CN215462096U - Rectification preparation device of high-concentration formic acid - Google Patents
Rectification preparation device of high-concentration formic acid Download PDFInfo
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- CN215462096U CN215462096U CN202121277251.6U CN202121277251U CN215462096U CN 215462096 U CN215462096 U CN 215462096U CN 202121277251 U CN202121277251 U CN 202121277251U CN 215462096 U CN215462096 U CN 215462096U
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Abstract
本实用新型公开了一种高浓度甲酸的精馏制备装置，包括多个支撑柱和精馏塔，所述精馏塔的一侧密封插接有进液管，进液管的一侧设有进液阀，所述精馏塔的一侧外壁固定连接有支撑板，支撑板的顶部固定连接有负压泵，负压泵进气口的一端与精馏塔连通，所述精馏塔底部的一侧密封插接有导液管，导液管的一侧设有再沸器，再沸器与导液管连通，且导液管的另一端也与精馏塔连通，所述精馏塔的顶部密封插接有导气管，导气管的一侧设有冷凝器。本实用新型能够降低精馏塔内的压强，从而降低甲酸混合溶液的沸点，减少甲酸混合溶液沸腾的时间，提高分离的效率，还能够对甲酸进行回流精馏操作，提升精馏的效果，从而提高甲酸的浓度。
The utility model discloses a rectification preparation device for high-concentration formic acid, which comprises a plurality of support columns and a rectification tower. One side of the rectification tower is sealed and inserted with a liquid inlet pipe, and one side of the liquid inlet pipe is provided A liquid inlet valve, a support plate is fixedly connected to one side of the outer wall of the rectification tower, a negative pressure pump is fixedly connected to the top of the support plate, and one end of the air inlet of the negative pressure pump is communicated with the rectification tower, and the bottom of the rectification tower is connected One side of the pipe is sealed and plugged with a guide pipe, one side of the guide pipe is provided with a reboiler, the reboiler is communicated with the guide pipe, and the other end of the guide pipe is also communicated with the rectifying tower. The top of the tower is sealed and plugged with an air duct, and one side of the air duct is provided with a condenser. The utility model can reduce the pressure in the rectification tower, thereby lowering the boiling point of the formic acid mixed solution, reducing the boiling time of the formic acid mixed solution, improving the separation efficiency, and can also carry out the reflux rectification operation on the formic acid to improve the effect of rectification, thereby Increase the concentration of formic acid.
Description
Technical Field
The utility model relates to the technical field of rectification devices, in particular to a rectification preparation device for high-concentration formic acid.
Background
Formic acid, commonly known as formic acid, is the simplest carboxylic acid, is colorless and liquid with pungent smell, is widely used in the industries of pesticides, leather, dyes, medicines, rubber and the like, can be used for manufacturing leather softeners, rubber coagulants and the like, and is an important chemical raw material, wherein formic acid produced immediately contains a large amount of water, so that the formic acid needs to be rectified and purified, but the rectification effect of a rectification preparation device on the market is poor, the concentration of the formic acid is reduced, and the industrial demand cannot be met.
At present, the rectification preparation of formic acid in the market is mostly single rectification, has no better rectification effect, can not prepare high-concentration formic acid, and can not meet the requirements of people, so a rectification preparation device of high-concentration formic acid is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a rectification preparation device for high-concentration formic acid.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a rectification preparation device of high-concentration formic acid comprises a plurality of support columns and a rectification tower, wherein one side of the rectification tower is hermetically inserted with a liquid inlet pipe, one side of the liquid inlet pipe is provided with a liquid inlet valve, the outer wall of one side of the rectifying tower is fixedly connected with a supporting plate, the top of the supporting plate is fixedly connected with a negative pressure pump, one end of an air inlet of the negative pressure pump is communicated with the rectifying tower, a liquid guide pipe is hermetically inserted at one side of the bottom of the rectifying tower, a reboiler is arranged at one side of the liquid guide pipe and is communicated with the liquid guide pipe, the other end of the liquid guide pipe is also communicated with the rectifying tower, the top of the rectifying tower is hermetically inserted with a gas guide pipe, one side of the gas guide pipe is provided with a condenser, the condenser is communicated with the gas guide pipe, the other end of the gas guide pipe is fixedly provided with a reflux box, the bottom of the reflux box is hermetically inserted with a connecting pipe, one side of the rectifying tower is hermetically inserted with a water outlet pipe, and two ends of the water outlet pipe are respectively provided with a reflux valve and a water outlet valve.
As a further scheme of the utility model, a discharge pipe is hermetically inserted at the bottom of the rectifying tower, and a discharge valve is arranged on one side of the discharge pipe.
As a further scheme of the utility model, the outer wall of one side of the rectifying tower is fixedly connected with a fixed frame, and two sides of the fixed frame are respectively and fixedly connected with the condenser and the reflux box.
As a further proposal of the utility model, one side of the return box is hermetically inserted with a sampling tube.
As a further scheme of the utility model, an access door is arranged on one side of the rectifying tower, a handle is fixedly connected to the outer wall of one side of the access door, and an anti-skid pad is fixedly connected to one side of the handle.
As a further scheme of the utility model, a sealing gasket is fixedly connected to the inner wall of one side of the access door.
As a further scheme of the utility model, the tops of the support columns are fixedly connected with fixing rings, and the rectifying tower is fixedly arranged in the fixing rings.
The utility model has the beneficial effects that:
1. according to the utility model, the arrangement of pumping the air in the rectifying tower by the negative pressure pump can reduce the pressure in the rectifying tower, thereby reducing the boiling point of the formic acid mixed solution, reducing the boiling time of the formic acid mixed solution and improving the separation efficiency.
2. This practicality sets up through the cooperation of air duct, condenser, return tank, connecting pipe and reflux valve and can carry out the rectification operation that flows back to formic acid, promotes the effect of rectification to improve the concentration of formic acid.
3. According to the utility model, the sampling tube is arranged on one side of the return pipe, so that the concentration of formaldehyde in the return box can be detected, the times of reflux rectification can be accurately controlled, and the formic acid can be sufficiently separated.
Drawings
FIG. 1 is a schematic perspective view of a rectification apparatus for producing high-concentration formic acid according to the present invention;
FIG. 2 is a schematic front view of a rectification preparation device for high-concentration formic acid according to the present invention;
FIG. 3 is a schematic diagram of a side view of a rectification apparatus for producing high-concentration formic acid according to the present invention.
In the figure: 1. a support pillar; 2. a catheter; 3. a reboiler; 4. a fixing ring; 5. a liquid inlet pipe; 6. a liquid inlet valve; 7. a negative pressure pump; 8. a rectifying tower; 9. an air duct; 10. a condenser; 11. a fixed mount; 12. a return tank; 13. a water outlet valve; 14. a water outlet pipe; 15. a discharge pipe; 16. a discharge valve; 17. a sampling tube; 18. a reflux valve; 19. an access door.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. It should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and their meaning in the context of this patent may be understood by those skilled in the art as appropriate.
Referring to fig. 1-3, a rectification preparation device of high-concentration formic acid comprises a plurality of support columns 1 and a rectification tower 8, wherein a liquid inlet pipe 5 is inserted into one side of the rectification tower 8 in a sealing manner, the liquid inlet pipe 5 is convenient for injecting a formic acid mixed solution into the rectification tower 8, a liquid inlet valve 6 is arranged on one side of the liquid inlet pipe 5, a support plate is fixed on the outer wall of one side of the rectification tower 8 through a bolt, a negative pressure pump 7 is fixed on the top of the support plate through a bolt, one end of an air inlet of the negative pressure pump 7 is communicated with the rectification tower 8, the negative pressure pump 7 is started to pump air in the rectification tower 8 out, so that the air pressure in the rectification tower 8 is reduced, the boiling point of the formic acid mixed solution is reduced, a liquid guide pipe 2 is inserted into one side of the bottom of the rectification tower 8 in a sealing manner, one side of the liquid guide pipe 2 is provided with the reboiler 3, the reboiler 3 is communicated with the liquid guide pipe 2, the other end of the liquid guide pipe 2 is also communicated with the rectification tower 8, the reboiler 3 is started to distill the formic acid mixed solution in and go in and out, the sealed grafting in top of rectifying column 8 has air duct 9, one side of air duct 9 is equipped with condenser 10, condenser 10 and air duct 9 intercommunication, the other end fixed mounting of air duct 9 has return tank 12, the sealed grafting in bottom of return tank 12 has the connecting pipe, the sealed grafting in one side of rectifying column 8 has outlet pipe 14, the both ends of outlet pipe 14 are equipped with reflux valve 18 and outlet valve 13 respectively, through air duct 9, condenser 10, return tank 12, the cooperation design of connecting pipe and reflux valve 18 carries out the reflux rectification operation to formic acid.
In the utility model, a discharge pipe 15 is hermetically inserted at the bottom of a rectifying tower 8, a discharge valve 16 is arranged at one side of the discharge pipe 15, the discharge valve 16 is opened, formic acid is led out from the discharge pipe 15, a fixed frame 11 is fixed on the outer wall of one side of the rectifying tower 8 through bolts, two sides of the fixed frame 11 are respectively and fixedly connected with a condenser 10 and a return box 12, the fixed frame 11 supports the condenser 10 and the return box 12, a sampling pipe 17 is hermetically inserted at one side of the return box 12, the concentration of formaldehyde in the return box 12 can be detected through the sampling pipe 17, so that the times of return rectification can be accurately controlled, an access door 19 is arranged at one side of the rectifying tower 8, the design of the access door 19 is convenient for overhauling the rectifying tower 8, a handle is fixed on the outer wall of one side of the access door 19 through bolts, an anti-skid pad is bonded at one side of the handle, a sealing pad is bonded on the inner wall of one side of the access door 19, and a fixing ring 4 is fixed on the tops of a plurality of supporting columns 1 through bolts, rectifying column 8 fixed mounting is in solid fixed ring 4, and support column 1 and solid fixed ring 4 support rectifying column 8.
The working principle of the embodiment is as follows: when in use, firstly, the liquid inlet valve 6 is opened, the formic acid mixed solution is injected into the rectifying tower 8 from the liquid inlet pipe 5, then the negative pressure pump 7 is started to extract air in the rectifying tower 8, so as to reduce the air pressure in the rectifying tower 8 and further reduce the boiling point of the formic acid mixed solution, then the reboiler 3 is started to distill the formic acid mixed solution in and out, water vapor generated during distillation rises to the top of the rectifying tower 8, then the gas guide pipe 9 discharges the rectifying tower 8, the formic acid mixed solution enters the condenser 10 to be cooled in and out, the water vapor is liquefied into water and flows into the reflux box 12, then the water in the reflux box 12 is sampled and detected from the sampling pipe 17, the concentration of the formic acid in the water is detected, if the detection is unqualified, the reflux valve 18 is opened, the formic acid mixed solution returns to the rectifying tower 8 from the water outlet pipe 14 to be rectified, the rectification is repeatedly carried out in such a way, so that the formic acid and the water are fully separated, and opening a water outlet valve 13 until the sampling detection is qualified, discharging the water in the return tank 12 from a water outlet pipe 14, and finally opening a discharge valve 16 to lead out the formic acid from a discharge pipe 15.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. The rectification preparation device of the high-concentration formic acid comprises a plurality of supporting columns (1) and a rectification tower (8), and is characterized in that a liquid inlet pipe (5) is inserted in one side of the rectification tower (8) in a sealing manner, a liquid inlet valve (6) is arranged on one side of the liquid inlet pipe (5), a supporting plate is fixedly connected to the outer wall of one side of the rectification tower (8), a negative pressure pump (7) is fixedly connected to the top of the supporting plate, one end of an air inlet of the negative pressure pump (7) is communicated with the rectification tower (8), a liquid guide pipe (2) is inserted in one side of the bottom of the rectification tower (8) in a sealing manner, a reboiler (3) is arranged on one side of the liquid guide pipe (2), the reboiler (3) is communicated with the liquid guide pipe (2), the other end of the liquid guide pipe (2) is also communicated with the rectification tower (8), an air guide pipe (9) is inserted in a sealing manner at the top of the rectification tower (8), a condenser (10) is arranged on one side of the air guide pipe (9), condenser (10) and air duct (9) intercommunication, the other end fixed mounting of air duct (9) has flow back box (12), and the sealed grafting in bottom of flow back box (12) has the connecting pipe, the sealed grafting in one side of rectifying column (8) has outlet pipe (14), and the both ends of outlet pipe (14) are equipped with reflux valve (18) and outlet valve (13) respectively.
2. The rectification preparation device of high-concentration formic acid according to claim 1, wherein a discharge pipe (15) is hermetically inserted into the bottom of the rectification column (8), and a discharge valve (16) is arranged on one side of the discharge pipe (15).
3. The rectification preparation device of high-concentration formic acid according to claim 1, wherein the outer wall of one side of the rectification tower (8) is fixedly connected with a fixed frame (11), and two sides of the fixed frame (11) are respectively and fixedly connected with a condenser (10) and a reflux box (12).
4. The rectification preparation device of high-concentration formic acid as claimed in claim 1, wherein a sampling tube (17) is hermetically inserted into one side of the reflux box (12).
5. The rectification preparation device of high-concentration formic acid according to claim 1, wherein an access door (19) is arranged on one side of the rectification tower (8), a handle is fixedly connected to the outer wall of one side of the access door (19), and an anti-slip pad is fixedly connected to one side of the handle.
6. The rectification preparation device of high-concentration formic acid according to claim 5, wherein a sealing gasket is fixedly connected to the inner wall of one side of the access door (19).
7. The rectification preparation device of high-concentration formic acid according to claim 1, wherein the tops of the support columns (1) are fixedly connected with fixing rings (4), and the rectification tower (8) is fixedly installed in the fixing rings (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121277251.6U CN215462096U (en) | 2021-06-09 | 2021-06-09 | Rectification preparation device of high-concentration formic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121277251.6U CN215462096U (en) | 2021-06-09 | 2021-06-09 | Rectification preparation device of high-concentration formic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215462096U true CN215462096U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121277251.6U Active CN215462096U (en) | 2021-06-09 | 2021-06-09 | Rectification preparation device of high-concentration formic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215462096U (en) |
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2021
- 2021-06-09 CN CN202121277251.6U patent/CN215462096U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A distillation preparation device for high concentration formic acid Granted publication date: 20220111 Pledgee: Bank of China Limited by Share Ltd. Nanjing City South Branch Pledgor: Nanjing Chaoyi Biotechnology Co.,Ltd. Registration number: Y2024980009025 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220111 Pledgee: Bank of China Limited by Share Ltd. Nanjing City South Branch Pledgor: Nanjing Chaoyi Biotechnology Co.,Ltd. Registration number: Y2024980009025 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |