KR102234624B1 - Spray nozzle for scrubber for waste gas cleaning - Google Patents

Abstract

The present invention relates to a spiral type spray nozzle mounted on an absorption tower for waste gas purification or a scrubber, and the spray angle of the spiral type spray nozzle N is 120°, and the spiral type nozzle tip 2 In the upper surface (3) of the spiral side (P) of, grooves (t) are continuously formed at regular intervals from the center of the nozzle to the outer end, and 3 to 5 grooves are formed on the inner wall surface of the pipe-shaped nozzle body (1). It is a spray nozzle for a scrubber for cleaning waste gas with a spiral groove (f) formed in the longitudinal direction.
The spiral spray nozzle of the present invention delays deposition of foreign substances and improves clogging, so that the internal cleaning cycle of the scrubber including the nozzle and gas-liquid contact means is lengthened, thereby improving the performance of the scrubber and reducing other required expenses It has the advantage of letting you do it.

Description

Spray nozzle for scrubber for waste gas cleaning

The present invention relates to a spray nozzle for a scrubber for cleaning waste gas, and specifically relates to a spiral spray nozzle mounted on a scrubber for absorption and separation of harmful gas from waste gas containing harmful components.

In general, a scrubber device is equipped with a gas-liquid connection means such as a filler and a cleaning agent (absorbent) injection device to absorb and separate harmful gases from the waste gas containing harmful components. A cleaning agent sprayed from the injection nozzle absorbs harmful components and separates harmful components contained in the waste gas while cleaning the filler or gas-liquid contact means.

Several types of spray nozzles are used for the spray nozzles used in the scrubber, but in the packed tower or scrubber, the sprayed droplets are uniformly distributed, and the size of the spray particle diameter is not particularly affected, so most of the direct pressure of the liquid Pressure type nozzles such as a full cone type nozzle, a hollow cone type nozzle, and a spiral type nozzle that are sprayed by are adopted.

For example, in connection with the spray nozzle for scrubber, in the hybrid nozzle connected to a pipe for transferring fire extinguishing water having a constant water pressure in Patent Document 1, for example; A nozzle body having a flow path tangentially disposed in the vortex receiving chamber to induce a vortex flow in order to receive the fire extinguishing water in the vortex receiving chamber; The collision position of the droplets that are airtightly coupled to the lower part of the vortex receiving chamber and scattered at a constant injection angle through the vortex accelerating part of the upper-glow narrow-shaped shape for increasing the angular velocity of the vortex and the injection port under the vortex accelerating part. A hybrid nozzle is disclosed, characterized in that it includes an injection unit having a spiral-shaped droplet collision unit that is formed in and further enlarges the injection angle of the fire extinguishing water, and Patent Document 2 discloses a water supply pipe 62 through which the water supply moves in the central part. And an electrode terminal 68 that is supplied with power from the power supply unit 90 so as to have a relative polarity with respect to the foreign matter particles, on an outer surface of one side of the water supply pipe 62, and a side surface of the water supply pipe 62 In the horizontal direction, the water supply passage 64 through which the water supply moves and the air passage 65 through which compressed air supplied by the air compressor 96 can be injected toward the end of the water supply passage 64 are disposed in a horizontal direction. Disclosed is a charged droplet spraying device for a scrubber, characterized in that the droplet spraying portion 67 disposed to face the spraying hole 69a is provided in the same horizontal direction as the moving direction of the foreign matter particles.

In addition, in Patent Document 3, a central passage through which water is supplied from one side and discharged to the other side is formed in a longitudinal direction, and an inclined curved surface 11 is formed on the outside in the form of a trumpet whose radius increases along the longitudinal direction. (One); The second channel 24 is coupled to one side of the body 1 along the longitudinal direction of the body, and is formed along the outer periphery of the second channel 24 and the second channel 24 communicating with the central channel of the body 1 A hollow cone guide 2 in which 22 is formed; A full cone guide (3) coupled to the body (1) and having a second funnel-shaped opening (31) formed thereon for receiving water discharged from the body (1) and then discharging it to the outside; Doedoe coupled to the inside of the full cone guide 3, a plurality of spiral channels 41 formed on the outer surface of the spiral vane 4 so that the water discharged from the body 1 is scattered while forming a vortex. Disclosed is a water screen nozzle characterized by.

The inventor of the present invention confirmed that the cleaning effect of the gas-liquid contact means mounted on the scrubber and the purification effect of waste gas improved by forming the spiral injection nozzle in a structure particularly suitable for the scrubber to prevent the nozzle clogging phenomenon, and completed the present invention. .

Patent Document 1: Korean Registered Patent Publication No. 10-0457646 Patent Document 2: Korean Utility Model Publication Registration No. 20-0379320 Patent Document 3: Korean Registered Patent Publication No. 10-1058419

The problem to be solved in the present invention relates to the provision of a spray nozzle mounted on a scrubber for absorption and separation of harmful gases from waste gas, and more specifically, mounted on a scrubber for absorption and separation of harmful gases from waste gases containing harmful components. It is an object of the present invention to provide a spiral type spray nozzle for a scrubber that improves the purification efficiency of waste gas by preventing clogging of the spray nozzle.

As a solution to the problem according to the present invention, the spray nozzle (N) for a scrubber is a spiral spray nozzle consisting of a nozzle body (1) of a circular pipe and a spiral nozzle tip (2) in the shape of a cone, The spray angle of the spray nozzle is 120°, and the groove (t) is continuous at regular intervals from the center of the nozzle to the outer end of the upper surface (3) of the spiral side (P) of the spiral nozzle tip (2). The pipe-shaped nozzle body (1) has 3 to 5 spiral grooves (f) formed at equal intervals in the longitudinal direction on the inner wall surface of the pipe-shaped nozzle body (1).

An embodiment of the spray nozzle (N) for a scrubber according to the present invention is in a spiral spray nozzle composed of a nozzle body (1) of a circular pipe and a spiral nozzle tip (2), the spray angle of the spiral spray nozzle ( spray angle) is 120°, and grooves (t) from the center of the nozzle to the outer ends of the upper and lower surfaces (3) or upper and lower surfaces (3, 4) of the spiral side (P) of the spiral nozzle tip (2) These are continuously formed at regular intervals, and 3 to 5 spiral grooves f are formed at equal intervals in the longitudinal direction on the inner wall surface of the pipe-shaped nozzle body 1.

Another embodiment of the spray nozzle (N) for a scrubber according to the present invention is the inner diameter (D) of the nozzle body (1) of the circular pipe, the length (L) of the spiral nozzle tip (2), and the spacing of the spiral bone ( In the correlation of W), the spiral side (P) is the center of the nozzle body (1) so that L/D is 2.5±0.3, W/L is 0.2±0.05, and the spray angle is 120°. It consists of a cone-shaped structure whose diameter gradually decreases while forming a concentric circle with a spiral based on S).

The spray nozzle for a scrubber of the present invention is a cleaning process even when the cleaning agent is circulated for a long time by a structure according to the ratio of the spiral groove formed on the inner wall of the nozzle body, the groove formed on the spiral side of the spiral nozzle tip, and the pitch gap/bone gap. The accumulation of foreign substances such as neutral flames and slime generated in the nozzle tip is reduced, thereby improving the clogging of the nozzle tip.

In addition, as the clogging of the nozzle tip is improved, the purification effect of the waste gas is improved, and the scrubber can be operated for a long time, thus reducing the cost required for operation and maintenance of the waste gas scrubber.

1 is a view schematically showing a scrubber for purifying waste gas equipped with an injection nozzle
2 is a video object in which a clogging phenomenon of the scrubber spray nozzle used for a certain period occurs
3A is a view showing an embodiment of a spiral nozzle according to the present invention
Figure 3 (b) is a view showing a spiral groove in the shape of a steel wire formed on the inner wall of the nozzle body of the spiral nozzle according to the present invention
4 is a view showing another embodiment of the spiral nozzle according to the present invention
5 is a view showing the length (L) of the nozzle tip (2) of the spiral nozzle according to the present invention and the spacing (W) of the spiral bone

Hereinafter, the present invention will be described in more detail through specific contents and examples for the implementation of the present invention, but the present invention is not limited by the following description.

1 attached to the present invention is a schematic view showing a scrubber for purifying waste gas containing harmful components. Referring to FIG. 1, the process of purifying waste gas is briefly described.

When the waste gas (G) containing harmful components flows into the scrubber, the waste gas (G) contacts the cleaning liquid sprayed into the scrubber by the cleaning liquid pipe and the spray nozzle (N) while the waste gas passes through the gas-liquid contact means. The waste gas that is absorbed and purified is discharged to the outside of the scrubber.

The cleaning liquid supplied into the scrubber is sprayed to the gas-liquid contact means through the spray nozzle (N). It consists of cleaning while cycling for a period of time.

As shown in Fig. 2, the cleaning liquid that is collected in the cleaning liquid storage tank and circulated for a certain period of time increases the concentration of foreign substances such as salts and slimes due to harmful components during long-term recycling, and the cleaning liquid spraying process of the spray nozzle In the event of clogging of the injection nozzle, the absorption and cleaning functions are deteriorated, and the waste gas purification function is also deteriorated. Eventually, the injection nozzle must be replaced or the gas-liquid contact means must be separated and cleaned. Therefore, the clogging of the injection nozzle is caused by the operation of the scrubber and It appears to be an important problem in maintenance.

Since the spray nozzle mounted on the absorption tower for purification of waste gas such as the scrubber has little effect on the particle diameter of the spray droplet and is applied to uniform spraying of the cleaning liquid, a pressure spray nozzle that is dispersed by the direct pressure of the cleaning liquid is mainly used, and the spiral spray A nozzle (Spiral type spray nozzle) is a type of pressure spray nozzle.

Figure 3 (a) is a view showing an embodiment of the spiral nozzle according to the present invention, Figure 3 (b) is a steel wire-shaped spiral groove formed inside the nozzle body of the spiral nozzle according to the present invention. As a diagram shown, a detailed description of the spiral spray nozzle (N) according to the present invention with reference to (a) and (b) of FIG. 3,

As shown in Figure 3 (a), the spiral spray nozzle (N) of the present invention is composed of a circular pipe-shaped nozzle body (1) and a spiral nozzle tip (2) having a constant inner diameter (D). , In the upper surface (3) of the spiral side (P) of the spiral nozzle tip (2), grooves (t) are continuously formed at regular intervals from the center of the nozzle to the outer end, and the nozzle body part 1 of the circular pipe shape ), 3 to 5 spiral grooves (f) are formed at equal intervals in the longitudinal direction.

The spiral type nozzle tip 2 according to the present invention has a spiral side P that forms a concentric circle with a spiral based on the center S of the nozzle body 1 so that the spray angle is formed at 120°. It consists of a structure in the shape of a cone whose diameter gradually decreases, and has a structure in which a groove (t) is formed in the upper surface (3) of the spiral side (P) of the spiral nozzle tip (2).

The groove (t) formed on the upper surface (3) of the spiral side (P) is formed in a V-shape, or the V-shape is a tapered shape gradually narrowing in the direction of the nozzle center from the outer end of the spiral side (P). It is formed as, the depth of the groove (t) is preferably 1 ~ 1.5mm.

The groove (t) formed on the upper surface (3) of the spiral side (P) is caused by the groove (t) when the cleaning liquid flows out of the nozzle body (1) and collides with the spiral side (P) and is dispersed. It increases the frictional strength and induces the generation of bubbles, preventing or delaying the accumulation of foreign substances such as slimes in the spiral edge P, and at the same time maintaining a constant and stable spraying direction of the cleaning solution. It also has functions.

As shown in (a) of Figure 3, the injection nozzle of the present invention has 3 to 5 spiral grooves (f) formed at equal intervals in the longitudinal direction on the inner wall of the nozzle body 1 in the shape of a circular pipe. .

The spiral groove (f) stably induces the flow of the rotating washing liquid by a function such as a steel wire formed inside the barrel, and when the washing water flows out of the nozzle body 1, the spiral It shows the function of spraying evenly when it collides with the side (P) and is dispersed, and it does not have a special effect on the flow of the cleaning solution when there are 3 or less spiral grooves (f), and when there are more than 5 it affects the spray angle of the cleaning solution It is not desirable.

The shape of the spiral groove (f) may be a convex shape or a V shape, and the depth is preferably formed within a range that does not affect the strength of the pipe forming the nozzle body (1). In addition, the width of the spiral groove (f) is preferably formed to be 2 ~ 3mm, the spiral direction of the spiral groove (f) is formed in the same direction as the spiral direction of the spiral side (P).

Figure 4 is a view showing another embodiment of the groove (t) formed in the spiral side (P) of the spiral nozzle according to the invention, as shown in the drawing, the groove (t) is the upper portion of the spiral side (P) It may be formed simultaneously on the lower surface 4 together with the surface 3, or may be formed only on the lower surface 4 of the spiral side P, and is formed continuously at regular intervals from the center of the nozzle to the outer end.

And Figure 5 is a view for explaining the relationship between the length (L) of the nozzle tip (2) of the spiral nozzle according to the present invention and the spacing (W) of the spiral bone according to the present invention with reference to Figure 5 Specifically explaining the relationship between the length (L) of the nozzle tip (2) of the type nozzle and the spacing (W) of the spiral bone,

The spray angle of the spiral nozzle N is closely related to the spiral angle of the spiral side P, and at the same time, the inner diameter D of the nozzle body 1 and the spiral nozzle tip 2 The length (L) of the fluid (cleaning liquid) is an important condition that affects the spraying power and cleaning power in relation to the hydraulic pressure of the fluid (cleaning liquid), and the larger the L/D value in the flow rate or hydraulic pressure under the same condition, the greater the spraying power of the cleaning liquid and the end of the nozzle tip. As the force reached is weakened, not only the cleaning efficiency of the gas-liquid contact means (filter body) is lowered, but also the accumulation of foreign substances in the spiral edge P is increased.

In addition, the length (L) of the nozzle tip (2) and the spacing (W) of the spiral valley are closely related to the number of turns of the spiral side (P) and the accumulation of foreign substances on the spiral side (P). The larger the spiral side (P), the longer the accumulation of foreign substances may be delayed, but the number of turns of the spiral side (P) is small, which causes the problem that the cleaning power cannot be compared to the inflow amount of the cleaning solution, and the smaller the W/L value, the more the spiral side is Since foreign matter is easily traced on the side (P), the cleaning cycle of the nozzle is shortened, causing a problem in efficiently operating the scrubber.

The spiral type nozzle (N) according to the present invention has an inner diameter (D) of the nozzle body (1) and a length (L) of the spiral type nozzle tip (2) so that the spray angle is 120°. Set the ratio (L/D) to 2.5±0.3, and set the ratio (W/L) of the length (L) of the spiral nozzle tip (2) to the spacing (W) of the helix bone to be 0.2±0.05. The side (P) is formed in a concentric circle in a helical shape based on the center (S) of the nozzle body (1), and is formed in a cone-shaped structure that gradually decreases in diameter, so that the flow rate of the washing liquid is appropriately supplied. It consists of forming the spacing (W) of the spiral valleys to prevent or significantly reduce the clogging of the nozzle while the spiral side (P) is based on the center (S) of the nozzle body (1). It is preferable to form the number of turns in a spiral to be three times.

The material of the spiral nozzle N according to the present invention may be selected from polypropylene (PP), polyvinyl chloride (PVC), stainless steel (SUS), and the like, and the nozzle body 1 and the spiral nozzle The tip 2 may be integrally manufactured, and the nozzle body 1 may be provided with a screw coupling portion capable of being coupled to the cleaning liquid supply pipe.

The spiral nozzle (N) according to the present invention is capable of manufacturing the nozzle body of various diameters under the condition of an L/D value of 2.5±0.3 with a spray angle of 120°, so the supply flow rate of the cleaning liquid or the cleaning liquid Regardless of the inflow pressure of the scrubber and the processing capacity of the scrubber for waste gas purification, it is equipped with a cleaning liquid injection nozzle to delay or prevent clogging of the nozzle, thereby improving the waste gas purification effect or performance of the scrubber.

Hereinafter, through examples and test examples, the spiral type nozzle N according to the present invention will be described in more detail.

<Examples and Test Examples>

Spiral nozzle (N) of the present invention in which a tapered groove (t) is formed on the spiral side (P) of the spiral nozzle (N), and a spiral groove (f) is formed on the inner wall of the nozzle body (1) Using the prototype (polypropylene injection molded product) produced as Example 1 and Example 2, the spiral nozzle (Example 1 and Example 2) of the present invention and the groove (t) and the spiral groove (f) were not formed. Using the conventional spiral type nozzle (comparative example), respectively, as a cleaning liquid spraying nozzle of the scrubber, comparing the internal cleaning cycle of the scrubber including the nozzle and gas-liquid contact means, the performance of the nozzle was tested, and the results are shown in [Table 1] below. Indicated.

division diameter
(D)㎜ Tip length (L)㎜ L/D W/L Spray angle
(spray angle) Flow rate according to hydraulic pressure (bar) (ℓ/min) Scrubber
Washing cycle 0.7 One 1.5 2 Example 1 20.6 50 2.43 0.2 120° 28.4 34.7 41.0 49.1 Once/15 months Example 2 29 73 2.51 0.2 120° 38.9 47.6 58.7 83.3 Once/13 months Comparative example 20.2 42 2.07 0.2 120° 28.1 34.2 40.8 48.9 Once/08 month

As shown in [Table 1], as a result of using the spray nozzle for a scrubber for a certain period of time under the same conditions, the spiral nozzle N according to the present invention includes the nozzle and the gas-liquid contact means compared to the comparative example, and the internal cleaning cycle of the scrubber Since it can be confirmed that is longer, it can be predicted that the deposition of foreign substances and the like is delayed in the spiral nozzle N according to the present invention, and the clogging phenomenon is also improved.

N: spiral spray nozzle of the present invention, D: inner diameter of the nozzle body, L: length of the spiral nozzle tip, P: spiral side, W: bone spacing, f: spiral groove, t: groove
1: nozzle body, 2: spiral nozzle tip, 3, 4; The upper and lower surfaces of the spiral side

Claims (6)

delete delete delete delete In the spiral type spray nozzle consisting of a nozzle body part 1 of a circular pipe and a spiral type nozzle tip 2 in a cone shape,
The spray angle of the spiral spray nozzle (N) is 120°,
The circular pipe-shaped nozzle body (1) has 3 to 5 spiral grooves (f) formed at equal intervals on its inner wall in the longitudinal direction,
The spiral type nozzle tip (2) has a groove (t) continuously formed at regular intervals from the center of the nozzle to the outer end of the upper surface (3) or the upper surface and the lower surface (3, 4) of the spiral side (P), The groove (t) is a V-shaped from the center of the nozzle of the spiral side (P) of the spiral nozzle tip (2) to the outer end of the tapered shape and gradually narrows in width, and has a depth of 1 to 1.5 mm,
In addition, the ratio (L/D) of the inner diameter (D) of the nozzle body (1) and the length (L) of the spiral nozzle tip (2) is 2.5±0.3, and the distance (W) between the length (L) and the spiral bone (W ) Ratio (W/L) is 0.2±0.05, and the number of times the spiral side (P) turns in a spiral based on the center (S) of the nozzle body (1) is 3 times. Spray nozzle for scrubber. A scrubber for waste gas purification, characterized in that the spray nozzle for scrubber for cleaning waste gas according to claim 5 is mounted as a cleaning liquid spray nozzle.

Images