CN218553665U - Gas purification device - Google Patents

Abstract

The utility model discloses a gas purification device, which is used for purifying carbon dioxide and residual water vapor in a gas source, wherein the gas purification device comprises a gas flow pipeline, and a dryer and a purifier which are sequentially arranged on the gas flow pipeline along the gas flow direction; the dryer comprises a first shell, wherein the interior of the first shell is hollow and is used for storing a drying agent; the purifier comprises a second shell, wherein the second shell is hollow inside and is used for storing calcium hydroxide adsorbent and magnesium perchlorate desiccant. The utility model discloses a gas purification device is through earlier with drier dry gas, then carries out the processing technology of purification again, improves the effective live time of calcium hydrate adsorbent and magnesium perchlorate drier, reduces the frequency of changing the purificant, reduces the consumptive material cost, and then reduces the purification cost.

Description

Gas purification device

Technical Field

The utility model relates to a gas purification technical field especially relates to a gas purification device.

Background

At present, an infrared absorption method is mostly used for quantitative analysis of oxygen content in a material, and a thermal conductivity method is mostly used for quantitative analysis of nitrogen and hydrogen elements in the material. Helium is used as a carrier gas for testing when oxygen is analyzed, and nitrogen is used as a carrier gas for detecting when nitrogen and hydrogen are analyzed. Helium or nitrogen used as a carrier gas source for testing contains certain water vapor, and meanwhile, certain water vapor and carbon dioxide are generated in the testing and running processes of the instrument, and the water vapor and the carbon dioxide must be dried and adsorbed, otherwise, the accuracy of a testing result is seriously disturbed under the action of airflow circulation in the instrument, and hot internal elements of the instrument are easily damaged. The technical scheme adopted by the industry at present is that a purifier filled with a magnesium perchlorate desiccant and a calcium hydroxide adsorbent is used for adsorbing moisture and carbon dioxide generated in the testing process of an instrument, so as to achieve the purpose of purifying gas.

However, the purifiers disclosed in the prior art adopt a single purification mode, and the magnesium perchlorate desiccant and the calcium hydroxide adsorbent are consumed at a high speed, so that the replacement frequency is high, the workload of operators is increased, and the material consumption cost is increased, so that the problem of high purification cost still remains to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art not enough, the utility model aims at providing a gas purification device, aims at solving the consumption rate of purifier among the prior art fast, and the cost of labor is high, leads to the problem that the purification is with high costs.

The technical scheme of the utility model as follows:

a gas purification device is used for purifying carbon dioxide and residual water vapor in a gas source, and comprises a gas flow pipeline, and a drier and a purifier which are sequentially arranged on the gas flow pipeline along the gas flow direction; the dryer comprises a first shell, wherein the interior of the first shell is hollow and is used for storing a drying agent; the purifier comprises a second shell, wherein the second shell is hollow inside and is used for storing calcium hydroxide adsorbent and magnesium perchlorate desiccant.

The gas purification device, wherein the first housing is a transparent shell; the desiccant comprises a color-changing silica gel desiccant.

The gas purification apparatus of (1), wherein the dryer comprises a heating element disposed on the first housing for heating the desiccant; the gas purification device further comprises a first valve, an exhaust pipeline and a second valve, wherein the first valve is arranged on the gas flow pipeline and positioned between the dryer and the purifier and used for opening or closing the gas flow pipeline; the exhaust duct is communicated with the gas flow duct and is arranged between the first valve and the dryer; the second valve is disposed on the exhaust pipe for opening or closing the exhaust pipe.

The gas purification device is characterized in that at least two dryers are arranged on the gas flow pipeline at intervals.

The gas purification device, wherein the second housing is a transparent shell.

The gas purification device is characterized in that at least two purifiers are arranged on the gas flow pipeline at intervals.

The gas purification apparatus of (1), wherein the calcium hydroxide adsorbent and the magnesium perchlorate desiccant are stacked in the purifier from bottom to top; the air inlet of the second shell is arranged at the bottom, and the air outlet is arranged at the top.

The gas purification apparatus, wherein the first housing has a spherical shape.

The gas purification apparatus described above, wherein the second housing is spherical in shape.

The gas purification apparatus, wherein the purifier is detachably connected to the gas flow pipe.

Compared with the prior art, the embodiment of the utility model provides a have following advantage:

the utility model discloses a gas purification device sets up desicator and clarifier along gas flow pipeline, carries out the predrying process before the purification. Specifically, the gas source to be purified enters the gas flow pipeline, and the gas source passes through the dryer to adsorb water molecules in the gas to form dried gas, and then enters the purifier, the purifier only needs to adsorb carbon dioxide in the gas, namely, the calcium hydroxide adsorbent in the purifier and the carbon dioxide undergo a chemical reaction to remove the carbon dioxide in the gas, and the magnesium perchlorate desiccant can absorb the water molecules generated in the reaction process of the calcium hydroxide and the carbon dioxide.

The utility model discloses a gas purification device is through drying gas in advance, then carbon dioxide is got rid of to the rethread clarifier, compare in traditional passing through clarifier and removing water and carbon dioxide simultaneously, has alleviateed the work burden of clarifier, has reduced the consumption speed of drier in the clarifier, and then can need not frequently dismouting, change the clarifier, reduce manual operation's work load, reduce the use cost of drier, adsorbent, and then be favorable to reducing the cost of purification processing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a process flow diagram of a gas purification apparatus of the present invention;

fig. 2 is a schematic structural diagram of the gas purification device of the present invention.

10, a gas flow pipeline; 20. a dryer; 21. a first housing; 22. a heating member; 30. a purifier; 31. a second housing; 40. a first valve; 50. an exhaust duct; 60. a second valve.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, in the conventional purification process, a long purifier is generally adopted and uniformly divided into two parts in the radial direction, and a magnesium perchlorate desiccant and a calcium hydroxide adsorbent are respectively filled in the two parts, so that moisture and carbon dioxide generated in the process of testing a carrier gas source and an instrument sequentially pass through the purifier to achieve the purpose of purifying gas. The purification mode is single, the purifier needs to adsorb water and carbon dioxide at the same time, the consumption speed of the magnesium perchlorate and the calcium hydroxide is high, and the purifier is usually manually assembled and disassembled once being used to replace a purifying agent, so the use is inconvenient and the labor cost is high. In addition, the magnesium perchlorate and the calcium hydroxide are expensive and difficult to regenerate and recycle, so that the material cost is increased.

In addition, the existing purifier is designed to be slender, the airflow is not decelerated sufficiently after flowing in, the condition of insufficient absorption is easy to generate, an obvious corner is arranged at the outlet of the purifier, large mechanical stress exists, the working pressure born locally is small, and the condition of explosion of the purifier is easy to generate if the stability of an air source is insufficient in the purification process.

In conclusion, the existing purification process has the problems of high cost and poor purification effect.

Referring to fig. 2, in an embodiment of the present invention, a gas purifying apparatus is disclosed for purifying carbon dioxide and residual water vapor in a gas source, wherein the gas purifying apparatus includes a gas flow pipe 10, and a dryer 20 and a purifier 30 sequentially disposed on the gas flow pipe 10 along a gas flow direction; the dryer 20 includes a first housing 21, the first housing 21 being hollow inside for storing a drying agent; the purifier 30 includes a second housing 31, and the second housing 31 is hollow inside and stores calcium hydroxide adsorbent and magnesium perchlorate desiccant.

The gas purification apparatus disclosed in this embodiment is provided with a dryer 20 and a purifier 30 along a gas flow line 10, and performs a pre-drying process before purification. Specifically, the gas source to be purified enters the gas flow pipeline 10, and passes through the dryer 20 to adsorb water molecules in the gas, and then enters the purifier 30 after becoming dry gas, the purifier 30 only needs to adsorb carbon dioxide in the gas, that is, the calcium hydroxide adsorbent in the purifier 30 and the carbon dioxide undergo a chemical reaction to remove the carbon dioxide in the gas, and the magnesium perchlorate desiccant can absorb water molecules generated in the reaction process of the calcium hydroxide and the carbon dioxide. In the actual operation process, through detecting, the gas purification device that this embodiment disclosed is because the air supply has passed through the drying of desicator 20 earlier, then just through calcium hydroxide and magnesium perchlorate purification, has improved the life that magnesium perchlorate drier and calcium hydroxide adsorbent and is close 100 times, consequently, has solved the technical problem that the material consumption is with high costs in the purification process.

The gas purification device disclosed in this embodiment is through drying gas in advance, then carbon dioxide is got rid of through clarifier 30, compare in traditional passing through clarifier 30 while remove water and carbon dioxide, lightened the work burden of clarifier 30, reduced the consumption speed of desiccator in the clarifier 30, and then can need not frequently dismouting, change clarifier 30, reduce manual operation's work load, reduce the use cost of drier, adsorbent, and then be favorable to reducing the cost of purification processing.

Specifically, as an implementation manner of the present embodiment, it is disclosed that the first casing 21 is a transparent shell; the desiccant comprises a color-changing silica gel desiccant. The allochroic silica gel desiccant used in the present embodiment changes from blue to red in the process of continuously adsorbing moisture, and accordingly, the first casing 21 is a transparent casing, such as a transparent plastic casing, a glass casing, or the like. The operator can visually observe the use condition of the dryer 20 to judge whether the dryer 20 can normally work without additional detection devices or detaching the dryer 20 for observation. That is to say, the allochroic silica gel desiccant filled in the transparent shell adsorbs water vapor, has an indicating function, can be convenient for an operator to monitor the service condition of the dryer 20 in real time, and reduces the dependence degree on the experience and professional level of the operator.

In addition, the allochroic silica gel desiccant has a reminding function in the embodiment, and an operator can be reminded to replace the dryer 20 in time by observing the color of the allochroic silica gel, so that the working efficiency of the gas purification device is ensured.

As another embodiment of the present embodiment, as shown in fig. 2, it is disclosed that the dryer 20 includes a heating member 22 provided on the first housing 21 for heating the drying agent. A specific heating method may be electric heating, and for example, a heating wire may be provided on the first housing 21 to bake.

In this embodiment, if the allochroic silica gel is used as the drying agent, the water vapor in the allochroic silica gel can be baked out by heating, specifically, the water in the allochroic silica gel can be baked out by heating to 100-120 ℃, and the allochroic silica gel gradually changes from red to blue. In this case, the first shell 21 is a transparent shell, and the color of the desiccant can be visually observed, so that the moisture discharge condition in the desiccant can be conveniently and quickly judged, the heating time can be determined accordingly, and the process control precision of drying the desiccant can be improved.

As further shown in fig. 2, the gas purification apparatus further includes a first valve 40, an exhaust gas pipe 50 and a second valve 60, wherein the first valve 40 is disposed on the gas flow pipe 10 between the dryer 20 and the purifier 30 for opening or closing the gas flow pipe 10; the exhaust duct 50 is in communication with the gas flow duct 10, disposed between the first valve 40 and the dryer 20; the second valve 60 is disposed on the exhaust pipe 50 and is used for opening or closing the exhaust pipe 50, and specifically, the second valve 60 is a moisture evacuation valve.

When the gas purification device disclosed in this embodiment performs purification work, the first valve 40 is opened, and the second valve 60 is closed, so that the gas to be purified smoothly enters the purifier 30 for purification; when the dryer 20 is baked, the water vapor in the dryer 20 evaporates and flows along the gas flow pipe 10, at this time, the first valve 40 is closed, and the second valve 60 is opened, so that the water vapor is discharged from the exhaust pipe 50 and does not enter the purifier 30, thereby avoiding affecting the service life of the magnesium perchlorate and the calcium hydroxide in the purifier 30.

It can be seen that this embodiment can obtain through roasting the desicator 20 and exempt from to demolish the function, does not need to dismantle the desicator 20 repeatedly promptly, and every time after desicator 20 absorbed steam and reached saturation, through drying recoverable drying function, saved the manual work and dismantled desicator 20, the trouble of equipment back again, the manual operation's that reduces work load saves the human cost, improves gas purification device's maintenance efficiency moreover.

Specifically, as another embodiment of this embodiment, it is disclosed that at least two dryers 20 are provided, and at least two dryers 20 are arranged on the gas flow pipe 10 at intervals. By increasing the number of dryers 20 in this embodiment, the gas drying effect can be increased to further increase the degree of drying of the gas entering the purifier 30. In addition, two or more dryers 20 are arranged in series, the following dryer 20 plays a role in safety, if the adsorption of the preceding dryer 20 reaches saturation, the preceding dryer 20 is not replaced in time, or the preceding dryer 20 does not reach saturation yet, but the water absorption capacity is large, and under the condition that the water absorption capacity is reduced, the following dryer 20 is used for secondary or multiple drying, so that the drying of the gas entering the purifier 30 can be guaranteed.

Specifically, magnesium perchlorate is placed in the purifier 30 disclosed in this embodiment, and water vapor can be further absorbed, which serves as the last guarantee of the gas purification device to reduce water vapor in the gas flow.

Specifically, as another embodiment of the present embodiment, it is disclosed that the second housing 31 is a transparent housing. The second housing 31 may specifically be a plastic housing, a glass housing, or the like. The purifier 30 disclosed in this embodiment is adsorbing the in-process of carbon dioxide, and calcium hydroxide and magnesium perchlorate also can take place to discolour, consequently, sets up second shell 31 for the transparent service behavior that helps operating personnel to observe purifier 30 to in time change the purifier 30 that reaches life, maintain gas purification device's high-efficient operating condition. In addition, when the second housing 31 is a transparent housing, an operator can observe the color change in the purifier 30 at any time, and the service condition of the purifier 30 is warned through the color change, so that the purifier can be replaced in time.

Specifically, as another embodiment of this embodiment, it is disclosed that at least two purifiers 30 are provided, and at least two purifiers 30 are arranged on the gas flow pipe 10 at intervals. The two or more purifiers 30 disclosed in this embodiment are provided to improve the purification effect and remove carbon dioxide in the gas as cleanly as possible. In addition, at least two purifiers 30 are connected in series, the purification efficiency of the former purifier 30 is reduced after being used for a period of time, or the former purifier 30 is not replaced in time and loses the purification capacity, and the latter purifier 30 plays a role in insurance and purifies the gas for two times or more times so as to guarantee the purification effect of the gas purification device.

As shown in fig. 2 again, as another embodiment of the present embodiment, it is disclosed that the calcium hydroxide adsorbent and the magnesium perchlorate desiccant are stacked in the purifier 30 from bottom to top; the air inlet of the second housing 31 is arranged at the bottom, and the air outlet is arranged at the top. In this embodiment, the purifier 30 is arranged to enter from the bottom when air is introduced, and the air firstly passes through the calcium hydroxide and then passes through the magnesium perchlorate. When calcium hydroxide absorbs carbon dioxide in the gas, chemical combination reaction occurs, and the generated by-products include water molecules, so that water vapor is easily mixed in the purified gas, and the magnesium perchlorate can absorb water molecules, thereby ensuring that the gas passing through the purifier 30 cannot be mixed with water vapor. That is, by providing the gas inlet from the bottom of the purifier 30, passing through the calcium hydroxide and the magnesium perchlorate, and then discharging the gas from the top of the purifier 30, the effect of purifying the gas, adsorbing the carbon dioxide and water in the gas, and simultaneously keeping the gas dry is achieved.

Specifically, as another embodiment of this embodiment, it is disclosed that the first housing 21 has a spherical shape. In addition, the second housing 31 may be formed in a spherical shape. The gas to be purified disclosed in this embodiment is introduced through the gas flow tube 10, and when passing through the spherical dryer 20 or the spherical purifier 30 with a certain pressure, since the radial width of the tube becomes very large, the gas flow rate is remarkably slowed down, and the residence time of the gas in the vessel is extended to sufficiently dry the gas. In addition, the spherical structure is in curved surface transition, and has no obvious corner, so that the internal mechanical stress is minimum, high pressure can be borne, the safety is higher, the potential safety hazard that the traditional gas purification device is easy to crack under high-pressure work is solved, the risk of part damage of the gas purification device is reduced, the maintenance cost is reduced, and the capability of adapting to a use scene is stronger.

Specifically, as another embodiment of this embodiment, it is disclosed that the purifier 30 is detachably connected to the gas flow pipe 10. In the embodiment, the calcium hydroxide adsorbent and the magnesium perchlorate desiccant in the purifier 30 have limited service lives, so that the purifier 30 gradually loses purification capability after working for a period of time, and the purifier 30 is detachably connected with the gas flow pipeline 10, for example, threads are arranged at an inlet and an outlet of the purifier 30 to be in threaded connection, clamping connection, magnetic attraction matching and the like with the gas flow pipeline 10. It is advantageous to replace the purifier 30 in time and maintain the working efficiency of the gas purification apparatus.

Specifically, as another embodiment of the present application, there is disclosed a purification method for a gas purification apparatus as described in any one of the above, including:

s100, conveying a gas source to be purified to a gas flow pipeline 10; and enters the drier 20 along the gas flowing pipeline 10, and the water vapor mixed in the gas is adsorbed by the drier;

s200, conveying the dried gas into a purifier 30 through the gas flow pipeline 10 for purification, and removing carbon dioxide mixed in the gas through a calcium hydroxide adsorbent and a magnesium perchlorate desiccant;

and S300, outputting the purified gas through the gas flow pipeline 10.

Through will treating the gas of purification in proper order in this embodiment and carry out drying and purification, get rid of the water and the carbon dioxide of mixing in the gas, prolonged the effective life of gas purification device moreover, reduce the consumptive material cost of purification material, and then reduced the cost of purification processing.

In summary, the present application discloses a gas purification apparatus for purifying carbon dioxide and residual water vapor in a gas source, which includes a gas flow pipeline 10, and a dryer 20 and a purifier 30 sequentially disposed on the gas flow pipeline 10 along a gas flow direction; the dryer 20 includes a first housing 21, the first housing 21 being hollow inside for storing a drying agent; the purifier 30 includes a second housing 31, and the second housing 31 is hollow inside and stores calcium hydroxide adsorbent and magnesium perchlorate desiccant. The gas purification apparatus disclosed in this embodiment is provided with a dryer 20 and a purifier 30 along a gas flow line 10, and a pre-drying process is performed before purification. Specifically, the gas source to be purified enters the gas flow pipeline 10, and passes through the dryer 20 to adsorb water molecules in the gas, and then enters the purifier 30, the purifier 30 only needs to adsorb carbon dioxide in the gas, that is, the calcium hydroxide adsorbent in the purifier 30 and the carbon dioxide undergo a chemical reaction to remove the carbon dioxide in the gas, and the magnesium perchlorate desiccant can reabsorb water molecules generated in the reaction process of the calcium hydroxide and the carbon dioxide.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the present invention is described with reference to a gas purification apparatus as an example, but the present invention is not limited to the gas purification apparatus, and can also be applied to the production and use of other similar workpieces.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A gas purification device is used for purifying carbon dioxide and residual water vapor in a gas source and is characterized by comprising a gas flow pipeline, and a dryer and a purifier which are sequentially arranged on the gas flow pipeline along the gas flow direction;

the dryer comprises a first shell, wherein the interior of the first shell is hollow and is used for storing a drying agent;

the purifier comprises a second shell, wherein the second shell is hollow inside and is used for storing calcium hydroxide adsorbent and magnesium perchlorate desiccant.

2. The gas purification apparatus of claim 1, wherein the first housing is a transparent shell; the desiccant comprises a color-changing silica gel desiccant.

3. The gas purification apparatus of claim 2, wherein the dryer includes a heating element disposed on the first housing for heating the desiccant;

the gas purification device further comprises a first valve, an exhaust pipeline and a second valve, wherein the first valve is arranged on the gas flow pipeline and positioned between the dryer and the purifier and used for opening or closing the gas flow pipeline;

the exhaust duct is communicated with the gas flow duct and is arranged between the first valve and the dryer; the second valve is disposed on the exhaust pipe for opening or closing the exhaust pipe.

4. The gas purification apparatus according to any one of claims 1 to 3, wherein at least two of the dryers are arranged at intervals on the gas flow conduit.

5. The gas purification apparatus of claim 1, wherein the second enclosure is a transparent shell.

6. The gas purification apparatus according to claim 1, wherein at least two purifiers are provided, and at least two purifiers are arranged at intervals on the gas flow conduit.

7. The gas purification apparatus according to claim 1, wherein the calcium hydroxide adsorbent and the magnesium perchlorate desiccant are stacked in the purifier from bottom to top; the air inlet of the second shell is arranged at the bottom, and the air outlet is arranged at the top.

8. The gas purification apparatus of claim 1, wherein the first housing is spherical in shape.

9. The gas purification apparatus of claim 1, wherein the second housing is spherical in shape.

10. The gas purification apparatus of claim 1, wherein the purifier is removably connected to the gas flow conduit.

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