Methanol separation device

Abstract

The utility model discloses a methanol separation device which comprises a methanol distillation separation tower, a condenser is arranged on the right side of the methanol distillation separation tower, and a preheating impurity removal structure is arranged on the left side of the methanol distillation separation tower. The preheating impurity removal structure comprises a preheating tank, a steam discharge pipe, a support, a stirring assembly, a temperature sensor, a liquid extraction pump, a liquid discharge pipe, a heater and a liquid extraction pipe, the stirring assembly is installed on the outer surface of the lower end of the preheating tank, and the stirring assembly comprises a protective shell, a motor, a driving gear, a driven gear, a rotating shaft, a spiral blade, a driven shaft and a stirrer. According to the methanol separation device, mixed liquid is heated to the temperature slightly lower than the boiling point of methanol, low-boiling-point impurities are evaporated, impurities with the boiling point lower than that of methanol are removed, and after the liquid is preheated, the heating time of the liquid in a methanol distillation separation tower can be shortened, and the treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of methanol separation, specifically to a methanol separation device. BACKGROUND

[0002] When distilling and purifying methanol through a methanol distillation separation tower, the boiling point of methanol is about 64.7°C under atmospheric pressure (1 atm).

[0003] However, when purifying methanol, impurities with a boiling point lower than methanol will be mixed in the condensate during methanol extraction, reducing the quality of processing.

[0004] Therefore, we propose a methanol separation device. UTILITY MODEL CONTENT

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a methanol separation device which can remove impurities with a boiling point lower than methanol and improve subsequent processing efficiency, effectively solving the problems in the background art.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model takes the technical scheme that a methanol separation device comprises a methanol distillation separation tower, a condenser is arranged on the right side of the methanol distillation separation tower, a preheating and impurity removal structure is arranged on the left side of the methanol distillation separation tower, the preheating and impurity removal structure comprises a preheating tank, a steam discharge pipe, a support, a stirring assembly, a temperature sensor, a liquid pump, a liquid discharge pipe, a heater and a liquid suction pipe, the stirring assembly is installed on the lower end outer surface of the preheating tank, the stirring assembly comprises a protective shell, a motor, a driving gear, a driven gear, a rotating shaft, a spiral blade, a driven shaft and a stirrer, the liquid pump is fixedly installed on the lower part of the outer surface of one side of the preheating tank, the preheating tank is of a double-layer structure, the heater is installed in the interlayer of the preheating tank, and the back of the preheating tank is provided with a feeding port.

[0009] Preferably, the liquid suction pipe is fixedly installed on one end of the outer surface of the liquid pump, the liquid discharge pipe is connected between the liquid pump and the methanol distillation separation tower, and one end of the liquid suction pipe extends into one side of the bottom of the inner cavity of the preheating tank.

[0010] Preferably, the temperature sensor is fixedly installed on the middle part of the front end outer surface of the preheating tank, one end of the temperature sensor extends into one side of the inner cavity of the preheating tank, the support is fixedly installed on the lower end outer surface of the preheating tank, and the steam discharge pipe is located on the upper end outer surface of the preheating tank.

[0011] Preferably, the protective shell is fixedly installed on the lower outer surface of the preheating tank, and there are two sets of driven gears, driven shafts and agitators. Both the driven gear and the driving gear are located inside the protective shell, and the motor is fixedly installed in the middle of the lower outer surface of the protective shell.

[0012] Preferably, the rotating shaft is connected to the upper outer surface of the motor, the two sets of driven shafts are located on the left and right sides of the rotating shaft, the stirrer and the spiral blade are both located inside the preheating tank, the stirrer is fixedly installed on the upper outer wall of the driven shaft, the spiral blade is fixedly installed on the upper outer wall of the rotating shaft, the driving gear is fixedly installed on the bottom outer wall of the rotating shaft, and the driven gear is fixedly installed on the bottom outer wall of the driven shaft.

[0013] Preferably, sealed bearings are provided between the rotating shaft, the driven shaft, the protective shell, and the preheating tank. The rotating shaft and the driven shaft are rotatably connected to the protective shell and the preheating tank through the sealed bearings. A coupling is provided between the rotating shaft and the motor. The lower outer surface of the rotating shaft is fixedly connected to the upper outer surface of the output shaft in the motor through the coupling.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a methanol separation device, which has the following advantages:

[0016] 1. A methanol separation device heats a mixed liquid to a temperature slightly below the boiling point of methanol, causing low-boiling-point impurities to evaporate and removing impurities with boiling points lower than methanol.

[0017] 2. This methanol separation device can reduce the heating time of the liquid in the methanol distillation separation tower after preheating, thereby improving the processing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a methanol separation device according to the present invention.

[0019] Figure 2 This is a side view of the preheating and impurity removal structure in a methanol separation device according to the present invention.

[0020] Figure 3 This is a schematic diagram of the preheating and impurity removal structure in a methanol separation device according to the present invention.

[0021] Figure 4 This is a side cross-sectional view of the preheating and impurity removal structure in a methanol separation device according to the present invention.

[0022] In the diagram: 1. Methanol distillation separation tower; 2. Condenser; 3. Preheating and impurity removal structure; 4. Preheating tank; 5. Steam exhaust pipe; 6. Support frame; 7. Stirring assembly; 8. Temperature sensor; 9. Liquid pump; 10. Drain pipe; 11. Heater; 12. Liquid extraction pipe; 13. Protective shell; 14. Motor; 15. Driven gear; 16. Driven gear; 17. Rotating shaft; 18. Spiral blade; 19. Driven shaft; 20. Stirrer. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] This embodiment is a methanol separation device.

[0025] like Figures 1-4 As shown, the methanol distillation separation tower 1 is provided. A condenser 2 is provided on the right side of the methanol distillation separation tower 1, and a preheating and impurity removal structure 3 is provided on the left side of the methanol distillation separation tower 1. The preheating and impurity removal structure 3 includes a preheating tank 4, a steam discharge pipe 5, a support 6, a stirring assembly 7, a temperature sensor 8, a liquid pump 9, a discharge pipe 10, a heater 11, and a liquid extraction pipe 12. The stirring assembly 7 is installed on the lower outer surface of the preheating tank 4. The stirring assembly 7 includes a protective shell 13, a motor 14, a driving gear 15, a driven gear 16, a rotating shaft 17, a spiral blade 18, a driven shaft 19, and a stirrer 20. The liquid pump 9 is fixedly installed on the lower part of one side of the outer surface of the preheating tank 4. The preheating tank 4 has a double-layer structure. The heater 11 is installed in the interlayer of the preheating tank 4. A feed inlet is provided on the back of the preheating tank 4.

[0026] A liquid extraction pipe 12 is fixedly installed on the outer surface of one end of the liquid extraction pump 9. A liquid discharge pipe 10 is connected between the liquid extraction pump 9 and the methanol distillation separation tower 1. One end of the liquid extraction pipe 12 extends into one side of the bottom of the preheating tank 4. A temperature sensor 8 is fixedly installed in the middle of the outer surface of the front end of the preheating tank 4, and one end of the temperature sensor 8 extends into one side of the inner cavity of the preheating tank 4. A bracket 6 is fixedly installed on the lower outer surface of the preheating tank 4. A steam discharge pipe 5 is located on the upper outer surface of the preheating tank 4. A protective shell 13 is fixedly installed on the lower outer surface of the preheating tank 4. There are two sets of driven gears 16, driven shafts 19, and agitators 20. Both driven gears 16 and driving gears 15 are located inside the protective shell 13. A motor 14 is fixedly installed in the middle of the lower outer surface of the protective shell 13. A rotating shaft 17 is connected to the motor. On the upper outer surface of the 14, two sets of driven shafts 19 are located on the left and right sides of the rotating shaft 17. The stirrer 20 and the spiral blade 18 are both located inside the preheating tank 4. The stirrer 20 is fixedly installed on the upper outer wall of the driven shaft 19, the spiral blade 18 is fixedly installed on the upper outer wall of the rotating shaft 17, the driving gear 15 is fixedly installed on the bottom outer wall of the rotating shaft 17, and the driven gear 16 is fixedly installed on the bottom outer wall of the driven shaft 19. Sealed bearings are provided between the rotating shaft 17, the driven shaft 19, the protective shell 13, and the preheating tank 4. The rotating shaft 17 and the driven shaft 19 are rotatably connected to the protective shell 13 and the preheating tank 4 through the sealed bearings. A coupling is provided between the rotating shaft 17 and the motor 14. The lower outer surface of the rotating shaft 17 is fixedly connected to the upper outer surface of the output shaft in the motor 14 through the coupling.

[0027] It should be noted that this utility model is a methanol separation device. The methanol distillation separation tower 1 and condenser 2 described herein are existing technologies and can be readily understood by those skilled in the art; therefore, further details are omitted. The preheating and impurity removal structure 3 adds the material into the preheating tank 4 through the feed inlet on the back of the preheating tank 4. The liquid is heated by the heater 11 in the jacket of the preheating tank 4. During the preheating stage, the temperature is typically controlled at 50-60°C, slightly below the boiling point of methanol, to evaporate low-boiling-point impurities (such as formaldehyde and formic acid) while preventing premature evaporation of methanol. The preheating process removes impurities and increases the liquid content, thus reducing the liquid content. The heating time in the methanol distillation separation tower 1 is increased to improve processing efficiency. The operation of motor 14 drives the rotating shaft 17 to rotate, which in turn drives the drive gear 15 to rotate. The drive gear 15 drives the driven gears 16 on both sides to rotate, which in turn drives the driven shaft 19 to rotate. The rotating shaft 17 drives the spiral blade 18 to rotate, and the driven shaft 19 drives the agitator 20 to rotate. The spiral blade 18 agitates the material, and the agitator 20 stirs the material, improving the uniformity of heating, the quality of preheating, and the quality of impurity removal. After preheating, the liquid inside the preheating and impurity removal structure 3 is sent to the methanol distillation separation tower 1 by the liquid pump 9.

[0028] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] 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 separation device, comprising a methanol distillation separation tower (1), wherein a condenser (2) is provided on the right side of the methanol distillation separation tower (1), characterized in that: The methanol distillation separation tower (1) is provided with a preheating and impurity removal structure (3) on the left side. The preheating and impurity removal structure (3) includes a preheating tank (4), a steam discharge pipe (5), a support (6), a stirring assembly (7), a temperature sensor (8), a liquid pump (9), a discharge pipe (10), a heater (11), and a liquid extraction pipe (12). The stirring assembly (7) is installed on the lower outer surface of the preheating tank (4). The stirring assembly (7) includes a protective shell (13), a motor (14), a drive gear (15), a driven gear (16), a rotating shaft (17), a spiral blade (18), a driven shaft (19), and a stirrer (20). The liquid pump (9) is fixedly installed on the lower part of the outer surface of one side of the preheating tank (4). The preheating tank (4) is a double-layer structure. The heater (11) is installed in the interlayer of the preheating tank (4). The back of the preheating tank (4) is provided with a feed inlet.

2. The methanol separation device according to claim 1, characterized in that: The liquid extraction pipe (12) is fixedly installed on the outer surface of one end of the liquid extraction pump (9), and the liquid discharge pipe (10) is connected between the liquid extraction pump (9) and the methanol distillation separation tower (1). One end of the liquid extraction pipe (12) extends into one side of the bottom of the preheating tank (4).

3. The methanol separation device according to claim 2, characterized in that: The temperature sensor (8) is fixedly installed in the middle of the outer surface of the front end of the preheating tank (4), and one end of the temperature sensor (8) extends into one side of the inner cavity of the preheating tank (4). The bracket (6) is fixedly installed on the lower outer surface of the preheating tank (4), and the steam discharge pipe (5) is located on the upper outer surface of the preheating tank (4).

4. A methanol separation device according to claim 3, characterized in that: The protective shell (13) is fixedly installed on the lower outer surface of the preheating tank (4). The number of driven gear (16), driven shaft (19) and stirrer (20) are two sets each. The driven gear (16) and the driving gear (15) are both located inside the protective shell (13). The motor (14) is fixedly installed in the middle of the lower outer surface of the protective shell (13).

5. A methanol separation device according to claim 4, characterized in that: The rotating shaft (17) is connected to the upper outer surface of the motor (14). Two sets of driven shafts (19) are located on the left and right sides of the rotating shaft (17). The stirrer (20) and the spiral blade (18) are both located inside the preheating tank (4). The stirrer (20) is fixedly installed on the upper outer wall of the driven shaft (19). The spiral blade (18) is fixedly installed on the upper outer wall of the rotating shaft (17). The driving gear (15) is fixedly installed on the bottom outer wall of the rotating shaft (17). The driven gear (16) is fixedly installed on the bottom outer wall of the driven shaft (19).

6. A methanol separation device according to claim 5, characterized in that: Sealed bearings are provided between the rotating shaft (17), the driven shaft (19), the protective shell (13), and the preheating tank (4). The rotating shaft (17) and the driven shaft (19) are rotatably connected to the protective shell (13) and the preheating tank (4) through the sealed bearings. A coupling is provided between the rotating shaft (17) and the motor (14). The lower outer surface of the rotating shaft (17) is fixedly connected to the upper outer surface of the output shaft in the motor (14) through the coupling.

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