KR20230027550A - bottom support construction between small SCR cartridge and supporting frame for dust collector of combustion furnace - Google Patents

Abstract

The present invention relates to a bottom support structure between a small SCR cartridge for a dust collector of an incineration and combustion furnace and a support frame. According to the present invention, At least a plurality of small-sized SCR cartridges supported by a bottom support type on the support frame fixed to an inner wall of a casing are coupled and supported by a coupling member, thereby significantly improving reaction efficiency. The bottom support structure between the small SCR cartridge for the dust collector of the incineration and combustion furnace and the support frame of the present invention comprises: the support frame; the plurality of small-sized SCR cartridges in a shape of a panel; and the coupling member.

Description

Bottom support construction between small SCR cartridge and supporting frame for dust collector of combustion furnace}

The present invention combines and supports at least a plurality of small SCR cartridges supported by a bottom support type on a support frame fixed to the inner wall of the casing with a coupling member, thereby significantly improving the reaction efficiency. It relates to liver bottom support structures.

In general, various harmful substances, that is, NOx, SOx, HCl, dioxins, and fly ash (FLY ASH) are generated in exhaust gas discharged from combustion in incinerators and combustion furnaces.

Exhaust gas containing the toxic substances is released into the atmosphere after removing toxic substances through an air pollution prevention facility before being released into the atmosphere. Air protection equipment will be installed.

As a conventional dust collector provided for the removal of the harmful substances, a known one from a patent document (Korean Patent Registration No. 10-0769667) filed and registered by the present applicant is proposed.

As shown in FIG. 18, the dust collector 70 of the patent document (Korean Patent Publication No. 10-0769667) includes a cylindrical casing 74 and 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 to remove nitrogen oxides (NOx) emitted from diesel vehicles. It is a catalyst that reacts ammonia injected from the front of the SCR catalyst with NOx to reduce it to N2 and H2O.

A 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 unpurified exhaust gas enters the hopper 76 and the purified gas passing 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 a L-shaped steel, fixed to the inner wall 74a of the casing 74.

In general, 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 the Tian-shaped support frame 72 in one chamber, and when there are a plurality of chambers depending on the site, the small cartridges are arranged in a checkerboard type along the horizontal or vertical direction.

That is, a plurality or more of the small cartridges are arranged in one chamber in both the horizontal and vertical directions.

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

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

Accordingly, small SCR cartridges and large SCR cartridges are overlapped or more in the horizontal direction, but a plurality of small cartridges or more and only one large cartridge can be distinguished in the vertical direction.

Such a conventional SCR cartridge 73 is placed on the support frame 72 only by its own weight, and when moved and shaken by the gas passing through the bag filter 78, the catalyst inside is biased to one side, so that the gas that has not contacted with the catalyst is cleaned. It enters the zone 71 directly and lowers the reaction efficiency.

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

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

Korean Registered Patent Publication No. 10-0769667

The present invention was made to solve the above problems, and incineration and combustion significantly improved reaction efficiency by combining and supporting a plurality of small SCR cartridges supported by a bottom support type on a support frame fixed to the inner wall of the casing with a coupling member. Its purpose is to provide a bottom support structure between a small SCR cartridge for a furnace dust collector and a support frame.

In order to achieve the above object, the bottom support structure between the small SCR cartridge for the dust collector of the incineration and combustion furnace and the support frame of the present invention includes a support frame fixed to the inner wall of the casing between the casing cover and the bag filter, and the support frame A plurality of small SCR cartridges in a panel shape arranged side by side in the horizontal direction along the left and right (horizontal) and front and rear (vertical) directions on the upper surface, and a coupling member for coupling and supporting the small SCR cartridges to the support frame, includes front and rear left and right rim bars fixed in a band shape along the circumference of the inner wall, and a vertical cross bar and a lateral cross bar fixed to the front and rear left and right rim bars in a cross shape, and the small SCR cartridge has a lower surface of the edge of the support frame The bottom support is placed on the upper surface, and the coupling member is coupled with coupling lugs fixed to the upper surface of the support frame at predetermined intervals, and coupled to the coupling lugs to press and hold the small-sized SCR cartridge to the support frame. includes wealth

In addition, in the bottom support structure between the small SCR cartridge and the support frame for the dust collector of the incineration and combustion furnace of the present invention, the coupling part is inserted into the coupling lug and placed on the small SCR cartridge, and the coupling hole of the coupling lug It includes a split pin that is inserted into and couples the pressing plate while pressing.

In addition, in the bottom support structure between the small SCR cartridge for the dust collector of the incineration and combustion furnace of the present invention and the support frame, the front, rear, left and right rim bars are further fixed to the support plate for the pressing plate on the outside facing the coupling lug.

On the other hand, in the bottom support structure between the small SCR cartridge for a dust collector of the incineration and combustion furnace of the present invention and the support frame, a gasket is further installed between the upper surface of the support frame and the lower edge of the small SCR cartridge.

Furthermore, in the bottom support structure between the small SCR cartridge for dust collectors in incineration and combustion furnaces and the support frame of the present invention, the split pin includes a head and a pair of pins extending from both sides of the head toward the end. Including, the upper surface of the pin is made of an inclined surface that becomes thinner toward the end.

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

By arranging small SCR cartridges in a multiple division type, it is lighter than large SCR cartridges, so it is easy to transport, and it is easy to apply to new facilities because there is no need for huge lifting equipment during maintenance.

In addition, a number of small SCR cartridges are pressurized and supported by being coupled to a bottom support type support frame supporting the lower edge of the small SCR cartridge by means of a coupling member, thereby significantly improving reaction efficiency by blocking movement by passing gas.

In addition, since the coupling is completed when the split pin is inserted into the coupling hole of the coupling lug while the pressurizing plate is inserted into the coupling lug, the plurality of pressurizing plates are uniformly pressed and the plurality of small SCR cartridges are well leveled.

Moreover, the pair of pins of the split pin spread out from each other toward the end, and the upper surface of the pair of pins is made of an inclined surface whose thickness becomes thinner toward the end, so that when the split pin is inserted into the coupling hole, the pair of pins are coupled It is difficult to come out by applying pressure to the ball, and as the inclined surface is inserted through a wedge action, the sealing efficiency due to the pressurization between the support frame and the small SCR cartridge is significantly improved.

In addition, since a gasket is further installed between the upper surface of the support frame and the lower edge of the small SCR cartridge, sealing efficiency between the support frame and the small SCR cartridge is further improved.

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

1 is a front view showing a main part of a dust collector of 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 small-sized SCR cartridge of Figure 1;
Figure 5 is a plan view of Figure 4;
Figure 6 is a perspective view showing the cover plate of Figure 4 separated;
7 is a cross-sectional view taken along line 7-7 of FIG. 5;
8 is a planar arrangement of a basic support frame for a small-sized SCR cartridge.
9 is an enlarged plan view of part A of FIG. 1 or 2;
10 is a cross-sectional view taken along line 10-10 of FIG. 9;
Fig. 11 is a cross-sectional view showing the pressurizing plate and the split pin in Fig. 10 separated.
Fig. 12 is a perspective view showing a split pin;
13 is an enlarged cross-sectional view of part B of FIG. 1 or 2;
14 is a cross-sectional configuration diagram of a conventional dust collector.

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

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

1 is a front view showing the main parts of a 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 small SCR cartridge of FIG. Figure 5 is a plan view of Figure 4, Figure 6 is a perspective view showing the cover plate of Figure 4 separated, Figure 7 is a cross-sectional view taken along line 7-7 of Figure 5, Figure 8 is a small SCR A plane arrangement view of a basic support frame for a cartridge, FIG. 9 is an enlarged plan view of part A of FIG. 1 or 2, FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 9, and FIG. 11 is in FIG. FIG. 12 is a perspective view of the split pin, and FIG. 13 is an enlarged cross-sectional view of part B of FIG. 1 or 2 .

As shown in FIGS. 1 to 3, the dust collector 100 of the incineration and combustion furnace according to the present embodiment includes a cylindrical casing 110, a casing cover 130 installed at the upper and lower ends of the casing 110, and a hopper 150, a plurality of small SCR cartridges 200, an air nozzle 170, and a bag filter 190 mounted vertically inside the casing 110, and a plurality of small SCRs while being fixed to the inner wall of the casing 110 It includes a support frame 300 on which the cartridge 200 is placed and supported, and a coupling member 500 for coupling and supporting the small-size SCR cartridge 200 to the support frame 300.

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

As shown in FIGS. 4 to 7 , the small SCR cartridge 200 is a panel-shaped cylinder made of a steel plate made of Sus material, and contains a catalyst therein.

The small SCR cartridge 200 is composed of upper and lower perforated plates 210 and 220 and side plates 230 forming an outer shape. The side plate 230 is formed bent in a U-shape.

The upper and lower perforated plates 210 and 220 and the side plates 230 are coupled by riveting.

The location of distribution of pores in the upper and lower perforated plates 210 and 220 is evenly distributed over the entire upper and lower portions according to field conditions and minimization of the unreacted area, or distributed in the center of the upper perforated plate 210 and on the left and right sides of the lower perforated plate 220. Distributed in, or otherwise distributed in the opposite position can be used.

On the upper surface of the upper perforated plate 210, two lugs 240 for lifting are fixed at a predetermined interval from the center of the left and right sides, for example, two lugs 240.

In addition, inside the upper and lower perforated plates 210 and 220, as shown in FIG. 7, a divided rib plate 250 is further fixed on the same line as the lifting lug 240.

The split rib plate 250 serves as a reinforcing material that suppresses pulling deformation of the upper perforated plate 210 or twisting deformation of the small SCR cartridge 200 during lifting.

Since the split rib plate 250 partitions the cylinder into which the catalyst is contained in left and right sides, openings 231 are formed on the front and rear surfaces of the side plate 240 as shown in FIG. 6, and the opening 231 is attached to the cover plate 233 is opened by

The cover plate 233 is fastened to the front and rear surfaces of the side plate 240 with countersunk bolts.

Four such small SCR cartridges 200 are placed on the power plant support frame 300 shown in FIG.

Of course, the support frame 300 can be extended in all directions.

For example, as shown in FIGS. 1 and 2 , if the small SCR cartridges 200 are arranged in 5 rows and 8 columns, the support frame 300 is further extended in the front, rear, left and right directions.

The support frame 300 is a structural steel material and is fixed to the inner wall of the casing 110 .

That is, as shown in FIG. 8, the support frame 300 includes front and rear rim bars 310, 320, 330, and 340 fixed in a belt shape along the circumference of the inner wall, and front and rear rim bars 310 ( 320) includes a longitudinal cross bar 350 and a transverse cross bar 360 fixed in a cross shape to the inside.

On the upper surface of the support frame 300 of this arrangement, a bottom support type structure is formed along the circumference of each of the four small SCR cartridges 200 indicated by dotted lines.

Here, as shown in FIG. 2 , a support rod 120 is installed between the support frame 160 for the casing cover supporting the casing cover 200 and the support frame 300 for the small SCR cartridge 200 .

The support frame 160 for the casing cover is placed on top of the casing 110 and is fixed.

As shown in FIGS. 9 to 12, the coupling member 500 is coupled to the coupling lug 510 welded and fixed to the upper surface of the support frame 300 at predetermined intervals, and the small SCR coupled to the coupling lug 510. The cartridge 200 includes a coupling portion 520 pressurized and supported by the support frame 300 .

As shown in FIGS. 10 and 11, the coupling part 520 is inserted into the coupling lug 510 and coupled to the press plate 530 placed on the upper surface of the support frame 300 and the upper surface of the small SCR cartridge 200. A split pin 540 is inserted into the coupling hole 511 of the lug 510 and couples the pressure plate 530 while pressurizing it.

The pressing plate 530 is a rectangular plate as shown in FIG. 9 .

As shown in FIG. 12, the split pin 540 includes a head 541 bent in an almost elliptical shape and a pair of pins 543 extending from both sides of the head 541 to diverge from each other toward the ends. .

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

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

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

Therefore, when the 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 pressed down by the inclined surface 545 while moving forward, so that the coupling force increases. It is very excellent, and in particular, the reaction efficiency can be significantly increased by improving the contact sealing force between the small SCR cartridge 200 and the support frame 300.

In addition, as the pair of pins 543 widened in a V shape are inserted into the coupling hole 511, a repulsive force to be opened acts to further prevent any separation.

The coupling part 520 described above is a configuration for coupling the small SCR cartridge 200 with the vertical and horizontal border bars 350 and 360 interposed therebetween.

On the other hand, the coupling part 520' of another modified example shown in FIG. 13 is a configuration for coupling between the small SCR cartridge 200 and the front, rear, left, and right edge bars 310, 320, 330, and 340.

The coupling portion 520' has almost the same configuration as the coupling portion 520 of one modified example, but as shown in FIGS. The difference is that the support piece 550 is installed.

That is, the coupling part 520 'of another modified example is a coupling lug 510 installed at predetermined intervals on the upper surface of the front and rear left and right edge bars 310, 320, 330, and 340, and the coupling lug 510 A supporting piece 550 for the pressure plate facing the outside of the platen, a pressure plate 530 inserted into the lug 510 for coupling and placed on the upper surface of the small SCR cartridge 200 and the support piece 550 for the pressure plate, and a lug for coupling ( 510) includes a split pin 540 inserted into the coupling hole 511.

Therefore, when the split pin 540 is coupled, the pressure plate 530 evenly presses the upper surfaces of the small SCR cartridge 200 and the support piece 550 for the pressure plate, thereby improving the bonding force of the small SCR cartridge 200.

On the other hand, as shown in FIGS. 10 and 13, a gasket 600 is further installed between the upper surface of the support frame 300 and the lower edge of the small SCR cartridge 200 to further improve the sealing force and further improve the reaction efficiency. can be raised

As described above, although it has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify or transform the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. and can be carried out.

100: Dust collector for incineration and combustion 110: Cylindrical casing
130: casing cover 140: clean zone
150: hopper 170: air nozzle
190: bag filter 200: small SCR cartridge
300: support frame 500: coupling member
510: coupling lug 520,520': coupling part
530: pressure plate 540: split pin
550: support for pressure plate 600: gasket

Claims (5)

A support frame fixed to the inner wall of the casing between the casing cover and the bag filter;
A plurality of small panel-shaped SCR cartridges arranged horizontally side by side on the upper surface of the support frame in the left and right (horizontal) and front and rear (vertical) directions;
Including a coupling member for coupling and supporting the small-sized SCR cartridge to the support frame,
The support frame,
Front and rear left and right rim bars fixed in a band shape along the circumference of the inner wall,
Including a longitudinal cross bar and a transverse cross bar fixed in a cross shape to the front, rear, left and right border bars,
The small SCR cartridge is bottom supported by placing the lower surface of the edge on the upper surface of the support frame,
The coupling member is
Coupling lugs fixed to the upper surface of the support frame at predetermined intervals;
A coupling portion coupled to the coupling lug and pressurizing and supporting the small-sized SCR cartridge to the support frame,
Bottom support structure between small SCR cartridge for dust collector of incineration and combustion furnace and support frame.
The method of claim 1,
the coupling part,
a pressing plate inserted into the coupling lug and placed on the small SCR cartridge;
Including a split pin that is inserted into the coupling hole of the coupling lug and couples the pressing plate while pressing.
Bottom support structure between small SCR cartridge for dust collector of incineration and combustion furnace and support frame.
The method of claim 2,
In the front, rear, left and right rim bars, a supporting piece for a pressure plate is further fixed to the outside facing the coupling lug,
Bottom support structure between small SCR cartridge for dust collector of incineration and combustion furnace and support frame.
The method of claim 3,
A gasket is further installed between the upper surface of the support frame and the lower edge of the small SCR cartridge,
Bottom support structure between small SCR cartridge for dust collector of incineration and combustion furnace and support frame.
The method according to any one of claims 2 to 4,
The split pin,
with the head,
Including a pair of pins extending from both sides of the head to diverge from each other toward the end,
The upper surface of the pin is made of an inclined surface whose thickness becomes thinner toward the end.
Bottom support structure between small SCR cartridge for dust collector of incineration and combustion furnace and support frame.

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