Reduced pressure distillation device for chemical industry

Abstract

The utility model discloses a reduced pressure distillation device for chemical engineering, and relates to the field of uniform heating of distillation and cleaning of internal structures, the reduced pressure distillation device comprises a distillation tower, an oil inlet pipe is arranged at the lower end of one side of the distillation tower, an oil outlet pipe is arranged at the upper end of one side of the distillation tower, and an air inlet pipe is arranged at the upper end of the other side of the distillation tower; the uniform heating mechanism is utilized, the contact area of blades and liquid can be reduced through formed round through holes, pressure and impact force generated in the stirring process can be dispersed, energy consumption is reduced, the stirring efficiency is improved, and the liquid can be fully, uniformly and rapidly heated; according to the distillation tower, corrosion and abrasion in the distillation tower can be reduced, the equipment failure rate is reduced, contact between internal parts and liquid can be reduced through cooperation of the hollow columns, the sliding pieces and the fixing blocks, and the service life of the parts is prolonged.

Description

Technical Field

[0001] The present application relates to the field of uniform heating and internal cleaning of distillation, and in particular to a vacuum distillation device for chemical industry. Background Art

[0002] At present, the vacuum distillation apparatus for chemical industry is an important experimental and industrial production equipment, which is particularly suitable for the separation and purification of high-boiling point substances and those compounds that have been thermally decomposed, oxidized or polymerized before reaching the boiling point during atmospheric distillation. The principle of the vacuum distillation apparatus is to reduce the boiling point of the liquid by reducing the pressure in the system, so that the high-boiling point components are vaporized and evaporated at a temperature lower than their atmospheric boiling point, thereby avoiding serious decomposition, oxidation or polymerization.

[0003] Patent No. 202021202056.2 A vacuum distillation device for oil refining and chemical industry, the vacuum distillation device for oil refining and chemical industry comprises a distillation tower and a distillation plate, the distillation plate is fixedly connected to the inner wall of the distillation tower, the interior of the distillation tower is divided into a heating chamber and a distillation chamber by the distillation plate, the distillation chamber is located at the upper end of the heating chamber, and a motor is installed at the top of the distillation tower. In actual use, there are still the following shortcomings:

[0004] 1. During distillation, when stirring the liquid, the contact area between the liquid and the blades is large, which makes the blades bear greater pressure when rotating, increasing energy consumption and reducing stirring efficiency. Due to the low stirring efficiency, in order to achieve the desired stirring effect, a longer stirring time or a higher stirring speed may be required; 2. The internal structure of the distillation tower is tight, and cleaning it will consume a lot of time and labor. In addition, due to the precise internal structure of the distillation tower, the effect of manual cleaning often depends on the skills, experience and concentration of the operator. Manual cleaning is likely to cause damage to the internal structure. Utility Model Content

[0005] In order to improve the uniformity of heating during distillation and the cleanliness of the internal structure, the present application provides a vacuum distillation device for chemical industry.

[0006] The present application provides a chemical vacuum distillation device using the following technical solution:

[0007] A vacuum distillation device for chemical industry, comprising a distillation tower, wherein an oil inlet pipe is provided at the lower end of one side of the distillation tower, an oil outlet pipe is provided at the upper end of one side of the distillation tower, and an air inlet pipe is provided at the upper end of the other side of the distillation tower;

[0008] The uniform heating mechanism comprises a motor fixedly mounted at the bottom of the distillation tower, a transmission column is fixedly connected to the inside of the motor, the transmission column movably runs through the bottom of the distillation tower, a rotating disk is fixedly connected to the outer wall of the transmission column, a hollow column is fixedly connected to the upper surface of the rotating disk, and a fixing block is fixedly connected to the inner wall of the hollow column;

[0009] The cleaning mechanism comprises a sliding column movably penetrating the top of the distillation tower, a vertical sliding groove is provided inside the transmission column, a rotating rod is rotatably connected to the outer wall of the sliding column, and a sliding sheet is rotatably connected to the side of the rotating rod away from the sliding column.

[0010] Preferably, a round through hole is formed through the outer wall of the fixing block.

[0011] Preferably, a heating block is fixedly mounted on a side of the fixing block away from the hollow column.

[0012] Preferably, an auxiliary hole is provided at the bottom of the sliding sheet, a guide block is fixedly connected to the upper surface of the rotating disk, and the sliding sheet is slidably connected to the upper surface of the guide block through the auxiliary hole.

[0013] Preferably, a square groove is provided at the top of the distillation tower, a sliding block is slidably connected inside the square groove, and a fixed bracket is fixedly connected to one side of the sliding block.

[0014] Preferably, one side of the upper end of the distillation tower is rotatably connected to a rotating block, and the other side of the upper end of the distillation tower is fixedly connected to a groove block.

[0015] Preferably, a long hole is formed through the interior of the sliding sheet, and the fixing block is slidably connected inside the long hole.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The uniform heating mechanism can reduce the contact area between the blade and the liquid through the circular through hole, disperse the pressure and impact force generated during the stirring process, reduce energy consumption, enhance the stirring efficiency, make the liquid fully, evenly and quickly heated, and reduce the noise and vibration of the stirrer. By setting the heating block in the middle of the liquid, the liquid can be heated quickly and evenly.

[0018] 2. With the help of the cleaning mechanism, the corrosion and wear inside the distillation tower can be reduced, the equipment failure rate can be reduced, and its service life can be extended. At the same time, the improvement of the cleanliness inside the distillation tower helps to ensure the purity and quality of the product. Residues and impurities may affect the quality and stability of the product.

[0019] 3. Through the coordination of the hollow column, the sliding piece and the fixed block, the contact between the internal parts and the liquid can be reduced, the service life of the parts can be increased, and the equipment can be kept dry and clean, which can ensure its normal operation and thus improve the performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0021] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the present application;

[0022] Figure 3 This is a schematic diagram of the uniform heating mechanism of the present application;

[0023] Figure 4 A schematic diagram of the cleaning mechanism of this application;

[0024] Figure 5 A partial cutaway schematic diagram of the cleaning mechanism of the present application;

[0025] Figure 6 This is a bottom view of the uniform heating mechanism of the present application.

[0026] Reference numerals: 1, distillation tower; 101, oil inlet pipe; 102, oil outlet pipe; 103, air inlet pipe;

[0027] 2. Uniform heating mechanism; 201. Motor; 202. Transmission column; 203. Rotating disk; 204. Hollow column; 205. Fixed block; 206. Round through hole; 207. Heating block;

[0028] 3. Cleaning mechanism; 301. Sliding column; 302. Vertical sliding groove; 303. Rotating rod; 304. Sliding sheet; 305. Guide block; 306. Square groove; 307. Sliding block; 308. Fixed bracket; 309. Rotating block; 310. Groove block; 311. Long hole. DETAILED DESCRIPTION

[0029] The present application is further described in detail below with reference to the accompanying distillation towers 1-6.

[0030] The embodiment of the present application discloses a vacuum distillation device for chemical industry.

[0031] Example 1

[0032] Reference Figure 1A vacuum distillation device for chemical industry comprises a distillation tower 1, wherein an oil inlet pipe 101 is fixedly connected to the lower end of one side of the distillation tower 1, and liquid to be distilled enters from the oil inlet pipe 101. After distillation is completed, the remaining waste liquid that cannot be distilled is also discharged from the oil inlet pipe 101. An oil outlet pipe 102 is fixedly connected to the upper end of one side of the distillation tower 1. After distilling the liquid to be distilled, the distilled front fraction is discharged from the oil outlet pipe 102. An air inlet pipe 103 is fixedly connected to the upper end of the other side of the distillation tower 1, and the air inlet pipe 103 is used to reduce the pressure of the gas inside the distillation tower 1.

[0033] Reference Figure 2 , 3 6. A uniform heating mechanism 2, comprising a motor 201 fixedly mounted at the bottom of the distillation tower 1, wherein the output shaft of the motor 201 is fixedly connected to a transmission column 202, wherein the middle and lower parts of the transmission column 202 are movable and penetrate the bottom of the distillation tower 1, wherein a rotating disk 203 is fixedly connected to the outer wall of the transmission column 202, wherein the rotating disk 203 is located inside the distillation tower 1, wherein the lower end surface of the rotating disk 203 is completely in contact with the bottom surface of the inside of the distillation tower 1 and rotates, wherein a hollow column 204 is fixedly connected to the middle part of the upper surface of the rotating disk 203, wherein a plurality of sliding plates 304 are evenly spaced around the surface of the sliding plates 304. A long hole 311 is provided, and a fixing block 205 is fixedly inserted inside the long hole 311. A plurality of round holes 206 are penetrated inside the fixing block 205. When stirring, the round holes 206 can cause the liquid to generate more turbulence and vortexes, thereby increasing the contact area between the liquid and the stirring blades, and making the mixing between the liquid and the stirrer more uniform. A heating block 207 is fixedly installed on the side of the fixing block 205 away from the hollow column 204. The heating block 207 cooperates with the round holes 206 to ensure that the liquid can be stably and evenly heated inside the distillation tower 1.

[0034] By setting, during distillation, the liquid cannot exceed the height of the sliding plate 304, otherwise the undistilled liquid will flow out from the air inlet pipe 103. The operator turns on the power to start the motor 201 and the heating block 207, and the heating block 207 starts to heat the liquid inside the distillation tower 1. After the motor 201 is started, the transmission column 202 fixedly connected to the axis of the motor 201 starts to rotate. Since the rotating disk 203 is fixedly connected to the outer wall of the transmission column 202, the rotating disk 203 starts to rotate at the same time through the rotation of the transmission column 202. When rotating, 203 will rotate in contact with the bottom of the inner wall of the distillation tower 1. The hollow column 204 and the fixed block 205 fixedly connected to the upper surface of the rotating disk 203 will rotate together with the rotating disk 203. When the fixed block 205 starts to rotate, the liquid inside the distillation tower 1 will be stirred, so that the liquid inside the distillation tower 1 will be heated evenly. The circular through hole 206 opened inside the fixed block 205 will help the fixed block 205 to quickly and evenly heat the liquid inside the distillation tower 1 and can reduce the pressure of the fixed block 205 during stirring.

[0035] The bottom of the distillation tower 1 and the transmission column 202 are sealed by mechanical seals, and the installation method is the existing technology and will not be described in detail.

[0036] The collector ring is installed between the motor 201 and the bottom of the distillation tower 1. The output end of the heating block 207 is electrically connected to the output end of the collector ring of the existing equipment, the fixed end of the collector ring is fixedly connected to the outer shell of the motor 201, the rotating end of the collector ring is fixedly connected to the outer wall of the output shaft of the motor 201, and the wire of the output end of the collector ring passes through the inside of the transmission column 202 and is electrically connected to the output end of the heating block 207, and the collector ring is used to realize power supply to the heating block 207.

[0037] Reference Figure 1 , 2 4, 5, the cleaning mechanism 3 comprises a sliding column 301 penetrating the top of the distillation tower 1, a vertical slide groove 302 is provided at one end of the transmission column 202 away from the rotating disk 203, the sliding column 301 is slidably connected inside the vertical slide groove 302, a plurality of rotating rods 303 are rotatably connected to the outer wall of the sliding column 301, a sliding sheet 304 is rotatably connected to one end of the rotating rod 303 away from the sliding column 301, an auxiliary hole is provided at the bottom of the sliding sheet 304, a guide block 305 is fixedly connected to the upper surface of the rotating disk 203, and the sliding sheet 30 The distillation tower 1 slides on the upper surface of the guide block 305 through the auxiliary hole provided therein. A square groove 306 is provided on one side of the upper surface of the distillation tower 1. A sliding block 307 is slidably connected inside the square groove 306 provided therein. Two fixed brackets 308 are fixedly connected to one side of the sliding block 307 close to the sliding column 301. A rotating block 309 is rotatably connected to one side of the square groove 306 provided therein. A groove block 310 is fixedly connected to the other side of the square groove 306 provided therein. The rotating block 309 is clamped in the groove of the groove block 310.

[0038] By setting, when cleaning the inside of the distillation tower 1, because the liquid entering cannot exceed the height of the sliding piece 304, only the area of ​​the distillation tower 1 that is in contact with the liquid to be distilled is cleaned. The operator manually flips the rotating block 309 so that the rotating block 309 is no longer stuck in the groove block 310. When the rotating block 309 is no longer stuck in the groove block 310, the sliding block 307 inside the sliding square groove 306 is slid so that the fixed bracket 308 is no longer stuck on the sliding column 301. When the fixed bracket 308 is no longer restricted by the sliding block 307, the operator pushes the sliding column 301 downward. When the sliding column 301 slides downward in the vertical sliding groove 302, the rotating rod 303 connected to the outer wall of the sliding column 301 starts to rotate. The rotating rod 303 rotates with one side of the outer wall of the sliding column 301 as the axis. Through the rotation of the rotating rod 303, the sliding piece 304 connected to the other side of the rotating rod 303 starts to rotate. When the sliding piece 304 is unfolded, it is restricted by the bottom guide block 305, so that the sliding piece 304 can only slide outward along the track of the guide block 305. When the sliding column 301 can no longer be pushed downward, the outer wall of the sliding piece 304 will completely fit the inner wall of the distillation tower 1. At this time, the sliding block 307 is slid to make the fixed bracket 308 at the bottom of the sliding block 307 clamp the sliding column 301. When the fixed bracket 308 clamps the sliding column 301, the rotating block 309 is flipped to make the rotating block 309 clamp in the groove of the groove block 310 to fix the sliding block 307. At this time, the operator powers on the motor 201, and the transmission column 202 starts to rotate. Because the transmission column 202, the rotating disk 203 and the guide block 305 are fixedly connected, and the sliding piece 304 is slidably connected above the guide block 305, the sliding piece 304 starts to clean the inside of the distillation tower 1 through the rotation of the transmission column 202.

[0039] By setting, after the cleaning of the inside of the distillation tower 1 is completed, the operator turns off the power to turn off the motor 201, the operator manually flips the rotating block 309 so that the rotating block 309 no longer presses against the sliding block 307, the operator manually slides the sliding block 307 so that the fixed bracket 308 no longer clamps the sliding column 301, when the sliding column 301 is no longer restricted by the fixed bracket 308, the operator manually pulls the sliding column 301 upward, the rotating rod 303 slides through the sliding column 301 in the vertical sliding groove 302, the rotating rod 303 rotates with the outer wall of the sliding column 301 as the axis, and drives the sliding piece 304 to move toward the direction of the sliding column 301, when the sliding column 301 can no longer be pulled upward, the sliding piece 304 at this time is in contact with the hollow column 2 04 is completely fitted, and the fixed block 205 slides in the long hole 311. Through the cooperation between the sliding sheet 304 and the hollow column 204 and the cooperation between the fixed block 205 and the long hole 311, the contact between the parts inside the hollow column 204 and the liquid is avoided, which can well delay the service life of each component. At this time, the operator manually slides the sliding block 307 so that the fixed bracket 308 on the upper side of the sliding block 307 is clamped on the sliding column 301. When the fixed bracket 308 is clamped on the sliding column 301, the operator manually flips the rotating block 309 so that the rotating block 309 is clamped in the groove block 310 and presses against the sliding block 307, so that the sliding block 307 cannot move. At this time, the cleaning is completed and distillation can be performed again.

[0040] The implementation principle of a vacuum distillation device for chemical industry in the embodiment of the present application is as follows: the liquid to be distilled is input from the oil inlet pipe 101 into the interior of the distillation tower 1. When the liquid input is completed and does not exceed the height of the sliding plate 304, the operator decompresses the interior of the distillation tower 1 through the oil outlet pipe 102. After the pressure is reduced to a certain extent, the operator starts to power on the motor 201 and the heating block 207. The heating block 207 after powering on starts to heat the liquid inside the distillation tower 1. By starting the motor 201, the transmission column 202 fixedly connected to the interior of the motor 201 starts to rotate. Because the transmission column 202, the rotating disk 203, the hollow column 204 and the fixed block 205 are fixedly connected together, when the transmission column 202 rotates, the round through hole 206 provided in the fixed block 205 starts to help the fixed block 205 to stir the liquid inside the distillation tower 1, so that the liquid inside the distillation tower 1 is evenly heated, and the distilled front fraction will be discharged from the air inlet pipe 102. 103 is discharged. After the distillation is completed, the operator turns off the power to stop the motor 201 and the heating block 207. The liquid that can no longer be distilled is re-entered into the oil pipe 101 for discharge. After the liquid is discharged, the operator manually flips the rotating block 309 so that the rotating block 309 no longer presses against the sliding block 307. The sliding block 307 is slid so that the fixed bracket 308 no longer clamps the sliding column 301. The operator pushes the sliding column 301 downward so that the sliding piece 304 is attached to the inner wall of the distillation tower 1. When the sliding column 301 can no longer be pushed downward, the operator slides the sliding block 307 so that the fixed bracket 308 at the bottom end of one side of the sliding block 307 clamps the sliding column 301. The operator manually flips the rotating block 309 so that the rotating block 309 is clamped in the groove of the groove block 310. At this time, the operator turns on the power to start the motor 201. The sliding piece 304 rotates with the guide block 305 fixedly connected to the upper surface of the rotating disk 203, so that the inner wall of the distillation tower 1 can be wiped and cleaned.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum distillation device for chemical industry, comprising a distillation tower (1), wherein an oil inlet pipe (101) is provided at the lower end of one side of the distillation tower (1), an oil outlet pipe (102) is provided at the upper end of one side of the distillation tower (1), and an air inlet pipe (103) is provided at the upper end of the other side of the distillation tower (1), characterized in that: The uniform heating mechanism (2) comprises a motor (201) fixedly mounted on the bottom of the distillation tower (1), a transmission column (202) fixedly connected to the inside of the motor (201), the transmission column (202) movably passing through the bottom of the distillation tower (1), a rotating disk (203) fixedly connected to the outer wall of the transmission column (202), a hollow column (204) fixedly connected to the upper surface of the rotating disk (203), and a fixing block (205) fixedly connected to the inner wall of the hollow column (204); The cleaning mechanism (3) comprises a sliding column (301) movably penetrating the top of the distillation tower (1), a vertical sliding groove (302) is provided inside the transmission column (202), a rotating rod (303) is rotatably connected to the outer wall of the sliding column (301), and a sliding sheet (304) is rotatably connected to the side of the rotating rod (303) away from the sliding column (301).

2. A chemical vacuum distillation apparatus according to claim 1, characterized in that: A round through hole (206) is formed through the outer wall of the fixing block (205).

3. A vacuum distillation apparatus for chemical industry according to claim 2, characterized in that: A heating block (207) is fixedly mounted on a side of the fixing block (205) away from the hollow column (204).

4. A vacuum distillation apparatus for chemical industry according to claim 1, characterized in that: An auxiliary hole is provided at the bottom of the sliding sheet (304), a guide block (305) is fixedly connected to the upper surface of the rotating disk (203), and the sliding sheet (304) is slidably connected to the upper surface of the guide block (305) through the auxiliary hole.

5. A vacuum distillation apparatus for chemical industry according to claim 4, characterized in that: A square groove (306) is provided at the top of the distillation tower (1), a sliding block (307) is slidably connected inside the square groove (306), and a fixed bracket (308) is fixedly connected to one side of the sliding block (307).

6. A vacuum distillation apparatus for chemical industry according to claim 5, characterized in that: One side of the upper end of the distillation tower (1) is rotatably connected to a rotating block (309), and the other side of the upper end of the distillation tower (1) is fixedly connected to a groove block (310).

7. A vacuum distillation apparatus for chemical industry according to claim 4, characterized in that: The sliding sheet (304) is provided with a long hole (311) extending therethrough, and the fixing block (205) is slidably connected inside the long hole (311).

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