CN218741156U - Hydrogen fluoride tail gas absorption device - Google Patents

Abstract

The utility model provides a hydrogen fluoride tail gas absorbing device relates to exhaust-gas treatment technical field, including the equipment panel beating, the inboard fixed mounting of equipment panel beating has the polytetrafluoroethylene jar, and the inboard fixed mounting in polytetrafluoroethylene tank deck end has dry storehouse shell spare. The utility model discloses, put pressure boost pipe to one side in with the leading-in reaction storehouse of outside air, can not only with ascending hydrogen fluoride waste gas convection current down from last, make hydrogen fluoride gas pressure adsorb in to solid sorbent, and can also promote the ring piece rotation through a plurality of boards of putting to one side from last air down, thereby make a plurality of stirring leaves stir solid sorbent, promote its adsorption efficiency, it need not to add driving motor to stir solid sorbent, and polytetrafluoroethylene jar, dry storehouse shell spare, pneumatic stirring spare is made by the polytetrafluoroethylene material that can not be corroded by hydrogen fluoride, avoided the pivot to be corroded and damaged, increase frequency of maintenance's problem.

Description

Hydrogen fluoride tail gas absorption device

technical field

The utility model relates to the technical field of waste gas treatment, in particular to a hydrogen fluoride tail gas absorption device.

Background technique

Hydrogen fluoride waste gas mainly comes from the aluminum electrolysis and steelmaking processes in the metallurgical industry. Hydrogen fluoride waste gas is very harmful to animals and plants and is a harmful air pollutant. Therefore, hydrogen fluoride waste gas must be absorbed and purified before it can be discharged into the atmosphere.

For example, the Chinese patent number is: CN210385463U "A device for preparing hydrogen fluoride tail gas absorption", including a tail gas treatment box, the inside of the tail gas treatment box is provided with a reaction chamber, the top surface of the tail gas treatment box is provided with a drive motor, and the lower end of the drive motor drives the shaft There is a stirring plate on the top, the stirring plate is inside the reaction chamber, and the drive shaft at the lower end of the drive motor is plugged into the inside of the limiter, the limiter is fixed on the inner wall of the reaction chamber, and the bottom surface of the reaction chamber is provided with a drain valve tube , and a filter plate is arranged on the inner wall of the exhaust gas treatment box, and the filter plate is located above the reaction chamber.

However, in the prior art, hydrofluoric acid can corrode metals, silicon-containing organic or inorganic materials, and the drive shaft connected to the drive motor is installed in the reaction chamber for absorbing hydrogen fluoride, which is very easy to be corroded and damaged during use, which not only affects The efficiency of purification and absorption will also increase the daily maintenance cost of equipment.

Utility model content

The purpose of this utility model is to solve the problem that hydrofluoric acid can corrode metals, silicon-containing organic or inorganic materials in the existing technology. A drive shaft connected to a drive motor is installed in the reaction chamber for absorbing hydrogen fluoride, which is very easy to use. Corrosion and damage during the process will not only affect the purification and absorption efficiency, but also increase the daily maintenance cost of the equipment, so the proposed hydrogen fluoride tail gas absorption device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: hydrogen fluoride exhaust gas absorption device, including equipment sheet metal, the inner side of the equipment sheet metal is fixedly installed with a polytetrafluoroethylene tank, and the inner side of the top of the polytetrafluoroethylene tank is fixedly installed There is a dry chamber shell, the top of the polytetrafluoroethylene tank is provided with a reaction chamber, and the bottom of the polytetrafluoroethylene tank is provided with a cooling chamber, and a scroll inlet pipe is fixedly installed in the cooling chamber. Pneumatic stirring parts are installed, and the top of the reaction chamber is uniformly fixed and connected with a plurality of oblique pressurization pipes. A chute is opened inside the reaction chamber. The grooves are slidingly connected, and the top of the ring is evenly welded with a plurality of inclined plates, and the bottom of the ring is evenly welded with a plurality of stirring blades.

Preferably, a plurality of rollers are installed on the outer side of the ring to rotate evenly, and the outer side of each roller is slidingly connected to the inner side of the chute.

Preferably, the top end of the scroll inlet tube is plugged into the bottom of the reaction chamber, the top end of the sheet metal of the equipment is fixedly equipped with a cover, and an output tube is welded on the cover.

Preferably, an air introduction assembly is fixedly installed on the polytetrafluoroethylene tank, and the air introduction assembly includes a booster pump and an annular pipe, the booster pump communicates with the annular pipe, and each inclined booster pipe All communicate with the ring pipe.

Preferably, a plurality of through holes are uniformly opened on the outer bottom of the drying case, and the bottom end of the drying case is connected to a bottom pipe.

Preferably, the bottom end of the bottom pipe is connected to the cooling bin, and the bottom end of the cooling bin is connected to a discharge pipe, and a valve is installed on the discharge pipe.

Preferably, the outer wall of the annular pipe and the equipment sheet metal are fixed and installed by bolts.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. In the utility model, the oblique pressurized pipe introduces the external air into the reaction chamber, and the air from top to bottom can not only convect with the upward hydrogen fluoride waste gas, but also press the hydrogen fluoride gas into the solid adsorbent for adsorption treatment, and from The air from top to bottom can also push the ring to rotate through multiple inclined plates, so that multiple stirring blades can stir the solid adsorbent to improve its adsorption efficiency. There is no need to add a drive motor to stir the solid adsorbent, and the polytetrafluoroethylene The tank, drying chamber shell, and pneumatic stirring parts are all made of polytetrafluoroethylene that will not be corroded by hydrogen fluoride, which avoids the problem of corrosion damage to the rotating shaft and increased maintenance frequency.

2. In this utility model, the purified gas is introduced into the drying chamber through multiple through holes, and the bottom pipe can guide the moisture generated by the drying air into the bottom cooling chamber for storage, and the recovered moisture can be used for hydrogen fluoride waste gas Cooling, more energy saving and environmental protection.

Description of drawings

Fig. 1 is the sectional perspective view of hydrogen fluoride tail gas absorption device proposed by the utility model;

Fig. 2 is the sectional front view of the hydrogen fluoride tail gas absorption device proposed by the utility model;

Fig. 3 is the dismantling schematic diagram of the hydrogen fluoride tail gas absorption device proposed by the utility model;

Fig. 4 is a perspective view of the pneumatic stirring member of the hydrogen fluoride tail gas absorbing device proposed by the utility model.

Legend: 1. Equipment sheet metal; 2. Cover; 20. Output pipe; 3. Scroll inlet pipe; 4. Teflon tank; 40. Cooling chamber; 41. Discharge pipe; 410. Valve; 42 , reaction chamber; 420, chute; 5, drying chamber shell; 50, through hole; 51, bottom pipe; 6, air introduction component; 60, annular pipe; ; 7, pneumatic stirring piece; 70, ring piece; 71, roller; 72, stirring blade; 73, inclined plate.

Detailed ways

In order to understand more clearly the above purpose, features and advantages of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways that are different from those described here. Therefore, the utility model is not limited to the specific details of the following disclosure EXAMPLE LIMITATIONS.

Please refer to Figures 1-3, the utility model provides a technical solution: a hydrogen fluoride exhaust gas absorption device, including an equipment sheet metal 1, a polytetrafluoroethylene tank 4 is fixedly installed on the inner side of the equipment sheet metal 1, and the polytetrafluoroethylene tank 4 A drying chamber shell 5 is fixedly installed on the inner side of the top, a reaction chamber 42 is arranged on the top of the polytetrafluoroethylene tank 4, and a cooling chamber 40 is arranged at the bottom of the polytetrafluoroethylene tank 4, and a scroll inlet pipe 3 is fixedly installed in the cooling chamber 40 , the reaction chamber 42 is equipped with a pneumatic agitator 7, and the top of the reaction chamber 42 is uniformly fixed and connected with a plurality of oblique pressurized pipes 61, and the inner side of the reaction chamber 42 is provided with a chute 420, and the pneumatic agitator 7 includes a ring 70 , the outer side of the ring 70 is slidably connected with the chute 420, and the top of the ring 70 is evenly welded with a plurality of inclined plates 73, and the bottom of the ring 70 is evenly welded with a plurality of stirring blades 72, and the top of the scroll guide pipe 3 is inserted into the At the bottom of the reaction chamber 42, a cover 2 is fixedly installed on the top of the equipment sheet metal 1, and an output pipe 20 is welded on the cover 2; the device is provided with a polytetrafluoroethylene structure that will not be corroded by hydrogen fluoride, such as polytetrafluoroethylene Ethylene tank 4, drying chamber shell 5, pneumatic agitator 7, hydrogen fluoride is taken out by adsorption purification method, and the adsorption purification method is to absorb hydrogen fluoride-containing waste gas by filling solid adsorbent to achieve the purpose of defluorination, and industrial alumina can be used , calcium oxide and calcium hydroxide as adsorbents. When the device is in use, solid adsorbent is filled in the reaction chamber 4, clear water is poured into the cooling chamber 40, and when hydrogen fluoride waste gas is introduced through the vortex introduction pipe 3, at first, after being cooled in the cooling chamber 40, from It is discharged into the reaction chamber 42 from bottom to top. At the same time, a plurality of oblique pressurized pipes 61 introduce the external air into the reaction chamber 4. The air from top to bottom can not only convect with the upward hydrogen fluoride waste gas, but also make the hydrogen fluoride gas pressurized to a solid state. The adsorption process is carried out in the adsorbent, and the air from top to bottom can also push the ring 70 to rotate through a plurality of inclined plates 73, so that the plurality of stirring blades 72 at the bottom of the ring 70 can affect the solid adsorbent in the reaction chamber 4. Agitation is performed to improve the adsorption efficiency. Then, the air after being adsorbed and purified will pass through the activated carbon in the drying chamber 5 and then be discharged from the top output pipe 20 .

As shown in FIG. 4 , a plurality of rollers 71 are mounted on the outer side of the ring 70 to rotate evenly, and the outer side of each roller 71 is slidingly connected to the inner side of the chute 420 . The rollers 71 can reduce the friction force when the ring 70 rotates.

As shown in Figures 2 and 4, an air introduction assembly 6 is fixedly installed on the polytetrafluoroethylene tank 4. The air introduction assembly 6 includes a booster pump 62 and an annular pipe 60. The outer wall of the annular pipe 60 is connected to the equipment sheet metal 1 through bolts. Fixed installation, the booster pump 62 is connected with the annular pipe 60, and each inclined booster pipe 61 is connected with the annular pipe 60, after the booster pump 62 inhales the outside air, it is introduced by the annular pipe 60 to a plurality of oblique boosters. In the pressure tube 61, and from the reaction chamber 4, the downward oblique side ejection.

As shown in Fig. 1, Fig. 2 and Fig. 3, a plurality of through-holes 50 are evenly opened on the outer bottom of the drying case 5, and the bottom of the drying case 5 is connected with a bottom pipe 51, and the plurality of through-holes 50 are used for When circulating the purified gas, the bottom pipe 51 can introduce the moisture generated by the dry air into the bottom cooling chamber 40 to cool the hydrogen fluoride waste gas by using the recovered moisture.

As shown in Fig. 1, Fig. 2 and Fig. 3, the bottom end of the bottom pipe 51 is connected with the cooling chamber 40, and the bottom end of the cooling chamber 40 is connected with a discharge pipe 41, and a valve 410 is installed on the discharge pipe 41, which can pass through Open the valve 410 to discharge the sewage in the cooling chamber 40 .

The use method and working principle of this device: when this device is in use, solid adsorbent is filled in the reaction chamber 4, clear water is poured into the cooling chamber 40, and when the hydrogen fluoride waste gas is introduced through the scroll inlet pipe 3, first, the After being cooled in the cooling chamber 40, it is discharged into the reaction chamber 42 from bottom to top. At the same time, a plurality of inclined pressurized pipes 61 introduce the outside air into the reaction chamber 4. The air from top to bottom can not only mix with the upward hydrogen fluoride Exhaust gas convection, so that hydrogen fluoride gas is pressed into the solid adsorbent for adsorption treatment, and the air from top to bottom can also push the ring 70 to rotate through multiple inclined plates 73, so that the multiple stirring blades 72 at the bottom of the ring 70 Stir the solid adsorbent in the reaction chamber 4 to increase its adsorption efficiency, and then the air after being adsorbed and purified will pass through the activated carbon in the drying chamber shell 5 and be discharged from the top output pipe 20.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. The equivalent embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present utility model still belong to the technical solution of the present utility model scope of protection.

Claims (7)

1. Hydrogen fluoride exhaust gas absorption device, including the equipment sheet metal (1), characterized in that: the inner side of the equipment sheet metal (1) is fixedly installed with a polytetrafluoroethylene tank (4), and the polytetrafluoroethylene tank (4) A drying chamber shell (5) is fixedly installed on the inner side of the top, a reaction chamber (42) is provided on the top of the polytetrafluoroethylene tank (4), and a cooling chamber (40) is provided at the bottom of the polytetrafluoroethylene tank (4), The cooling chamber (40) is fixedly installed with a vortex inlet pipe (3), and the reaction chamber (42) is equipped with a pneumatic agitator (7) movable, and the top of the reaction chamber (42) is evenly fixed and inserted with multiple A slanted pressurized pipe (61), a chute (420) is opened on the inside of the reaction chamber (42), the pneumatic agitator (7) includes a ring (70), and the outside of the ring (70) It is slidingly connected with the chute (420), and the top of the ring (70) is uniformly welded with a plurality of inclined plates (73), and the bottom of the ring (70) is evenly welded with a plurality of stirring blades (72). 2. The hydrogen fluoride tail gas absorption device according to claim 1, characterized in that: a plurality of rollers (71) are installed on the outer side of the ring (70) to rotate evenly, and the outer side of each roller (71) is on a sliding The inside of the groove (420) is slidingly connected. 3. The hydrogen fluoride tail gas absorption device according to claim 1, characterized in that: the top of the scroll inlet pipe (3) is inserted into the bottom of the reaction chamber (42), and the top of the equipment sheet metal (1) is fixedly installed with The cover (2), and the output tube (20) is welded on the cover (2). 4. The hydrogen fluoride tail gas absorption device according to claim 1, characterized in that: an air introduction component (6) is fixedly installed on the polytetrafluoroethylene tank (4), and the air introduction component (6) includes a pressurized A pump (62), an annular pipe (60), the booster pump (62) communicates with the annular pipe (60), and each inclined booster pipe (61) communicates with the annular pipe (60). 5. The hydrogen fluoride tail gas absorption device according to claim 1, characterized in that: a plurality of through holes (50) are uniformly opened on the outer bottom of the drying case (5), and the bottom of the drying case (5) It is connected with bottom pipe (51). 6. The hydrogen fluoride tail gas absorption device according to claim 5, characterized in that: the bottom end of the bottom pipe (51) is connected to the cooling bin (40), and the bottom end of the cooling bin (40) is connected to a discharge pipe (41), a valve (410) is installed on the discharge pipe (41). 7. The hydrogen fluoride tail gas absorption device according to claim 4, characterized in that: the outer wall of the annular pipe (60) and the equipment sheet metal (1) are fixed and installed by bolts.

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