Methanol and toluene mixture distillation device
By introducing a condenser conical baffle and a multi-stage condenser structure into the distillation unit, the problems of steam loss and pollution were solved, achieving efficient separation and resource recovery of methanol-toluene mixtures, thus improving separation efficiency and environmental friendliness.
Patent Information
- Application Number
- CN202422710352.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing distillation equipment releases vapor directly into the environment during the separation of methanol and toluene mixtures, resulting in energy waste. Furthermore, the emission of vapors containing toxic components pollutes the air, affecting air quality and health.
A methanol-toluene mixture distillation device was designed, which adopts a condenser conical guide plate and a multi-stage condenser structure. The vapor is condensed and recovered through vent holes and gas pipe channels. The heating process is optimized by combining stirring blades and temperature sensors to ensure that the vapor is fully condensed and the liquid is effectively collected.
It improves steam recovery rate, reduces energy waste, maximizes resource utilization, avoids environmental pollution, and improves separation efficiency and safety.
Smart Images
Figure CN223930705U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of methanol-toluene mixture distillation and separation technology, specifically a methanol-toluene mixture distillation apparatus. Background Technology
[0002] Distillation is a thermodynamic separation process that utilizes the different boiling points of components in a mixed liquid or liquid-solid system. It is a unit operation process in which the lower boiling point component is evaporated by heating and then condensed to separate the entire component. It is an important method for purifying and separating liquid compounds. Distillation apparatus is required when separating a methanol-toluene mixture.
[0003] Existing distillation apparatuses mainly consist of a distillation tank, a flask, heating elements, and a condenser. In the distillation separation of a methanol-toluene mixture, the methanol-toluene mixture is first introduced into a flask within the distillation tank through an inlet pipe. The flask is then heated by the heating elements. When the mixture in the flask reaches a certain temperature, the methanol liquid, which has a lower boiling point, begins to vaporize. The vapor rises to the top of the distillation tank, where it is condensed into liquid in the condenser. Part of this liquid is returned to the top of the column via a reflux system, while the remainder is collected as methanol. A higher purity toluene product is obtained at the bottom of the column, thus achieving the separation and collection of methanol and toluene.
[0004] In existing distillation apparatuses, during distillation separation, some of the vaporized liquid is directly released into the environment through the exhaust pipe, resulting in energy waste. Furthermore, since the vapor contains toxic methanol, direct emission into the air will pollute the environment, affect air quality, and endanger human health. Therefore, a methanol-toluene mixture distillation apparatus is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art and solve the problems mentioned in the background art, this utility model proposes a methanol-toluene mixture distillation apparatus.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A methanol-toluene mixture distillation apparatus of this utility model includes a distillation tank; a flask is provided at the bottom of the distillation tank; a partition is fixedly connected between the outer circumferential surface of the upper end of the flask and the inner wall of the distillation tank; a threaded heating tube is provided between the inner circumferential surface of the distillation tank and the outer circumferential surface of the flask; a fixed cylinder is fixedly connected to the outer wall of the top end of the flask; a condensing conical guide plate is fixedly connected to the top port of the fixed cylinder; multiple vent holes are provided on the condensing conical guide plate; and two... A first fixed bracket is provided, and a first condenser is fixedly connected between the two first fixed brackets. A connecting pipe connects the first condenser to the condensing conical guide plate. An exhaust port is provided at the top of the distillation flask, and a gas pipe channel is fixedly connected to the port of the exhaust port. A second condenser is connected to the gas pipe channel, and the bottom port of the gas pipe channel is located within the cavity formed by the distillation flask and the fixed cylinder. An exhaust pipe is connected to the gas pipe channel. Two second fixed brackets are fixedly connected to the other side of the top of the distillation flask, and a second condenser is fixedly connected between the two second fixed brackets. A liquid inlet pipe is connected to the side wall of the flask. Furthermore, the inlet pipe is installed throughout the distillation tank. During the distillation separation of the methanol-toluene mixture, the mixture first flows into the flask through the inlet pipe. Then, the flask is heated by a threaded heating tube. When the mixture in the flask reaches a certain temperature, the methanol, which has a lower boiling point, begins to vaporize. The vapor rises and enters the condensing cone-shaped guide plate at the top of the distillation tank through the vent. Under the action of the first condenser, the vapor is condensed and reliquefied. The reliquefied methanol then flows along the condensing cone... The liquid flows into the cavity formed by the fixed cylinder and the distillation tank through the surface of the guide plate. Some of the vapor after liquid vaporization is discharged through the gas pipe channel. Under the action of the second condenser, the vapor in the gas pipe channel is further condensed and liquefied. The condensed and liquefied liquid flows back into the cavity formed by the fixed cylinder and the distillation tank through the bottom port of the gas pipe channel, and merges with the initially collected methanol liquid. This structural design ensures sufficient condensation of steam and effective collection of liquid, which not only improves the steam recovery rate, but also reduces energy waste, maximizes resource utilization, and avoids environmental pollution.
[0007] Preferably, the bottom of the distillation tank is connected to a first drain pipe, which is equipped with a first one-way valve. A second drain pipe is connected to one side of the circumferential surface of the distillation tank, which is equipped with a second one-way valve. After the solution distillation and separation are completed, the first one-way valve and the second one-way valve are opened, so that the separated solution is discharged along the first drain pipe and the second drain pipe respectively, and the separated solution is collected separately, thereby completing the separation and collection of methanol and toluene liquid.
[0008] Preferably, an electric motor is installed at the bottom of the distillation vessel, and a rotating rod is connected to the output end of the electric motor. The bottom end of the rotating rod is rotatably mounted on a fixed plate. A fixed plate is installed on the inner wall of the flask, and multiple stirring blades are fixed on the outer surface of the rotating rod. When heating the mixed liquid in the flask, the electric motor is started, causing the rotating rod to drive the stirring blades to rotate. The rotation of the stirring blades can break the thermal stratification phenomenon inside the mixed liquid, making the heat more evenly distributed in all parts of the flask. Furthermore, the rotation of the stirring blades helps to promote the generation and rise of methanol vapor, because stirring can break the surface tension of the liquid, allowing more liquid surface to be exposed to vapor. This helps to increase the amount of methanol vaporization and improve the separation efficiency of the distillation process.
[0009] Preferably, a temperature sensor is installed inside the flask, and a temperature display is installed on the outer wall of the distillation vessel. A wire connects the temperature display and the temperature sensor. During distillation, by setting the temperature sensor, the heating temperature of the mixed liquid inside the flask can be monitored in real time, and the monitored temperature value is transmitted to the temperature display and displayed on the temperature display. By setting the temperature monitoring mechanism, the heating temperature of the mixed liquid inside the flask can be monitored in real time, ensuring that the distillation process is carried out within a predetermined temperature range to maintain optimal distillation conditions, thereby improving the distillation effect.
[0010] The advantages of this utility model are:
[0011] In the distillation separation of a methanol-toluene mixture, this invention first introduces the mixture into a flask through an inlet pipe. The flask is then heated by a threaded heating tube. Once the mixture reaches a certain temperature, the methanol, with its lower boiling point, begins to vaporize. The vapor rises and enters the condensing conical baffle plate at the top of the distillation tank through a vent. Under the action of the first condenser, the vapor is condensed and reliquefied. The reliquefied methanol flows along the surface of the condensing conical baffle plate into the cavity formed by the fixed cylinder and the distillation tank. Part of the vapor is discharged through a gas pipe channel. Under the action of the second condenser, the vapor in the gas pipe channel is further condensed and liquefied. The condensed and liquefied liquid flows back into the cavity formed by the fixed cylinder and the distillation tank through the bottom port of the gas pipe channel, merging with the initially collected methanol liquid. This structural design ensures sufficient vapor condensation and effective liquid collection, improving vapor recovery rate, reducing energy waste, maximizing resource utilization, and avoiding environmental pollution. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device;
[0014] Figure 2 A cross-sectional three-dimensional structural diagram of a distillation jar;
[0015] Figure 3 A cross-sectional three-dimensional structural diagram of the distillation flask, the stationary cylinder, and the flask;
[0016] Figure 4 A cross-sectional three-dimensional structural diagram of a distillation jar;
[0017] Figure 5 This is a cross-sectional three-dimensional structural diagram of the distillation jar and the fixed cylinder.
[0018] In the diagram: 1. Distillation vessel; 2. Flask; 3. Baffle plate; 4. Threaded heating tube; 5. Fixed cylinder; 6. Conical condenser baffle; 7. Vent hole; 8. First fixed frame; 9. First condenser; 10. Connecting pipe; 11. Gas pipe channel; 12. Second fixed frame; 13. Second condenser; 14. Gas outlet pipe; 15. Second drain pipe; 16. First drain pipe; 17. Motor; 18. Rotating rod; 19. Fixed plate; 20. Stirring blade; 21. Temperature sensor; 22. Temperature display; 23. Wire; 24. Liquid inlet pipe. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0020] Please see Figure 1-5As shown, a methanol-toluene mixture distillation apparatus includes a distillation tank 1; a flask 2 is disposed at the bottom of the distillation tank 1, a partition 3 is fixedly connected between the outer circumferential surface of the upper end of the flask 2 and the inner wall of the distillation tank 1, a threaded heating tube 4 is disposed between the inner circumferential surface of the distillation tank 1 and the outer circumferential surface of the flask 2, a fixing cylinder 5 is fixedly connected to the outer wall of the top end of the flask 2, a condensing conical guide plate 6 is fixedly connected to the top end of the fixing cylinder 5, the condensing conical guide plate 6 has multiple vent holes 7, two first fixing brackets 8 are fixedly connected to one side of the top end of the distillation tank 1, and a second fixing bracket 8 is fixedly connected between the two first fixing brackets 8. A condenser 9 is provided, with a connecting pipe 10 connecting the first condenser 9 and the condensing conical guide plate 6. An exhaust port is provided at the top of the distillation tank 1, and a gas pipe channel 11 is fixedly connected to the port of the exhaust port. A second condenser 13 is connected to the gas pipe channel 11, and the bottom port of the gas pipe channel 11 is located within the cavity formed by the distillation tank 1 and the fixed cylinder 5. An outlet pipe 14 is connected to the gas pipe channel 11. Two second fixed brackets 12 are fixedly connected to the other side of the top of the distillation tank 1, and a second condenser 13 is fixedly connected between the two second fixed brackets 12. This is used for distillation separation of a methanol-toluene mixture. First, the methanol-toluene mixture flows into flask 2 through inlet pipe 24. Then, flask 2 is heated by threaded heating pipe 4. When the mixture in flask 2 reaches a certain temperature, the methanol with the lower boiling point begins to vaporize. The vapor from the vaporized methanol rises and enters the condensing conical guide plate 6 at the top of the distillation tank 1 through vent 7. Under the action of the first condenser 9, the vapor from the vaporized liquid is condensed and reliquefied. The reliquefied methanol flows along the surface of the condensing conical guide plate 6 into the fixed cylinder 5 and the distillation tank. Within the cavity formed by the liquid, some of the vapor after vaporization is discharged through the gas pipe channel 11. Under the action of the second condenser 13, the vapor in the gas pipe channel 11 is further condensed and liquefied. The condensed and liquefied liquid flows back into the cavity formed by the fixed cylinder 5 and the distillation tank 1 through the bottom port of the gas pipe channel 11, where it merges with the initially collected methanol liquid. This structural design ensures sufficient condensation of vapor and effective collection of liquid, which not only improves the vapor recovery rate but also reduces energy waste, maximizes resource utilization, and avoids environmental pollution.
[0021] The bottom of the distillation tank 1 is connected to a first drain pipe 16, which is equipped with a first one-way valve. A second drain pipe 15 is connected to one side of the circumference of the distillation tank 1, which is equipped with a second one-way valve. An inlet pipe 24 is connected to the side wall of the flask 2 and passes through the distillation tank 1. After the solution distillation and separation are completed, the first one-way valve and the second one-way valve are opened to allow the separated solution to be discharged along the first drain pipe 16 and the second drain pipe 15, respectively. The separated solutions are then collected separately, thereby completing the separation and collection of methanol and toluene liquids.
[0022] Please see Figure 3 As shown, a motor 17 is installed at the bottom of the distillation tank 1, and a rotating rod 18 is connected to the output end of the motor 17. The bottom end of the rotating rod 18 is rotatably mounted on a fixed plate 19. A fixed plate 19 is installed on the inner wall of the flask 2, and multiple stirring blades 20 are fixed on the outer surface of the rotating rod 18. When heating the mixed liquid in the flask 2, the motor 17 is started, causing the rotating rod 18 to drive the stirring blades 20 to rotate. The rotation of the stirring blades 20 can break the thermal stratification phenomenon inside the mixed liquid, so that the heat is more evenly distributed in all parts of the flask 2. The rotation of the stirring blades 20 also helps to promote the generation and rise of methanol vapor, because stirring can break the surface tension of the liquid, allowing more liquid surface to be exposed to vapor. This helps to increase the amount of methanol vaporization and improve the separation efficiency of the distillation process.
[0023] Please see Figure 3-4 As shown, a temperature sensor 21 is installed inside the flask 2, and a temperature display 22 is installed on the outer wall of the distillation vessel 1. A wire 23 connects the temperature display 22 and the temperature sensor 21. During distillation, the temperature sensor 21 (model DS18B20) can monitor the heating temperature of the mixed liquid inside the flask 2 in real time and transmit the monitored temperature value to the temperature display 22 (model HD-630), which displays the temperature value. By setting up a temperature monitoring mechanism, the heating temperature of the mixed liquid inside the flask 2 can be monitored in real time, ensuring that the distillation process is carried out within a predetermined temperature range to maintain optimal distillation conditions and thus improve the distillation effect.
[0024] Working Principle: Existing distillation apparatuses often result in some liquid vapor being directly released into the environment through the exhaust pipe during distillation, wasting energy. Furthermore, the vapor contains toxic methanol, which pollutes the air, affecting air quality and harming health. Therefore, this invention proposes a methanol-toluene mixture distillation apparatus to address these issues. In the distillation separation of the methanol-toluene mixture, the mixture is first introduced into flask 2 through inlet pipe 24. Then, flask 2 is heated by threaded heating pipe 4. When the mixture in flask 2 reaches a certain temperature, the methanol, with its lower boiling point, begins to vaporize. The vapor rises and enters the condenser at the top of distillation tank 1 through vent 7. Inside the conical guide plate 6, under the action of the first condenser 9, the vaporized liquid is condensed and reliquefied. The reliquefied methanol liquid flows along the surface of the condensing conical guide plate 6 into the cavity formed by the fixed cylinder 5 and the distillation tank 1. Part of the vaporized liquid is discharged through the gas pipe channel 11. Under the action of the second condenser 13, the vapor in the gas pipe channel 11 is further condensed and liquefied. The condensed and liquefied liquid flows back into the cavity formed by the fixed cylinder 5 and the distillation tank 1 through the bottom port of the gas pipe channel 11, and merges with the initially collected methanol liquid. This structural design ensures sufficient condensation of steam and effective collection of liquid, which not only improves the steam recovery rate but also reduces energy waste, maximizes resource utilization, and avoids environmental pollution.
[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A methanol-toluene mixture distillation apparatus, characterized in that: The system includes a distillation vessel (1); a flask (2) is provided at the bottom of the distillation vessel (1); a partition (3) is fixed between the outer circumferential surface of the upper end of the flask (2) and the inner wall of the distillation vessel (1); a threaded heating tube (4) is provided between the inner circumferential surface of the distillation vessel (1) and the outer circumferential surface of the flask (2); a fixing cylinder (5) is fixed to the outer wall of the top end of the flask (2); a condensing conical guide plate (6) is fixed to the top end of the fixing cylinder (5); multiple vent holes (7) are provided on the condensing conical guide plate (6); two first fixing brackets (8) are fixed to one side of the top end of the distillation vessel (1); and the two first fixing brackets (8) are fixed together. There is a first condenser (9), and a connecting pipe (10) is connected between the first condenser (9) and the condensing conical guide plate (6). The top of the distillation tank (1) is provided with an exhaust hole, and a gas pipe channel (11) is fixedly connected to the port of the exhaust hole. A second condenser (13) is connected to the gas pipe channel (11). The bottom port of the gas pipe channel (11) is located in the cavity formed by the distillation tank (1) and the fixed cylinder (5). An exhaust pipe (14) is connected to the gas pipe channel (11). Two second fixed brackets (12) are fixedly connected to the other side of the top of the distillation tank (1), and a second condenser (13) is fixedly connected between the two second fixed brackets (12).
2. The methanol-toluene mixture distillation apparatus according to claim 1, characterized in that: The bottom of the distillation tank (1) is connected to a first drain pipe (16), and the first drain pipe (16) is equipped with a first one-way valve. A second drain pipe (15) is connected to one side of the circumferential surface of the distillation tank (1), and a second one-way valve is equipped on the second drain pipe (15).
3. The methanol-toluene mixture distillation apparatus according to claim 1, characterized in that: The side wall of the flask (2) is connected to an inlet pipe (24), and the inlet pipe (24) is installed through the distillation tank (1).
4. The methanol-toluene mixture distillation apparatus according to claim 1, characterized in that: The bottom end of the distillation tank (1) is equipped with an electric motor (17), the output end of the electric motor (17) is connected to a rotating rod (18), and the bottom end of the rotating rod (18) is rotatably mounted on a fixed plate (19).
5. The methanol-toluene mixture distillation apparatus according to claim 1, characterized in that: A fixing plate (19) is installed on the inner wall of the flask (2), and multiple stirring blades (20) are fixed on the outer surface of the rotating rod (18).
6. The methanol-toluene mixture distillation apparatus according to claim 1, characterized in that: A temperature sensor (21) is installed inside the flask (2), and a temperature display (22) is installed on the outer wall of the distillation vessel (1). A wire (23) connects the temperature display (22) and the temperature sensor (21).