Organic solvent extraction device

Abstract

The utility model discloses an organic solvent extraction device, which belongs to the technical field of organic solvent extraction and is characterized in that a mother liquor storage tank, a mother liquor feeding pump, a horizontal evaporator, an efficient rotary rectifying machine, a kettle liquid delivery pump, a main condenser, a tail gas condenser, a low-fraction storage tank and a low-boiling fraction delivery pump are connected through pipelines. Compared with a traditional rectifying tower, the organic solvent extraction device built by taking the efficient rotary rectifying machine as a core has the advantages that the occupied area of equipment is greatly reduced, the extraction efficiency is higher, the energy consumption is lower, the size is small, the structure is simple, complex pipeline connection is omitted, the investment cost is lower, disassembly, assembly, cleaning and maintenance are easy, filler modification is easy, and the cost is low. And through the arrangement of the filter cover and the connecting seat, impurities in the tail gas can be conveniently intercepted, dirt heat resistance generated by a heat exchange pipe in the tail gas condenser is avoided, meanwhile, the intercepted impurities can be conveniently cleaned, and the use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of organic solvent extraction, and more specifically to an organic solvent extraction device. Background Art

[0002] A distillation tower is a tower-type gas-liquid contact device for distillation. It uses the different volatilities of the components in the mixture, that is, the different vapor pressures of the components at the same temperature, to transfer the light components (low boiling substances) in the liquid phase to the gas phase, and the heavy components (high boiling substances) in the gas phase to the liquid phase, thereby achieving the purpose of separation.

[0003] At present, when using traditional distillation towers for organic solvent extraction, the equipment occupies a large area, has a complex structure, and has numerous connecting pipelines, which greatly increases the investment cost. It is also difficult to disassemble, clean, and repair. At the same time, the modification of the filler is also difficult, and the impurities in the exhaust gas will produce dirt thermal resistance. In addition, when using traditional distillation towers for organic solvent extraction, the extraction efficiency is reduced, the energy consumption is high, and it may not meet people's usage needs. For this reason, we designed an organic solvent extraction device to solve the above problems. Utility Model Content

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide an organic solvent extraction device, which is constructed with a high-efficiency rotary distillation machine as the core. Compared with the traditional distillation tower, it greatly reduces the equipment footprint, has higher extraction efficiency and lower energy consumption, is small in size, simple in structure, eliminates complex pipeline connections, has low investment cost, is easy to disassemble, clean and maintain, and is easy to modify the filler. In addition, through the provided filter cover and connecting seat, it is not only convenient to intercept impurities in the exhaust gas and avoid the generation of dirt thermal resistance in the heat exchange tubes in the exhaust condenser, but also very convenient for cleaning the intercepted impurities, greatly improving the convenience of use.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] An organic solvent extraction device comprises a mother liquid storage tank, a mother liquid feed pump, a horizontal evaporator, a high-efficiency rotary distillation machine, a kettle liquid delivery pump, a main condenser, a tail gas condenser, a low-fraction storage tank and a low-boiling fraction delivery pump, wherein the mother liquid storage tank, the mother liquid feed pump, the horizontal evaporator, the high-efficiency rotary distillation machine, the kettle liquid delivery pump, the main condenser, the tail gas condenser, the low-fraction storage tank and the low-boiling fraction delivery pump are connected by pipelines, the surface of the tail gas condenser is provided with a low-temperature cooling water inlet pipe, a low-temperature cooling water outlet pipe, a tail gas outlet pipe, a filter cover and a connecting seat, the surface of the filter cover is provided with a feeding pipe and a discharge pipe, one end of the feeding pipe and the discharge pipe are both connected to a filter cavity, and one end of the filter cover is provided There is an exhaust gas inlet pipe, a mesh plate is fixedly installed in the middle position of the connecting seat, and bolt holes are provided on the surface of the connecting seat. The organic solvent extraction device is constructed with a high-efficiency rotary distillation machine as the core. Compared with the traditional distillation tower, it greatly reduces the equipment footprint, has higher extraction efficiency and lower energy consumption, is small in size, simple in structure, eliminates complex pipeline connections, has low investment cost, is easy to disassemble, clean and maintain, and is easy to modify the filler. In addition, the filter cover and connecting seat are set, which not only facilitates the interception of impurities in the exhaust gas and avoids the generation of dirt thermal resistance in the heat exchange tube in the exhaust condenser, but also is very convenient for cleaning the intercepted impurities, greatly improving the convenience of use.

[0007] Furthermore, a connecting groove is provided at the other end of the filter cover, a connecting portion is provided on one side of the connecting seat, an external thread is provided on the surface of the connecting portion, and an internal thread matching the connecting portion is provided on the inner wall of the connecting groove, so that the filter cover and the connecting seat have the function of disassembly and combination, which is convenient for the later replacement of the mesh plate.

[0008] Furthermore, one end of the feeding tube is provided with an axially penetrating feeding hole, one end of the feeding tube is connected to a sealing cover through a thread, one end of the sealing cover is provided with a thread groove, and the surface of the feeding tube is provided with an external thread, which facilitates the addition of filling particles through the feeding tube.

[0009] Furthermore, a valve is fixedly installed on the surface of the discharge pipe, and the valve is an intelligent control valve. One end of the discharge pipe is provided with an axially penetrating discharge hole, which is convenient for discharging filling particles and intercepting impurities through the discharge pipe for cleaning and impurity removal.

[0010] Furthermore, the interior of the filter cavity is filled with filter particles, the particle size of the filter particles is larger than the mesh aperture set by the screen plate, and the filter particles are activated carbon particles, which can intercept impurities in the exhaust gas and have a filtering effect.

[0011] Furthermore, a rubber sealing plug is provided at the center of the thread groove, and the surface of the sealing plug is in contact and extrusion with the inner wall of the feeding hole.

[0012] Furthermore, the side of the sealing cover is provided with annular anti-slip bumps distributed at equal intervals.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution uses a high-efficiency rotary distillation machine as the core to build an organic solvent extraction device. Compared with traditional distillation towers, it greatly reduces the equipment footprint, has higher extraction efficiency and lower energy consumption, is small in size, simple in structure, eliminates complex pipeline connections, has low investment costs, is easy to disassemble, clean, and maintain, and is easy to modify the filler.

[0015] This solution not only facilitates the interception of impurities in the exhaust gas through the provision of a filter cover and a connecting seat, thereby avoiding the generation of fouling thermal resistance in the heat exchange tubes in the exhaust condenser, but also makes it very easy to clean the intercepted impurities, thereby greatly improving the ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 A magnified view of part A;

[0018] Figure 3 for Figure 2 A three-dimensional diagram of the filter cover and the connecting seat installation structure;

[0019] Figure 4 for Figure 3 A three-dimensional diagram of the connecting seat structure;

[0020] Figure 5 for Figure 3 A three-dimensional diagram of the filter cover structure.

[0021] Description of the numbers in the figure:

[0022] 1 mother liquor storage tank, 2 mother liquor feed pump, 3 horizontal evaporator, 4 high-efficiency rotary distillation machine, 5 kettle liquid transfer pump, 6 main condenser, 7 tail gas condenser, 71 low-temperature cooling water inlet pipe, 72 low-temperature cooling water outlet pipe, 73 tail gas outlet pipe, 74 filter cover, 741 tail gas inlet pipe, 742 discharge pipe, 743 feeding pipe, 744 valve, 745 sealing cover, 746 filter chamber, 747 connecting groove, 75 connecting seat, 751 bolt hole, 752 mesh plate, 753 connecting part, 8 low-distillate storage tank, 9 low-boiling distillate transfer pump. DETAILED DESCRIPTION

[0023] 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 embodiments described 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. Example 1

[0024] See also Figure 1-5 , an organic solvent extraction device, comprising a mother liquid storage tank 1, a mother liquid feed pump 2, a horizontal evaporator 3, a high-efficiency rotary distillation machine 4, a kettle liquid delivery pump 5, a main condenser 6, a tail gas condenser 7, a low-fraction storage tank 8 and a low-boiling fraction delivery pump 9, the gas outlet end of the horizontal evaporator 3 is connected with a plant steam pipe for easy use of steam, the output end of the kettle liquid delivery pump 5 is connected with a subsequent treatment pipe for easy subsequent treatment of the evaporated medium, the output end of the low-boiling fraction delivery pump 9 is connected to the rear-end butanone treatment pipeline for easy later treatment, the mother liquid storage tank 1, the mother liquid feed pump 2, the horizontal evaporator 3, the high-efficiency rotary distillation machine 4, the kettle liquid delivery pump 5, the main condenser 6, the tail gas condenser 7, the low-fraction storage tank 8 and the low-boiling fraction delivery pump 9 are connected by pipelines, so that the organic solvent extraction device composed of the above-mentioned devices has a small footprint and is easy to install. The connection is simple and very convenient for later disassembly, cleaning and modification. The surface of the exhaust condenser 7 is provided with a low-temperature cooling water inlet pipe 71, a low-temperature cooling water outlet pipe 72, an exhaust gas outlet pipe 73, a filter cover 74 and a connecting seat 75. The surface of the filter cover 74 is provided with a feeding pipe 743 and a discharge pipe 742. A valve 744 is fixedly installed on the surface of the discharge pipe 742. The valve 744 is an intelligent control valve. One end of the discharge pipe 742 is provided with an axially penetrating discharge hole, which is convenient for discharging filling particles and intercepting impurities through the discharge pipe 742 for cleaning and impurity removal. One end of the feeding pipe 743 and the discharge pipe 742 are connected to the filter cavity 746. One end of the filter cover 74 is provided with an exhaust gas inlet pipe 741. A mesh plate 752 is fixedly installed in the middle position of the connecting seat 75, and a bolt hole 751 is provided on the surface of the connecting seat 75.

[0025] The other end of the filter cover 74 is provided with a connecting groove 747, and one side of the connecting seat 75 is provided with a connecting part 753. The surface of the connecting part 753 is provided with an external thread, and the inner wall of the connecting groove 747 is provided with an internal thread matching the connecting part 753, so that the filter cover 74 and the connecting seat 75 have the function of disassembly and combination, which is convenient for the later replacement of the mesh plate 752. One end of the feeding pipe 743 is provided with an axially penetrating feeding hole, and one end of the feeding pipe 743 is connected to the sealing cover 745 through a thread. One end of the sealing cover 745 is provided with a threaded groove, and the surface of the feeding pipe 743 is provided with an external thread, which is convenient for adding filling particles through the feeding pipe 743.

[0026] The interior of the filter cavity 746 is filled with filter particles, the particle size of the filter particles is larger than the mesh aperture set by the mesh plate 752, and the filter particles are activated carbon particles, which can intercept impurities in the exhaust gas and have a filtering effect. A rubber sealing plug is provided at the center of the threaded groove, and the surface of the sealing plug is in contact and extrusion with the inner wall of the feeding hole. The side of the sealing cover 745 is provided with anti-slip bumps distributed in a ring at equal intervals.

[0027] When the organic solvent extraction device is in use, the raw materials in the mother liquid storage tank 1 are transported to the horizontal evaporator 3 and the high-efficiency rotary distillation machine 4 through the mother liquid feed pump 2. At the same time, the horizontal evaporator 3 and the high-efficiency rotary distillation machine 4 are connected by a pipeline to facilitate the mutual transportation of the medium. Then the high-efficiency rotary distillation machine 4 transports the raw material medium to the main condenser 6 and the tail gas condenser 7 through the pipeline. The condensed organic solvent is then stored in the low-fraction storage tank 8 through the pipeline. When the tail gas enters the filter cover 74 through the tail gas inlet pipe 741, the impurities in the tail gas are intercepted and filtered by the filter particles, so that the filtered tail gas enters the tail gas condenser 7 for processing and exhaust. When the filter particles and filtered impurities need to be cleaned, they can be removed through the exhaust pipe. The material pipe 742 discharges it out of the filter chamber 746, and then the filter particles can be added again through the feeding pipe 743. The organic solvent extraction device is built with the high-efficiency rotary distillation machine 4 as the core. Compared with the traditional distillation tower, it greatly reduces the equipment footprint, has higher extraction efficiency and lower energy consumption, is small in size, simple in structure, eliminates complex pipeline connections, has low investment cost, is easy to disassemble, clean and maintain, and is easy to modify the filler. In addition, the filter cover 74 and the connecting seat 75 are set, which not only facilitates the interception of impurities in the exhaust gas and avoids the generation of dirt thermal resistance in the heat exchange tube in the exhaust condenser 7, but also is very convenient for cleaning the intercepted impurities, greatly improving the convenience of use.

[0028] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An organic solvent extraction device, comprising a mother liquid storage tank (1), a mother liquid feed pump (2), a horizontal evaporator (3), a high-efficiency rotary distillation machine (4), a kettle liquid delivery pump (5), a main condenser (6), a tail gas condenser (7), a low-distillate storage tank (8) and a low-boiling fraction delivery pump (9), characterized in that: The mother liquid storage tank (1), the mother liquid feed pump (2), the horizontal evaporator (3), the high-efficiency rotary distillation machine (4), the kettle liquid delivery pump (5), the main condenser (6), the tail gas condenser (7), the low-fraction storage tank (8) and the low-boiling fraction delivery pump (9) are connected by pipelines. The surface of the tail gas condenser (7) is provided with a low-temperature cooling water inlet pipe (71), a low-temperature cooling water outlet pipe (72), a tail gas outlet pipe (73), a filter cover (74) and a connecting seat (75). The surface of the filter cover (74) is provided with a feeding pipe (743) and a discharge pipe (742). One end of the feeding pipe (743) and the discharge pipe (742) are both connected to a filter cavity (746). One end of the filter cover (74) is provided with a tail gas inlet pipe (741). A mesh plate (752) is fixedly installed in the middle position of the connecting seat (75). The surface of the connecting seat (75) is provided with a bolt hole (751).

2. An organic solvent extraction device according to claim 1, characterized in that: The other end of the filter cover (74) is provided with a connecting groove (747), one side of the connecting seat (75) is provided with a connecting portion (753), the surface of the connecting portion (753) is provided with an external thread, and the inner wall of the connecting groove (747) is provided with an internal thread matching the connecting portion (753).

3. An organic solvent extraction device according to claim 1, characterized in that: One end of the feeding tube (743) is provided with an axially penetrating feeding hole, one end of the feeding tube (743) is connected to a sealing cover (745) via a thread, one end of the sealing cover (745) is provided with a thread groove, and the surface of the feeding tube (743) is provided with an external thread.

4. The organic solvent extraction device according to claim 1, characterized in that: A valve (744) is fixedly mounted on the surface of the discharge pipe (742), and the valve (744) is an intelligent control valve. One end of the discharge pipe (742) is provided with an axially penetrating discharge hole.

5. The organic solvent extraction device according to claim 1, characterized in that: The interior of the filter cavity (746) is filled with filter particles, the particle size of the filter particles being larger than the mesh aperture of the mesh plate (752), and the filter particles are activated carbon particles.

6. The organic solvent extraction device according to claim 3, characterized in that: A rubber sealing plug is provided at the center of the thread groove, and the surface of the sealing plug contacts and is squeezed against the inner wall of the feeding hole.

7. The organic solvent extraction device according to claim 3, characterized in that: The side of the sealing cover (745) is provided with annular anti-slip bumps distributed at equal intervals.

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