KR102260106B1 - Wet Type Scrubber - Google Patents

Abstract

The present invention provides a wet type scrubber installed to purify exhaust gas. The wet type scrubber includes a rotation induction blade assembly (210, 211, 212, 213) to which a plurality of inclined blades are fixed inside a main body (100), and which is inclined, a plurality of blades having the same inclination angle and blade width at a location at a certain distance from the central axis and fixed radially symmetrically about the central axis of the rotation guide blade assembly (210, 211, 212, 213), a rotating injection nozzle (242) or a vertical injection nozzle (243) installed on the rotation guide blade assembly (210, 211, 212, 213), a gas inlet path (250) installed on one side of the lower part of the main body (100) and having an inlet injection nozzle (241) installed therein, a first perforated plate (231) installed on the lower part of the main body (100), and a first overlapping mesh network (221) installed on the first perforated plate (231) from the lower portion of the main body (100).

Description

Wet Scrubber {Wet Type Scrubber}

The present invention relates to a wet scrubber installed to purify exhaust gas generated in industrial facilities or ships. In more detail, the present invention dramatically increases dust collection efficiency by increasing gas-liquid contact opportunities without using fillers commonly used in wet scrubbers, and reduces differential pressure to improve energy use efficiency and to have a compact structure. It consists of a configuration including a rotation guide wing assembly, a perforated plate and an overlapping mesh network in which a plurality of inclined and perforated blades are fixed.

Registered Patent No. 10-0745810 discloses a cleaning dust collector having a body having a venturi shape with drain nozzles formed therein, a gas inlet pipe having a plurality of orifices, a collision plate for causing the cleaning liquid to collide and scattering into droplets, and a gas-liquid separation plate. is proposing Although the above proposal has the effect of maintaining the dust collection performance and reducing the maintenance cost even when used for a long time, there are problems in that the structure is complicated and the dust collection efficiency is not very high.

Registered Patent No. 10-1688622 proposes a 'scrubber with a filter consisting of a mesh network' that sprays water to a mesh network constituting a filter in a housing through which polluted gas flows to form a liquid film and remove polluting gas, have. The above proposal does not use a filler, so the equipment can be miniaturized and maintenance is easy. However, the mesh network constituting the filter increases the differential pressure, thereby reducing the energy use efficiency and the dust collection efficiency is not so high.

Registered Patent No. 10-0745810 (cleaning dust collector) Registered Patent No. 10-1688622 (Scrubber with filter made of mesh)

An object of the present invention is to provide a configuration of a wet scrubber that has high dust collection efficiency and energy use efficiency and is easy to maintain in order to purify gas containing pollutants such as exhaust gas generated from ships or industrial facilities.

An object of the present invention is to provide a wet scrubber with high dust collection efficiency and high energy use efficiency while increasing the ease of maintenance by not using a filler.

More specifically, it aims to dramatically increase the gas-liquid contact effect without increasing the differential pressure by installing the rotary guide blade assembly.

In addition, the purpose is to increase the gas-liquid contact effect by the structure in which the rotary guide blade assembly, the first overlapping mesh network and the first perforated plate are installed, and to dramatically increase the dust collection efficiency.

However, the object of the present invention is not limited to the above-mentioned purpose, and although not mentioned, the following means or other objects according to the specific configuration of the embodiment can be clearly understood by those skilled in the art from the description. will be.

The wet scrubber according to the present invention includes a rotary guide wing assembly in which a plurality of inclined and perforated blades are fixed inside the body, wherein the rotary guide blade assembly is inclined and has the same inclination angle and blade width at a certain distance from the central axis. A plurality of blades are fixed radially symmetrically about the central axis of the rotary induction blade assembly, and a rotary injection nozzle or a vertical injection nozzle or a rotary injection nozzle and a vertical injection nozzle installed on the rotation induction blade assembly are included. do.

In addition, the wet scrubber of the present invention is installed on one side of the lower body of the main body and includes a gas inlet with an inlet injection nozzle installed therein, a first perforated plate installed on the lower part of the main body, and a first overlapping mesh network installed on the upper part of the first perforated plate from the lower part of the main body. characterized in that

In addition, the present invention may further include a second perforated plate and a second overlapping mesh on the upper body.

In addition, in the first overlapping mesh of the present invention, the thickness of the wire is 3 to 6 mm, and it is preferable that the spacing of the wire is 25 to 60 mm.

In addition, the first overlapping mesh network is a triple overlapping structure, and is composed of three mesh networks, and the size of the square forming the network of the mesh networks is different from each other, or the mesh shape is a square shape and a rhombic shape. The distance between the mesh and manganese is preferably 25 to 50 mm.

In addition, the gas inlet path is formed in a venturi tubular structure at the installation position of the inlet injection nozzle, the first perforated plate has an opening ratio of 65 to 75%, and the orbiting injection nozzle is installed in plurality on the circumferential surface of the main body and It can be installed in a straight line passing through the center point and in a 30-40° inclined direction.

The present invention does not use a filler, so the maintenance cycle can be lengthened, and the second perforated plate, the first and second overlapping mesh networks, the rotary guide blade assembly and the demist can be easily replaced by setting the replacement time. It can save cost and time.

The present invention can purify 98% or more of water-soluble contaminants including sulfur and sulfides by increasing the chance of gas-liquid contact even without the use of fillers, thereby remarkably increasing the dust collection efficiency, and poorly soluble contaminants, which are contaminants that are not soluble in water. Substances can also be purified up to 70%. Nevertheless, the differential pressure by the configuration of the wet scrubber of the present invention is only 50 to 150 mmAq, thereby increasing the efficiency of energy use.

1 is a view showing the structure of a wet scrubber according to an embodiment of the present invention.
FIG. 2A is a view showing a cross section along line AA of FIG. 1 , and FIG. 2B is a view showing a cross section of another embodiment.
3 is a view showing a state in which the orbiting injection nozzles are installed according to an embodiment of the present invention.
Figure 4a is a view showing a shape seen from above and a side view of the rotation guide wing assembly according to an embodiment of the present invention, and Figures 4b, 4c and 4d are views showing other embodiments.
Figure 5a is a view showing the perforated form of the rotary guide wing assembly of the "D" portion of Figure 4a, Figures 5b, 5c are views showing other embodiments.
6 is a view showing the shape of the rotation guide blade assembly according to an embodiment of the present invention.
7 is a view showing the shape of the first perforated plate according to an embodiment of the present invention.
8 is a view showing a shape of a second perforated plate according to an embodiment of the present invention.
Figure 9a is a view showing a top view of the first and second overlapping mesh network according to an embodiment, Figure 9b is a view showing the shape seen from the side.
10 is a view showing an overlapping cross-section of the first and second overlapping mesh networks.
11 is a view showing a state in which the inlet injection nozzle is installed in the venturi tube.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It will be described in detail focusing on the parts necessary to understand the operation and operation according to the present invention. While describing the embodiments of the present invention, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention without obscuring the gist of the present invention by omitting unnecessary description. In addition, in describing the components of the present invention, different reference numerals may be given to components of the same name according to the drawings, and the same reference numerals may be given even though they are different drawings. However, even in such a case, it does not mean that the corresponding components have different functions depending on the embodiment or that they have the same function in different embodiments, and the function of each component depends on the corresponding embodiment. It should be judged based on the description of each component in

In addition, the technical terms used in this specification should be interpreted as meanings generally understood by those of ordinary skill in the art to which the present invention belongs, unless otherwise defined in this specification, and excessively inclusive It should not be construed as meaning or in an excessively reduced meaning.

Also, as used herein, the singular expression includes the plural expression unless the context dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various elements or several steps described in the specification, some of which elements or some steps are It should be construed that it may not include, or may further include additional components or steps.

Although embodiments of the present invention have been described with reference to the above, those skilled in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential characteristics thereof.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention described in the above detailed description is indicated by the following claims, meaning and All changes or modifications derived from the scope and its equivalents should be construed as being included in the scope of the present invention.

In the wet scrubber 100 of the present invention, as shown in FIG. 1 , a gas, which is a gas containing contaminants, is introduced through a gas inlet path 250 vertically connected to the body 100 in one lower portion of the body 100 . . The gas is mostly in a high temperature state, so it is preferable to cool it to 60° C. or less through a heat exchanger or water injection at the inlet and then cool the gas containing these pollutants to prevent the generation of toxic substances such as dioxins. can do.

The gas introduced into the gas inlet 250 from the gas inlet 290 collides with droplets formed by spraying water from the inlet spray nozzle 241 installed in the venturi-shaped flow path formed at a predetermined position of the gas inlet 250 . Dust and contaminants are removed first. A droplet containing dust or contaminants is the end of the gas inlet 250 and is formed as wastewater in the sieve 255 installed at the position before entering the main body 100 , and the wastewater is discharged from the waste outlet 270 .

The gas that has passed through the filter mesh 255 allows the gas to be dispersed in various directions at the inlet distribution plate installed just before entering the body, and the inlet distribution plate is generally designed appropriately according to the gas flow rate.

11 shows a structure in which the inlet injection nozzle 241 is disposed in the gas inlet 250 having a venturi shape. The gas inlet 250 is preferably a venturi-shaped structure, but it is also possible to adopt a simple cylindrical structure having a constant diameter according to installation conditions.

The gas from which dust and contaminants are primarily removed rises while passing through the inclined first perforated network 231, the first overlapping mesh network 221, and the rotary guide blade assembly 210, 211, 212, 213, and the rotary guide blade The assembly (210, 211, 212, 213) rises while rotating in a swirling flow. The rising gas is sprayed from the vertical injection nozzle 243 and the orbiting injection nozzle 242 and comes into contact with the falling water stream and droplets, so that the gas from which dust or pollutant dust and pollutants are primarily removed is an inclined first perforation network 231 , the first overlapping mesh network 221, while passing through the rotary guide wing assembly (210, 211, 212, 213) and rises while rotating in the rotational flow in the rotary guide wing assembly (210, 211, 212, 213). The rising gas is sprayed from the vertical injection nozzle 243 and the orbiting injection nozzle 242 and comes into contact with the falling water stream and droplets, so that dust or contaminants are removed secondary.
Rotational induction wing assembly (210, 211, 212, 213) is as shown in Figure 1, the orbiting injection nozzle 242 or vertical injection nozzle 243 in the body 100 inside the lower portion spaced a certain distance from the installed position. It is installed in the position, and is fixed in close contact with the inner wall of the body 100 without a gap as shown in FIGS. 4A, 4B, 4C, 4D and 6 .

The gas entering the main body 100 comes into gas-liquid contact with the droplet descending from the upper part in the first perforated plate 231 inclined first as it rises. It is preferable that the first perforated plate 231 has an opening ratio of 65 to 75% so that the flow of the rising gas can be made stably and uniformly. Here, the droplets containing dust and contaminants fall from the first perforated plate 231 through the perforations or move to the lower part of one side of the inclined first perforated plate 231 to form wastewater and are discharged to the wastewater outlet 270 .

The gas passing through the first perforated plate 231 is in gas-liquid contact in the first overlapping mesh network 221 . As for the first overlapping mesh network 221, it is appropriate that the thickness of the wire forming the mesh network is 3 to 6 mm in diameter, and the interval between the wires to form the square shape of the mesh network is tested to be appropriate in 25 to 60 mm. . If the wire spacing was less than 25 mm, the differential pressure increased and the blowing load increased. If the wire spacing was more than 60 mm, the effect of gas-liquid contact was insignificant.

It is preferable that the first overlapping mesh network 221 has a triple overlapping structure. As shown in FIGS. 9A, 9B, and 10, the overlapping mesh networks are preferably made of different wire spacings, and the overlapping mesh networks may overlap a square mesh network and a rhombic mesh network. It is appropriate that the distance between overlapping meshes is 25-50 mm.

In the first overlapping mesh network 231, oily particles may be aggregated by inertial collision, and gas-liquid contact may be increased to increase dust collection efficiency and sulfur removal efficiency.

The gas that has passed through the first overlapping mesh network 221 is rotated in the rotary guide wing assemblies 210, 211, 212, and 213 in which the perforations are formed and rises as turbulence is formed. The rotation guide blade assembly (210, 211, 212, 213) is inclined as shown in Figs. 4a and 4c, and a plurality of blades having the same inclination angle and the same blade width at a location at a certain distance from the central axis are radially symmetrical about the central axis. The wing fixing plate to which the inclined blades are fixed as shown in FIGS. 4b and 4d is installed symmetrically about the central axis together with other wing fixing plates having the same shape.

The rotation guide blade assembly (210, 211, 212, 213) is fixed by matching the central axis of the rotation guide blade assembly (210, 211, 212, 213) to the central axis position of the main body 100, but around the central axis It has a structure that can blow air, assuming that it is rotated. The rotary guide blade assembly (210, 211, 212, 213) has a structure in which the central axis is fixed and the inclined blades cannot rotate, so that the gas rises and passes through the rotary guide blade assembly (210, 211, 212, 213). As it rotates, it forms a swirling flow. As shown in Figures 4a, 4b, 4c, 4d, depending on the shape of the body (100, 101) or manufacturing conditions, it is possible to manufacture and install various types of rotary induction blade assemblies (210, 211, 212, 213).

In addition, as shown in Fig. 6, the rotary guide blade assembly (210, 211, 212, 213) has perforations formed at regular intervals, and these perforations can be manufactured in various shapes as shown in Figs. 5a, 5b, 5c. have.

The rotary guide blade assembly (210, 211, 212, 213) not only increases the gas-liquid contact by forming a tornado, but also water or droplets are emitted from the perforations of the rotary guide blade assembly (210, 211, 212, 213) to be atomized or It can be further atomized and can be widely dispersed to obtain the effect of increasing gas-liquid contact.

A vertical injection nozzle 243 and a rotating injection nozzle 242 are installed on the upper portion of the rotary induction wing assembly 231 to spray water and to spray water and droplets. The vertical injection nozzle 243 sprays water in the vertical direction, and the water stream descending in the vertical direction may cause the rotating gas to form a turbulent flow by a curtain action, that is, a gas flow blocking action. As shown in FIG. 3, a plurality of orbiting injection nozzles 242 are installed on the circumferential surface of the main body 100 and are installed in a straight line passing through the center point of the main body 100 and in a direction inclined by 30 to 40 ° to rotate the gas. increase

By allowing the gas that has passed through the rotary induction wing assembly (210, 211, 212, 213) to rise while passing through the second perforated plate 232 and the second overlapping mesh network 222 installed on the vertical injection nozzle 243, the gas-liquid By further increasing the contact opportunity, the dust collection efficiency can be further increased. The second perforated plate 232 is manufactured to have the same shape as that of the first perforated plate 231 , but the first perforated plate 231 is installed obliquely, whereas the second perforated plate 232 is installed horizontally, and the second overlapping mesh The network 222 has the same shape and installation form as the shape and installation form of the first overlapping mesh network 221 .

Moisture is removed while passing through the demist 260 before the gas in the upper part of the body 100 is discharged to the outside, and the gas that has passed through the demist becomes a purified gas and is discharged into the atmosphere through the gas outlet 280 .

As shown in FIG. 1, the first and second overlapping mesh networks 221 and 222 installed on the main body 100, the rotation guide wing assemblies 210, 211, 212, 213, the second perforated plate 232 and the demist ( 260) has a structure that can be pulled out from the position indicated by "F" of the main body 100 and put back in, so the present invention provides a structure that is easy to maintain.

Although embodiments of the present invention have been described with reference to the above, those skilled in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential characteristics thereof.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention described in the above detailed description is indicated by the following claims, meaning and All changes or modifications derived from the scope and its equivalents should be construed as being included in the scope of the present invention.

200: wet scrubber 210, 211, 212, 213: rotary guide vane assembly
221: first overlapping mesh network 222: second overlapping mesh network
231: first perforated plate 232: second perforated plate
241: inlet injection nozzle 242: swirling injection nozzle
243: vertical injection nozzle 250: gas inlet
255: geulmang 260: demist
270: waste outlet 280: gas outlet
290: gas inlet 284: thermometer
285: pressure gauge 100, 101: body

Claims (12)

In the wet scrubber,
It is installed inside the body 100 and includes a plurality of inclined blades having a plurality of perforations fixed thereto, including a rotation guide blade assembly (210, 211, 212, 213), wherein the rotation guide blade assembly (210, 211, 212, 213) is inclined and a plurality of blades having the same inclination angle and the same blade width at a certain distance from the central axis are radially symmetrically fixed about the central axis of the rotation guide blade assembly (210, 211, 212, 213),
The rotary induction wing assembly (210, 211, 212, 213) is installed on the upper part of the orbiting injection nozzle 242 or the vertical injection nozzle 243 or the orbiting injection nozzle 242 and the vertical injection nozzle 243 is included,
The rotary induction blade assembly (210, 211, 212, 213) is a rotating injection nozzle 242 or a vertical injection nozzle 243 or a rotating injection nozzle 242 and a vertical injection nozzle 243 are installed inside the main body 100. A wet scrubber, characterized in that it is installed at a lower position spaced a certain distance from the position to be, and is fixed in close contact with the inner wall of the main body 100 without a gap. According to claim 1,
a gas inlet 250 installed on one side of the lower body 100 and having an inlet injection nozzle 241 installed therein;
a first perforated plate 231 installed on the lower part of the body 100; and
A wet scrubber, characterized in that it further includes a first overlapping mesh network 221 installed on the lower part of the body. 3. The method of claim 2,
Wet scrubber, characterized in that the second perforated plate 232 and the second overlapping mesh network 222 are further included on the main body 100 . 3. The method of claim 2,
The first overlapping mesh network 221 is a wet scrubber, characterized in that the thickness of the wire is 3 ~ 6 mm, the spacing of the wire is 25 ~ 60 mm. 3. The method of claim 2,
The first overlapping mesh network 221 is a wet scrubber, characterized in that it is composed of three mesh networks as a triple overlapping structure. 6. The method of claim 5,
The first overlapping mesh network 221 is a wet scrubber, characterized in that the square size of the mesh forming the mesh network is different from each other. 6. The method of claim 5,
The mesh network is a wet scrubber, characterized in that it includes both a rectangular shape and a rhombic shape. 6. The method of claim 5,
The mesh networks are wet scrubber, characterized in that the distance between the mesh mesh is 25 ~ 50 mm. 3. The method of claim 2,
The gas inlet (250) is a wet scrubber, characterized in that formed in a venturi tubular structure at the installation position of the inlet injection nozzle (241) 3. The method of claim 2
The first perforated plate 231 is a wet scrubber, characterized in that it has an opening ratio of 65 to 75%. 3. The method of claim 2
The orbiting spray nozzle (242) is a wet scrubber, characterized in that a plurality of installed on the circumferential surface of the main body (100) and installed in a straight line passing through the center point of the main body (100) and an inclined direction of 30 to 40 °. According to claim 1,
Wet scrubber, characterized in that it further comprises a demist (260) on the upper body (100).

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