KR20220109217A - hanging support construction between big SCR cartridge and supporting frame for dust collector with dry reaction of combustion furnace - Google Patents

Abstract

The present invention relates to a hanging support structure between a large SCR cartridge and a support frame for an integrated dry reaction dust collector of an incineration and combustion furnace, in which a plurality of large SCR cartridges suspended in a hanging-support type on a support frame fixed to an inner wall of a casing are coupled and supported with coupling members to remarkably improve reaction efficiency.

Description

Hanging support construction between big SCR cartridge and supporting frame for dust collector with dry reaction of combustion furnace

The present invention provides a dry type of incineration and combustion furnace that significantly improves reaction efficiency by coupling and supporting large SCR cartridges of 1 row (vertical) and 2 rows (horizontal) in a hanging support type to a support frame fixed to the inner wall of the casing with a coupling member. It relates to a hanging support structure between a reactive dust collector-integrated large SCR cartridge and a support frame.

In general, various harmful substances, that is, NOx, SOx, HCl, dioxin, and fly ash, are generated in the exhaust gas that is burned and discharged from incinerators and combustion furnaces.

The exhaust gas containing the harmful substances is discharged into the atmosphere after removing the harmful substances through the air prevention facility before being released to the atmosphere. Air conditioning equipment will be installed.

As a conventional dust collector provided for the removal of the harmful substances, the one known in the patent literature (Korean Patent Publication No. 10-0769667) is proposed.

As shown in FIG. 19, the dust collector 70 of the patent document (Korean Patent Publication No. 10-0769667) has a rectangular casing 74, a casing cover 75 installed at the upper and lower ends of the casing 74. and a hopper 76 , an SCR cartridge 73 mounted vertically inside the casing 74 , an air nozzle 77 and a bag filter 78 .

The SCR cartridge 73 has a panel shape, and a pellet-shaped catalyst that reacts at a low temperature (145 to 180° C.) is contained therein. Selective Catalytic Reduction (SCR) is a technology that removes nitrogen oxides (NOx) emitted from combustions that burn fossil fuels or wastes. It is a catalyst for reducing ammonia gas (NH3) with NOx to N2 and H2O by selectively using the method of recycling or additionally adding ammonia water to the exhaust gas flowing into the SCR catalyst to supply the necessary reactants.

The chamber between the casing cover 75 and the SCR cartridge 73 is a clean zone 71 .

The clean zone 71 is a chamber in which the unpurified exhaust gas enters the hopper 76 and the purified gas that has passed through the bag filter 78 and the SCR cartridge 73 is collected.

In addition, the SCR cartridge 73 is placed on the support frame 72 which is an L-shaped steel fixed to the inner wall 74a of the casing 74 .

Generally, the SCR cartridge 73 includes a small cartridge of about 80 kg and a large cartridge of about 250 to 350 kg.

Four small cartridges are placed on a support frame 72 in the shape of a datum in one chamber, and if there are multiple chambers depending on the site, the small cartridges are arranged in a checkerboard type along the horizontal or vertical direction.

That is, the small cartridge is arranged in a plurality or more in both the transverse direction and the longitudinal direction in one chamber.

On the other hand, two large cartridges are placed on the support frame 72 of the sun-shape in one chamber, and if there are a plurality of chambers depending on the site, the large cartridges are arranged in a ladder type along the horizontal direction.

That is, a plurality of or more large-sized cartridges are arranged in one chamber along the transverse direction and only one along the longitudinal direction.

Accordingly, the small SCR cartridge and the large SCR cartridge are plural or more along the horizontal direction, but along the longitudinal direction, a plurality of small cartridges or more, and only one large cartridge can be arranged.

The conventional SCR cartridge 73 is placed on the support frame 72 with only its own weight, and when it is moved and shaken by the gas passing through the bag filter 78, the catalyst inside is tilted to one side, and the gas that has not reacted with the catalyst is cleaned. It goes directly into the zone 71 to lower the reaction efficiency.

In addition, unreacted gas is discharged through a gap with the support frame 72 due to manufacturing errors of the SCR cartridge 73 , thermal deformation (distortion) during use, vibration during operation, and the like.

Accordingly, the gas that has not passed through the SCR cartridge 73 directly enters the clean zone 71 to significantly reduce the reaction efficiency.

Korean Patent Publication No. 10-0769667

The present invention has been devised to solve the above-mentioned problem, and the incineration and combustion furnace which significantly improved the reaction efficiency by coupling and supporting a plurality of large SCR cartridges in a hanging support type to a support frame fixed to the inner wall of the casing with a coupling member The purpose is to provide a hanging support structure between the large SCR cartridge integrated with the dry reaction dust collector and the support frame.

In order to achieve the above object, the hanging support structure between the large SCR cartridge and the support frame integrated with the dry reaction dust collector of the incineration and combustion furnace of the present invention,

According to the present invention, there are the following effects.

Since the wing part installed around the large SCR cartridge body becomes a hanging support that only spans the support frame, when improving existing facilities using the upper part of the bag filter, when the installation space is limited due to investment cost and narrow site Large SCR Cartridge is suitable. In addition, since it is a large-scale production, it is good for reduction of manufacturing labor and material costs, and the catalytic reaction efficiency is high even with a sealed structure of a small area compared to the sealing packing of a small SCR cartridge, and the design cost can be reduced.

In addition, by constructing a support frame in a concave shape of a U-shaped steel and fastening a bolt to a female screw fixed to the inside of the support frame, it is possible to simply press the pressure plate to increase the combined support force of the large SCR cartridge.

On the other hand, if the split pin is inserted into the coupling hole of the coupling lug while the pressure plate is inserted into the coupling lug fixed to the inside of the support frame, the coupling is finished. keep it well

Furthermore, the pair of pins of the split pin spread apart toward the end, and the upper surface of the pair of pins has an inclined surface that becomes thinner toward the end, so that when the split pin is inserted into the coupling hole, the pair of pins are engaged It is difficult to get out by applying pressure to the ball, and as the inclined surface is inserted by a wedge action, the sealing efficiency according to the pressure between the support frame and the large SCR cartridge is significantly improved.

In addition, by further installing the packing between the vertical bar of the support frame and the wing portion of the large SCR cartridge, the sealing efficiency between the support frame and the large SCR cartridge is further improved.

In addition, by further fixing the support piece for the pressure plate facing the coupling lug on the outer edge of the front and rear left and right edge bars, it is possible to form a uniform pressure plate as a whole.

1 is a front view showing a main part of a dry reaction dust collector for an incineration and combustion furnace according to a preferred embodiment of the present invention.
2 and 3 are a right side view and a plan view of FIG. 1 ;
Figure 4 is a perspective view showing the large SCR cartridge of Figure 1;
FIG. 5 is a perspective view showing the catalyst filling cover plate of FIG. 4 separated;
6 and 7 are cross-sectional views taken along lines 6-6 and 7-7 of FIG. 4;
8 is a planar arrangement view of a basic support frame for a large SCR cartridge to which a coupling member according to a modification is applied;
9 is an enlarged cross-sectional view of part B of FIG. 2;
10 is an enlarged cross-sectional view of FIG. 9 b;
11 is an enlarged cross-sectional view of part A of FIG. 1;
12 and 13 are enlarged cross-sectional views illustrating portions a1 and a2 of FIG. 11 ;
14 is a plan arrangement view of a basic support frame for a large SCR cartridge to which a coupling member according to another modification is applied;
15 to 17 are cross-sectional views illustrating a coupling member of another modified example coupled to the support frame of FIG. 14 .
18 is a perspective view showing a split pin among coupling members of another modified example;
19 is a cross-sectional configuration view of a conventional dust collector.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numerals are assigned to the same parts as those of the prior art, and detailed descriptions thereof will be omitted.

In addition, as shown in Figs. 1 to 3, the left-right direction represents a horizontal or row, and the front-back direction represents a vertical or column, as shown in Figs.

1 is a front view showing a main part of a dry reaction dust collector for an incineration and combustion furnace according to a preferred embodiment of the present invention, FIGS. 2 and 3 are a right side view and a plan view of FIG. 1 , and FIG. 4 is a large SCR of FIG. A perspective view showing the cartridge, FIG. 5 is a perspective view showing the catalyst filling cover plate of FIG. 4 separated, and FIGS. 6 and 7 are cross-sectional views taken along lines 6-6 and 7-7 of FIG. 8 is a plan layout view of a basic support frame for a large SCR cartridge to which a coupling member according to a modification is applied, FIG. 9 is an enlarged cross-sectional view of part B of FIG. 2, and FIG. 10 is an enlarged cross-sectional view of FIG. and FIG. 11 is an enlarged cross-sectional view of part A of FIG. 1 , FIGS. 12 and 13 are enlarged cross-sectional views of parts a1 and a2 of FIG. 11 , and FIG. 14 is a coupling member according to another modified example is applied A plan layout view of a basic support frame for a large SCR cartridge, FIGS. 15 to 17 are cross-sectional views showing a coupling member of another modified example installed on the support frame of FIG. 14, and FIG. 18 is a split pin among coupling members of another modified example It is a perspective view.

1 to 3 are made of a dust collector module in which four unit dust collectors are arranged at the upper limits of 1, 2, 3, and 4;

Therefore, in the following description, only the dust collector located at the upper limit of 1 or the upper limit of 4 will be described as a reference.

1 to 3, the dust collector 100 of the incineration and combustion furnace according to this embodiment has a rectangular casing 110, a casing cover 130 installed at the upper and lower ends of the casing 110, and a hopper 150, a plurality of large SCR cartridges 200 and an air nozzle 170 and a bag filter 190 mounted on the inner upper part of the casing 110, a plurality of large SCR cartridges fixed to the inner wall of the casing 110 A support frame 300 on which the 200 is placed and supported, and a coupling member 500 for coupling and supporting the large SCR cartridge 200 to the support frame 300 are included.

In addition, the casing cover 130 is fixed to the upper side of the casing (110).

In addition, a clean zone 140 is formed in the chamber between the casing cover 130 and the large SCR cartridge 200 .

The large SCR cartridge 200 is, as shown in FIGS. 4 to 7 , a large SCR cartridge body 210 made of a stainless steel plate, and a wing unit 220 fixed along the side of the large SCR cartridge body 210 . ) is included.

The large SCR cartridge body 210 is a rectangular barrel in the shape of a panel, and the catalyst is contained therein.

The wing part 220 is supported over the upper surface of the support frame 300 .

The wing part 220 includes front and rear wing parts 221 formed along the front and rear sides, and left and right wing parts 223 formed along the left and right sides.

In addition, as shown in FIGS. 10, 12 and 13, the front and rear left and right wing parts 221 and 223 have one end along the circumference of the side plate 215. The horizontal wings (221a) (223a) include front and rear left and right vertical wings (221b) (223b) directed downward from the other end of the.

The inside of the front and rear left and right horizontal wings (221a) (223a) and the front and rear left and right vertical wings (221b, 223b) functions as a groove into which a packing 600 to be described later is inserted and mounted.

Of course, when there is no packing 600, the large SCR cartridge 200 is supported by the front and rear left and right horizontal wings (221a) (223a) over the support frame (300).

Since such a wing unit 220 only needs to span the support frame 300, when most of the existing facilities are improved using the upper bag filter, the large SCR cartridge 200 ) is suitable.

In addition, since it is a large-scale production, it is good to reduce manufacturing labor and material costs, and the catalytic reaction efficiency is high even with a sealed structure of a small area compared to the packing for sealing of a small SCR cartridge, and the design cost can be reduced.

The large SCR cartridge body 210 is composed of upper and lower perforated plates 211 , 213 and side plates 215 forming an outer shape. The side plate 215 is a U-shaped cross-section steel.

The upper and lower perforated plates 211 and 213 and the side plates 215 are coupled by riveting.

The porous distribution positions of the upper and lower perforated plates 211 and 213 are evenly distributed over the top and bottom to suit the site conditions and the minimization of non-reactive areas, or the upper and lower perforated plates 211 are distributed on the central side, and the lower perforated plates 213 are on the left and right sides. distributed in the , or the other distributed in the opposite position can be used.

Two lifting lugs 240 are fixed to each of the upper and lower surfaces of the upper perforated plate 211 .

The reason why the lifting lugs 240 are placed up and down is to fill the catalyst therein in a standing state.

In particular, the large SCR cartridge body 210 is made of a single case in appearance in which the inside is divided into a plurality.

For this internal multiple division, a divided rib-shaped U-shaped steel 250 such as the side plate 215 is further fixed to the inside of the upper and lower perforated plates 211 and 213 as shown in FIGS. 6 and 7 .

The divided rib-shaped U-shaped steel 250 serves as a reinforcing material to suppress the pulling deformation of the upper and lower perforated plates 211 and 213 or the torsion deformation of the large SCR cartridge body 210 when lifting.

Since the divided rib-shaped U-shaped steel 250 divides the cylinder in which the catalyst is to be contained, front and rear, left and right, openings 231 are formed on the front and rear surfaces of the U-shaped side plate 215 as shown in FIGS. 5 and 6, and the opening 231 is formed. ) is opened and closed by the cover plate 233 for filling the catalyst.

The catalyst filling cover plate 233 is fastened to the front and rear surfaces of the side plate 215 using flat head bolts.

At this time, the lower end of the front and rear vertical wings 221b with the opening 231 as shown in FIG. 10 is disposed above the lower ends of the left and right vertical wings 223b of FIGS. 12 and 13 (see FIG. 6 ), which are vertical The wing (221b) does not cover the opening (231) to insert and remove the catalyst, and to facilitate attachment and detachment of the cover plate (233).

Two such large SCR cartridges 200 are placed on the support frame 300 shown in FIG.

Of course, the support frame 300 is freely expandable left and right.

For example, as shown in FIG. 3, if the large SCR cartridge 200 is arranged in one row and four columns, the support frame 300 also extends further to the left and right.

The support frame 300 is a U-shaped cross-section steel and is fixed to the inner wall of the casing 110 .

That is, the support frame 300 includes front and rear left and right edge bars 310, 320, 330, 340 and front and rear edge bars 310, ( It includes a longitudinal cross bar 350 that is fixed to the inside of the 320.

In the space of the support frame 300 of this arrangement, two large SCR cartridge bodies 210 indicated by dotted lines are disposed and a hanging support type structure supported over the upper surface of the support frame 300 is constituted.

Here, as shown in FIGS. 1 and 2 , the support frame 300 is supported by the support for the bag filter 190 .

As shown in FIGS. 10, 12 and 13, the support frame 300 is a lower side of the first vertical bar 301, the second vertical bar 303, and the first and second vertical bars 301 and 303. It is a 凹 cross-section steel section consisting of a connecting bar (305) connecting the.

The first vertical bar 301 of the front and rear left and right edge bars 310 , 320 , 330 , 340 is fixed to the inner wall of the casing 110 as shown in FIGS. 10 and 12 .

A wing unit 220 is provided on the second vertical bar 303 of the front and rear left and right edge bars 310, 320, 330, 340 and the first and second vertical bars 301 and 303 of the vertical cross bar 350. will be supported across.

As shown in FIGS. 10, 12 and 13, the coupling member 500 according to a modification includes a female screw 510 inserted into the bottom of the connection bar 305, and a pressure plate placed on the large SCR cartridge 200. (530a or 530b), and a bolt 550 fastened to the female screw 510 so that the pressure plate 530a or 530b presses and supports the large SCR cartridge 200 to the support frame 300 .

Bolt 550 is an eye bolt.

The pressure plate (530a or 530b) is a first pressure plate (530a) and the front and rear left and right edge bars 310, 320, 330 that press and support over the large SCR cartridge 200 between the vertical edge bars 350, as shown in FIG. ) includes a second pressure plate (530b) for supporting the large SCR cartridge (200) over (340).

The first pressure plate 530a is a first horizontal plate, and presses the left and right large SCR cartridges 200 with the same pressure.

The second pressing plate 530b includes a second horizontal plate 531b and a second vertical plate 533b bent from the second horizontal plate 531b toward the connecting bar 305 as shown in FIGS. 10 and 11 . include

The second horizontal plate 531 is placed on the upper surface of the side plate 215 and the front and rear wing parts 221 of the U-shaped steel, and an insertion hole into which the bolt 550 is inserted is formed.

The second vertical plate 533b comes down to the inside of the support frame 300 , and when the end touches the bottom of the connection bar 305 , it is not fastened any more.

In addition, a packing 600 is further installed between the first and second vertical bars 301 and 303 and the wing portion 220 to prevent the unreacted gas from escaping through the gap to increase the reaction efficiency.

A coupling member 500 ′ according to another modified example is shown in FIGS. 15 to 17 .

The coupling member 500' includes a coupling lug 510 that is welded and fixed at predetermined intervals to the upper surface of the support frame 300, and a pressure plate 530 placed on the upper surface of the large SCR cartridge 200 on the coupling lug 510'. ') and a split pin 540' inserted into the coupling hole 511' of the coupling lug 510' and coupled while the pressure plate 530' is pressed.

The pressing plate 530' has a rectangular shape as shown in FIG. 17 .

As shown in FIG. 18, the split pin 540' includes a head 541' bent in a substantially oval shape, and a pair of pins 543' extending apart from each other from both sides of the head 541' toward the end. ) is included.

In particular, the split pin 540' is a pin formed by bending a band-shaped plate.

In addition, the upper surface of the pair of pins 543' is formed of an inclined surface 545' that gradually decreases in thickness toward the end.

The inclined surface 545 ′ forms a wedge shape when viewed from the front as shown in FIG. 17 .

Accordingly, if a pair of pins 543' of the split pin 540' are closed and then inserted into the coupling hole 511' and hit, the pressing plate 530' is pushed down by the inclined surface 545' while advancing. Because of the pressing, the bonding force is very excellent, and in particular, the reaction efficiency can be significantly increased by improving the contact sealing force between the large SCR cartridge 200 and the support frame 300 .

In addition, as the pair of V-shaped pins 543' are inserted into the coupling hole 511', a repulsive force to open up acts, thereby further preventing any separation.

The pressing plate 530 ′ described above is configured to combine the large SCR cartridge 200 with the vertical edge bar 350 of FIG. 14 interposed therebetween.

On the other hand, the coupling member 500 ′ of another modification shown in FIGS. 15 and 16 is a configuration for coupling between the large SCR cartridge 200 and the front and rear left and right edge bars 310 , 320 , 330 , 340 .

Therefore, in the coupling member 500' of another modification shown in FIGS. 15 and 16, as shown in FIG. 17, the front and rear left and right edge bars 310, 320, 330, and 340 for the pressure plate support pieces 550 ') is installed.

That is, the coupling member 500 ′ of another modified example shown in FIGS. 15 and 16 is a coupling lug 510 ′ that is installed at predetermined intervals on the upper surfaces of the front and rear left and right edge bars 310 , 320 , 330 , 340 . ), and the pressure plate support piece 550' facing the outer side of the coupling lug 510', and the large SCR cartridge 200 and the pressure plate support piece 550' inserted into the coupling lug 510'. It includes a pressing plate 530' placed on the upper surface, and a split pin 540' inserted into the coupling hole 511' of the coupling lug 510'.

Therefore, when the split pin 540' is coupled, the pressure plate 530' evenly presses the upper surface of the large SCR cartridge 200 and the support piece 550' for the pressure plate to improve the coupling force of the large SCR cartridge 200. make it

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify or modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. can be carried out.

100: dust collector of incineration and combustion furnace 110: rectangular casing
130: casing cover 140: clean zone
150: hopper 170: air nozzle
190: bag filter 200: large SCR cartridge
210: large SCR cartridge body 220: wing unit
240: lug for lifting 300: support frame
301,303: first and second vertical bars 305: connecting bar
500,500': coupling member 510: female thread
530a, 530b: platen 550: bolt
510': coupling lug 530': pressure plate
540': split pin 550': support piece for pressure plate
600: packing

Claims (9)

a support frame fixed to the inner wall of the casing between the casing cover and the bag filter;
Single placed on the upper surface of the support frame in the front-rear (vertical) direction, and a plurality of panel-shaped large SCR cartridges arranged side by side in the horizontal direction along the left-right (horizontal) direction;
Including a coupling member for coupling and supporting the large SCR cartridge to the support frame,
The support frame includes front and rear left and right edge bars fixed in a band shape along the circumference of the inner wall, and longitudinal cross bars fixed to the front and rear edge bars,
The large SCR cartridge includes a large SCR cartridge body disposed in the space of the support frame, and a wing portion protruding outward along the side of the large SCR cartridge body to be supported by hanging over the upper surface of the support frame,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
The method according to claim 1,
The front and rear left and right edge bars and the vertical cross bar are a concave cross-section made of a first vertical bar and a second vertical bar, and a connecting bar connecting the lower sides of the first and second vertical bars,
The first vertical bar of the front and rear left and right edge bars is fixed to the inner wall of the casing,
The wing portion spans the second vertical bar of the front and rear left and right edge bars, and the first and second vertical bars of the vertical cross bar,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
3. The method according to claim 2,
The coupling member includes a female screw inserted into the bottom of the connection bar, a pressure plate placed on the large SCR cartridge, and a bolt fastened to the female screw for the pressure plate to press and support the large SCR cartridge to the support frame.
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
4. The method according to claim 3,
The pressure plate includes a first pressure plate placed over the large SCR cartridge between the longitudinal rim bars, and a second pressure plate placed on the large SCR cartridge spanning the front, rear, left and right rim bars,
The first pressing plate is made of a first horizontal plate,
The second pressing plate comprises a second horizontal plate and a second vertical plate bent from the second horizontal plate toward the connecting bar,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
3. The method according to claim 2,
The coupling member includes a coupling lug fixed to the bottom of the coupling bar, a pressure plate fitted into the coupling lug and placed on the large SCR cartridge, and a coupling hole inserted into the coupling lug to press the pressure plate Including a split pin for engaging the pole,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
6. The method of claim 5,
A support piece for a pressing plate is further fixed to the outer edge facing the coupling lug to the front and rear left and right edge bars,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
7. The method of claim 6,
The split pin includes a head and a pair of pins extending apart from each other from both sides of the head toward the end,
The upper surface of the pin is made of an inclined surface that becomes thinner toward the end,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
8. The method according to any one of claims 1 to 7,
A packing is further installed between the upper surface of the support frame and the wing part,
The wing portion is formed with a packing groove including a horizontal wing protruding outward from the side of the large SCR cartridge body, and a vertical wing facing downward from the horizontal wing,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.
9. The method of claim 8,
An opening and closing plate for opening and closing the opening formed on the front and rear surfaces of the large SCR cartridge body is installed,
The wing portion includes front and rear wing portions and left and right wing portions formed on the front and rear and left and right sides of the large SCR cartridge body,
The lower end of the vertical wing of the front and rear wing parts is formed at a position where the opening is completely open,
The lower end of the vertical wing of the left and right wing parts is formed to be positioned lower than the lower end of the vertical wing of the front and rear wing parts,
A hanging support structure between a large SCR cartridge and a support frame with an integrated dry reaction dust collector for incineration and combustion furnaces.

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