CN217220232U - Hydrofluoric acid rectification degassing device - Google Patents
Hydrofluoric acid rectification degassing device Download PDFInfo
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- CN217220232U CN217220232U CN202220294910.5U CN202220294910U CN217220232U CN 217220232 U CN217220232 U CN 217220232U CN 202220294910 U CN202220294910 U CN 202220294910U CN 217220232 U CN217220232 U CN 217220232U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The utility model relates to a hydrofluoric acid rectification degasser, including thick tower, vacuum degassing tower, rectifying column, thick tower connects vacuum degassing tower through first pipeline, the last fixed mounting of vacuum degassing tower has the vacuum pump, the vacuum pump is connected with first condenser through first pipeline, there is the second condenser below the rectifying column through the pipe connection, first condenser passes through the pipe connection rectifying column, the second condenser is connected with the mixing tank through the second pipeline, install the flow control valve on the second pipeline, the effectual pure water that produces in the vacuum degassing tower course of operation that recycles, has improved the purity of finished product hydrofluoric acid solution, has realized the mixture of liquid hydrofluoric acid and pure water when carrying out the rectification degassing to hydrofluoric acid, conveniently prepares the hydrofluoric acid solution that the concentration difference accords with the factory requirement, the concentration is more convenient to adjust, and the operation is safer and more convenient.
Description
Technical Field
The utility model relates to a hydrofluoric acid rectification degasser belongs to hydrofluoric acid preparation technical field.
Background
Hydrofluoric acid (HF) is an aqueous solution of hydrofluoric acid gas, which is also called as fluoric acid, muscovic acid, bone dissolving water, drilling washing water, a rust remover and acid cleaning, is colorless and transparent to light yellow smoke-generating liquid at normal temperature, has irritant smell, has a specific gravity of 0.98, is slightly lighter than water, has a boiling point of 19.4 ℃, is extremely volatile, is placed in the air to generate muscovic smoke, is an aqueous solution containing less than 40-45% of hydrofluoric acid chemical book 60%, is colorless and clear smoke-generating liquid, is an industrial product generally an aqueous solution containing 40-45% of HF, has irritant smell, generates fluorosulfonic acid with sulfur trioxide or chlorosulfonic acid, reacts with halogenated aromatic hydrocarbon, alcohol, alkene and hydrocarbon to generate fluorine-containing organic matters, and is dissolved in water to generate acid with strong corrosivity, and is acid with medium strength.
In the prior art, hydrofluoric acid is usually produced by adopting a sulfuric acid method, and dried fluorite powder and sulfuric acid are mixed according to the proportion of 1: (1.2-1.3), mixing, feeding into a rotary reaction furnace for reaction, controlling the gas phase temperature in the furnace at 280 +/-10 ℃, feeding the reacted gas into a rough distillation tower, removing most of sulfuric acid, water and fluorite powder, controlling the tower kettle temperature at 100-110 ℃, the tower top temperature at 35-40 ℃, condensing the crude hydrofluoric acid gas into liquid through a degassing tower, controlling the tower kettle temperature at 20-23 ℃, controlling the tower top temperature at-8 +/-1 ℃, feeding into a rectification tower for rectification, controlling the tower kettle temperature at 30-40 ℃, controlling the tower top temperature at 19.6 +/-0.5 ℃, and absorbing the refined hydrofluoric acid by using water to obtain the hydrofluoric acid product.
In the prior art, after the gas after reaction in the rotary reaction furnace is rectified and degassed, hydrofluoric acid gas and water are additionally mixed, and the toxicity and the corrosivity of hydrofluoric acid are high, so that inconvenience is brought to operation.
In order to solve the problems, the application provides a hydrofluoric acid rectification degassing device.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model overcomes current defect, provides a hydrofluoric acid rectification degasser, has realized the mixture of liquid hydrofluoric acid and pure water when carrying out rectification degasification to hydrofluoric acid, conveniently prepares the different hydrofluoric acid solution that accords with the requirement of dispatching from the factory of concentration, and it is more convenient that the operation is got up, can effectively solve the problem in the background art.
In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a hydrofluoric acid rectification degasser, includes thick tower, vacuum degassing tower, rectifying column, thick tower connects vacuum degassing tower through first pipeline, fixed mounting has the vacuum pump on the vacuum degassing tower, the vacuum pump has first condenser through first pipeline connection, there is the second condenser rectifying column below the rectifying column through the pipe connection, first condenser passes through the pipe connection rectifying column, the second condenser is connected with mixed cauldron through second pipeline, install flow control valve on the second pipeline, the first pipeline of vacuum degassing tower bottom fixedly connected with, first pipeline other end fixedly connected with liquid flow pump, liquid flow pump passes through second pipeline connection mixed cauldron.
As a further improvement of the utility model, the temperature of the tower kettle of the crude distillation tower is 100-110 ℃, and the temperature of the tower top is 35-40 ℃.
As a further improvement of the utility model, the first water pipeline and the second water pipeline are respectively connected with the input end and the output end of the liquid flow pump.
As a further improvement of the utility model, the temperature inside the first condenser is set to 21-24 ℃.
As a further improvement of the utility model, the temperature inside the second condenser is set to-4-10 ℃.
As a further improvement of the utility model, the temperature of the tower kettle of the rectifying tower is set to be 22-25 ℃, and the temperature of the tower top is set to be 16-18 ℃.
The utility model discloses beneficial effect: the utility model provides a hydrofluoric acid rectification degassing unit, the effectual pure water that produces in the vacuum degassing tower working process carries out recycle, has improved finished product hydrofluoric acid solution's purity, has realized the mixture of liquid hydrofluoric acid and pure water when carrying out the rectification degasification to hydrofluoric acid, conveniently prepares the hydrofluoric acid solution that the concentration difference accords with the requirement of dispatching from the factory, and is more convenient to the regulation of concentration, and the operation is got up also safely more conveniently.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention.
FIG. 1 is a structural diagram of a hydrofluoric acid rectification degasser of the present invention.
Reference numbers in the figures: 1. a crude distillation column; 2. a vacuum degassing tower; 3. a first condenser; 4. a rectifying tower; 5. a second condenser; 6. a mixing kettle; 7. a flow regulating valve; 8. a liquid flow pump; 9. a first delivery conduit; 10. a vacuum pump; 11. a first gas transmission pipeline; 12. a first water delivery pipeline; 13. a second water delivery pipeline; 14. a second delivery conduit.
Detailed Description
The present invention will be further described with reference to the following embodiments, wherein the drawings are for illustrative purposes only and are not intended to be limiting, and in order to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced and do not represent the size of an actual product.
In order to make the technical means, creation characteristics, achievement purposes and efficacies of the utility model easy to understand, in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of description of the present invention and simplification of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention, furthermore, the terms "first", "second", "third" are used for descriptive purposes only, but not as indicating or implying relative importance, the invention is further described below in connection with the detailed description.
Examples
As shown in figure 1, a hydrofluoric acid rectification degassing device comprises a crude distillation tower 1, a vacuum degassing tower 2 and a rectification tower 4, the crude distillation tower 1 is connected with a vacuum degassing tower 2 through a first conveying pipeline 9, a vacuum pump 10 is fixedly arranged on the vacuum degassing tower 2, the vacuum pump 10 is connected with a first condenser 3 through a first gas transmission pipeline 11, a second condenser 5 is connected below the rectifying tower 4 through a pipeline, the first condenser 3 is connected with the rectifying tower 4 through a pipeline, the second condenser 5 is connected with the mixing kettle 6 through a second conveying pipeline 14, a flow regulating valve 7 is arranged on the second conveying pipeline 14, a first water conveying pipeline 12 is fixedly connected at the bottom of the vacuum degassing tower 2, the other end of the first water conveying pipeline 12 is fixedly connected with a liquid flow pump 8, and the liquid flow pump 8 is connected with the mixing kettle 6 through a second water conveying pipeline 13.
In this embodiment, the temperature of the bottom of the crude distillation column 1 is 100 to 110 ℃ and the temperature of the top of the column is 35 to 40 ℃.
By adopting the technical scheme, the impurities in the gaseous hydrofluoric acid can be conveniently fractionated in the rough distillation process.
In this embodiment, the first water pipe 12 and the second water pipe 13 are respectively connected to the input end and the output end of the liquid flow pump 8.
In this embodiment, the temperature inside the first condenser 3 is set to 21-24 degrees celsius, and with this temperature range, the hydrofluoric acid gas enters the rectifying tower 4 at a temperature close to the lower boiling point, which is convenient for rectification and subsequent liquefaction.
In this embodiment, the temperature inside the second condenser 5 is set to-4 to 10 ℃, and the rectified hydrofluoric acid enters the second condenser 5 to be cooled and liquefied, so as to form a liquid state which is transported to the inside of the mixing kettle 6, thereby facilitating mixing.
In this embodiment, the temperature of the bottom of the rectifying tower 4 is set to 22-25 degrees celsius, and the temperature of the top of the rectifying tower is set to 16-18 degrees celsius.
The utility model discloses the theory of operation: the gas reacted in the rotary reaction furnace firstly enters a crude distillation tower 1 for crude distillation treatment, most impurities in hydrofluoric acid gas are taken out, then the hydrofluoric acid gas enters a vacuum degassing tower 2 for degassing treatment through a first conveying pipeline 9, water is sprayed from the top down in the degassing process, after being dispersed through a filter material, a vacuum pump 10 vacuumizes the middle part of the tower, the hydrofluoric acid is sucked away by the vacuum pump 10 in a gaseous state, and is subjected to primary condensation through a first condenser 3, rectification is carried out through a rectifying tower 4, liquid hydrofluoric acid is formed after condensation through a second condenser 5 and enters a mixing kettle 6, degassed pure water flows to the bottom of the tower and enters the mixing kettle 6 along a first water conveying pipeline 12 and a second water conveying pipeline 13 under the action of a liquid flow pump 9 to be mixed with the liquid hydrofluoric acid to form a solution meeting the production standard, and the pure water generated in the working process of the vacuum tower 2 is recycled, because the water purity that produces in the vacuum degassing tower 2 working process is higher, impurity is also still less when preparing hydrofluoric acid solution, in addition, owing to install flow control valve 7 on second pipeline 14, can adjust the liquid hydrofluoric acid flow that gets into mixing kettle 6 inside according to actual need to prepare the concentration difference and accord with the hydrofluoric acid solution that leaves the factory the requirement, it is more convenient to the regulation of concentration.
Through the technical scheme, the utility model discloses following beneficial effect has: the pure water that produces in the effectual 2 working processes to the vacuum degassing tower carries out recycle, has improved the purity of finished product hydrofluoric acid solution, has realized the mixture of liquid hydrofluoric acid and pure water when carrying out the rectification degasification to hydrofluoric acid, conveniently prepares the hydrofluoric acid solution that the concentration difference accords with the requirement of leaving the factory, and is more convenient to the regulation of concentration.
The foregoing is an embodiment of the preferred embodiment of the present invention, showing and describing the basic principles and main features of the present invention and the advantages of the present invention, it should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, and the foregoing embodiments and descriptions are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the present invention as claimed, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a hydrofluoric acid rectification degassing unit, includes thick tower (1), vacuum degassing tower (2), rectifying column (4), its characterized in that: the crude distillation tower (1) is connected with a vacuum degassing tower (2) through a first conveying pipeline (9), a vacuum pump (10) is fixedly arranged on the vacuum degassing tower (2), the vacuum pump (10) is connected with a first condenser (3) through a first gas transmission pipeline (11), a second condenser (5) is connected below the rectifying tower (4) through a pipeline, the first condenser (3) is connected with the rectifying tower (4) through a pipeline, the second condenser (5) is connected with the mixing kettle (6) through a second conveying pipeline (14), a flow regulating valve (7) is arranged on the second conveying pipeline (14), the bottom of the vacuum degassing tower (2) is fixedly connected with a first water conveying pipeline (12), the other end of the first water delivery pipeline (12) is fixedly connected with a liquid flow pump (8), the liquid flow pump (8) is connected with the mixing kettle (6) through a second water conveying pipeline (13).
2. The hydrofluoric acid rectification degassing device according to claim 1, wherein: the temperature of the tower kettle of the crude distillation tower (1) is 100-110 ℃, and the temperature of the tower top is 35-40 ℃.
3. The hydrofluoric acid rectification degassing device according to claim 1, wherein: the first water conveying pipeline (12) and the second water conveying pipeline (13) are respectively connected to the input end and the output end of the liquid flow pump (8).
4. The hydrofluoric acid rectification degassing device according to claim 1, wherein: the temperature inside the first condenser (3) is set to 21-24 ℃.
5. The hydrofluoric acid rectification degassing device according to claim 1, wherein: the temperature inside the second condenser (5) is set to-4-10 ℃.
6. The hydrofluoric acid rectification degassing device according to claim 1, wherein: the temperature of a tower kettle of the rectifying tower (4) is set to be 22-25 ℃, and the temperature of the tower top is set to be 16-18 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220294910.5U CN217220232U (en) | 2022-02-14 | 2022-02-14 | Hydrofluoric acid rectification degassing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220294910.5U CN217220232U (en) | 2022-02-14 | 2022-02-14 | Hydrofluoric acid rectification degassing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217220232U true CN217220232U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220294910.5U Active CN217220232U (en) | 2022-02-14 | 2022-02-14 | Hydrofluoric acid rectification degassing device |
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| Country | Link |
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| CN (1) | CN217220232U (en) |
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2022
- 2022-02-14 CN CN202220294910.5U patent/CN217220232U/en active Active
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