Condensing device for producing and processing methylal

Abstract

The utility model discloses a condensing device for producing and processing methylal, which comprises a processing tank, the top of the processing tank extends into the processing tank and is rotatably provided with a condensing component, the outer end of the condensing component is connected with an air inlet pipe, and the air inlet pipe is rotatably and hermetically communicated with the condensing component through a sealing sleeve. The condensation assembly can condense steam in the condensation assembly and improve the temperature uniformity of cooling liquid in the tank at the same time, a collecting pipe is rotationally arranged at the lower end of the treatment tank in a sealed mode and used for being connected with a methylal liquid collecting device, and a liquid storage box containing the cooling liquid is arranged beside the treatment tank. The tops and the bottoms of the treatment tank and the liquid storage tank are respectively connected through pipelines to form a cooling liquid circulating loop, a circulating pump is arranged on the pipeline positioned at the top, and a valve is arranged on the pipeline positioned at the bottom.

Description

Technical Field

[0001] The utility model relates to the technical field of methylal production, in particular to a methylal production and processing condensing device. Background Art

[0002] Methylal is a colorless, transparent liquid with a slight odor. It can be mixed with a variety of reagents. It is an important chemical raw material for synthesizing polyoxymethylene and is widely used in electronics, transportation, construction, medicine, pesticides, rubber and other industries.

[0003] After the distillation of methylal is completed, the steam obtained after the distillation needs to be condensed to collect the methylal. For example, Chinese patent publication number CN217560389U discloses a condensing device for methylal production and processing, which condenses the steam through a fixed air intake pipe, a condensing box and a cooling plate. As the steam is condensed, the temperature of the coolant around the air intake pipe on the side of the steam inlet end gradually increases, causing a temperature difference in the coolant at different positions in the condensing box, resulting in a decrease in the thermal conductivity of the air intake pipe and a decrease in the condensation effect of the device.

[0004] Therefore, it is necessary to provide a methylal production and processing condensation device to solve the problems mentioned in the above background technology. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a condensing device for the production and processing of methylal, comprising: a processing tank, a condensing assembly is rotatably provided at the top of the processing tank extending into the interior thereof, an air inlet pipe is connected to the outer end of the condensing assembly, the air inlet pipe is rotatably sealed and connected to the condensing assembly through a sealing sleeve, the condensing assembly can improve the temperature uniformity of the coolant in the tank while condensing the steam therein, a collecting pipe is rotatably sealed at the lower end of the processing tank, the collecting pipe is used to connect to the methylal liquid collecting device, a liquid storage tank filled with coolant is provided on the side of the processing tank, the top and bottom of the processing tank and the liquid storage tank are respectively connected by pipes to form a coolant circulation circuit, a circulating pump is provided on the pipe at the top, and a valve is provided on the pipe at the bottom.

[0006] As a preferred technical solution of the utility model, the condensation component includes:

[0007] A mounting frame, wherein the mounting frame is fixedly mounted on the top of the treatment tank, a motor is arranged on the upper end of the mounting frame, an output end of the motor is connected to a hollow rotating shaft via a coupling, a plurality of air inlet holes are opened along the circumference of the rotating shaft located at the sealing sleeve, the rotating shaft extends into the interior of the treatment tank, a condenser is connected and installed at the lower end of the rotating shaft, the condenser is a corrugated tubular structure, and an air outlet end of the condenser is connected and arranged with the collecting pipe.

[0008] As a preferred technical solution of the utility model, a diverter plate is arranged between the rotating shaft and the condenser tube, the diverter plate is coaxially connected to the rotating shaft, a plurality of condenser tubes are evenly connected circumferentially at the lower end of the diverter plate, the lower ends of the condenser tubes are connected through a connecting plate, a collector cover is arranged at the lower end of the connecting plate, the liquid outlet of the collector cover is connected to the collecting tube, and the condensate in the condenser tube flows into the collecting tube after being collected in the collector cover.

[0009] As a preferred technical solution of the utility model, the collecting cover is a funnel-shaped structure.

[0010] As a preferred technical solution of the utility model, the sealing sleeve includes:

[0011] A sleeve, one side of the sleeve is provided with a circular hole connected to the air inlet pipe, the upper and lower ends of the sleeve are penetrated with mounting holes, the sleeve is rotatably sleeved on the rotating shaft through the mounting holes, an annular air inlet cavity is formed between the sleeve and the rotating shaft, and a plurality of sealing rings are axially embedded on the inner wall of the mounting hole.

[0012] As a preferred technical solution of the utility model, a reflux pipe is provided on the methylal liquid collecting device, the reflux pipe is connected to the air inlet pipe, and a one-way valve and a pressure relief valve are provided on the reflux pipe.

[0013] As a preferred technical solution of the utility model, a liquid level monitoring device is provided in the processing tank, which can feed back the liquid level in the processing tank to the outside in real time.

[0014] Compared with the prior art, the utility model provides a condensing device for producing and processing methylal, which has the following beneficial effects:

[0015] In the utility model, the sealing sleeve and the condensing component are arranged in a rotating seal, so that the condensing tube is in a constant moving state in the processing tank, the coolant is fully stirred, the local temperature in the tank is avoided, the coolant is prevented from having a temperature difference, and the condensation effect of the device on formic acid aldehyde vapor is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a condensation device for producing and processing methylal;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of a treatment tank of a condensation device for producing and processing methylal;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of a sealing sleeve of a condensing device for producing and processing methylal;

[0019] In the figure: 1. treatment tank; 2. liquid storage tank; 21. circulation pump; 22. valve; 23. pipeline; 3. air inlet pipe; 31. sealing sleeve; 311. casing; 312. sealing ring; 4. condensation assembly; 41. mounting frame; 42. motor; 43. rotating shaft; 44. diverter plate; 45. condenser pipe; 46. connecting plate; 47. collector cover; 431. air inlet hole; 5. collecting pipe. DETAILED DESCRIPTION

[0020] See also Figure 1-3 The utility model provides a condensing device for producing and processing methylal, comprising:

[0021] A treatment tank 1 is provided with a condensation assembly 4 extending from the top of the treatment tank 1 and rotatably arranged therein, an air inlet pipe 3 is connected to the outer end of the condensation assembly 4, the air inlet pipe 3 is rotatably sealed and connected to the condensation assembly 4 through a sealing sleeve 31, the condensation assembly 4 can improve the temperature uniformity of the coolant in the tank while condensing the steam therein, a collecting pipe 5 is rotatably sealed and arranged at the lower end of the treatment tank 1, the collecting pipe 5 is used to connect to a methylal liquid collecting device, a liquid storage tank 2 filled with coolant is arranged beside the treatment tank 1, the top and bottom of the treatment tank 1 and the liquid storage tank 2 are respectively connected by a pipe 23 to form a coolant circulation circuit, a circulating pump 21 is arranged on the pipe 23 at the top, and a valve 22 is arranged on the pipe 23 at the bottom.

[0022] It should be explained that, when working, the air inlet pipe 3 is connected to the air outlet end of the formic acid aldehyde distillation tower, and then the circulation pump 21 is started and the valve 22 is opened, so that the coolant in the treatment tank 1 circulates along the pipeline 23 between the treatment tank 1 and the liquid storage tank 2 to ensure the refrigeration effect of the coolant. At the same time, the condensation component 4 is controlled to rotate, and the coolant in the treatment tank 1 is stirred while the gas therein is condensed, so as to improve the uniformity of the temperature distribution of the coolant at different positions in the treatment tank 1, and at the same time avoid the fixed position of the condensation component 4 causing a large temperature difference in the coolant, which affects the condensation effect of the device on acetal.

[0023] In this embodiment, the condensation component 4 includes:

[0024] The mounting frame 41 is fixedly mounted on the top of the treatment tank 1. A motor 42 is arranged on the upper end of the mounting frame 41. The output end of the motor 42 is connected to a hollow rotating shaft 43 through a coupling. The rotating shaft 43 is located at the sealing sleeve 31 and is provided with a plurality of air inlet holes 431 along its circumference. The rotating shaft 43 extends into the interior of the treatment tank 1. A condenser 45 is installed at the lower end of the rotating shaft 43. The condenser 45 is a corrugated tubular structure. The air outlet end of the condenser 45 is connected to the collecting pipe 5.

[0025] That is to say, when the steam enters the condensation component 4, the start motor 42 controls the condenser 45 to rotate, stirs the coolant in the processing tank 1, and improves the temperature uniformity of the coolant at different positions in the processing tank 1. At the same time, the setting of the corrugated condenser 45 can increase its contact area with the coolant and improve the condensation effect.

[0026] In this embodiment, a diverter plate 44 is arranged between the rotating shaft 43 and the condenser tube 45. The diverter plate 44 is coaxially connected to the rotating shaft 43. A plurality of condenser tubes 45 are evenly connected and arranged at the lower end of the diverter plate 44 in a circumferential direction. The lower ends of the condenser tubes 45 are connected through a connecting plate 46. A collector cover 47 is arranged at the lower end of the connecting plate 46. The liquid outlet of the collector cover 47 is connected to the collecting tube 5. The condensate in the condenser tube 45 is collected in the collector cover 47 and flows into the collecting tube 5.

[0027] It needs to be explained that by setting up the diverter plate 44, the connecting plate 46 and the collecting cover 47, multiple condensers 45 are fixedly installed at the same time to improve the condensation efficiency of the condensation assembly 4. At the same time, the setting of multiple groups of condensers 45 can stir the coolant more fully, thereby improving the overall uniformity of the coolant temperature in the processing tank 1.

[0028] In this embodiment, the collector 47 is a funnel-shaped structure.

[0029] In this embodiment, the sealing sleeve 31 includes:

[0030] The sleeve 311 has a circular hole on one side thereof which is connected to the air inlet pipe 3. The upper and lower ends of the sleeve 311 are penetrated with mounting holes. The sleeve 311 is rotatably mounted on the rotating shaft 43 through the mounting holes. An annular air inlet cavity is formed between the sleeve 311 and the rotating shaft 43. A plurality of sealing rings 312 are axially embedded on the inner wall of the mounting hole.

[0031] The sealing ring 312 has good wear resistance, corrosion resistance and high temperature resistance.

[0032] In this embodiment, the methylal liquid collecting device is provided with a reflux pipe, the reflux pipe is connected with the air inlet pipe 3, and a one-way valve and a pressure relief valve are provided on the reflux pipe. The condensation and collection effect of methylal in the steam is improved by refluxing the steam.

[0033] In this embodiment, a liquid level monitoring device is provided in the processing tank 1, which can feed back the liquid level in the processing tank 1 to the outside in real time.

[0034] During specific implementation, the air inlet pipe is connected to the air outlet end of the formic acid-aldehyde distillation tower, and then the circulation pump is started and the valve is opened, so that the coolant in the treatment tank circulates along the pipeline between the treatment tank and the liquid storage tank to ensure the refrigeration effect of the coolant. At the same time, the condensation component is controlled to rotate to stir the coolant in the treatment tank while condensing the gas therein, so as to avoid temperature differences in the coolant at different positions, which would lead to reduced condensation effect.

[0035] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A condensing device for producing and processing methylal, characterized in that: include: A treatment tank (1) is provided, wherein a condensation assembly (4) is rotatably arranged at the top of the treatment tank (1) and extends into the interior thereof; an air inlet pipe (3) is connected to the outer end of the condensation assembly (4); the air inlet pipe (3) is rotatably sealed and connected to the condensation assembly (4) through a sealing sleeve (31); the condensation assembly (4) can improve the temperature uniformity of the coolant in the tank while condensing the steam therein; a collecting pipe (5) is rotatably sealed at the lower end of the treatment tank (1); the collecting pipe (5) is used to connect to a methylal liquid collecting device; a liquid storage tank (2) containing coolant is arranged on the side of the treatment tank (1); the top and bottom of the treatment tank (1) and the liquid storage tank (2) are connected respectively by a pipe (23) to form a coolant circulation loop; a circulating pump (21) is arranged on the pipe (23) at the top, and a valve (22) is arranged on the pipe (23) at the bottom.

2. A methylal production and processing condensing device according to claim 1, characterized in that: The condensation component (4) comprises: A mounting frame (41) is fixedly mounted on the top of the treatment tank (1). A motor (42) is arranged on the upper end of the mounting frame (41). The output end of the motor (42) is connected to a hollow rotating shaft (43) via a coupling. The rotating shaft (43) is located at the sealing sleeve (31) and is provided with a plurality of air inlet holes (431) along its circumference. The rotating shaft (43) extends into the interior of the treatment tank (1). A condenser (45) is connected and installed at the lower end of the rotating shaft (43). The condenser (45) is a corrugated tubular structure. The air outlet end of the condenser (45) is connected and arranged with the collecting pipe (5).

3. A methylal production and processing condensation device according to claim 2, characterized in that: A diverter plate (44) is arranged between the rotating shaft (43) and the condenser tube (45), and the diverter plate (44) is coaxially connected to the rotating shaft (43). A plurality of condenser tubes (45) are evenly connected and arranged at the lower end of the diverter plate (44). The lower ends of the condenser tubes (45) are connected through a connecting plate (46). A collector cover (47) is arranged at the lower end of the connecting plate (46). The liquid outlet of the collector cover (47) is connected to the collecting tube (5). The condensate in the condenser tube (45) is collected at the collector cover (47) and then flows into the collecting tube (5).

4. A methylal production and processing condensation device according to claim 3, characterized in that: The collecting cover (47) is a funnel-shaped structure.

5. A methylal production and processing condensation device according to claim 2, characterized in that: The sealing sleeve (31) comprises: A sleeve (311), one side of the sleeve (311) is provided with a circular hole connected to the air inlet pipe (3), the upper and lower ends of the sleeve (311) are penetrated with mounting holes, the sleeve (311) is rotatably mounted on the rotating shaft (43) through the mounting holes, an annular air inlet cavity is formed between the sleeve (311) and the rotating shaft (43), and a plurality of sealing rings (312) are axially embedded on the inner wall of the mounting hole.

6. A methylal production and processing condensation device according to claim 1, characterized in that: The methylal liquid collecting device is provided with a reflux pipe, the reflux pipe is communicated with the air inlet pipe (3), and the reflux pipe is provided with a one-way valve and a pressure relief valve.

7. A methylal production and processing condensation device according to claim 1, characterized in that: The processing tank (1) is provided with a liquid level monitoring device, which can feed back the liquid level in the processing tank (1) to the outside in real time.

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