阅读说明：本技术 一种有机废气溶剂分离提纯装置及提纯工艺 (Organic waste gas solvent separation and purification device and purification process ) 是由 孙超 张雪 于 2021-08-16 设计创作，主要内容包括：本发明涉及提纯装置技术领域,公开了一种有机废气溶剂分离提纯装置及提纯工艺,其结构包括电加热座和冷凝水箱,所述电加热座上设置有透明蒸馏罐和控制器,所述透明蒸馏罐固定连接在所述电加热座的上端,所述控制器固定连接在所述电加热座的正前方,所述透明蒸馏罐上设置有排液阀、第一温度传感器、进气管和坡状加热板,所述排液阀密封连接在所述透明蒸馏罐的左下方。本发明能够同时自动对甲苯和二甲苯进行分段蒸馏,以至于让甲苯和二甲苯自动进行分类收集,避免了甲苯和二甲苯提纯后出现混合的现象,加快了提纯装置对冷凝管内部有机溶剂冷凝时的速度,提高了提纯装置使用过程中节能环保的理念。(The invention relates to the technical field of purification devices, and discloses an organic waste gas solvent separation and purification device and a purification process. The invention can simultaneously and automatically carry out sectional distillation on the toluene and the xylene, so that the toluene and the xylene are automatically classified and collected, the phenomenon of mixing after the toluene and the xylene are purified is avoided, the speed of the purifying device in condensing the organic solvent in the condensing tube is increased, and the energy-saving and environment-friendly concept in the using process of the purifying device is improved.)

1. The utility model provides an organic waste gas solvent separation purification device, includes electric heating seat (1) and condensate tank (2), its characterized in that: the electric heating seat (1) is provided with a transparent distillation retort (3) and a controller (4), the transparent distillation retort (3) is fixedly connected with the upper end of the electric heating seat (1), the controller (4) is fixedly connected with the right front part of the electric heating seat (1), a liquid discharge valve (5), a first temperature sensor (6), an air inlet pipe (7) and a slope-shaped heating plate (8) are arranged on the transparent distillation tank (3), the drain valve (5) is connected to the lower left of the transparent distillation tank (3) in a sealing way, the first temperature sensor (6) is fixedly connected to the middle of the left end of the transparent distillation tank (3), the air inlet pipe (7) is connected to the left upper part of the transparent distillation retort (3) in a sealing way, the slope-shaped heating plate (8) is fixedly connected with the bottom inside the transparent distillation tank (3), the upper end of the transparent distillation tank (3) is connected with a guide pipe (10) through a sealing cover plate (9);

the semiconductor refrigerating sheet (11), the second temperature sensor (12), the booster pump (13) and the water outlet pipe (14) are arranged on the condensed water tank (2), the semiconductor refrigerating sheet (11) is fixedly connected to the front of the condensed water tank (2), the second temperature sensor (12) is hermetically connected to the left end of the condensed water tank (2), the booster pump (13) is fixedly connected to the upper end of the condensed water tank (2), the water inlet pipe (15) is arranged on the booster pump (13), and the lower end of the water outlet pipe (14) is hermetically connected to the left side of the upper end of the condensed water tank (2);

a condensation pipe (16) is arranged at the right end of the guide pipe (10), a first pipeline joint (17), a second pipeline joint (18) and a receiving pipe (19) are arranged on the condensation pipe (16), the first pipeline joint (17) is welded on the left side of the upper end of the condensation pipe (16), the second pipeline joint (18) is welded on the right side of the lower end of the condensation pipe (16), the receiving pipe (19) is connected to the right end of the condensation pipe (16) in a sealing mode, the receiving pipe (19) is connected with a solvent discharge pipe (21) through a three-way joint (20), two solvent discharge pipes (21) are arranged and are respectively provided with a first electromagnetic valve (22) and a second electromagnetic valve (23), and the lower ends of the solvent discharge pipes (21) are respectively located inside a first solvent collection tank (24) and a second solvent collection tank (25);

the controller (4) is electrically connected with the semiconductor refrigeration sheet (11) through an electromagnetic switch (26), and the first temperature sensor (6), the second temperature sensor (12), the first electromagnetic valve (22), the second electromagnetic valve (23) and the booster pump (13) are respectively electrically connected with the controller (4) through leads;

the surface of transparent retort (3) is provided with hybrid motor (27), hybrid motor (27) are connected with dwang (29) through bearing (28) transmission, the skin weld of dwang (29) has mixing plate (30), bearing (28) fixed connection be in the inside right wall of transparent retort (3).

2. The apparatus for separating and purifying the organic waste gas solvent according to claim 1, wherein: the detection end of the first temperature sensor (6) is located inside the transparent distillation retort (3), and the right end of the air inlet pipe (7) is located at the bottom inside the transparent distillation retort (3).

3. The apparatus for separating and purifying the organic waste gas solvent according to claim 1, wherein: the lower end of the sealing cover plate (9) is in threaded connection with the inner portion of the upper end of the transparent distillation tank (3) in a sealing mode, the left end of the guide pipe (10) is in sealed connection with the upper end of the sealing cover plate (9), and the right end of the guide pipe (10) is in sealed connection with the left end of the condensation pipe (16).

4. The apparatus for separating and purifying the organic waste gas solvent according to claim 1, wherein: the upper end sealing connection of outlet pipe (14) is in the inside of first pipe joint (17), the one end sealing connection of inlet tube (15) is in the inside of second pipe joint (18), the other end of inlet tube (15) pass through booster pump (13) with condensate tank (2) upper end sealing connection, and be located the inside well below of condensate tank (2).

5. The apparatus for separating and purifying the organic waste gas solvent according to claim 1, wherein: and the refrigerating end of the semiconductor refrigerating sheet (11) and the detection end of the second temperature sensor (12) are both positioned inside the condensed water tank (2).

6. The apparatus for separating and purifying the organic waste gas solvent according to claim 1, wherein: the left end of the adapting pipe (19) is in sealing connection with the right end of the condensation pipe (16) through threaded connection, and the right end of the adapting pipe (19) is in sealing connection with the middle of the left end of the three-way joint (20).

7. The apparatus for separating and purifying the organic waste gas solvent according to claim 1, wherein: one end of the solvent discharge pipe (21) is connected with the left end and the right end of the three-way joint (20) in a sealing mode, and the first electromagnetic valve (22) and the second electromagnetic valve (23) are connected with the solvent discharge pipe (21) in a sealing mode.

8. The purification process of the organic waste gas solvent separation and purification device according to claim 1, wherein the purification process comprises the following steps: the purification steps are as follows:

a. firstly, introducing waste gas into the transparent distillation tank (3) through an air inlet pipe (7), then setting the detection temperature of a first temperature sensor (6) through a controller (4), wherein the detection temperature is 110 ℃, controlling the operation of an electric heating seat (1) through the controller (4), heating water in the transparent distillation tank (3) through a slope-shaped heating plate (8), the heating time is 15min, controlling the operation of a mixing motor (27) through the controller (4), driving a rotating rod (29) to rotate through a bearing (28) by the mixing motor (27), and then driving the mixing plate (30) to mix liquid in the transparent distillation tank (3) through the rotating rod (29);

b. after the step a is finished, when the internal temperature of the transparent distillation tank (3) reaches the value detected by the first temperature sensor (6), the toluene in the water is evaporated, and enters the interior of the condensation pipe (16) through the conduit (10), at the moment, the booster pump (13) can convey the water in the interior of the condensation water tank (2) to a second pipe joint (18) through the water inlet pipe (15), and enters the interior of a condensation pipe (16) to condense the evaporated toluene, and then the water after absorbing heat is conveyed to the interior of a condensation water tank (2) through a water outlet pipe (14) by a first pipeline joint (17), at this time, the second temperature sensor (12) detects the temperature of the water in the condensed water tank (2), when the water temperature is within the range detected by the second temperature sensor (12), the controller (4) controls the electromagnetic switch (26) to be closed, so that the semiconductor refrigerating sheet (11) operates to cool the water in the condensed water tank (2);

c. after the step b is finished, the toluene in the condensation pipe (16) enters the tee joint (20) through the receiving pipe (19) after being cooled, the controller (4) controls the second electromagnetic valve (23) to be closed, the first electromagnetic valve (22) is controlled to be opened, and the toluene is guided into the first solvent collecting tank (24) through the solvent discharging pipe (21);

d. after the step c is finished, when the purified toluene reaches the set value, setting the detection temperature of the first temperature sensor (6) by the controller (4), wherein the detection temperature is 140 ℃, and then heating the water in the transparent distillation tank (3) by the slope-shaped heating plate (8) for 20 min;

e. after the step d is finished, when the internal temperature of the transparent distillation tank (3) reaches the value detected by the first temperature sensor (6), the dimethylbenzene in the water evaporates and enters the interior of the condensation pipe (16) through the guide pipe (10), the dimethylbenzene in the condensation pipe (16) enters the three-way joint (20) through the receiving pipe (19) after being cooled, the controller (4) controls the second electromagnetic valve (23) to be opened, the first electromagnetic valve (22) to be closed, and the solvent discharge pipe (21) guides the dimethylbenzene into the interior of the second solvent collection tank (25);

f. after the step e is finished, completely discharging the liquid level in the transparent distillation tank (3) through a liquid discharge valve (5), and cleaning the interior of the transparent distillation tank (3);

g. after the step f is finished, respectively adding anhydrous calcium chloride into the first solvent collecting tank (24) and the second solvent collecting tank (25), and then respectively putting the toluene and the xylene in the first solvent collecting tank (24) and the second solvent collecting tank (25) added with the anhydrous calcium chloride into the transparent distillation tank (3) for secondary distillation to obtain pure toluene and xylene.

Technical Field

The invention relates to the technical field of purification devices, in particular to a device and a process for separating and purifying an organic waste gas solvent.

Background

The organic solvent mainly comes from solvents and diluents in the using process of the paint, most of the organic solvent belongs to volatile emission, main pollutants of the organic solvent are dimethylbenzene, methylbenzene and the like, harmful waste gas emitted in the coating process is mainly concentrated on a paint spraying production line, and a paint spraying chamber, a drying chamber and a drying chamber are main waste generating sources.

At present, the existing organic waste gas solvent separation and purification devices have some defects, for example; the existing organic waste gas solvent separation and purification device can not automatically perform sectional distillation on toluene and xylene at the same time, so that the toluene and xylene can not be automatically classified and collected, the toluene and xylene are easy to mix after purification, the convenience of the purification device in organic solvent purification is reduced, the collected toluene and xylene are inconvenient to be secondarily purified, and the purity of the purified toluene and xylene is reduced; the existing organic waste gas solvent separation and purification device can not automatically cool water condensed by an organic solvent in a condensation pipe and can recycle the condensed water, the speed of the purification device is slower when the organic solvent in the condensation pipe is condensed, and the concept of energy conservation and environmental protection in the use process of the purification device is reduced.

Disclosure of Invention

The invention aims to provide a device and a process for separating and purifying an organic waste gas solvent, which solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: an organic waste gas solvent separation and purification device and a purification process comprise an electric heating seat and a condensed water tank, wherein a transparent distillation tank and a controller are arranged on the electric heating seat, the transparent distillation tank is fixedly connected to the upper end of the electric heating seat, the controller is fixedly connected to the position right in front of the electric heating seat, a liquid discharge valve, a first temperature sensor, an air inlet pipe and a slope-shaped heating plate are arranged on the transparent distillation tank, the liquid discharge valve is connected to the lower left of the transparent distillation tank in a sealing mode, the first temperature sensor is fixedly connected to the middle of the left end of the transparent distillation tank, the air inlet pipe is connected to the upper left of the transparent distillation tank in a sealing mode, the slope-shaped heating plate is fixedly connected to the bottom inside the transparent distillation tank, and the upper end of the transparent distillation tank is connected with a guide pipe through a sealing cover plate;

the semiconductor refrigeration piece is fixedly connected to the right front side of the condensed water tank, the second temperature sensor is connected to the left end of the condensed water tank in a sealing mode, the booster pump is fixedly connected to the upper end of the condensed water tank, a water inlet pipe is arranged on the booster pump, and the lower end of the water outlet pipe is connected to the left side of the upper end of the condensed water tank in a sealing mode;

the right end of the guide pipe is provided with a condensation pipe, the condensation pipe is provided with a first pipeline joint, a second pipeline joint and a carrying pipe, the first pipeline joint is welded on the left side of the upper end of the condensation pipe, the second pipeline joint is welded on the right side of the lower end of the condensation pipe, the carrying pipe is connected to the right end of the condensation pipe in a sealing mode, the carrying pipe is connected with a solvent discharge pipe through a three-way joint, the number of the solvent discharge pipe is two, the solvent discharge pipe is provided with a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve are installed on the solvent discharge pipe respectively, and the lower end of the solvent discharge pipe is located inside a first solvent collection tank and a second solvent collection tank respectively;

the controller is electrically connected with the semiconductor refrigeration sheet through an electromagnetic switch, and the first temperature sensor, the second temperature sensor, the first electromagnetic valve, the second electromagnetic valve and the booster pump are respectively and electrically connected with the controller through leads;

the surface of transparent retort is provided with hybrid motor, hybrid motor is connected with the dwang through the bearing transmission, the skin weld of dwang has the mixing plate, bearing fixed connection be in the inside right wall of transparent retort.

In a preferred embodiment of the present invention, the detection end of the first temperature sensor is located inside the transparent retort, and the right end of the air inlet pipe is located at the bottom inside the transparent retort.

In a preferred embodiment of the present invention, the lower end of the sealing cover plate is hermetically connected to the interior of the upper end of the transparent retort by a screw thread, the left end of the guide pipe is hermetically connected to the upper end of the sealing cover plate, and the right end of the guide pipe is hermetically connected to the left end of the condensation pipe.

As a preferred embodiment of the present invention, the upper end of the water outlet pipe is hermetically connected inside the first pipe joint, one end of the water inlet pipe is hermetically connected inside the second pipe joint, and the other end of the water inlet pipe is hermetically connected to the upper end of the condensed water tank through a booster pump and is located at the middle lower part inside the condensed water tank.

As a preferred embodiment of the present invention, the refrigerating end of the semiconductor refrigerating sheet and the detecting end of the second temperature sensor are both located inside the condensed water tank.

In a preferred embodiment of the present invention, the left end of the receiving pipe is hermetically connected to the right end of the condensation pipe by a screw connection, and the right end of the receiving pipe is hermetically connected to the middle of the left end of the three-way joint.

As a preferred embodiment of the present invention, one end of the solvent discharge pipe is hermetically connected to the left and right ends of the three-way joint, and both the first solenoid valve and the second solenoid valve are hermetically connected to the solvent discharge pipe.

In a preferred embodiment of the present invention, the purification process of the organic waste gas solvent separation and purification apparatus comprises the following steps:

a. firstly, introducing waste gas into the transparent distillation tank through an air inlet pipe, then setting the detection temperature of a first temperature sensor through a controller, wherein the detection temperature is 110 ℃, then controlling an electric heating seat to operate through the controller, heating water in the transparent distillation tank through a slope-shaped heating plate for 15min, controlling a mixing motor to operate through the controller, driving a rotating rod to rotate through a bearing by the mixing motor, and then driving the mixing plate to mix liquid in the transparent distillation tank through the rotating rod;

b. after the step a is finished, when the temperature in the transparent distillation retort reaches a value detected by the first temperature sensor, toluene in water is evaporated and enters the interior of the condensation pipe through the guide pipe, at the moment, the booster pump conveys water in the condensation water tank to the joint of the second pipeline through the water inlet pipe and enters the interior of the condensation pipe to condense the evaporated toluene, and then the first pipeline joint conveys the water after absorbing heat to the interior of the condensation water tank through the water outlet pipe, at the moment, the second temperature sensor detects the water temperature in the condensation water tank, and when the water temperature is within the detection range of the second temperature sensor, the controller controls the electromagnetic switch to be closed, so that the semiconductor refrigeration sheet operates to cool the water in the condensation water tank;

c. after the step b is finished, cooling the toluene in the condensation pipe, enabling the cooled toluene to enter the tee joint through the receiving pipe, controlling the second electromagnetic valve to be closed by the controller, simultaneously controlling the first electromagnetic valve to be opened, and guiding the toluene into the first solvent collecting tank by the solvent discharging pipe;

d. after the step c is finished, when the purified toluene reaches the set value, setting the detection temperature of the first temperature sensor by the controller, wherein the detection temperature is 140 ℃, and then heating the water in the transparent distillation tank by the slope-shaped heating plate for 20 min;

e. after the step d is finished, when the temperature in the transparent distillation tank reaches the value detected by the first temperature sensor, the dimethylbenzene in the water evaporates and enters the interior of the condensation pipe through the guide pipe, the dimethylbenzene in the condensation pipe enters the tee joint through the carrying pipe after being cooled, the controller controls the second electromagnetic valve to be opened, the first electromagnetic valve to be closed, and the solvent discharge pipe guides the dimethylbenzene into the second solvent collection tank;

f. after the step e is finished, completely discharging the liquid level in the transparent distillation tank through a liquid discharge valve, and cleaning the interior of the transparent distillation tank;

g. and f, after the step f is finished, respectively adding anhydrous calcium chloride into the first solvent collecting tank and the second solvent collecting tank, and then respectively putting the toluene and the xylene in the first solvent collecting tank and the second solvent collecting tank added with the anhydrous calcium chloride into the transparent distillation tank for secondary distillation to obtain pure toluene and xylene.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the combination of the electric heating seat, the controller, the first temperature sensor, the slope-shaped heating plate, the first electromagnetic valve and the second electromagnetic valve, the sectional distillation of toluene and xylene can be automatically carried out simultaneously, so that the toluene and xylene can be automatically classified and collected, the phenomenon of mixing after the toluene and xylene are purified is avoided, the convenience of the purifying device in purifying an organic solvent is improved, the collected toluene and xylene can be conveniently purified for the second time, and the purity of the purified toluene and xylene is enhanced.

2. According to the invention, through the combination of the semiconductor refrigeration piece, the second temperature sensor, the booster pump and the electromagnetic switch, the water condensed by the organic solvent in the condensation pipe can be automatically cooled, so that the condensed water can be recycled, the speed of the purification device for condensing the organic solvent in the condensation pipe is increased, and the energy-saving and environment-friendly concept of the purification device in the use process is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of an apparatus for separating and purifying an organic waste gas solvent according to the present invention;

FIG. 2 is a cross-sectional view of a transparent distillation tank of the organic waste gas solvent separation and purification apparatus according to the present invention;

FIG. 3 is a side view of a three-way joint of an apparatus for separating and purifying a solvent in an organic waste gas according to the present invention;

FIG. 4 is a control flow chart of an apparatus for separating and purifying a solvent in an organic waste gas according to the present invention;

FIG. 5 is a side view of a hybrid motor of an apparatus for separating and purifying a solvent in an organic waste gas according to the present invention.

In the figure: 1. an electric heating base; 2. a condensed water tank; 3. a transparent retort; 4. a controller; 5. a drain valve; 6. a first temperature sensor; 7. an air inlet pipe; 8. a slope-shaped heating plate; 9. sealing the cover plate; 10. a conduit; 11. a semiconductor refrigeration sheet; 12. a second temperature sensor; 13. a booster pump; 14. a water outlet pipe; 15. a water inlet pipe; 16. a condenser tube; 17. a first pipe joint; 18. a second pipe joint; 19. a bearing pipe; 20. a three-way joint; 21. a solvent discharge pipe; 22. a first solenoid valve; 23. a second solenoid valve; 24. a first solvent collection tank; 25. a second solvent collection tank; 26. an electromagnetic switch; 27. a hybrid motor; 28. a bearing; 29. rotating the rod; 30. and (3) mixing the plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a separation and purification device and a purification process for an organic waste gas solvent comprise an electric heating seat 1 and a condensed water tank 2, wherein a transparent distillation tank 3 and a controller 4 are arranged on the electric heating seat 1, the transparent distillation tank 3 is fixedly connected to the upper end of the electric heating seat 1, the controller 4 is fixedly connected to the right front of the electric heating seat 1, a liquid discharge valve 5, a first temperature sensor 6, an air inlet pipe 7 and a slope-shaped heating plate 8 are arranged on the transparent distillation tank 3, the liquid discharge valve 5 is connected to the left lower side of the transparent distillation tank 3 in a sealing manner, the first temperature sensor 6 is fixedly connected to the middle of the left end of the transparent distillation tank 3, the air inlet pipe 7 is connected to the left upper side of the transparent distillation tank 3 in a sealing manner, the slope-shaped heating plate 8 is fixedly connected to the bottom inside the transparent distillation tank 3, and the upper end of the transparent distillation tank 3 is connected with a guide pipe 10 through a sealing cover plate 9;

the condensed water tank 2 is provided with a semiconductor refrigeration piece 11, a second temperature sensor 12, a booster pump 13 and a water outlet pipe 14, the semiconductor refrigeration piece 11 is fixedly connected right ahead of the condensed water tank 2, the second temperature sensor 12 is hermetically connected at the left end of the condensed water tank 2, the booster pump 13 is fixedly connected at the upper end of the condensed water tank 2, the booster pump 13 is provided with a water inlet pipe 15, and the lower end of the water outlet pipe 14 is hermetically connected at the left side of the upper end of the condensed water tank 2;

a condensation pipe 16 is arranged at the right end of the conduit 10, a first pipe joint 17, a second pipe joint 18 and a receiving pipe 19 are arranged on the condensation pipe 16, the first pipe joint 17 is welded at the left side of the upper end of the condensation pipe 16, the second pipe joint 18 is welded at the right side of the lower end of the condensation pipe 16, the receiving pipe 19 is hermetically connected at the right end of the condensation pipe 16, the receiving pipe 19 is connected with a solvent discharge pipe 21 through a three-way joint 20, two solvent discharge pipes 21 are arranged and are respectively provided with a first electromagnetic valve 22 and a second electromagnetic valve 23, and the lower ends of the solvent discharge pipe 21 are respectively positioned inside a first solvent collection tank 24 and a second solvent collection tank 25;

the controller 4 is electrically connected with the semiconductor refrigeration chip 11 through the electromagnetic switch 26, and the first temperature sensor 6, the second temperature sensor 12, the first electromagnetic valve 22, the second electromagnetic valve 23 and the booster pump 13 are respectively electrically connected with the controller 4 through leads;

the surface of transparent retort 3 is provided with hybrid motor 27, and hybrid motor 27 is connected with dwang 29 through the transmission of bearing 28, and the outer skin weld of dwang 29 has mixing plate 30, and bearing 28 fixed connection is at the inside right wall of transparent retort 3.

In the invention, firstly, the waste gas is introduced into the transparent distillation retort 3 through the gas inlet pipe 7, then the detected temperature of the first temperature sensor 6 is set through the controller 4, the detected temperature is 110 ℃, then the controller 4 controls the electric heating seat 1 to operate, at the moment, the slope-shaped heating plate 8 heats the water in the transparent distillation retort 3, the heating time is 15min, at the moment, the controller 4 controls the operation of the mixing motor 27, the mixing motor 27 drives the rotating rod 29 to rotate through the bearing 28, then the rotating rod 29 drives the mixing plate 30 to mix the liquid in the transparent distillation retort 3, when the internal temperature of the transparent distillation retort 3 reaches the value detected by the first temperature sensor 6, the toluene in the water is evaporated and enters the interior of the condensation pipe 16 through the guide pipe 10, at the moment, the booster pump 13 conveys the water in the condensed water tank 2 to the second pipe joint 18 through the water inlet pipe 15, and enters the condensation pipe 16 to condense the evaporated toluene, and then the first pipe joint 17 conveys the water after absorbing heat to the inside of the condensation water tank 2 through the water outlet pipe 14, at this time, the second temperature sensor 12 detects the water temperature inside the condensation water tank 2, when the water temperature is higher than the detection range of the second temperature sensor 12, the controller 4 controls the electromagnetic switch 26 to be closed, so that the semiconductor refrigeration sheet 11 operates to cool the water inside the condensation water tank 2, the toluene inside the condensation pipe 16 enters the three-way joint 20 through the receiving pipe 19 after being cooled, the controller 4 controls the second electromagnetic valve 23 to be closed, and simultaneously controls the first electromagnetic valve 22 to be opened, and then the toluene is guided into the first solvent collecting tank 24 through the solvent discharge pipe 21, when the purified toluene reaches the set temperature, the controller 4 sets the detection temperature of the first temperature sensor 6, the detection temperature is 140 ℃, at this time, the sloping heating plate 8 heats the water in the transparent distillation tank 3, the heating time is 20min, when the temperature in the transparent distillation tank 3 reaches the value detected by the first temperature sensor 6, xylene in the water evaporates and enters the inside of the condensation pipe 16 through the guide pipe 10, the xylene in the inside of the condensation pipe 16 enters the tee joint 20 through the receiving pipe 19 after being cooled, the controller 4 controls the second electromagnetic valve 23 to be opened and controls the first electromagnetic valve 22 to be closed simultaneously, the xylene is guided into the inside of the second solvent collection tank 25 through the solvent discharge pipe 21, the liquid level in the inside of the transparent distillation tank 3 is completely discharged through the liquid discharge valve 5, the inside of the transparent distillation tank 3 is cleaned, anhydrous calcium chloride is respectively added into the first solvent collection tank 24 and the inside of the second solvent collection tank 25, and the anhydrous calcium chloride is added into the first solvent collection tank 24 and the anhydrous calcium chloride inside the second solvent collection tank 25 Benzene and xylene are respectively put into the transparent distillation tank 3 for secondary distillation to obtain pure toluene and xylene.

In an alternative embodiment, the sensing end of the first temperature sensor 6 is located inside the transparent retort 3, and the right end of the air inlet pipe 7 is located at the bottom inside the transparent retort 3.

It is convenient to allow the first temperature sensor 6 to detect the internal temperature of the transparent retort 3.

In an alternative embodiment, the lower end of the sealing cover plate 9 is connected with the inner part of the upper end of the transparent distillation tank 3 in a sealing way through threads, the left end of the guide pipe 10 is connected with the upper end of the sealing cover plate 9 in a sealing way, and the right end of the guide pipe 10 is connected with the left end of the condensation pipe 16 in a sealing way.

It should be noted that the convenience when the sealed cover plate 9 and the transparent retort 3 are disassembled and assembled is facilitated.

In an alternative embodiment, the upper end of the water outlet pipe 14 is hermetically connected to the inside of the first pipe joint 17, one end of the water inlet pipe 15 is hermetically connected to the inside of the second pipe joint 18, and the other end of the water inlet pipe 15 is hermetically connected to the upper end of the condensed water tank 2 through the pressurizing pump 13 and is located at the middle lower part of the inside of the condensed water tank 2.

It should be noted that the booster pump 13 delivers the water in the condensed water tank 2 to the second pipe joint 18 through the water inlet pipe 15, and enters the condensing pipe 16 to condense the evaporated toluene, and then delivers the water after absorbing heat to the inside of the condensed water tank 2 through the water outlet pipe 14 through the first pipe joint 17, so as to speed up the efficiency of the condensed water for cooling the organic solution in the condensing pipe 16.

In an alternative embodiment, the refrigerating end of the semiconductor refrigerating chip 11 and the detecting end of the second temperature sensor 12 are both located inside the condensed water tank 2.

It should be noted that, the semiconductor refrigeration sheet 11 is convenient to cool the condensed water in the condensed water tank 2.

In an alternative embodiment, the left end of the adapting pipe 19 is hermetically connected with the right end of the condensation pipe 16 through a threaded connection, and the right end of the adapting pipe 19 is hermetically connected with the middle of the left end of the three-way joint 20.

It should be noted that the receiving pipe 19 is convenient to convey the organic solvent through the three-way joint 20.

In an alternative embodiment, one end of the solvent discharge pipe 21 is hermetically connected to both left and right ends of the three-way joint 20, and the first solenoid valve 22 and the second solenoid valve 23 are both hermetically connected to the solvent discharge pipe 21.

It is noted that it is convenient to discharge different organic solvent rows in a classified manner.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.