Resin recovery high-concentration solvent treatment device

Abstract

The utility model discloses a high-concentration solvent treatment device for resin recovery, which comprises a distillation recovery component, a solvent recovery component and a solvent recovery component, the distillation recovery component comprises a distillation tower, and the outer side of the distillation tower is respectively provided with a condensing system for cooling steam and a recycling system for recycling the liquid part at the bottom of the tower into the tower; and the distillation mechanism is mounted in the distillation tower in the distillation recovery assembly and is used for distilling and recovering the high-concentration solvent. The bubble cap mechanism is composed of the connecting column, the connecting plate and the barrel cover, the height between the barrel cover and the connecting plate is adjusted through the screw rod and the nut, so that the gas-liquid contact area is adjusted, in the distillation process, a high-concentration solvent is evaporated on the tower tray, the bubble cap mechanism enables steam to be in full contact with liquid, and the mass transfer and heat transfer efficiency is improved. According to the device, the distillation efficiency is improved, the distillation time is shortened, the energy consumption is reduced, the gas-liquid contact is enhanced, the mass transfer efficiency and the heat transfer efficiency are improved, and the solvent is recycled more sufficiently.

Description

TECHNICAL FIELD

[0001] The utility model relates to solvent treatment equipment technical field especially relates to a resin recovery high concentration solvent treatment device. BACKGROUND

[0002] In the high concentration solvent recovery process, the distillation column is one of the key equipment, it is used for purifying and recycling high concentration solvent to obtain higher purity product, in the prior art, multistage distillation is a commonly used method, it carries out the purification to solvent through silkworm chrysalis multistage distillation, in this method, usually adopt the cutting oblique L-shaped tray structure, make the steam flow between multistage tray, thereby realizing the purification and recovery of solvent.

[0003] Although this multistage distillation mode can realize the recovery of solvent to some extent, there are some technical deficiencies, especially, the cutting oblique L-shaped tray structure that traditional multistage adopts shows lower distillation efficiency in the distillation process, this is because the design of L-shaped tray limits the effective contact between liquid and steam, causes the mass transfer and heat transfer efficiency to be not high, in addition, this structure can increase the energy consumption and maintenance cost of system, limits its economic benefits in the industrial scale application. SUMMARY

[0004] One purpose of the utility model is to propose a resin recovery high concentration solvent treatment device, the utility model solves the problem that the cutting oblique L-shaped tray structure that traditional multistage adopts shows lower distillation efficiency in the distillation process in the above background, this is because the design of L-shaped tray limits the effective contact between liquid and steam, causes the mass transfer and heat transfer efficiency to be not high, in addition, this structure can increase the energy consumption and maintenance cost of system, limits its economic benefits in the industrial scale application.

[0005] According to the resin recovery high concentration solvent treatment device of the utility model embodiment, including:

[0006] The distillation recovery assembly includes a distillation column, and the outer side of the distillation column is respectively provided with a condensation system for cooling steam and a recirculation system for recirculating the liquid part at the bottom of the column back into the column.

[0007] The distillation mechanism is installed in the interior of the distillation column of the distillation recovery assembly and is used for distillation and recovery of high-concentration solvent. The distillation mechanism includes trays, each of which is provided with a plurality of holes, a limiting plate is symmetrically fixed to one side of the top of the tray, a bubble cap mechanism for enhancing gas-liquid contact is installed at the top of the hole, a flow guide box is fixed to one end of the tray, a flow guide groove is formed in the interior of the flow guide box, and the flow guide boxes are alternately arranged. A steam connection pipe is fixed between the two trays corresponding to the distillation column in the distillation recovery assembly.

[0008] A screening assembly is installed on the upper end of the inside of the distillation column in the distillation recovery assembly, and is used to realize the separation of liquid and solid.

[0009] Preferably, the upper end of the inside of the distillation column is fixedly provided with a feed preheater and a top condenser, respectively. The lower end of the inside of the distillation column is fixedly provided with a bottom reboiler, the top of the feed preheater is fixedly provided with a feed pump, and the end of the inside of the distillation column close to the bottom reboiler is fixedly provided with a macroporous resin adsorbent and a microporous resin adsorbent, respectively. The bottom of the distillation column is fixedly provided with a conveying pipe, and one end of the conveying pipe is fixedly provided with a separator.

[0010] Preferably, the pipeline connected with the feed pump penetrates the inside of the distillation column.

[0011] Preferably, the bubble cap mechanism comprises a connecting column, a plurality of connecting columns are provided corresponding to the holes, the top of the connecting column is fixedly provided with a connecting plate, and a cylinder cover is installed on the top of the connecting column. The height between the cylinder cover and the connecting plate is adjusted by a screw and a nut.

[0012] Preferably, the condensing system comprises a condenser and a ring-shaped condensing liquid ring. The condenser and the ring-shaped condensing liquid ring are fixedly arranged on the outside of the distillation column, a plurality of ring-shaped condensing liquid rings are arranged, the condenser and the ring-shaped condensing liquid ring are connected, and a control system is fixedly arranged on the outside of the condenser.

[0013] Preferably, the control system is composed of a temperature controller, a pressure controller and a flow controller.

[0014] Preferably, the recirculation system comprises a circulating pipe and a pump body. The circulating pipe is connected to the top end and the bottom end of the distillation column, respectively, and the pump body is fixedly arranged on the outside of the circulating pipe.

[0015] Preferably, the screening assembly comprises a sieve plate. The sieve plate is fixedly arranged on the top of the inside of the distillation column close to the tray, the bottom of the sieve plate is fixedly provided with a guide cylinder, and a slag discharge pipe is fixedly arranged on the outside of the distillation column close to the inclined end of the sieve plate.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model discloses a distillation mechanism and bubble cap mechanism are set up, effectively improve the distillation efficiency, solved the traditional cutting oblique formula L shape tower board structure in the distillation process mass transfer and heat transfer efficiency is not high's problem, when treating high concentration solvent, utilize the tower tray in the distillation mechanism and set up several, every tower tray inside is provided with hole, and the top one side symmetry fixed setting has the limiting plate, makes liquid evenly distribute on the tower tray, and every hole top all installs bubble cap mechanism, and bubble cap mechanism is by connecting column, connecting plate and cylinder cover constitute, through the height between screw rod and nut adjustment cylinder cover and connecting plate, thereby realize the adjustment of gas-liquid contact area, in the distillation process, high concentration solvent evaporates on the tower tray, and bubble cap mechanism makes steam fully contact with liquid, improves mass transfer and heat transfer efficiency, therefore, the device improves the distillation efficiency, reduces the distillation time, reduces the energy consumption still strengthens the gas-liquid contact, improves mass transfer and heat transfer efficiency, makes solvent recovery more fully.

[0018] The utility model discloses a screening subassembly, condensing system and recirculation system are set up, effectively solved traditional distillation process liquid and solid separation not thoroughly, condensing effect is not good and the problem of low solvent recovery rate, when using, the screening subassembly in setting fixed in the distillation tower inside the top near tower tray, be used for realizing the preliminary separation of liquid and solid, and the condensing system includes condenser and ring type condensing liquid ring, and the condenser condenses into liquid, and the ring type condensing liquid ring ensures that the condensate is evenly distributed, and the recirculation system passes through the circulation pipe and pump body and recycles the tower bottom liquid part back to the tower, improves solvent recovery rate, therefore, the screening subassembly that sets up realizes the effective separation of liquid and solid, improves product quality, and the condensing system improves the condensing effect, and ensures the full recovery of solvent, and the recirculation system reduces the solvent discharge, and improves solvent recovery rate. ACCURACY

[0019] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, and do not constitute a limitation of the present application. In the drawings:

[0020] Figure 1 It is a three-dimensional structure schematic diagram of one side of the resin recovery high concentration solvent treatment device provided by the utility model;

[0021] Figure 2 It is an internal structure schematic diagram of the resin recovery high concentration solvent treatment device provided by the utility model;

[0022] Figure 3 It is a tower tray structure schematic diagram of the resin recovery high concentration solvent treatment device provided by the utility model;

[0023] Figure 4The utility model provides a bubble cap structure schematic diagram of resin recovery high concentration solvent treatment device.

[0024] In the figure: 1, distillation recovery component; 101, distillation tower; 102, feed preheater; 103, feed pump; 104, overhead condenser; 105, bottom reboiler; 106, macroporous resin adsorbent; 107, small hole resin adsorbent; 108, conveying pipe; 109, separator; 2, distillation mechanism; 201, tray; 202, limit board; 203, hole; 204, connecting column; 205, connecting plate; 206, cylinder cover; 207, slot; 208, screw; 209, nut; 210, flow guide box; 211, flow guide groove; 212, steam connecting pipe; 3, condensing system; 301, condenser; 302, ring type condensing liquid ring; 303, control system; 4, recirculation system; 401, circulating pipe; 402, pump body; 5, screening component; 501, sieve plate; 502, guide cylinder; 503, slag discharge pipe. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so it only shows the structure related to the utility model.

[0026] Reference Figures 1-4 A resin recovery high concentration solvent treatment device, comprising:

[0027] The distillation recovery assembly 1 comprises a distillation column 101, the outer side of the distillation column 101 is respectively provided with a condensing system 3 for cooling steam and a recirculation system 4 for recirculating the liquid part at the bottom of the column back into the column, the upper end inside the distillation column 101 is respectively fixedly provided with a feed preheater 102 and a column top condenser 301. The lower end inside the distillation column 101 is fixedly provided with a column bottom reboiler 105, the top of the feed preheater 102 is fixedly provided with a feed pump 103, one end of the distillation column 101 inside the column bottom reboiler 105 is respectively fixedly provided with a macroporous resin adsorbent 106 and a microporous resin adsorbent 107, the bottom of the distillation column 101 is fixedly provided with a conveying pipe 108, one end of the conveying pipe 108 is fixedly provided with a separator 109, the feed pump 103 is used to send the high-concentration solvent containing resin to be treated into the feed preheater 102 for preheating, the preheated solution enters the distillation column 101, in the distillation column, the solution is distilled through the bubble cap mechanism on the column tray, the steam rises to the column top condenser 301, is condensed into liquid and then flows into the condensing system 3 for cooling, the liquid part at the bottom of the column is sent back into the distillation column through the recirculation system 4 by the circulating pipe 401 and the pump body 402, at the same time, the macroporous resin adsorbent 106 and the microporous resin adsorbent 107 adsorb the resin in the solution, finally, the pure solvent is recovered and the resin is discharged through the conveying pipe 108 after separation by the separator 109, the whole process realizes effective recovery of the high-concentration solvent and separation of the resin;

[0028] The distillation mechanism 2 is installed in the inside of the distillation tower 101 in the distillation recovery assembly 1, and is used for distillation recovery of high-concentration solvent, wherein the distillation mechanism 2 comprises a plurality of trays 201, the inside of each tray 201 is provided with a hole 203, a limiting plate 202 is symmetrically and fixedly arranged at the top of the tray 201, a bubble cap mechanism for enhancing gas-liquid contact is arranged at the top of the hole 203, a flow guide box 210 is fixedly arranged at one end of the tray 201, a flow guide groove 211 is arranged in the inside of the flow guide box 210, the flow guide boxes 210 are alternately arranged, a steam connecting pipe 212 is fixedly arranged between two trays 201 corresponding to the distillation tower 101 in the distillation recovery assembly 1, the bubble cap mechanism comprises a connecting column 204, a plurality of connecting columns 204 are arranged corresponding to the hole 203, a connecting plate 205 is fixedly arranged at the top of the connecting column 204, a cylinder cover 206 is arranged at the top of the connecting column 204, and the height between the cylinder cover 206 and the connecting plate 205 is adjusted by a screw rod 208 and a nut 209. In the distillation recovery assembly 1, the distillation mechanism 2 is installed in the inside of the distillation tower 101, is composed of a plurality of trays 201, each tray 201 is provided with a hole 203 and a limiting plate 202, the bubble cap mechanism is arranged at the top of the hole 203 to enhance gas-liquid contact, the flow guide box 210 is fixed at one end of the tray 201, the flow guide groove 211 in the inside of the flow guide box 210 ensures uniform distribution of liquid, the flow guide boxes 210 are alternately arranged, the steam connecting pipe 212 can connect two adjacent trays 201, an effective distillation channel is formed, the bubble cap mechanism is composed of the connecting column 204, the connecting plate 205 and the cylinder cover 206, the distance between the cylinder cover 206 and the connecting plate 205 is adjusted by the screw rod 208 and the nut 209, so that the gas-liquid contact effect is optimized, in the operation process, the high-concentration solvent is evaporated on the tray 201, the steam is guided to the next tray by the steam connecting pipe 212 after passing through the bubble cap mechanism, and efficient distillation recovery is realized.

[0029] The screening assembly 5 is installed at the upper end of the inside of the distillation tower 101 in the distillation recovery assembly 1, and is used for realizing separation of liquid and solid. The screening assembly 5 comprises a screen plate 501, the screen plate 501 is fixedly arranged at the top of the inside of the distillation tower 101 close to the tray 201, a guide cylinder 502 is fixedly arranged at the bottom of the screen plate 501, a residue discharge pipe 503 is fixedly arranged at the position of the inclined end of the screen plate 501 on the outside of the distillation tower 101, when the mixed liquid passes through the screen plate 501, the liquid can drop to the lower tray 201 through the screen hole, and the solid resin is intercepted by the screen plate 501. Due to the inclined design of the screen plate 501, the solid resin slides to the fixed residue discharge pipe 503 along the guide cylinder 502 under the action of gravity, and is finally discharged from the distillation tower 101 through the residue discharge pipe 503, so that the effective separation of liquid and solid is realized.

[0030] In the embodiment 1, the pipe connected with the feed pump 103 penetrates into the inside of the distillation tower 101 for feeding the resin-containing high-concentration solvent into the tower, the condensing system 3 comprises a condenser 301 and a ring condensing circulating ring 302, the evaporated solvent vapor rises to the condenser 301, the condenser 301 condenses the vapor into liquid, and the liquid then flows into the ring condensing circulating ring 302, the condenser 301 and the ring condensing circulating ring 302 are fixedly arranged outside the distillation tower 101, the ring condensing circulating ring 302 is provided with a plurality of ring condensing circulating rings, the condenser 301 and the ring condensing circulating ring 302 are connected, the condenser 301 is fixedly arranged outside the condenser 301 and is provided with a control system 303 for adjusting the cooling effect of the condenser to ensure the stability and high efficiency of the condensing process.

[0031] In the embodiment 2, the control system 303 is composed of a temperature controller, a pressure controller and a flow controller, the temperature controller ensures that the temperature in the condenser 301 is appropriate, the pressure controller maintains the stable pressure of the system, and the flow controller adjusts the flow of the circulating liquid, the recirculating system 4 comprises a circulating pipe 401 and a pump body 402, the circulating pipe 401 is connected with the top end and the bottom end of the distillation tower 101 respectively, and the pump body 402 is fixedly arranged outside the circulating pipe 401 for driving the liquid at the bottom of the tower to be recirculated back into the tower.

[0032] Working principle: first, the feed pump 103 by pipeline containing resin high concentration solvent into the feed preheater 102 for preheating, preheating after the solution into the distillation column 101 inside, in the distillation column 101, the solution through the installation of multiple tower tray 201 distillation mechanism 2, each tower tray 201 inside opening has a hole 203, the top side of the symmetry fixed limit plate 202, the top of the hole 203 is equipped with bubble cap mechanism, to enhance the gas-liquid contact, improve the distillation efficiency, with the solution in the tower tray 201 evaporation, the generated steam through the bubble cap mechanism, by the steam connecting pipe 212 guided to the next layer tower tray, realize efficient distillation recovery, the guide groove 211 opened in the flow guide box 210 ensures the uniform distribution of liquid, while the alternately arranged flow guide box 210 makes the steam connecting pipe 212 can connect the two adjacent tower tray 201, form effective distillation channel, the steam rises to the tower top condenser 301, the condenser 301 condenses the steam into liquid, these liquids subsequently flow into the ring type condensing liquid ring 302, cooling, condensing system 3 includes condenser 301 and ring type condensing liquid ring 302, are fixedly arranged on the outside of the distillation column 101, the multiple settings of the ring type condensing liquid ring 302 ensure the uniform distribution and effective reflux of the condensed liquid, the control system 303 is composed of temperature controller, pressure controller and flow controller, located outside the condenser 301, responsible for monitoring and adjusting the temperature, pressure and flow in the condensation process, ensure the stability and efficiency of the condensation process, the liquid part at the bottom of the tower is sent back into the distillation column by the recirculation system 4, the circulating pipe 401 and the pump body 402, the circulating pipe 401 is connected to the top and bottom of the distillation column 101 respectively, the pump body 402 is fixed outside the circulating pipe 401, driving the tower bottom liquid recirculation back to the tower, improving the recovery efficiency of the solvent, at the same time, the screening assembly 5 is installed in the inner upper end of the distillation column 101, including sieve plate 501 and guide cylinder 502, for realizing the separation of liquid and solid, when the mixed liquid passes through the sieve plate 501, the liquid can drop through the sieve hole to the lower tower tray 201, while the solid resin is intercepted by the sieve plate 501 and slides along the guide cylinder 502 to the slag discharge pipe 503, and finally discharged from the distillation column 101, through the above process, the high concentration solvent can be effectively recovered, the resin and the solvent are separated, and the efficient operation of the whole device is realized.

[0033] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A resin recovery high concentration solvent treatment apparatus characterized by comprising: Include: The distillation recovery assembly (1) comprises a distillation column (101), and the outer side of the distillation column (101) is respectively provided with a condensing system (3) for cooling steam and a recycling system (4) for recycling the liquid part at the bottom of the column back into the column; The distillation mechanism (2) is installed in the distillation column (101) of the distillation recovery assembly (1), and is used for distillation recovery of high-concentration solvent, wherein the distillation mechanism (2) comprises a plurality of trays (201), the inside of the tray (201) is provided with a plurality of holes (203), the top side of the tray (201) is fixedly provided with a limiting plate (202), the top of the hole (203) is provided with a bubble cap mechanism for enhancing gas-liquid contact, one end of the tray (201) is fixedly provided with a flow guide box (210), the inside of the flow guide box (210) is provided with a flow guide groove (211), and a plurality of flow guide boxes (210) are alternately arranged; the distillation recovery assembly (1) is fixedly provided with a steam connecting pipe (212) between the two trays (201) corresponding to the distillation column (101); The screening assembly (5) is installed at the upper end of the inside of the distillation column (101) of the distillation recovery assembly (1), and is used for realizing separation of liquid and solid.

2. The resin recovery high concentration solvent treatment apparatus according to claim 1, characterized by The upper end of the inside of the distillation column (101) is fixedly provided with a feed preheater (102) and a column top condenser (301), the lower end of the inside of the distillation column (101) is fixedly provided with a column bottom reboiler (105), the top of the feed preheater (102) is fixedly provided with a feed pump (103), one end of the inside of the distillation column (101) close to the column bottom reboiler (105) is fixedly provided with a macroporous resin adsorbent (106) and a microporous resin adsorbent (107), and the bottom of the distillation column (101) is fixedly provided with a conveying pipe (108). One end of the conveying pipe (108) is fixedly provided with a separator (109).

3. The resin recovery high concentration solvent treatment apparatus according to claim 2, characterized by The pipeline connected with the feed pump (103) penetrates the inside of the distillation column (101).

4. The resin recovery high concentration solvent treatment apparatus according to claim 1, wherein The bubble cap mechanism comprises a connecting column (204), a plurality of connecting columns (204) are provided corresponding to the holes (203), the top of the connecting column (204) is fixedly provided with a connecting plate (205), the top of the connecting column (204) is provided with a cylinder cover (206), and the height between the cylinder cover (206) and the connecting plate (205) is adjusted by a screw (208) and a nut (209).

5. The resin recovery high concentration solvent treatment apparatus according to claim 1, wherein The condensing system (3) comprises a condenser (301) and a ring type condensing liquid ring (302), the condenser (301) and the ring type condensing liquid ring (302) are fixedly arranged on the outer side of the distillation column (101), a plurality of ring type condensing liquid rings (302) are arranged, the condenser (301) and the ring type condensing liquid ring (302) are connected, and the outer side of the condenser (301) is fixedly provided with a control system (303).

6. The resin recovery high concentration solvent treatment apparatus according to claim 5, wherein The control system (303) is composed of a temperature controller, a pressure controller and a flow controller.

7. The resin recovery high concentration solvent treatment apparatus according to claim 1, wherein The recirculation system (4) comprises a circulating pipe (401) and a pump body (402), the circulating pipe (401) is connected to the top end and the bottom end of the distillation tower (101) respectively, and the outer side of the circulating pipe (401) is fixedly provided with the pump body (402).

8. The resin recovery high concentration solvent treatment apparatus according to claim 1, wherein The screening assembly (5) comprises a sieve plate (501), the sieve plate (501) is fixedly arranged inside the distillation tower (101) and close to the top of the tray (201), the bottom of the sieve plate (501) is fixedly provided with a guide cylinder (502), and the outer side of the distillation tower (101) is fixedly provided with a slag discharge pipe (503) close to the inclined end of the sieve plate (501).

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