CN115282769A - Portable SCR denitration tower catalyst installation device - Google Patents
Portable SCR denitration tower catalyst installation device Download PDFInfo
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- CN115282769A CN115282769A CN202210921098.9A CN202210921098A CN115282769A CN 115282769 A CN115282769 A CN 115282769A CN 202210921098 A CN202210921098 A CN 202210921098A CN 115282769 A CN115282769 A CN 115282769A
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- denitration tower
- rollers
- guide rails
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- 239000003054 catalyst Substances 0.000 title claims abstract description 140
- 238000009434 installation Methods 0.000 title claims abstract description 60
- 238000012423 maintenance Methods 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 67
- 239000010959 steel Substances 0.000 claims description 67
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to an auxiliary device of an SCR denitration tower. The purpose is to provide a portable SCR denitration tower catalyst installation device, and the device should be able to carry out the installation of catalyst under the condition that need not personnel and get into in the denitration tower to easy operation, installation are quick, efficiency is higher. The technical scheme is that the device is a portable SCR denitration tower catalyst installation device; the method is characterized in that: the device also comprises a plurality of fixed guide rails with rollers, a catalyst mounting support, at least one pair of movable guide rails with rollers, and a catalyst mounting box, wherein the fixed guide rails with rollers are horizontally arranged on the catalyst mounting support, the catalyst mounting support is detachably positioned on the denitration tower maintenance frame and is used for conveying a catalyst into the denitration tower, the movable guide rails with rollers are horizontally fixed on the catalyst mounting support and are used for being connected with the fixed guide rails, the catalyst mounting box is divided into a plurality of catalyst mounting cavities for containing the catalyst by a partition plate, and the bottom of the catalyst mounting cavity is provided with a pair of guide grooves which can be in rolling fit with the movable guide rails.
Description
Technical Field
The invention relates to an auxiliary device of an SCR (selective catalytic reduction) denitration tower, in particular to a portable SCR denitration tower catalyst installation device.
Background
Under the increasingly enhanced environment protection in China, a denitration system becomes an indispensable ring in the flue gas treatment systems of various power plants, and an SCR (selective catalytic reduction) furnace external denitration system is one of the most widely applied flue gas treatment modes with the highest denitration efficiency in various denitration systems.
When a conventional SCR denitration tower is designed, it is generally required to ensure that installation workers can be sufficiently accommodated between two layers of catalysts to enter the tower body for installation and construction, and a certain space is required to be reserved for hoisting the catalysts; the catalyst is generally arranged in a form of 2+1, that is, the catalyst is arranged in 2 layers by using 1 layer for standby, which determines that the design height of the conventional denitration tower is not low. However, the installation height of some projects is limited, the conventional arrangement mode cannot meet the design requirements, so that the space required by the catalyst hoisting work is compressed, and installers cannot enter the denitration tower to operate, thereby bringing difficulty to the installation work of the catalyst.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a portable SCR denitration tower catalyst installation device which can install a catalyst under the condition that personnel do not need to enter a denitration tower, and has the advantages of simple operation, quick installation and higher efficiency.
The technical scheme provided by the invention is as follows:
a portable SCR denitration tower catalyst installation device comprises a plurality of layers of catalyst installation frames which are arranged in a denitration tower and used for positioning a catalyst, and a denitration tower maintenance frame which is arranged outside the denitration tower;
the method is characterized in that: the device also comprises a plurality of fixed guide rails with rollers, a catalyst mounting support, at least one pair of movable guide rails with rollers, and a catalyst mounting box, wherein the fixed guide rails with rollers are horizontally arranged on the catalyst mounting support, the catalyst mounting support is detachably positioned on the denitration tower maintenance frame and is used for conveying a catalyst into the denitration tower, the movable guide rails with rollers are horizontally fixed on the catalyst mounting support and are used for being connected with the fixed guide rails, the catalyst mounting box is divided into a plurality of catalyst mounting cavities for containing the catalyst by a partition plate, and the bottom of the catalyst mounting cavity is provided with a pair of guide grooves which can be in rolling fit with the movable guide rails.
The fixed guide rail of each pair of rollers and the movable guide rail of each pair of rollers comprise two guide rails with rollers which are arranged in parallel at intervals, a plurality of rollers are arranged on each guide rail at intervals, and the axes of the rollers are parallel to each other and perpendicular to the length direction of the guide rails.
The catalyst installing support comprises a base, a connector and a two-layer support, wherein the base is formed by splicing a plurality of horizontally arranged steel pipes into a rectangle and is provided with a movable guide rail with a roller for conveying a catalyst installing box, the connector is arranged around the base, the bottom end of the connector is fixed with a section bar, and the two-layer support is detachably positioned on the connector and can be provided with the movable guide rail with the roller for conveying a high-layer catalyst.
The two-layer support comprises a plurality of vertical steel pipes, connecting pipes and a plurality of steel pipes, wherein the vertical steel pipes are vertically arranged, the bottom ends of the vertical steel pipes are supported by the connectors respectively, the connecting pipes are installed on the vertical steel pipes, and the steel pipes are inserted into the connecting pipes to be matched with the connecting pipes to form a movable guide rail with rollers.
And in the movable guide rail of each pair of rollers, the distance between the two guide rails is equal to the distance between the two guide rails in the fixed guide rail of each pair of rollers.
In the movable guide rail of each pair of rollers, one end of each guide rail is provided with a limiting strip for limiting the movement of the catalyst mounting box, and the other end of each guide rail is provided with a joint for connecting with the guide rail on the catalyst mounting frame.
The limiting strips are bosses which are turned upwards to prevent the catalyst mounting box from moving; the joint is an insertion piece which horizontally protrudes forwards to be inserted and matched with the end part of the fixed guide rail.
The connectors comprise a plurality of first connectors positioned at four corners of the base and a plurality of second connectors positioned in the middle of the base; the first connecting joint is formed by connecting three sleeves capable of inserting steel pipes, the axes of the three sleeves are respectively orthogonal to one point, and long sleeves are vertically arranged and used for being in inserted fit with the vertical steel pipes; the second connecting head is formed by connecting three sleeves which can be inserted with steel pipes and are horizontally arranged in the axis direction, wherein the axes of the two short sleeves are collinear and are vertical to the axis of the other short sleeve, and the long sleeve is vertically arranged and is used for being in inserting fit with the vertical steel pipe.
The connector and the connecting pipe are respectively provided with a reinforcing sleeve which can be matched with the reinforcing steel pipe in an inserting and embedding manner in an inclined manner so as to form a stable triangular structure.
The catalyst installation cavity is a cylindrical cavity with a rectangular cross section and is vertically arranged, and an opening of the cylindrical cavity faces upwards.
The length direction of the guide groove is parallel to the axis of the roller.
The invention has the beneficial effects that: according to the invention, the catalyst can be arranged on the preset position of the fixed guide rail in the denitration tower from the outside of the denitration tower through the provided catalyst mounting bracket and the guide rail matched with the catalyst mounting box, so that an installer does not need to enter the denitration tower for operation; the catalyst install bin that provides, the mounting groove that the bottom was disposed can cooperate with fixed guide and the movable guide who takes the gyro wheel, can also guarantee the whole rigidity of catalyst install bin, makes the catalyst form a whole module. In addition, the invention has simple operation, quick installation and higher efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a denitration tower with an overhaul support in a front view in the embodiment of the invention.
FIG. 2 is a schematic diagram showing the structure of the denitration tower shown in FIG. 1 in a right view (a catalyst installation device is shown).
Fig. 3 is a schematic view showing the connection relationship of the catalyst mounting box positioned on the fixed guide rail with the roller on each layer in fig. 1.
Fig. 4 is a schematic view showing the connection relationship between the fixed guide rail with the roller and the catalyst installation box positioned on the fixed guide rail of each layer in fig. 2.
Fig. 5 is a schematic top view of the fixed rail with rollers of fig. 3.
Fig. 6 is an enlarged schematic view of a portion a in fig. 4.
Fig. 7 is an enlarged schematic view of the catalyst mounting bracket of fig. 2.
Fig. 8 is a schematic view of the structure in the right-view direction of fig. 7.
Fig. 9 is a schematic top view of the structure of fig. 7.
Fig. 10 is a schematic view of the catalyst mounting bracket of fig. 8 in an exploded state (with the upper member of the base removed).
Fig. 11 is an enlarged schematic structural view of the catalyst installation case in fig. 1.
Fig. 12 is a structural diagram in the right-view direction of fig. 11.
Fig. 13 is a schematic top view of fig. 11.
Fig. 14 is a front view schematically illustrating a first connector according to an embodiment of the present invention.
Fig. 15 is a schematic right-view structural diagram of the first connector in the embodiment of the present invention.
Fig. 16 is a schematic top view of the first connector according to the embodiment of the present invention.
Fig. 17 is a schematic front view of a second connecting head according to an embodiment of the present invention.
Fig. 18 is a schematic right-view structural diagram of the second connecting head in the embodiment of the present invention.
Fig. 19 is a schematic top view of the second connecting head according to the embodiment of the present invention.
FIG. 20 is a schematic front view showing the structure of the first upright steel pipe in the example of the present invention.
Fig. 21 is a schematic top view of the first upright steel pipe in the embodiment of the present invention.
Fig. 22 is a front view structural schematic diagram of the second upright steel pipe in the embodiment of the invention.
Fig. 23 is a schematic top view of the second upright steel pipe in the embodiment of the present invention.
Reference numbers in the figures: 1. a denitration tower; 2. a fixed guide rail with a roller; 3. a catalyst mounting bracket; 3.1, cushion blocks; 3.2, connecting heads; 3.21, long sleeve; 3.22, a first short sleeve; 3.23, a second short sleeve; 3.24, a reinforcing sleeve; 3.25, horizontally reinforcing the sleeve; 3.26, a third short sleeve; 3.27, horizontal short pipes; 3.3, erecting a steel pipe; 3.31, small tube; 3.32 horizontally arranged short pipes; 3.33, connecting short pipes; 3.34, downward reinforcement sleeve; 3.35, horizontal strengthening short pipes; 3.4, steel pipes; 3.5, a two-layer support; 3.6, a base; 4. a catalyst installation box; 4.1, a catalyst mounting cavity; 5. a roller; 6. hoisting a hoist; 7. a movable guide rail with a roller; 8. a joint; 9. a limiting strip; 10. denitration tower overhauls frame.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following examples
A flue gas inlet is formed in the bottom of the denitration tower shown in fig. 1 and 3, a flue gas outlet is formed in the top of the denitration tower, and the cross section of the denitration tower is rectangular; a flue gas flow equalizing mechanism and a catalyst mounting frame (comprising a standby catalyst mounting frame, a lower catalyst mounting frame and an upper catalyst mounting frame from bottom to top) are arranged in the inner cavity of the denitration tower from bottom to top; and a catalyst is arranged on each layer of catalyst mounting frame. An openable access door is arranged on the wall of the denitration tower corresponding to each layer of the catalyst mounting frame and used for periodic replacement of the catalyst (the replacement period is usually 2-3 years). A denitration tower overhaul frame 11 for overhaul and maintenance is arranged outside the denitration tower, and a hoisting hoist 6 for hoisting heavy objects is arranged on the overhaul frame; the hoisting hoist can move to the outer side of the overhaul frame along a horizontal guide rail fixed on the denitration tower overhaul frame, so that a heavy object is directly hoisted to a desired height.
The above is the prior art.
In order to overcome the defect that the catalyst needs to be manually put into the denitration tower during installation and replacement, the invention is improved as follows:
firstly, a plurality of fixed guide rails with rollers are arranged on each layer of catalyst mounting rack in the denitration tower; FIG. 1 shows three layers of catalyst mounting racks, each equipped with four fixed guide rails with rollers; each fixed guide rail with the rollers comprises two fixed guide rails 2 which are arranged in parallel at intervals; a plurality of rollers 5 are arranged on each fixed guide rail at intervals (see fig. 3, 4 and 6); the fixed guide rail is a channel steel 2.2 with an upward notch, and a plurality of openings penetrating through the width direction of the channel steel are transversely formed along the length direction of the channel steel; the roller is embedded into the channel steel, and simultaneously, the roller shafts 2.1 protruding from two sides of the roller are respectively embedded into the opening from top to bottom, so that the top end of the roller is higher than the top end of the channel steel, and a track capable of supporting the catalyst installation box 4 is formed; the axes of the rollers are parallel to each other and vertical to the length direction of the fixed guide rail; the catalyst installation box can transversely move to a specified position in the denitration tower along the rollers. The fixed guide rails with the rollers can be installed at one time when the denitration tower is built, so that subsequent installation and replacement of the catalyst are facilitated.
The catalyst installation box matched with the fixed guide rail with the roller is arranged; in the catalyst installation box shown in fig. 11 to 13, the middle part is divided into a plurality of catalyst installation cavities 4.1 by partition plates, each catalyst installation cavity is a cylindrical cavity with a rectangular section (or other sections such as hexagon and triangle) and vertically arranged, and the opening of the cylindrical cavity faces upwards so as to facilitate the insertion or replacement of the catalyst; the bottom of the catalyst installation box is horizontally provided with a pair of guide grooves 4.2 (preferably welded and fixed), the distance between the two guide grooves is equal to the distance between the two fixed guide rails in each pair of fixed guide rails with rollers (the length direction of the guide grooves is perpendicular to the axes of the rollers), so that the catalyst installation box can be matched with the rollers on the guide rails (the rollers can be embedded and matched with the guide grooves), the catalyst installation box can easily roll on the fixed guide rails with the rollers, and people do not need to enter the denitration tower for operation.
3. After the catalyst installation box is hoisted to the access door position of the denitration tower maintenance frame from the ground, the catalyst installation box still needs to enter the denitration tower from the denitration tower maintenance frame through the access door. For this purpose, the invention is also specially provided with a catalyst mounting bracket 3; the catalyst mounting bracket comprises a detachable base 3.6 and a two-layer support which is detachably positioned on the base; the distance between base and the bilayer support suits with the distance between the upper and lower floor's catalyst mounting bracket in the denitration tower to transport the catalyst on the upper and lower floor's catalyst mounting bracket respectively.
The base is formed by splicing a plurality of steel pipes 3.4 which are horizontally arranged, and the horizontal projection of the base is rectangular; the adjacent steel pipes are connected through the connecting heads 3.2 and fastening bolts (in a conventional connecting structure). Six connectors are shown in the figure (wherein, four corners are respectively provided with one connector, and the middle part of the longer side is provided with another connector) to form two connected smaller rectangles. A cushion block 3.1 is fixed at the bottom end of each connector and used for enhancing the rigidity of the base; the spacer may be a section bar such as an i-beam or channel (preferably an i-beam). The upper surface of the base is also provided with a pair of movable guide rails 7 (the movable guide rails with the rollers are omitted from the base in fig. 7) with rollers (preferably fixed by bolts to facilitate disassembly), the movable guide rails with the rollers comprise two movable guide rails 7, and the distance between the two movable guide rails is the same as that between the two fixed guide rails; the structure of each movable rail 7 is also substantially the same as the fixed rail structure.
The connectors comprise a plurality of (four are shown in figure 9) first connectors positioned at four corners of the base and a plurality of (two are shown in figure 9) second connectors positioned in the middle of the base. As can be seen from fig. 14 to 16: the first connecting joint is formed by connecting three sleeves (two first short sleeves 3.22 and a long sleeve 3.21), and the axes of the three sleeves are respectively orthogonal to one point (similar to a coordinate system); the two first short sleeves can be inserted into the steel pipe 3.4 and are connected with the steel pipe into a whole after being screwed into screw holes in the sleeves by screws to form the side edge of the base in the horizontal direction; the long sleeve 3.21 is vertically arranged, and a row of through holes are vertically formed in the long sleeve; each long sleeve can be vertically inserted with an upright steel pipe 3.3 (the bottom end of the upright steel pipe is welded and fixed with a small pipe 3.31, the lower part of the small pipe is inserted into the long sleeve, and a plurality of bolts transversely penetrate through the through holes of the long sleeve and the small pipe and are fastened by nuts to connect the upright steel pipe and the long sleeve into a whole). As can be seen from fig. 17 to 19: the structure of the second connector is that three second short sleeves 3.236 are arranged on the periphery of the bottom of the vertically arranged long sleeve 3.21; the axes of the three second short sleeves are all horizontally arranged, wherein the axes of the two second short sleeves are collinear and perpendicular to the axis of the other second short sleeve.
As can be seen from the figure: the upper parts of the six vertical steel pipes pass through (welded) connecting pipes respectively, and then are inserted and connected with a plurality of horizontally arranged steel pipes to form a two-layer support 3.5 serving as a horizontal supporting surface; a movable guide rail 7 with a pair of rollers is also horizontally arranged on the two-layer support. The six upright steel pipes with the connecting pipes are respectively four first upright steel pipes positioned at four corners of the bracket and two second upright steel pipes positioned in the middle of the bracket. As can be seen from fig. 20: the connecting pipe at the upper part of the first upright steel pipe is a short pipe 3.32 with two mutually vertical and horizontally arranged axes, and the height of the short pipe on the first upright steel pipe is determined according to the design requirement; as can be seen from fig. 21 and 22: the connecting pipe at the upper part of the second vertical steel pipe is a connecting short pipe 3.33 (the axes of the two short pipes are collinear) with three axes which are vertical to each other in pairs and are arranged horizontally, and the height of the short pipe on the second vertical steel pipe is determined according to the design requirement. Two ends of the steel pipe 3.4 are respectively inserted and fixed with the short pipes 3.32 of the two first vertical steel pipes to form short sides (the left side and the right side of the figure 9) between the two layers; two ends of the steel pipe are respectively inserted and embedded with the short connecting pipes 3.33 (the axes of the short connecting pipes are vertical to the other two short connecting pipes) of the two second vertical steel pipes to form a horizontal rod (a rod piece positioned in the middle of the figure 9) in the middle of the two layers of supports; one end of the steel pipe is respectively inserted and fixed with the short pipe 3.32 of the first vertical steel pipe, and the other end is inserted and fixed with the short connecting pipe 3.33 of the second vertical steel pipe to form a half of the long side between the two layers (the upper side and the lower side of the figure 9).
Furthermore, in order to increase the rigidity of the catalyst mounting bracket, a plurality of reinforcing steel pipes are also arranged. As can be seen from fig. 7 and 14: in the first connecting joint, an upward reinforcing sleeve 3.24 is welded and fixed upwards between the long sleeve and one of the short sleeves in an inclined manner (the inclined angle is determined according to the requirement), and is used for inserting and embedding and fixing one end of the reinforcing steel pipe; correspondingly, two downward reinforcing sleeves 3.34 which are obliquely arranged downwards are welded and fixed between the short pipe 3.33 at the upper part of the second vertical steel pipe and the second vertical steel pipe so as to be inserted and embedded into the other ends of the reinforcing steel pipes and fixedly matched with the other ends of the reinforcing steel pipes, and a stable triangular structure (a triangular structure in a vertical plane) between every two adjacent vertical steel pipes is formed together. In the first connecting joint, a horizontal reinforcing sleeve 3.25 (see fig. 16; the axes of the three sleeves are in the same horizontal plane) is welded and fixed between the two first short sleeves in an inclined manner (the inclined angle is determined according to the requirement) and is used for inserting and embedding and fixing one end of the reinforcing steel pipe; correspondingly, in the second connector, a horizontal short pipe 3.27 is also welded and fixed between every two third short sleeves in an inclined way and is used for inserting and fixing the other end of the reinforced steel pipe, so that a stable triangular structure of the base in a horizontal range is formed together (as can be seen from figure 9, a reinforced steel pipe is arranged at the diagonal of each small rectangle, and two ends of each reinforced steel pipe are connected to connecting heads at different positions through bolts to form the triangular structure); the lifting force of the base to the movable guide rail can be obviously enhanced. Naturally, the two-layer bracket is also provided with a reinforced steel pipe to form a triangular structure; as can be seen from fig. 21 and 23: horizontal reinforcing short pipes 3.35 are obliquely arranged between two horizontally arranged short pipes 3.32 in the first vertical steel pipe (the axes of the three short pipes are in the same horizontal plane), horizontal reinforcing short pipes 3.35 are also obliquely arranged between two short pipes 3.33 in the second vertical steel pipe, the axes of the three short pipes are also in the same horizontal plane, and after the horizontal reinforcing short pipes are respectively inserted and matched with two ends of the reinforcing steel pipe, the formed shape is as shown in figure 9 (in figure 9, the projection of the second-layer support is exactly overlapped with the projection of the base), and the lifting force of the second-layer support on the movable guide rail can be obviously enhanced.
In addition, the mounting mode of the movable guide rail with the rollers on the two layers of supports is the same as that of the movable guide rail with the rollers on the base, and the details are not described.
Further, the steel pipe, the vertical steel pipe, the short sleeve and the reinforcing steel pipe are all square pipes or round pipes. The invention recommends the use of square tubes. The steel pipe, the vertical steel pipe and the reinforced steel pipe are all fastened by bolts or screws after being inserted and embedded with the connectors and various sleeves (the fastening mode is the prior art).
Furthermore, each pair of fixed guide rails with the rollers and each pair of movable guide rails with the rollers respectively comprise two guide rails with the rollers which are arranged at intervals and are parallel to each other; a plurality of rollers are arranged on each guide rail at intervals, and the axes of the rollers are parallel to each other and perpendicular to the length direction of the guide rail.
Further, the distance between the two guide rails in the movable guide rail of each pair of belt rollers on the catalyst mounting bracket is equal to the distance between the two guide rails in the fixed guide rail of each pair of belt rollers on the catalyst mounting bracket.
In the movable guide rail with each pair of rollers, one end of each guide rail is provided with a limiting strip 9 (as can be seen from figure 7, the limiting strip is a boss which is turned upwards to prevent the catalyst installation box from moving), and the other end of each guide rail is provided with a joint 10 for connecting with a fixed guide rail on the catalyst installation frame (the joint is an insertion piece which horizontally protrudes forwards to be inserted and matched with the end part of the fixed guide rail); during installation, the connector is only required to be inserted into the end part of the fixed guide rail on the catalyst mounting frame, and the connection with the upper fixed guide rail can be realized.
Obviously, in the invention, the catalyst mounting bracket can be disassembled into various parts, lifted to a specified height of the denitration tower overhaul frame by a lifting hoist (an original device of the denitration tower overhaul frame), and then assembled; and simple structure installs fast.
The working principle of the invention is as follows: when the denitration tower needs to be installed or replaced with the catalyst, the decomposed components of the catalyst installation support are conveyed to the specified position of the denitration tower overhaul frame by using the hoisting hoists in batches from the ground; then opening the catalyst sealing door of the denitration tower, assembling the parts of the catalyst mounting support into a complete catalyst mounting support on the denitration tower overhaul frame, and aligning the movable guide rail with the roller wheels with the fixed guide rails in the denitration tower one by one to connect the rails. And finally, lifting the catalyst installation box filled with the catalyst to a catalyst installation support by a lifting hoist, and pushing the catalyst installation box into a catalyst installation frame in the denitration tower by an operator by hands (the catalyst installation box can be respectively sent to a standby catalyst installation frame and a lower catalyst installation frame through movable guide rails on the base, and the catalyst installation box can be sent to an upper catalyst installation frame through movable guide rails on the two layers of supports). After the installation is finished, the catalyst mounting bracket is disassembled again, and the catalyst mounting bracket is transported back to the ground by the hoisting block in batches.
Claims (10)
1. A portable SCR denitration tower catalyst installation device comprises a plurality of layers of catalyst installation frames which are arranged in a denitration tower and used for positioning a catalyst, and a denitration tower maintenance frame which is arranged outside the denitration tower;
the method is characterized in that: the device also comprises a plurality of fixed guide rails (2) with rollers, a catalyst mounting support (3), at least one pair of movable guide rails (7) with rollers, a catalyst mounting box (4), a plurality of catalyst mounting cavities (4.1) and a pair of guide grooves, wherein the fixed guide rails (2) are horizontally arranged on the catalyst mounting support, the catalyst mounting support is detachably positioned on the denitration tower overhauling support and used for conveying catalysts into the denitration tower, the movable guide rails (7) are horizontally fixed on the catalyst mounting support and used for being connected with the fixed guide rails and are divided into a plurality of catalyst mounting cavities (4.1) for containing the catalysts by partition plates, and the bottom of each movable guide rail is provided with the guide grooves which are matched with the movable guide rails in a rolling manner.
2. The portable SCR denitration tower catalyst installation apparatus of claim 1, wherein: each pair of fixed guide rails with the rollers and each pair of movable guide rails with the rollers comprise two guide rails with the rollers which are arranged in parallel at intervals, a plurality of rollers (5) are arranged on each guide rail at intervals, and the axes of the rollers are parallel to each other and perpendicular to the length direction of the guide rails.
3. The portable SCR denitration tower catalyst installation apparatus of claim 2, wherein: the catalyst installing support comprises a base (3.6) which is formed by splicing a plurality of horizontally arranged steel pipes into a rectangle and is provided with a movable guide rail with a roller for conveying a catalyst installing box, a connector (3.2) which is arranged around the base and is provided with a section bar at the bottom end, and a two-layer support (3.5) which is detachably positioned on the connector and can be provided with the movable guide rail with the roller for conveying high-layer catalyst.
4. The portable SCR denitration tower catalyst installation apparatus of claim 3, wherein: the two-layer support comprises a plurality of vertical steel pipes (3.3) which are vertically arranged and the bottoms of which are respectively supported by the connectors, connecting pipes which are arranged on the vertical steel pipes, and a plurality of steel pipes (3.4) which are inserted into the connecting pipes and matched with the connecting pipes to form movable guide rails with rollers.
5. The portable SCR denitration tower catalyst installation device of claim 4, wherein: and the distance between the two guide rails in the movable guide rail of each pair of belt rollers is equal to the distance between the two guide rails in the fixed guide rail of each pair of belt rollers.
6. The portable SCR denitration tower catalyst installation apparatus of claim 5, wherein: in the movable guide rail of each pair of rollers, one end of each guide rail is provided with a limiting strip (9) for limiting the movement of the catalyst mounting box, and the other end of each guide rail is provided with a joint (8) for connecting with the guide rail on the catalyst mounting frame.
7. The portable SCR denitration tower catalyst installation apparatus of claim 6, wherein: the limiting strips are bosses which are turned upwards to prevent the catalyst mounting box from moving; the joint is an insertion piece which horizontally protrudes forwards to be inserted and matched with the end part of the fixed guide rail.
8. The portable SCR denitration tower catalyst installation apparatus of claim 7, wherein: the connectors comprise a plurality of first connectors positioned at four corners of the base and a plurality of second connectors positioned in the middle of the base; the first connecting joint is formed by connecting three sleeves capable of inserting steel pipes, the axes of the three sleeves are respectively orthogonal to one point, and long sleeves (3.21) are vertically arranged and used for being in inserted fit with the vertical steel pipes; the second connector is formed by connecting three sleeves which can be inserted with steel pipes and are horizontally arranged, wherein the axes of the two short sleeves are collinear and are vertical to the axis of the other short sleeve, and the long sleeve is vertically arranged and is used for being inserted and matched with the upright steel pipe.
9. The portable SCR denitration tower catalyst installation apparatus of claim 8, wherein: and the connector and the connecting pipe are respectively obliquely provided with a reinforcing sleeve (3.24) which can be inserted and matched with the reinforcing steel pipe so as to form a stable triangular structure.
10. The portable SCR denitration tower catalyst installation apparatus of claim 9, wherein: the catalyst installation cavity is a cylindrical cavity with a rectangular cross section and is vertically arranged, and an opening of the cylindrical cavity faces upwards.
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| CN202210921098.9A CN115282769A (en) | 2022-08-02 | 2022-08-02 | Portable SCR denitration tower catalyst installation device |
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Cited By (1)
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| CN117101403A (en) * | 2023-10-24 | 2023-11-24 | 江苏星永邦环保工程技术有限公司 | Ultralow temperature denitration device of heating furnace |
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