JPS5824323A - Denitrating device - Google Patents

Abstract

PURPOSE:To simplify the shape of the outside frame for catalyst blocks and to assemble the blocks easily by providing means of regulating the movement among the catalyst blocks to members forming the outside frame of the catalyst block. CONSTITUTION:In a denitrating device provided with a denitration reactor wherein gases flow horizontally, the outside frame 3 of catalyst blocks 2 to be arranged in a denitration reactor 7 is formed roughly to a rectangular body by sticking plural pieces of angle steels and plural sheets of pressed corrugated plates 3C by welding, etc., wherein the plates 3C on the top side are alternately projected and recessed, and the plates on the bottom side are formed reverse from the plates on the top side. Since means for regulating the movement are provided to the members forming the outside frame of the blocks in the above- mentioned way, the shape of the outside frame is simplified and the labor and time for working are economized.

Description

[Detailed description of the invention] The present invention relates to a denitrification device equipped with a gas horizontal flow denitrification reactor]
In particular, it relates to the outer frame structure of catalyst blocks arranged and packed in a denitrification reactor.

FIG. 1 shows the appearance of a catalyst-style knit 1, which is the smallest unit of a parallel catalyst. Figure 2 shows the catalyst block 2t.
- As shown, the catalyst block 2 is composed of an outer frame 3, an inner partition plate 4, and catalyst units 1 and K respectively incorporated in each compartment formed by the partition plate 4 in the outer frame 3. .

Also, the members forming the outer frame 3 are the flat plate 31 and the angle iron 3b.
By fixing these members together by welding or the like, the outer frame 3 has a rectangular parallelepiped appearance. A stopper 5, which will be described in detail later, protrudes from the upper side of the outer frame 3 in the vertical direction, and the lower surface of the outer frame 3 has two flat plates with a gap into which the stopper 5 fits, as shown in FIG. A distance <6 is provided.

Figure 4 shows the gas horizontal flow denitrification reactor 7f.In order to improve the workability of catalyst filling in the field with one denitrification device,
Catalyst tubes are filled inside the denitrification reactor 7 in units of catalyst blocks. That is, a catalyst block 2 incorporating a plurality of catalyst units 1'' is arranged and filled in the denitrification reactor 7 in the vertical direction and in each horizontal direction orthogonal thereto.The gas flows as shown by the arrows in each figure. , the flow is carried out in one horizontal direction, and the function IK of each catalyst unit 1 in the denitrification reaction a+7 is
The denitrification reaction of Yoshigas is carried out. As shown in FIG. 4, a denitration reactor 7 packed with a large number of catalyst blocks 2't-arrayed.
In this case, there is a risk that the position between the catalyst blocks 2 may shift due to an earthquake or the like, and the catalyst blocks 2 may collapse from the denitrification reactor 7 to the outside. In particular, since the horizontal direction in which the gas flows is open, it is necessary to restrict the movement between the catalyst blocks 2 and 2. For this reason, in the past, stoppers were installed on the upper and lower sides of the outer frame of the catalyst block 2, as described above. Catalyst block 2f: A stopper at the bottom of the outer frame 3 of each catalyst block 2, in which the stopper 5 on the upper surface side of the outer frame 3 of each catalyst block 2 is stacked on top of it in advance when loading into the denitrification reactor 7. 6 to prevent movement between the catalyst blocks 2 and 2.

FIG. 5 is a diagram showing in detail the engagement state of the stopper 5 and the stop horn <6. are two stoppers 61m and 61b O fixed to the lower surface of the outer frame 32 of the upper catalyst block 22.
It is inserted between 91 and 8. Furthermore, as shown in FIGS. 2 and 3, such stoppers are secured at four locations between the upper and lower catalyst pulls.
In FIG. 5, the movement between the upper and lower catalyst blocks in the horizontal direction of gas flow is restricted by interference between the stop horns 51 of the lower catalyst block 21 and the outer frame 32 of the upper catalyst block 22, and is perpendicular to the gas flow direction. The movement between the upper and lower catalyst blocks in the horizontal direction is as follows: the lower catalyst block 21 and the upper catalyst block.

This is regulated by the interference of the block 22's stroke angle <61. By stacking the catalyst blocks 2 and packing them in an array in the denitrification reactor in this way, movement between the catalyst blocks is prevented.

However, in reality, the number of catalyst blocks 2 arranged and packed in the denitrification reactor of the denitrification device is on the order of several hundred.

Since it is necessary to install a stopper 5.6vc at a predetermined position on each catalyst block 2, the material and processing costs for the stopper are high, and the positioning and welding of the stopper requires a great deal of effort and time, making it extremely expensive. It is uneconomical.

The present invention has been made in view of the above, and an object of the present invention is to provide a catalyst block that can restrict movement between each catalyst block without providing a stopper f in the catalyst block.

In order to achieve this object, the present invention is characterized in that the member forming the outer frame of the catalyst block itself has a means for regulating movement between each catalyst block. Now, one embodiment of the present invention will be described. In each figure, the same reference numerals as those in FIG. 1 and FIG. 5 indicate the same or equivalent items.

Referring to FIG. 6, the outer frame 3 of one catalyst block 2 consists of a plurality of angle irons 31 and a plurality of pressed corrugated plates 5cL.
vt: By being fixed by welding or the like, the external appearance is formed into a y rectangular shape. On the upper surface of the outer frame 3, three corrugated plates 3c having a longitudinal direction perpendicular to the horizontal gas flow direction are provided at equal intervals, and two corrugated plates are provided on the front side and the rear side with respect to the gas flow direction. 3a is attached so as to protrude from the upper surface of the convex outer frame 3, and the intermediate corrugated plate 3c
is attached so that its concave portion opens on the upper surface of the outer frame 3. Although not shown, three corrugated plates 3c are provided on the lower surface of the outer frame 30 in the same way as on the upper surface of the outer frame 3, and the two corrugated plates 3c on the front and rear sides with respect to the gas flow direction are provided on the lower surface of the outer frame 30. The concave portion is opened on the lower surface, and the intermediate corrugated plate 3c is attached so that the convex portion thereof protrudes from the lower surface.

FIG. 7 shows a part of each catalyst block 2t forming the outer frame 3 as described above, arranged and packed in the denitrification reactor 7, and FIG. 8 shows the details of a part. The outer frame 32 of the catalyst block 2 in the upper stage has the convex portions of the front and rear corrugated plates 31c provided on the upper surface of the outer frame 31 of the catalyst block 2 in the rating stage.
It is fitted into a recess in the front and rear corrugated plates 32c provided on the lower surface. Further, an intermediate corrugated plate (not shown) provided on the lower surface of the outer frame 32 of the upper catalyst block 2 is inserted into a recessed portion of an intermediate corrugated plate (not shown) provided on the upper surface of the outer frame 31 of the lower catalyst block 2. The convex part (not shown) is -1) crowded. Therefore, the movement of the gas flow in the horizontal direction of the upper catalyst block 2 and the lower catalyst block 2 is restricted by the engagement of the respective uneven portions.

In addition, movement between the upper and lower catalyst blocks 2.2 in the horizontal direction perpendicular to the gas flow direction is caused by the lower surface of the outer frame 32 of the upper catalyst block 2 and the corrugated plate 3 on the upper surface of the outer frame 31 of the lower melting medium block 2.
1. , 32c interfere with the angle iron 31b of the outer frame 31 of the lower catalyst block 2 and the angle iron 32b of the outer frame 32 of the upper catalyst block 2.

According to the embodiment of the present invention described above, the following effects are achieved.

(1) By using a corrugated plate with concave and convex portions easily formed by press working as a member forming the outer frame of the catalyst block, movement between each catalyst block arranged and packed in the denitrification reactor is reduced. Since it can be controlled, there is no need to install a new front stopper and the structure of the catalyst block is simplified.

(2) Material costs and processing costs can be reduced compared to the conventional method, and the positioning and connecting work for attaching the stopper does not require any extra effort or time, making it extremely economical.

(3) Since a corrugated plate is used as a member forming the outer frame, the buckling strength of the outer frame is increased, and since a lightweight member tube can be used, economical efficiency is further improved.

In addition, in the above embodiment, three corrugated plates are provided on the upper and lower surfaces of the outer frame of each catalyst block, and the two corrugated plates on the front and rear sides have their recesses opened to the lower surface, and the intermediate The corrugated plates were installed so that their convex surfaces protruded from the lower surface, but all three of the corrugated plates on the lower surface were opened at the bottom of the concave portions, and each of the upper and lower catalyst plectanes had concave and convex portions at two locations, front and rear. It is also possible to engage the upper part.

Alternatively, all of the corrugated plates on the upper surface of the outer frame may have convex portions protruding from the upper surface, and all of the corrugated plates on the lower surface of the outer frame may have concave portions opened downward wK, and the convex and convex portions may be engaged at three locations.

The unevenness on the upper and lower surfaces of the outer frame may be reversed. Further, a corrugated plate may be provided in at least one location of each of the upper and lower catalyst blocks so that the upper and lower surfaces of each catalyst block are engaged with each other.

FIG. 9 shows another embodiment of the present invention, and is a turtle representing a part of the engagement state of each of the upper and lower catalyst blocks. Channel steel 31d provided on the upper surface of the outer frame 31 of the lower catalyst block
and the channel steel 32d provided on the lower surface of the outer frame 32 of the upper catalyst block are installed with their positions slightly shifted,
The convex part of the channel steel 31d and the concave part of the channel steel 32d produce the effects of the channel steel 31d, and since commercially available channel steel can be used, there is no need for press working, and processing costs can be further reduced. . The same effect can be obtained even if engineered shaped steel is used instead of channel steel.

According to the present invention described above, since the member forming the outer frame of the catalyst block itself is provided with a means for regulating the movement between the catalyst blocks arranged and packed in the denitrification reactor, the outer frame of the catalyst block The shape is simple, and the material cost and processing cost for the outer frame of the catalyst block can be reduced, and the time and effort of positioning the stopper and welding work are not required at all, making it extremely economical.

[Brief explanation of the drawing]

Figure 1 is an external view of a catalyst unit packed in a denitrification reactor, Figure 2 is a partially cutaway perspective view of a conventional catalyst block, Figure 3 is a bottom view of the catalyst block, and Figure 4 is Figure 5 showing the state in which catalyst blocks are packed in the denitrification reactor.
Figure 6 is an enlarged perspective view of a part of each catalyst block engaged with a conventional stopper; Figure 6 is a partially cutaway perspective view of a catalyst block according to an embodiment of the present invention; Figure g7; Figure 8 shows the details of the main parts of Figure 7.
The figure is a partially enlarged perspective view showing another embodiment of the present invention in which each catalyst block is in an engaged state. 1...Catalyst unit, 2...Catalyst block, 3...Outer frame of catalyst block, 3&I
"b * 36 @ 3d... Member forming the outer frame of the catalyst block, 7... Denitrification reactor. Figure 1 Figure 4 Figure 5 Figure 7 Figure 8 Figure 9 figure

Claims (1)

[Claims] 1. A plurality of catalyst units) 1- A denitrification reactor comprising an incorporated catalyst block and a denitrification reactor in which the catalyst blocks are arranged and packed in a vertical direction and each horizontal direction perpendicular thereto. In a denitrification device that performs denitrification of gas by flowing gas in one horizontal direction, the member forming the outer frame of each catalyst block arranged and packed in the denitrification reactor is moved between each catalyst block. A denitrification device characterized by having a means for regulating. 2. The members forming the outer frame of each of the catalyst blocks have at least one uneven portion on each of the upper and lower surfaces of the outer frame, and the catalyst blocks are arranged and packed in the denitrification reactor. The upper surface of the outer frame of the catalytic converter and the lower surface of the outer frame of the catalyst block positioned above the catalytic converter engage with each other at the uneven portion to restrict horizontal movement of gas flow between the catalyst blocks. The denitrification device according to item 1.