WO2010076853A1 - Procédé de dépoussiérage et de nettoyage de gaz pollué par lavage a l'eau - Google Patents

Procédé de dépoussiérage et de nettoyage de gaz pollué par lavage a l'eau Download PDF

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Publication number
WO2010076853A1
WO2010076853A1 PCT/JP2009/007370 JP2009007370W WO2010076853A1 WO 2010076853 A1 WO2010076853 A1 WO 2010076853A1 JP 2009007370 W JP2009007370 W JP 2009007370W WO 2010076853 A1 WO2010076853 A1 WO 2010076853A1
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WIPO (PCT)
Prior art keywords
water
tank
exhaust gas
gas
pollutant
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Application number
PCT/JP2009/007370
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English (en)
Japanese (ja)
Inventor
上原京正
Original Assignee
Uehara Kyomasa
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Filing date
Publication date
Application filed by Uehara Kyomasa filed Critical Uehara Kyomasa
Priority to JP2010544857A priority Critical patent/JP5514742B2/ja
Publication of WO2010076853A1 publication Critical patent/WO2010076853A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D2247/04—Regenerating the washing fluid
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents

Definitions

  • 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.
  • Patent Document 2 a device that captures particles and dust in engine exhaust gas with a bag-like filter is proposed.
  • 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.
  • 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.
  • 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.
  • Claim 1 uses one or more watering means and / or spray generating means and / or spraying means to generate watering and / or spraying and / or spraying, and the pollutant is generated by passing the exhaust gas therethrough.
  • This is a method for removing and purifying pollutant gas, characterized in that it is trapped with water.
  • one or more watering means and / or spray generating means and / or spraying means is used to generate watering and / or spraying and / or spraying, the exhaust gas is passed therethrough.
  • the disadvantages such as filter replacement and cleaning regeneration as before can be solved easily, and pollutants in various exhaust gases can be effectively captured in water, and post-treatment such as recovery and detoxification of the captured water is easy. And there is no fear of deteriorating the work environment.
  • Claim 2 is one or more layers of perforated plates and / or nets in which the exhaust gas introduced into the space above the water surface in the water tank passes through sprinkling and / or spraying or spraying and / or is wet with water
  • This is a dust removal purification method.
  • one or more watering means and / or spray generating means and / or spraying means and / or perforated plates and / or nets are arranged horizontally or in an inclined state or in a corrugated or pleated shape above the water surface of the water tank. Therefore, the water is sprayed on the water surface of the aquarium by the watering means, or the spray or spray is filled.
  • the pollutants in the exhaust gas introduced into the space above the water surface of the aquarium increase the chances of coming into contact with the water and are efficiently struck down to the water surface and captured in the tank water, so the exhaust gas is effective. Dust removal and purification.
  • the water level in the water tank is maintained at a constant level by overflowing from an overflow weir provided at a water surface position of the water tank.
  • This is a dust removal purification method.
  • the tank water that does not overflow in the water tank is returned to the sprinkling means and circulated so that it can be reused. Therefore, the tank water can be used effectively without waste, and maintenance costs can be reduced.
  • the overflowed water can be filtered or returned to the watering means via a settling tank and reused. Accordingly, the tank water in both the water tank and the precipitation tank can be circulated.
  • Claim 4 is one or more layers of perforated plates in which the pollutant gas floats and passes through in the water of the water tank and the exhaust gas passes through and / or is sprayed with water and / or spray or spray And / or a method for performing dust removal purification of pollutant gas by passing pollutant gas through a net,
  • the pollutant gas floats and passes through in the water of the water tank and the exhaust gas passes through and / or is sprayed with water and / or spray or spray And / or a method for performing dust removal purification of pollutant gas by passing pollutant gas through a net
  • one or a plurality of layers of perforated plates and / or nets are arranged in a horizontal or inclined state or in a corrugated or pleated shape, 2.
  • water is sprayed by introducing water or fresh water by means of watering disposed above the surface of the water.
  • one or a plurality of layers of perforated plates and / or nets are arranged in a horizontal or inclined state or in a corrugated or pleated shape.
  • the bubbles of exhaust gas rise and rise in the tank water and pass through the perforations and meshes of the perforated plate and mesh body, contaminants such as foreign matter and particles, oils and fats in a large number of bubble exhaust gases dispersed through Is effectively trapped in the water and purified.
  • the tank water in the said water tank and the tank water of a separate sedimentation tank are introduce
  • the fifth aspect of the present invention maintains the water level in the water tank at a constant level by overflowing from an overflow weir provided at the water surface position of the water tank.
  • This is a dust removal purification method.
  • the overflow water can also be filtered and circulated for reuse.
  • a sixth aspect of the present invention is the exhaust gas dust removing and purifying method according to any one of the second to fifth aspects, wherein the perforated plate and / or the net is vibrated. For example, it can vibrate horizontally and / or vertically and in other directions. As described above, since the perforated plate and the net body are vibrated in an arbitrary direction by a vibration device, it is possible to effectively disperse the bubbles of the pollutant gas floating in the tank water, and to further refine the exhaust gas. By contacting with purified water, the pollutant can be captured with water. In addition, if the clogged material is knocked down by vibrating the perforated plate or the net in the vertical direction, the clogging due to water or contaminants is automatically eliminated and regenerated.
  • Claim 7 forms the lower part of the said water tank in spherical shape or a funnel shape, collects sediment at the lowest part, and discharges
  • Claim 8 is one or more layers of perforated plates in which the pollutant gas floats and passes through in the water of the tank and / or the exhaust gas passes through the spray or spray and / or is wet with water, and / or A method for performing dust removal purification of pollutant gas by passing pollutant gas through a net body, Sprinkling water from and / or receiving water from at least one side of the inner wall of the duct through which the exhaust gas can pass in the horizontal direction and / or from the inclined impeller and / or receiving water spray or providing spraying means, Stand up the perforated plate and / or net vertically and / or diagonally and supply clogging water from the top to prevent clogging, Circulate the water in the lower tank so that it can be used for the above watering, And it is the dust-removal purification method of the pollutant gas characterized by maintaining the water surface of the said water tank at a fixed level by overflow.
  • water is sprayed from and / or received from the at least one side of the inner wall of the duct through which the exhaust gas can pass in the horizontal direction, at least one side of the slope and / or from the rotating impeller, and / or spraying means is provided. Therefore, the pollutant is knocked down while the exhaust gas passes through the duct and is captured in the lower water tank.
  • the perforated plate and / or mesh body is set up vertically and / or diagonally, and cleaning water is supplied from above to prevent clogging. Is adsorbed by the washing water and flows into the lower water tank, so that contaminants can be captured more reliably.
  • the purified water in the lower tank is filtered and circulated so that it can be used for the watering, the purified water can be effectively used without waste, and the maintenance cost is reduced.
  • pollutants floating on the water surface also effectively overflow, so it can be easily removed from the aquarium and treated, and can be reused if filtered and circulated. . Since such washing water is always consumed, it goes without saying that the washing water is newly replenished or circulated while being replenished from a separate settling basin.
  • the exhaust gas dust removing and purifying apparatus wherein the means for generating the splash upon receiving the sprinkling water or the jet water is one or a plurality of stages of perforated plates and / or nets. Is the method. As described above, the means for generating the splash by receiving the water spray or the squirting water is one or a plurality of perforated plates and / or nets, so that the contaminants passing through the duct are captured and enlarged. It gains weight and is easily lowered into the water tank and trapped in the tank water.
  • Claim 10 is characterized in that the bottom of the water tank at the lower part of the duct is inclined in a V shape and / or a slope shape, and the sediment in the lower part of the water tank is discharged from a horizontal slit provided at the lowest part thereof. It is a dust removal purification method of the pollutant gas of Claim 8 or Claim 9. In this way, the bottom of the water tank at the bottom of the duct is inclined in a V shape and / or a slope, and the sediment deposited at the bottom of the water tank is pushed out from the horizontal slit provided at the lowest part thereof. Only the pollutants deposited on the bottom of the water can be effectively removed outside the water tank and recovered.
  • deodorizing means such as charcoal, activated carbon, and a chemical deodorant is provided on the outflow side of the exhaust gas after being dedusted and purified by the action of water as described above, or detoxification processing means is provided.
  • deodorizing means such as charcoal, activated carbon, and chemical deodorizers are provided on the exhaust gas outflow side after being dedusted and purified by the action of water.
  • the detoxification processing means is provided and the detoxification processing is performed, it is safe and secure.
  • the one or more perforated plates and / or nets in which the pollutant gas floats and passes through the water in the tank and / or the exhaust gas passes through the spray or spray and / or is wet with water.
  • decontamination of pollutant gas is performed by passing pollutant gas, 12.
  • An oily contaminant is easily adsorbed and trapped in water by adding a detergent or a surfactant to purified water supplied to the water tank or tank water in the water tank. It is a dust removal purification method of pollutant gas given in any 1 paragraph to.
  • the oily contaminants can be easily adsorbed and trapped in the water, so that the space above the water surface is increased. Floating contaminants can be captured quickly, and even oily contaminants can be reliably captured in the tank water, removed outside the tank, and processed. As a result, more sediment is deposited on the bottom of the aquarium.
  • Claim 13 is one or more perforated plates and / or nets in which polluted gas floats and passes through the water in the water tank and / or the exhaust gas passes through the spray or spray and / or is wet with water.
  • This is a method for treating a pollutant, characterized in that a floating substance overflowing from a water tank and / or a dirt deposited on the bottom of a water tank or a sedimentation tank are collected, mixed with an adhering means such as cement and hardened. In this way, the surface contaminants overflowing from the water tank and / or the filth deposited at the bottom of the water tank or the separate sedimentation tank are collected and mixed with cement or other adhesive means to harden. It can be reused as an effective resource.
  • the contaminants floating on the water surface also overflow and are removed from the water tank and processed.
  • the tank water that does not overflow in the water tank is returned to the sprinkling means and circulated so that it can be reused. Therefore, the tank water can be used effectively without waste, and maintenance costs can be reduced.
  • the overflowed water can be filtered or returned to the watering means through a settling tank and reused.
  • one or a plurality of layers of perforated plates and / or nets are arranged in a horizontal or inclined state or in a corrugated or pleated shape. Since the exhaust gas bubbles rise and rise in the tank water, and pass through the perforations and meshes of the perforated plate and mesh body, foreign substances and particles, oils and fats in the many bubble exhaust gas dispersed through The pollutants are effectively trapped in the water and purified. Moreover, since the tank water in the said water tank and the tank water of a separate sedimentation tank are introduce
  • the fifth aspect of the present invention it is possible to maintain a constant level by always overflowing the water surface of the water tank, and to effectively remove contaminants floating on the water surface outside the water tank.
  • the overflow water can also be filtered and circulated for reuse.
  • the lower part of the water tank is formed in a spherical shape or a funnel shape and the sediment is accumulated and discharged at the lowest portion as in the seventh aspect, it is easy to collect sedimentary contaminants.
  • water is sprayed from and / or sprayed from at least one side of the inner wall of the duct through which exhaust gas can pass in the horizontal direction, at least one side of the slope and / or from the rotating impeller.
  • pollutants are knocked down and trapped in the lower aquarium while the exhaust gas passes through the duct.
  • the perforated plate and / or mesh body is set up vertically and / or diagonally, and cleaning water is supplied from above to prevent clogging. Is adsorbed by the washing water and flows into the lower water tank, so that contaminants can be captured more reliably.
  • the purified water in the lower tank is filtered and circulated so that it can be used for the watering, the purified water can be effectively used without waste, and the maintenance cost is reduced.
  • pollutants floating on the water surface also effectively overflow, so it can be easily removed from the aquarium and treated, and can be reused if filtered and circulated. . Since such washing water is always consumed, it goes without saying that the washing water is newly replenished or circulated while being replenished from a separate settling basin. Overflow water can also be filtered and circulated for reuse.
  • the means for generating water splash upon receiving the sprinkling or squirting water is one or a plurality of stages of perforated plates and / or nets, the contaminants passing through the duct are captured and enlarged. To increase the weight and easily descend into the water tank and be trapped in the tank water. Further, it can be arranged and used abundantly at a lower cost than an expensive spray nozzle that requires a pressure pump.
  • the bottom of the water tank at the bottom of the duct is inclined in a V shape and / or a slope, and the sediment deposited in the bottom of the water tank is pushed out from the horizontal slit provided at the lowest part. Only the pollutants deposited on the bottom of the water tank can be effectively removed outside the water tank and recovered.
  • deodorizing means such as charcoal, activated carbon, and a chemical deodorant is provided on the outflow side of the exhaust gas after being dedusted and purified by the action of water as in claim 11, deodorizing means is provided, so that the pollutant is removed from the exhaust gas after removal. It is possible to prevent the generation of a strange odor and inconvenience in the vicinity. Further, since the detoxification processing means is provided and the detoxification processing is performed, it is safe and secure.
  • FIG. 4 is a cross-sectional view taken along line AA in FIG. 3.
  • FIG. 4 is a cross-sectional view taken along line AA of FIG. 3 in another embodiment.
  • FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 showing a large duct.
  • 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.
  • water spraying means such as water spraying equipment is not limited to the water spray pipe.
  • 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.
  • 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.
  • 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.
  • Contaminants such as dust trapped in the tank water are deposited and deposited on the bottom of the water tank as a portion having a large specific gravity, and are discharged from the drain pipe 11 as the precipitated dirt 10.
  • 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.
  • 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.
  • 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.
  • the vibration means can be easily realized.
  • 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.
  • 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.
  • an elastic packing or spacer 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.
  • the elastic packing and the spacer for the attachment are not provided on the entire circumference of the bubble dispersion means 4, 5, 6. Up to 4 or more locations are sufficient.
  • 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 out the contaminants into the tank water W, so that light dirt that tends to float on the water surface S is removed. It is an effective method.
  • 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.
  • an overflow weir L is provided in the same manner as in FIG.
  • 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.
  • 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.
  • 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.
  • 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.
  • the perforated plate and the nets 4 to 6, 15 and 16 are vibrated in a 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.
  • the area of the perforated plate and the nets 4 to 6, 15, and 16 can be increased by forming them in a corrugated or pleated 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.
  • 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 replaced. When the dispersing 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 dispersing means 4 to 6 can be easily cleaned and regenerated. As shown in FIG.
  • 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 the maintenance inspection can be performed by looking into or entering the interior.
  • 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.
  • sewage overflowing the overflow weir L can also be used.
  • 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. .
  • the supernatant W in the settling tank 31 is supplied to the water spray pipe 2 via the filter f.
  • 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.
  • 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.
  • 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.
  • 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.
  • the overflow L is also unnecessary for the water tank 1.
  • 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.
  • FIGS. 1 and 2 the smoke and exhaust gas are removed and purified in a water-washing manner while rising and rising in the sprinkling, spraying, spraying, dispersing means 4-6, perforated plates or nets 15 and 16.
  • 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.
  • 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.
  • 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.
  • the arrows a ⁇ b> 1 are the watering direction
  • the mark “ ⁇ ” is the watering direction from the paper surface to the front
  • the mark “X” is the watering direction from the front to the paper surface.
  • 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.
  • 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.
  • 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.
  • the final mesh body 22 is slightly vibrated in a direction perpendicular to the surface to knock off moisture, thereby leaving the clogging free, and immediately after that, a gap g is provided to make the water curtain WC into a thin film shape. 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.
  • pollutants in the exhaust gas are trapped 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.
  • the sludge tank 25 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.
  • 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.
  • 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.
  • 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.
  • 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. .
  • it 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.
  • 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.
  • 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.
  • 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 substituted. However, since a high pressure is required, a pressurizing pump is required.
  • 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.
  • 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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Treating Waste Gases (AREA)
  • Treatment Of Sludge (AREA)

Abstract

L'invention concerne un procédé et un appareil de dépoussiérage et d'épuration d'un gaz de fumée ou d'un gaz pollué évacué d'un milieu détérioré, par lavage à l'eau. Ce procédé de lavage à l'eau élimine facilement des problèmes tels que le remplacement de filtre et la régénération par lavage. Afin qu'un gaz de refoulement pollué introduit par une conduite (8) dans la partie inférieure de l'eau de réservoir (W) à l'intérieur du réservoir d'eau soit dispersé en d'innombrables bulles, au moins une plaque perforée ou un filet (4, 5, 6) est placé horizontalement ou de manière ondulée ou plissée. Du fait de cette configuration, lorsque les bulles de gaz de refoulement s'élèvent dans l'eau de réservoir (W) et traversent les ouvertures des plaques perforées ou des filets (4, 5, 6), les contaminants contenus dans le gaz de refoulement sont efficacement pris dans l'eau. La poussière est ainsi évacuée et le gaz épuré. L'eau de réservoir (W) dans le réservoir d'eau est filtrée, puis introduite dans un gicleur (2) placé au-dessus de la surface de l'eau et mise en circulation. L'eau de nettoyage peut donc être réutilisée sans être gaspillée. De plus, le maintien du réservoir d'eau en débordement continu, permet de maintenir constant le niveau d'eau et les contaminants flottant à la surface de l'eau peuvent être évacués efficacement du réservoir d'eau et traités.
PCT/JP2009/007370 2008-12-30 2009-12-30 Procédé de dépoussiérage et de nettoyage de gaz pollué par lavage a l'eau WO2010076853A1 (fr)

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JP2010544857A JP5514742B2 (ja) 2008-12-30 2009-12-30 汚染ガスの水洗式除塵浄化装置

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JP2008-335850 2008-12-30

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WO2010076853A1 true WO2010076853A1 (fr) 2010-07-08

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