Sub-boiling distillation device for high-purity hydrochloric acid

Abstract

The utility model relates to the technical field of hydrochloric acid distillation, in particular to a sub-boiling distillation device for high-purity hydrochloric acid, which comprises a distillation box, a sealing cover plate fixedly connected to the upper end of the distillation box, an inverted cone on the lower surface of the sealing cover plate, a support fixedly connected to the inner wall of the distillation box, and a receiving hopper fixedly connected to the middle of the upper surface of the support. The lower side of the support frame is fixedly connected with a heater, the front side of the distillation box body is provided with a preheating module, the preheating module comprises a preheating cylinder, a liquid inlet pipeline, a liquid outlet pipeline, a connecting block and a heating rod, the inner bottom wall of the distillation box body is fixedly connected with a liquid inlet coil pipe, and the surface of the liquid inlet coil pipe is provided with a plurality of groups of liquid inlet holes; the heating rod preheats liquid in the preheating cylinder, and the liquid is uniformly injected into the distillation box body through the liquid inlet holes in the surface of the liquid inlet coil pipe and is uniformly mixed with liquid in the distillation box body, so that the mixed liquid is at a relatively high temperature and can quickly reach a sub-boiling state for evaporation and condensation, and the evaporation and condensation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrochloric acid distillation, in particular to a sub-boiling distillation device for high-purity hydrochloric acid. Background Art

[0002] Sub-boiling distillation is an important method for preparing hydrochloric acid. It uses the principle of thermal radiation to maintain the liquid temperature below the boiling point for evaporation and condensation to produce high-purity hydrochloric acid without impurities.

[0003] Among them, announcement number CN216366683U discloses an ultra-clean high-purity reagent sub-boiling distillation device, including a distiller and a heater located in the distiller, connecting parts are arranged at both ends of the heater, and a supporting part is connected to the end of the connecting part away from the heater. A first regulating chamber, an evaporation chamber and a second regulating chamber are sequentially arranged at the bottom of the distiller, and the bottoms of the first regulating chamber and the second regulating chamber are both connected to the evaporation chamber. The heater is located above the evaporation chamber, and two supporting parts are respectively located in the first regulating chamber and the second regulating chamber, and the supporting parts are suspended above the liquid surface of the first regulating chamber / the second regulating chamber to support the heater.

[0004] The device can adjust the position of the heater in real time during the distillation process, so that the heat of the heater can be effectively utilized, and can also avoid the problem of reduced distillation rate in the later stage of distillation. During use, when there is less liquid in the evaporation chamber, the liquid to be purified is added to the first regulating chamber and the second regulating chamber through the second liquid inlet. Although it can effectively reduce the fluctuation of the liquid in the evaporation chamber, due to the small amount of liquid in the evaporation chamber, the temperature of the liquid in the evaporation chamber will drop rapidly after the liquid is added, and it will take a long time for the liquid in the evaporation chamber to be in a sub-boiling state again. Steam will not be generated for a long time, resulting in reduced distillation efficiency.

[0005] Therefore, it is necessary to invent a sub-boiling distillation device for high-purity hydrochloric acid to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a sub-boiling distillation device for high-purity hydrochloric acid, so as to solve the problem that after the liquid is added, the temperature of the liquid in the evaporation chamber will drop rapidly, it takes a long time to make the liquid in the evaporation chamber reach the sub-boiling state again, and it will take a long time to generate steam, resulting in reduced distillation efficiency.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sub-boiling distillation device of high-purity hydrochloric acid, comprising a distillation box, a sealing cover plate is fixedly connected to the upper end of the distillation box, the lower surface of the sealing cover plate is an inverted cone, the inner wall of the distillation box is fixedly connected to a support frame, a receiving hopper is fixedly connected to the middle position of the upper surface of the support frame, a heater is fixedly connected to the lower side of the support frame, a preheating module is arranged on the front side of the distillation box, the preheating module comprises a preheating cylinder, a liquid inlet pipe, a liquid outlet pipe, a connecting block and a heating rod, the inner bottom wall of the distillation box is fixedly connected to a liquid inlet coil, and a plurality of groups of liquid inlet holes are provided on the surface of the liquid inlet coil.

[0008] By adopting the above technical scheme, the heater evaporates the liquid inside the distillation box, the steam rises to the lower surface of the sealing cover plate and condenses, and the condensed liquid slides along the side wall of the inverted cone to the inside of the receiving hopper. In addition, when the inside of the distillation box is replenished with liquid, the liquid is transported to the inside of the preheating cylinder through the liquid inlet pipe, and the heating rod preheats the liquid to increase the liquid temperature. The liquid is then transported to the inside of the liquid inlet coil through the liquid outlet pipe, and then evenly injected into the inside of the distillation box through multiple groups of liquid inlet holes, so that the mixed liquid is evenly mixed with the liquid inside the box, avoiding the liquid temperature inside the box being too low, so that the added liquid can quickly reach a sub-boiling state and evaporate and condense.

[0009] Optionally, a drain pipe is fixedly connected to the lower end of the receiving hopper, and the lower end of the drain pipe passes through the side wall of the distillation box and is connected to the material holding container.

[0010] By adopting the above technical solution, the drain pipe discharges the condensed liquid to the outside into the container for storage.

[0011] Optionally, a first connecting tube is fixedly connected to the left lower end of the preheating cylinder, and the left end of the first connecting tube is fixedly connected to the liquid inlet pipe.

[0012] Optionally, a temperature sensor is fixedly connected to the surface of the first connecting pipe.

[0013] By adopting the above technical solution, the temperature sensor is used to detect the temperature of the incoming liquid.

[0014] Optionally, a second connecting pipe is fixedly connected to the upper end of the right side of the preheating cylinder, and the right end of the second connecting pipe is fixedly connected to the upper end of the liquid outlet pipe.

[0015] Optionally, the connecting block is fixedly connected to the upper end of the preheating cylinder, the lower end of the connecting block extends to the interior of the preheating cylinder, and the upper end of the heating rod is fixedly connected to the lower end of the connecting block.

[0016] By adopting the above technical solution, the heating rod preheats the liquid flowing through the preheating cylinder.

[0017] Optionally, third connecting pipes are fixedly connected to the lower ends of the left and right sides of the distillation box, and transmission pipes are fixedly connected to the inner ends of two groups of the third connecting pipes. The two groups of transmission pipes are respectively fixedly connected to the left and right sides of the liquid inlet coil.

[0018] Optionally, one end of the outer side of the two groups of the third connecting tubes is fixedly connected to a shunt pipe, and the middle part of the shunt pipe is fixedly connected to the lower end of the liquid outlet pipe.

[0019] By adopting the above technical solution, the liquid outlet pipe transports the liquid to the inside of the diversion pipe, the diversion pipe diverts the liquid to the inside of the transmission pipes on both sides, and the transmission pipe inputs the liquid into the inside of the liquid inlet coil from the left and right sides at the same time, so that the liquid enters the inside of the distillation box evenly from multiple groups of liquid inlet holes.

[0020] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0021] 1. The utility model transports the liquid to the inside of the preheating cylinder through the liquid inlet pipe, and the heating rod preheats the liquid to increase the liquid temperature, and then transports the liquid to the inside of the distillation box through the liquid outlet pipe, so that the added liquid is mixed with the liquid inside the distillation box, so as to avoid the liquid temperature inside the box being too low, so that the mixed liquid can quickly reach a sub-boiling state, and evaporate and condense, thereby improving the evaporation and condensation efficiency of the liquid, and solving the problem that after the liquid is added, the temperature of the liquid inside the evaporation chamber will drop rapidly, and it will take a long time for the liquid in the evaporation chamber to be in a sub-boiling state again, and it will take a long time for steam to be unable to be generated, resulting in reduced distillation efficiency;

[0022] 2. The utility model simultaneously inputs the liquid into the liquid inlet coil from the left and right sides through the transmission pipeline, so that the liquid enters the interior of the distillation box evenly from multiple groups of liquid inlet holes, thereby increasing the liquid inlet speed, so that the liquid can be evenly distributed inside the distillation box, and the added liquid is evenly mixed with the original liquid, so that the temperature of the mixed liquid is relatively uniform, which is convenient for quickly heating it to a sub-boiling state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the external structure of the preheating cylinder of the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the preheating cylinder of the utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the distillation box of the utility model;

[0027] Figure 5 This is a schematic diagram of the liquid inlet coil structure of the utility model.

[0028] Description of reference numerals:

[0029] 1. Distillation box; 11. Sealing cover plate; 12. Support frame; 13. Material receiving hopper; 14. Liquid discharge pipe; 15. Heater; 2. Preheating cylinder; 21. First connecting pipe; 22. Liquid inlet pipe; 23. Temperature sensor; 24. Second connecting pipe; 25. Liquid outlet pipe; 26. Connecting block; 27. Heating rod; 3. Liquid inlet coil; 31. Transmission pipe; 32. Liquid inlet hole; 33. Third connecting pipe; 34. Diversion pipe. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The utility model provides Figure 1 and Figure 4 A sub-boiling distillation device for high-purity hydrochloric acid is shown, comprising a distillation box 1, a sealing cover plate 11 is fixedly connected to the upper end of the distillation box 1, the lower surface of the sealing cover plate 11 is an inverted cone, a support frame 12 is fixedly connected to the inner wall of the distillation box 1, a material receiving hopper 13 is fixedly connected to the middle position of the upper surface of the support frame 12, a discharge pipe 14 is fixedly connected to the lower end of the material receiving hopper 13, the lower end of the discharge pipe 14 passes through the side wall of the distillation box 1 and is connected to the material container, and a heater 15 is fixedly connected to the lower side of the support frame 12.

[0032] During use, the heater 15 evaporates the liquid inside the distillation box 1, and the steam rises to the lower surface of the sealing cover plate 11 to condense. The condensed liquid slides along the side wall of the inverted cone to the inside of the receiving hopper 13, and then the drain pipe 14 discharges the condensed liquid to the outside into the container for storage.

[0033] See also Figure 2 and Figure 3 A preheating module is provided on the front side of the distillation box 1, and the preheating module includes a preheating cylinder 2, a liquid inlet pipe 22, a liquid outlet pipe 25, a connecting block 26 and a heating rod 27. A first connecting pipe 21 is fixedly connected to the lower left end of the preheating cylinder 2, the left end of the first connecting pipe 21 is fixedly connected to the liquid inlet pipe 22, a temperature sensor 23 is fixedly connected to the surface of the first connecting pipe 21, a second connecting pipe 24 is fixedly connected to the upper right end of the preheating cylinder 2, the right end of the second connecting pipe 24 is fixedly connected to the upper end of the liquid outlet pipe 25, a connecting block 26 is fixedly connected to the upper end of the preheating cylinder 2, the lower end of the connecting block 26 extends to the interior of the preheating cylinder 2, and the upper end of the heating rod 27 is fixedly connected to the lower end of the connecting block 26.

[0034] In addition, when replenishing the interior of the distillation box 1, the liquid is transported to the interior of the preheating cylinder 2 through the liquid inlet pipe 22. When the liquid passes through the first connecting pipe 21, the temperature sensor 23 detects the liquid temperature and then adjusts the temperature of the heating rod 27. The heating rod 27 then preheats the liquid flowing through the interior of the preheating cylinder 2 to increase the liquid temperature. The liquid is then input into the interior of the distillation box 1 through the liquid outlet pipe 25, thereby increasing the amount of liquid inside the distillation box 1 and maintaining the liquid inside the distillation box 1 at a relatively high temperature.

[0035] See also Figure 4 and Figure 5 The inner bottom wall of the distillation box 1 is fixedly connected with a liquid inlet coil 3, and a plurality of liquid inlet holes 32 are provided on the surface of the liquid inlet coil 3. The lower ends of the left and right sides of the distillation box 1 are fixedly connected with third connecting pipes 33, and the inner ends of the two groups of third connecting pipes 33 are fixedly connected with transmission pipes 31. The two groups of transmission pipes 31 are respectively fixedly connected with the left and right sides of the liquid inlet coil 3, and the outer ends of the two groups of third connecting pipes 33 are fixedly connected with a diversion pipe 34, and the middle part of the diversion pipe 34 is fixedly connected with the lower end of the liquid outlet pipe 25.

[0036] At the same time, the liquid outlet pipe 25 transports the liquid to the inside of the diversion pipe 34, the diversion pipe 34 diverts the liquid to the inside of the transmission pipes 31 on both sides, and the transmission pipe 31 simultaneously inputs the liquid into the inside of the liquid inlet coil 3 from the left and right sides, so that the liquid enters the inside of the distillation box 1 evenly from the multiple groups of liquid inlet holes 32, thereby increasing the liquid inlet speed, so that the liquid can be evenly distributed in the inside of the distillation box 1, so that the added liquid is evenly mixed with the original liquid, and the temperature of the mixed liquid is relatively uniform, which is convenient for quickly heating it to a sub-boiling state.

[0037] The working principle of the utility model is as follows: the liquid is transported to the inside of the preheating cylinder 2 through the liquid inlet pipe 22, the heating rod 27 preheats the liquid to increase the temperature of the liquid, and then the liquid is transported to the inside of the liquid inlet coil 3 through the liquid outlet pipe 25, and is evenly injected into the inside of the distillation box 1 through multiple groups of liquid inlet holes 32, so that the heated liquid is evenly mixed with the liquid inside the distillation box 1, so that the liquid inside the distillation box 1 is at a higher temperature, so that the mixed liquid can quickly reach a sub-boiling state, and evaporate and condense, thereby improving the evaporation and condensation efficiency.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A sub-boiling distillation device for high-purity hydrochloric acid, comprising a distillation box (1), characterized in that: The upper end of the distillation box (1) is fixedly connected to a sealing cover plate (11), the lower surface of the sealing cover plate (11) is an inverted cone, the inner wall of the distillation box (1) is fixedly connected to a support frame (12), the middle position of the upper surface of the support frame (12) is fixedly connected to a receiving hopper (13), the lower side of the support frame (12) is fixedly connected to a heater (15), the front side of the distillation box (1) is provided with a preheating module, the preheating module comprises a preheating cylinder (2), a liquid inlet pipe (22), a liquid outlet pipe (25), a connecting block (26) and a heating rod (27), the inner bottom wall of the distillation box (1) is fixedly connected to a liquid inlet coil (3), and the surface of the liquid inlet coil (3) is provided with a plurality of groups of liquid inlet holes (32).

2. A sub-boiling distillation apparatus for high-purity hydrochloric acid according to claim 1, characterized in that: The lower end of the receiving hopper (13) is fixedly connected to a drain pipe (14), and the lower end of the drain pipe (14) passes through the side wall of the distillation box (1) and is connected to the material container.

3. A sub-boiling distillation apparatus for high-purity hydrochloric acid according to claim 1, characterized in that: A first connecting pipe (21) is fixedly connected to the lower left end of the preheating cylinder (2), and the left end of the first connecting pipe (21) is fixedly connected to a liquid inlet pipe (22).

4. A sub-boiling distillation apparatus for high-purity hydrochloric acid according to claim 3, characterized in that: A temperature sensor (23) is fixedly connected to the surface of the first connecting pipe (21).

5. A sub-boiling distillation apparatus for high-purity hydrochloric acid according to claim 1, characterized in that: A second connecting pipe (24) is fixedly connected to the upper right end of the preheating cylinder (2), and the right end of the second connecting pipe (24) is fixedly connected to the upper end of the liquid outlet pipe (25).

6. A sub-boiling distillation apparatus for high-purity hydrochloric acid according to claim 1, characterized in that: The connecting block (26) is fixedly connected to the upper end of the preheating cylinder (2), the lower end of the connecting block (26) extends into the interior of the preheating cylinder (2), and the upper end of the heating rod (27) is fixedly connected to the lower end of the connecting block (26).

7. A sub-boiling distillation apparatus for high-purity hydrochloric acid according to claim 1, characterized in that: The lower ends of the left and right sides of the distillation box (1) are fixedly connected to third connecting pipes (33), the inner ends of the two groups of the third connecting pipes (33) are fixedly connected to transmission pipes (31), and the two groups of the transmission pipes (31) are fixedly connected to the left and right sides of the liquid inlet coil (3), respectively.

8. A sub-boiling distillation apparatus for high-purity hydrochloric acid according to claim 7, characterized in that: One end of the outer side of the two groups of third connecting pipes (33) is fixedly connected to a diversion pipe (34), and the middle part of the diversion pipe (34) is fixedly connected to the lower end of the liquid outlet pipe (25).

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