CN215876807U - Alkali steam purifies discharging equipment - Google Patents

Abstract

The utility model provides an alkali steam purification and discharge device, which comprises a water seal box, an air inlet pipe, a guide cover and an exhaust pipe, wherein the water seal box is arranged in the water seal box; a storage space for storing water is arranged in the water seal tank, and a water supply port for supplying water to the storage space is arranged on the water seal tank; the air inlet pipe comprises an air inlet end and an air outlet end which are oppositely arranged, the air outlet end of the air inlet pipe is positioned in the storage space and is communicated with the storage space, and the air inlet end of the air inlet pipe is used for being connected with the alkali steam discharging device; the guide cover is arranged in the storage space and covers the air inlet pipe, a guide space is enclosed between the guide cover and the water seal tank, a guide opening communicating the guide space and the guide space is arranged on the guide cover, and the guide opening is positioned below the air outlet end of the air inlet pipe; the exhaust pipe is arranged at the top of the water seal box and communicated with the storage space. The device can purify the alkali steam and reduce the pollution to the surrounding air caused by the discharge of the alkali steam.

Description

Alkali steam purifies discharging equipment

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to an alkali steam purification and discharge device.

Background

In the production of alumina, red mud is a solid waste discharged in the industrial production process of alumina smelting, and is a serious alkaline pollution source. In order to preliminarily dealkalize the red mud and reduce pollution emission, the red mud is washed by water with the temperature of 95 ℃, and a large amount of alkali steam is generated in the red mud washing water heated by a heater and a washing water tank to seriously pollute the quality of surrounding air.

In the prior art, a hole is usually directly formed in the top of a red mud washing water tank to serve as an exhaust pipe, alkali steam generated by heated red mud washing water is directly discharged into the atmosphere, peripheral air is polluted, the life of peripheral residents is influenced, and potential safety hazards also exist in inspection, overhaul and the like of staff due to the large amount of discharged alkali steam.

Disclosure of Invention

The present invention is directed to solve at least one of the above problems, and provides an alkali vapor purifying and discharging device, which can purify alkali vapor and reduce the pollution of the discharged alkali vapor to the surrounding air.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

an alkaline vapor purge drain comprising:

the water seal tank is internally provided with a storage space for storing water, and the water seal tank is provided with a water supply port for supplying water to the storage space;

the gas inlet pipe comprises a gas inlet end and a gas outlet end which are oppositely arranged, the gas outlet end of the gas inlet pipe is positioned in the storage space and communicated with the storage space, and the gas inlet end of the gas inlet pipe is used for being connected with the alkali steam discharging device;

the guide cover is arranged in the storage space and covers the air inlet pipe, a guide space is enclosed between the guide cover and the water seal tank, a guide opening communicated with the guide space and the guide space is arranged on the guide cover, and the guide opening is positioned below the air outlet end of the air inlet pipe; and

the exhaust pipe is arranged at the top of the water seal box and communicated with the storage space.

Furthermore, the alkali vapor purification and discharge device also comprises a return blocking piece, wherein the return blocking piece comprises a return blocking table and a plurality of fixing rods, the fixing rods are arranged at intervals around the exhaust pipe, one end of each fixing rod is connected with the top of the exhaust pipe, and an exhaust port is formed between every two adjacent fixing rods; the baffle table is connected with one end of the fixed rod, opposite to the exhaust pipe, and an inclined guide surface is arranged on the peripheral wall of the baffle table so as to guide water condensed on the baffle table to the exhaust pipe.

Furthermore, an overflow port communicated with the storage space is further arranged on the water seal box, and the height position of the overflow port is located between the guide port and the air outlet end of the air inlet pipe.

Further, alkali vapor purifies discharging equipment still includes the support frame, and the support frame is located storage space, and the guide cover is fixed in the water seal box through the support frame.

Furthermore, the support frame comprises a plurality of stand columns, support flanges and connecting rods, the stand columns are arranged at intervals around the outer periphery of the guide cover, and the bottom ends of the stand columns are fixedly connected with the inner bottom wall of the water seal box; the supporting flange is sleeved outside the air inlet pipe, and the peripheral wall of the supporting flange is fixedly connected with the plurality of stand columns; the air inlet pipe is provided with a plurality of connecting rods, the connecting rods are arranged around the outer periphery of the air inlet pipe at intervals, one end of each connecting rod is fixedly connected with the supporting flange, and the other end of each connecting rod is fixedly connected with the outer peripheral wall of the air inlet pipe; the guide cover is supported on the supporting flange and is fixedly connected with the supporting flange; a communicating opening is formed between the supporting flange and the connecting rod in a surrounding mode, and the guide opening is communicated with the storage space through the communicating opening.

Furthermore, the bottom of the water seal box is also provided with a water outlet, and the water outlet is provided with a water outlet control valve for controlling the on-off of the water outlet.

Furthermore, the water supply port is arranged at the top of the water seal box, and a water supply control valve for controlling the on-off of the water supply port is arranged at the water supply port.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

1. above-mentioned alkali steam purifies discharging equipment utilizes the water in the water seal box to cool off alkali steam and to dissolve the gas after the back exhaust purification of the alkaline composition in the alkali steam, prevents that alkali steam from directly discharging to the air in, greatly reduced the air output, reduce alkali steam and discharge and cause the pollution to peripheral air, improved peripheral air quality, and the potential safety hazard that the staff exists when the operation such as patrolling and examining, overhauing at aluminium oxide production facility periphery also improves. Meanwhile, the guide cover which is arranged in the storage space and covers the air inlet pipe is arranged, so that the contact time of the alkali steam and the water in the water seal box can be prolonged, and the purification effect is further improved.

2. Above-mentioned alkali steam purifies discharging equipment, it still includes and returns and keeps off the piece, gas after the purification rises to keeping off the piece and being kept off the platform and block back along the blast pipe, if contain steam in the gas after the purification, steam meets the condensation and becomes water, the water droplet that forms gets into the blast pipe along the spigot surface that keeps off the platform back to finally fall into the water seal incasement in order to realize reuse, the consumption of water has been reduced, be favorable to resources are saved, and gas after the purification then discharges to the external world through the discharge port that keeps off the piece back.

Drawings

FIG. 1 is a schematic front view of an alkali vapor purge discharging device according to a preferred embodiment of the present invention.

FIG. 2 is an exploded view of the support frame and the guiding cover of the alkali vapor purification and discharge device shown in FIG. 1.

Fig. 3 is a top view of the support stand shown in fig. 2.

FIG. 4 is a schematic top view of the support frame, the guide cover and the air inlet pipe of the alkali vapor purification and discharge device shown in FIG. 1.

Fig. 5 is a schematic top view of the alkali vapor purge drain apparatus shown in fig. 1.

Fig. 6 is a schematic view showing a state of use of the alkali vapor purge discharging device shown in fig. 1, in which a dotted line with an arrow indicates a flow direction of the alkali vapor.

Description of the main elements

10. Water sealing the tank; 12. a water supply port; 14. a water discharge outlet; 16. an overflow port; 18. a fixing hole; 20. an air inlet pipe; 21. an air inlet end; 23. an air outlet end; 30. a guide cover; 32. a guide space; 34. a guide port; 36. an end plate; 37. a side plate; 38. a guide space; 40. an exhaust pipe; 50. a support frame; 52. a column; 54. a support flange; 56. a connecting rod; 57. a communication port; 60. a return stop member; 62. a back stop table; 64. fixing the rod; 65. an exhaust port; 67. a guide surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a preferred embodiment of the present invention provides an alkali vapor purifying and discharging device, which includes a water-sealed tank 10, an air inlet pipe 20, a guide cover 30 and an air outlet pipe 40.

A storage space (not shown) for storing water is provided in the watertight box 10, and a water supply port 12 for supplying water to the storage space is provided in the watertight box 10. In this embodiment, the water supply port 12 is provided at the top of the water sealed tank 10, and a water supply control valve (not shown) for controlling the opening and closing of the water supply port 12 is provided at the water supply port 12. The bottom of the water seal box 10 is also provided with a water outlet 14, a water discharge control valve for controlling the on-off of the water outlet 14 is arranged at the water outlet 14, and water in the storage space can be discharged through the water outlet 14. The water supply control valve and the water discharge control valve can adopt water valves and the like in the prior art, which belong to the prior art and are not described herein for omitting the space. In the present embodiment, the watertight box 10 is further provided with an overflow port 16 communicating with the storage space, and the overflow port 16 is located at a height position between the water supply port 12 and the water discharge port 14. The overflow port 16 is normally open.

The air inlet pipe 20 comprises an air inlet end 21 and an air outlet end 23 which are oppositely arranged, the air outlet end 23 of the air inlet pipe 20 is positioned in the storage space and communicated with the storage space, and the air inlet end 21 of the air inlet pipe 20 is used for being connected with an alkali steam discharging device, for example, an air outlet hole of a red mud washing tank. In the present embodiment, the air inlet pipe 20 is fixedly connected to the water seal tank 10, specifically: the bottom wall of the water seal box 10 is provided with a fixing hole 18 in a through manner, and the air inlet pipe 20 penetrates through the fixing hole 18 and is fixedly connected with the hole wall which is enclosed to form the fixing hole 18.

The guide cover 30 is installed in the storage space and covers the air inlet pipe 20, a guide space 32 is defined between the guide cover 30 and the air inlet pipe 20, a guide space 38 is defined between the guide cover 30 and the water seal box 10, a guide opening 34 communicating the guide space 32 and the guide space 38 is formed in the guide cover 30, and the guide opening 34 is located below the air outlet end 23 of the air inlet pipe 20.

Referring to fig. 2, in the present embodiment, the guide cover 30 is substantially in the shape of a hollow cylinder with one open end, and includes an end plate 36 and a side plate 37 vertically connected to the periphery of the end plate 36, wherein the side plate 37 surrounds the guide opening 34 opposite to one side of the end plate 36. The guide cover 30 is sleeved outside the air inlet end 21 of the air inlet pipe 20, and the guide opening 34 is spaced from the inner bottom wall of the water seal box 10. The end plate 36 is spaced from the inlet end 21 of the inlet pipe 20, and the side plate 37 is spaced from the outer peripheral wall of the inlet pipe 20 to form the guide space 32. The end plate 36 and the side plate 37 of the guide hood 30 are both spaced from the inner wall of the water sealed box 10 to form the guide space 38 for the alkali vapor to pass through between the guide hood 30 and the water sealed box 10. The guiding opening 34 is located on the side of the overflow opening 16 facing away from the air outlet end 23 of the air inlet pipe 20, i.e. the overflow opening 16 is located at a height position between the guiding opening 34 and the air outlet end 23 of the air inlet pipe 20.

In this embodiment, the alkali vapor purification and discharge device further includes a support frame 50, the support frame 50 is located in the storage space, and the guide cover 30 is fixed in the water sealed box 10 through the support frame 50. Referring to fig. 3 and 4, in the present embodiment, the supporting frame 50 includes a column 52, a supporting flange 54 and a connecting rod 56. The number of the upright columns 52 is multiple, the upright columns 52 are arranged around the outer periphery of the guide cover 30 at intervals, and the bottom ends of the upright columns 52 are fixedly connected with the inner bottom wall of the water seal box 10; the supporting flange 54 is sleeved outside the air inlet pipe 20, the outer peripheral wall of the supporting flange 54 is fixedly connected with the plurality of columns 52, and a gap is reserved between the supporting flange 54 and the air inlet pipe 20; the connecting rods 56 are arranged in a plurality of numbers, the connecting rods 56 are arranged around the outer periphery of the air inlet pipe 20 at intervals, one end of each connecting rod 56 is fixedly connected with the supporting flange 54, and the other end of each connecting rod 56 is fixedly connected with the outer peripheral wall of the air inlet pipe 20. The guide cover 30 is covered outside the air inlet pipe 20 through the guide opening 34, and the side plate 37 of the guide cover 30 is supported on the support flange 54 and fixedly connected with the support flange 54; the support flange 54 and the connecting rod 56 enclose a communication opening 57, and the guide opening 34 can be communicated with the storage space of the water seal tank 10 through the communication opening 57.

The exhaust pipe 40 is installed at the top of the water sealed tank 10 and communicates with the storage space. In the present embodiment, the exhaust pipe 40 is provided coaxially with the intake pipe 20. The alkali vapor purification and discharge device further includes a blocking member 60, and referring to fig. 5, the blocking member 60 includes a blocking table 62 and a plurality of fixing rods 64, the fixing rods 64 are disposed around the exhaust pipe 40 at intervals, one end of each fixing rod is connected to the top of the exhaust pipe 40, an exhaust port 65 is formed between two adjacent fixing rods 64, and the exhaust port 65 is communicated with the exhaust pipe 40. In the present embodiment, the backstop 62 is formed in a substantially inverted circular truncated cone shape, the outer peripheral wall of the backstop 62 is connected to one end of the fixing rod 64 opposite to the exhaust pipe 40, and the outer peripheral wall of the backstop 62 is formed with an inclined guide surface 67 so that the cross section of the backstop 62 is gradually increased in a direction away from the water seal box 10, thereby guiding the water condensed on the backstop 62 to the exhaust pipe 40.

Referring to fig. 1 and 6, when the alkali vapor purification and discharge device is used, water is introduced into the water sealed tank 10 through the water supply port 12, and when the liquid level in the water sealed tank 10 is located at the overflow port 16, high-temperature alkali vapor is discharged from an exhaust port of the alkali vapor discharge device, for example, a red mud washing tank, and enters the air inlet pipe 20 of the alkali vapor purification and discharge device through the air inlet end 21 of the air inlet pipe 20. The high temperature alkali vapor moves upwards along the air inlet pipe 20 and enters the guide space 32 between the guide cover 30 and the air inlet pipe 20 through the air outlet end 23 of the air inlet pipe 20; the high temperature alkali steam enters the guide space 32 and then enters the water downwards along the guide space 32, and then enters the guide space 38 between the water seal box 10 and the guide cover 30 through the guide port 34, in the process, the high temperature alkali steam is cooled by the water, alkaline substances contained in the high temperature alkali steam are dissolved in the water, impurities contained in the high temperature alkali steam are also precipitated in the water, and then the precipitated impurities can be discharged to a trench together with the water through the overflow port 16 or the water discharge port 14, so that the high temperature alkali steam is purified, and the purified gas moves upwards along the guide space 38 and is discharged upwards through the exhaust pipe 40. The purified gas may contain a part of water vapor, when the water vapor moves upward along the exhaust pipe 40, the water vapor contacts the backstop 62, and then condenses on the backstop 62 to form condensed water, the condensed water flows back to the exhaust pipe 40 along the guide surface 67 of the backstop 62 and enters the water-sealed box 10 through the exhaust pipe 40 for recycling, and the purified gas is exhausted to the outside through the exhaust port 65 of the backstop 60.

The liquid level height (water seal height) in the water seal tank 10 is related to the air pressure change, water evaporation rate, water loss and the like in the water seal tank 10, and the water seal height cannot be too high or too low: if the water seal height is too high, the purified steam cannot be discharged through the water seal, and solid impurities in the steam are easily deposited at the bottom of the water seal box 10 to cause the blockage of the water seal box 10; the height of the water seal is too low, gas in the water seal box 10 is easy to overcome hydrostatic pressure of the water seal and is directly discharged into air, and the effect of the water seal is invalid, so that pollution is caused. The liquid level in the water seal box 10 can be specifically set according to actual conditions, and the overflow port 16 is set at a preset water seal height position, so that when the water seal box is used, the arrangement of the overflow port 16 can ensure that the liquid level in the water seal box 10 is not greater than the preset water seal height. When a worker observes that the water seal height in the water sealed tank 10 is lower than a preset range, water can be supplied into the water sealed tank 10 through the water supply port 12. It will be appreciated that in other embodiments, a liquid level meter for detecting the liquid level in the water sealed box 10 may be installed on the water sealed box 10, so that a worker can judge whether to supplement water into the water sealed box 10.

Above-mentioned alkali steam purifies discharging equipment utilizes the water in the water seal box 10 to cool off alkali steam and dissolve the gas after the absorption is discharged to the alkaline composition in the alkali steam after the purification, prevents that alkali steam from directly discharging to the air in, greatly reduced the air output, reduce alkali steam and discharge and cause the pollution to peripheral air, improved peripheral air quality, and the staff is peripheral to be patrolled and examined, the potential safety hazard that exists when overhauing etc. the operation is also improved at aluminium oxide production facility. Meanwhile, the guide cover 30 installed in the storage space and covering the air inlet pipe 20 is provided, so that the contact time between the alkali vapor and the water in the water-sealed tank 10 can be prolonged, and the purification effect can be further improved.

The alkali steam purification and discharge device further comprises a blocking piece 60, purified gas rises to the blocking piece 60 along the exhaust pipe 40 and is blocked by the blocking piece 62, if the purified gas contains water vapor, the water vapor is condensed into water when meeting the condensation, and formed condensed water enters the exhaust pipe 40 along the guide surface 67 of the blocking piece 62 and finally falls into the water seal box 10 to be recycled, so that the consumption of the water is reduced, and the resource saving is facilitated.

The alkali steam purification and discharge device is characterized in that the guide hood 30 and the air inlet pipe 20 and the guide hood 30 and the water seal tank 10 are connected through the outer support frame 50, so that the structural stability of the alkali steam purification and discharge device can be further improved.

Above-mentioned alkali vapor purifies discharging equipment, blast pipe 40 and intake pipe 20 coaxial setting for blast pipe 40 staggers with guide space 38, can prolong the time of the steam after the purification in water-sealed box 10, more is favorable to the condensation backward flow of vapor.

It is understood that the backstop 62 may be other shapes, such as an inverted cone, etc.

It is understood that the structure of the support frame 50 is not limited to the embodiment, as long as the guide cover 30 can be fixed in the water sealed tank 10 and the guide cover 30 is communicated with the water sealed tank 10.

It is understood that the shape of the guide cover 30 is not limited to the embodiment, the guide cover 30 may be directly fixed in the water seal tank 10, and the guide port 34 may be opened through the side plate 37 of the guide cover 30.

The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (7)

1. An alkali vapor purge drain, comprising:

the water seal tank (10), a storage space for storing water is arranged in the water seal tank (10), and a water supply port (12) for supplying water to the storage space is arranged on the water seal tank (10);

the alkali vapor discharging device comprises an air inlet pipe (20), wherein the air inlet pipe (20) comprises an air inlet end (21) and an air outlet end (23) which are oppositely arranged, the air outlet end (23) of the air inlet pipe (20) is positioned in a storage space and communicated with the storage space, and the air inlet end (21) of the air inlet pipe (20) is used for being connected with the alkali vapor discharging device;

the water seal tank comprises a guide cover (30), the guide cover (30) is arranged in a storage space and covers the air inlet pipe (20), a guide space (32) is enclosed between the guide cover (30) and the air inlet pipe (20), a guide space (38) is enclosed between the guide cover (30) and the water seal tank (10), a guide opening (34) communicated with the guide space (32) and the guide space (38) is formed in the guide cover (30), and the guide opening (34) is located below an air outlet end (23) of the air inlet pipe (20); and

and the exhaust pipe (40) is arranged at the top of the water seal box (10) and is communicated with the storage space.

2. The alkali vapor purification discharge device as claimed in claim 1, wherein the alkali vapor purification discharge device further comprises a back blocking member (60), the back blocking member (60) comprises a back blocking platform (62) and a plurality of fixing rods (64), the plurality of fixing rods (64) are arranged around the exhaust pipe (40) at intervals, one end of each fixing rod is connected with the top of the exhaust pipe (40), and an exhaust port (65) is formed between two adjacent fixing rods (64); the backstop table (62) is connected with one end, opposite to the exhaust pipe (40), of the fixing rod (64), and an inclined guide surface (67) is arranged on the outer peripheral wall of the backstop table (62) so as to guide water condensed on the backstop table (62) to the exhaust pipe (40).

3. The alkali vapor purification discharge device as claimed in claim 1, wherein the water seal tank (10) is further provided with an overflow port (16) communicated with the storage space, and the overflow port (16) is located at a height position between the guide port (34) and the air outlet end (23) of the air inlet pipe (20).

4. The alkali vapor purification discharge device as set forth in claim 1, further comprising a support frame (50), wherein the support frame (50) is located in the storage space, and the guide cover (30) is fixed in the water seal tank (10) through the support frame (50).

5. The alkali vapor purge drain device according to claim 4, wherein the support bracket (50) comprises a plurality of columns (52), a support flange (54) and a connecting rod (56), the number of columns (52) is plural, the plurality of columns (52) are arranged around the outer periphery of the guide cover (30) at intervals, and the bottom ends of the columns (52) are fixedly connected with the inner bottom wall of the water seal box (10); the supporting flange (54) is sleeved outside the air inlet pipe (20), and the peripheral wall of the supporting flange (54) is fixedly connected with the plurality of stand columns (52); the number of the connecting rods (56) is multiple, the connecting rods (56) are arranged around the outer periphery of the air inlet pipe (20) at intervals, one end of each connecting rod (56) is fixedly connected with the supporting flange (54), and the other end of each connecting rod (56) is fixedly connected with the outer peripheral wall of the air inlet pipe (20); the guide cover (30) is supported on the supporting flange (54) and is fixedly connected with the supporting flange (54); a communication opening (57) is enclosed between the support flange (54) and the connecting rod (56), and the guide opening (34) is communicated with the storage space through the communication opening (57).

6. The alkali vapor purification discharge device as claimed in claim 1, wherein the bottom of the water seal box (10) is further provided with a water outlet (14), and a water discharge control valve for controlling the on-off of the water outlet (14) is arranged at the water outlet (14).

7. The alkali vapor purification discharging device as set forth in claim 1, wherein the water supply port (12) is provided at the top of the water seal tank (10), and a water supply control valve for controlling the on/off of the water supply port (12) is provided at the water supply port (12).

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