CN212119549U - Waste gas filtering device for spray tower - Google Patents
Waste gas filtering device for spray tower Download PDFInfo
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- CN212119549U CN212119549U CN202020295982.2U CN202020295982U CN212119549U CN 212119549 U CN212119549 U CN 212119549U CN 202020295982 U CN202020295982 U CN 202020295982U CN 212119549 U CN212119549 U CN 212119549U
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- filtering device
- waste gas
- main body
- filtering
- filter layer
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Abstract
A waste gas filtering device is applied to pre-filtering waste gas entering a spray tower and comprises a filtering device main body, an air inlet device, a filtering device, a mud discharging device and a filtering medium; the main body of the filtering device is of a box body structure and is used for bearing various parts, and a waste gas inlet, a pre-filtered gas outlet and a sludge discharge port are arranged on the main body of the filtering device; the air inlet device comprises a fan and a special-shaped waste gas inlet pipe; the filter device comprises a honeycomb filter layer and a filter layer bracket; the mud discharging device comprises an upper pipe mud falling hole, an inclined plate and a mud accumulating cavity; the filter medium is an aqueous detergent solution. The utility model discloses a set up a filter equipment between spray column waste gas air inlet and fan, carry out prefilter to the waste gas that gets into the spray column, reduce the quantity that gets into large granule impurity and dust in the waste gas in the spray column, solve the problem that the shower nozzle regularly blockked up.
Description
Technical Field
The utility model relates to a waste gas treatment device, specificly relate to a filter equipment for spray column.
Background
The spray tower is widely used in industrial waste gas treatment, waste gas is introduced into the spray tower through an air pipe in the operation process, the waste gas and absorption liquid are subjected to gas-liquid two-phase full contact absorption neutralization reaction through a packing layer, and the waste gas is purified, dehydrated and demisted through a demisting layer and then discharged into the atmosphere; the absorption liquid is sprayed in the circulating water spray head after being pressurized by the water pump at the tower bottom, and finally flows back to the tower bottom for recycling, so that the purified waste gas meets the emission requirement of the emission standard.
Because of the dynamic circulation of water in the spray tower, dust and impurities in the water cannot be well precipitated, so that the phenomenon of blockage of a circulating water spray head is caused; the fundamental reason for the occurrence of blocking of the circulating water spray head is that a large amount of large-particle dust exists in the exhaust gas, and a pre-filtering device for the exhaust gas is needed for the spray tower to ensure the operation reliability of the spray tower.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a spray column waste gas filter equipment who avoids the frequent jam of circulating water shower nozzle to the problem that exists of the aforesaid.
A waste gas filtering device for a spray tower comprises a filtering device main body, an air inlet device, a filtering device, a mud discharging device and a filtering medium;
the main body of the filtering device is a box body structure and is used for bearing all parts;
the air inlet device comprises a fan and a special-shaped waste gas inlet pipe;
the special-shaped waste gas inlet pipe is communicated with the fan and the filtering device main body, and waste gas is introduced into the filtering device main body;
the filter device is a honeycomb filter layer; the honeycomb filter layer is in a honeycomb structure;
the filter medium is detergent aqueous solution, and the liquid level of the detergent aqueous solution in the filter device main body is higher than that of the honeycomb filter layer.
A waste gas inlet, a pre-filtered gas outlet and a sludge discharge port are arranged on the filter device main body;
waste gas enters the waste gas filtering device from the waste gas inlet and is discharged from the pre-filtering gas outlet, and filtered dust impurities are discharged from the sludge outlet;
the waste gas inlet is arranged on the side surface of the filtering device main body;
the pre-filtering gas outlet is arranged at the upper half part of the filtering device main body and is connected with the gas inlet of the spray tower;
the sludge discharge port is arranged on the side wall of the filtering device main body and is close to the bottom.
The upper part of the preferred honeycomb filter layer is in a cube shape, and the lower part of the preferred honeycomb filter layer is a cone with a downward cone top;
the special-shaped waste gas inlet pipe is provided with a horn-shaped pipe orifice which is matched with the lower half cone of the honeycomb filter layer and has a large upper part and a small lower part, and a gap of 3-5 mm is formed between the pipe orifice and the honeycomb filter layer.
The further mud discharging device comprises an upper mud falling hole, an inclined plate and a mud accumulating cavity;
the mud falling hole on the pipe is positioned on a pipeline below the horn-shaped pipeline of the special-shaped waste gas inlet pipe, and the size of the mud falling hole is not less than one fifth of the inner diameter of the special-shaped waste gas inlet pipe;
the sludge accumulation cavity is of a cuboid cavity structure, is arranged on the side wall of the filtering device main body close to the bottom and is communicated with the sludge discharge port;
the inclined plate is a rectangular plate, one end of the inclined plate is fixedly connected to the filter layer bracket, and the other end of the inclined plate is fixedly connected to the upper end of the mud accumulation cavity.
An observation window positioned on the side surface of the filtering device main body is further arranged on the filtering device main body, and the size of the observation window is the same as that of the side surface of the filtering device main body;
the observation window is characterized in that the highest water level line and the lowest water level line are carved on the observation window;
the highest water level line is coplanar with the plane of the lowest position of the air outlet of the fan;
the lowest water level line is coplanar with the upper surface of the honeycomb filter layer inside the filter body.
A filler layer and a filler layer fixing device are arranged above the preferred honeycomb filter layer;
the material of the filler layer is active carbon or cotton wool;
the packing layer fixing device comprises a material supporting plate and a material pressing plate;
the material supporting plate is of a grid structure and is fixedly connected above the honeycomb filter layer;
the pressure plate is of a grid structure and is fixedly connected above the filler layer.
The main body of the filter device is further provided with a material changing port;
the material changing port is positioned on the side wall of the filtering device main body opposite to the observation window, and the height of the material changing port is parallel and level to the filler layer.
Preferred filter media are water or alkaline solutions.
The spray tower at least comprises the following advantages:
through set up the waste gas intake pipe between fan gas outlet and waste gas filter equipment, inputed waste gas into aquatic and form the bubble to utilize among the filter equipment honeycomb's filter layer to cut apart into the small bubble with big bubble, thereby increase the area of contact of waste gas and water and filter the washing with impurity to the dust in realizing the waste gas, reduce the large granule dust content in the waste gas.
Drawings
FIG. 1 is a cross-sectional view of an exhaust gas filtering device showing the positional relationship of the various components;
FIG. 2 is an isometric transparent view of the exhaust gas filtering device, illustrating the positional relationship between the various components that the FIG. fails to illustrate completely;
FIG. 3 is a front view of the exhaust gas filtering device, showing the positional relationship between the highest water level line and the air outlet of the fan;
FIG. 4 is a rear view of the exhaust gas filtering device showing the location of the refueling port;
FIG. 5 is an isometric view of an exhaust gas filtering device showing a viewing window in position;
in the figure:
a filter device main body 100; an exhaust gas inlet 110, a pre-filtered gas outlet 120, a sludge discharge port 130, an observation window 140, a highest water level line 141, a lowest water level line 142 and a refueling port 150;
an air intake device 200; a fan 210, a special-shaped waste gas inlet pipe 220;
a filter device 300; a honeycomb filter layer 310, a filter layer bracket 320, a filler layer 330, a filler layer fixing device 340, a retainer plate 341 and a material pressing plate 342;
a sludge discharge device 400; an upper pipe mud falling port 410, a sloping plate 420 and a mud accumulating cavity 430;
a filter media 500.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below. 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 invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a cross-sectional view of an exhaust gas filtering device is shown; the exhaust gas filtering device suitable for the spray tower in the present embodiment includes a filtering device main body 100, an air intake device 200, a filtering device 300, a sludge discharge device 400, and a filter medium 500.
The filtering device main body 100 is a box structure for carrying various components, and is provided with a waste gas inlet 110, a pre-filtered gas outlet 120 and a sludge outlet 130; the waste gas inlet 110 is arranged on the side wall of the waste gas filtering device, is communicated with the gas outlet of the gas source and is used for conveying waste gas; the pre-filtering gas outlet 120 is positioned at the upper half part of the waste gas filtering device, is communicated with the gas inlet of the spray tower and is used for conveying the waste gas filtered by the waste gas filtering device; the sludge discharge port 130 is formed at a position near the bottom of the sidewall of the filter main body 100, and the filtered and precipitated sludge is discharged out of the exhaust gas filter through the sludge discharge port 130.
In practical implementation, in order to facilitate replacement of the filler in the filler layer 330 inside the filter device main body 100, the material replacement port 150 (shown in fig. 4) is provided on the side wall of the filter device main body 100 opposite to the observation window 140 at a position flush with the filler layer.
The air inlet device 200 comprises a fan 210 and a special-shaped waste gas inlet pipe 220; the blower 210 plays a role of extracting exhaust gas and transferring it to the shaped exhaust gas inlet pipe 220, which is installed outside the filter device body 100; the special exhaust gas inlet pipe 220 connects the fan 210 and the filter device body 100, and is introduced into the exhaust gas filter device through the exhaust gas inlet 110 of the filter device body 100. The special-shaped waste gas inlet pipe 220 can extend from the air outlet of the fan 210 and then extend downwards along the filtering device main body 100, the waste gas inlet 110 is bent by 90 degrees and enters the waste gas filtering device, the waste gas inlet pipe linearly extends to the center of the waste gas filtering device and bends upwards, the bent pipe extends to a position 8-10 cm away from the bottommost plane of the air outlet of the fan and then stops, and the axis of the pipeline at the section is overlapped with the axis of the filtering device main body 100 and is in a horn shape with the larger top and the smaller bottom. The special exhaust gas inlet pipe 220 is shaped to prevent the fan 210 from being damaged by the backward flow of the filter medium 500, and the pipe section having the axis coinciding with the axis of the filter device body 100 is shaped like a trumpet with a large upper part and a small lower part to increase the contact area between the exhaust gas and the filter medium 500, thereby being more beneficial to dividing large bubbles into small bubbles through the honeycomb filter layer 310.
The filter device 300 includes a honeycomb filter layer 310 and a device filter layer carrier 320 carrying the honeycomb filter layer 310. The honeycomb filter layer 310 has a honeycomb structure; the honeycomb filter layer 310 may be a cube in the shape of the upper part and a cone with the downward conical top in the lower part; the height of the square part is 5-20 mm, and the conical part can be matched with the horn-shaped part of the special-shaped waste gas inlet pipe 220 and is 3-5 mm away from the horn-shaped pipe orifice of the special-shaped waste gas inlet pipe.
The filter layer bracket 320 is a square metal block welded at four corners of the sidewall of the filter device main body 100 to support the honeycomb filter layer 310.
In consideration of the operation condition and water level of each component inside the main body 100 of the filtering apparatus, an observation window 140 (as shown in fig. 5) is arranged on the front surface of the main body 100 of the filtering apparatus, and a highest water level line 141 and a lowest water level line 142 are drawn on the observation window 140; as shown in fig. 3, the highest water level line 141 is coplanar with the lowest position of the air outlet of the blower fan 210, so as to prevent the blower fan 210 from being damaged by water flowing backward inside the filter device main body 100 after the blower fan 210 is stopped; the lowest water line 142 is coplanar with the upper surface of the honeycomb filter layer 310 inside the filter body 100, ensuring that the honeycomb filter layer 310 is completely within the filter media. In actual operation, an observer can determine whether or not the filter medium 500 needs to be added to the filter device main body 100 based on the water line of the observation window 140.
In order to better filter impurities in the exhaust gas, the utility model is provided with a filler layer 330 and a filler layer fixing device 340 above the honeycomb filter layer 310; the filler is made of activated carbon or cotton wool and the like, and the filler layer fixing device 340 comprises a material supporting plate 341 and a material pressing plate 342; the retainer plate 341 is of a grid structure, is fixedly connected above the honeycomb filter layer 310, plays a role in bearing the filler and does not influence the rising of the waste gas; the pressure plate 342 is also a grid structure and is fixedly connected above the packing layer 330 to prevent the packing from being blown away by the exhaust gas or carried out of the packing layer 330.
As shown in fig. 2, the mud discharging device 400 includes an on-pipe mud falling hole 410, a sloping plate 420 and a mud collecting cavity 430. The pipe mud falling hole 410 is positioned at the bent part of the pipeline, which is superposed with the axis of the filtering device main body 100, on the special-shaped waste gas inlet pipe 220, the size of the pipe mud falling hole is not less than one fifth of the inner diameter of the special-shaped waste gas inlet pipe 220, and the pipe mud falling hole plays a role of providing a channel for natural sinking of dust particles; the sludge accumulation cavity 430 plays a role of bearing sludge and is communicated with the sludge discharge port 130, and a cuboid of the sludge accumulation cavity is positioned on the side wall of the filtering device main body and close to the bottom; one end of the sloping plate 420 is fixedly connected to the filter layer bracket 320, the other end is fixedly connected to the upper end of the mud accumulating cavity 430, and dust particles fall onto the sloping plate 420 and are then influenced by self gravity to be accumulated in the mud accumulating cavity 430.
The filter medium 500 is an aqueous detergent solution that generates a large amount of bubbles, and can be replaced with an alkaline solution when treating exhaust gas having a large sulfur content. The liquid level is higher than the honeycomb filter layer 310.
When the waste gas filtering device is not operated, the water level in the special-shaped waste gas inlet pipe 220 is consistent with the water level in the filtering device main body 100, and when the waste gas filtering device is actually operated, the waste gas output from the air outlet of the fan 210 can push the water in the special-shaped waste gas inlet pipe 220 into the filtering device main body 100; the waste gas naturally floats in the form of bubbles after entering the filtering device main body 100, large bubbles are decomposed into small bubbles one by one after being output from the special-shaped waste gas inlet pipe 220 and passing through the honeycomb filtering layer 310, the contact area of the gas and water is increased, most dust in the waste gas is adsorbed on the bubbles, the bubbles enter into an aqueous solution after being broken, and automatically fall into the sludge accumulation cavity 430 to wait for discharge under the influence of self gravity through the upper sludge falling hole 410 and the inclined plate 420; the exhaust gas from the honeycomb filter layer 310 enters the packing layer 330 for re-filtering, and the exhaust gas passing through the packing layer 330 is discharged from the pre-filtered air outlet 120 and enters the spray tower through a pipeline for further filtering.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and those skilled in the art can make various modifications and variations. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The waste gas filtering device for the spray tower is characterized by comprising a filtering device main body, an air inlet device, a filtering device, a sludge discharging device and a filtering medium;
the main body of the filtering device is a box body structure and is used for bearing all parts;
the air inlet device comprises a fan and a special-shaped waste gas inlet pipe;
the special-shaped waste gas inlet pipe is communicated with the fan and the filtering device main body, and waste gas is introduced into the filtering device main body;
the filter device is a honeycomb filter layer, and the structure of the filter device is honeycomb;
the filter medium is detergent aqueous solution, and the liquid level of the detergent aqueous solution in the filter device main body is higher than that of the honeycomb filter layer.
2. The exhaust gas filtering device for a spray tower according to claim 1,
the filtering device main body is provided with a waste gas inlet, a pre-filtered gas outlet and a sludge discharge port;
waste gas enters the waste gas filtering device from the waste gas inlet and is discharged from the pre-filtering gas outlet, and filtered dust impurities are discharged from the sludge outlet;
the waste gas inlet is arranged on the side surface of the filtering device main body;
the pre-filtering gas outlet is arranged at the upper half part of the filtering device main body and is connected with the gas inlet of the spray tower;
the sludge discharge port is arranged on the side wall of the filtering device main body and is close to the bottom.
3. The exhaust gas filtering device for a spray tower according to claim 1,
the upper part of the honeycomb filter layer is in a cube shape, and the lower part of the honeycomb filter layer is a cone with a downward cone top;
the special-shaped waste gas inlet pipe is provided with a horn-shaped pipe orifice which is matched with the lower half cone of the honeycomb filter layer and has a large upper part and a small lower part, and a gap of 3-5 mm is formed between the pipe orifice and the honeycomb filter layer.
4. The exhaust gas filtering device for a spray tower according to claim 1 or claim 3,
the mud discharging device comprises an upper pipe mud falling hole, an inclined plate and a mud accumulating cavity;
the mud falling hole on the pipe is positioned on a pipeline below the horn-shaped pipeline of the special-shaped waste gas inlet pipe, and the size of the mud falling hole is not less than one fifth of the inner diameter of the special-shaped waste gas inlet pipe;
the sludge accumulation cavity is of a cuboid cavity structure, is arranged on the side wall of the filtering device main body close to the bottom and is communicated with the sludge discharge port;
the inclined plate is a rectangular plate, one end of the inclined plate is fixedly connected to the filter layer bracket, and the other end of the inclined plate is fixedly connected to the upper end of the mud accumulation cavity.
5. The exhaust gas filtering device for the spray tower of claim 1, wherein the filtering device body is provided with an observation window at a side of the filtering device body, and the size of the observation window is the same as that of the side of the filtering device body;
the observation window is characterized in that the highest water level line and the lowest water level line are carved on the observation window;
the highest water level line is coplanar with the plane of the lowest position of the air outlet of the fan;
the lowest water level line is coplanar with the upper surface of the honeycomb filter layer inside the filter body.
6. The exhaust gas filtering device for the spray tower according to claim 1, wherein a filler layer and a filler layer fixing device are arranged above the honeycomb filter layer;
the material of the filler layer is active carbon or cotton wool;
the packing layer fixing device comprises a material supporting plate and a material pressing plate;
the material supporting plate is of a grid structure and is fixedly connected above the honeycomb filter layer;
the pressure plate is of a grid structure and is fixedly connected above the filler layer.
7. The exhaust gas filtering device for the spray tower according to claim 1 or claim 3, wherein the filtering device body is provided with a material change port;
the material changing port is positioned on the side wall of the filtering device main body opposite to the observation window, and the height of the material changing port is parallel and level to the filler layer.
8. The exhaust gas filtering device for a spray tower of claim 1, wherein said filter medium is water or an alkali solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020295982.2U CN212119549U (en) | 2020-03-11 | 2020-03-11 | Waste gas filtering device for spray tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020295982.2U CN212119549U (en) | 2020-03-11 | 2020-03-11 | Waste gas filtering device for spray tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212119549U true CN212119549U (en) | 2020-12-11 |
Family
ID=73674551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020295982.2U Expired - Fee Related CN212119549U (en) | 2020-03-11 | 2020-03-11 | Waste gas filtering device for spray tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212119549U (en) |
-
2020
- 2020-03-11 CN CN202020295982.2U patent/CN212119549U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |