Continuous rectification device capable of preventing material blockage

Abstract

The utility model relates to the technical field of rectification processing devices, and discloses a continuous rectification device capable of preventing material blockage, which comprises a tower body, a plurality of tower plates are fixedly connected in the tower body in a staggered manner, the left side surface of the tower body is fixedly connected with a feeding pipe, the left side of the feeding pipe is provided with a preheating cylinder, and the left side of the preheating cylinder is provided with a feeding pipe. An electric heating column is fixedly connected into the preheating cylinder, a plurality of through holes are formed in the left side surface of the electric heating column, spiral flow guide columns are fixedly connected into the through holes, and a coarse filter screen and a fine filter screen are arranged on the left side and the right side of the preheating cylinder correspondingly. According to the utility model, the preheating cylinder, the electric heating column, the through hole, the spiral flow guide column, the magnetic cylinder, the coarse filter screen, the fine filter screen, the threaded cylinder and the flow guide hopper are matched, so that materials can be filtered and intercepted in three stages, impurities are prevented from entering the tower body to block a tower plate or a reboiler, and the materials can be filtered and intercepted through electric heating and turbulence disturbance. And crystallization caused by local low temperature or deposition caused by overhigh viscosity is avoided.

Description

Technical Field

[0001] This utility model relates to the field of distillation processing equipment technology, and in particular to a continuous distillation device for preventing material blockage. Background Technology

[0002] A continuous distillation unit is a thermal separation device used to separate homogeneous liquid mixtures. It utilizes the differences in the volatility of the components in the mixture to achieve multiple countercurrent contacts and mass exchange between the gas and liquid phases in the distillation column, thereby separating the mixture into components of different purities. It is a combination of evaporation and condensation unit operations.

[0003] Existing continuous distillation units continuously and stably feed the liquid feed into the distillation column, typically in the middle section. At the bottom of the column, a reboiler heats the liquid, causing partial vaporization. The resulting vapor flows upwards along the column. Simultaneously, a condenser at the top of the column condenses some of the rising vapor. The condensed liquid flows back into the column. The gas and liquid phases exchange heat and mass on the trays or packing within the column. As the reboiler at the bottom heats the liquid, the lighter components gradually vaporize and rise. After condensation at the top, a product rich in lighter components is obtained. Meanwhile, the reflux liquid comes into contact with the rising vapor as it descends, causing some of the heavier components in the vapor to condense into the liquid. This process gradually separates components with different boiling point ranges.

[0004] In actual use, existing continuous distillation devices may contain easily crystallizing substances in the material. When the temperature is low, crystals will precipitate in the material. If the initial temperature of the material is low when it enters the device, the precipitated crystals and impurities carried by the material will accumulate on the trays, which will lead to tray blockage and affect distillation efficiency. Therefore, a continuous distillation device to prevent material blockage is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a continuous distillation device to prevent material blockage, aiming to improve the problem in the prior art where if the material temperature is low when entering the device, it is easy to precipitate crystals, leading to blockage of the trays.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a continuous distillation device for preventing material blockage, comprising a column body, wherein several trays are fixedly connected in an alternating pattern inside the column body, a reboiler is connected to the lower left side of the column body via a circulation pipe, a condenser is connected to the upper right side of the column body via a circulation pipe, a feed pipe is fixedly connected to the left side of the column body, a preheating cylinder is provided on the left side of the feed pipe, an electric heating column is fixedly connected inside the preheating cylinder, several through holes are opened on the left side of the electric heating column, a spiral guide column is fixedly connected inside the through holes, magnetic cylinders are fixedly connected to both ends of the preheating cylinder, a coarse filter screen and a fine filter screen are respectively provided on the left and right sides of the preheating cylinder, threaded cylinders are threaded to both ends of the preheating cylinder, a guide bucket is threaded to the end of the threaded cylinder away from the center of the preheating cylinder, and a conveying pipe is fixedly connected to the left end of the guide bucket located on the left side of the preheating cylinder.

[0007] As a further description of the above technical solution:

[0008] The right end of the guide bucket located on the right side of the preheating cylinder is fixedly connected to the left end of the feed pipe.

[0009] As a further description of the above technical solution:

[0010] The sizes of the coarse and fine filter screens are both adapted to the size of the threaded cylinder.

[0011] As a further description of the above technical solution:

[0012] The magnetic cylinder is fitted inside the threaded cylinder.

[0013] As a further description of the above technical solution:

[0014] The diameter of the through hole is larger than the diameter of the filter pores of the fine filter screen.

[0015] As a further description of the above technical solution:

[0016] Both the coarse and fine filter screens have an inner rubber ring fixedly connected to the side away from the preheating cylinder.

[0017] As a further description of the above technical solution:

[0018] An outer rubber ring is fixedly connected to the surface of the threaded cylinder near the preheating cylinder, and fixing rings are fixedly connected to both the left and right sides of the outer wall of the preheating cylinder.

[0019] As a further description of the above technical solution:

[0020] The outer rubber ring is fitted on the outside of the preheating cylinder.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by combining the preheating cylinder, electric heating column, through hole, spiral guide column, magnetic cylinder, coarse filter screen, fine filter screen, threaded cylinder and guide bucket, the material can be filtered and intercepted in three stages, respectively intercepting large particles, small particles and magnetic metal impurities, preventing them from entering the tower body and clogging the tower plates or reboiler. Furthermore, through electric heating and turbulent disturbance, the preheating time of the material can be extended, the temperature uniformity of the material can be improved, and the deposition caused by crystallization or excessive viscosity due to local low temperature can be avoided.

[0023] 2. In this utility model, the combination of the inner rubber ring, the outer rubber ring and the fixing ring can provide double sealing protection for the left and right ends of the preheating cylinder, preventing material from leaking from the gaps on the left and right sides of the preheating cylinder and causing environmental pollution. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall continuous distillation apparatus for preventing material blockage proposed in this utility model.

[0025] Figure 2 This is a schematic cross-sectional view of the front part of a continuous distillation apparatus for preventing material blockage according to the present invention.

[0026] Figure 3 This is a schematic diagram of the preheating cylinder of a continuous distillation apparatus for preventing material blockage, as proposed in this utility model.

[0027] Figure 4 This is a schematic cross-sectional view of the front part of the preheating cylinder of a continuous distillation apparatus for preventing material blockage according to the present invention.

[0028] Figure 5 This is a schematic diagram of the heating column and spiral guide column of a continuous distillation apparatus for preventing material blockage proposed in this utility model.

[0029] Legend:

[0030] 1. Tower body; 2. Tower tray; 3. Reboiler; 4. Condenser; 5. Feed pipe; 6. Preheating cylinder; 7. Heating column; 8. Through hole; 9. Spiral guide column; 10. Magnetic cylinder; 11. Coarse filter screen; 12. Fine filter screen; 13. Threaded cylinder; 14. Guide bucket; 15. Conveying pipe; 16. Inner rubber ring; 17. Outer rubber ring; 18. Fixing ring. Detailed Implementation

[0031] 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 protection scope of the present utility model.

[0032] Reference Figures 1-2 This utility model provides an embodiment of a continuous distillation apparatus for preventing material blockage, comprising a column body 1, with several trays 2 fixedly connected in an alternating pattern inside the column body 1. Filter holes are provided on the trays 2. A reboiler 3 is connected to the lower left side of the column body 1 via a circulation pipe, and a condenser 4 is connected to the upper right side of the column body 1 via a circulation pipe. A discharge pipe is fixedly connected to the right side of the condenser 4, and a feed pipe 5 is fixedly connected to the left side surface of the column body 1. After the material enters the column body 1 through the feed pipe 5, it flows downward through the trays 2. After flowing to the bottom of the column, it enters the reboiler 3 to generate steam. The steam returns to the column body 1 through the circulation pipe and flows counterclockwise with part of the liquid refluxed after condensation in the condenser 4 at the top of the column, performing heat exchange and mass transfer to separate the mixture. The separated gas enters the condenser 4 and is discharged through the discharge pipe. The above structure is a prior art in this field and will not be described in detail here.

[0033] Reference Figures 3-5 A preheating cylinder 6 is located on the left side of the feed pipe 5. An electric heating column 7 is fixedly connected inside the preheating cylinder 6. The electric heating column 7 generates heat when energized. Several through holes 8 are formed on the left surface of the electric heating column 7. Material entering the preheating cylinder 6 flows to the right through the through holes 8. A spiral guide column 9 is fixedly connected inside the through holes 8. The spiral guide column 9 extends the distance the material flows inside the through holes 8, thereby extending the heating time. Simultaneously, the material flows in a spiral motion as it passes through the spiral guide column 9, ensuring sufficient contact between the material and the inner wall of the through holes 8 and the surface of the spiral guide column 9, thus achieving uniform heating and avoiding uneven heating. Insufficient heating in the central part leads to low temperature and crystal precipitation. Magnetic cylinders 10 are fixedly connected to both ends of the preheating cylinder 6. The magnetic cylinders 10 can adsorb and filter magnetic metal impurities in the passing material. Coarse filter screen 11 and fine filter screen 12 are respectively set on the left and right sides of the preheating cylinder 6. The diameter of the through hole 8 is larger than the diameter of the filter hole of the fine filter screen 12, which can prevent impurities smaller than the coarse filter screen 11 from clogging when passing through the through hole 8, thus affecting the flow of material. The coarse filter screen 11 and fine filter screen 12 can perform coarse and fine filtration of the material respectively, and treat coarse and fine impurities in the material respectively.

[0034] Both ends of the preheating cylinder 6 are threadedly connected to threaded cylinders 13. Magnetic cylinders 10 are fitted inside the threaded cylinders 13. The sizes of the coarse filter 11 and fine filter 12 are adapted to the size of the threaded cylinder 13, allowing both to quickly enter the threaded cylinder 13. A guide bucket 14 is threadedly connected to one end of the threaded cylinder 13 furthest from the center of the preheating cylinder 6. When the guide bucket 14 needs to be disassembled, simply twist the preheating cylinder 6, causing it to rotate relative to the guide buckets 14 on both sides, thus allowing the threaded cylinder 10 to be removed. 3. The quick unscrew mechanism facilitates disassembly, allowing for easy removal and cleaning of the coarse filter screen 11 and the fine filter screen 12. The right end of the guide hopper 14 located on the right side of the preheating cylinder 6 is fixedly connected to the left end of the feed pipe 5. The left end of the guide hopper 14 located on the left side of the preheating cylinder 6 is fixedly connected to the conveying pipe 15. The material can flow through the conveying pipe 15 into the guide hopper 14 on the left side, then into the preheating cylinder 6 for preheating, and then flow through the guide hopper 14 on the right side into the feed pipe 5. Finally, the material enters the tower body 1 through the feed pipe 5 for distillation.

[0035] Reference Figures 3-4 Both the coarse filter 11 and the fine filter 12 have inner rubber rings 16 fixedly connected to their sides away from the preheating cylinder 6. When the two guide buckets 14 are installed on the left and right sides of the preheating cylinder 6 respectively, the inner rubber rings 16 on both sides will be squeezed, causing them to deform and fill the gaps between the coarse filter 11 and the fine filter 12 and the inner wall of the guide bucket 14. This prevents the coarse filter 11 and the fine filter 12 from making hard contact and wearing with the guide bucket 14, which would affect their service life. At the same time, it can also clean the gaps between the coarse filter 11 and the fine filter 12 and the inner wall of the guide bucket 14. The gap between the filter screen 12 and the inner wall of the threaded cylinder 13 is filled to improve the sealing effect and prevent leakage. An outer rubber ring 17 is fixedly connected to the surface of the threaded cylinder 13 near the preheating cylinder 6. The outer rubber ring 17 is sleeved on the outside of the preheating cylinder 6. Fixing rings 18 are fixedly connected to both sides of the outer wall of the preheating cylinder 6. When the threaded cylinder 13 is installed on the outside of the preheating cylinder 6, the threaded cylinder 13 will cooperate with the fixing rings 18 to squeeze the outer rubber ring 17, further improving the sealing performance and preventing material leakage.

[0036] Working principle: The material enters the left guide hopper 14 through the conveying pipe 15. After being intercepted by the coarse filter screen 11, it flows into the preheating cylinder 6. When the material flows through the left end of the preheating cylinder 6, the magnetic cylinder 10 on the left side will adsorb and remove the magnetic metal impurities in the material. After entering the preheating cylinder 6, the material continues to flow to the right through the through hole 8. During this process, the electric heating column 7 is energized to generate heat, which will preheat the material passing through the through hole 8. At the same time, it is forced to flow in a spiral shape by the spiral guide column, which prolongs the residence time and improves the temperature uniformity, so as to achieve uniform heating and avoid uneven heating in the center. The preheated material is intercepted by the fine filter screen 12 on the right side or crystals are precipitated. Finally, it enters the feed pipe 5 through the right guide hopper 14.

[0037] The material enters the tower body 1 through the feed pipe 5 and comes into countercurrent contact with the rising vapor on the staggered tower plates 2, achieving the separation of light component vaporization and heavy component liquefaction. The heavy component at the bottom of the tower enters the reboiler 3 through the left circulation pipe. After heating, part of it vaporizes and returns to the tower body 1 to provide rising vapor. The light component vapor at the top of the tower enters the condenser 4 through the right circulation pipe. After condensing into liquid, part of it flows back to the top of the tower, and the rest is collected as product and discharged through the discharge pipe.

[0038] When the coarse filter 11 and fine filter 12 become clogged over a long period, affecting filtration efficiency, or when the magnetic cylinder 10 adsorbs a large amount of magnetic metal impurities, the threaded cylinder 13 can be unscrewed directly, and the guide bucket 14 can be removed from the left and right sides of the preheating cylinder 6. After releasing the restriction on the coarse filter 11 and fine filter 12, the coarse filter 11 and fine filter 12 can be removed directly. Then, the impurities filtered out inside the preheating cylinder 6 can be cleaned. The operation is simple. During installation, the coarse filter 11 and fine filter 12 will cooperate with the guide buckets 14 on both sides to compress and deform the inner rubber ring 16. At the same time, the threaded cylinder 13 will cooperate with the fixing ring 18 to compress and deform the outer rubber ring 17, which can seal and protect the left and right ends of the preheating cylinder 6 to prevent leakage.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A continuous distillation apparatus for preventing material blockage, comprising a column body (1), characterized in that: The tower body (1) has several trays (2) fixedly connected in an alternating pattern inside. A reboiler (3) is connected to the lower left side of the tower body (1) via a circulation pipe. A condenser (4) is connected to the upper right side of the tower body (1) via a circulation pipe. A feed pipe (5) is fixedly connected to the left side of the tower body (1). A preheating cylinder (6) is provided on the left side of the feed pipe (5). An electric heating column (7) is fixedly connected inside the preheating cylinder (6). Several through holes (8) are opened on the left side of the electric heating column (7). 8) is internally fixedly connected to a spiral guide column (9). Both ends of the preheating cylinder (6) are fixedly connected to a magnetic cylinder (10). The left and right sides of the preheating cylinder (6) are respectively provided with a coarse filter screen (11) and a fine filter screen (12). Both ends of the preheating cylinder (6) are threadedly connected to a threaded cylinder (13). The end of the threaded cylinder (13) away from the center of the preheating cylinder (6) is threadedly connected to a guide bucket (14). The left end of the guide bucket (14) located on the left side of the preheating cylinder (6) is fixedly connected to a conveying pipe (15).

2. The continuous distillation apparatus for preventing material blockage according to claim 1, characterized in that: The right end of the guide bucket (14) located on the right side of the preheating cylinder (6) is fixedly connected to the left end of the feed pipe (5).

3. The continuous distillation apparatus for preventing material blockage according to claim 1, characterized in that: The sizes of the coarse filter (11) and the fine filter (12) are both adapted to the size of the threaded cylinder (13).

4. The continuous distillation apparatus for preventing material blockage according to claim 1, characterized in that: The magnetic cylinder (10) is fitted inside the threaded cylinder (13).

5. A continuous distillation apparatus for preventing material blockage according to claim 1, characterized in that: The diameter of the through hole (8) is larger than the diameter of the filter hole of the fine filter screen (12).

6. A continuous distillation apparatus for preventing material blockage according to claim 1, characterized in that: Both the coarse filter (11) and the fine filter (12) are fixedly connected to an inner rubber ring (16) on the side away from the preheating cylinder (6).

7. A continuous distillation apparatus for preventing material blockage according to claim 1, characterized in that: An outer rubber ring (17) is fixedly connected to the surface of the threaded cylinder (13) near the preheating cylinder (6), and a fixing ring (18) is fixedly connected to both the left and right sides of the outer wall of the preheating cylinder (6).

8. A continuous distillation apparatus for preventing material blockage according to claim 7, characterized in that: The outer rubber ring (17) is fitted on the outside of the preheating cylinder (6).

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