Methanol rectifying tower

Abstract

The utility model relates to the field of methanol rectification, in particular to a methanol rectifying tower which comprises a bottom table and a rectifying tower body, the rectifying tower body is installed on the upper end face of the bottom table, a connecting pipe is installed on the right portion of the outer side wall of the rectifying tower body, a reaction cavity is installed at the other end of the connecting pipe, and an annular cavity is installed on the outer side wall of the reaction cavity. The upper end face of the annular cavity is provided with a water inlet, the upper end face of the water inlet is provided with a water cavity, the bottom of the reaction cavity is provided with a discharging port, the outer side wall of the discharging port is provided with a first valve, the upper end face of the bottom table is provided with a heating disc, and the end face of the inner side of the heating disc is provided with a rectifying tower body. According to the methanol gas liquefying device, methanol gas can be liquefied, the liquefying speed of the methanol gas is effectively increased, a temperature sensor structure is adopted, the water temperature in the annular cavity can be monitored, water changing treatment can be conducted on the annular cavity in time, and the liquefying effect of the methanol gas is ensured.

Description

Technical Field

[0001] The utility model relates to the field of methanol distillation, in particular to a methanol distillation tower. Background Art

[0002] Methanol is an important chemical product. In the methanol production process, the distillation residue discharged from the bottom of the distillation tower, which is about 20% of the methanol output, is usually called methanol wastewater. If the methanol wastewater is directly discharged into the water body, it will cause serious pollution and damage to the environment. The commonly used methanol treatment method is vaporization. The vaporization method uses the more common waste heat boiler in production as a heat source based on the physical property of the low boiling point of alcohols to vaporize the low-boiling point organic matter in the wastewater.

[0003] A Chinese patent discloses a methanol distillation tower (authorization announcement number CN 211659295 U). The patented technology can solve the problems of fewer distribution points and uneven liquid dispersion in traditional methanol distillation towers, resulting in low distillation efficiency and low recovery rate.

[0004] After the existing methanol gas is gasified, it lacks a condensation structure, which makes the formaldehyde liquid liquefaction efficiency low. After using cold water for condensation, the water temperature is likely to rise, resulting in poor condensation effect, and the gas pressure may be unstable during the gasification process, which may lead to safety accidents. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a methanol distillation tower, comprising a base and a distillation tower body, the distillation tower body is installed on the upper end surface of the base, a connecting pipe is installed on the right part of the outer side wall of the distillation tower body, a reaction chamber is installed on the other end of the connecting pipe, an annular cavity is installed on the outer side wall of the reaction chamber, a water inlet is installed on the upper end surface of the annular cavity, a water cavity is installed on the upper end surface of the water inlet, a discharge port is installed at the bottom of the reaction chamber, a first valve is installed on the outer side wall of the discharge port, a heating plate is installed on the upper end surface of the base, and the distillation tower body is installed on the inner end surface of the heating plate.

[0006] Preferably, an adjusting motor is arranged on the outer side wall of the distillation tower body, a supporting rod is installed at the output end of the adjusting motor, the supporting rod is arranged in the distillation tower body, and a plurality of stirring rods are installed on the outer side wall of the supporting rod.

[0007] Preferably: the temperature sensor is symmetrically installed on the inner wall of the annular cavity, the water outlet pipe is symmetrically installed on the outer wall of the annular cavity, and the second valve is installed on the outer wall of the water outlet pipe.

[0008] Preferably, an air bag is installed on the right end surface of the reaction chamber by screw connection.

[0009] Preferably, a fixed pipe is installed at the bottom of the distillation tower body, and a third valve is installed on the outer side wall of the fixed pipe.

[0010] Preferably: a recovery chamber is arranged below the water outlet pipe, and a plurality of placement grooves are provided on the upper end surface of the recovery chamber.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model adopts an annular cavity structure, in which cold water is filled, so that the methanol gas can be liquefied and its liquefaction rate can be effectively accelerated. A temperature sensor structure is also adopted to monitor the water temperature inside the annular cavity, so that the annular cavity can be replaced with water in time to ensure the liquefaction effect of the methanol gas.

[0013] 2. The utility model adopts an airbag structure, so that the internal air pressure can be kept stable, avoiding the risk of furnace explosion caused by unstable internal air pressure, and improving the safety performance of industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of a methanol distillation tower structure provided in an embodiment of the present application;

[0015] Figure 2 This is a right side view of the structure of a methanol distillation tower provided in an embodiment of the present application;

[0016] Figure 3 This is a sectional front view of a methanol distillation tower provided in an embodiment of the present application;

[0017] Figure 4 It is a sectional right view of a methanol distillation tower provided in an embodiment of the present application;

[0018] In the figure: 1. base; 2. distillation tower body; 11. connecting pipe; 12. reaction chamber; 13. annular chamber; 14. water inlet; 15. water chamber; 16. discharge port; 17. heating plate; 18. regulating motor; 19. support rod; 21. stirring rod; 22. temperature sensor; 23. water outlet pipe; 24. air bag; 25. fixing pipe; 26. recovery chamber. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0020] See also Figures 1 to 4In this embodiment, a methanol distillation tower is provided, including a base 1 and a distillation tower body 2, the distillation tower body 2 is installed on the upper end surface of the base 1, a connecting pipe 11 is installed on the right side of the outer wall of the distillation tower body 2, a reaction chamber 12 is installed on the other end of the connecting pipe 11, an annular chamber 13 is installed on the outer wall of the reaction chamber 12, a water inlet 14 is installed on the upper end surface of the annular chamber 13, a water chamber 15 is installed on the upper end surface of the water inlet 14, a discharge port 16 is installed at the bottom of the reaction chamber 12, and the outer side of the discharge port 16 is provided with a discharge port 16. A first valve is installed on the wall, a heating plate 17 is installed on the upper end surface of the base 1, and a distillation tower body 2 is installed on the inner end surface of the heating plate 17. When working, the waste liquid is put into the distillation tower body 2, and the heating plate 17 is started to heat the distillation tower body 2. The methanol gas enters the reaction chamber 12 through the connecting pipe 11. The water chamber 15 is filled with cold water. The cold water enters the annular chamber 13 through the water inlet 14. The annular chamber 13 liquefies the methanol gas, effectively accelerating its liquefaction rate.

[0021] An adjusting motor 18 is arranged on the outer wall of the distillation tower body 2, and a support rod 19 is installed at the output end of the adjusting motor 18. The support rod 19 is arranged in the distillation tower body 2, and a plurality of stirring rods 21 are installed on the outer wall of the support rod 19. When working, the adjusting motor 18 is started to drive the support rod 19 to rotate, and the stirring rod 21 stirs the waste liquid inside the distillation tower body 2, thereby further improving the gasification rate of the waste liquid and allowing the methanol gas to be completely gasified.

[0022] The inner wall of the annular cavity 13 is symmetrically installed with a temperature sensor 22, the outer wall of the annular cavity 13 is symmetrically installed with a water outlet pipe 23, and the outer wall of the water outlet pipe 23 is installed with a second valve. During operation, after a long period of operation, the water temperature inside the annular cavity 13 rises, resulting in poor condensation effect. At this time, the temperature sensor 22 monitors the water temperature inside the annular cavity 13. When the temperature rises, the second valve opens to discharge the water in the annular cavity 13, so that the annular cavity 13 can be replaced with water in time to ensure the liquefaction effect of methanol gas.

[0023] The right end face of the reaction chamber 12 is screwed with an air bag 24. When the internal air pressure is too high during operation, the air bag 24 expands to keep the internal air pressure stable, thereby avoiding the risk of furnace explosion due to excessive internal air pressure and improving the safety performance of industrial production.

[0024] A fixed pipe 25 is installed at the bottom of the distillation tower body 2, and a third valve is installed on the outer wall of the fixed pipe 25. During operation, when the distillation tower body 2 is cleaned, water washing is usually adopted. After the water washing is completed, the third valve is opened to discharge impurities through the fixed pipe 25.

[0025] A recovery chamber 26 is arranged below the water outlet pipe 23, and a plurality of placement grooves are provided on the upper end surface of the recovery chamber 26. During operation, liquefied formaldehyde liquid enters the middle cavity of the recovery chamber 26 through the discharge port 16. When the water in the annular cavity 13 is replaced, the water falls into the front and rear cavities of the recovery chamber 26, so that the water can be used again after being statically cooled, thereby improving the utilization efficiency of water resources.

[0026] During specific operation, the waste liquid is placed in the distillation tower body 2, and the heating plate 17 is started to heat the distillation tower body 2. The methanol gas enters the reaction chamber 12 through the connecting pipe 11. The water chamber 15 is filled with cold water, and the cold water enters the annular chamber 13 through the water inlet 14. The annular chamber 13 liquefies the methanol gas, effectively accelerating its liquefaction rate. The temperature sensor 22 monitors the water temperature inside the annular chamber 13. When the temperature rises, the second valve opens to discharge the water in the annular chamber 13, so that the annular chamber 13 can be replaced with water in time to ensure the liquefaction effect of the methanol gas.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A methanol distillation tower, comprising a base (1) and a distillation tower body (2), characterized in that: A distillation tower body (2) is mounted on the upper end surface of the base platform (1), a connecting pipe (11) is mounted on the right part of the outer wall of the distillation tower body (2), a reaction chamber (12) is mounted on the other end of the connecting pipe (11), an annular chamber (13) is mounted on the outer wall of the reaction chamber (12), a water inlet (14) is mounted on the upper end surface of the annular chamber (13), a water chamber (15) is mounted on the upper end surface of the water inlet (14), a discharge port (16) is mounted at the bottom of the reaction chamber (12), a first valve is mounted on the outer wall of the discharge port (16), a heating plate (17) is mounted on the upper end surface of the base platform (1), and the distillation tower body (2) is mounted on the inner end surface of the heating plate (17).

2. A methanol distillation tower according to claim 1, characterized in that The outer wall of the distillation tower body (2) is provided with an adjusting motor (18), the output end of the adjusting motor (18) is provided with a supporting rod (19), the supporting rod (19) is provided in the distillation tower body (2), and the outer wall of the supporting rod (19) is provided with a plurality of stirring rods (21).

3. A methanol distillation tower according to claim 1, characterized in that: The inner wall of the annular cavity (13) is symmetrically mounted with a temperature sensor (22), the outer wall of the annular cavity (13) is symmetrically mounted with a water outlet pipe (23), and the outer wall of the water outlet pipe (23) is mounted with a second valve.

4. A methanol distillation tower according to claim 1, characterized in that: An air bag (24) is installed on the right end surface of the reaction chamber (12) by means of screw connection.

5. A methanol distillation tower according to claim 1, characterized in that: A fixed pipe (25) is installed at the bottom of the distillation tower body (2), and a third valve is installed on the outer side wall of the fixed pipe (25).

6. A methanol distillation tower according to claim 3, characterized in that: A recovery chamber (26) is arranged below the water outlet pipe (23), and a plurality of placement grooves are provided on the upper end surface of the recovery chamber (26).

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