KR20030054316A - 2 Phase Wet-type Dust Collector for Reducing Pollution Gas out of the Stack - Google Patents

Abstract

PURPOSE: A two-phase wet type dust collector for reducing polluted gas released from stack is provided, which can collect dust efficiently and automatically control dust collected water level without using electric device. CONSTITUTION: The wet type dust collector comprises a primary dust collector installed at bottom of the stack(104); a secondary dust collector installed at a position higher than the primary dust collector and lower than the stack inlet; a stack to which an air draft hole connecting to the primary dust collector is installed; and a dust collected water collecting device, wherein the primary dust collector is constituted by a main inlet, top inlet, a plurality of guide plates(304) and water spray line, the secondary dust collector is constituted by a main inlet, dust collecting water spray fan(301), a driving device, a water spray line, and the dust collecting water collecting device is constituted by a storage tank, a dust collecting water control fixing cap, dust collecting water control ball(305) and dust collecting water main flow control(306).

Description

Multi-phase Wet-Type Dust Collector for Reducing Pollution Gas out of the Stack}

The present invention relates to a multi-stage wet dust collector for reducing pollutant gases in a chimney, and more particularly, to efficiently discharge unwanted substances such as dust contained in a large amount of gas such as exhaust gas into the atmosphere through the chimney. The present invention relates to a multi-stage wet dust collector for reducing pollutant gas in a chimney.

In general, many factories use fossil fuels in the manufacture of their products, resulting in the release of large amounts of pollutants into the atmosphere along with the by-products of combustion. Therefore, in the past, numerous kinds of pollutant emission preventing devices have been proposed.

Rotary lime kilns used in steel mills, for example, are facilities that produce products by charging limestone and dolomite into a furnace and firing them at a high temperature of about 900 ° C. In this rotary kiln, as shown in FIG. 1, before the dust 101 contained in the exhaust gas generated in the process of firing the product is discharged to the atmosphere through the chimney 104, the dust 101 is reduced in advance. In order to firstly perform the first dry treatment through the first dry dust collector 100, and then to collect the dust not yet collected dust 101 was subjected to the second wet treatment through the scrubber (103). .

By the way, in practice, in the primary dry dust collector 100, most of the dust 101 having a light specific gravity is simply sucked up by the strong suction pressure of the fan 102 and passed through the dust collection duct 100a. There was a problem that only this heavy dust 101 can be collected in the primary dry dust collector (100).

In addition, in order to collect the dust 101 which is not collected in the primary dry dust collector 100, the scrubber 103 was attempted to collect dust while putting water 105a, but in reality, the amount of dust 101 was generated. Since there are too many dusts in the scrubber 103, the dusts 101 are not collected at all, so that the dusts 101 are discharged to the atmosphere above the legal limit, thereby causing environmental pollution.

On the other hand, the dust (101) is collected by the scrubber 103 in this way, the slurry (Slurry) that is the dust collected by dropping the water 105a and dust 101 is combined in the slurry tank 107, the level meter ( The slurry pump 108 is operated by the 110 to be sent to the slurry channel 109 for post-treatment. When the level gauge 110 malfunctions, the slurry overflows the slurry tank 107 to prevent water and soil contamination. There was also a problem that occurred.

The present invention has been made in order to solve the problems of the prior art as described above, the gas having a dust 101 passed through the primary dry dust collector 100 (hereinafter referred to as "polluting gas") in a wet dust collector In addition, by using the simple wet treatment and the rotary wet treatment, the dust collector is collected at a higher efficiency, and the float type slurry discharge device is installed in place of the level gauge 110, thereby providing a multi-stage wet dust collector for reducing the pollutant gas in the chimney. It is to provide.

1 is an overall conceptual diagram of a conventional exhaust gas dust collector;

2 is a configuration diagram of the wet dust collecting equipment of the present invention,

3 is a perspective view and a front view of the fan 301 of the present invention,

4 is a perspective view and a front view of the induction plate 304 of the present invention,

5 is a view for explaining the configuration of the dust collecting apparatus of the present invention, Figure 5a is a low water level, Figure 5b is a high water level, Figure 5c is a plan view and a configuration of the fixed cap 307.

<Description of Symbols for Major Parts of Drawings>

100: primary dry dust collector 100a: dust collection duct

101: dust 102: fan (Induced Draft Fan)

103: Scrubber 104: Stack

105: Water Pump 105a: Water

107: Slurry Tank 108: Slurry Pump

109: slurry channel 110: level meter

301: Spraying Fan (Spray Fan) 301a: Pulley (Pulley)

302: Motor for rotation 303: V-belt for connection rotation

304: Induction plate 304a: Induction plate hole

305: dust collecting control ball

306: dust collection flow rate main control

307: dust collection control fixing cap (308) 308: dust collection control fixing cap support

309: dust collector 310a: narrow space

310b: wide spacing 311: filter

In order to achieve the above technical problem, the present invention is a primary dust collector installed at least below the chimney 104, as shown in FIG.

A secondary dust collector installed at a position higher than the primary dust collector and lower than the tip of the chimney 104;

A chimney 104 having a vent hole directed downward to the primary dust collector;

It is composed of a dust collecting device installed below the primary dust collecting unit.

Here, the primary dust collecting unit is installed on the side of the body to block the outside air and the main inlet for introducing contaminated gas,

An upper inlet opening at the bottom of the chimney 104 to introduce contaminated gas;

A plurality of induction plates 304 formed with a plurality of vent holes installed downward in a position that vertically blocks the polluted gas flowing from the main inlet;

A sprinkling line installed on the induction plate 304 to spray water 105a toward the induction plate 304;

It consists of an outlet for passing the gas passing through the watering line to the secondary dust collecting unit.

In addition, the secondary dust collector is connected to the outlet of the primary dust collector in the lower portion of the body blocking the outside air and the main inlet for introducing contaminated gas;

A dust collecting spray fan 301 installed on the body to rotate about the pulley 301a to wave the introduced gas;

Drive means for rotating the dust collecting spray fan 301,

It is composed of a sprinkling line for spraying the water 105a toward the undulated gas at a position that does not interfere with the rotating dust-collecting spray fan 301.

And the dust collecting device is formed in the shape of the upper gradually becomes narrower toward the bottom, the lower portion is connected to the slurry channel 109, the storage tank for storing the dust collecting 309 flowing from the primary dust collecting unit,

A dust collecting control fixing cap 307 which is formed to have a portion of the lower surface open and has a plurality of guide plate holes 304a on the upper surface thereof and is fixed to an upper portion of the inner wall of the storage tank;

A dust collecting control ball 305 which is installed inside the dust collecting control fixing cap 307 and moves up and down as the water level of the collecting dust 309 rises and falls,

The lower portion is formed in a reverse conical shape is connected to the dust collecting control ball 305 is composed of a dust collecting flow rate main control 306 to move up and down together.

Hereinafter, the configuration of the present invention as described above will be described in more detail through examples. In the reference drawings for the present invention, detailed description is omitted by using the same reference numerals for components having substantially the same configuration and function.

As shown in FIG. 2, the present invention is composed of at least a primary dust collector, a secondary dust collector, a chimney 104, and a dust collector. Here, the primary dust collector is installed below the chimney 104, the secondary dust collector is installed at a position higher than the primary dust collector, lower than the tip of the chimney 104, the chimney 104 is the primary It is provided to have a ventilation hole toward the dust collector, and the dust collecting device is configured to be installed below the primary dust collector. This is because contaminated gases, such as waste gas, have a temperature above room temperature and are upwards, and the dust collector is downwards.

Here, the primary dust collector is composed of the main inlet, the upper inlet, the guide plate 304, the watering line and the outlet.

The main inlet is installed on the side of the body to block the outside air is installed to introduce the polluted gas. Therefore, the gas is mainly input to the main inlet, it is preferable that the conventional dry dust collector is installed via the fan 102 in the previous step of the main inlet.

The upper inlet is installed at the bottom of the chimney 104 to introduce the polluted gas. Therefore, the uncollected air in the secondary dust collector sinks downward, and is configured to be input again to the primary dust collector through this upper inlet and recollected.

As shown in FIG. 4, the induction plate 304 is installed downward in a position that vertically blocks the polluted gas introduced from the main inlet, and each of the induction plates 304 is provided to form a plurality of vent holes. According to the embodiment, three guide plates 304 are installed, but the main inlet side is shortened, and the length is gradually increased, and the outlet side can be formed long. Therefore, some gases go straight through the vent hole, and some are blocked and distributed to increase the dust collection effect.

The sprinkling line is installed on the induction plate 304 to spray the water 105a toward the induction plate 304. Therefore, the gas straight and dispersed by the guide plate 304 is mixed with the sprayed water 105a and falls downward to be collected in the dust collecting apparatus.

The outlet is installed to send gas passed through the watering line to the secondary dust collecting unit. Therefore, the dust 101 which is not collected in the primary dust collector is configured to be re-collected in the secondary dust collector.

In addition, the secondary dust collecting unit is composed of a main inlet, a dust collecting spray fan 301, a drive means and a watering line.

The main inlet is connected to the outlet of the primary dust collector in the lower portion of the body blocking the outside air is installed to introduce the polluted gas.

The dust collecting spray fan 301 is installed to rotate around the pulley 301a on the body as shown in FIG. In addition, depending on the installation angle of the dust collecting spray fan 301 and the direction of the inlet and outlet, it can be configured to generate a negative pressure therein to more strongly suck the gas from the primary dust collecting unit. In this case, even if the toe output of the fan 102 is weak, there is an effect to compensate for this. In either case, the gas is stirred at high energy by waves.

The driving means is installed to rotate the dust collecting spray fan 301. According to the embodiment, after the pulley 301a is installed on the rotating shaft, the connecting rotation v-belt 303 is fastened to the pulley 301a, and the rotating motor 302 drives the connecting rotation v-belt 303. Can be configured to Alternatively, the rotation motor 302 may directly drive the pulley 301a, and a reduction gear may be provided in the rotation motor 302.

The watering line is installed to spray the water 105a toward the undulated gas at a position that does not interfere with the rotating dust collecting spray pan 301. The dust collecting spray fan 301 also plays a role of high energy provision in relation to this water 105a. Therefore, the dust 101 of the gas being stirred with high energy is more easily combined with the sprayed water 105a. The combination of the dust 101 and the water 105a falls downward and collects in the dust collecting device.

Here, the third or fourth dust collector may be installed between the primary dust collector and the secondary dust collector, or between the secondary dust collector and the chimney 104, wherein the third or fourth dust collector is provided in a plurality of passages. It may be composed of a filter 311 having a hole, and a sprinkling line for spraying the water 105a toward the filter 311. In addition, since the spraying line is installed in any gas distribution path, it is possible to increase dust collection efficiency.

On the other hand, the dust collecting device as shown in Figure 5a, 5b and 5c storage tank, dust collecting control fixed cap 307, dust collecting control ball 305 and dust collecting flow rate main control 306 It is composed.

The storage tank is formed in a form in which the upper portion becomes narrower gradually toward the lower side, the lower portion is connected to the slurry channel 109 is installed to store the dust collector 309 flowing from the primary dust collector. The inner wall of the storage tank serves as a drain valve together with the outer wall of the dust collecting flow rate main control 306.

As shown in FIG. 5C, the dust collecting control fixing cap 307 has only a part of the gap where the dust collecting control ball 305 does not come out and has a plurality of guide plate holes 304a on the upper surface thereof. It is formed to be fixed to the upper portion of the inner wall of the storage tank. Therefore, the maximum and minimum heights at which the dust collecting control ball 305 can be raised are determined by the heights of the upper and lower surfaces of the dust collecting control fixing cap 307. Accordingly, the maximum and minimum amounts of the collecting dust 309 are also determined. do.

The dust collecting control ball 305 is installed inside the dust collecting control fixing cap 307 and is installed to lift together as the water level of the dust collecting 309 rises. To this end, the dust collecting control ball 305 may be filled with air or a light gas, or may be formed of a porous material such as styrofoam and formed with a protective film on the outside.

The dust collecting flow rate main control 306 has a lower portion formed in a reverse conical shape and is connected to the dust collecting control ball 305 to be elevated together. At this time, according to the embodiment shown in the drawings of FIGS. 5A and 5B, the uppermost width, that is, the maximum width portion of the reverse cone of the dust collecting flow rate main control 306 is configured to be smaller than the minimum width portion of the storage tank, so that the minimum The dust collector 309 is drained downward.

On the other hand, although not shown otherwise, after the maximum width portion of the reverse cone shape of the dust collection flow rate main control 306 is configured to be larger than the minimum width portion of the storage tank, the reverse cone shape of the dust collection flow rate main control 306 Since the maximum width portion is positioned above the minimum width portion of the storage tank, when the water level is low, the bottom surface of the maximum width portion of the reverse cone of the dust collecting flow rate main control 306 and the upper surface of the minimum width portion of the storage tank contact each other. If the dust collector 309 is not drained to the bottom, and the water level is high, a space is created between the bottom surface of the maximum width portion of the reverse cone of the dust collection flow rate main control 306 and the top surface of the minimum width portion of the storage tank. It is also possible to configure the hexadecimal number 309 to be drained downward.

Hereinafter, the operation of the present invention having the above configuration will be described.

When gas such as dust 101 generated by operation of a rotary kiln, exhaust gas such as exhaust gas containing soot, etc., enters the main inlet of the primary dust collector by driving the fan 102, the gas is, for example, three stages. It collides with and is distributed with the guide plate 304 installed as. At this time, since the gas that has traveled straight through the guide plate hole 304a formed in the guide plate 304 collides again at the next stage, dispersion is increased.

The dust 101 included in the gas is combined with the water 105a sprayed from the sprinkling line installed at the top thereof, and then falls downward to be collected by the dust collecting device. At this time, the uncollected gas continues to exit the outlet 2 It is input to the car dust collecting unit.

When gas enters through the main inlet of the secondary dust collector, the gas is pulsated when the pulley 301a is rotated by the driving means. And when the water 105a is sprayed by the water spray line toward the pulsated gas at a position that does not interfere with the rotating dust-collecting spray fan 301, the water 105a is also wavered.

By the wave, the gas and the water 105a have high energy and are easily combined. The combined mixture is then dropped downward and collected in the dust collecting device, where the uncollected gas continues to exit the outlet and enter the inlet of the chimney 104.

If a third dust collector is installed at the front end of the inlet of the chimney 104, the dust 101 tangled in the filter 311 is collected by the spraying process of the spraying line and then falls downward to be collected by the dust collector. At this time, the gas not collected is continued to enter the inlet of the chimney (104).

Since the specific gravity of the dust 101 in the chimney 104 is heavier than air, the dust is collected at a lower portion, and the upper inlet is formed at the lower portion of the chimney 104 to connect with the upper portion of the primary dust collector. It is introduced into the secondary dust collecting unit and undergoes a re-collecting process, and since the gas component of the dust collecting is relatively light in specific gravity, it proceeds to the top of the chimney 104 and is discharged to the outside air.

On the other hand, when the amount of the dust collector 309 collected in the storage tank lower than the primary dust collector is small, as shown in Figure 5a the gap between the storage tank inner wall and the outer wall of the dust collection flow rate main control 306 is minimized ( 310a) If the drain amount is minimum and the amount of the dust collector 309 is large, the interval is widened (310b) as shown in FIG. 5B to increase the drain amount.

However, as in the above-described other embodiment, the maximum width portion of the dust collecting flow rate main control 306 is formed larger than the minimum width portion of the storage tank, and the dust collecting flow rate main control 306 is formed on the minimum width portion of the storage tank. When installed so that the maximum width portion is located, when the amount of dust collecting 309 collected in the storage tank is small, there is no gap between the inner wall of the storage tank and the outer wall of the collecting flow rate main control 306 to prevent drainage, In the case where the amount of 309 is large, the interval becomes wider and the amount of drain increases.

Therefore, according to the amount of the dust collector 309 flowing from the top level adjustment is automatically maintained automatically without using an electric device such as the level meter 110 or the pump 108.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Various modifications and variations are possible, of course, within the scope of equivalents of the claims to be described.

Therefore, according to the present invention, by installing in place of the scrubber 103 to effectively collect the dust 101 to reduce the amount of dust discharged to the atmosphere, and automatically set the level of dust collecting (309) without using an electric device It is very effective to prevent water pollution and soil pollution by preventing overflow.

Claims (1)

In the multi-stage wet dust collector for reducing the polluting gas of the chimney, At least a primary dust collector installed below the chimney 104, A secondary dust collector installed at a position higher than the primary dust collector and lower than the tip of the chimney 104; A chimney 104 having a vent hole directed downward to the primary dust collector; Composed of a dust collecting device installed below the primary dust collecting unit, The primary dust collector is installed on the side of the body to block the outside air and the main inlet for introducing contaminated gas, An upper inlet opening at the bottom of the chimney 104 to introduce contaminated gas; A plurality of induction plates 304 formed with a plurality of vent holes installed downward in a position that vertically blocks the polluted gas flowing from the main inlet; A sprinkling line installed on the induction plate 304 to spray water 105a toward the induction plate 304; Consists of an outlet for passing the gas passing through the watering line to the secondary dust collector, The secondary dust collector is connected to the outlet of the primary dust collector in the lower portion of the body to block the outside air inlet for introducing a polluted gas, A dust collecting spray fan 301 installed on the body to rotate about the pulley 301a to wave the introduced gas; Driving means for rotating the dust collecting spray fan 301, It is composed of a spraying line for spraying the water 105a toward the waved gas at a position that does not interfere with the rotating dust-collecting spray fan 301, The dust collecting collecting device is formed in a shape in which the upper portion is gradually narrowed toward the lower side, the lower portion is connected to the slurry channel 109, the storage tank for storing the dust collecting 309 flowing from the primary dust collecting unit, A dust collecting control fixing cap 307 which is formed to have a portion of the lower surface open and has a plurality of guide plate holes 304a on the upper surface thereof and is fixed to an upper portion of the inner wall of the storage tank; A dust collecting control ball 305 which is installed inside the dust collecting control fixing cap 307 and moves up and down as the water level of the collecting dust 309 rises and falls, Multi-stage wet dust collector for reducing the polluting gas of the chimney, characterized in that the lower portion is formed in a reverse conical shape is connected to the dust collecting control ball 305 is configured to move up and down together.