JP3728649B2 - Adsorbent module sealing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to nitrogen dioxide (NO₂) Adsorbent removal device, and more specifically, hazardous substances with environmental standards set out of low-concentration nitrogen oxides (NOx) contained in ventilation gas from road tunnels and enclosed spaces Nitrogen dioxide (NO₂) Is removed by an adsorbent, and the present invention relates to a sealing device after filling with a modular adsorbent.
[0002]
[Prior art]
  Low concentrations of nitrogen oxides, especially NO, contained in ventilation gas from road tunnels and underground closed spaces₂As a removal method, the present inventors previously proposed a method of adsorbing and removing with a nitrogen dioxide adsorbent (Japanese Patent Application No. 9-16334, Japanese Patent Application No. 9-214764, Japanese Patent Application No. 9-214768, Japanese Patent Application No. 9). -238768 and Japanese Patent Application No. 9-246270).
[0003]
  Further, in Japanese Patent Application No. 10-130198 “Regeneration Method of Nitrogen Dioxide Adsorbent”, the nitrogen dioxide adsorbent is modularized, this adsorbent module is filled in an adsorption removal device, and after performing an adsorption operation for a predetermined time, the adsorption is performed. It was proposed that the adsorbent be removed from the adsorption removal device together with the module, transported to the recycling plant, and then regenerated, and then the regenerated adsorbent module be filled in the adsorption removal device again and used repeatedly.
[0004]
  Japanese Unexamined Patent Publication No. 9-299760 “Denitration Reactor and Denitration Device” is known as a prior art relating to a sealing device for an adsorbent module.
[0005]
  In this prior art, a seal structure for preventing passage of exhaust gas in a gap between adjacent catalyst blocks has been proposed. Specifically, a bolt is attached to one catalyst block of the adjacent catalyst block, and the passage prevention plate is fixed with a nut in the gap between the catalyst blocks using this bolt. Moreover, it is stated that since it is not a welded structure, it is not thermally deformed and there is no deformation or release of the seal portion.
[0006]
  However, measures are not taken for the gaps in the corners of the catalyst blocks, for example, in the crosses where the four catalyst blocks are gathered. For example, when the installation positions of four catalyst blocks are not on the same plane, this sealing device cannot completely seal the gap.
[0007]
[Problems to be solved by the invention]
  Usually, when a small amount of adsorbent is filled in the adsorber, the filling can be performed by a relatively simple operation as shown in the following (a) and (b).
[0008]
  (A) The adsorbent honeycomb (151) is cut out to a predetermined size, and the two adsorbent honeycombs (151) are inserted into the adsorber (152) from the inlet portion (see FIG. 16).
[0009]
  (B) An adsorbent honeycomb or an aggregate of several adsorbent honeycombs (153) cut out to a predetermined size is taken into the adsorber by removing the adsorber lid (154). At this time, the gap between the adsorbent honeycomb aggregate (153) and the inner surface of the adsorber (152) is filled with a sealing material (155) such as a sheet or string as necessary to prevent the passage of gas (FIG. 17). reference).
[0010]
  When the amount of gas to be processed is large, and a plurality of adsorbent modules are filled in the cross section of the processing gas, the processing gas is provided between the adsorbent modules and between the adsorbent modules and the adsorber. It is necessary to seal the gap by some means so as not to pass through.
[0011]
  In order to make the adsorption / removal device compact, the seal must be effective, and if the sealing mechanism is complicated or the operation is difficult, the adsorbent filling / exchange operation is hindered.
[0012]
  An object of the present invention is to provide a sealing device for an adsorbent module that can effectively seal a gap between adsorbent modules and a gap between an adsorbent module and a module housing chamber with a simple configuration.
[0013]
[Means for Solving the Problems]
  In the adsorbent module sealing device according to the present invention, a plurality of module accommodating chambers of a multi-stage shelf arranged in a reactor are filled with adsorbent modules, respectively. The adsorbent module is installed at both vertical and horizontal intervals with respect to the inflow cross section of the processing gas, and the window frame is formed using the shelf floor and support columns. Attach and seal the gap between the adsorbent modules and the adsorbent modules to the shelf floor and the column using this window frame, and the outer edge of the mouth-shaped airtight sheet on the inner edge of the entrance / exit part of the window frame Press the part with the presser plate, attach it to the window frame with bolts and nuts welded to the window frame, attach the presser frame to the inner edge of the airtight sheet with the bolts and nuts through the presser plate, Of Yuru outer frame, attaching a packing to the end closer to the window frame, by pressing the pressing frame to the packing, the gap of the adsorbent module and the window frameTheThe inner surface of the pressing frame is provided with a fastener for hooking a locking piece to a fixing claw attached to the module outer frame and using a lever to press the pressing frame against the module outer frame and fix it. is there.
[0014]
  Another according to the inventionAdsorbent module sealing deviceThe plurality of module storage chambers of the multi-stage shelf arranged in the reactor are respectively filled with the adsorbent module, and the module storage chamber for storing the plurality of adsorbent modules includes a plurality of struts and a multi-stage supported over these. The adsorbent module is installed at both vertical and horizontal intervals with respect to the cross section of the processing gas flow, and the window frame is attached using the shelf floor and the column, and the window frame is used. In the adsorber that seals the adsorbent modules and the gap between the adsorbent modules and the shelves and columns, the outer edge of the mouth-shaped airtight sheet is pressed against the inner edge of the entrance / exit part of the window frame with a press plate. Attach to the window frame with bolts and nuts welded toA flange with an inverted L-shaped cross section is attached to the inner surface of the end of the module outer frame that is closer to the window frame with bolts and nuts welded to the module outer frame, so that the inward horizontal part approaches the window frame And press the inner edge of the airtight sheet with the clamp against the horizontal part of the flange with the presser plate interposing the rubber plate for height adjustment.The gap between the adsorbent module and the window frame is sealed.
  Another adsorbent module sealing device according to the present invention uses a shelf floor and a column of an entrance / exit portion of the module storage chamber to connect one end portion of the bellows-like sheet to the entrance / exit portion of the module storage chamber via a pressing plate. Attached to the shelf floor and struts, the auxiliary frame is attached to the struts in a protruding shape, one end of the bellows type sheet is attached to the auxiliary frame with bolts and nuts, via the press plate, while the other end of the bellows type sheet is attached, Attach to the outer frame of the module with a fastener. At this time, attach the pressing frame to the other end of the bellows-type sheet with a bolt and nut through the presser plate, and seal the inner surface of the end of the module outer frame closer to the entrance / exit. The pressing frame attached to the inner edge of the bellows-like sheet is pressed against the packing attached to the end of the module outer frame, and the inner surface of the pressing frame is fixed to the module outer frame. A lever hooking and locking piece, is characterized in providing a fastener for fixing against the pressing frame to the module chassis.
[0015]
  Still another adsorbent module sealing device according to the present invention uses a shelf floor and a column of an entrance / exit portion of the module storage chamber to connect one end portion of the bellows-like sheet to the entrance / exit portion of the module storage chamber via a pressing plate. The auxiliary frame is attached to the support column in a protruding manner, and one end of the bellows type seat is attached to the auxiliary frame with bolts and nuts via a holding plate, while the other end of the bellows type sheet is attached to the auxiliary frame. Attach to the module outer frame with a clamp. At this time, on the inner side of the end of the module outer frame close to the entrance / exit part, attach a flange with an inverted L-shaped cross section with bolts and nuts welded to the module outer frame, The other end portion of the bellows-like sheet is pressed against the horizontal portion of the flange with a pressing plate by a clamp, and a rubber plate is interposed between the horizontal portion of the flange and the other end portion of the bellows-like sheet. It is.
[0016]
  In the case of a window frame, the gap between the window frame and the module outer frame is fixed, whereas in the case of a bellows-like sheet, the gap is flexible, so that the sealing work can be easily performed.
[0017]
  FIG. 1 shows the configuration of the adsorbent module.
[0018]
  First, in FIG. 1 (a), an adsorbent honeycomb having a length (A) of 0.15 m, a width (B) of 0.15 m, and a length (C) of 0.4 m is prepared, as shown in FIG. 1 (b). Nine adsorbents (1) are arranged in three horizontal rows and stacked in three rows, and these adsorbents (1) are accommodated inside a square steel storage frame (2) made of stainless steel plate. An adsorbent block having a length (A) of 0.45 m, a width (B) of 0.45 m, and a length (C) of 0.4 m is obtained. Although not shown in the figure, glass paper or the like made of nonflammable fibers is used as a gas seal material or cushion material between the adsorbents (1) and between the adsorbent (1) and the storage frame (2). May be included. Then, as shown in FIG. 1 (c), six adsorbent blocks (3) are stacked in two horizontal rows and three tiers, and these adsorbent blocks (3) are placed in a rectangular tube-shaped storage frame made of steel plate, that is, an outer frame. (4) The adsorbent module (5) having a length (A) of 1.4 m, a width (B) of 0.9 m, and a length (C) of 0.5 m is obtained. In this case as well, although not shown, glass paper or the like made of incombustible fibers is used as a gas sealant between the adsorbent blocks (3) and between the adsorbent blocks (3) and the outer frame (4). Or you may swallow it as a cushioning material.
[0019]
  2 (a) and 2 (b) show an example of a nitrogen dioxide adsorption / removal device installed in an underground space adjacent to a road tunnel. The adsorption / removal device (10) includes a reactor (11) in which ventilation gas from a road tunnel flows horizontally, and an electric dust collector installed on the ventilation gas inlet (11A) side in the reactor (11) ( 12) and a plurality of adsorbent modules (5) installed on the ventilation gas outlet (11B) side in the reactor (11). The plurality of adsorbent modules (5) are arranged in a zigzag shape as viewed from the plane so as to cross the inside of the reactor (11). Each straight section in a zigzag arrangement is a four-tier shelfFloorIt consists of 36 adsorbent modules (5) which are packed in a shelf (13) and are arranged in 3 rows vertically and 3 rows horizontally in each stage.
[0020]
  The shelves (13) containing a plurality of adsorbent modules (5) are arranged in a zigzag shape because the linear velocity of the gas passing through the adsorbent honeycomb in the adsorbent module (5) is slowed to reduce the pressure loss. This is a contrivance for lowering, and when there is a margin in the allowable pressure loss, it is not always necessary to arrange in a zigzag shape, and it may be arranged so that the equipment volume becomes more compact.
[0021]
  The nitrogen dioxide adsorbent is carried in, for example, as shown in FIG. First, the adsorbent module (5) manufactured and modularized at the adsorbent manufacturing factory is transported to the installation site of the nitrogen dioxide adsorption removal device (10) by a truck or the like, and the crane truck is transported from the ground inlet (14). (15) Alternatively, use a gate crane or the like to lower it onto the electric lifter (16) placed on the floor of the underground space. Next, the adsorbent module (5) is transported to the reactor (11) side by the electric lifter (16), and the adsorbent module (5) is lifted up to a predetermined height, and the module storage chamber (13 ). 3 shows the case where the adsorbent module (5) is lowered to the electric lifter (16). However, the adsorbent module is mounted on an automatic traveling carriage that runs on rails arranged along the side of the reactor. After loading and transporting to the reactor side, the adsorbent module is raised to the predetermined height together with the carriage, and then the adsorbent module is moved by the automatic traveling carriage that runs on the rail placed in the module storage chamber in the reactor. It is also possible to adopt an automatic carry-in system for carrying and filling the predetermined position.
[0022]
  The sealing device after the adsorbent module (5) is filled in the module storage chamber in the reactor (11) will be described.
[0023]
  As illustrated in FIG. 4, the module housing chamber for housing the plurality of adsorbent modules (5) includes a plurality of columns (18), a four-level shelf (17) supported over these, and a shelf ( 17) It consists of a pair of module support bases (19) mounted on the length direction on it. In order to fill the adsorbent module (5) into the module housing chamber, it is placed at a predetermined position on the support base (19) of each stage. It is difficult to place the adsorbent modules in close contact with each other, and the adsorbent modules are installed at a certain interval. In such a case, as shown in FIG. 5, a square-shaped window frame (20) is provided in an inward protruding shape by the shelf floor (17) and the support column (18) at the processing gas inlet / outlet portion of the module housing chamber. The window frame (20) is used to seal the gap between the adsorbent modules (5) and the gap between the adsorbent module and the module housing chamber.
[0024]
  Adsorbent module so that the rear end of the outer frame (4) of the adsorbent module (5) exits at the same position as the window frame (20) (see Fig. 6 (a)) or upstream from the window frame (20). By installing (5), the space between the adsorbent module (5) and the window frame (20) is sealed. However, to do this, it is necessary to install the window frame (20) after installing the adsorbent module (5), or to install the adsorbent module (5) through the window frame, which is difficult to work. Not practical.
[0025]
  Therefore, in order to place the adsorbent module (5) in the module housing chamber to which the window frame (20) is attached in advance, the window frame (20) is positioned downstream of the rear end of the module outer frame (4), The window frame (20) and the module outer frame (4) are arranged at a fixed interval (see FIG. 6 (b)).
[0026]
  In such a case, it is desirable to seal the gap efficiently and easily.
[0027]
  The window frame (20) is fixed by the shelf floor (17) and the support column (18) at the processing gas inlet / outlet part of the module storage chamber.If the window opening of the window frame (20) is sealed, the module storage chamber is The structure is sealed to prevent leakage. By sealing the gap between the window frame (20) and the module outer frame (4) in this way, a complete seal can be achieved as a whole.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
  First, the adsorbent module (5) is filled into a predetermined position in the module housing chamber. Specifically, in FIGS. 4 to 6, the adsorbent module (5) is a support base (19) made of, for example, H-shaped steel for installing the adsorbent module arranged on each shelf (17) in the module housing chamber. It is filled in the longitudinal direction above and is arranged at a predetermined position on the support base (19). The adsorbent module (5) is installed at a certain distance from the adsorbent module (5) installed immediately before. If there is a column (18) between the adsorbent module (5) and the adsorbent module (5), remove the column (18) and install the adsorbent module (5).
[0029]
  When filling the adsorbent module (5) onto the support (19), the adsorbent module (5) is placed between the adsorbent module (5) and the upper shelf (17) for filling and unloading. A certain space is required. A space is also required between a certain adsorbent module (5) and its upper or lower adsorbent module (5). Therefore, the adsorbent module (5) is not placed in contact with the adsorbent module (5) installed immediately before.
[0030]
  In this way, the adsorbent module (5) is installed with a vertical and horizontal spacing with respect to the cross section of the process gas inflow, and the window frame (20) is attached using the shelf floor (17) and the column (18). Then, using this window frame (20), the adsorbent modules (5) and the gaps between the adsorbent modules (5) and the shelf floor (17) and the column (18) are sealed.
[0031]
  On the other hand, as a method of placing the adsorbent modules (5) in contact with each other without any gap, a filling method in which a sealant is wound around the adsorbent module (5) and the adsorbent modules with the sealant (5) are stacked. Alternatively, the adsorbent modules (5) are stacked, and the adsorbent modules (5) and the gaps around the adsorbent modules (5) are filled with a sealing material.
[0032]
  However, an adsorbent module (5) with a height of 1.4 m, a width of 0.9 m, and a length of 0.5 m is placed in a module housing room with a width of 20 m and a height of 7 m. These methods are not practical because it is very difficult to prevent the adsorbent modules (5) stacked simply by stacking, earthquakes, etc. from being used and not falling apart, and problems remain in safety.
[0033]
  A specific example of the sealing device after the adsorbent module (5) is filled in the module housing chamber of the shelf to which the window frame (20) is previously attached will be shown.
[0034]
Example 1
  In FIG. 7, a sheet made of an airtight material such as a mouth shape, for example, an outer edge of a rubber sheet (31) is pressed against the inner edge of the entrance / exit part of the window frame (20) with a presser plate (32). Attach to the window frame (20) with the bolt (33) and nut (34) welded to 20). On the other hand, a pressing frame (35) is attached to the inner edge of the rubber sheet (31) with a bolt and nut (37) through a pressing plate (36).
[0035]
  At the end of the module outer frame (4) closer to the window frame (20), a sealing material, such as a rubber packing (38), is attached so as to wrap the end of the outer frame (4). The pressing frame (35) attached to the inner edge of the rubber sheet (31) is pressed against the rubber packing (38) attached to the end of the module outer frame (4), so that the adsorbent module (5) and the window frame (20 ) Seal the gap.
[0036]
  On the inner surface of the pressing frame (35), hook the locking piece (40) to the fixing claw (39) attached to the module outer frame (4) and use the lever (41) to attach the pressing frame (35) to the module outer frame. It is desirable to provide a fastener (42) that is pressed and fixed to (4).
[0037]
  The presser plates (32) and (36) are usually in the form of a long flat plate. In this shape, the frame may be bent because the plate thickness is thin. In this case, deformation of the frame can be reduced by making the holding plates (32) and (36) L-shaped in cross section. In order to prevent the frame from being bent, the presser plates (32) and (36) may be divided into two to four straight frame members instead of the mouth-shaped integral frame.
[0038]
  When a nut is used as described above, it cannot be tightened by hand, and a tool such as a spanner or a retin is required. Therefore, if a wing nut is used instead of a nut, it can be tightened or loosened by hand, and the work of attaching and detaching the sheet becomes easy.
[0039]
  In addition, as shown in FIG. 8, without holding the bolts to the window frame (20), the presser comprising a lever (52) that presses the presser plate (32) onto the window frame (20) with the tip tapered protrusion (51). By attaching the jig (53) to the window frame (20), place the presser plate (32) on the rubber sheet (31) and turn the lever (52) to press the presser plate (32) and The sheet (31) can also be fixed to the window frame (20). In this case, it is easy to attach and remove the seat.
[0040]
  For positioning of the rubber sheet (31) placed on the window frame (20), as shown in FIG. 9, a positioning pin (54) is attached to the window frame (20), and the rubber sheet (31 ) Holes (55) may be aligned.
[0041]
  After the rubber sheet (31) is firmly fixed to the window frame (20), if the inner edge of the rubber sheet (31) is fixed to the adsorbent module (5), the sheet may become loose, and the window frame (20 It is necessary to fix the rubber sheet (31) to the window frame (20) again after loosening the bolts on the) side and correcting the slack.
[0042]
  Therefore, the pin insertion hole (55) is a long hole that is long in the direction (A) indicated by the arrow in FIG. 9 (the direction in which the sheet is pulled during fixing). First, the window frame (20) side of the sheet is temporarily fixed. The inner edge of the rubber sheet (31) is fixed to the adsorbent module (5). At this time, the rubber sheet (31) is corrected by the long hole (55) so that the slack is reduced, and then the outer edge of the sheet is fixed to the window frame (20).
[0043]
Example 2
  In FIG. 10, a flange (44) having an inverted L-shaped cross section is provided on the inner surface of the end of the module outer frame (4) closer to the window frame (20) via a rubber packing (43) as necessary. ) Are attached with bolts (45) and nuts (46) welded to the module outer frame (4), and the inward horizontal portion is as close as possible to the window frame (20).
[0044]
  Next, the inner edge portion of the rubber sheet (31) is pressed against the horizontal portion of the flange (44) by the clamp plate (47) with the presser plate (47). If the horizontal part of the flange (44) and the window frame (20) are not in the same plane, a rubber plate (48) for height adjustment is interposed between the horizontal part and the inner edge of the rubber sheet (31). It is good.
[0045]
  In order to seal the gap between the adsorbent module (5) and the flange (44), a sealing material (packing or the like) is put in the gap. After installing the adsorbent module (5), if the integral flange (44) is attached to the adsorbent module (5), sealing becomes difficult, and the flange (44) is not integral for sealing. It is necessary to divide into 2 to 4 members. The division of the flange (44) is preferably performed not at the corner portion but at the straight portion from the corner portion so as to facilitate sealing of the gap at the flange connecting portion (see FIG. 11). In this case, as shown in FIG. 12, the gap between the flange connection portions is an adhesive tape made of an airtight material from the back side of the flange (44), for example, an adhesive tape made of a metal foil such as stainless steel or aluminum and an adhesive layer ( 56) can be attached and sealed easily.
[0046]
  In order to fix the flange (44) to the module outer frame (4), the bolt insertion hole (55) opened in the vertical portion of the flange (44) is formed into a long hole as shown in FIG. The flange (44) is moved so that the horizontal portion of 44) is as close as possible to the same plane as the window frame (20). Also, the flange (44) is easily tightened by hand with a wing nut (57) instead of a normal nut. Thus, the position of the flange (44) can be easily adjusted with good workability.
[0047]
  Other configurations are substantially the same as those of the first embodiment.
[0048]
  Thus, the gap between the adsorbent module (5) and the window frame (20) is sealed.
[0049]
Example 3
  In FIG. 14, one end portion of the bellows-like sheet (61) made of an airtight material is attached to the holding plate (62) using the shelf floor (17) and the support column (18) at the entrance / exit of the module storage chamber. It is attached to the shelf floor (17) and the support column (18) of the entrance / exit part of the module storage chamber via
[0050]
  The example shown in FIG. 14 uses the H-shaped steel of the support column (18). If the horizontal width of the H-shaped steel is narrow to attach one end of the bellows-like sheet (61) directly to the column (18), the auxiliary frame (63) is projected on the column (18) as shown in the figure. Attach one end of the bellows type seat (61) to the auxiliary frame (63) with bolts and nuts (64) through the presser plate (62).
[0051]
  On the other hand, the other end portion of the bellows-like sheet (61) is attached to the module outer frame (4) with the fastener (42) as in the configuration of FIG. 7 (b) described in the first embodiment. That is, the pressing frame (35) is attached to the other end of the bellows type sheet (61) with the bolt and nut (37) through the pressing plate (36). A sealing material, such as a rubber packing (38), is attached to the inner side surface of the end portion of the module outer frame (4) closer to the entrance / exit portion so as to wrap the end portion of the outer frame (4). The pressing frame (35) attached to the inner edge of the bellows-like sheet (61) is pressed against the rubber packing (38) attached to the end of the module outer frame (4).
[0052]
  On the inner surface of the pressing frame (35), hook the locking piece (40) to the fixing claw (39) attached to the module outer frame (4) and use the lever (41) to attach the pressing frame (35) to the module outer frame. It is desirable to provide a fastener (42) that is pressed and fixed to (4).
[0053]
  Other configurations are substantially the same as those of the first embodiment.
[0054]
  Thus, the gap between the adsorbent module (5) and the module housing chamber is sealed.
[0055]
Example 4
  In FIG. 15, one end of the bellows-like sheet (61) made of an airtight material is attached to the holding plate (62) using the shelf floor (17) and the support column (18) at the entrance / exit of the module storage chamber. It is attached to the shelf floor (17) and the column (18) of the entrance / exit part of the module storage chamber via
[0056]
  The example shown in FIG. 15 uses the H-shaped steel of the strut (18), but the horizontal width of the H-shaped steel is narrow to attach one end of the bellows-like sheet (61) directly to the strut (18). In this case, as shown in the figure, the auxiliary frame (63) is attached to the support column (18) so that it protrudes, and one end of the bellows-type seat (61) is pressed against the auxiliary frame (63) with bolts and nuts (64). Install via plate (62).
[0057]
  On the other hand, the other end portion of the bellows-like sheet (61) is attached to the module outer frame (4) with the clamp (49) in the same manner as the configuration of FIG. 10 (b) described in the second embodiment. That is, a flange (44) having an inverted L-shaped cross section is provided on the inner side surface of the end of the module outer frame (4) closer to the inlet / outlet portion via a rubber packing (43) as necessary. Install with bolts (45) and nuts (46) welded to (4).
[0058]
  Next, the other end portion of the bellows-like sheet (61) is pressed against the horizontal portion of the flange (44) by the clamp plate (47) with the presser plate (47). A rubber plate (48) with good adhesion may be interposed between the horizontal portion of the flange (44) and the other end of the bellows-like sheet (61).
[0059]
  The flange (44) may be attached to the module outer frame (4) by welding or bending in advance, and after the adsorbent module is filled in the module housing chamber, the one closer to the inlet / outlet part of the module outer frame (4) A flange (44) may be attached to the inner side of the end portion. When attaching the flange (44) after filling the adsorbent module, a rubber packing (43) or the like is inserted between the module outer frame (4) and the flange (44) as necessary, as illustrated.
[0060]
  Other configurations are substantially the same as those of the first embodiment.
[0061]
  Thus, the gap between the adsorbent module (5) and the module housing chamber is sealed.
[0062]
【The invention's effect】
  The sealing device according to the present invention is capable of sealing after the adsorbent module is installed in the module housing chamber, and the sealing place is a seal between the window frame and the adsorbent module or a bellows-like sheet and a shelf floor at the entrance / exit of the module housing chamber. In addition, it can be limited to the seal with the support column, and can be easily sealed, and the workability can be improved.
[0063]
  Thus, the gap between the adsorbent modules and the gap between the adsorbent module and the module housing chamber can be easily and effectively sealed.
[Brief description of the drawings]
FIG. 1 (a) is a perspective view showing an adsorbent honeycomb, FIG. 1 (b) is a perspective view showing an adsorbent block, and FIG. 1 (c) is a perspective view showing an adsorbent module.
FIGS. 2 (a) and 2 (b) are a horizontal sectional view and a vertical sectional view showing a nitrogen dioxide adsorption / removal device installed in an underground space adjacent to a road tunnel.
FIG. 3 is a vertical sectional view showing a state in which an adsorbent is carried into a nitrogen dioxide adsorption / removal device.
FIG. 4 (a)FIG. 3 is a front view illustrating a module housing chamber that houses a plurality of adsorbent modules. FIG. (b) FIG. 3 is a partially cutaway side view illustrating the module housing chamber.
FIG. 5 is a front view showing a state in which a window frame is provided in the module housing chamber.
FIG. 6 (a) andFIG. (b)FIG. 5 is a partially cutaway side view showing the positional relationship between the window frame and the module outer frame.
7 (a) is a plan view showing the sealing device of Example 1, FIG. 7 (b) is a sectional view taken along line bb in FIG. 7 (a), and FIG. It is sectional drawing which follows the cc line in FIG.7 (b).
8 (a) is a plan view showing a modified example of rubber sheet attachment, and FIG. 8 (b) is a cross-sectional view taken along the line bb in FIG. 8 (a).
9 (a) is a plan view showing an example of alignment of rubber sheets, and FIG. 9 (b) is a sectional view taken along line bb in FIG. 9 (a).
FIG. 10 (a) is a plan view showing a sealing device of Example 2, and FIG. 10 (b) is a cross-sectional view taken along line bb in FIG. 10 (a).
FIGS. 11 (a), 11 (b) and 11 (c) are plan views showing an example of dividing the flange.
12 (a) is a plan view showing a flange connection example, and FIG. 12 (b) is a cross-sectional view taken along line bb in FIG. 12 (a).
13 (a) is a vertical sectional view showing an example of fixing the flange to the module outer frame, and FIG. 13 (b) is a sectional view taken along line bb in FIG. 13 (a).
FIG. 14 is a vertical cross-sectional view showing a sealing device according to a third embodiment.
FIG. 15 is a vertical cross-sectional view showing a sealing device of Example 4.
16 (a) is a vertical sectional view of an adsorber showing the prior art, and FIG. 16 (b) is a sectional view taken along line bb in FIG. 16 (a).
FIG. 17 (a) is a vertical sectional view of an adsorber showing the prior art, and FIG. 17 (b) is a sectional view taken along line bb in FIG. 17 (a).
[Explanation of symbols]
  4: Module outer frame
  5: Adsorbent module
11: Reactor
17: Multi-level shelf
18: Prop
20: Window frame
31: Rubber sheet (airtight sheet)
32: Presser plate
33: Bolt
34: Nut
35: Pressing frame
36: Presser plate
37: Bolts and nuts
38: Packing
39: Fixed nail
40: locking piece
41: Lever
42: Fastener
44: Flange with inverted L-shaped cross section
45: Bolt
46: Nut
47: Presser plate
48: Rubber plate for height adjustment
49: Clamp
51: Tip taper protrusion
52: Lever
53: Presser jig
54: Pin for alignment
55: Bolt insertion hole
61: Bellows-like sheet
62: Presser plate
63: Auxiliary frame
64: Bolts and nuts

Claims (8)

Each of the module storage chambers of the multi-stage shelf arranged in the reactor (11) is filled with the adsorbent module (5), and the module storage chamber for storing the plurality of adsorbent modules (5) includes a plurality of support columns (18 ) And a multi-stage shelf (17) supported across these, and the adsorbent module (5) is installed at both vertical and horizontal intervals with respect to the cross section of the process gas inflow, and the shelf (17 ) And support column (18) are used to attach the window frame (20), and the window frame (20) is used to connect the adsorbent modules (5) to each other and the adsorbent module (5) with the shelf floor (17) and the support column. In the adsorber that seals the gap with (18), the outer edge of the mouth-shaped airtight sheet (31) is pressed against the inner edge of the entrance / exit part of the window frame (20) with the presser plate (32). Attach to the window frame (20) with bolts (33) and nuts (34) welded to 20), and attach the pressing frame (35) to the inner edge of the airtight sheet (31) via the presser plate (36). Attach the packing (38) to the end of the module outer frame (4) closer to the window frame (20), and press the pressing frame (35) against the packing (38). agent to seal the gap between the module (5) and window frame (20), on the inner surface of the pressing frame (35), the locking piece (40) to the fixed claw (39) attached to the module outer frame (4) A sealing device for an adsorbent module, characterized in that a fastener (42) is provided to fix the pressing frame (35) against the module outer frame (4) by hooking the lever (41).   Without welding bolts to the window frame (20), a holding jig (53) consisting of a lever (52) that presses the holding plate (32) to the window frame (20) with the tip protrusion (51) is attached to the window frame (20). 20), place the presser plate (32) on the airtight sheet (31), turn the lever (52) and press the presser plate (32) to attach the airtight sheet (31) to the window frame (20). The adsorbent module sealing device according to claim 1, wherein the adsorbent module sealing device is fixed.   The adsorbent module sealing device according to claim 1 or 2, characterized in that the holding plates (32), (36) are L-shaped in cross section.   In order to align the airtight sheet (31) placed on the window frame (20), an alignment pin (54) is attached to the window frame (20), and the hole (55) of the airtight sheet (31) is attached to this pin. The adsorbent module sealing device according to any one of claims 1 to 3, wherein the adsorbent module sealing device is combined. Each of a plurality of modules receiving chambers of the multistage shelf disposed in the reactor (11) filled with an adsorbent module (5), the module housing chamber for housing a plurality of adsorbent module (5) comprises a plurality of struts (18 a), and a shelf floor of a multi-stage, supported over these (17), the adsorbent module (5) for the inflow cross-section of the processing gas, placed at intervals both vertically and horizontally, Tanayuka (17 ) and fitted with a window frame (20) by using a post (18), the adsorbent module (5 by utilizing the window frame (20)) and between the adsorbent module (5) and Tanayuka (17) and struts in adsorber which seals the gap (18), the inner edge of the inlet and outlet part of the window frame (20), pressed by the outer edge of the pressing plate of the airtight sheet mouth-shaped (31) (32), the window frame ( It is attached to the window frame (20) with the bolt (33) and nut (34) welded to 20) , and the module outer frame (4) has an inverted cross-section L on the inner surface of the end portion closer to the window frame (20). Letter shape Attach the flange (44) with bolts (45) and nuts (46) welded to the module outer frame (4) so that the inward horizontal part approaches the window frame (20). The inner edge is pressed by the clamp (49) against the horizontal part of the flange (44) with the rubber plate (48) for height adjustment interposed between the presser plate (47) and the adsorbent module (5) and the window frame (20 wherein the seal to Rukoto the gap), the sealing device of adsorbents module.   In order to fix the flange (44) to the module outer frame (4), the bolt insertion hole (55) opened in the vertical part of the flange (44) is a long hole, and the horizontal part of the flange (44) is the window frame. The sealing device for an adsorbent module according to claim 5, wherein the flange (44) is moved so as to be close to the same plane as (20).   Using the shelf (17) and the column (18) at the entrance and exit of the module storage chamber, one end of the bellows-like sheet (61) is connected to the shelf at the entrance and exit of the module storage chamber via the presser plate (62). (17) and the column (18), the auxiliary frame (63) is attached to the column (18) in a protruding manner, and one end of the bellows type seat (61) is attached to the auxiliary frame (63) with bolts and nuts (64). The other end of the bellows-like sheet (61) is attached to the module outer frame (4) with the fastener (42). At this time, the other part of the bellows-type sheet (61) is attached. Attach the pressing frame (35) to the end with bolts and nuts (37) through the holding plate (36), and attach the packing (38) to the inner side of the end of the module outer frame (4) that is closer to the entrance / exit. Attach the pressing frame (35) attached to the inner edge of the bellows-like sheet (61) to the packing (38) attached to the end of the module outer frame (4), and place it on the inner surface of the pressing frame (35). Outside the module A fastener (42) is provided that hooks the locking piece (40) to the fixing claw (39) attached to (4) and presses the pressing frame (35) against the module outer frame (4) with the lever (41). A sealing device for an adsorbent module.   Using the shelf (17) and the column (18) at the entrance and exit of the module storage chamber, one end of the bellows-like sheet (61) is connected to the shelf at the entrance and exit of the module storage chamber via the presser plate (62). (17) and the column (18), the auxiliary frame (63) is attached to the column (18) in a protruding manner, and one end of the bellows type seat (61) is attached to the auxiliary frame (63) with bolts and nuts (64). The other end of the bellows-like sheet (61) is attached to the module outer frame (4) with the clamp (49). At this time, the entrance / exit of the module outer frame (4) A flange (44) having an inverted L-shaped cross section is attached to the inner surface of the end portion closer to the portion with a bolt (45) and a nut (46) welded to the module outer frame (4), and a bellows-like sheet (61 ) With the holding plate (47) against the horizontal part of the flange (44) by the clamp (49), and between the horizontal part of the flange (44) and the other end of the bellows-like sheet (61). To interpose the rubber plate (48) The symptom, the sealing device of the adsorbent module.

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