KR101726299B1 - Filter Assembly for Horizontal Wet Scrubber and Method of Structuring Thereof - Google Patents

Abstract

The present invention relates to an assembly including a clean filter for a horizontal type wet scrubber and a method of forming the same, and has an effect of improving the gas-liquid contact of the scrubber by improving the permeability and discharge characteristics of the circulating water by lowering the pressure drop.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an assembly including a clean filter for a horizontal type wet scrubber,

The present invention relates to an assembly comprising a clean filter for a horizontal wet scrubber and to a method of construction thereof.

Currently, the semiconductor and display industries, which occupy one of the main industries in Korea, produce various kinds of gases during the manufacturing process. The gas is usually treated by a scrubbing method, an electrodeposition method, or a mixed method thereof.

The scrubber is the most common environmental equipment used for decades to purify gas. It injects liquid from above and blows up polluted gas from below to absorb and remove the gaseous material dissolved in the liquid. The solid material collides with the fine droplet It is the principle. Therefore, the longer the time the gas and the liquid meet, the greater the amount of the substance absorbed or collided with the gas, thereby improving the treatment efficiency.

Among such scrubbers, there is a horizontal type wet scrubber which is disposed horizontally rather than vertically and moves in a horizontal direction and supplies liquid to the upper end and the front end of the gas-liquid contacting portion as a spray (see FIG. 8) .

There are various types of packing materials placed in the scrubber. Examples of typical adsorbents include activated carbon described in JP-A-61-35849, adsorbents of basic substances such as NaOH, Ca (OH) ₂ and Mg (OH) ₂ described in JP-A No. 61-61619, There is a case where the activated carbon and the basic substance described in JP-A No. 5322674 are mixed. When the adsorbent is saturated, the ability of adsorbing toxic substances is remarkably lowered. Therefore, there is a problem that the adsorbent must be regenerated or exchanged after a certain period of use. In addition, there is a problem that it is somewhat inadequate to deal with a large amount of harmful gas treatment because the pressure drop is large.

In another method, there is a filter type for increasing the contact time and area of gas and liquid. Or a combination thereof may be used. A material such as activated carbon used as an adsorbent is used as a filtration medium, and an aqueous solution to which an additive is added is sprayed (Patent Publication No. 10-0340384).

The randomly oriented individual fibers of Laid-Open Publication No. 2013-0041928 comprise a multi-component fiber having a first region having at least a first melting temperature and a second region having a second melting temperature, The first melting temperature is characterized by being below the second melting temperature. At least a portion of the oriented individual fibers are bonded together at a plurality of intersections with the first region of multicomponent fibers and a method of making and using such patterned airlaid nonwoven fibrous webs is disclosed.

Korean Registered and Design Bulletin No. 30-0393644 is made of synthetic resin, non-woven fabric and charcoal. The auxiliary filter is formed so that front and rear frames can be joined and separated, and a plurality of ventilation holes are formed therein to generate air An auxiliary filter for an air filter has been disclosed in which negative ions introduce sterilized and purified air into an automobile room through a charcoal filter fitted in the auxiliary filter.

In Korean Registered and Design Bulletin 30-0813547, the material is a synthetic resin and is used for treating harmful gas introduced into a wet scrubber. It is detachable upward and downward to facilitate cleaning, and has a wet scrubber For example.

On the other hand, the filter assembly has excellent permeability of liquid, easy discharge and no sediment accumulation therein, and a filter having high gas-liquid contact performance and easy cleaning and disassembly, and an assembly including the filter have not been proposed yet.

Japanese Patent Application Laid-Open No. 61-35849 Japanese Patent Application Laid-Open No. 61-61619 U.S. Patent No. 5,322,674 Patent Registration No. 10-0340384 Published Patent Publication No. 2013-0041928

 Korean Registered Design Bulletin No. 30-039644  Korean Registered Design Bulletin No. 30-0813547

As described above, the present invention provides a clean filter capable of solving the difficulties of maintenance such as liquid permeability, internal sediment flooding, pressure drop, performance deterioration, cleaning and disassembling, which are problems of the filter used in the conventional horizontal type wet scrubber, And to provide a method of constructing the same.

According to an aspect of the present invention, there is provided a scrubber comprising: a plurality of clean filters disposed in parallel with a liquid and a gas moving direction of the scrubber, In the filter assembly for a scrubber, the clean filter includes an outer frame of a rectangular shape and an inner frame of a repeated shape inside the outer frame, and when a plurality of the clean filters are arranged in the form of layers at intervals as described above The liquid and the surface perpendicular to the gas moving direction are projected to provide a filter assembly for a horizontal wet scrubber wherein the empty portion is less than 10%, preferably less than 5%, more preferably less than 1%.

The repeated shapes of the clean filter inner frames arranged in a layer form may be the same or different from each other, and it is preferable that several other shapes are arranged.

On the other hand, examples of the clean filter may be a first clean filter, a second clean filter, and a third clean filter.

The first clean filter includes a first outer frame of a rectangular shape; A plurality of first inner frames arranged in a straight line shape to distribute the inside of the rectangular first outer frame at regular intervals in parallel; And a first inner member that is vertically and vertically staggered at regular intervals in the first inner frame but is not connected to the first inner frame that is adjacent to the first inner frame.

The second clean filter includes a second outer frame of a rectangular shape; And a second inner frame arranged to distribute the inside of the second outer frame of the rectangular shape into a plurality of regular rectangular shapes.

The third clean filter includes a third outer frame in a rectangular shape; A third inner frame disposed so as to distribute a plurality of straight lines within the third outer frame in parallel at regular intervals; Each of the pair of straight lines includes a third inner member which is internally connected at regular intervals and whose outer portion extends vertically and vertically at regular intervals but is not connected to the pair of straight lines.

The clean filter may be selected from among a first clean filter, a second clean filter, and a third clean filter.

The clean filter may further include a fixing portion that can be fixed to the adjacent clean filter, and the fixing portion may include a protrusion disposed on one side of the clean filter and a depression on which the protrusion disposed on the other side can be inserted. have.

The clean filter may be made of one or more of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), FRP, HDPE and PVDF.

The portion occupied by the inner frame of each clean filter in the entire cross-sectional area is 10 to 90%, preferably 30 to 70%, more preferably 45 to 55%. In order to reduce the area of an empty portion by projecting a plurality of clean filters arranged in a layer form, the clean filter can be arranged to rotate in units of 90 degrees.

The filter assembly for a horizontal type wet scrubber according to the present invention is configured in a hexahedron shape, and a surface perpendicular to the liquid and gas moving directions of the scrubber is opened, and a plurality of the clean filters are arranged in parallel And a case that is disposed in the form of a layer with respect to the surface.

Further, the case may further include an upper surface, a lower surface, or an upper surface including a surface perpendicular to the liquid and the gas moving direction of the scrubber. And the cleaning liquid of the clean filter can be dispersed through the further opened surface.

The case may be provided with an external fixing part that can be stacked and fixed in a front, back, top, bottom, left, and right sides so that a plurality of cases can be fixed inside the scrubber.

The case may be made of one or more of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), FRP, HDPE, PVDF.

The present invention provides a horizontal wet scrubber including the filter assembly for the horizontal wet scrubber.

The present invention also provides a method for treating exhaust gas using the horizontal wet scrubber.

Further, the present invention provides a method for cleaning a filter assembly of the horizontal type wet scrubber, wherein the upper part of the filter assembly is sprayed with water or a cleaning liquid to clean the filter assembly.

On the other hand, as an example of the clean filter arrangement in the filter assembly for a horizontal type wet scrubber, the first clean filter is formed; A second first clean filter connected to the first clean filter by being rotated by 90 degrees with respect to the direction in which the first clean filter is formed; A third clean filter stacked and connected in a direction in which the first clean filter is formed; A second third clean filter connected to the third clean filter by being rotated by 90 degrees with respect to the direction in which the third clean filter is formed; And a second clean filter stacked and connected in a direction in which the second third clean filter is formed.

The filter assembly for a horizontal type wet scrubber according to the present invention has advantages of high liquid permeability, little sediment of internal sediment, low pressure drop, little performance deterioration with time, easy maintenance such as washing and decomposition .

Specifically, the pressure drop can be the same or lower than that of the conventional technology.

In addition, there is an effect that the permeability of the circulating water is excellent through the optimum arrangement of the filter.

Further, there is an effect that the circulation water can be easily discharged through the optimum arrangement of the filter.

In addition, the geometry of the filter is optimized to provide an excellent gas-liquid contact.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a filter assembly for a horizontal wet scrubber according to an embodiment of the present invention.
2 is a front view, a side view, and an enlarged view of a first clean filter according to an embodiment of the present invention.
3 is a front view, a side view, and an enlarged view of a second clean filter according to an embodiment of the present invention.
4 is a front view, a side view, and an enlarged view of a third clean filter according to an embodiment of the present invention.
5 is a view of a closed type, one open type, and a vertical open type case, which is one embodiment of the present invention.
6 is an exploded view of a clean filter assembly that is an embodiment of the present invention.
FIG. 7 is a graph illustrating a pressure drop according to a change in flow rate of a clean filter according to an embodiment of the present invention.
Figure 8 is a schematic view of a typical horizontal wet scrubber.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings illustrate only the contents and scope of technology of the present invention, and the technical scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the technical idea of the present invention based on these examples.

In addition, terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings, and the inventor should appropriately define the concept of the term to describe its invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described herein are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention, so that there are various equivalents and modifications that can be substituted at the time of the present application It should be understood.

FIG. 1 is a side view of a filter assembly for a horizontal type wet scrubber according to an embodiment of the present invention when two layers are stacked. FIG.

2 is a front view, a side view, and an enlarged view of a first clean filter according to an embodiment of the present invention.

The first clean filter 100 includes a first outer frame (not shown) having a rectangular shape; A plurality of first inner frames (110) arranged in a straight line shape to distribute the inside of the rectangular first outer frame at regular intervals in parallel; And a first inner member 120 extending vertically up and down at regular intervals in the first inner frame but not connected to the first inner frame.

The first outer frame of the first clean filter may have a polygonal shape and may be rectangular, square, pentagonal, or hexagonal. Preferably a square.

The cross section of the first outer frame may have a polygonal or circular shape, and may preferably be a square. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The intervals between the first inner frames may be equally spaced or variable. In the case of variable, the interval may become narrower or wider as the section becomes closer to the center of the first clean filter. Preferably the same interval.

The cross section of the first inner member may have a polygonal or circular shape, and may be preferably rectangular. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The first clean filter may further include a first fixing part 130 that can be fixed to an adjacent clean filter. The first fixing part may include a protrusion disposed on one side of the clean filter and the protrusion disposed on the other side, And a depression that can be formed.

The cross section of the first fixing part may have a polygonal or circular shape, and may be preferably rectangular. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The protruding direction of the first fixing part may have a protruding angle of 0 degrees or more and 180 degrees or less based on a parallel line to the first inner frame. And may have a projection angle of preferably 90 degrees.

3 is a front view, a side view, and an enlarged view of a second clean filter according to an embodiment of the present invention.

The second clean filter 200 includes a second outer frame (not shown) having a rectangular shape; And a second inner frame 210 arranged to distribute the inside of the second outer frame of the rectangular shape into a predetermined plurality of rectangular shapes.

The second outer frame of the second clean filter 200 may have a polygonal shape and may be rectangular, square, pentagonal, or hexagonal. Preferably a square.

The cross section of the second outer frame may have a polygonal or circular shape, and may preferably be rectangular. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The second clean filter may further include a second fixing part 220 that can be fixed to an adjacent clean filter. The second fixing part may include a protrusion disposed on one side of the clean filter and the protrusion disposed on the other side And a depression that can be inserted.

The cross section of the second fixing part 220 may have a polygonal or circular shape, and may be preferably rectangular. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The protruding direction of the second fixing part may have a protruding angle of 0 degrees or more and 180 degrees or less with respect to a parallel line to the second inner frame. And may have a projection angle of preferably 90 degrees.

4 is a front view, a side view, and an enlarged view of a third clean filter according to an embodiment of the present invention.

The third clean filter 300 includes a third outer frame (not shown) of a rectangular shape; A third inner frame (310) arranged to distribute a plurality of pairs of straight lines in parallel at regular intervals in the third outer frame of the rectangular shape; Each of the pair of straight lines includes a third inner member 320 which is connected to the inside at regular intervals and the outside is vertically and vertically extended at regular intervals but is not connected to the pair of straight lines.

The third outer frame of the third clean filter 300 may have a polygonal shape and may be rectangular, square, pentagonal, or hexagonal. Preferably a square.

The cross section of the third outer frame may have a polygonal or circular shape, and may preferably be a square. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The spacing between a pair of straight lines or straight lines of the third inner frame 310 may be the same or spaced. When the third clean filter 300 is variable, the gap may become narrower or wider toward the end surface with respect to the center of the third clean filter 300. Preferably the same interval.

The cross section of the third inner member 320 may have a polygonal or circular shape, and preferably a rectangular shape. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The third clean filter 300 may further include a third fixing part 330 that can be fixed to an adjacent clean filter. The third fixing part may include a protrusion disposed on one side of the clean filter, And a depression into which the protrusion can be inserted.

The cross section of the third fixing part 330 may have a polygonal or circular shape, and may be preferably rectangular. It is apparent that the present invention is not limited to the shape as long as it can improve the contact efficiency.

The protruding direction of the third fixing part 330 may have a protruding angle of 0 degree or more and 180 degrees or less with reference to a parallel line to the third inner frame 310. And may have a projection angle of preferably 90 degrees.

The clean filter including the first clean filter, the second clean filter and the third clean filter is manufactured by at least one of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), FRP, HDPE and PVDF .

The portion of the clean filter that occupies the entire cross-sectional area of the inner frame is 10 to 90%, preferably 30 to 70%, more preferably 45 to 55%. In order to reduce the area of an empty portion by projecting a plurality of clean filters arranged in a layer form, the clean filter can be arranged to rotate in units of 90 degrees.

The clean filter may be 200 to 300 mm in length and 5 to 30 mm in thickness, preferably 235 mm in width and 15 mm in thickness. The surface area of the clean filter may be 10 to 200 m ² / m ³ . The weight of the clean filter may be 0.05 to 0.2 kg / ea.

5 is a view showing a closed type 410, an open type 420, and a vertically open type case 430 according to an embodiment of the present invention. The case may be further provided with an external fixing part 411, which can be stacked and fixed in a front, back, top, bottom, right and left, and a plurality of cases can be fixed to the inside of the scrubber.

The material of the case may be polymer resin, metal, or non-metal. Preferably, it may be a polymer resin of any one of an alkyd resin, an acrylic resin, a phenol resin, a maleic anhydride resin, an urea resin, and an epoxy resin. More preferably, it may be one of PP, PE, PU, PVC, HDPE, LDPE and LLDPE.

6 is an exploded view of an assembly of an embodiment of the present invention.

As a laminated example of the clean filter, the first clean filter is formed; A second first clean filter connected to the first clean filter by being rotated by 90 degrees with respect to the direction in which the first clean filter is formed; A third clean filter stacked and connected in a direction in which the first clean filter is formed; A second third clean filter connected to the third clean filter by being rotated by 90 degrees with respect to the direction in which the third clean filter is formed; And a second clean filter stacked and connected in a direction in which the second third clean filter is formed.

The case is configured in a hexahedron shape, and a surface perpendicular to the direction of liquid and gas movement of the scrubber is opened, and a plurality of the clean filters are arranged in a layer shape with an interval therebetween in parallel to the open vertical surface.

Further, the case may further include an upper surface, a lower surface, or an upper surface including a surface perpendicular to the liquid and the gas moving direction of the scrubber. And the cleaning liquid of the clean filter can be dispersed through the further opened surface.

A rectangular fixed cap 412 for fixing the clean filter may be further inserted into the front surface and / or the rear surface of the case in which the stacked clean filter is housed.

And a plurality of clips 413 for fixing the fixed cap 412 to the case may be formed.

The porosity of the case including the clean filter may be 85% to 95%, preferably 90%.

The surface area of the case including the clean filter may be 120 to 140 m ² / m ³ . And preferably 130 m ² / m ³ .

The weight of the case alone may be 1.5 to 3 kg / ea. Preferably 2.0 kg / ea.

The case may have a width (W) of 190 mm to 310 mm, preferably a width of 245 mm.

The case may have a length (L) of 190 mm to 310 mm, preferably 245 mm.

The case may have a height of 100 mm to 300 mm (H), preferably 210 mm.

(Example)

A first clean filter; A second first clean filter connected to the first clean filter by being rotated by 90 degrees with respect to the direction in which the first clean filter is formed; A third clean filter stacked and connected in a direction in which the first clean filter is formed; A second third clean filter connected to the third clean filter by being rotated by 90 degrees with respect to the direction in which the third clean filter is formed; And a second clean filter laminated and connected in the direction in which the second third clean filter is formed are inserted into the case in order.

After each filter is inserted into the case, the fixing cap 412 is fastened using a clip to form an assembly. The pressure drop was then measured according to the change in flow rate.

FIG. 7 is a graph illustrating a pressure drop of a clean filter assembly according to an embodiment of the present invention.

The results show that the pressure drop increases as the flow rate increases and the pressure drop increases as the gas velocity increases.

However, the clean filter according to the present invention has a high liquid permeability, little accumulation of internal sediment, a low pressure drop, and a high permeability against a conventional random packing scrubber, a packing type cartridge scrubber, a filter type cartridge scrubber and a non- And there is an advantage that maintenance such as washing and disassembly is easy.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: 1st clean filter
110: first inner frame
120: first inner member
130: first fixing unit
200: 2nd clean filter
210: second inner frame
220: second fixing portion
300: Third clean filter
310: third inner frame
320: third inner member
330: third fixing unit
410: closed type case
420: One open case
430: Vertical open case
411:
412: Fixed cap
413: Clip
511: Packing media
512: Moisture eliminator
513: air / gas inlet
514: liquid circulation pump
515: Fan / motor combination
516: air / gas discharging portion after cleaning
517: Grating

Claims (17)

And a filter assembly for a horizontal type wet scrubber, the filter assembly including a plurality of clean filters arranged in layers in parallel with a plane perpendicular to a gas moving direction of the scrubber,
The clean filter includes a first outer frame of a rectangular shape; A plurality of first inner frames arranged in a straight line shape to distribute the inside of the rectangular first outer frame at regular intervals in parallel; A first clean filter including a first inner member which is vertically and vertically staggered at regular intervals in the first inner frame but is not connected to a first inner frame in close proximity to the first inner frame;
A second outer frame in a rectangular shape; A second clean filter including a second inner frame arranged to distribute the inside of the rectangular second outer frame in a predetermined plurality of rectangular shapes, and
A third outer frame in a rectangular shape; A third inner frame disposed so as to distribute a plurality of straight lines within the third outer frame in parallel at regular intervals; Wherein each of the pair of straight lines includes a third inner filter connected to the inner part at regular intervals and the outer part extends vertically and vertically at regular intervals but not connected to the pair of straight lines, Selected,
When the clean filters are disposed in parallel with each other in the form of layers as described above, a surface perpendicular to the gas moving direction is projected so that an empty portion is less than 10%
Wherein the filter assembly for a horizontal type wet scrubber is configured in a hexahedron shape and further includes a top surface, a bottom surface, or an upper surface including a surface perpendicular to the gas moving direction of the scrubber, and a plurality of the clean filters, Further comprising a case disposed in a layered form with a spacing parallel to the vertical plane. ≪ Desc / Clms Page number 13 >
The method according to claim 1,
Characterized in that the projected, empty portion is less than 5%.
3. The method of claim 2,
Characterized in that the projected, empty portion is less than 1%.
delete delete The method according to claim 1,
Wherein each of the clean filters arranged in the layer form further comprises a fixing part capable of fixing with the adjacent clean filter.
The method according to claim 6,
Wherein the fixing portion comprises a protrusion disposed on one side of the clean filter and a depression into which the protrusion disposed on the other side can be inserted.
The method according to claim 1,
The clean filter is characterized by being made of at least one of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), FRP, HDPE, PVDF.

The method according to claim 1,
Characterized in that the inner frame of each clean filter occupies 10% to 90% of the total cross-sectional area.
4. The method according to any one of claims 1 to 3,
Wherein the clean filter in the filter assembly is rotatable in 90 degree increments to meet the requirements of the empty portion.
delete delete The method according to claim 1,
Wherein the case is characterized in that a plurality of external fixing parts capable of being stacked and fixed in the front, rear, left and right sides are added.
The method according to claim 1,
The case is characterized by being made of at least one of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), FRP, HDPE, PVDF.
delete A method for treating exhaust gas using the horizontal wet scrubber of claim 1.
A method of cleaning a horizontal wet scrubber according to claim 1,
Wherein the filter assembly is sprayed with water or a cleaning liquid to clean the filter assembly.

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