KR20010064776A - Dust collector - Google Patents

Abstract

PURPOSE: A dust collecting equipment is provided, which can collect dust by first and second dry dust collectors and a wet scrubber and so can prevent any air pollution caused by dust emitted from lime calcination process. CONSTITUTION: The system comprises the followings: (i) a first dry dust collecting part (113) in which dust contained in exhaust gas drops to the lower part and is collected at a hopper (117); (ii) a second dry dust collecting part which generates eddy by the inflow force of gas flowed from the first dry dust collecting part and is composed of first and second eddy generating housings; and (iii) a wet scrubber (103) into which gas that passed the second dry dust collecting part flows, and which convert dust contained in the gas into slurry.

Description

Dust collector {Dust collector}

The present invention relates to a dust collector, and in particular, in order to minimize the dust contained in the flue gas generated during the firing of limestone and dolomite to the atmosphere through the chimney to install a second dry dust collector, the dust is discharged to the atmosphere. The present invention relates to a dust collecting apparatus for preventing the dust.

In general, lime kilns are charged with lime and dolomite and fired at a high temperature of 900 ° C. in a rotary kiln to produce products. Although the first dry dust collector and the wet dust collector are installed and collected to minimize dust emission before being discharged into the atmosphere via (stack: 105), several problems are exposed.

The dust-containing gas flowing into the dust collector passes through the dry dust collector 113. At this time, the dust 116 falls to the bottom and is accumulated in the dust storage hopper 117 while passing through the dust discharge wave 18. Dust accumulated in the dust storage hopper 117 is subsequently collected and processed. Meanwhile, dust is first removed from the first dry dust collector 113 and moved to the wet dust collector B through the dust collecting duct 102 by an induced drafe fan. In the wet dust collecting unit B, the dust collecting unit is sprayed through the collecting line 112. On the other hand, the injection dust collecting is injected from the top of the ring tube 107 to the bottom. At this time, the dust contained in the exhaust gas passing through the contact with the cooling water becomes a slurry and falls to the bottom. At this time, the slurry tanks 104 and 110 are mounted at both sides to move the loaded slurry. On the other hand, the dust passing through the wet dust collecting part (B) is discharged to the upper portion of the screw bar (103).

First: in the first dry dust collecting unit 113, only the dust 116 of the heavy portion by the suction pressure of the produced draft fan (IDF) flows into the dust collecting discharge hole 114, the dust storage hopper 117 And a large amount of dust passes through the dust collecting duct 102.

Second: The dust is not collected in the first dry dust collecting unit 113 is a wet dust collecting device by spraying water from the ring tube 107 and the scrubber venturi (108), which is a wet dust collector, but the wet dust is generated a lot of dust Even if dust is collected normally, dust is released into the atmosphere above the regulated level, causing environmental pollution.

Third: In order to solve the second problem, a large amount of dust collection was used, but the phenomenon that the dust collection is discharged into the atmosphere together with the exhaust gas 106 through the chimney 105, the problem of not using excessive collection As a coating (coating) is formed all over the inside of the wet dust collecting unit, the load of the facility is increased, which causes a problem of removing the coating after the facility is stopped.

The present invention is to solve the above-mentioned problems, dust collecting apparatus to improve the dust removal effect by installing a second dry dust collecting unit in which the vortex is generated in the vertical direction at the rear end of the first dry dust collecting unit for removing the dust contained in the exhaust gas The purpose is to provide.

The present invention for achieving the above object is a first dry dust collecting unit for allowing the dust contained in the exhaust gas is loaded to the lower after the exhaust gas is introduced, and is connected by a channel to the rear end of the first dry dust collecting unit and the first A first vortex generating housing connected to the channel in a vertical direction with respect to the channel so as to generate a vortex by the inflow force of the gas flowing from the dry dust collecting unit and to allow the vortex to pass therethrough, and to the outside of the first vortex generating housing The second dry dust collecting unit consisting of a second vortex generating housing, and the gas passing through the second dry dust collecting unit is introduced, characterized in that made by including a wet dust collecting unit for making a slurry of dust contained in the gas by dust collection By dust collector.

1 is a view showing a conventional exhaust gas dust collecting device.

Figure 2 (a) is a view showing a flue gas dust collector according to the present invention.

Figure 3 (a) is an exploded view of the dry dust collector according to the present invention.

Figure 3 (b) is a front view and a plan view of the channel according to the present invention.

4 is a view showing a dust collector according to the present invention.

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

101: I.D.F (induced draft fan) 102: Dust collection duct

103: scrubber 104: slurry tank

105: stack 106: exhaust gas

107: wet device ring tube

108: wet apparatus venturi 110: slurry pump

111: circulating dust pump 112: dust collecting line

113: first dry dust collector 114: dust dust discharge hole

114a: dust exhaust hole 116: dust

117: dust storage hopper

118: dust discharge

301: second vortex generating housing 302: second vortex generating housing

303: inner dust collector fixing bar

304: dust induction plate

305: dust collecting duct 306: channel

307: dust induction discharge hole 308: dust induction Chamba

A: second dry dust collector B: wet dust collector

Hereinafter, with reference to the accompanying drawings will be described the present invention.

Figure 2 (a) is a view showing the exhaust gas dust collector according to the present invention, Figure 3 (a) is an exploded view of the dry dust collector according to the present invention, Figure 3 (b) is a front view and a plan view of the channel according to the present invention 4 is a view showing a dust collector according to the present invention. On the other hand, the description of the peripheral device of the first dry dust collecting unit 113 and the peripheral device of the wet dust collecting unit (B) is replaced by the contents described in the prior art, and here the second dry dust collecting unit (301,302) which is the main part of the present invention. The explanation will be given based on the center.

The present invention is caused by the rotational centripet of dust generated during limestone firing, the outer second vortex generation housing (301) to allow the exhaust gas to rotate inside by the suction pressure of the idf (101) in the rear end of the first dry dust collector (113) Install it. On the other hand, the first vortex generating housing 302 is installed inside the second vortex generating housing 301. The first and second vortex generating housings are fixed by the dust collecting device fixing bar 303.

Plates 304 were attached to the inner surface of the first vortex generating housing 302 at regular intervals and dust-inducing plates 304a were attached to the plates 304. Meanwhile, a dust collecting duct 305 is installed at the center of the first vortex generating housing 302 so that the exhaust gas and the dust can rotate in the first and second vortex generating housings 301 and 302, and the first dry dust collecting unit ( 113) and the second dry dust collecting unit (A) is connected to the channel (306) to provide a dust induction discharge hole 307 in the channel (306). A chamber 308 is installed below the hole 307 to store dust.

When the dust that does not flow into the dust collector discharge hole 114 from the first dry dust collector 113 arrives at the first vortex generating housing 301, the dust is rotated by a centripetal force caused by rotation, and dust having a large specific gravity flows out to the bottom. .

At the same time, in the second vortex generating housing 302, dust which does not flow into the first dry dust collecting unit 113 and the first vortex generating housing 301 is in contact with the induction plate 304 of the second vortex collecting housing 302. It was allowed to flow into the lower cone part.

On the other hand, the inside of the channel 306 connected to the first dry dust collecting device 113 has been manufactured and installed a hole 307 to induce dust discharged. The dust induction chamber 308 is installed below the dust induction discharge hole 307 so as to store the discharged dust so that the dust may flow out into the dust storage hopper 117 under the first dry dust collecting unit 113.

In addition, the remaining amount of dust can be collected in the ring tube 107 and the venturi 108, which is a wet dust collector, to reduce the amount of dust to prevent being discharged into the atmosphere with the flue gas through the chimney 105 Environmental pollution caused by dust can be prevented.

According to the present invention, the dust generated during the firing of limestone is prevented from being discharged into the atmosphere through the chimney by installing the first dry dust collector and the second dry dust collector, but the first and second dry and wet dust collectors are used for dust generation. Compared to dust collection efficiency, dust is discharged into the air, causing environmental pollution. Dust collector and channel are installed at the rear end of the first dry dust collector to improve dust dust collection efficiency. There is an effect that can prevent the occurrence.

Claims (2)

A first dry dust collecting part configured to allow the dust contained in the exhaust gas to fall down and be loaded after the exhaust gas is introduced, The first dry dust collector is connected to the rear end by a channel, and generates a vortex by the inflow force of the gas flowing from the first dry dust collector and is connected in a vertical direction with respect to the channel so that the vortex can pass therethrough. A second dry dust collecting unit comprising a first vortex generating housing and a second vortex generating housing mounted outside the first vortex generating housing; The dust collecting device, characterized in that the gas passing through the second dry dust collector is introduced and comprises a wet dust collector to make the dust contained in the gas by the dust collecting. The method of claim 1, The dust collecting device, characterized in that the outer wall of the first vortex generating housing is provided with a plurality of plates protruding outward so that the dust contained in the exhaust gas moving to the outside of the first vortex generating housing is attached to the plate.