KR101559427B1 - Apparatus for removing offensive smell - Google Patents

Abstract

Disclosed is a malodor removal apparatus that removes odors contained in exhaust gas by injecting ozone water.
The malodor removing device
An exhaust gas transfer main pipe to which exhaust gas is transferred;
A malodor purifier connected to the exhaust gas transfer main pipe for injecting ozone water into the exhaust gas to remove odor; And
A suction blower connected to an outlet of the malodor purifier for sucking exhaust gas;
.

Description

Apparatus for removing offensive smell [0001]

The present invention relates to a malodor removing apparatus for removing odor contained in an exhaust gas by spraying ozone water, and more particularly, to an improved malodor remover capable of preventing damage to an ozone water spray nozzle and enabling efficient spraying.

There is known a device for reducing the odor generated in industrial waste, manure, food, and the like.

The odor components generated in the sewage treatment plant, the food treatment plant, the livestock wastewater treatment plant, the sludge incineration and drying facility, the waste landfill, and various chemical plants vary widely in composition of the pollutants depending on the generation source and source. Major odor inducing substances include hydrogen sulfide, Sulfur compounds such as mercaptans, nitrogen compounds such as ammonia and amines, volatile organic compounds (VOCs) such as benzene, toluene, ethylbenzene and xylene, and volatile sulfur compounds.

Fig. 1 shows a configuration of a conventional malodor removing apparatus.

Fig. 1A shows a device for removing odor with a medicine, and Fig. 1B shows a configuration of an apparatus for removing odor by injecting ozonated water.

The malodor purifying apparatus 10 shown in Fig. 1A includes a blower 102 and a scrubber 106. [ The blower 102 serves as a blower for pushing the exhaust gas toward the scrubber 106, and the scrubber 106 purifies the exhaust gas using chemicals.

The apparatus shown in FIG. 1A is problematic in that not only the residual sulfuric acid flows out in the course of purification using chemicals such as sulfuric acid, but also the malodor removing effect is not high.

The apparatus shown in FIG. 1B has been developed in order to alleviate the residual sulfuric acid in the apparatus shown in FIG. 1A and to enhance the odor removing effect, and mixes the ozone water with the exhaust gas, and then removes the odor with chemicals.

1b includes a blower 122, an ozonated water injection duct 124, and a scrubber 126. The blower 122, the ozone water injection duct 124,

The ozone water injection duct 124 is provided with an injection nozzle 124b for injecting ozone water in the exhaust gas transfer main pipe 124a, and mixes the ozone water with the exhaust gas to be transferred.

The scrubber 126 removes the ozone compound to exhaust the purified exhaust gas.

FIGS. 2A and 2B show the construction of the ozonated water injection duct shown in FIG. 1B.

Referring to FIGS. 2A and 2B, the ozone water injection duct 124 includes an exhaust gas transfer duct 124a and a nozzle 124b. The nozzle 124b protrudes from the inner wall of the conveying duct 124 through which the exhaust gas is conveyed. The ozone water injected from the nozzle 124b is mixed with the exhaust gas conveyed through the conveyance duct 124a.

However, in such a conventional nozzle mounting structure, there is a problem that the ozone water injected from the nozzle 124b can not be effectively mixed with the exhaust gas.

Referring to FIGS. 2A and 2B, the nozzle 124b is installed to protrude from the inner wall of the conveying duct 124a toward the central portion, since the nozzle 124b is pierced through the wall of the conveying duct 124a. Accordingly, a portion where the ozone water injected from the nozzle 124b does not contact the exhaust gas, that is, a dead zone, is generated.

Fig. 3A shows the ozone water jetting angle in the nozzle.

3A, when the size (diameter) of the exhaust gas transfer pipe (main pipe) and the transfer duct 104a having the nozzle 104b are the same, the size of the main pipe is calculated by calculating the speed and amount of the exhaust gas transfer, The size of the pipe is not determined. In other words, since the piping is large, the number of squares is large and the removal efficiency of the odor actually differs.

Specifically, the injection locus of the nozzle 124b becomes conical, but the base of the cone becomes the middle portion of the conveying duct 124a. If the ozone water injected from the nozzle 124b is able to reach the other end of the conveying duct 124a, that is, if cross-injection is possible, the dead zone can be eliminated, but in practice the exhaust gas is delivered at a high speed, impossible.

Even if cross injection is performed, the exhaust gas and the mist will be ejected to the outside through the gap between the nozzle and the hole. This also becomes a problem.

In practice, due to the speed of the exhaust gas, the exhaust gas is bent toward the direction of the exhaust gas from one side as shown by a thin solid line in FIG. 2B.

As another method for improving the spray angle of ozone water, it is considered to use a plurality of nozzles in a stacked manner, but it is difficult to apply this method to a conventional odor purging apparatus.

FIG. 3B is a view for showing the installation state of the nozzles and the spraying angle in the conventional malodor removing apparatus.

As shown in Fig. 3B, the nozzles are symmetrically arranged on a line passing through the central axis of the transfer pipe 124a. In order to solve the blind spot, a nozzle 214b must be additionally installed. In this case, the nozzle 214b is installed adjacent to the nozzle installed upwards or downwards. In other words, it is necessary to further drill holes for nozzles for fresh installation in addition to the holes for the existing nozzles. However, as can be seen in FIG. 2A, the overall size of the nozzles and the circumference of the transfer pipe 124a In comparison, the installation space for installing additional nozzles is so small that nozzles can not be added, which makes it difficult to eliminate blind spots.

Since the nozzle 124b protrudes from the inner wall of the conveying duct 124a, the nozzle 124b comes into direct contact with the exhaust gas, and the adsorbent A phenomenon occurs in which the particles are entangled with the nozzle 124b, and when this phenomenon is severe, the nozzle 124b is clogged.

When the nozzle 124a is contaminated, the blind spot is enlarged correspondingly and the cleaning efficiency is drastically lowered.

On the other hand, since the nozzle 124b is directly attached to the wall surface of the conveying duct 124a, the conventional odor eliminating apparatus 12 has a problem that it is not easy to check and replace the nozzle 124b.

Fig. 4 shows a state in which the nozzle is clogged by the adsorbing particles.

As shown in FIG. 4, when the adsorbent particles included in the exhaust gas are entangled in the nozzle 104b, the ejection action of the nozzle 104b is rapidly deteriorated or, in the case of severe, clogged.

On the other hand, the ozone water and the exhaust gas react inside the conveying duct 104a.

The exhaust gas from the manure treatment plant is about 80 ° C ± α), so that the mixture of ozone water and exhaust gas in the fog state generates water (steam) in a vapor state. When the water vapor and the ozonated water in the fog state are condensed, they flow out of the space between the pipe 124a and the nozzle 124b and flow down to the outside of the pipe 124a to oxidize the pipe 124a. When the exhaust gas is completely purified, it is sprayed with clear water. However, when the exhaust gas is exposed to the outside without purification, odor and oxidation leave a bad mark on the pipe 124a.

On the other hand, the conventional malodor purifying apparatus as shown in FIG. 1 is equipped with a large-sized scrubber 106, which has a problem that a space for installing the apparatus is very large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a malodor purifying apparatus of an improved structure capable of effectively exerting a spraying action of a nozzle, increasing the service life of the nozzle, For that purpose.

It is another object of the present invention to provide a malodor purifying apparatus capable of obtaining an effective odor purifying effect even on a small scale.

According to an aspect of the present invention, there is provided a malodor purifying apparatus comprising:

An exhaust gas transfer tube through which exhaust gas is transferred;

A malodor purifier connected to the exhaust gas transfer pipe to inject ozone water into the exhaust gas to remove odor; And

A suction blower connected to an outlet of the malodor purifier for sucking exhaust gas;

And a control unit.

Here, the malodor purifier

A conveying duct having a cross sectional area smaller than that of the exhaust gas conveying main pipe;

A nozzle installed in contact with an outer circumferential surface of the conveying duct to inject ozone water into the exhaust gas;

A nylon filter for removing water vapor from the exhaust gas mixed with ozone water and lowering the feed rate of the exhaust gas;

And a control unit.

Here, it is preferable that the nylon screen has a larger cross-sectional area than the conveying duct.

Preferably, the apparatus further includes a solid-liquid separator installed at a front end of the malodor purifier for filtering the solid contained in the exhaust gas.

The malodor purifying apparatus according to the present invention can be downsized due to the use of a malodor purifier, and thus has an effect that maintenance is easy.

The malodor purifying device of the present invention has the effect of facilitating the management, cleaning, and replacement of the nozzles by providing the nozzles so as to contact the outer circumferential surface of the conveying duct.

The malodor purifying apparatus according to the present invention has an effect that the malodor purifier can be added in units of units, so that the installation is easy and the equipment cost is low.

Figs. 1A and 1B show a configuration of a conventional malodor removing apparatus.
FIGS. 2A and 2B show the construction of the ozonated water injection duct shown in FIG. 1B.
FIG. 3A shows the ozone water jetting angle in the nozzle of FIG. 2. FIG.
FIG. 3B is a view for showing the installation state of the nozzles and the spraying angle in the conventional malodor removing apparatus.
Fig. 4 shows a state in which the nozzle is clogged by the adsorbing particles.
5 shows a configuration of a malodor purifying apparatus according to the present invention.
Fig. 6 shows the configuration of the solids filtering network shown in Fig.
Fig. 7 shows the spray angle of the nozzle in the apparatus shown in Fig.
FIG. 8 shows the installation state of the nozzles in the malodor removing apparatus according to the present invention.
Fig. 9 shows an example of the configuration of a nozzle in the malodor removing apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

5 shows a configuration of a malodor purifying apparatus according to the present invention.

5, a malodor purifying apparatus 20 according to the present invention includes a solids filtering network 202, a malodor purifier 204, and a suction blower 204.

The solids screen 202 removes the solids contained in the exhaust gas.

Fig. 6 shows the configuration of the solids filtering network shown in Fig.

Referring to FIG. 6, the solids sieve network 202 includes a plurality of porous sieve beds 202a through 202n.

The sieving nets 202a-202n inside the solids sieve mesh 202 can be welded to the inside of the tube or fixed to the hanger by hooks similar to hooks. Layering the lines 202a-202n is to slow down the odor so that only light things can escape. Noodles 202a to 202n are preferably made of nylon or stainless steel, but they are irrelevant to malodorous materials. It may be very precise, but it can vary depending on the situation. The smaller the size of the holes of the filtering nets 202a to 202n, the better.

The malodor purifier 204 includes a feeding duct 204a, a nozzle 204b, and a nylon sieve 204c.

The conveying duct 204a preferably has a smaller diameter than the conveying main pipe 212 to which the exhaust gas is conveyed. This is to collect the widely distributed exhaust gas and to increase the pressure of the distant pipe during the transferring process so that the ozone water injected from the nozzle 204b can be mixed with the exhaust gas at a constant pressure and speed.

The nozzle 204b is installed so as to abut the outer circumferential surface so as not to protrude into the interior of the conveying duct 204a.

The nylon sieve 204c is for filtering the water vapor as much as possible and lowering the speed of the exhaust gas to induce the contact between the ozone water and the exhaust gas.

The pressure of the exhaust gas main pipe is very high. When this pressure passes through a nylon net with the same size of piping, a large amount of exhaust gas is mixed and discharged in the submerged state without purification because of the speed and pressure.

In order to prevent this, the pressure in the nylon screen 204c must be lowered. In this case, by expanding the space, the pressure is lowered so that the submerged mixer in the exhaust gas is trapped in the nylon net and only light air is discharged. Naturally, a large number of submersibles collect in the nylon mesh, and the flowing water is discharged through the bottom of the pipe.

Thus, the nylon net serves as a space for mixing ozone water and exhaust gas, and plays a very important role in preventing water vapor emission.

The cross-sectional area of the nylon screen 204c is preferably larger than the cross-sectional area of the conveying duct 204b. This is to allow the exhaust gas and the ozone water that have not been purified while passing through the conveying duct 204b to hit the nylon web and to be able to react evenly by giving space and time in which the pressure is lowered so that they are in contact with each other.

Further, in order to prevent water vapor from being discharged from the nylon sieve 204c, the size of the discharge gas transfer pipe and the size of the transfer pipe 204a are made small so that the water droplets are prevented from being blown against the wall.

On the other hand, it is preferable that the inlet of the nylon sieve 204c is installed at the bottom and the outlet is installed at the top. This is to increase the filtering efficiency by allowing the exhaust gas to flow downward and to be discharged upward.

For similar reasons, the outlet of the solids sieve mesh 202 is preferably disposed at the top.

A plurality of odor purifiers 204 may be installed in series or in parallel.

The suction blower 206 performs a function of sucking exhaust gas.

The suction blower 206 sucks the exhaust gas from the discharge port side of the exhaust gas, so that the possibility that the adsorbent particles are adsorbed to the nozzle 204b inside the malodor purifier 204 can be lowered. In addition, the mixing ratio of the ozone water and the exhaust gas can be increased.

Fig. 7 shows the spray angle of the nozzle in the apparatus shown in Fig.

Referring to FIG. 7, it can be seen that the nozzle 204b is installed in contact with the outer circumferential surface of the transfer pipe 204a. Due to such an installation structure, the dead zone is eliminated, and the nozzle 204b and the exhaust gas are not in contact with each other, thereby preventing clogging of the nozzle 204b.

In FIG. 7, two nozzles may be sprayed on both sides at intervals of 180 degrees, or in some cases three or more. In this way, the exhaust gas can be captured more completely than when injected vertically and horizontally.

All piping should be square pipe rather than cylindrical piping, easy to install and easy to catch square.

The size of equipment (cross-sectional area) is as follows.

A solids filter 202, a malodor purifier 204, an exhaust gas transfer pipe transfer duct 204a,

The solids filter 202 and the odor purifier 204 lower the velocity of the exhaust gas. The solids filtering mesh 202 prevents the solids from being discharged by the pressure, and the odor purifier 204 also reduces the speed, securing the time and space for contacting the ozone water and the exhaust gas, and discharging foreign matter, water vapor, As much as possible.

The diameter of the transfer duct 204a is smaller than that of the exhaust gas transfer pipe so that the exhaust gases and the ozonated water can contact each other and contact each other, thereby increasing the pressure of the entire piping.

That is, the pressure of the solid-liquid sieve 202 is reduced and the widely distributed exhaust gas is collected and agglomerated and the speed is increased to maintain the overall piping pressure evenly.

In the malodor purifier according to the present invention, since the malodor purifier has a smaller height and volume than a general scrubber, the movement and labor costs associated with installation are reduced as compared with the conventional scrubber.

The most important points to remove odor are: 1. concentration of ozonated water 2. injection method of ozonated water 3. contact space and velocity between exhaust gas and ozonated water 4. other (temperature, time, amount of odor).

The malodor removing apparatus according to the present invention controls the speed by controlling the size of the pipe, and controls the contact space by adjusting the cross-sectional area.

FIG. 8 shows the installation state of the nozzles in the malodor removing apparatus according to the present invention.

Referring to FIG. 8, the nozzle 204b is installed outside the transfer pipe 204a with the ozone water injection pipe 204d in between.

As described above, in the malodor removing apparatus 20 according to the present invention, the ozone water injection pipe 204d is provided outside the transfer pipe 204a and the nozzle 204b is provided at the tip of the ozone water injection pipe 204d Therefore, it is very easy to repair and replace the nozzle 204b. When the nozzle 204b is to be replaced, the nozzle 204b is separated and the ozone water injection pipe 204d is covered with a partition (not shown) or the like.

Fig. 9 shows an example of the configuration of a nozzle in the malodor removing apparatus according to the present invention.

Referring to FIG. 9, it is shown that a plurality of nozzles are bundled to constitute a nozzle jetting box, or a plurality of jetting nozzles are bundled to constitute a larger nozzle jetting port.

9, when the nozzle 204b is disposed on the outer circumferential surface of the transfer pipe 204a with the ozone water injection pipe 204d in between, the nozzle can be easily separated and coupled, so that the maintenance cost is reduced .

On the other hand, by providing a nozzle injection box in which a plurality of nozzles 204b are collectively provided, a blind spot in which the ozone water and the exhaust gas can not be mixed can be improved.

0 ... odor removal device
202 ... solids filter screen 204 ... odor eliminator
206 ... suction blower
204a ... Feed duct 204b ... Nozzle
204c ... nylon sieve mesh 204d ... ozone water injection pipe

Claims (8)

delete A malodor removing apparatus for removing odors contained in an exhaust gas by injecting ozone water,
An exhaust gas delivery main pipe through which exhaust gas is delivered;
A plurality of odor purifiers connected to the exhaust gas transfer main pipe for injecting ozone water into the exhaust gas to remove odors, and connected in series with each other; And
And a suction blower connected to an outlet of the malodor purifier for sucking exhaust gas,
The stench purifier
The exhaust gas is collected and the ozone water injected from the nozzles is mixed with the exhaust gas at a constant pressure and speed while increasing the pressure drop while the exhaust gas transfer main pipe is being conveyed by the exhaust gas transfer main pipe. ;
Wherein the nozzle is provided so as to be in contact with the outer circumferential surface of the conveying duct to inject ozone water into the exhaust gas,
And a nylon sieving net having a cross-sectional area larger than the cross-sectional area of the conveying duct for filtering water vapor from the exhaust gas mixed with ozone water, lowering the speed of the exhaust gas, and inducing contact between the ozone water and the exhaust gas,
Characterized in that the speed of the exhaust gas is accelerated in the conveying duct and slowed down in the nylon sieve network so that mixing of the ozone water and the exhaust gas is facilitated.
delete 3. The method of claim 2,
And an ozone water injection pipe provided on an outer circumferential surface of the conveying duct,
Wherein the nozzle is disposed at a front end of the ozone water injection pipe and is disposed behind the outer circumferential surface of the conveyance duct.
5. The malodor removing apparatus according to claim 4, wherein a nozzle jetting box provided with a plurality of nozzles is provided at the tip of the ozone water jetting pipe. delete [6] The nylon filter according to claim 4, wherein the nylon filter has an exhaust gas inlet at a lower portion thereof and an exhaust gas outlet at an upper portion thereof. The exhaust gas is supplied through the conveying duct to the lower portion thereof, And the efficiency is improved.
3. The malodor removing apparatus according to claim 2, further comprising a solids filtering unit installed at a front end of the malodor purifier for removing solids contained in the exhaust gas.

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