KR20140101971A - Treatment Apparatus fot exhausting gas in boiler - Google Patents

Abstract

A treatment apparatus for treating combustion gas including water soluble toxic gas discharged from a boiler according to an embodiment of the present invention comprises a frame and a water curtain forming device. The fame comprises a gas inlet where the combustion gas discharged from the boiler is delivered; a gas outlet where the combustion gas is discharged; and a gas passage which connects the gas inlet and the gas outlet. The water curtain forming device forms a water curtain crossing the gas passage. Accordingly, the toxic gas such as water soluble sulfurous acid gas and nitrite gas included in the combustion gas can be effectively eliminated by dissolving in the water when the combustion gas passes through the multiple water curtains positioned in the water passage.

Description

TECHNICAL FIELD [0001] The present invention relates to a boiler flue gas treating apparatus,

The present invention relates to a boiler combustion gas processing apparatus, and more particularly, to a boiler combustion gas processing apparatus for filtering air pollutants generated after burning fuel.

A boiler is a device that is used for heating, hot water supply, etc., by using generated heat after burning various materials. In particular, when raw materials such as kerosene, such as general household boilers, are used, many pollutants are not emitted. However, there is a problem in that the cost is increased when the fuel so used is used for a boiler used for raising the internal temperature of a vinyl house or the like.

In order to solve this problem, it is possible to use raw materials such as general wood, but wood is not easily available and has disadvantages such as destruction of natural environment. As another alternative, wastes such as waste tires and rubber can be used as fuel. These wastes have an advantage of being very economical because they are not costly to purchase. However, since such waste is discharged in large quantities by air pollutants such as sulfur dioxide gas and nitrite gas, countermeasures are urgently needed.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a boiler combustion gas processing apparatus capable of effectively separating and discharging sulfur dioxide gas or nitrite gas from a combustion gas of a boiler using waste such as waste tire, Lt; / RTI >

In order to solve the above-described problems, an embodiment of the present invention provides a method of controlling a combustion engine, including: a gas inlet through which a combustion gas discharged from a boiler flows; a gas outlet through which a combustion gas introduced through the gas inlet is discharged; A frame including a gas flow path for supplying a gas; And a water curtain forming apparatus for forming a water curtain in a direction across the gas flow path.

The gas outlet is formed above the gas inlet, and the water curtain is formed in the direction of gravity.

The cross-sectional area of the gas flow path may be increased or decreased, and the water curtain may be formed at a point where the cross-sectional area of the gas flow path decreases.

A plurality of the water curtains are formed.

The gas flow path is branched into two or more, and the water curtain is formed in each of the branched gas flow paths.

And a spray part for spraying water powder into the gas flow path.

It is effective that the spray portion injects water powder onto the gas flow path adjacent to the gas inlet.

And a water holding unit for holding water on the gas flow channel.

It is effective that the water retainer is formed so that water tied to the water retainer seals the flow path.

The water curtain forming apparatus may further include: a water supply unit for supplying water into the gas flow path; And a water curtain forming plate that receives water from the water supplying portion and drops through a water curtain forming tip formed at one end to form a water curtain.

The water curtain forming plate is formed so that the remaining portion except for the water curtain forming tip is sealed in the frame to form the gas flow path.

Wherein the water curtain forming plate is formed by stacking a plurality of the water curtain forming plates vertically in the gravity direction and water falling through the water curtain forming tip of the water curtain forming plate located on the upper side is formed on the upper surface As shown in Fig.

Preferably, the water curtain forming plate located on the lower side is disposed upwardly inclined so that the water curtain forming tip is located on the upper side, and the remaining portion except the water curtain forming tip is closed in the frame.

It is preferable that the height in the gravity direction of the water curtain forming tip of the water curtain forming plate located on the upper side is formed to be lower than the height of the water curtain forming tip of the water curtain forming plate located on the lower side.

The water curtain forming plate may have the water curtain forming tip formed at two or more positions.

The water curtain forming plate is formed so as to be inclined downward from a water drop receiving portion that receives water falling from the upper side toward a plurality of the water curtain forming tips.

And a blade-shaped drop-out divider protruding upward from the water dropping portion.

The water curtain-forming plate may be formed so as to be inclined downward from the water-dropping portion receiving the water falling from the upper side toward the water curtain-forming tip.

In addition, the water curtain forming plate may be formed so that the water drop portion receiving the water falling from the upper side and the water curtain forming tip are parallel to each other.

And a slit forming member disposed above the water curtain forming tip and forming a slit between the water curtain forming tip and the water curtain forming tip.

The slit forming member is rotatably coupled to the frame, so that it is effective to adjust the height of the slit.

It is preferable that the water curtain forming plate is formed by passing a plurality of spray injection holes and a plurality of spray injection holes are formed through the water curtain forming plate closest to the gas inlet among the plurality of water curtain forming plates .

As described above, according to the present invention, various effects including the following can be expected. However, the present invention does not necessarily achieve the following effects.

The combustion gas passes through a plurality of water curtains disposed on the flow path so that a harmful gas such as a soluble sulfurous acid gas and a nitrite gas contained in the combustion gas is received in the water and can be removed more effectively.

In addition, compared to the method of simply spraying water, the possibility that the combustion gas contacts the water is remarkably high despite the short distance, and the height of the combustion gas processing apparatus can be shortened.

Further, by making use of the falling force caused by the gravity of water and the upward force of the combustion gas, the harmful gas in the combustion gas can be removed without using a separate driving force.

Further, by additionally providing a spray portion at a position adjacent to the gas inlet, it is possible to further increase the removal efficiency of the noxious gas.

1 is a front sectional view of a boiler combustion gas processing apparatus according to a first embodiment of the present invention;
Fig. 2 is a cross-sectional view taken along the line II-II in Fig. 1
3 is a front sectional view of the boiler combustion gas processing apparatus of the second embodiment of the present invention
Fig. 4 is a partial front sectional view of the boiler combustion gas processing apparatus of the third embodiment of the present invention
5 is a partial front sectional view of the boiler combustion gas processing apparatus of the fourth embodiment of the present invention
FIG. 6 is a partial front sectional view of the boiler combustion gas processing apparatus of the fifth embodiment of the present invention
7 to 9 are sectional views showing various modifications of the boiler combustion gas processing apparatus of the present invention

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front sectional view of a boiler combustion gas processing apparatus according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG.

1, the boiler combustion gas processing apparatus according to the first embodiment of the present invention includes a gas inlet 101 through which a combustion gas discharged from a boiler 1 flows, a gas inlet 101 through which gas is introduced through the gas inlet 101, A frame 110 including a gas outlet 102 through which the combustion gas is discharged and a gas passage 103 connecting the gas inlet 101 and the gas outlet 102; And a water curtain forming apparatus 200 for forming a water curtain 91 in the direction of the water curtain.

The boiler 1 can be used in various types of boilers. In particular, since the boiler combustion gas processing apparatus of the present invention can very effectively treat harmful gases that are water-soluble, it is possible to efficiently remove harmful gases such as sulfur dioxide It is more effective if the boiler combustion gas processing apparatus of the present invention is applied to the boiler 1 using tires or the like as a raw material.

Sulfur dioxide gas is contained in water to generate sulfuric acid, and nitrite gas is contained in water to generate nitric acid. It is preferable that the inner surface of the water curtain forming apparatus and the frame, which are portions to be in contact with water, are coated with an acid-resistant coating. As acid-resistant coatings, acid-resistant epoxy coatings, acid-resistant enamel coatings or acid-resistant ceramic coatings can be used.

The frame 110 is formed in a rectangular parallelepiped shape and has the gas inlet 101, the gas outlet 102, the water supply portion 221 and the water outlet 223 described above. A plurality of water curtain forming plates 210 are formed inside the frame 110 and zigzag gas flow channels 103 are formed by these water curtain forming plates 210.

The gas outlet 102 is formed higher than the gas inlet 101 so that the gas introduced into the gas inlet 101 can be discharged to the gas outlet 102 naturally without using any additional power. On the contrary, the water curtain 91 formed by the water curtain forming apparatus 200 is formed in the gravity direction so that water flows naturally from the upper side to the lower side by gravity and is discharged to the water discharge port 223.

The water curtain forming apparatus 200 includes a water supply section 221 for supplying water into the gas flow path 103 described above and a water curtain forming tip 211 To form a water curtain 91. The water curtain forming plate 210 is a water curtain forming plate.

The water curtain forming plate 210 is formed so as to form the gas flow path 103 by sealing the remaining portion of the water curtain forming plate 210 except the water curtain forming tip 211 with the frame 110. That is, the water curtain forming plate 210 is formed in the shape of a quadrilateral plate, and the remaining corners except for the water curtain forming tip 211 are fixed to the frame 110 to be hermetically closed to form the gas flow path 103, Guide the direction of water flow.

The water curtain forming plate 210 is formed by stacking a plurality of water curtain forming plates 210 on the upper and lower sides in the gravity direction and water falling through the water curtain forming tip 211 of the water curtain forming plate 210 located on the upper side And is disposed to fall on the upper surface of the water curtain forming plate 210 located on the lower side. That is, as shown in FIG. 1, the water curtain forming plate 210 includes a first water curtain forming plate 210a disposed on the first upper side, a second water curtain forming plate 210b, A water curtain forming plate 210c and a fourth water curtain forming plate 210d are formed. In addition, a first water curtain forming tip 211a, a second water curtain forming tip 211b, a third water curtain forming tip 211c and a fourth water curtain forming tip 211d are formed in each of them, The water falling through the water curtain forming tip 211a falls on the upper surface of the second water curtain forming plate 210b and the water falling through the second water curtain forming tip 211b flows into the third water curtain forming plate 210c And the water falling through the third water curtain forming tip 211c falls on the upper surface of the fourth water curtain forming plate 210b. By arranging in this way, the water supplied through the water supply unit 221 is passed through the plurality of water curtain forming plates 210 by gravity, so that a plurality of water curtains 91 can be formed.

Thus, by forming a plurality of water curtains in the direction transverse to the gas flow path 103 without additional power, the combustion gas passing through the gas flow path 103 passes through the plurality of water curtains 91. As a result, a harmful gas such as a soluble sulfurous acid gas and a nitrite gas contained in the combustion gas can be contained in the water and can be removed more effectively.

In addition, in the case of simply spraying water, in order to exhibit a desired degree of noxious gas component removal performance, a high-reacting furnace is required in order to increase the area where water and gas are in contact. In an embodiment of the present invention, Despite the distance, the probability that the combustion gas contacts the water is so high that the height of the combustion gas treating apparatus can be shortened.

The water curtain forming plate 210 is formed so as to be inclined downward toward the water curtain forming tip 211 from the water dropping portion 212 receiving water falling from the upper side. In this way, the water falling from the upper side flows downward without clogging.

Further, a spray portion for spraying water powder to the gas flow path 103 is formed. The sprayer injects water powder onto the gas passage (103) adjacent to the gas inlet. That is, among the plurality of water curtain forming plates 210, the water curtain forming plate 210d closest to the gas inlet 101 passes through a plurality of spraying holes 213 to form the spraying portion. In FIG. 1, a plurality of spray injection holes 213 are formed in the fourth water curtain forming plate 201d to spray water to the gas inlet 101 having the highest concentration of the noxious gas, thereby increasing the removal efficiency of the noxious gas .

As shown in FIG. 1, by forming the water curtain forming plate 210, the sectional area of the gas channel 103 is increased or decreased, and the water curtain 91 is formed at a point where the sectional area of the gas channel is reduced.

That is, the water curtain forming plate 210 forms the zigzag gas passages 103, and at the point where the water curtain 91 is formed, the point where the height (width is the same) And the cross-sectional area is increased again before and after. If the cross-sectional area of the portion where the water curtain is formed is wide, water is scattered. However, as shown in Fig. 1, water curtains are formed by using the same amount of water at the smallest area So that the absorption efficiency of the noxious gas can be increased.

3 is a front sectional view of the boiler combustion gas processing apparatus of the second embodiment of the present invention.

The boiler combustion gas processing apparatus of the second embodiment includes a slit forming member 230 disposed above the water curtain forming tip 211 and forming a slit 231 between the water curtain forming tip 211 and the water curtain forming tip 211 The second embodiment differs from the first embodiment in that the remaining components are the same.

By forming the slit 231 in this manner, it is possible to form a water curtain of a constant thickness irrespective of the flow rate flowing through the water curtain forming plate 210. Further, it is preferable that the slit forming member 230 is rotatably coupled to the frame 110 so that the height of the slit can be adjusted.

4 is a partial front sectional view of the boiler combustion gas processing apparatus of the third embodiment of the present invention.

The boiler combustion gas processing apparatus of the third embodiment differs from the first embodiment in that a water holding portion 104 is formed on the gas flow passage so that water is formed thereon. That is, the water retaining part 104 is formed so that water tied to the water retaining part 104 seals the channel 103.

In more detail, the boiler combustion gas processing apparatus of the third embodiment is arranged such that the water curtain forming tip 1211b of the water curtain forming plate 1210b positioned on the lower side is located on the upper side, And the remaining portion except for the upper portion 1211b is sealed in the frame to form the grip portion 104 as shown in FIG.

Particularly when the height in the gravity direction of the water curtain forming tip 1211a of the water curtain forming plate 1210a located on the upper side is smaller than the height of the water curtain forming tip 1211b of the water curtain forming plate 1210b located on the lower side, So that the gas flow path is formed so as to be completely closed by the water impregnated in the water retaining portion 104. [

As such, since the noxious gas is forced to pass through the water holding part 104 by the pressure, the possibility that the noxious gas component is accommodated by the water can be much increased.

5 is a partial front sectional view of the boiler combustion gas processing apparatus of the fourth embodiment of the present invention.

In the boiler combustion gas processing apparatus of the fourth embodiment, the gas flow paths 102a and 102b are branched into two or more, and the water curtain 91 is formed in each of the branched gas flow paths. More specifically, in the water curtain forming plate 2220 of the boiler combustion gas processing apparatus of the fourth embodiment, the water curtain forming tips 2211a and 2211b are formed at two or more positions. That is, both ends of the water curtain forming plate 2220 are opened to form two water curtain forming tips 2211a and 2211b, and the gas flow paths 103a and 103b are also formed along the two water curtain forming tips 2211a and 2211b Two are formed. The water curtain forming plate 2220 is formed so as to be inclined downward toward the plurality of water curtain forming tips 2211a and 2211b from the water dropping portion 2223 receiving the water falling from the upper side.

With this configuration, there is an advantage that the amount of contact of water of the combustion gas at the same height can be doubled.

However, in this case, evenly distributing the water falling on the water dropping portion 2223 to both sides may have a significant influence on the performance of removing harmful components. To this end, it is preferable to further include a blade-shaped drop-out divider 2224 projecting upward from the water dropping portion 2223.

6 is a partial front sectional view of the boiler combustion gas processing apparatus of the fifth embodiment of the present invention.

The water curtain forming plate 220 of the fifth embodiment is characterized in that the water dropping part 212 receiving the water falling from the upper side and the water curtain forming tip 221 are formed in parallel to each other.

7 to 9 show various modifications of the boiler combustion gas processing apparatus of the present invention.

7 shows that some water curtain forming plates 220a are arranged to be inclined downward, and some water curtain forming plates 220b are arranged to be parallel.

Fig. 8 shows that all the water curtain forming plates 220 are arranged so as to be inclined upward, Fig. 9 shows that all the water curtain forming plates 220a and 220b are formed in parallel, and some water curtain forming plates 220a A water curtain forming tip 221 is formed at both ends.

It should be understood that the arrangements shown in Figs. 1 to 9 are not necessarily used independently, but may be arranged in various combinations according to design specifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

1: boiler 101: gas inlet
102: gas outlet 103: gas flow path
110: Frame 91: Water curtain
200: Water curtain forming device 104:
221: water supply unit 211: water curtain forming tip
210: water curtain forming plate 212:
2224: Downflow divider 230: Slit forming member
213: Spray injection hole

Claims (23)

A frame including a gas inlet through which a combustion gas discharged from a boiler flows, a gas outlet through which the combustion gas introduced through the gas inlet is discharged, and a gas flow passage connecting the gas inlet and the gas outlet; And
A water curtain forming device for forming a water curtain in a direction across the gas flow path;
Wherein the boiler combustion gas processing apparatus comprises:
The method according to claim 1,
Wherein the gas outlet is formed higher than the gas inlet,
Wherein the water curtain is formed in the direction of gravity.
The method according to claim 1,
Sectional area of the gas flow path is increased or decreased,
Wherein the water curtain is formed at a point where the cross-sectional area of the gas flow path is reduced.
The method according to claim 1,
Wherein a plurality of the water curtains are formed.
The method according to claim 1,
Wherein the gas flow path is branched into two or more, and the water curtain is formed in each of the branched gas flow paths.
The method according to claim 1,
A spray part for spraying water powder into the gas flow path;
Further comprising: a boiler flue gas treating unit for treating the boiler combustion gas.
The method according to claim 6,
Wherein the sprayer injects water powder onto the gas flow path adjacent to the gas inlet.
The method according to claim 1,
A water outlet on which water is allowed to flow on the gas flow channel;
Further comprising: a boiler flue gas treating unit for treating the boiler combustion gas.
9. The method of claim 8,
Wherein the water retainer is formed to seal water in the water retainer to seal the flow channel.
10. The method according to any one of claims 1 to 9,
The water curtain forming apparatus includes:
A water supply unit for supplying water into the gas channel; And
A water curtain forming plate which receives water from the water supplying portion and drops through a water curtain forming tip formed at one end to form a water curtain;
Wherein the boiler combustion gas processing apparatus comprises:
11. The method of claim 10,
The water curtain-forming plate includes:
And the remaining portion except for the water curtain forming tip is sealed in the frame to form the gas flow path.
11. The method of claim 10,
The water curtain-forming plate includes:
A plurality of layers stacked vertically in the gravitational direction,
Wherein water falling through the water curtain forming tip of the water curtain forming plate located on the upper side is disposed on the upper surface of the water curtain forming plate located on the lower side.
13. The method of claim 12,
Wherein the water curtain forming plate located on the lower side is disposed with an upward slope so that the water curtain forming tip is positioned on the upper side and the remaining portion except the water curtain forming tip is sealed with the frame.
14. The method of claim 13,
Wherein the height of the water curtain forming tip of the water curtain forming plate located on the upper side is lower than the height of the water curtain forming tip of the water curtain forming plate located on the lower side.
11. The method of claim 10,
Wherein said water curtain-forming plate is formed with said water curtain-forming tip at two or more positions.
16. The method of claim 15,
Wherein the water curtain forming plate is formed so as to be inclined downward from a water drop receiving portion that receives water falling from the upper side toward a plurality of the water curtain forming tips.
17. The method of claim 16,
A blade-shaped descending divider protruding upward from the dripping portion;
Further comprising: a boiler flue gas treating unit for treating the boiler combustion gas.
11. The method of claim 10,
Wherein the water curtain-forming plate is formed so as to be inclined downward from the water-dropping portion receiving the water falling from the upper side toward the water curtain-forming tip.
11. The method of claim 10,
Wherein the water curtain forming plate is formed such that the water dropping portion receiving the water falling from the upper side and the water curtain forming tip are parallel to each other.
11. The method of claim 10,
A slit forming member disposed above the water curtain forming tip and forming a slit between the water curtain forming tip and the water curtain forming tip;
Further comprising: a boiler flue gas treating unit for treating the boiler combustion gas.
21. The method of claim 20,
Wherein the slit forming member is rotatably coupled to the frame to adjust the height of the slit.
11. The method of claim 10,
Wherein the water curtain-forming plate is formed with a plurality of spray holes penetrating therethrough.
13. The method of claim 12,
Wherein a plurality of spray injection holes are formed in the water curtain forming plate closest to the gas inlet among the plurality of water curtain forming plates.

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