KR102022476B1 - Apparatus for dust and water-soluble odor removal and method thereof - Google Patents

Abstract

The present invention relates to a fine dust or water-soluble odor removing device and a method for solving the problems of smoke, fine dust, carbonization or incineration of industrial waste, and other odors and air pollution generated in various industrial sites. The scrubber unit having a circulating water tank, a high pressure blower unit for supplying harmful gas containing contaminants to the circulating water tank through a gas inlet pipe provided at a lower portion of the circulating water tank, and the circulating water into the circulating water tank. A filter press for circulating, the scrubber portion being provided in the circulating water tank and provided on the porous plate in the circulating water tank to generate fine bubbles by the harmful gas; It is provided adjacent to the bubble crushing network for crushing the bubbles generated by the discharge port of the circulating water tank And a demister configured to remove moisture from the exhaust gas from which the pollutants are removed by the circulating water, thereby maximizing the contact area with the washing water, thereby minimizing fine dust, soot and water-soluble harmful substances contained in the harmful gas. Gas can be separated more effectively.

Description

Apparatus for dust and water-soluble odor removal and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fine dust or water-soluble odor removing apparatus and method using a combination of a bubble scrubber and a filter press to remove airborne dust and water-soluble harmful gases, and in particular, various industrial sites. The present invention relates to a fine dust or water-soluble odor removing apparatus and method for solving the problem of soot, fine dust, carbonization or incineration of industrial waste, and other odors and air pollution generated in industrial sites.

In general, soot and air pollution are increasing for a variety of reasons, including economic development, population growth and improved living standards. Accordingly, major domestic industrial facilities are trying to solve the air pollution problem in various ways. However, in the case of Particulate Matter (PM) 2.5, existing air pollution prevention facilities alone show limitations in terms of technology and economics. In other words, due to the rapid development of the industry, air pollutants are diversified, and various kinds of prevention facilities are installed to treat air pollutants emitted. The rapid increase in installation and operation costs of preventive facilities leads to an increase in the price of the produced product and greatly weakens the industrial competitiveness. Therefore, various air pollutants, In other words, technologies for simultaneously treating dust, harmful gases and odors have been developed.

This air pollution prevention facility is a device that collects and removes harmful gas and solid or liquid fine particles suspended in gas, and removes fine particles of ash contained in the combustion gas of boiler, and prevents soot and other fine particles coming out of factory chimney. As a method of dust collection, a gravity method, a filtration method, an inertia and centrifugal method, a sound wave method, a cleaning method, and the like are used. In particular, a dust collector by cleaning is called a scrubber. do.

The scrubber is a facility widely used in chemical devices and air pollution prevention facilities, such as gas absorption and dust removal through gas-liquid contact in the scrubber, and there are various types of wet scrubbers depending on the structure. This type of scrubber is a packing tower that puts a filling in the main body to absorb gas with water as water flows on the filling surface, and installs a bubble cap on various stages used in distillation processes. Bubble cap tray scrubber that absorbs gas by passing gas through it, and installs a multi-stage perforated plate horizontally in the body, forms a water layer on the perforated plate, and then gas-liquid contact through the perforated plate through the hole Impingement scrubbers that absorb gas.

The most common cleaning dust collector is a nozzle spray scrubber system. When one scrubber is not enough, two scrubbers are connected in series. However, microparticles resulting from incomplete combustion of an incinerator or power plant are difficult to remove with such a universal scrubber alone.

One example of such a technique is disclosed in Documents 1 to 3 and the like below.

For example, Patent Literature 1 below discloses a gas inlet for introducing a gas contaminated by a manned fan into a scrubber, a wear portion for supplying a cleaning liquid circulated by a circulation pump to a porous plate, and forming a plurality of holes to be contaminated. As the gas passes through the water film layer through the through hole, it absorbs, collides, and diffuses through contact with numerous droplets, and a demister that removes mist generated with air passing through the porous plate. And an exhaust port for exhausting the purified air into the atmosphere, forming a constant space so that a uniform surface tension is formed in the cleaning liquid discharge portion of the wear portion in which the cleaning liquid is collected, and is integrally formed with the porous plate. , So that the cleaning liquid uniformly supplied by the induction part may generate a uniform and uniform water film layer on the upper portion of the porous plate. It is disclosed for a water film layer forming the structure of a collision type scrubber group forming the edge of the through hole to protrude into the upper parts of the water film created layer.

In addition, as shown in FIG. 1, the scrubber apparatus 1 includes a scrubber body having an injection port 3 for introducing exhaust gas and an exhaust port 4 through which exhaust gas is discharged. 2) the body 2 is cylindrical in shape, the conical or V-shaped tank part 5 forms a reservoir for the scrubbing liquid, and the bath 5 is characterized by the nature of the exhaust gas and the scrubber Disclosed is a structure comprising water as a solvent of a gas containing contaminants, depending on the application, wherein the scrubbing liquid and residues from the scrubbing operation are discharged from the scrubber 1 through the drain pipe 6. It is.

In addition, Patent Document 3 has a chamber in which an inlet and a discharge outlet are formed, the discharge unit is installed on the inlet side to ionize the noxious gas, sulfur oxides disposed in the chamber and included in the noxious gas ( A scrubber part for spraying a cleaning liquid to remove SOx) and flowing down to the lower side of the chamber, a metal porous plate installed between the discharge part and the scrubber part and having a plurality of through-holes through which the harmful gas passes, the scrubber part An electric field generating unit having a voltage applying unit for applying a voltage to the metal porous plate to collect fine particles on the side to form an electric field between the metal porous plate and the scrubber unit, and communicates with a lower end of the chamber, wherein the scrubber unit To store the fine particles removed from the sulfur oxides and the cleaning liquid removed by the scrubber portion Is described for the harmful gas treating device using the porous plate is a metal comprising the reservoir.

Republic of Korea Utility Model Registration No. 20-0425748 (registered on August 30, 2006) Republic of Korea Patent Publication No. 10-0913451 (2009.08.14 registration) Republic of Korea Patent Publication No. 10-1341479 (December 9, 2013 registration)

However, in the technique disclosed in Patent Document 1 as described above, since the induction part is formed to form a uniform surface tension in the cleaning liquid discharge part of the wear part, the fine dust contained in the noxious gas, etc. cannot be sufficiently removed, and the gas to be treated is There is a problem that the current flowing in only a part of the direction occurs to reduce the removal efficiency of the air pollution treatment equipment.

In addition, the conventional wet scrubber as described above is a water-soluble gas generated after the gas which is easily dissolved in water is treated alone by a contact reaction on the surface of a large ring, or after combustible gas is combusted. As a structure for washing and cooling dust, it has a comparatively simple configuration, and has the advantage of being easy to manufacture and large-capacity. That is, in the wet scrubber described above, such a scrubber is used to collect, that is, filter out ash, dust, and water-soluble substances that occur after burning harmful gases. At this time, the used water is sent back to the external water tank for treatment in the field or moved to the outside for treatment. However, in such a wet scrubber, new water is periodically supplied to the circulating water tank to treat water-soluble gas and dust for a predetermined time, and then the waste water is discharged through the drainage pipe to be neutralized at the wastewater treatment plant or charged to the outside. There was a problem that the processing efficiency of the gas was low and the amount of water used was excessive.

In addition, the biggest problem caused by operating the existing scrubber in the industrial site is that dust or fine dust contaminates the air pollution treatment facility after operation for about 1 to 2 months or 1 to 2 weeks, thus preventing continuous stable operation. . Among the most polluted areas, the polling (Pall Ring) used as the filling layer of the air pollution prevention facility is blocked, causing the current to flow in only a part of the gas to be treated, thereby reducing the removal efficiency of the air pollution treatment facility.

On the other hand, the nozzles are injected to prevent the contaminants in the fluid circulated during the operation of the air pollutant removal facility by the salts generated by reacting with the gaseous substance to be treated, and clogged the packed bed and sprays the circulating water. This prevents continuous operation and prevents stable removal efficiency.

An object of the present invention is to solve the problems as described above, fine dust or water-soluble odor removal device that can more efficiently remove the soot, fine dust and water-soluble gas difficult to collect in the existing air pollution treatment apparatus and its To provide a way.

Another object of the present invention is to improve the treatment efficiency of water-soluble gas and fine dust, and to provide a fine dust or water-soluble odor removal apparatus and method that can remove more economically fine dust or fine dust.

Another object of the present invention is a fine dust or water-soluble odor removing device that can reuse the cleaning water by selectively filtering only the fine dust to prevent polluted clogging by sludge dust in the water treatment space to enable continuous smooth operation and its To provide a way.

Another object of the present invention is to improve the efficiency of contact decomposition with harmful gases introduced as bubbles rise to the surface of the tank, fine dust or water-soluble odor removing device and method for improving the collection efficiency of water-soluble gas, fine dust and fine dust To provide.

In order to achieve the above object, the fine dust or water-soluble odor removing device according to the present invention is a device for removing odor and fine dust generated from soot, fine dust, carbonization or incineration of industrial waste, and other industrial sites, and filled with circulating water. A scrubber unit having a circulating water tank, a high pressure blower unit for supplying harmful gas containing contaminants to the circulating water tank through a gas inlet pipe provided at a lower portion of the circulating water tank, and circulating the circulating water into the circulating water tank. And a filter press portion to be provided, wherein the scrubber portion is provided in the circulating water tank, provided on the porous plate in the circulating water tank, and a porous plate for generating fine bubbles by the harmful gas. It is characterized in that a bubble crushing net is provided for crushing the bubbles generated by the.

In addition, in the fine dust or water-soluble odor removing device according to the present invention, preventing the circulating water pulsation (fluctuation) inside the circulating water tank by the harmful gas introduced through the gas inlet pipe and the smoothness of the circulating water to the top and bottom A circulation passage is provided between the inner wall of the circulation water tank and the porous plate for circulation.

In addition, in the fine dust or water-soluble odor removing apparatus according to the present invention, the porous plate is made of a cone shape having an inclination of 8 to 12 degrees so that bubbles generated in the circulation water tank is more uniformly generated in the porous plate, The gas outlet of the gas inlet pipe is characterized in that disposed in the central portion of the cone shape.

In addition, in the fine dust or water-soluble odor removing apparatus according to the present invention, the porous plate is mounted to have an inclination of 8 to 12 degrees in the circulation water tank, the gas outlet of the gas inlet pipe is through the circulation passage It is characterized in that it is disposed on the inclined lower portion of the trial.

In addition, in the fine dust or water-soluble odor removing apparatus according to the present invention, the pore size in the porous plate for forming a bubble of harmful gas flowing through the outlet of the gas inlet pipe is characterized in that 0.5 ~ 5mm.

In addition, in the fine dust or water-soluble odor removing apparatus according to the present invention, the blower unit is provided with a high-pressure blower to maintain a constant pressure blower of 200 ~ 1000mmAq to overcome the water pressure of the circulating water tank to discharge the harmful gas to the porous plate Characterized in that.

In addition, in the fine dust or water-soluble odor removing apparatus according to the present invention, the filter press unit is provided in the lower portion of the circulating water tank and circulating water suction pipe for sucking the circulating water including the fine dust and water-soluble odor introduced with high temperature harmful gas And a filter press for filtering and compressing the fine dust from the circulating water sucked through the circulating water suction pipe and discharging it to the outside in the form of a cake, and a circulating water provided at a position higher than the level of the circulating water tank and passing through the filter press. It characterized in that it comprises a circulating water discharge pipe discharged to the circulating water tank.

In addition, in the fine dust or water-soluble odor removing apparatus according to the present invention, provided in the vicinity of the outlet of the circulating water tank, the demister for removing water from the exhaust gas from which the pollutant is removed by the circulating water, the circulating water tank Polling provided at the top of the, characterized in that it further comprises an injection nozzle unit for spraying the washing water to the polling.

In addition, the fine dust or water-soluble odor removing method according to the present invention in order to achieve the above object as a method for removing odor and fine dust generated from soot, fine dust, carbonization or incineration of industrial waste, other industrial sites, (a A) filling the circulating water tank with washing water for cleaning the fine dust and the water-soluble odor, (b) supplying the harmful gas toward the porous plate provided in the circulating water tank so that noxious gas rises to the water layer in the form of bubbles (c) crushing the bubbles formed in the step (b) with the bubble crushing net provided on the porous plate in the circulation water tank, (d) a circulation provided between the inner wall of the circulation water tank and the porous plate Suctioning the circulated water circulated to the lower portion of the circulating water tank through a passage, (e) filtering and filtering the fine dust from the circulated water sucked in the step (d) After a large form discharged to the outside is characterized in that it comprises a step for discharging the circulation water in the circulation tank.

As described above, according to the fine dust or water-soluble odor removing device and the method according to the present invention, small bubbles are generated by forcing the contaminated noxious gas through the fine pores of the porous plate mounted inside the circulating water tank, As the generated bubbles rise to the surface, the contact area with the washing water is maximized, thereby effectively separating the fine dust, soot, and water-soluble harmful gases contained in the noxious gas.

In addition, according to the fine dust or water-soluble odor removing device and the method according to the present invention, the contaminated water of the circulating water tank is continuously introduced into the filter press and the fine dust and soot in the water in the filter plate is filtered and produced and separated into a cake, The filtered water can be used again by re-injection, and small bubbles are generated by the porous plate and the discharged polluted gas instead of a separate bubble generator, and the contaminated circulating water is continuously filtered to ensure continuous stable operation. By doing so, the effect of maximizing dust collection efficiency and minimizing the amount of water used is also obtained.

In addition, according to the fine dust or water-soluble odor removing device and the method according to the present invention, it can be used as an independent cleaning scrubber because the structure is very simple, attaching a porous plate that generates bubbles to the existing nozzle spray scrubber and pneumatic Forcibly contaminated gas can be introduced using a blower to improve the collection efficiency by two to three times or more.

In addition, since the effects of the present invention described above are naturally manifested by the configuration of the described contents irrespective of whether the inventor recognizes them, the above-described effects are only a few effects according to the contents described, and describe all the effects grasped or actual by the inventors. It should not be perceived as one.

In addition, the effects of the present invention should be further understood by the entire description of the specification, even if not described in the explicit sentences even those having ordinary knowledge in the technical field to which the contents described are having such effects through this specification. Any effect that can be acknowledged will be seen as an effect described herein.

1 is a perspective view of a conventional scrubber device,
2 is a block diagram of a fine dust or water-soluble odor removing apparatus using fine bubbles according to the first embodiment of the present invention,
3 is a perspective view of the porous plate shown in FIG.
4 is a perspective view of the bubble crushing network shown in FIG.
5 is a block diagram of a fine dust or water-soluble odor removing apparatus using fine bubbles according to a second embodiment of the present invention,
6 is a perspective view of the porous plate shown in FIG. 5, FIG.
Figure 7 is a block diagram of a fine dust or water-soluble odor removing apparatus using fine bubbles according to a third embodiment of the present invention.

The above and other objects and novel features of the present invention will become more apparent from the description of the specification and the accompanying drawings.

First, the outline of the fine dust or water-soluble odor removing apparatus and the method according to the present invention will be described.

Soot, including fine dust, generated from thermal power plants and industrial sites is a major environmental problem. Emissions from industrial sites include dust, fine dust and harmful gases.

The discharge gas of the industrial field is forced into the lower part of the bubble-type scrubber tank which is the circulating water tank of the fine dust or water-soluble odor removing device according to the present invention, and bubbles (bubbles) are generated in a large amount by the harmful gas introduced in the tank. As bubbles rise to the top of the tank, dust or contaminants contained in the inlet gas are effectively separated from the air and remain in the water, and clean air is discharged to the atmosphere. Contaminants, including dust concentrated in the contaminated water of the scrubber tank, are filtered by the filter press to make a cake shape, and the filtered water from the filter press is flowed back into the scrubber tank and reused as circulating water.

In addition, in the present invention, fine and uniform bubbles are continuously generated, and when applied to the conventional nozzle spray cleaning scrubber system, the fine dust removal rate is improved by 2 times or more. That is, when the fine dust or water-soluble odor removing apparatus and the method according to the present invention are applied to the existing nozzle spray cleaning scrubber system can greatly contribute to the improvement of air quality.

The present invention is to collect the smoke or fine dust (PM2.5) generated in the chimney of various industrial facilities more efficiently, the small bubble by passing the exhaust gas containing the smoke or fine dust through the porous plate immersed in the wash water tank As the bubbles rise to the surface of the tank, the contact decomposition efficiency with the gas introduced is improved, so that the water-soluble gas, fine dust and dust collection efficiency are improved. In addition, these suspended matter and residues are forcibly sent to the filter press together with the circulating water to make a sludge cake from the filter plate and discharged, and the filtered water is fed back into the scrubber circulating water.

On the other hand, the term "clean water" as used herein refers to water that can make effective contact with odors and fine dust generated in soot, fine dust, carbonization or incineration of industrial waste, and other industrial sites. It may include a solvent for. In addition, the term "circulating water" means washing water circulated in the fine dust or water-soluble odor removing apparatus after the washing water for cleaning the fine dust and the water-soluble odor is filled in the circulating water tank.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. This is for the purpose of describing the present invention in detail so that those skilled in the art can easily carry out the described content, and thus, the technical spirit and scope of the described content are not limited.

Example 1

2 is a configuration diagram of a fine dust or water-soluble odor removing apparatus using fine bubbles according to a first embodiment of the present invention, Figure 3 is a perspective view of the porous plate shown in Figure 2, Figure 4 is shown in Figure 2 It is a perspective view of bubble crushing net.

As shown in FIG. 2, the fine dust or water-soluble odor removing device according to the present invention is a device for removing odors and fine dust generated in soot, fine dust, carbonization or incineration of industrial waste, and other industrial sites. The scrubber unit 100 having the circulating water tank 110 filled therein, and the toxic gas containing contaminants through the gas inlet pipe 230 provided at the lower portion of the circulating water tank 110. It includes a high pressure blower 200 for supplying the filter and the filter press 300 for circulating the circulating water into the circulating water tank (110).

The scrubber part 100 is formed in a substantially cylindrical shape as shown in FIG. 2, and the circulating water tank 110 provided as a water tank provided at a lower part of the scrubber part 100 generates soot, fine dust, carbonization or incineration of industrial waste, and other industrial sites. It is filled with water, which can make effective contact with odors and fine dust. The upper portion of the circulating water tank 110 is equipped with a water supply pipe 111 for supplying the washing water, interlocked with the operation of the water supply pipe 111, and the water level gauge 112 for adjusting the water level of the upper water layer of the charged washing water. Is prepared. Therefore, the level of the washing water in the circulating water tank 110 can be kept constant at all times. In addition, a ware is installed on the top of the water layer, and the washing water overflows, and the washing water overflows to the circulating water tank 110.

In addition, as shown in Figures 2 and 3, the lower portion in the circulating water tank 110 is equipped with a porous plate 120 for generating a fine bubble by harmful gas.

The porous plate 120 according to the first embodiment of the present invention has an inclination of 8 to 12 degrees, preferably about 10 degrees, so that bubbles generated in the circulation water tank 110 are generated more uniformly and in the porous plate. It is made in a cone shape, and as shown in FIG. 3, the porous plate 120 is provided with a plurality of holes 121 in an annular shape, and a side plate 122 is provided at a circumferential portion thereof. As shown in FIG. 3 by providing the side plate as described above, to prevent the circulating water pulsation (fluctuation) inside the circulating water tank by the harmful gas introduced through the gas inlet pipe 230 and the upper and lower plates A circulation passage 150 is formed between the inner wall of the circulation water tank 110 and the porous plate 120 so as to smoothly circulate the furnace circulation water.

While the inlet gas passes through the porous plate 120 in the circulating water tank 110, bubbles are generated in the upper and lower portions of the porous plate 120. That is, the flow rate increases at the upper portion of the porous plate 120 and decreases at the lower portion of the porous plate 120 to generate a pulsation phenomenon which is a flow rate vibration. According to the instantaneous flow rate change at this time, the flow rate of the upper part is circulated to the lower part through the circulation passage 150 formed by the side plate 122 provided on the periphery of the porous plate 120.

In addition, a portion of the side plate 122 may be provided with a protrusion, and the protrusion may be fixed to the inner wall of the circulating water tank 110 by a conventional coupling method, for example, welding or screwing. In addition, the material of the porous plate 120 is not limited to a specific material, it is possible to provide a plurality of holes 121, can withstand the pressure of the harmful gas supplied from the high-pressure blower unit 200, harmful gases and As the corrosion does not occur by the washing water, high strength plastic, stainless steel, or the like can be applied.

In addition, the size of the hole 121 in the porous plate 120 to form the harmful gas introduced through the outlet of the gas inlet pipe 230 into the bubbles, the volume of the circulating water tank 110, the kind of harmful gas It can be limited by the number of holes, etc., and is preferably 0.5 to 5 mm. As the size of the minute hole of the porous plate 120 is smaller, finer bubbles are generated, thereby increasing the surface area of contact with water, thereby improving dust collection efficiency. This dust collection efficiency is twice that of conventional nozzle jet scrubbers.

On the other hand, in the fine dust or water-soluble odor removing apparatus according to the present invention, as shown in Figures 2 and 4, provided on the porous plate 120 in the circulating water tank 110 and the porous plate 120 It is provided adjacent to the bubble crushing net 130 and the outlet 150 of the circulating water tank 120 for crushing the bubbles generated by the, to remove moisture from the exhaust gas from which contaminants are removed by the circulating water Prepare a demister (140).

Toxic gas contaminated by soot and fine dust is introduced into the lower portion of the circulating water tank 110 along the gas inlet pipe 230 to forcibly pass through the porous plate 120. Bubbles generated at this time rise to buoyancy and merge with surrounding bubbles, but are destroyed by the bubble crushing network 130 and are generated in the carbonization or incineration of smoke, fine dust, industrial waste, and other industrial sites. The fine dust is separated from the washing water, and only the separated clean air is lifted from the circulating water tank 110.

The bubble crushing network 130 is made of a mesh shape, as shown in Figure 4, as the porous plate 120, as the corrosion does not occur by harmful gases and washing water is applied to high-strength plastic, stainless steel, etc. can do. In addition, the size of the mesh in the bubble crushing network 130 may be defined by the volume of the circulating water tank 110, the type of harmful gas, the number of holes, etc., and corresponds to the size of the holes 121 of the porous plate 120. It may be provided in 0.5 ~ 5mm. In addition, the bubble crushing network 130 may also be fixed to the inner wall of the circulating water tank 110 by a conventional bonding method, for example, welding or screwing.

Although the shape of the porous plate 120 and the bubble crushing network 130 has a circular shape in FIGS. 3 and 4, the shape of the porous plate 120 and the like is not limited thereto. It can be produced in the shape of a polygon.

Bubbles rising to the water surface of the circulating water tank 110 pass through the demister 140 and are discharged to the atmosphere through the discharge port 150.

As shown in FIG. 2, the high-pressure blower unit 200 is a gas suction pipe 210 for sucking harmful gases including smoke, fine dust, carbonization or incineration of industrial waste, and odors and fine dust generated in other industrial sites. ), A high pressure blower 220 for compressing and discharging the harmful gas sucked from the gas suction pipe 210 to a high pressure and a gas inlet pipe for guiding the harmful gas blown from the high pressure blower 220 to the circulating water tank 110. 230.

The high pressure blower 220 is provided to maintain a constant pressure of the blower of 200 ~ 1000mmAq to overcome the water pressure of the circulating water tank 110 to discharge the harmful gas introduced into the porous plate 120.

As shown in FIG. 2, the gas inlet pipe 230 according to the first exemplary embodiment of the present invention is provided to have an outlet portion that is extended at an approximately central portion of the porous plate 120 having a cone shape. Therefore, the gas inlet pipe 230 may expand and discharge the supply amount of harmful gas toward the porous plate 120.

On the other hand, the filter press 300 according to the first embodiment of the present invention is provided in the lower portion of the circulating water tank 110, as shown in FIG. A circulating water suction tube 310 for sucking circulating water including a water-soluble odor, a filter press 320 for filtering and discharging fine dust from the circulating water sucked through the circulating water suction tube 310 and discharging it to the outside in the form of a cake; It is provided at a position higher than the water level of the circulating water tank 110, and includes a circulating water discharge pipe 330 for discharging the circulating water via the filter press 320 to the circulating water tank (110).

The filter press 320 forcibly flows the washing water in the lower portion of the circulating water tank 110 and passes through the filter plate to be discharged in the form of a sludge cake, and the filtered washing water is reused as the circulating water. That is, since the dust concentration in the circulating water increases as the operating time increases in the fine dust or water-soluble odor removing device, the cleaning water in the circulating water tank 110 is periodically sent to the filter press 300 to compress and dewater by using a filter cloth. , The filtrate is sent to the circulating water tank 110 and the fine dust is discharged to the outside in the form of a cake. The circulating water purified by the filter press unit 300 is circulated to the water layer of the circulating water tank 110. The water-soluble odor component is dissolved in water and neutralized by injecting a neutralizer or additive into the circulating water tank 110. In the case of acidic gas, a salt is formed when it meets the neutralizing agent, and the salt is discharged to the outside in the form of a cake from the filter press 320.

As described above, in the fine dust or water-soluble odor removing apparatus according to the first embodiment of the present invention, in the structure of the conventional scrubber scrubber, the lower portion is the circulating water as the circulating water tank 110, the circulating water is stored, The porous plate 120 is installed inside the circulating water tank 110, and the harmful gas including the contaminants is forced into the lower portion of the porous plate 120 by the high pressure blower 220. The harmful gas is introduced, and the introduced harmful gas passes through the small holes 121 of the porous plate 120 to generate minute bubbles, and these bubbles rise above the water surface of the circulating water tank 110 to prevent aggregation. Passing through the bubble crushing network 130, the dust, soot or water-soluble harmful gas was separated with the washing water, the separated clean air passes through the demister 140 to the atmosphere through the outlet 150 of the upper Is discharged to .

In addition, the washing water contaminated in the circulating water tank 110 is continuously introduced into the filter press 320 to separate cake solids, and at the same time, the washing water filtered and discharged from the filter press 320 is the circulating water tank 110. ) Can be reused as circulating water to maximize dust collection efficiency and minimize the amount of cleaning water used.

Second Embodiment

Next, a second embodiment of the fine dust or water-soluble odor removing apparatus according to the present invention will be described with reference to FIGS. Also, in the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and repeated description thereof will be omitted.

5 is a configuration diagram of a fine dust or water-soluble odor removing apparatus using fine bubbles according to a second embodiment of the present invention, Figure 6 is a perspective view of the porous plate shown in FIG.

In the second embodiment of the present invention, the structure of the perforated plate and the structure of the gas inlet pipe are changed to minimize the underwater corrosion of the gas inlet pipe 230 while simplifying the inside of the circulating water tank 110.

That is, in the second embodiment, as shown in FIGS. 5 and 6, the porous plate 120 ′ has an inclination of 8 to 12 degrees, preferably 10 degrees, in the circulating water tank 110 so that the generation of bubbles is uniform. It is mounted to have an inclination, and the gas outlet of the gas inlet pipe 230 is disposed at an inclined lower portion of the porous plate 120 ′ via the circulation passage 150.

Therefore, in the second embodiment, the structure can be simplified as compared with the first embodiment, and the circulation of the washing water in the filter press 300 can be smoothly performed.

Third Embodiment

Next, a third embodiment of the fine dust or water-soluble odor removing apparatus according to the present invention will be described with reference to FIG. In the third embodiment, the same parts as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and repeated description thereof will be omitted.

7 is a block diagram of a fine dust or water-soluble odor removing apparatus using fine bubbles according to a third embodiment of the present invention.

In the third embodiment of the present invention, the second embodiment is applied in addition to the existing nozzle injection scrubber system.

That is, the fine dust or water-soluble odor removing apparatus according to the third embodiment of the present invention, as shown in Figure 7, the blower 400, a polling (pall ring, 600) provided on the upper portion of the circulation water tank 110, The porous plate 120 'and the bubble crushing network 130 in the existing scrubber system having the spray nozzle unit 500 and the demister 140 having the spray nozzle 510 spraying the washing water to the polling 600. ), A high pressure blower unit 200 for supplying noxious gas to the circulating water tank 110 and a filter press 300 for circulating the circulating water into the circulating water tank 110.

Therefore, in the third embodiment according to the present invention, the harmful gas flows into the water surface of the circulating water tank 110 and passes through the polling 600 to be washed by the washing water of the spray nozzle 510 and then the demister 140 is removed. Passes through and is released to the atmosphere

In the system as shown in FIG. 7, when the conventional blower 400 is turned off and the high-pressure blower 220 is selectively operated, the dust collecting efficiency of the fine dust and the soot can be more than doubled.

Next, a fine dust or water-soluble odor removing method according to the present invention will be described with reference to FIG.

The method for removing fine dust or water-soluble odor according to the present invention is a method for removing odor and fine dust generated in soot, fine dust, carbonization or incineration of industrial waste, and other industrial sites, as shown in FIG. Washing water for cleaning the dust and water-soluble odor is filled in the circulating water tank (110).

On the other hand, in the circulating water tank 110, for example, as shown in Figure 2, the porous plate 120 is mounted on the upper portion of the outlet of the gas inlet pipe 230, the bubble crushing net on the upper portion of the porous plate 120 130 is mounted.

When the high pressure blower 220 is operated, the harmful gas sucked into the gas suction pipe 210 is compressed to a high pressure and supplied to the lower portion of the porous plate 120 through the outlet of the gas inlet pipe 230, and the harmful gas is bubbled. To the water level.

Hazardous gases are contained in the bubbles through the porous plate 120 provided in the circulating water tank 120, and as the bubbles rise, the bubbles are crushed by the bubble crushing network 130 provided on the porous plate 120. Washing water and fine dust are separated. In addition, the washing water is circulated to the lower portion of the circulation water tank 110 through the circulation passage 150 provided between the inner wall of the circulation water tank 110 and the porous plate 120.

In the exhaust gas from which the contaminants are removed by the circulating water, moisture is reduced by the demister 140 and only the gas itself is discharged to the outlet 150.

Meanwhile, when the filter press 320 is operated, the washing water circulated to the lower portion of the circulating water tank 110 is sucked into the circulating water suction pipe 310, and the filter press 320 filters the fine dust from the circulated water. Compressed and discharged to the outside in the form of a cake, the circulating water via the filter press 320 is discharged to the circulating water tank 110 through the circulating water discharge pipe 330, the above-described process is repeated for a predetermined time .

As mentioned above, although the invention made by the present inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

By maximizing the contact area with the washing water by using the fine dust or water-soluble odor removing device and the method according to the present invention it is possible to more effectively separate the fine dust, soot and water-soluble harmful gas contained in the harmful gas.

100: scrubber part
110: circulating water tank
120: perforated plate
130: bubble crushing net
220: high pressure blower
320: filter press

Claims (9)

delete As a device to remove odor and fine dust generated from soot, fine dust, carbonization or incineration of industrial waste or other industrial sites,
A scrubber unit having a circulating water tank filled with circulating water,
A high pressure blower unit for supplying harmful gas including contaminants to the circulating water tank through a gas inlet pipe provided at a lower portion of the circulating water tank;
It includes a filter press for circulating the circulating water into the circulating water tank,
The scrubber portion
A porous plate provided in the circulation water tank and generating fine bubbles by the harmful gas;
A bubble crushing net is provided on the porous plate in the circulation water tank and breaks bubbles generated by the porous plate.
Between the inner wall of the circulating water tank and the porous plate for preventing circulating water pulsation (fluctuation) inside the circulating water tank by the harmful gas introduced through the gas inlet pipe and for smooth circulation of the circulating water to the upper and lower portions of the porous plate. Fine dust or water-soluble odor removing device, characterized in that the circulation passage is provided in. In claim 2,
The porous plate has a cone shape having an inclination of 8 to 12 degrees so that bubbles generated in the circulation water tank are more uniformly generated in the porous plate,
The gas outlet of the gas inlet pipe is fine dust or water-soluble odor removing device, characterized in that disposed in the central portion of the cone shape. In claim 2,
The porous plate is mounted to have an inclination of 8 to 12 degrees in the circulating water tank,
The gas outlet of the gas inlet pipe is disposed in the inclined lower portion of the porous plate through the circulation passage, fine dust or water-soluble odor removing device. The method of claim 3 or 4,
The fine dust or water-soluble odor removing device, characterized in that the hole size is 0.5 ~ 5mm in the porous plate for forming the harmful gas flowing through the outlet of the gas inlet pipe. In claim 5,
The blower unit is a fine dust or water-soluble odor removing device characterized in that it comprises a high-pressure blower to maintain a constant pressure of 200 ~ 1000mmAq blower to overcome the water pressure of the circulating water tank to discharge the harmful gas introduced into the porous plate. In claim 6,
The filter press unit
A circulating water suction pipe provided at a lower portion of the circulating water tank and suctioning circulating water including fine dust and water-soluble odor introduced with high temperature harmful gas,
Filter press for filtration and compressing the fine dust in the circulating water sucked through the circulating water suction pipe to discharge to the outside in the form of cake,
And a circulating water discharge pipe provided at a position higher than the water level of the circulating water tank and discharging the circulating water via the filter press to the circulating water tank. In claim 7,
A demister provided adjacent to an outlet of the circulating water tank and removing moisture from the exhaust gas from which contaminants have been removed by the circulating water;
Polling provided in the upper portion of the circulating water tank,
Fine dust or water-soluble odor removing apparatus further comprises a spray nozzle unit for spraying the washing water to the polling. As a method of removing odor and fine dust generated from soot, fine dust, carbonization or incineration of industrial waste or other industrial sites,
(a) filling the circulating water tank with washing water for cleaning the fine dust and the water-soluble odor,
(b) supplying noxious gas toward the porous plate provided in the circulating water tank so that noxious gas rises to the water layer in the form of bubbles;
(c) crushing the bubbles formed in the step (b) with a bubble crushing net provided on the porous plate in the circulating water tank,
(d) sucking the circulated water circulated to the lower portion of the circulating water tank through a circulating passage provided between the inner wall of the circulating water tank and the porous plate;
(e) filtering the fine dust from the circulated water sucked in step (d) and discharging it to the outside in the form of a cake, and then discharging the circulating water to the circulating water tank. How to get rid of bad smell.

Images