Membrane filtration ethanol recovery equipment

Abstract

The invention belongs to the technical field of ethanol recovery, in particular to membrane filtration ethanol recovery equipment, and provides the following scheme that the membrane filtration ethanol recovery equipment comprises a support, a heat exchange assembly and a membrane assembly, a raw material tank is mounted on the rear side of the support, the top of the raw material tank is communicated with a feeding assembly, the end of the feeding assembly is connected with the heat exchange assembly, and the membrane assembly is mounted on the support. One side of the heat exchange assembly communicates with an evaporator, an evaporation pipe is installed in the evaporator, a fan is installed on the rear side of the evaporator, and a drain valve is arranged at the bottom of the evaporator. In the using process, a water-containing ethanol solution enters the heat exchanger and the evaporator through the feeding assembly to be treated, effective vacuum filtration treatment is conducted through the membrane device, the treated product returns to the heat exchanger to conduct heat exchange with a normal-temperature raw material, and then the product enters the product cooler to be further cooled to 35 DEG C or below; and due to the arrangement of the heat exchanger, the temperature of the feed liquid is increased through heat exchange of the product, and energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ethanol recovery, in particular to membrane filtration ethanol recovery equipment. Background Art

[0002] In the chemical, pharmaceutical and biotechnology industries, ethanol is an important solvent and reaction medium. Its recovery and reuse is of great significance for energy conservation, emission reduction and cost reduction. At present, the ethanol recovery technologies widely used in the market mainly include distillation, adsorption and pervaporation membrane separation.

[0003] However, the ethanol recovery device in the prior art has the problem of high energy consumption and large energy consumption required for heating and cooling the solution.

[0004] For this purpose, membrane filtration ethanol recovery equipment is required. Summary of the invention

[0005] The membrane filtration ethanol recovery equipment proposed by the present invention solves the problem of high energy consumption required for heating and cooling the solution in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The membrane filtration ethanol recovery device comprises a control bracket, a heat exchange component and a membrane component, wherein a raw material tank is installed on the rear side of the bracket, a feed component is connected to the top of the raw material tank, and a heat exchange component is connected to the end of the feed component;

[0008] One side of the heat exchange component is connected to an evaporator, an evaporation tube is installed inside the evaporator, a fan is installed on the rear side of the evaporator, a drain valve is provided at the bottom of the evaporator, the top of the evaporator is connected to a delivery pipe, the end of the delivery pipe is connected to a membrane assembly, and the bottom of the membrane assembly is connected to a second feed pipe.

[0009] The end of the second feed pipe is connected to the heat exchange component, the rear side of the heat exchange component is connected to the third feed pipe, the end of the third feed pipe is connected to the product cooler, one side of the product cooler is connected to the product tank, the front end of the membrane component is connected to a vacuum pumping pipe, a condenser is installed on the end of the vacuum pumping pipe, one side of the condenser is connected to a vacuum machine, the side of the condenser is connected to a connecting pipe, the end of the connecting pipe is connected to a permeate tank, a positioning frame is provided at the bottom of the first membrane device, a plurality of cross bars are horizontally welded in the middle of the positioning frame, a clamping rod is provided through the outer side of the cross bar, torsion springs are connected to the two sides of the clamping rod, and adapters are inserted at both ends of the positioning frame.

[0010] The feeding assembly includes a connecting frame, a first motor is provided on the top of the feeding assembly, the output end of the first motor is rotatably connected to a transmission rod, one end of the transmission rod is rotatably connected to a connecting rod, the outer wall of the connecting rod is slidably connected to a positioning block, the bottom of the connecting rod is slidably connected to a swing slider, the side wall of the swing slider is screwed with a rotating plate, a raw material box is provided on the top of the connecting frame, a hopper is provided on one side of the raw material box, a quantitative groove is provided at the bottom of the hopper, a connecting rotating rod is provided at one end of the quantitative groove, one end of the connecting rotating rod is rotatably connected to a connecting plate, a lifting slider is slidably connected to the surface of the connecting plate, one end of the lifting slider is slidably connected to a limiting slide groove, one end of the connecting plate is rotatably connected to a connecting rod, and one end of the connecting rod is provided with a second motor.

[0011] Preferably, the heat exchange component comprises a feed pipe, the end of the feed pipe is connected to the heat exchanger, the end of the feed pipe is installed with a spiral tube, and the top end of the spiral tube is connected to the first feeding pipe.

[0012] Preferably, the spiral tube is arranged in a spiral shape, and the first feeding tube and the feed tube form a communicating structure through the spiral tube.

[0013] Preferably, the evaporation tube and the fan are arranged perpendicular to each other, and the evaporation tube is arranged in a spiral shape.

[0014] Preferably, the membrane assembly includes a first membrane device and a diaphragm fixedly installed inside the first membrane device, a membrane feed side is arranged on the left side of the diaphragm, a membrane permeation side is arranged on the right side of the diaphragm, the delivery pipe is connected to the top of the membrane feed side, the top of the membrane permeation side is connected to a conduit, the end of the conduit is connected to the second membrane device, and the side of the second membrane device is connected to the third membrane device.

[0015] Preferably, the permeate side of the membrane is evacuated through a condenser and a vacuum machine, and a vapor partial pressure difference of components on both sides of the membrane is formed by a vacuum evacuation plus condensation method.

[0016] Preferably, the third membrane device forms a communication structure with the heat exchanger through the second feeding pipe.

[0017] Preferably, the clamping rod forms a rotating structure with the cross bar through a torsion spring, and the clamping rod is symmetrically arranged with respect to the central axis of the first membrane device.

[0018] The present invention proposes a membrane filtration ethanol recovery device. Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. During the use of the present invention, the aqueous ethanol solution enters the heat exchanger and the evaporator through the feed assembly for treatment, and is effectively vacuum filtered through the membrane device. The treated product returns to the heat exchanger for heat exchange with the room temperature raw material, and then the product enters the product cooler for further cooling to below 35°C, and is sent to the product tank for processing. The setting of the heat exchanger increases the feed liquid temperature through product heat exchange, saving energy consumption.

[0020] 2. The present invention arranges a heat exchanger, and conveys the aqueous ethanol solution into the heat exchanger and the evaporator for processing through the feed assembly, and performs effective vacuum filtration processing through the membrane device. The treated product returns to the heat exchanger through the second feed pipe to exchange heat with the room temperature raw material conveyed through the spiral tube. The arrangement of the heat exchanger increases the feed liquid temperature through heat exchange, and also reduces the product temperature through heat exchange, which provides assistance for subsequent evaporation and cooling operations, and effectively saves energy consumption.

[0021] 3. The present invention sets an evaporator and designs a continuous residual liquid discharge system drain valve at the bottom of the evaporator. The residual liquid discharge flow rate at the bottom of the evaporator can be automatically adjusted according to the cleanliness, conductivity and color of the material, so that the material in the membrane feeder is clean and the service life of the membrane is extended. It is recommended that the discharged residual liquid be discharged to the material pretreatment area; a fan is set on the rear side to effectively improve the internal evaporation efficiency, effectively accelerate the evaporation process, and improve the processing efficiency.

[0022] 4. The present invention sets a membrane device, and adopts the method of vacuuming and condensing on the membrane permeation side to form a steam partial pressure difference between the components on the membrane feed side and the membrane permeation side. The permeate steam enters the condenser under the suction of the vacuum machine, and the condensed permeate is collected in the permeate tank through a connecting pipe, so as to effectively complete the separation and collection, and facilitate subsequent processing operations. When the first membrane device is installed and fixed, the clamping rod in the middle of the positioning frame can be pulled to rotate around the cross bar to open, and the torsion spring is used to buckle and tighten the device inward, so as to stably and quickly clamp and fix the equipment, which is conducive to the stable and parallel installation of multiple groups of membrane devices, and the adapters that can be plugged and installed on both sides ensure that the positioning frame and the bracket can be flexibly and effectively connected and assembled quickly to form an overall installation stable frame, thereby improving the integrity of the equipment installation.

[0023] 5. The present invention sets a transmission rod, and through the rotation of the transmission rod, drives the connecting rod to swing with the positioning block as the center of the circle. The connecting rod drives the rotating plate to rotate through the swinging slider, and the rotating plate drives the raw material box to rotate, and the ethanol solution is poured into the hopper, thereby realizing the automatic feeding operation of the ethanol solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the membrane filtration ethanol recovery equipment of the present invention.

[0025] Figure 2 It is a schematic diagram of the overall top view of the structure of the membrane filtration ethanol recovery equipment of the present invention.

[0026] Figure 3 It is a schematic diagram of the overall front view structure of the membrane filtration ethanol recovery equipment of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the feed assembly of the membrane filtration ethanol recovery equipment of the present invention.

[0028] Figure 5 This is a schematic diagram of the limiting slide structure of the membrane filtration ethanol recovery equipment of the present invention.

[0029] Figure 6 This is a schematic diagram of the cross-sectional structure of the heat exchanger of the membrane filtration ethanol recovery equipment of the present invention.

[0030] Figure 7 This is a schematic diagram of the cross-sectional structure of the evaporator of the membrane filtration ethanol recovery equipment of the present invention.

[0031] Figure 8 This is a schematic diagram of the cross-sectional structure of the membrane device of the membrane filtration ethanol recovery equipment of the present invention.

[0032] Fig. 9 This is a schematic diagram of the positioning frame structure of the membrane filtration ethanol recovery equipment of the present invention.

[0033] Fig.10 This is a schematic diagram of the installation structure of the clamp rod and torsion spring of the membrane filtration ethanol recovery equipment of the present invention.

[0034] In the figure: 1, bracket; 2, raw material tank; 3, feed assembly; 301, connection frame; 302, first motor; 303, transmission rod; 304, positioning block; 305, connection rod; 306, swing slider; 307, raw material box; 308, rotating plate; 309, quantitative slot; 310, second motor; 311, connecting rod; 312, connection plate; 313, lifting slider; 314, limit slide; 315, connecting rotating rod; 316, hopper; 4, feed pipe; 5, heat exchanger; 6, spiral pipe; 7, first feeding pipe; 8, steam vent; 9. evaporator; 10. fan; 11. drain valve; 12. delivery pipe; 13. first membrane device; 14. diaphragm; 15. membrane feed side; 16. membrane permeate side; 17. conduit; 18. second membrane device; 19. third membrane device; 20. second feed pipe; 21. third feed pipe; 22. product cooler; 23. product tank; 24. vacuum exhaust pipe; 25. condenser; 26. vacuum machine; 27. connecting pipe; 28. permeate tank; 29. ​​positioning frame; 30. cross bar; 31. clamping rod; 32. torsion spring; 33. adapter. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-10 The present invention provides a technical solution: a membrane filtration ethanol recovery device, comprising a bracket 1, a heat exchange component and a membrane component, a raw material tank 2 is installed on the rear side of the bracket 1, a feed component 3 is connected to the top of the raw material tank 2, and a heat exchange component is connected to the end of the feed component 3;

[0037] One side of the heat exchange component is connected to the evaporator 8, an evaporation tube 9 is installed inside the evaporator 8, a fan 10 is installed on the rear side of the evaporator 8, a drain valve 11 is provided at the bottom of the evaporator 8, the top of the evaporator 8 is connected to the delivery pipe 12, the end of the delivery pipe 12 is connected to the membrane assembly, and the bottom of the membrane assembly is connected to the second feed pipe 20.

[0038] Furthermore, the end of the second feed pipe 20 is connected to the heat exchange component, the rear side of the heat exchange component is connected to the third feed pipe 21, the end of the third feed pipe 21 is connected to the product cooler 22, one side of the product cooler 22 is connected to the product tank 23, the front end of the membrane component is connected to the vacuum pumping pipe 24, the end of the vacuum pumping pipe 24 is installed with a condenser 25, one side of the condenser 25 is connected to a vacuum machine 26, the side of the condenser 25 is connected to a connecting pipe 27, the end of the connecting pipe 27 is connected to a permeate tank 28, a positioning frame 29 is provided at the bottom of the first membrane device 13, a plurality of cross bars 30 are horizontally welded in the middle of the positioning frame 29, a clamping rod 31 is provided through the outer side of the cross bar 30, torsion springs 32 are connected to the two sides of the clamping rod 31, and adapter plates 33 are inserted at both ends of the positioning frame 29.

[0039] Furthermore, the feeding assembly includes a connection frame 301, a first motor 302 is arranged on the top of the feeding assembly 3, the output end of the first motor 302 is rotatably connected to a transmission rod 303, one end of the transmission rod 303 is rotatably connected to a connection rod 305, the outer wall of the connection rod 305 is slidably connected to a positioning block 304, the bottom of the connection rod 305 is slidably connected to a swing slider 306, the side wall of the swing slider 306 is screwed to a rotating plate 308, and a raw material box 307 is arranged on the top of the connection frame 301. A hopper 316 is provided on one side of the material box 307, and a quantitative groove 309 is provided at the bottom of the hopper 316. A connecting rotating rod 315 is provided at one end of the quantitative groove 309. One end of the connecting rotating rod 315 is rotatably connected to a connecting plate 312. A lifting slider 313 is slidably connected to the surface of the connecting plate 312. One end of the lifting slider 313 is slidably connected to a limiting sliding groove 314. One end of the connecting plate 312 is rotatably connected to a connecting rod 311. A second motor 310 is provided at one end of the connecting rod 311.

[0040] Furthermore, the heat exchange component includes a feed pipe 4, the end of which is connected to a heat exchanger 5, a spiral tube 6 is installed at the end of the feed pipe 4, and the top of the spiral tube 6 is connected to a first feeding pipe 7. The setting of the heat exchanger 5 increases the feed liquid temperature through heat exchange and also reduces the product temperature through heat exchange.

[0041] Furthermore, the spiral tube 6 is arranged in a spiral shape, and the first feeding tube 7 and the feed tube 4 form a connecting structure through the spiral tube 6, which increases the contact surface and effectively improves the heat exchange efficiency.

[0042] Furthermore, the evaporation tube 9 and the fan 10 are arranged perpendicular to each other, and the evaporation tube 9 is arranged in a spiral shape. The fan 10 can effectively improve the internal evaporation efficiency, effectively speed up the evaporation process, and improve the processing efficiency.

[0043] Furthermore, the membrane assembly includes a first membrane device 13 and a diaphragm 14 fixedly installed inside the first membrane device 13, a membrane feed side 15 is arranged on the left side of the diaphragm 14, a membrane permeation side 16 is arranged on the right side of the diaphragm 14, a delivery pipe 12 is connected to the top of the membrane feed side 15, a conduit 17 is connected to the top of the membrane permeation side 16, a second membrane device 18 is connected to the end of the conduit 17, and a third membrane device 19 is connected to the side of the second membrane device 18. The three groups are arranged to efficiently process and filter ethanol.

[0044] Furthermore, the membrane permeate side 16 is evacuated through the condenser 25 and the vacuum machine 26 , and a vapor partial pressure difference of the components on both sides of the membrane is formed by vacuuming and condensing. The permeate vapor enters the condenser 25 under the suction of the vacuum machine 26 .

[0045] Furthermore, the third membrane device 19 forms a communication structure with the heat exchanger 5 through the second feeding pipe 20 , and the processed product returns to the heat exchanger 5 through the second feeding pipe 20 to exchange heat with the room temperature raw material transported through the spiral tube 6 .

[0046] Furthermore, the clamping rod 31 forms a rotating structure with the cross bar 30 through the torsion spring 32, and the clamping rod 31 is symmetrically arranged about the central axis of the first membrane device 13, so as to stably and quickly clamp and fix the equipment, which is conducive to the stable parallel installation of multiple groups of membrane devices.

[0047] Working principle: First, the ethanol solution passes through the feeding component 3. At this time, the transmission rod 303 rotates to drive the connecting rod 305 to swing with the positioning block 304 as the center. The connecting rod 305 drives the rotating plate 308 to rotate through the swinging slider 306. The rotating plate 308 drives the raw material box 307 to rotate, and the ethanol solution is poured into the hopper 316, so as to realize the automatic feeding operation of the ethanol solution. Then, the water-containing ethanol solution is transported into the heat exchanger 5 and the evaporator 8 for treatment, and the membrane device is used for effective vacuum filtration treatment. The treated product returns to the heat exchanger 5 through the second feeding pipe 20 to exchange heat with the room temperature raw material transported by the spiral tube 6. The setting of the heat exchanger 5 increases the feed liquid temperature through heat exchange, and also reduces the product temperature through heat exchange, which provides assistance for subsequent evaporation and cooling operations and effectively saves energy consumption.

[0048] Next, a continuous residual liquid discharge system drain valve 11 is designed at the bottom of the evaporator 8. The residual liquid discharge flow rate at the bottom of the evaporator 8 can be automatically adjusted according to the cleanliness of the material: material conductivity and color, so that the material in the membrane feeder is clean and the service life of the membrane is extended. It is recommended that the discharged residual liquid be discharged to the material pretreatment area; a fan 10 is arranged on the rear side to effectively improve the internal evaporation efficiency, effectively accelerate the evaporation process, and improve the processing efficiency.

[0049] Finally, the membrane permeate side 16 is vacuumed and condensed to form a vapor partial pressure difference between the components on the membrane feed side 16 and the membrane permeate side 15. The permeate vapor enters the condenser 25 under the suction of the vacuum machine 26, and the condensed permeate is collected in the permeate tank 28 through the connecting pipe 27, thereby effectively completing the separation and collection, and facilitating subsequent processing operations. When the first membrane device 13 is installed and fixed, the clamping rod 31 in the middle of the positioning frame 29 can be pulled to rotate around the cross bar 30 to open, and the torsion spring 32 is used to buckle and tighten the device inward, so as to stably and quickly clamp and fix the equipment, which is conducive to the stable parallel installation of multiple groups of membrane devices, and the adapter plates 33 that can be plugged and installed on both sides ensure that the positioning frame 29 and the bracket 1 can be flexibly and effectively connected and assembled quickly to form an overall installation stable frame, thereby improving the integrity of the equipment installation.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A membrane filtration ethanol recovery device, comprising a support (1), a heat exchange component and a membrane component, characterized in that: A raw material tank (2) is installed on the rear side of the bracket (1), the top of the raw material tank (2) is connected to a feed assembly (3), and the end of the feed assembly (3) is connected to a heat exchange assembly; One side of the heat exchange component is connected to an evaporator (8), an evaporation tube (9) is installed inside the evaporator (8), a fan (10) is installed on the rear side of the evaporator (8), a drain valve (11) is provided at the bottom of the evaporator (8), the top of the evaporator (8) is connected to a delivery pipe (12), the end of the delivery pipe (12) is connected to a membrane component, and the bottom of the membrane component is connected to a second feed pipe (20).

2. The membrane filtration ethanol recovery equipment according to claim 1, characterized in that: The end of the second feed pipe (20) is connected to the heat exchange assembly, the rear side of the heat exchange assembly is connected to the third feed pipe (21), the end of the third feed pipe (21) is connected to the product cooler (22), one side of the product cooler (22) is connected to the product tank (23), the front end of the membrane assembly is connected to the vacuum exhaust pipe (24), the end of the vacuum exhaust pipe (24) is installed with a condenser (25), and one side of the condenser (25) is connected to a vacuum machine (26). The side of the condenser (25) is connected to a connecting pipe (27), the end of the connecting pipe (27) is connected to a permeate tank (28), a positioning frame (29) is provided at the bottom of the first membrane device (13), a plurality of cross bars (30) are transversely welded in the middle of the positioning frame (29), a clamping rod (31) is provided through the outer side of the cross bar (30), torsion springs (32) are connected to both sides of the clamping rod (31), and adapter plates (33) are inserted at both ends of the positioning frame (29).

3. The membrane filtration ethanol recovery equipment according to claim 1, characterized in that: The feeding assembly comprises a connection frame (301), a first motor (302) is arranged on the top of the feeding assembly (3), an output end of the first motor (302) is rotatably connected to a transmission rod (303), one end of the transmission rod (303) is rotatably connected to a connection rod (305), an outer wall of the connection rod (305) is slidably connected to a positioning block (304), a bottom of the connection rod (305) is slidably connected to a swinging slider (306), a side wall of the swinging slider (306) is screwed to a rotating plate (308), a raw material box (307) is arranged on the top of the connection frame (301), and the raw material box A hopper (316) is provided on one side of (307), a quantitative groove (309) is provided at the bottom of the hopper (316), a connecting rotating rod (315) is provided at one end of the quantitative groove (309), one end of the connecting rotating rod (315) is rotatably connected to a connecting plate (312), a lifting slider (313) is slidably connected to the surface of the connecting plate (312), one end of the lifting slider (313) is slidably connected to a limiting sliding groove (314), one end of the connecting plate (312) is rotatably connected to a connecting rod (311), and one end of the connecting rod (311) is provided with a second motor (310).

4. The membrane filtration ethanol recovery equipment according to claim 1, characterized in that: The heat exchange assembly comprises a feed pipe (4), the end of the feed pipe (4) is connected to a heat exchanger (5), the end of the feed pipe (4) is installed with a spiral tube (6), and the top end of the spiral tube (6) is connected to a first feeding pipe (7).

5. The membrane filtration ethanol recovery equipment according to claim 4, characterized in that: The spiral tube (6) is arranged in a spiral shape, and the first feeding tube (7) and the feed tube (4) form a communication structure through the spiral tube (6).

6. The membrane filtration ethanol recovery equipment according to claim 1, characterized in that: The evaporation tube (9) and the fan (10) are arranged perpendicular to each other, and the evaporation tube (9) is arranged in a spiral shape.

7. The membrane filtration ethanol recovery equipment according to claim 1, characterized in that: The membrane assembly comprises a first membrane device (13) and a diaphragm (14) fixedly installed inside the first membrane device (13); a membrane feed side (15) is arranged on the left side of the diaphragm (14); a membrane permeate side (16) is arranged on the right side of the diaphragm (14); the transport pipe (12) is connected to the top of the membrane feed side (15); the top of the membrane permeate side (16) is connected to a conduit (17); the end of the conduit (17) is connected to a second membrane device (18); and the side of the second membrane device (18) is connected to a third membrane device (19).

8. The membrane filtration ethanol recovery equipment according to claim 7, characterized in that: The membrane permeate side (16) is evacuated through a condenser (25) and a vacuum machine (26), and a vapor partial pressure difference of components on both sides of the membrane is formed by a vacuum evacuation and condensation method.

9. The membrane filtration ethanol recovery equipment according to claim 7, characterized in that: The third membrane device (19) forms a communication structure with the heat exchanger (5) through the second feeding pipe (20).

10. The membrane filtration ethanol recovery equipment according to claim 2, characterized in that: The clamping rod (31) forms a rotating structure with the cross rod (30) through a torsion spring (32), and the clamping rod (31) is symmetrically arranged with respect to the central axis of the first membrane device (13).

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