JP5514742B2 - Flushing dust removal and purification equipment for polluted gases - Google Patents

Description

【Technical field】
      [0001]
The present invention relates to a method and apparatus for removing dust from a flue gas discharged from a chimney of an incineration facility or a factory and a polluting gas (exhaust gas) emitted from a bad environment in a flushing manner.
[Background]
      [0002]
Various measures have been taken to prevent air pollution caused by exhaust gas discharged from engines such as automobiles and smoke emitted from chimneys of incinerators and factories. 1 and Patent Document 2, a device that captures particles and dust in engine exhaust gas with a bag-like filter is proposed. In Patent Document 3, exhaust discharged from a chimney such as a factory or an incinerator is proposed. A device for collecting dust by introducing smoke into a bag-like filter was proposed.
[Prior art documents]
[Patent Literature]
      [0003]
[Patent Document 1] JP-A-2000-227020
[Patent Document 2] JP-A-2001-140629
[Patent Document 3] Japanese Patent Application No. 2007-342006
SUMMARY OF THE INVENTION
[Problems to be solved by the invention]
      [0004]
However, as described in Patent Documents 1 to 3, an apparatus that collects dust by introducing exhaust gas into a bag-shaped filter has a large burden of cleaning and recycling the collected bag-shaped filter, and frequently uses a clogged filter. It is not economical and efficient.
In addition, in order to purify the bad environment contaminated with various dusts, etc., a technology for filtering pollutant gas containing various pollutants with various filters is known. It is easily clogged, needs to be replaced frequently, and is uneconomical.
The technical problem of the present invention is to pay attention to such a problem and to easily solve the demerits such as filter replacement and cleaning regeneration by a water washing method.
[Means for Solving the Problems]
      [0005]
The technical problem of the present invention is solved by the following means. Claim 1 includes one or more watering means and / orSplash generation meansGenerate water and / or splashesLetExhaust gas insideIs a dust removal duct device that flows horizontally.
  Then, as shown in FIG. 4, one or more perforated plates or nets are set apart from the left and right side wall surfaces of the dust removal duct, and the water splashed from the side walls collides with the nearest perforated plate or net body. The water spray that has splashed and passed without colliding with it collides with the next perforated plate or netting to generate splash. Based on the same principle, a perforated plate or a net is also provided above and below in the horizontal direction, and splashes are generated by watering in the up and down direction.
  Further, the perforated plates or nets 22 and 23 provided upright or obliquely as shown in FIG. 3 are provided so as to block the dust removal ducts, and the upper exhaust gas inflow side and exhaust gas outflow side so that the whole is always wet. Wash water on both sides before and after cleaning to keep pores and meshes from cloggingDust removal and purification of pollutant gas characterized byapparatusIt is.
      Claim 2 provides one or more watering means and / orSplash generation meansGenerate water and / or splashesLetExhaust gas insideIs a dust removal duct device that flows horizontally.
  Then, a water wheel-like rotary impeller 29 is provided as shown in FIG. 5 to radially spray water supplied to the center of the dust removal duct, and the centrifugal force at the time of rotation causes the water to radially sprinkle on the inner wall of the dust removal duct. A structure that generates splashes.
  Further, the perforated plates or nets 22 and 23 provided upright or obliquely as shown in FIG. 3 are provided so as to block the dust removal ducts, and the upper exhaust gas inflow side and exhaust gas outflow side so that the whole is always wet. Wash water on both sides before and after cleaning to keep pores and meshes from cloggingDust removal and purification of pollutant gas characterized byapparatusIt is.
      Claim 3 provides:A water tank is provided at the lower part of the dust removal duct, and the water surface in the water tank is maintained at a certain level by overflowing from an overflow weir provided at the water surface position of the water tank.The dust-removing and purifying apparatus for polluted gas according to claim 1 or claim 2, wherein
      Claim 4 provides:A structure that vibrates a perforated plate and / or a net provided so as to close a dust removal duct in the surface direction and / or in the direction perpendicular to the surface.Dust removal purification of exhaust gas according to claim 1, 2 or 3apparatusIt is.
      Claim 5 provides:Sprinkling pipes for supplying cleaning water to both the front and rear surfaces of the perforated plate or net are arranged in a direction perpendicular to the dust removal duct, and can be sprinkled in a water curtain form from one row of shower holes.The exhaust gas dust removal purification according to claim 1, 2, 3, or 4.apparatusIt is.
      [0010] Claim 6The bottom of the water tank is gradually narrowed in a V shape or a slope, and a slit is opened in the valley, and the slide plate is slid up and down to open and close the slit and adjust the opening. The structure according to any one of claims 3 to 5, which is configured to be able to be performed.Dust removal purification of exhaust gasapparatusIt is.
      Claim 7The deodorizing means is provided on the outflow side of the exhaust gas after being dedusted and purified by the action of water as described above, or a detoxification processing means is provided. InDedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 8 provides:The oily pollutant is easily adsorbed and captured by water by providing means for adding detergent or surfactant to purified water supplied to the water tank or tank water in the water tank. Any of up to claim 7Dedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 9The structure according to any one of claims 1 to 8, wherein two or more dust removing ducts are arranged in parallel.Dedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 10 provides:The tank water contaminated with the exhaust gas is purified through a filter, returned to the water supply pipe, circulated, and used again for dust removal purification of the exhaust gas.Dedusting and purifying the listed pollutant gasesapparatusIt is.
      Claim 11 provides:The water supply pipe to the sprinkling means and / or the spray generating means is piped in the direction of the dust removal duct or in the direction perpendicular to the direction of the dust removal duct.The dust removal purification of the pollutant gas according to any one of claims 1 to 10, whereinapparatusIt is.
      Claim 12 is one or more watering means and / or splashing occurrence.Using meansGenerate water and / or splashesLetExhaust gas insideWhen the flows horizontally,
  As shown in FIG. 5, a water wheel-like rotary impeller for radially spraying water supplied to the center of the dust removal duct is provided as shown in FIG. generate.
  Alternatively, as shown in FIG. 4, a perforated plate or a net is set up away from the left and right side wall surfaces of the dust removal duct, and the water splashed from the side wall is collided to generate splashes. Also, a perforated plate or a net is provided to generate splashes by a method of colliding water sprays in the vertical direction.
  Further, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct, and cleaning water is supplied to both the upper exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. And always wash to prevent clogging of pores and meshesIt is a dust removal purification method of polluting gas.
      Claim 13When dust removal purification of exhaust gas is performed by the above method,
Water flows after being used for dust removal purification of exhaust gasWater surface and / or water tank overflowing from the water tankSludge supplied with sediment from the tankCollect the sediment deposited at the bottom of the tankContactIt is characterized by mixing and solidifying with the wearing meansThe dust removal purification method of the pollutant gas according to claim 12.It is.
【Effect of the invention】
      As in claim 1One or more perforated plates or nets are set apart from the left and right wall surfaces of the dust removal duct, and the water splashed from the side walls collides with the nearest perforated plates or nets to generate splashes and pass without colliding. The sprinkled water collides with the next perforated plate or net and generates splashes, and on the same principle, the perforated plates or nets are also arranged on the top and bottom in the horizontal direction. This is as specified in paragraph “0046”.
  In addition, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct through which the exhaust gas flows in the horizontal direction, and both the upper exhaust gas inflow side and the exhaust gas outflow side are always wet. The structure in which the washing water is supplied to the tank so that the pores and meshes are not clogged at all times is as specified in the paragraph “0047”.
      As in claim 2,A turbine-type rotary impeller that radiates the water supplied to the center of the dust removal duct where the exhaust gas flows horizontally is provided, and the dust is removed by the centrifugal force at the time of rotation.TheIt is specified in paragraph “0052” that the pollutant in the exhaust gas can also be adsorbed by water by using a structure that sprays water radially on the inner wall of the tank and generates splashes at the time of collision.
  In addition, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct, and cleaning water is supplied to both the upper exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. Thus, the structure in which the pores and the mesh are always washed so as not to be clogged is as specified in the paragraph “0047”.
      As in claim 3,As shown in FIG. 4, the water level in the water tank is maintained at a certain level by providing a water tank below the dust removal duct and causing the water tank to overflow from an overflow weir provided at the water surface position of the water tank.
      As in claim 4,Due to the structure in which the perforated plate and / or the net body provided so as to close the dust removal duct is vibrated in the surface direction and / or in the direction perpendicular to the surface, clogging can be automatically prevented at all times and exhaust gas can be more effectively exhausted. The ability to trap contaminants therein is as described in paragraph “0048”.
      As in claim 5,Sprinkling pipes 24 for supplying cleaning water to both sides are arranged in a direction perpendicular to the dust removal duct and can be sprayed in the form of a water curtain from one row of shower holes, so that pores and meshes are not clogged. The constant cleaning is as described in paragraph “0047”.
      As in claim 6,The bottom of the water tank is inclined in a V shape or a slope shape and gradually narrowed, and a slit is opened in the valley portion so that the precipitate 10 is pushed out. In addition, since the slit is opened and closed by adjusting the slide plate up and down and the opening degree can be adjusted, the drain pipe for leading out the filth flowing out from the slit 26 as specified in the paragraph “0051” The discharge of filth can be controlled by operating 11 faucets.
      As in claim 7,As described above, deodorizing means is provided on the exhaust gas outflow side after being dedusted and purified by the action of water, or deodorizing means is provided, but as specified in paragraph "0053" It is effective to provide deodorizing means 28 for deodorization.
      As in claim 8,As described in paragraph “0053”, it is easy to adsorb and capture oily contaminants in water by providing means for adding detergent or surfactant to purified water supplied to the tank or tank water in the tank. In addition, contaminants can be reliably captured by water.       [0026]As specified in the paragraph “0054”, when a large amount of exhaust gas or smoke is discharged, it is impossible to process only with the single duct of FIG. 3, so that two or more dust removing ducts are arranged in parallel as in claim 9. By arranging two or more duct processing chambers R in FIG. 3 in parallel and adopting a structure as shown in FIG.
      As in claim 10,The configuration in which the tank water contaminated with the exhaust gas is purified through a filter, returned to the water supply pipe, circulated, and used again for dust removal purification of the exhaust gas is as specified in paragraph “0053”.
      As in claim 11,It is as specified in paragraph “0052” that the water supply pipes to the watering means and / or the spray generating means are piped in the direction of the dust removal duct or in the direction perpendicular to the direction of the dust removal duct.
      As in claim 12,A turbine wheel-like rotary impeller that radiates water supplied to the center of the dust removal duct where the exhaust gas flows horizontally is provided, and the centrifugal force generated during the rotation causes water to be sprayed radially on the inner wall of the dust removal duct and sprayed during a collision. It is as specified in paragraph “0052” that the pollutant in the exhaust gas is adsorbed by water.
  Or, set up a perforated plate or mesh body away from the left and right wall surfaces of the dust removal duct, and splash water by colliding with water splashed from the side wall, or arrange a perforated plate or net body in the horizontal direction. As described in the paragraph “0046”, the splashing is generated by the method of causing the vertical watering to collide.
  Further, a perforated plate or net provided vertically or obliquely is provided so as to block the dust removal duct, and cleaning water is supplied to both the upper exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. Thus, the constant cleaning so as not to clog the pores and the mesh is as shown in FIG.
      As in claim 13,When exhaust gas dust removal purification is performed by the above method, water after being used for exhaust gas dust removal purification flowsWater surface and / or water tank overflowing from the water tankSludge supplied with sediment from the tankCollect the sediment deposited at the bottom of the tankContactSince it is mixed and solidified with the landing means, the collected pollutants can be reused as concrete blocks and the resources can be used effectively.
[Brief description of the drawings]
      [0031]
FIG. 1 is an embodiment of a purification method in which exhaust gas becomes an infinite number of bubbles and floats in water.
FIG. 2 is an embodiment of a purification method for capturing filth in exhaust gas with water droplets.
Fig. 3 Purification to trap pollutants in the lower tank while exhaust gas moves horizontally in the duct
1 is an embodiment of a method.
4 is a cross-sectional view taken along the line AA in FIG. 3;
FIG. 5 is a cross-sectional view taken along the line AA of FIG. 3 in another embodiment.
6 is a cross-sectional view taken along the line AA of FIG. 3 showing a large duct.
BEST MODE FOR CARRYING OUT THE INVENTION
      [0032]
Next, an embodiment of how the water washing type dust removal purification method of smoke according to the present invention is practically described will be described. FIG. 1 shows a first embodiment of the present invention, which is a purification method in which exhaust gas becomes countless bubbles and floats and passes through water, and has a dispersing means for dispersing bubbles.
One or more sprinkling pipes 2 are provided in the space above the water surface S of the water tank 1 having a spherical shape or an upside-down shape of the water tank, and water is sprayed and supplied from the many water spray holes toward the water surface S in a shower shape. A perforated plate such as punching metal or the net 3 can be horizontally disposed between the water surface S and the water spray pipe 2. It should be noted that depending on the scale and type of the plant apparatus that discharges exhaust gas, water spraying means such as water spraying equipment is not limited to the water spray pipe.
      [0033]
The water tank 1 has an upper dispersion means 4, a lower dispersion means 5, and an intermediate dispersion means 6 made of a perforated plate or a net as dispersion means for dispersing bubbles. An exhaust gas discharger 7 is provided between the lower dispersion means 5 and the bottom of the water tank, and is connected to a chimney or other exhaust gas discharge part by a duct 8. The upper surface of the exhaust gas discharger 7 is closed with a circular plate 9 made of a porous plate, and exhaust gas is discharged from a large number of holes so that it can float and pass through the tank water W in the water tank 1. A drain hole may be formed in the bottom plate. The exhaust gas discharger 7 is preferably, for example, a dish shape or a flat shape so that the exhaust gas can be widely dispersed in the water tank, but other shapes are also possible. It should be noted that the duct 8 can be introduced as it is, or the tip can be cut obliquely in an arbitrary direction using a cylindrical body, or the dish-like discharger 7 can be substituted.
Since the water tank 1 has an overflow weir L in order to maintain the water surface S at a certain level, when water is supplied and accumulated in the water tank 1 with the water spray pipe 2, excess water on the water surface S passes over the weir L. Since the water is drained, the water level S at a certain level is always maintained.
      [0034]
Now, with the tank water W accumulated, the exhaust gas descending in the smoke exhaust duct 8 and discharged from the perforated plate 9 of the exhaust gas discharger 7 on the bottom side of the water tank 1 as a large number of bubbles, It floats and passes through the tank water W, floats on the water surface S, and is discharged into the atmosphere from the exhaust duct d and the chimney.
Since there are a plurality of dispersing means 4, 5, 6 in the tank water W, a large number of bubbles floating from the perforated plate 9 pass through the lower dispersing means 5, are dispersed into countless bubbles, and rise and rise, After the bubbles are further dispersed by the middle dispersion means 6, the bubbles rise and rise in the tank water W, and finally pass through the upper dispersion means 4, so that the bubbles rise and rise while being gradually subdivided. To surface. Accordingly, since the exhaust gas floats and passes through the tank water W in this way, the dust in the exhaust gas is trapped in the tank water W during this time, and hydrophilic pollutants are removed from the tank water. Is easily and reliably captured.
      [0035]
Contaminants such as dust trapped in the tank water settle and deposit on the bottom of the water tank at the portion where the specific gravity is large. Foam that floats on the surface of the water together with components that have a small specific gravity and floats on the surface of the water, and exhaust gas bubbles, and adhering contaminants thereof overflow the weir L and are discharged.
Therefore, the minimum amount of water is always sprayed from the water spray pipe 2 so that the suspended matter and floating bubbles on the water surface S always overflow. Further, when foreign matter or the like remains in the exhaust gas floating from the water surface S, it is knocked down into the tank water W at the time of watering. When the water spray collides with the perforated plate or the net body 3 and the water spray is generated, the water spray and the foreign matter in the floating exhaust gas are combined and flow into the water surface S. Therefore, the purification action is performed even after rising from the water surface S.
      [0036]
For example, if each of the bubble dispersing means 4, 5, 6 is finely vibrated in the horizontal direction by a vibration device, each of the exhaust gas bubbles rising and rising by itself can be further subdivided. By dispersing or subdividing the floating bubbles as described above, a larger part of the exhaust gas comes into contact with the tank water W, water spray or spray, and the contaminants are captured and adsorbed more effectively and purified. The
The vibration means can be easily realized. For example, an eccentric cam c fixed to the rotating shaft 12 is inserted into a non-round hole formed in a rib provided in the diameter direction of each of the bubble dispersion means 4, 5, 6. In this state, when the rotating shaft 12 is continuously rotated by the motor M, each of the bubble dispersing means 4, 5, 6 reciprocates slightly in the direction of the rib against the tension coil spring s on the opposite side. Water leakage can be prevented by interposing an O-ring made of an elastic material such as rubber between the rotating shaft 12 and the water tank container.
Further, by attaching and supporting a ring-shaped frame attached to the outer periphery of each of the bubble dispersing means 4, 5, 6 on the inner surface of the water tank container with an elastic packing or spacer, it is possible to easily vibrate. Needless to say, the vibration means can be used other than the configuration shown in the figure. In addition, since a large load does not act on the bubble dispersion means 4, 5, 6, the elastic packing and the spacer for the attachment are not provided on the entire circumference of the bubble dispersion means 4, 5, 6. ~ 4 or more are enough.
      [0037]
As described above, the exhaust gas is introduced into the lower part of the tank water and floats, which is a suitable method for collecting and removing sedimentary foreign matters having a large specific gravity at the bottom of the water tank. On the other hand, since FIG. 2 is a method of introducing exhaust gas to the upper side of the water surface S of the tank water W and knocking the contaminants into the tank water W, the light dirt that tends to float on the water surface S is removed. It is an effective method.
In the water tank 1 of FIG. 2, a watering pipe 2 for spraying and a spraying pipe 14 for spraying are provided in a space above the water surface S, and a perforated plate or a net 15 is provided between them. A fine mesh body 16 serving as a final filter is disposed on the upper side.
In order to maintain the water surface S of the water tank 1 at a constant level, an overflow weir L is provided in the same manner as in FIG.
      [0038]
The exhaust gas introduced into the space above the water surface S by the exhaust duct 8 flows out from many holes of the porous plate 9 of the discharger 7 in the state where water is supplied through the water spray pipe 2 and the tank water W is accumulated. The infinite number of mist-like fine water droplets ejected from the spray tube 14 are repeatedly combined and gradually enlarged. As a result, it is struck down by the shower-like washing water that has descended and mixed into the water surface S. The bottom plate of the discharger 7 may have a drain hole or a perforated plate.
In this way, the filth 10 captured and precipitated by the wash water flows out of the drain pipe 11 and is discharged from the water tank 1 and processed. Valve means for opening and closing the upper end of the drain pipe 11 in the water tank 1 can be provided, and the opening and closing control can be automatically performed by a timer or the like, or the opening and closing signal of the valve means can be manually transmitted from the outside to be opened and closed.
Alternatively, the drain pipe 11 can be provided with an opening / closing means such as a faucet so that the filth 10 does not accumulate at the bottom of the water tank. At this time, since the fluidity is better when the filth 10 and water are appropriately mixed, the faucet operation may be performed while monitoring the spilled filth from time to time so that the sewage 10 and the water are always mixed.
      [0039]
There is no opportunity to combine with spraying, and the exhaust gas that has risen gets trapped by contaminants and particles when it rises through the perforated plate and the fine holes and meshes of the mesh body 15 that are always wet by water sprayed by the water spray pipe 2 Then, it is washed off with watering by the watering pipe 2.
In addition, if the water spray collides with the perforated plate or the nets 3 and 15, it will spray and float in the form of a mist, so that it encounters remaining contaminants and particles, etc., and becomes heavier and descends gradually. In addition, it is struck down with watering and purified more reliably.
Since the net 16 disposed on the water spray pipe 2 is the finest in the net and is damp due to spraying or the like, the final removal of foreign matters and fine particles is performed. Although this net 16 is clogged, it can be easily recycled if it is washed by shower when each part in the water tank 1 is inspected and maintained. Alternatively, the water sprinkling pipe 2 may be arranged on the final stage net body 16 to always or occasionally spray water. It should be noted that optimum conditions such as increasing / decreasing or changing the shape of each of the bubble dispersing means 4, 5, 6 and the nets 3, 15, 16, and the perforated plate can be adopted.
      [0040]
Foreign matter and fine particles are struck down into the lower tank water W by the spraying and spraying of the washing water, passing through the perforated plate, or the net body to be deposited, and the accumulated filth 10 is obtained. Further, the light portion floating on the water surface S overflows the weir L, overflows together with the drainage, is removed from the water tank 1 and processed.
When the rotating shaft 12 of FIG. 1 is provided in parallel with the diametrical ribs provided on the perforated plates and the mesh bodies 4 to 6, 15, and 16 of FIGS. 1 and 2 and rotated by a motor outside the water tank, the eccentric cam c Since the perforated plate and the nets 4 to 6, 15 and 16 are vibrated in the direction perpendicular to the surface, clogged moisture, foreign matter, fine particles and the like can be knocked down, so that clogging can be prevented automatically at all times.
In addition, an area can be expanded if a perforated plate and the net | network bodies 4-6, 15, 16 are formed in a waveform or a pleat shape. The net body is not necessarily limited to a net body knitted in the vertical and horizontal directions, and may be an integrally molded net shape of synthetic resin or a non-woven fabric shape.
      [0041]
Although the aquarium 1 has an oval shape, a spherical shape, a cylindrical shape, a box shape, or the like is also possible, and the shape is not particularly limited. A stirring blade is inserted under the inner water surface S to generate a water flow of the tank water W, to circulate it in a convection manner, or to perform stirring.
It goes without saying that the dispersing means 4 to 6 and the perforated plates or the nets 15 and 16 can be washed and used repeatedly or exchanged. When the dispersion means 4 to 6 are sprinkled with the water spray pipe 2 in the state where the tank water W is removed during maintenance, the clogging of the dispersion means 4 to 6 can be easily cleaned and regenerated.
As shown in FIG. 2, if the connecting portion 13 is provided by dividing the water tank 1 into the maximum diameter portion and the optimal position in terms of structure and providing the connecting means 13, the inside can be opened for easy maintenance and cleaning. Is possible. However, a window hole that is opened and closed by a door, a cover plate, or the like may be provided in the water tank 1 so that a maintenance inspection can be performed by looking into or entering the interior.
      [0042]
In FIG. 1 and FIG. 2, the tank water W is filtered by the filter f, pressurized by the pressurizing pumps C, C1, and C2, and sprayed from the sprinkling pipe 2 or sprayed by the spray pipe 14, which is consumed due to an overflow operation or the like. Therefore, new cleaning water is replenished from the water pipes P, P1, and P2 constantly or sometimes. Not limited to the overflow operation, it evaporates or splashes into the atmosphere from the exhaust duct d or the chimney and is consumed.
Moreover, when water resources are abundant and it is not always necessary to circulate and effectively use the tank water W after washing, it is always possible to introduce clean fresh water from the water pipes P, P1, and P2 to sprinkle water. preferable.
      [0043]
When the cleaning water is effectively used, sewage overflowing the overflow weir L can also be used. In this case, as shown in FIG. 2, overflow water is accumulated in a separate sedimentation tank 31, the floating substance overflows from the overflow weir L, and the filth having a large specific gravity is settled on the tank bottom and is discharged from the drain pipe 11. . Accordingly, the supernatant W in the settling tank 31 is supplied to the water spray pipe 2 via the filter f. When the net N is arranged on the settling tank 31 and the overflow water of the water tank 1 is dropped from the net N, the suspended matter can be separated and removed by the net N.
The overflow water in the settling tank 31 can also be supplied to the water spray pipe 2 via the filter f after being filtered through the net n.
      [0044]
The water tank 1 in FIG. 2 can be replaced with a separate sedimentation tank 31 instead of storing the tank water W at the bottom. In this case, the drain pipe 11 of the water tank 1 is made thick so that the washing water can flow immediately and smoothly to the settling tank 31 side without the tank water W accumulating in the water tank 1. As a result, all the clean water in the water tank 1 is accumulated in the settling tank 31, the floating material overflows from the overflow weir L, and the filth 10 having a large specific gravity is precipitated and discharged from the drain pipe 11.
The tank water W in the settling tank 31 is supplied to the water spray pipe 2 and the spray pipe 14 via the filter f. Thus, when substituting the sedimentation tank 31, the overflow L is also unnecessary for the water tank 1.
In addition, when substituting the separate sedimentation tank 31, the water tank 1 is exclusively used for cleaning, and the tank water W does not accumulate, but is defined as being included in the “water tank” for convenience.
      [0045]
FIGS. 1 and 2 show that the smoke and exhaust gas are cleaned and cleaned in a water-washing manner while rising and rising in the sprinkling, spraying, spraying, dispersing means 4 to 6 and perforated plates or nets 15 and 16. On the other hand, FIG. 3 shows a method in which contaminants such as foreign matter, fine particles, and fats and oils are taken into the lower aquarium while exhaust gas is exhausted horizontally in the tunnel-shaped duct D. .
The dust removal duct D in FIG. 3 has a square tunnel shape as shown in FIG. 4, and smoke and exhaust gas are introduced into the left end of the figure and discharged into the atmosphere from the right end.
A water supply pipe 17 is provided outside the dust removal duct D, water is supplied to the water spray pipe in the dust removal duct D, and water is sprayed from the water spray hole H. As shown in FIG. 4, each water spray hole (nozzle) H can spray water from each direction such as downward from the ceiling, from the left and right side walls to the center, and from the bottom to the ceiling. Water can be sprayed from the diagonal to the center as shown by the arrow.
Note that the cross-sectional shape of the dust removal duct D is not limited to a quadrangle as shown in FIG. 4, and may be a circle, an ellipse, or other polygonal shapes.
      [0046]
In FIG. 3, the arrows a <b> 1 are the watering direction, the mark “◯” is the watering direction from the paper surface to the front, and the mark “X” is the watering direction from the front to the paper surface. As is clear from these watering directions, the water sprays from the respective wall portions are shifted in the exhaust gas passage direction so that they do not collide with each other. Collide with and generate splashes.
As shown in FIG. 4, when one or a plurality of perforated plates or nets 18, 19 stand up away from the wall surface, the water splashed from the side walls collides with the nearest perforated plate or nets 18, 19. The water spray that has splashed and passed without colliding collides with the next perforated plate or the nets 19 and 18 to generate the water splash.
If the perforated plates or the nets 20 and 21 are arranged in the horizontal direction on the same principle, the water spray can be generated by watering in the vertical direction.
      [0047]
A water tank is formed at the bottom of the dust removal duct D to keep the tank water W constantly, and a weir L is provided to constantly overflow the water surface. The water spray nozzle H on the bottom side is installed so as to be ejected upward from the water supply pipe 17 piped in the tank water W.
The perforated plates or nets 22 and 23 provided upright or obliquely in FIG. 3 are provided so as to block the flue of the dust removal duct D, and the washing water is supplied to the upper sprinkling pipe 24 so that the whole is always wet. Water is supplied and washed constantly so as not to clog pores and meshes. Accordingly, the water spray pipe 24 is piped in a direction perpendicular to the paper surface, and can be sprinkled in a water curtain form from a large number of rows of shower holes.
      [0048]
When the rotating shaft 12 of FIG. 1 is provided in parallel with the ribs passing through the centers of the perforated plates or nets 22 and 23 and rotated by the motor outside the dust removal duct D, the perforated plates and nets 22 and 23 are moved by the eccentric cam c. Since the clogged water and contaminants can be struck down by vibrating in the direction perpendicular to the surface, clogging can be prevented automatically automatically at all times.
In the same manner as in FIG. 1, the gas passing through the pores and meshes is refined by finely vibrating the perforated plates or the ribs passing through the centers of the mesh bodies 22 and 23 in the surface direction, and then the water spray in the processing chamber R is sprinkled. When they are encountered and splashed with water and mixed with each other, pollutants in the exhaust gas can be captured more effectively.
      [0049]
Now, in FIG. 3, when exhaust gas such as flue gas flows from the left side of the figure, the pollutants in the exhaust gas are knocked down by the water spraying from the top, bottom, left and right or oblique directions in the dust removal duct D, It is trapped in the tank water W. In addition, when there are 18, 19, 20, 21 perforated plates or nets, they encounter a splash of water generated by the sprinkling of these, and become bloated and heavy, so that they are easily knocked down into the tank water W. . Further, since the perforated plates or the nets 22 and 23 standing upright or vertically so as to block the dust removal duct D are wet, foreign substances, fine particles, and fats and oils are not generated when the exhaust gas passes through the perforations and meshes. It is adsorbed by moisture and washed away with the upper shower water, and merges into the lower tank water W.
      [0050]
In the illustrated example, the exhaust gas passes through the two-stage processing chamber R before and after the slanted net member 23, but the processing chamber can be one stage or three or more stages.
Further, as described above, the final mesh body 22 is slightly vibrated in the direction perpendicular to the surface to knock down the moisture to make it free from clogging. Immediately thereafter, the water curtain WC is formed into a thin film with a gap g. Once formed, the final water wash is performed when the beam-like airflow that has passed through the mesh passes through the water curtain WC.
A water curtain WC is formed by disposing a pipe 30 in a direction perpendicular to the paper surface directly above the water curtain WC and lowering a water flow from a slit in a direction perpendicular to the paper surface.
As described above, when the final mesh body 22 is also slightly vibrated in the surface direction, mixing of the contaminants after passing through the mesh body 22 and the water of the water curtain WC becomes more effective.
      [0051]
By repeating such an operation, pollutants in the exhaust gas are captured in the tank water W of the aquarium, and components and bubbles floating on the water surface S overflow the weir L and are discharged out of the dust removal duct D for treatment. Is done.
The components precipitated at the bottom of the water tank are collected in the sludge tank 25 as shown in FIG. As shown in the figure, when the bottom of the water tank is formed in a V shape with the left and right inclined plates, the sediment 10 accumulates in the valley, so if the slit 26 is opened in the valley bottom, the sediment 10 is slit 26. Extruded from. The opening degree can be adjusted by adjusting the slide plate 27 to open and close the slit 26. In addition, it is also possible to employ only one inclined plate without using a V shape. The slit 26 is in the same direction as the duct.
The drain pipe 11 for leading the spilled material flowing out from the slit 26 is provided as shown in FIGS. 1 and 2, and the discharge of the sewage is controlled by operating the faucet while checking the mixed state of the spilled material with water. it can.
      [0052]
Although the water supply pipe 17 in FIG. 3 is piped in the duct direction, it can be piped in a direction orthogonal to the duct direction as shown in FIG.
In addition, by rotating a water turbine-shaped rotary impeller 29 that sprinkles water supplied centrally by a water pipe or the like radially at a high speed with a motor at the center of the purification treatment chamber R in the duct, It is also possible to spray water in a radial manner and to generate a splash at the time of a collision so that the pollutant in the pollutant gas passing through the processing chamber R can be adsorbed to water.
      [0053]
The tank water W in the water tanks of FIGS. 3 and 4 is also purified through the filter f, returned to the water supply pipe 17 and circulated, and used repeatedly over and over.
By adding detergents and surfactants to the purified water supplied to the aquarium or cleaning water supplied to the water tank or by adding detergents and surfactants, it becomes possible to reliably trap the pollutants with water. .
In the above embodiment, when a large amount of water remains in the suspended matter overflowing from the weir L or the sediment recovered from the lower part of the water tank, it can be circulated after being purified by a filter or the like, and can be reused for watering or water tank.
The smoke exhaust and exhaust gas introduction portion according to the present invention is provided with a pressurizing fan F1 and pushed into the dust removal purification portion, and the suction side thereof is provided with a suction fan F2 made of a sirocco fan or the like for suction. Is effective.
It is effective to provide deodorizing means 28 such as charcoal or chemical deodorant on the discharge side for deodorization.
      [0054]
When a large amount of exhaust gas or smoke is discharged, the single duct shown in FIG. 3 cannot be used for processing. Therefore, as shown in FIG. 6, a structure in which two or more duct processing chambers R shown in FIG. By doing so, it can cope with a large amount of processing.
Each arrow is a direction of the water stream sprayed or fountained from a water spray pipe.
      [0055]
Contaminants such as water floating material overflowing from the tank weir L and sediment deposited at the bottom of the water tank are often troubled by their disposal, but in the case of the present invention, chemical agents are included if harmful substances are contained. Since it is detoxified and then mixed with cement to solidify the concrete, it can be recycled into concrete blocks and reused as building materials, landfills, retaining walls, etc.
If the collected pollutant is excessive in water, adding incineration ash or incineration residue generated from an incinerator or the like makes it easy to adjust the water content when blended with cement.
In the above embodiment, the means for causing the water spray to collide with the perforated plate or the net has been disclosed, but a commercially available spray nozzle can be used instead. However, since a high pressure is required, a pressurizing pump is required.
[Industrial applicability]
      [0056]
As described above, according to the present invention, the exhaust gas floats and passes through the tank water in the form of bubbles and / or the exhaust gas passes through the water spray and / or the exhaust gas passes through the perforated plate and / or network body wetted with water. As a result, contaminants are removed and purified, so the disadvantages of filter replacement and cleaning / regeneration can be solved easily, and pollutants in various exhaust gases can be effectively captured by water, and recovered and rendered harmless. Processing is easy and there is no risk of deteriorating the work environment.
[Explanation of symbols]
      [0057]
1 tank
W tank water
S water surface
L weir
2 watering pipes
3 perforated plate or mesh
4 Upper dispersion means
5 Lower dispersion means
6 Intermediate dispersion means
7 exhaust gas exhaust
8 Exhaust gas inflow duct
9 perforated plates
f filter
C ・ C1 ・ C2 pressurizing pump
d exhaust duct
c Eccentric cam
10 sediment waste
11 drain tube
12 rotation axes
13 connecting means
14 spray tubes
15 perforated plate or mesh
16 fine mesh
D dust removal duct
R water washing treatment room
17 water supply pipe
H sprinkling hole
18.19.20.21 perforated plate or mesh
22, 23 Vertical or oblique perforated plate or net
24 watering pipes
WC water curtain
25 sludge tank
26 slits
28 Deodorizing means
29 rotating impeller
30 piping
31 sedimentation tank

Claims (13)

Using one or more water spray means and / or spray generating means to generate a watering and / or spray, a dust removal duct system which the exhaust gas flows horizontally through the its,
One or a plurality of perforated plates or nets are set apart from the left and right side wall surfaces of the dust removal duct, and the water splashed from the side walls collides with the nearest perforated plates or nets to generate splashes and do not collide. The water sprinkled by the water collides with the next perforated plate or net and generates splashes.
With the same principle, a perforated plate or a net is also arranged in the upper and lower sides in the horizontal direction, and splashes are generated by watering in the upper and lower directions,
Perforated plates or nets installed upright or obliquely are provided so as to block the dust removal duct, and cleaning water is supplied to both the front and back of the exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. A dust removing and purifying apparatus for polluting gas, characterized in that it is configured to always wash so as not to clog pores and meshes . Using one or more water spray means and / or spray generating means to generate a watering and / or spray, a dust removal duct system which the exhaust gas flows horizontally through the its,
Provided with a water wheel-like rotary impeller that scatters the water supplied to the center of the dust removal duct in a radial manner, and a structure that sprays water radially on the inner wall of the dust removal duct by centrifugal force at the time of rotation and generates splashes at the time of collision,
Perforated plates or nets installed upright or obliquely are provided so as to block the dust removal duct, and cleaning water is supplied to both the front and back of the exhaust gas inflow side and the exhaust gas outflow side so that the whole is always wet. A dust removing and purifying apparatus for polluting gas, characterized in that it is configured to always wash so as not to clog pores and meshes . The water surface in the water tank is maintained at a constant level by providing a water tank at a lower part of the dust removal duct and causing the water tank to overflow from an overflow weir provided at a water surface position of the water tank. Dedusting and purifying device for the pollutant gas described. The structure according to claim 1, 2 or 3, wherein the perforated plate and / or the net provided to close the dust removal duct are vibrated in the surface direction and / or in the direction perpendicular to the surface . Dust removal purification device for exhaust gas. The water spray pipe for supplying cleaning water to both the front and rear surfaces of the perforated plate or the net is provided in a direction perpendicular to the dust removal duct, and is capable of water spraying in a water curtain form from one row of shower holes. The exhaust gas dust removing and purifying apparatus according to claim 1, claim 2, claim 3 or claim 4. The bottom of the water tank is gradually narrowed in a V shape or a slope, and a slit is opened in the valley, and the slide plate is slid up and down to open and close the slit and adjust the opening. The exhaust gas dust removing and purifying apparatus according to any one of claims 3 to 5, wherein the exhaust gas dust purifying apparatus is configured so as to be able to do so . The deodorizing means is provided on the outflow side of the exhaust gas after being dedusted and purified by the action of water as described above, or a detoxification processing means is provided. dust purification system of pollutant gases according to. The oily pollutant is easily adsorbed and captured by water by providing means for adding detergent or surfactant to purified water supplied to the water tank or tank water in the water tank. 8. A dust removal purification apparatus for pollutant gas according to claim 7 . The dust removal purification apparatus for polluted gas according to any one of claims 1 to 8, wherein two or more dust removal ducts are arranged in parallel . The water in the water tank contaminated with exhaust gas is purified through a filter, returned to the water supply pipe, circulated, and used for dust removal purification of the exhaust gas again. A dust removal and purification device for polluted gases. Water supply pipe to the water spray means and / or spray generating means, one of the pipes to tare Rukoto in a direction perpendicular to the direction of direction or dust duct dust duct claim 1, wherein up to claim 10 Dedusting and purifying device for pollutant gas as described in 1. Using one or more water spray means and / or spray generating means, dust is generated watering and / or spray in the duct, in the inside of that exhaust gas flows in the horizontal direction,
A turbine wheel-like rotary impeller for radially spraying the water supplied to the center of the dust removal duct is provided, and the centrifugal force at the time of rotation causes the water to be sprayed radially on the inner wall of the dust removal duct and to generate splash at the time of collision, or A perforated plate or mesh body is set up apart from the left and right side wall surfaces of the dust removal duct, and splashes are generated by colliding with water splashed from the side wall. And spraying with a method of colliding the water spray in the vertical direction,
Perforated plates or nets installed upright or obliquely are provided so as to block the dust removal duct, and the cleaning water is supplied to both the exhaust gas inflow side and the exhaust gas outflow side of the upper part so that the whole is always wet, A method for removing and purifying pollutant gas, characterized by constantly washing so as not to clog pores and meshes . When dust removal purification of exhaust gas is performed by the above method,
The precipitate deposited on the bottom of the sludge tank where water suspended matter is water after being used for the dust removal purification of exhaust gas overflowing from the water tank to flow and / or water bath or precipitates from the aqueous bath is supplied with recovered, contact adhesive The method for removing and purifying pollutant gas according to claim 12, wherein the method is mixed and hardened .

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