CN219355764U - Device for adsorbing hydrogen fluoride in fluorine gas - Google Patents
Device for adsorbing hydrogen fluoride in fluorine gas Download PDFInfo
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- CN219355764U CN219355764U CN202223272814.XU CN202223272814U CN219355764U CN 219355764 U CN219355764 U CN 219355764U CN 202223272814 U CN202223272814 U CN 202223272814U CN 219355764 U CN219355764 U CN 219355764U
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Abstract
The utility model discloses a device for adsorbing hydrogen fluoride in fluorine gas, which comprises an air inlet main pipe, a first air inlet valve, a first adsorption unit, a first air outlet valve, a first air outlet pipe, a second air inlet valve, a second adsorption unit, a second air outlet valve, a second air outlet pipe and an air outlet main pipe; the air inlet manifold is communicated with the first air inlet pipe and the second air inlet pipe, the first air inlet pipe is communicated with the first adsorption unit, the second air inlet pipe is communicated with the second adsorption unit, the first air inlet valve is arranged on the first air inlet pipe, the second air inlet valve is arranged on the second air inlet pipe, the first air outlet pipe is communicated with the first adsorption unit, the second air outlet pipe is communicated with the second adsorption unit, the first air outlet valve is arranged on the first air outlet pipe, and the second air outlet valve is arranged on the second air outlet pipe; a first adsorbent is arranged in the first adsorption tank; the utility model aims to provide a device for adsorbing hydrogen fluoride in fluorine gas, which adopts a one-to-one working mode to ensure that the fluorine gas is in stable production efficiency.
Description
Technical Field
The utility model relates to the technical field of fluorine gas preparation, in particular to a device for adsorbing hydrogen fluoride in fluorine gas.
Background
Fluorine is an element with very active chemical property, almost no free fluorine exists in nature, fluorine gas is generally prepared by electrolyzing hydrogen fluoride, fluorine gas is collected at an electrolysis anode, and hydrogen gas is collected at a cathode, so that the fluorine gas needs to be collected and treated in time due to very active chemical property of the fluorine gas, and the safety of equipment is ensured. Since hydrogen fluoride has a low boiling point temperature of about 19 degrees celsius, and the electrolysis temperature is much higher than the boiling point temperature of hydrogen fluoride during electrolysis, volatilization of hydrogen fluoride is easily caused during electrolysis, and therefore, a certain amount of hydrogen fluoride is contained in the fluorine gas collected at the anode, and this part of hydrogen fluoride needs to be removed in order to purify the fluorine gas. After most of the hydrogen fluoride is removed by condensation and liquefaction, the fluorine gas still contains a small amount of hydrogen fluoride, which is approximately less than five percent, and the hydrogen fluoride is difficult to remove by liquefaction.
Disclosure of Invention
The utility model aims to provide a device for adsorbing hydrogen fluoride in fluorine gas, which adopts a standby working mode to ensure that the fluorine gas is in stable production efficiency.
To achieve the purpose, the utility model adopts the following technical scheme: a device for adsorbing hydrogen fluoride in fluorine gas comprises an air inlet main pipe, a first air inlet valve, a first adsorption unit, a first air outlet valve, a first air outlet pipe, a second air inlet valve, a second adsorption unit, a second air outlet valve, a second air outlet pipe and an air outlet main pipe;
the air inlet manifold is communicated with the first air inlet pipe and the second air inlet pipe, the first air inlet pipe is communicated with the first adsorption unit, the second air inlet pipe is communicated with the second adsorption unit, the first air inlet valve is arranged on the first air inlet pipe, the second air inlet valve is arranged on the second air inlet pipe, the first air outlet pipe is communicated with the first adsorption unit, the second air outlet pipe is communicated with the second adsorption unit, the first air outlet valve is arranged on the first air outlet pipe, and the second air outlet valve is arranged on the second air outlet pipe;
the first adsorption unit comprises a first connecting pipe and at least two first adsorption tanks, the first air inlet pipe is communicated with the upper end of one first adsorption tank, one end of the first connecting pipe is communicated with the lower end of the first adsorption tank, the other end of the first connecting pipe is communicated with the upper end of the other first adsorption tank, and the first air outlet pipe is communicated with the lower end of the other first adsorption tank; a first adsorbent is arranged in the first adsorption tank;
the second adsorption unit comprises a second connecting pipe and at least two second adsorption tanks, the second air inlet pipe is communicated with the upper end of one second adsorption tank, one end of the second connecting pipe is communicated with the lower end of the second adsorption tank, the other end of the second connecting pipe is communicated with the upper end of the other second adsorption tank, and the second air outlet pipe is communicated with the lower end of the other second adsorption tank; and a second adsorbent is arranged in the second adsorption tank.
Preferably, the device further comprises a nitrogen buffer tank, a nitrogen main pipe, a first nitrogen air inlet valve, a second nitrogen air inlet pipe and a second nitrogen air inlet valve, wherein the nitrogen main pipe is communicated with the nitrogen buffer tank, one end of the first nitrogen air inlet pipe is communicated with the nitrogen main pipe, the other end of the first nitrogen air inlet pipe is communicated with the lower end of the first adsorption tank, one end of the second nitrogen air inlet pipe is communicated with the nitrogen main pipe, the other end of the second nitrogen air inlet pipe is communicated with the lower end of the second adsorption tank, the first nitrogen air inlet valve is arranged on the first nitrogen air inlet pipe, and the second nitrogen air inlet valve is arranged on the second nitrogen air inlet pipe;
the first adsorption unit further comprises a first exhaust pipe, one end of the first exhaust pipe is communicated with the upper end of the first adsorption tank, and the other end of the first exhaust pipe is communicated with tail gas treatment equipment;
the second adsorption unit further comprises a second exhaust pipe, one end of the second exhaust pipe is communicated with the upper end of the second adsorption tank, and the other end of the second exhaust pipe is communicated with tail gas treatment equipment.
Preferably, the first exhaust pipe is provided with a first radiating fin and a first exhaust valve, the first exhaust valve is arranged on the first exhaust pipe, and the first radiating fin is positioned at the conveying front end of the first exhaust valve.
Preferably, the second exhaust pipe is provided with a second radiating fin and a second exhaust valve, the second exhaust valve is arranged on the second exhaust pipe, and the second radiating fin is positioned at the conveying front end of the second exhaust valve.
Preferably, the first adsorption tank further comprises a first heating component, and a heating end of the first heating component is located in the first adsorption tank.
Preferably, the second adsorption tank further comprises a second heating component, and a heating end of the second heating component is located in the second adsorption tank.
Preferably, a first connecting valve is arranged on the first connecting pipe and is used for controlling the connection or disconnection of gas; the second connecting pipe is provided with a second connecting valve which is used for controlling the connection or disconnection of gas.
Preferably, the first adsorbent is one of lithium fluoride, potassium fluoride, sodium fluoride, barium fluoride, lithium fluorohydride, potassium fluorohydride and sodium fluorohydride; the second adsorbent is one of lithium fluoride, potassium fluoride, sodium fluoride, barium fluoride, lithium fluorohydride, potassium fluorohydride and sodium fluorohydride.
The technical scheme of the utility model has the beneficial effects that: the utility model carries out adsorption filtration on the added fluorine gas through the first adsorption unit or the second adsorption unit, the adsorbent which can adsorb the hydrogen fluoride and does not adsorb the fluorine gas is added into the first adsorption tank or the second adsorption tank, and the first adsorption tank or the second adsorption tank which are continuous plays a good adsorption role on the hydrogen fluoride, can remove the hydrogen fluoride in the fluorine gas and reduces the content of the hydrogen fluoride to be within one percent. Through designing two sets of adsorption units, during operation, can use simultaneously to improve adsorption efficiency and production efficiency, also can adopt a mode of operation that is equipped with, and during operation of a set of adsorption unit, another set of adsorption unit can get into clean mode, guarantees that fluorine gas is in stable production efficiency.
Drawings
Fig. 1 is a schematic diagram of the structure of an embodiment of the present utility model.
Wherein: an intake manifold 1, a first intake pipe 2, a first intake valve 3, a first adsorption unit 4, a first connection pipe 41, a first connection valve 411, a first adsorption tank 42, a first exhaust pipe 43, and a first exhaust valve 431;
a first air outlet valve 5, a first air outlet pipe 6, a second air inlet pipe 7, a second air inlet valve 8, a second adsorption unit 9, a second air outlet valve 10, a second air outlet pipe 11, an air outlet main pipe 12, a nitrogen buffer tank 13, a nitrogen main pipe 14, a first nitrogen inlet pipe 15 and a first nitrogen air inlet valve 16.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, a device for adsorbing hydrogen fluoride in fluorine gas comprises an air inlet main pipe 1, a first air inlet pipe 2, a first air inlet valve 3, a first adsorption unit 4, a first air outlet valve 5, a first air outlet pipe 6, a second air inlet pipe 7, a second air inlet valve 8, a second adsorption unit 9, a second air outlet valve 10, a second air outlet pipe 11 and an air outlet main pipe 12;
the air inlet header pipe 1 is communicated with the first air inlet pipe 2 and the second air inlet pipe 7, the first air inlet pipe 2 is communicated with the first adsorption unit 4, the second air inlet pipe 7 is communicated with the second adsorption unit 9, the first air inlet valve 3 is arranged on the first air inlet pipe 2, the second air inlet valve 8 is arranged on the second air inlet pipe 7, the first air outlet pipe 6 is communicated with the first adsorption unit 4, the second air outlet pipe 11 is communicated with the second adsorption unit 9, the first air outlet valve 5 is arranged on the first air outlet pipe 6, and the second air outlet valve 10 is arranged on the second air outlet pipe 11;
the first adsorption unit 4 comprises a first connecting pipe 41 and at least two first adsorption tanks 42, the first air inlet pipe 2 is communicated with the upper end of one first adsorption tank 42, one end of the first connecting pipe 41 is communicated with the lower end of the first adsorption tank 42, the other end of the first connecting pipe 41 is communicated with the upper end of the other first adsorption tank 42, and the first air outlet pipe 6 is communicated with the lower end of the other first adsorption tank 42; a first adsorbent is disposed in the first canister 42;
the second adsorption unit 9 comprises a second connecting pipe and at least two second adsorption tanks, the second air inlet pipe 7 is communicated with the upper end of one second adsorption tank, one end of the second connecting pipe is communicated with the lower end of the second adsorption tank, the other end of the second connecting pipe is communicated with the upper end of the other second adsorption tank, and the second air outlet pipe 11 is communicated with the lower end of the other second adsorption tank; and a second adsorbent is arranged in the second adsorption tank.
Fluorine is an element with very active chemical property, almost no free fluorine exists in nature, fluorine gas is generally prepared by electrolyzing hydrogen fluoride, fluorine gas is collected at an electrolysis anode, and hydrogen gas is collected at a cathode, so that the fluorine gas needs to be collected and treated in time due to very active chemical property of the fluorine gas, and the safety of equipment is ensured. Since hydrogen fluoride has a low boiling point temperature of about 19 degrees celsius, and the electrolysis temperature is much higher than the boiling point temperature of hydrogen fluoride during electrolysis, volatilization of hydrogen fluoride is easily caused during electrolysis, and therefore, a certain amount of hydrogen fluoride is contained in the fluorine gas collected at the anode, and this part of hydrogen fluoride needs to be removed in order to purify the fluorine gas. After most of the hydrogen fluoride is removed by condensation and liquefaction, the fluorine gas still contains a small amount of hydrogen fluoride, which is approximately less than five percent, and the hydrogen fluoride is difficult to remove by liquefaction.
The utility model carries out adsorption filtration on the added fluorine gas through the first adsorption unit 4 or the second adsorption unit 9, the adsorbent which can adsorb hydrogen fluoride and does not adsorb the fluorine gas is added into the first adsorption tank 42 or the second adsorption tank, and the first adsorption tank 42 or the second adsorption tank which are continuous plays a good role in adsorbing the hydrogen fluoride, so that the hydrogen fluoride in the fluorine gas can be removed, and the content of the hydrogen fluoride is reduced to be less than one percent. Through designing two sets of adsorption units, during operation, can use simultaneously to improve adsorption efficiency and production efficiency, also can adopt a mode of operation that is equipped with, and during operation of a set of adsorption unit, another set of adsorption unit can get into clean mode, guarantees that fluorine gas is in stable production efficiency.
Specifically, the device further comprises a nitrogen buffer tank 13, a nitrogen main pipe 14, a first nitrogen inlet pipe 15, a first nitrogen inlet valve 16, a second nitrogen inlet pipe and a second nitrogen inlet valve, wherein the nitrogen main pipe 14 is communicated with the nitrogen buffer tank 13, one end of the first nitrogen inlet pipe 15 is communicated with the nitrogen main pipe 14, the other end of the first nitrogen inlet pipe 15 is communicated with the lower end of the first adsorption tank 42, one end of the second nitrogen inlet pipe is communicated with the nitrogen main pipe 14, the other end of the second nitrogen inlet pipe is communicated with the lower end of the second adsorption tank, the first nitrogen inlet valve is arranged on the first nitrogen inlet pipe 15, and the second nitrogen inlet valve is arranged on the second nitrogen inlet pipe;
the first adsorption unit 4 further comprises a first exhaust pipe 43, one end of the first exhaust pipe 43 is communicated with the upper end of the first adsorption tank 42, and the other end of the first exhaust pipe 43 is communicated with an exhaust gas treatment device;
the second adsorption unit 9 further comprises a second exhaust pipe, one end of the second exhaust pipe is communicated with the upper end of the second adsorption tank, and the other end of the second exhaust pipe is communicated with the tail gas treatment equipment.
When the corresponding adsorption unit is shut down or maintained, the first adsorption tank 42 or the second adsorption tank is back-blown and cleaned through the nitrogen main pipe 14, the first nitrogen inlet pipe 15 or the second nitrogen inlet pipe, and the first adsorbent or the second adsorbent is re-activated, so that the first adsorbent or the second adsorbent has adsorption activity again, the first adsorption tank 42 and the second adsorption tank can be reused, and the economic benefit is improved.
Preferably, the first exhaust pipe 43 is provided with a first heat dissipation fin and a first exhaust valve 431, the first exhaust valve 431 is disposed on the first exhaust pipe 43, and the first heat dissipation fin is located at a conveying front end of the first exhaust valve 431. The second exhaust pipe is provided with a second radiating fin and a second exhaust valve, the second exhaust valve is arranged on the second exhaust pipe, and the second radiating fin is positioned at the conveying front end of the second exhaust valve.
When back blowing out air, the gas in the first adsorption tank 42 has a certain temperature, and when the back blowing out air is directly output, the first exhaust valve 431 which is easy to control on-off is damaged, so that the heat dissipation fins are arranged to dissipate heat of a pipeline at the front end of the first exhaust valve 431 in a conveying manner, the temperature of the gas in the first exhaust pipe 43 is reduced, the effect of protecting the first exhaust valve 431 is achieved, and the service life of the first exhaust valve 431 is prolonged. The second exhaust valve operates in the same manner as the first exhaust valve 431.
Meanwhile, the first canister 42 further includes a first heating component, and a heating end of the first heating component is located in the first canister 42. The second adsorption tank further comprises a second heating component, and the heating end of the second heating component is positioned in the second adsorption tank.
When the first adsorption unit 4 performs adsorption operation, fluorine gas enters the first adsorption tanks 42 which are continuously connected in series to perform physical adsorption, hydrogen fluoride in the fluorine gas is filtered, at this time, the second adsorption unit 9 can enter a heating stage, the second air inlet valve 8 is closed, the second nitrogen air inlet valve and the second air outlet valve are opened, the second adsorption tanks are heated through the second heating assembly, hydrogen fluoride adsorbed on the second adsorbent is separated, and then the hydrogen fluoride is blown out through flushing by adding nitrogen, so that the second adsorbent has adsorption effect again. When the second adsorption unit 9 works, the first adsorption unit 4 enters a heating stage to form a standby working mode, so that the fluorine gas can be adsorbed continuously, and the economic benefit is improved.
Specifically, the first connection pipe 41 is provided with a first connection valve 411, and the first connection valve 411 is used for controlling gas to be connected or disconnected; the second connecting pipe is provided with a second connecting valve which is used for controlling the connection or disconnection of gas.
The corresponding adsorption tanks are controlled to work through the connecting valves, and when the production quantity is low, the energy saving effect can be realized by closing part of the adsorption tanks.
Preferably, the first adsorbent is one of lithium fluoride, potassium fluoride, sodium fluoride, barium fluoride, lithium fluorohydride, potassium fluorohydride and sodium fluorohydride; the second adsorbent is one of lithium fluoride, potassium fluoride, sodium fluoride, barium fluoride, lithium fluorohydride, potassium fluorohydride and sodium fluorohydride.
The adsorption capacity to hydrogen fluoride is stronger, and the adsorption effect to fluorine gas is not possessed, so that the hydrogen fluoride with less fluorine gas content can be physically adsorbed through the adsorbent, the hydrogen fluoride in the fluorine gas is removed, the selectivity is high, the desorption is convenient, and the price is low.
In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (8)
1. The device for adsorbing the hydrogen fluoride in the fluorine gas is characterized by comprising an air inlet main pipe, a first air inlet valve, a first adsorption unit, a first air outlet valve, a first air outlet pipe, a second air inlet valve, a second adsorption unit, a second air outlet valve, a second air outlet pipe and an air outlet main pipe;
the air inlet manifold is communicated with the first air inlet pipe and the second air inlet pipe, the first air inlet pipe is communicated with the first adsorption unit, the second air inlet pipe is communicated with the second adsorption unit, the first air inlet valve is arranged on the first air inlet pipe, the second air inlet valve is arranged on the second air inlet pipe, the first air outlet pipe is communicated with the first adsorption unit, the second air outlet pipe is communicated with the second adsorption unit, the first air outlet valve is arranged on the first air outlet pipe, and the second air outlet valve is arranged on the second air outlet pipe;
the first adsorption unit comprises a first connecting pipe and at least two first adsorption tanks, the first air inlet pipe is communicated with the upper end of one first adsorption tank, one end of the first connecting pipe is communicated with the lower end of the first adsorption tank, the other end of the first connecting pipe is communicated with the upper end of the other first adsorption tank, and the first air outlet pipe is communicated with the lower end of the other first adsorption tank; a first adsorbent is arranged in the first adsorption tank;
the second adsorption unit comprises a second connecting pipe and at least two second adsorption tanks, the second air inlet pipe is communicated with the upper end of one second adsorption tank, one end of the second connecting pipe is communicated with the lower end of the second adsorption tank, the other end of the second connecting pipe is communicated with the upper end of the other second adsorption tank, and the second air outlet pipe is communicated with the lower end of the other second adsorption tank; and a second adsorbent is arranged in the second adsorption tank.
2. The device for adsorbing hydrogen fluoride in fluorine gas according to claim 1, further comprising a nitrogen buffer tank, a nitrogen main pipe, a first nitrogen inlet valve, a second nitrogen inlet pipe and a second nitrogen inlet valve, wherein the nitrogen main pipe is communicated with the nitrogen buffer tank, one end of the first nitrogen inlet pipe is communicated with the nitrogen main pipe, the other end of the first nitrogen inlet pipe is communicated with the lower end of the first adsorption tank, one end of the second nitrogen inlet pipe is communicated with the nitrogen main pipe, the other end of the second nitrogen inlet pipe is communicated with the lower end of the second adsorption tank, the first nitrogen inlet valve is arranged on the first nitrogen inlet pipe, and the second nitrogen inlet valve is arranged on the second nitrogen inlet pipe;
the first adsorption unit further comprises a first exhaust pipe, one end of the first exhaust pipe is communicated with the upper end of the first adsorption tank, and the other end of the first exhaust pipe is communicated with tail gas treatment equipment;
the second adsorption unit further comprises a second exhaust pipe, one end of the second exhaust pipe is communicated with the upper end of the second adsorption tank, and the other end of the second exhaust pipe is communicated with tail gas treatment equipment.
3. The apparatus for adsorbing hydrogen fluoride in fluorine gas according to claim 2, wherein a first heat radiating fin and a first exhaust valve are provided on the first exhaust pipe, the first exhaust valve is provided on the first exhaust pipe, and the first heat radiating fin is located at a conveying front end of the first exhaust valve.
4. A device for adsorbing hydrogen fluoride in fluorine gas according to claim 3, wherein a second heat radiating fin and a second exhaust valve are arranged on the second exhaust pipe, the second exhaust valve is arranged on the second exhaust pipe, and the second heat radiating fin is positioned at the conveying front end of the second exhaust valve.
5. The apparatus for adsorbing hydrogen fluoride from fluorine gas as set forth in claim 1, wherein said first adsorption tank further comprises a first heating element, a heating end of said first heating element being located within said first adsorption tank.
6. The apparatus for adsorbing hydrogen fluoride from a fluorine gas as set forth in claim 5, wherein said second adsorption tank further comprises a second heating element, a heating end of said second heating element being located within said second adsorption tank.
7. The apparatus for adsorbing hydrogen fluoride in fluorine gas according to claim 1, wherein a first connecting valve is provided on the first connecting pipe, and the first connecting valve is used for controlling gas connection or disconnection; the second connecting pipe is provided with a second connecting valve which is used for controlling the connection or disconnection of gas.
8. The apparatus for adsorbing hydrogen fluoride from fluorine gas according to claim 1, wherein the first adsorbent is one of lithium fluoride, potassium fluoride, sodium fluoride, barium fluoride, lithium fluorohydride, potassium fluorohydride and sodium fluorohydride; the second adsorbent is one of lithium fluoride, potassium fluoride, sodium fluoride, barium fluoride, lithium fluorohydride, potassium fluorohydride and sodium fluorohydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223272814.XU CN219355764U (en) | 2022-12-05 | 2022-12-05 | Device for adsorbing hydrogen fluoride in fluorine gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223272814.XU CN219355764U (en) | 2022-12-05 | 2022-12-05 | Device for adsorbing hydrogen fluoride in fluorine gas |
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| Publication Number | Publication Date |
|---|---|
| CN219355764U true CN219355764U (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223272814.XU Active CN219355764U (en) | 2022-12-05 | 2022-12-05 | Device for adsorbing hydrogen fluoride in fluorine gas |
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| CN (1) | CN219355764U (en) |
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- 2022-12-05 CN CN202223272814.XU patent/CN219355764U/en active Active
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