condensation shell of a n-butyl acrylate condensation recovery and water washing system according to the present invention; Figure 6 This is a schematic diagram of the internal structure of a water washing device of a water washing system for condensation recovery of n-butyl acrylate according to the present invention; Figure 7 The present invention provides a front cross-sectional view of a water washing device of a condensation recovery water washing system for n-butyl acrylate.

[0017] Figure: 1, condensate recovery device; 2, controller; 3, water washing device; 4, support frame; 11, condensate tank; 12, air inlet pipe; 13, liquid outlet pipe; 14, cooler; 15, cooling pump; 16, recovery pump; 17, reflux pipe; 18, collection pipe; 19, transfer pipe; 20, delivery pipe; 21, adsorption recovery assembly; 22, condensate housing; 23, collection frame; 24, condensate pipe; 25, convex pipe; 26, cooling pipe; 211, fixed housing; 212 , adsorption shell; 213, heating device; 214, metal organic framework adsorption particles; 215, pulse backblower; 216, connecting pipe; 31, water washing tank; 32, liquid storage tank; 33, air outlet pipe; 34, drain pipe; 35, water washing pump; 36, spiral tube; 37, diverter plate; 38, motor; 39, vertical pipe; 310, spiral water washing pipe; 311, dispersion plate; 312, movable plate; 313, blades; 314, hollow fiber membrane; 315, nozzle. DETAILED DESCRIPTION

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

[0019] Example 1: Please refer to Figure 1-Figure 7, This design proposes an implementation method, a condensation recovery and water washing system for n-butyl acrylate, including a condensation recovery device 1, a controller 2, a water washing device 3 and a support frame 4, the condensation recovery device 1 includes a condensation tank 11, a cooler 14, a cooling pump 15 and a delivery pipe 20, an adsorption recovery component 21 is fixedly installed inside the top of the condensation tank 11, and a plurality of condensation shells 22 are fixedly installed in a circular array inside the bottom of the condensation tank 11, the adsorption recovery component 21 includes a fixed shell 211, an adsorption shell 212 and a connecting pipe 216, the adsorption shell 212 is fixed inside the fixed shell 211, the outer edge of the adsorption shell 212 is fixedly connected to a heating device 213, and the bottom of the adsorption shell 212 is fixedly installed with a pulse backflush 215, the interior of the adsorption shell 212 is filled with metal organic framework adsorption particles 214, the condensation shell 22 and the adsorption shell 212 are fixedly connected by a connecting pipe 216, the outer wall of the condensation tank 11 is fixedly installed with a collecting pipe 18, and the two ends of the cooling pump 15 are respectively connected to the cooler 14 and the delivery pipe 20, Condensation tubes 24 are provided in multiple condensation shells 22. The bottom wall of the condensation tank 11 is fixedly connected to the collection frame 23. The top of the condensation tube 24 is evenly fixedly connected with multiple protruding tubes 25. The condensation tube 24 is connected to the connecting tube 216 through the multiple protruding tubes 25. The bottom end of the condensation tube 24 is fixedly connected to the top of the collection frame 23. The outer wall of the condensation tube 24 is provided with a cooling tube 26. The top end of the cooling tube 26 extends out of the condensation tank 11 and is fixedly connected to the collection pipe 18. The bottom end of the cooling tube 26 is fixedly connected to the bottom end of the delivery pipe 20. The cooling pump 15 and the cooler 14 are both fixedly installed on the top of the condensation tank 11, one end of the collecting frame 23 is fixedly connected to the liquid outlet pipe 13, and the other end of the collecting frame 23 is fixedly connected to the transfer pipe 19, the top side of the condensation tank 11 is fixedly connected to the air inlet pipe 12, one end of the transfer pipe 19 is fixedly connected to the bottom of the dispersion plate 311, one end of the cooler 14 is fixedly connected to the recovery pump 16, and the other end of the recovery pump 16 is fixedly connected to the return pipe 17, and the recovery pump 16 is connected to the collecting pipe 18 through the return pipe 17.

[0020] In this embodiment, when the device is used to treat the n-butyl acrylate vapor produced in the distillation and purification stage of producing n-butyl acrylate, the n-butyl acrylate vapor is first sent to the adsorption recovery component 21 through the air inlet pipe 12, and the controller 2 controls to start the adsorption recovery unit. The n-butyl acrylate vapor enters the adsorption shell 212 through the air inlet pipe 12, and the metal organic framework adsorption particles 214 use the high specific surface area and adjustable pore structure of MOFs materials (metal organic framework materials) to specifically adsorb n-butyl acrylate molecules. The pore size of the MOFs material matches the size of the n-butyl acrylate molecules, which can achieve synergistic effects of physical adsorption and chemical adsorption. Compared with the incomplete desorption and chemical adsorption that may occur in traditional activated carbon adsorption, the adsorption recovery unit 212 is activated. To address issues such as activated carbon loss, the chemical stability of MOFs and the solvent-free swelling properties of the membrane material avoid adsorbent leakage and the generation of organic waste liquid, reducing the risk of secondary pollution. Furthermore, in conjunction with a pulse backflushing device 215 (backflushing pressure 0.3-0.5 MPa, interval 30-60 min), the adsorption effect of n-butyl acrylate molecules in steam can be effectively improved. The combination of metal-organic framework adsorption particles 214 (adsorption capacity 2-3 times higher than activated carbon) and the pulse backflushing device 215 enables specific adsorption of n-butyl acrylate molecules. After adsorption saturation, the controller 2 controls the heating device 213 to raise the temperature to 80-100°C (variable temperature regeneration), thereby releasing n-butyl acrylate. The controller 2 controls to open the condensation control unit, and the released n-butyl acrylate waste gas enters the multiple condenser tubes 24 through the connecting pipe 216 and the multiple convex pipes 25. The cooling pump 15 transports the coolant in the cooler 14 to the multiple cooling tubes 26 through the delivery pipe 20. The coolant flows from bottom to top in the cooling tubes 26 outside the condenser tubes 24, thereby cooling the waste gas. The spiral coil structure of the condenser tube 24 increases the flow path length of the waste gas in the condenser tube 24, increases the heat exchange area between the waste gas and the coolant, and significantly improves the condensation effect. The coolant flows into the collecting tube 18, and the recovery pump 16 transports the coolant in the collecting tube 18 back to the cooler 14 through the reflux pipe 17 for recycling. The n-butyl acrylate in the waste gas is condensed into liquid through the condensation control unit, and is collected in the bottom collection frame 23, and finally discharged outward through the liquid outlet pipe 13, thereby realizing the recovery of liquid n-butyl acrylate.

[0021] Example 2: Please refer to Figure 1-Figure 7, this design proposes an implementation method, a condensation recovery water washing system for n-butyl acrylate, the water washing device 3 includes a water washing tank 31, a liquid storage tank 32, an air outlet pipe 33, a drain pipe 34, a diverter plate 37 and a vertical pipe 39, the vertical pipe 39 is fixedly installed inside the water washing tank 31, the outer edge of the vertical pipe 39 is fixedly connected to a spiral water washing pipe 310, and the interior of the vertical pipe 39 is fixedly connected to a spiral pipe 36, the top of the spiral water washing pipe 310 is fixedly connected to the air outlet pipe 33, and the bottom of the spiral water washing pipe 310 is fixedly connected to the drain pipe 34, the outer edge of the spiral pipe 36 is spirally arranged with a plurality of nozzles 315, and one end of the nozzle 315 extends to the spiral water washing pipe 31 0, the top of the diverter plate 37 is fixedly connected to the bottom of the spiral water washing pipe 310, and the interior of the diverter plate 37 is filled with a hollow fiber membrane 314. The liquid storage tank 32 is fixedly installed on the top of the water washing tank 31, one end of the liquid storage tank 32 is fixedly connected to the water washing pump 35, and the other end of the water washing pump 35 is fixedly connected to the top of the spiral tube 36. The motor 38 is fixedly installed on the bottom wall of the water washing tank 31, and the dispersion plate 311 is fixed to the bottom of the diverter plate 37. A movable plate 312 is provided between the diverter plate 37 and the dispersion plate 311. The top output end of the motor 38 is fixedly connected to the bottom of the movable plate 312, and a plurality of blades 313 are fixed in an annular array on the top of the movable plate 312.

[0022] In this embodiment, the controller 2 controls the opening of the dispersion unit, and the waste gas containing a small amount of n-butyl acrylate enters the dispersion plate 311 through the transfer tube 19. The waste gas is dispersed into a fine gas flow under the action of the dispersion plate 311 (the dispersion plate 311 is a porous structure containing a metal perforated plate corrugated filler inside, and the waste gas forms a uniformly distributed fine flow when passing through the filler). At the same time, the motor 38 drives the movable plate 312 and the multiple blades 313 to rotate, quickly breaking up the polymer particles in the fine gas flow discharged from the dispersion plate 311. The fine gas flow continues to enter the diverter plate 37 upward, and passes through the hollow fiber membrane 314 to form a thin layer flow on the membrane pore surface, and can simultaneously remove trace polymers in the waste gas. Impurities; the controller 2 controls to open the spiral water washing unit. After the laminar flow enters from the bottom end of the spiral water washing pipe 310, the washing liquid flows into the spiral pipe 36 under the action of the water washing pump 35, and is sprayed in the spiral water washing pipe 310 under the action of multiple nozzles 315, so as to achieve uniform dispersion of micron-level droplets, so that water and exhaust gas are fully in contact, thereby washing the spirally rising laminar flow gas, removing residual n-butyl acrylate and other pollutants in the exhaust gas, and the washed water falls into the liquid collection tank to form wastewater. Through the efficient mixing of micron-level droplets and exhaust gas, it is particularly suitable for the capture of n-butyl acrylate in low-concentration exhaust gas. The wastewater is discharged through the drain pipe 34 for treatment, and finally the gas is discharged outward through the outlet pipe 33.

[0023] Example 3: Please refer to Figure 1-Figure 7, this design proposes an implementation method, a water washing process of a condensation recovery and water washing system for n-butyl acrylate, the condensation recovery device 1 includes an adsorption recovery unit, a condensation control module and a circulation control unit, and the water washing device 3 includes a dispersion unit and a spiral water washing unit: the adsorption recovery unit uses metal organic framework adsorption particles 214 and a pulse backflush device 215 to achieve specific adsorption of n-butyl acrylate molecules, and after adsorption saturation, it is heated by a heating device 213 to release n-butyl acrylate; the condensation control unit uses a cooler 14, a cooling pump 15 and a plurality of condensing pipes 24 to achieve condensation recovery of the released n-butyl acrylate; the circulation control unit uses a recovery pump 16 and a reflux pipe 17 to achieve recovery and recycling of the coolant; the dispersion unit drives a plurality of blades 313 to rotate through a motor 38, and quickly breaks up the polymerized particles in the diverted gas discharged from the dispersion plate 311; the spiral water washing unit uses a plurality of spiral nozzles 315 to achieve uniform dispersion of micron-level droplets, and achieves water washing of the diverted gas spirally rising in the spiral water washing pipe 310; A water washing process for a condensation recovery water washing system for n-butyl acrylate comprises the following steps: S1. First, n-butyl acrylate vapor produced in the distillation and purification stage of producing n-butyl acrylate is fed into the adsorption recovery component 21 through the air inlet pipe 12. The controller 2 controls the activation of the adsorption recovery unit, and the metal organic framework adsorption particles 214 and the pulse backflush device 215 are used to achieve specific adsorption of n-butyl acrylate molecules. After adsorption saturation, the temperature is increased by the heating device 213 to release n-butyl acrylate. S2. The controller 2 controls the condensation control unit to turn on. The released n-butyl acrylate waste gas enters the multiple condenser tubes 24 through the connecting pipe 216. The cooling pump 15 delivers the coolant to the multiple cooling tubes 26 through the delivery pipe 20. The coolant flows from bottom to top outside the condenser tubes 24 to cool the waste gas. The coolant returns to the cooler 14 through the collection pipe 18 and the reflux pipe 17 for recycling, so that the n-butyl acrylate in the waste gas is condensed into liquid, which is then collected in the collection frame 23. S3. Controller 2 controls the start of the dispersion unit. The exhaust gas enters the dispersion plate 311 through the transfer tube 19. The exhaust gas is dispersed into a fine gas flow under the action of the porous dispersion plate 311. The fine gas flow passes through the hollow fiber membrane 314, forming a thin laminar flow on the membrane pore surface. S4, controller 2 controls to start the spiral water washing unit. After the laminar flow enters from the bottom end of the spiral water washing pipe 310, the washing liquid flows into the spiral pipe 36 under the action of the water washing pump 35, and is then sprayed into the spiral water washing pipe 310 under the action of multiple nozzles 315, thereby washing the spirally rising laminar flow gas with water to remove residual n-butyl acrylate in the gas. The washing liquid is discharged through the drain pipe 34 for treatment, and finally the gas is discharged to the outside through the exhaust pipe 33.

[0024] In the present invention, when the device is used to process the n-butyl acrylate vapor produced in the distillation and purification stage of producing n-butyl acrylate, the n-butyl acrylate vapor is first sent to the adsorption recovery component 21 through the air inlet pipe 12, and the controller 2 controls to start the adsorption recovery unit. The n-butyl acrylate vapor enters the adsorption shell 212 through the air inlet pipe 12, and the metal organic framework adsorption particles 214 use the high specific surface area and adjustable pore structure of the MOFs material to specifically adsorb the n-butyl acrylate molecules. The pore size of the MOFs material matches the size of the n-butyl acrylate molecules, which can achieve the synergistic effect of physical adsorption and chemical adsorption. At the same time, in conjunction with the pulse backflush device 215, the adsorption effect of the n-butyl acrylate molecules in the vapor can be effectively improved. By combining the metal organic framework adsorption particles 214 and the pulse backflush device 215, the n-butyl acrylate molecules are specifically adsorbed. After adsorption saturation, the controller 2 controls the heating device 213 to heat up to 80-100°C, thereby releasing the n-butyl acrylate. The controller 2 controls to open the condensation control unit, and the released n-butyl acrylate waste gas enters the multiple condenser tubes 24 through the connecting pipe 216 and the multiple convex pipes 25. The cooling pump 15 transports the coolant in the cooler 14 to the multiple cooling tubes 26 through the delivery pipe 20. The coolant flows from bottom to top in the cooling tubes 26 outside the condenser tubes 24, thereby cooling the waste gas. The spiral coil structure of the condenser tube 24 increases the flow path length of the waste gas in the condenser tube 24, increases the heat exchange area between the waste gas and the coolant, and significantly improves the condensation effect. The coolant flows into the collection pipe 18, and the recovery pump 16 transports the coolant in the collection pipe 18 back to the cooler 14 through the reflux pipe 17 for recycling. The n-butyl acrylate in the waste gas is condensed into liquid by the condensation control unit, and is collected in the bottom collection frame 23. Finally, it is discharged outward through the liquid outlet pipe 13, thereby realizing the recovery of the liquid n-butyl acrylate. Controller 2 controls the opening of the dispersion unit, and the waste gas containing a small amount of n-butyl acrylate enters the dispersion plate 311 through the transfer tube 19. The waste gas is dispersed into a fine gas flow under the action of the dispersion plate 311. At the same time, the motor 38 drives the movable plate 312 and multiple blades 313 to rotate, quickly breaking up the polymer particles in the fine gas flow discharged from the dispersion plate 311. The fine gas flow continues upward and enters the diverter plate 37. Through the hollow fiber membrane 314, the fine gas flow forms a thin laminar flow on the membrane pore surface, and simultaneously removes trace polymer impurities in the waste gas. Controller 2 controls the opening of the spiral water washing unit. After the laminar flow enters from the bottom end of the spiral water washing pipe 310, the washing liquid flows into the spiral pipe 36 under the action of the water washing pump 35, and is then sprayed in the spiral water washing pipe 310 under the action of multiple nozzles 315, so as to achieve uniform dispersion of micron-level droplets, so that water and exhaust gas are fully in contact, thereby washing the spirally rising laminar flow gas, removing residual n-butyl acrylate and other pollutants in the exhaust gas, and the washed water falls into the liquid collection tank to form wastewater. Through the efficient mixing of micron-level droplets and exhaust gas, it is particularly suitable for capturing n-butyl acrylate in low-concentration exhaust gas. The wastewater is discharged through the drain pipe 34 for treatment, and finally the gas is discharged to the outside through the outlet pipe 33.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A condensation recovery and water washing system for n-butyl acrylate, comprising a condensation recovery device (1), a controller (2), a water washing device (3) and a support frame (4), wherein the condensation recovery device (1) comprises a condensation tank (11), a cooler (14), a cooling pump (15) and a delivery pipe (20), and is characterized in that: An adsorption recovery assembly (21) is fixedly installed inside the top of the condensation tank (11), and a plurality of condensation shells (22) are fixedly installed in a ring array inside the bottom of the condensation tank (11). The adsorption recovery assembly (21) includes a fixed shell (211), an adsorption shell (212) and a connecting pipe (216). The adsorption shell (212) is fixed inside the fixed shell (211). The outer edge of the adsorption shell (212) is fixedly connected to a heating device (213), and the bottom of the adsorption shell (212) is fixedly installed with a pulse backflush (215). The interior of the adsorption shell (212) is filled with metal organic framework adsorption particles (214). The condensation shell (22) and the adsorption shell (212) are fixedly connected through a connecting pipe (216). The water washing device (3) includes a water washing tank (31), a liquid storage tank ( 32), an air outlet pipe (33), a liquid discharge pipe (34), a diverter plate (37) and a vertical pipe (39), the vertical pipe (39) is fixedly installed inside the water washing tank (31), the outer edge of the vertical pipe (39) is fixedly connected to a spiral water washing pipe (310), and the interior of the vertical pipe (39) is fixedly connected to a spiral pipe (36), the top end of the spiral water washing pipe (310) is fixedly connected to the air outlet pipe (33), and the bottom end of the spiral water washing pipe (310) is fixedly connected to the liquid discharge pipe (34), the outer edge of the spiral pipe (36) is fixedly arranged with a plurality of nozzles (315), and one end of the nozzle (315) extends to the interior of the spiral water washing pipe (310), the top of the diverter plate (37) is fixedly connected to the bottom of the spiral water washing pipe (310), and the interior of the diverter plate (37) is filled with a hollow fiber membrane (314).

2. The n-butyl acrylate condensation recovery and water washing system according to claim 1, characterized in that: The liquid storage tank (32) is fixedly mounted on the top of the water washing tank (31), one end of the liquid storage tank (32) is fixedly connected to the water washing pump (35), and the other end of the water washing pump (35) is fixedly connected to the top of the spiral tube (36).

3. The n-butyl acrylate condensation recovery and water washing system according to claim 1, characterized in that: A motor (38) is fixedly mounted on the bottom wall of the water washing tank (31), a dispersion plate (311) is fixed to the bottom of the diverter plate (37), a movable plate (312) is provided between the diverter plate (37) and the dispersion plate (311), a top output end of the motor (38) is fixedly connected to the bottom of the movable plate (312), and a plurality of blades (313) are fixed in an annular array on the top of the movable plate (312).

4. The n-butyl acrylate condensation recovery and water washing system according to claim 1, characterized in that: A collecting pipe (18) is fixedly installed on the outer wall of the condensation tank (11), and both ends of the cooling pump (15) are respectively connected to the cooler (14) and the delivery pipe (20), and multiple condensation shells (22) are each provided with a condensation pipe (24). The bottom wall of the condensation tank (11) is fixedly connected to a collecting frame (23), and the top of the condensation pipe (24) is evenly fixedly connected to multiple convex pipes (25), and the condensation pipe (24) is connected to the connecting pipe (216) through the multiple convex pipes (25).

5. The n-butyl acrylate condensation recovery and water washing system according to claim 4, characterized in that: The bottom end of the condenser tube (24) is fixedly connected to the top of the collecting frame (23), the outer wall of the condenser tube (24) is provided with a cooling tube (26), the top end of the cooling tube (26) extends out of the condenser tank (11) and is fixedly connected to the collecting tube (18), and the bottom end of the cooling tube (26) is fixedly connected to the bottom end of the delivery tube (20).

6. The n-butyl acrylate condensation recovery and water washing system according to claim 4, characterized in that: The cooling pump (15) and the cooler (14) are both fixedly mounted on the top of the condensation tank (11); one end of the collection frame (23) is fixedly connected to the liquid outlet pipe (13); and the other end of the collection frame (23) is fixedly connected to the transfer pipe (19); one side of the top end of the condensation tank (11) is fixedly connected to the air inlet pipe (12); and one end of the transfer pipe (19) is fixedly connected to the bottom of the dispersion plate (311).

7. The n-butyl acrylate condensation recovery and water washing system according to claim 6, characterized in that: One end of the cooler (14) is fixedly connected to a recovery pump (16), and the other end of the recovery pump (16) is fixedly connected to a return pipe (17), and the recovery pump (16) is connected to the collection pipe (18) through the return pipe (17).

8. The n-butyl acrylate condensation recovery and water washing system according to claim 1, characterized in that: The condensation recovery device (1) includes an adsorption recovery unit, a condensation control module and a circulation control unit, and the water washing device (3) includes a dispersion unit and a spiral water washing unit: The adsorption recovery unit uses metal organic framework adsorption particles (214) and a pulse backflushing device (215) to achieve specific adsorption of n-butyl acrylate molecules. After adsorption saturation, the temperature is increased by a heating device (213) to release n-butyl acrylate. The condensation control unit condenses and recovers the released n-butyl acrylate through a cooler (14), a cooling pump (15) and a plurality of condensation pipes (24); The circulation control unit realizes the recovery and recycling of the coolant through the recovery pump (16) and the return pipe (17); The dispersion unit drives the plurality of blades (313) to rotate via a motor (38), thereby rapidly breaking up aggregated particles in the diverted gas discharged from the dispersion plate (311); The spiral water washing unit achieves uniform dispersion of micron-level droplets through a plurality of spiral nozzles (315), thereby washing the divided gas spirally ascending in the spiral water washing pipe (310).

9. A water washing process for a condensation recovery and water washing system for n-butyl acrylate, applicable to the condensation recovery and water washing system for n-butyl acrylate according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. First, n-butyl acrylate vapor produced in the distillation and purification stage of producing n-butyl acrylate is fed into the adsorption recovery component (21) through the air inlet pipe (12). The controller (2) controls the start of the adsorption recovery unit to achieve specific adsorption of n-butyl acrylate molecules through the metal organic framework adsorption particles (214) and the pulse backflushing device (215). After adsorption saturation, the temperature is increased by the heating device (213) to release n-butyl acrylate. S2, the controller (2) controls the condensation control unit to be turned on, and the released n-butyl acrylate waste gas enters the multiple condensation tubes (24) through the connecting pipe (216), and the cooling pump (15) transports the coolant to the multiple cooling tubes (26) through the delivery pipe (20). The coolant flows from bottom to top outside the condensation tube (24) to cool the waste gas. The coolant returns to the cooler (14) through the collection pipe (18) and the return pipe (17) for recycling, so that the n-butyl acrylate in the waste gas is condensed into liquid, and then collected in the collection frame (23); S3, the controller (2) controls the dispersion unit to be turned on, and the exhaust gas enters the dispersion plate (311) through the transfer tube (19). The exhaust gas is dispersed into a fine gas flow under the action of the porous dispersion plate (311), and the fine gas flow forms a thin laminar flow on the surface of the membrane pores through the hollow fiber membrane (314); S4. The controller (2) controls the opening of the spiral water washing unit. After the laminar flow enters from the bottom end of the spiral water washing pipe (310), the washing liquid flows into the spiral pipe (36) under the action of the water washing pump (35), and is then sprayed into the spiral water washing pipe (310) under the action of multiple nozzles (315), thereby washing the spirally rising laminar flow gas and removing the residual n-butyl acrylate in the gas. The washing liquid is discharged through the drain pipe (34) for treatment, and finally the gas is discharged to the outside through the exhaust pipe (33).

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