KR100821611B1 - Wet dust collector processing dust particles and gas synchronously and processing method thereof - Google Patents

Abstract

A wet dust collector for removing dust and gas simultaneously is provided to reduce the consumption of power and the installation area in a process of removing odor and harmful gases containing a large amount of dust, and maintain the initial efficiency although the wet dust collector is operated for a long time, and a method for removing dust and gas simultaneously using the wet dust collector is provided. A wet dust collector for removing dust and gas simultaneously comprises: a first dust collecting part(304) for receiving harmful gas containing dust flown in by suction force of an induced draft fan(316) to mix dust with cleaning water by the venturi action; a second dust collecting part(306) for mixing cleaning water with dust and cleaning water that have not been dropped to a dust slurry water tank(312) in a lower part in the dust and cleaning water mixed in the first dust collecting part, and harmful gas containing the dust dropped into the dust slurry water tank of the lower part to spray the mixture; a first gas-liquid separating eliminator(307) for separating the cleaning water sprayed from the second dust collecting part; a packing layer(310) for changing harmful gas passing through the first and second dust collecting parts into clean air; front and upper sprays(308,309) for uniformly spraying the cleaning water onto a front face and a top face of the packing layer; and a second gas-liquid separating eliminator(311) for passing through the clean air from which the harmful gas is absorbed. Further, partition walls and discharging holes are installed at the dust slurry water tank.

Description

Wet dust collector processing dust particles and gas synchronously and processing method

1 is a pre-processed dust collector and a wet dust collector for processing a gas containing conventional dust.

2 is a horizontal wet dust collector for processing a conventional gas.

3 is a configuration diagram of a wet dust collector for simultaneously treating dust and gas of the present invention.

FIG. 4 is a view illustrating first and second dust collecting parts of the wet dust collector of FIG. 3.

FIG. 5 is a view illustrating a gas absorber of the wet dust collector of FIG. 3.

FIG. 6 is a view illustrating an outlet of the wet dust collector of FIG. 3.

7 is a flowchart illustrating a method of treating a wet dust collector for simultaneously treating dust and gas of the present invention.

              <Explanation of symbols for the main parts of the drawings>

301: inlet duct 302: wet dust collector

303: first spray 304: first dust collecting part

305: 2nd spray 306: 2nd dust collection part

306a: front plate 306b: back plate

307: first gas-liquid separation eliminator

308: front spray 309: upper spray

310: filling layer 311: second gas-liquid separation eliminator

312 dust slurry tank 313 washing water circulation tank

314: lower partition of the slurry tank 315: cleaning pump

316: manned blower 317: silencer

318 stack 319 lower plate of the stack

320: drain

The present invention relates to a wet dust collector and a method for treating the dust and gas at the same time, particularly in the process of processing harmful gases and odors containing a large amount of dust, the use of power is small, the installation area is small, The present invention relates to a wet dust collector and a method of treating the same, which can maintain initial efficiency.

In general, several types of wet dust collectors are used to treat harmful gases emitted during manufacturing operations in manufacturing plants. In particular, in the case of installing a dry dust collector at the front of the wet dust collector in the process of treating harmful gases and odors containing a large amount of dust, the pressure loss is excessive, so that the power consumption is large, the installation space is large, and the initial equipment cost is high. There are disadvantages. In addition, even when only the wet dust collector is installed alone, there is a problem that it is difficult to maintain initial efficiency due to clogging of the filling layer and the demister due to dust. This will be described with reference to FIGS. 1 and 2.

1 is a pre-processed dust collector and a wet dust collector for processing a gas containing conventional dust. As shown in FIG. 1, harmful gases including dust generated in the manufacturing process by the suction force of the attracting blower 105 in the vertical type wet scrubber of the general type are supplied to the dry dust collector (through the inlet duct 101). 102 is introduced, where about 60% of the dust is collected and discharged through the dust discharge device (103). Then, the harmful gas including the remaining dust is introduced into the wet dust collector 106. At this time, the washing water circulating through the washing pump 107 is injected into the front spray 109 and the upper spray 111 and flows down to the primary filling layer 108 and the secondary filling layer 110. Dust and harmful gases are collected in the primary and secondary filling layers 108 and 110, and the water droplets are filtered out of the gas-liquid separation demister 112 and then clean air is discharged to the stack 113.

The equipment is initially excellent in efficiency, but clogging of the filling layer and the demister occurs due to prolonged operation, resulting in a loss of the original efficiency. This necessitates the cleaning of the equipment and the replacement of the functional products, resulting in large economic losses. In addition, since the initial capital investment cost and power loss is large, there is a problem that a lot of operating costs and installation space is required.

2 is a horizontal wet dust collector for processing a conventional gas. As shown in FIG. 2, in a horizontal type wet dust collector mainly used in an electronic component manufacturing plant, harmful gas is introduced into the wet dust collector 202 through the inlet duct 201 by the suction force of the induced blower 209. The washing water is circulated using the washing pump 203.

The wash water is sprayed into the front spray 204 and the top spray 205 and flows into the fill layer 206. After the harmful gas is absorbed and filtered by the gas-liquid separation eliminator 207, clean air is discharged to the stack 113.

In the horizontal wet scrubber, the simple gas absorption efficiency is excellent, but when the gas containing dust is introduced, the packed layer is clogged to maintain the original efficiency, and the circulation water tank 208 is integrally formed to collect dust in the washing water. The phenomenon which accumulates in this filling layer 206 arises. In addition, in order to have the original function, the tower speed inside the wet dust collector should be able to be kept constant, but the functional part that can maintain the tower speed inside is weak, so that the performance of the facility cannot be excellently exhibited. have.

Accordingly, the present invention is to solve the above problems, to provide a wet dust collector and a method of treating the harmful gas containing a large amount of dust at the same time, excellent efficiency, easy management, low operating cost It aims to do it.

The present invention provides a wet dust collector, comprising: a first dust collecting unit receiving harmful gas including dust introduced by suction force of a attracting blower, and mixing dust and washing water by venturi action; In the dust and washing water mixed in the first dust collection unit, dust and washing water not dropped into the lower dust slurry tank, and harmful gas including dust falling into the lower dust slurry tank are mixed with washing water. A second dust collecting unit to spray; A first gas-liquid separation eliminator for separating the washing water sprayed from the second dust collection unit; A filling layer for converting harmful gas passing through the first and second dust collecting dust collectors into clean air; Front and upper sprays to allow the washing water to be evenly sprayed on the front and upper surfaces of the filling layer, respectively; And a second gas-liquid separation eliminator through which clean air absorbed by the noxious gas is provided.

The present invention also provides a method for treating a wet dust collector including a first dust collecting unit, a second dust collecting unit, a first gas-liquid separation eliminator, a filling layer, a front surface and an upper spray, and a second gas-liquid separation eliminator. A first step of receiving the harmful gas including dust introduced by the suction force of the attracting blower from the first dust collecting unit and mixing the dust and the washing water by a venturi action; Mixing dust and washing water which did not fall into the lower dust slurry tank among the mixed dust and washing water in the second dust collecting unit, and harmful gas including dust falling into the lower dust slurry tank, was mixed with washing water. Second step of spraying water; A third step of separating the sprinkled wash water from the first gas-liquid separation eliminator; A fourth step of converting the harmful gas into clean air in the filling layer; A fifth step of spraying the washing water on the front surface and the upper surface of the filling layer in the front and upper sprays, respectively; And a sixth step of passing the clean air absorbed by the noxious gas in the second gas-liquid separation eliminator.

3 is a configuration diagram of a wet dust collector for simultaneously treating dust and gas of the present invention, Figure 4 is a view showing the first and second dust collector of the wet dust collector of Figure 3, Figure 5 is a wet dust collector of Figure 3 6 is a view illustrating a gas absorber, and FIG. 6 is a view illustrating an outlet of the wet dust collector of FIG. 3. The wet dust collector which processes dust and gas at the same time includes the first dust collection unit 304, the second dust collection unit 306, the first gas-liquid separation eliminator 307, the filling layer 310, the front and upper sprays. 308, 309, and a second gas-liquid separation eliminator 311.

The harmful gas including a large amount of dust introduced by the suction force of the attracting blower 316 flows into the inlet duct 301 and flows into the main body of the wet dust collector 302. And the washing water sprayed from the second sprays 303 and 305 is sent to the first and second dust collecting portions 304 and 306.

The first dust collection unit 304 receives harmful gas including dust introduced by the suction force of the attracting blower, and mixes most of the dust with the washing water by venturi action, thereby lowering the dust slurry tank 312. Drop). At this time, since the pressure of the air is low in the portion where the speed of the washing water is high, by the venturi action of mixing the washing water and the air and spraying them at high speed, the dust is mixed with the washing water and falls at a high speed.

The second dust collecting unit 306 mixes the dust and washing water that has not fallen into the lower dust slurry tank 312 and the harmful gas including the dust that has dropped into the dust slurry tank of the lower portion with the washing water again. To separate, the second dust collecting portion consists of a front plate 306a and a back plate 306b. The front plate 306a collects dust by venturi action and divides the flow of noxious gas, and makes the flow velocity in a tower constant throughout. The back plate 306b separates the dust mixed with the washing water by collision and inertia and collects the dust. The first and second dust collectors 304 and 306 not only separate 90% or more of the introduced dust and sprayed washing water, but also reduce the odor to 250 times or less even when washing with water.

The first gas-liquid separation eliminator 307 separates the flushed water from the first and second dust collection units 304 and 306. Here, the washing water injected from the first and second sprays 303 and 305 by the operation of the cleaning pump 315 is sprayed by the first and second dust collecting portions 304 and 306.

After the dust is collected, the harmful gas is pretreated by at least 40% due to the first and second dust collecting units 304 and 306. Since the first gas-liquid separation eliminator 307 has a chevron type representing a V-shaped repetitive pattern, the first gas-liquid separation eliminator 307 has a long life and no clogging occurs.

In the filling layer 310, the harmful gas passing through the first and second dust collecting units 304 and 306 passes and becomes clean air. The filling layer 310 is installed by inclining a predetermined angle in consideration of the movement of the washing water according to the flow of the gas, the operation differential pressure is 80 ~ 100mmAq built-in pre-treatment.

The front spray 308 and the top spray 309 are each so that the washing water is evenly sprayed on the front and top surfaces of the filling layer 310, respectively. When the chevron is replaced at the top of the front spray 308, the chevron can be easily replaced using the chain block.

The second gas-liquid separation eliminator 311 passes clean air absorbed with harmful gas, and the clean air absorbed with harmful gas is discharged through the stack 318 via a manned blower 316. The second gas-liquid separation eliminator 311 has a low height to facilitate maintenance.

The attracting blower 316 is installed at the rear end of the dust collector 302, and there is no risk that dust is fixed. A silencer 317 is installed on the inner circumferential surface of the stack 318 installed in a self-supporting manner on the discharge side of the attracting blower 316. Reduces discharge noise during operation. The silencer installed inside the silencer 317 is installed at an angle to the end face of the silencer 317 as shown in FIG. 6 to absorb noise.

In addition, a lower plate 319 is installed inside the stack 318, and fine droplets are collected and recovered to the washing water circulation tank 313 through the drain 320 so that no droplets of water splash. Here, in addition to the washing water circulation tank 313, the dust slurry tank 312 is configured. Due to the lower partition 314 of the dust slurry tank 312, the separated high concentration of dust slurry is separately managed to maintain and repair. It is easy.

In addition, the dust slurry tank 312 may be provided with a drain hole (not shown) to smoothly drain the dust slurry, and the washing water must be introduced from the side wall of the washing water circulation tank 313 to fill the filling layer 310. Can be prevented. The dust slurry tank 312 is a place where the wastewater containing the dust slurry is collected, and the washing water circulation tank 313 is a place where the supernatant is collected after the dust slurry is precipitated in the dust slurry tank 312. That is, in the present invention, the washing water for cleaning the contaminated air is continuously circulated and the dust slurry precipitates in the dust slurry tank 312 and is then washed with the supernatant water moved to the washing water circulation tank 313 to contaminate the filling layer. Can be reduced.

7 is a flowchart illustrating a method of treating a wet dust collector for simultaneously treating dust and gas of the present invention. Referring to FIG. 7 together with FIGS. 3 to 6, a method of treating a wet dust collector for simultaneously treating dust and gas is as follows. A more detailed description thereof will be omitted since it has been described with reference to FIGS. 3 to 6.

First, the dust and the washing water are mixed by the venturi action in the first dust collecting unit 304 (S100).

Thereafter, the second dust collecting unit 306 mixes the dust and washing water that do not fall into the lower dust slurry tank from the mixed dust and washing water, and the harmful gas including the first filtered dust, with the washing water. Watering (S200).

Thereafter, the sprinkled wash water is separated from the first gas-liquid separation eliminator 307 (S300).

Subsequently, the harmful gas is changed into clean air in the filling layer 310 (S400).

Thereafter, the front and upper spray (308, 309) to allow the washing water is evenly sprayed on the front and the upper surface of the filling layer (310) (S500).

Thereafter, the second gas-liquid separation eliminator 311 passes clean air absorbed by the noxious gas (S600).

It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the technical spirit of the present invention through the above description. Therefore, the technical scope of the present invention should not be limited only to the contents described in the embodiments, but should be defined by the claims.

As described above, the wet dust collector and the treatment method for simultaneously treating dust and gas according to the present invention have the effect of increasing the dust collection efficiency and reducing the installation cost while reducing the installation cost. In addition, there is an effect of maintaining the initial efficiency even when driving for a long time.

Claims (9)

In the wet dust collector, A first dust collecting unit receiving harmful gas including dust introduced by a suction force of the attracting blower and mixing the dust and the washing water by a venturi action; In the dust and washing water mixed in the first dust collection unit, dust and washing water not dropped into the lower dust slurry tank, and harmful gas including dust falling into the lower dust slurry tank are mixed with washing water. A second dust collecting unit to spray; A first gas-liquid separation eliminator for separating the washing water sprayed from the second dust collection unit; A filling layer for converting harmful gas passing through the first and second dust collecting dust collectors into clean air; Front and upper sprays to allow the washing water to be evenly sprayed on the front and upper surfaces of the filling layer, respectively; And A second gas-liquid separation eliminator passing the clean air absorbed by the noxious gas; Wet dust collector for simultaneously processing dust and gas comprising a. The method of claim 1, The second dust collecting unit, A front plate for collecting the dust by a venturi action and dividing the flow of the noxious gas; And A rear plate which separates the mixed washing water and dust by collision and inertia, and collects the dust; Wet dust collector for simultaneously processing dust and gas comprising a. The method of claim 1, Wet dust collector for simultaneously processing the dust and gas, characterized in that the partition slurry tank is installed. The method of claim 1, The dust slurry tank is a wet dust collector for simultaneously treating dust and gas, characterized in that the drain hole is installed. The method of claim 1, The filling layer is a wet dust collector for processing dust and gas at the same time, characterized in that installed at an inclined angle. The method of claim 1, And a stack for discharging the clean air passing through the second gas-liquid separation eliminator. The method of claim 6, A wet dust collector for simultaneously processing dust and gas, characterized in that a silencer is installed on the inner circumferential surface of the stack. The method of claim 7, wherein The muffler is a wet dust collector for processing dust and gas at the same time, characterized in that installed inclined at a predetermined angle to block the noise noise. In the method of treating a wet dust collector comprising a first dust collector, a second dust collector, a first gas-liquid separation eliminator, a packing layer, a front and top spray, and a second gas-liquid separation eliminator, A first step of mixing the dust and the washing water by a venturi action by receiving a harmful gas including dust introduced by the suction force of the attracting blower from the first dust collecting unit; Mixing dust and washing water which did not fall into the lower dust slurry tank among the mixed dust and washing water in the second dust collecting unit, and harmful gas including dust falling into the lower dust slurry tank, was mixed with washing water. A second step of watering; A third step of separating the sprinkled wash water from the first gas-liquid separation eliminator; A fourth step of converting the harmful gas into clean air in the filling layer; A fifth step of spraying the washing water on the front surface and the upper surface of the filling layer in the front and upper sprays, respectively; And A sixth step of passing the clean air absorbed by the noxious gas in the second gas-liquid separation eliminator; Treatment method of a wet dust collector for simultaneously treating dust and gas comprising a.

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