CN113600597A - Method and device for separating and recovering active substances and base materials of flat-plate catalyst - Google Patents
Method and device for separating and recovering active substances and base materials of flat-plate catalyst Download PDFInfo
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- CN113600597A CN113600597A CN202110872066.XA CN202110872066A CN113600597A CN 113600597 A CN113600597 A CN 113600597A CN 202110872066 A CN202110872066 A CN 202110872066A CN 113600597 A CN113600597 A CN 113600597A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention discloses a method and a device for separating and recovering active substances and base materials of a flat-plate catalyst, wherein the method comprises the following steps: 1) fixing the flat-plate catalyst; 2) stretching the flat-plate catalyst; 3) collecting active substances; in the step 2), the pulling force can be slowly applied along the width direction, the length direction or the diagonal direction of the flat-plate catalyst until the base material deforms. The invention skillfully realizes the separation of the active substance and the base material by comprehensively considering the combination mode of the active substance and the base material of the flat-plate catalyst and the geometric characteristics of the base material by adopting a stretching method, creatively solves the problems that the base material and the active substance are difficult to separate in the recovery process of the flat-plate catalyst, the pollution and the resource consumption caused by the conventional separation method are more, the difficulty in recycling caused by bringing the base material substance into the active substance and the like, the separation is more thorough, the additional bringing of iron and the like in the base material into the active substance is avoided, and the difficulty in recycling the active substance taking titanium dioxide as a main body is reduced.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a method and a device for separating and recycling active substances and base materials of a flat-plate catalyst.
Background
At present, most of boiler and kiln equipment are provided with SCR denitration devices, and SCR catalysts are core components of the SCR denitration devices. The SCR catalyst has severe operation conditions, and fly ash in flue gas can cause the abrasion of the catalyst.
SCR catalysts are mainly classified into honeycomb type and plate type, and the structures of the two types of SCR catalysts are different. The honeycomb catalyst is uniform in overall material, and the flat plate adopts a metal mesh as a base material, and active substances are pressed on the metal mesh base material. After the SCR catalyst is deactivated, if regeneration conditions are not met, scrapping can be carried out, and the scrapped catalyst can be recycled. The whole honeycomb catalyst is a usable active substance, but the flat-plate catalyst cannot treat the metal mesh substrate and the active substance pressed thereon at the same time and needs to be separated firstly.
Some of the current separation and recovery methods are cutting by a saw-toothed wheel (No. CN211613797U), some are washing by high-pressure water (No. CN202011271689.3), and some are brushing off the active substance by a hard brush (No. CN 202010943805.5). However, the cutting, high-pressure water washing, hard brushing and other methods have the problems of complicated process flow and incomplete separation, and the high-pressure water washing can generate more waste water, and more importantly, the processes can further bring iron of the metal mesh substrate into catalyst active substances, so that the recycling of the active substances mainly containing titanium dioxide is influenced.
In view of this, it is of great practical significance to develop a separation and recovery method and device which has the advantages of simple process, energy saving, consumption reduction, thorough separation and capability of avoiding the additional introduction of iron substances in the metal mesh substrate into active substances.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a method and a device for separating and recovering a flat-plate type catalyst active substance from a base material.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
a method for separating and recovering active substances and base materials of a flat-plate catalyst comprises the following steps:
1) fixing of flat catalyst
Placing a plurality of flat-plate catalysts orderly in sequence, and then sending the flat-plate catalysts to a fixing device of a stretching device one by one through a manipulator, wherein the fixing device comprises a fixed part and a movable part which are opposite in surface, the movable part moves relative to the fixed part, two ends of each single-plate catalyst are respectively positioned in the fixed part and the movable part, the single-plate catalysts are occluded and pressurized through the fixed part and the movable part, two ends of each single-plate catalyst are fixed, and the fixed strength can bear the tensile force for stretching the flat-plate catalysts to generate deformation;
2) stretching of flat catalyst
Slowly applying pulling force to the fixed part and the movable part which are used for fixing two ends of the flat-plate catalyst until the base material of the flat-plate catalyst is deformed, and separating and collecting active substances on the base material; stopping stretching when a step change in tension is detected;
3) collection of active substances
The upper plate surface and the lower plate surface of the flat-plate catalyst are separated by active substances, the active substances on the lower plate surface directly and freely fall and are collected, then the flat-plate catalyst is liberated from a fixing device, the flat-plate catalyst is turned over by 180 degrees through a manipulator, and the active substances on the upper plate surface are collected;
in the step 2), pulling force can be slowly applied to the fixed part and the movable part for fixing the two ends of the flat-plate catalyst along the width direction, the length direction or the diagonal direction of the flat-plate catalyst until the base material of the flat-plate catalyst deforms.
Further, a plurality of flat-plate catalysts are orderly stacked and placed on the conveyor belt, and the flat-plate catalysts advance towards the stretching device along the conveyor belt, and then are conveyed into the fixing device of the stretching device one by one through the manipulator, and the two ends of the flat-plate catalysts are fixed.
The invention discloses a device for separating and recovering active substances from a base material of a flat-plate catalyst, which separates and recovers the active substances by adopting a method for separating and recovering the active substances from the base material of the flat-plate catalyst, and comprises a stretching device, a conveyor belt and a manipulator positioned between the stretching device and the conveyor belt, wherein the stretching device comprises a base, a slide rail and a fixed part which are arranged on the base, and a movable part is arranged on the slide rail and can move relative to the fixed part along the slide rail, the fixed part comprises two fixed engaging clamps which are arranged up and down and are opposite in surface, the two fixed engaging clamps are engaged with each other and clamp the left end of the flat-plate catalyst, the movable part comprises two movable engaging clamps which are arranged up and down and are opposite in surface, and the two movable engaging clamps are engaged with each other and clamp the right end of the flat-plate catalyst.
Furthermore, one fixed meshing clamp positioned at the lower part of the fixing part is provided with a plurality of first meshing teeth towards one surface of the flat-plate catalyst, one fixed meshing clamp positioned at the upper part is provided with a plurality of meshing teeth which are matched with the first meshing teeth in position and quantity and are meshed with the first meshing teeth towards one surface of the flat-plate catalyst, and the two fixed meshing clamps are meshed with each other and clamp the left end of the flat-plate catalyst by 10-20 mm.
Furthermore, one movable meshing clamp positioned at the lower part of the movable part is provided with a plurality of second meshing teeth towards one surface of the flat-plate catalyst, one movable meshing clamp positioned at the upper part of the movable part is provided with meshing teeth which are matched with the second meshing teeth in position and quantity and are meshed with the second meshing teeth towards one surface of the flat-plate catalyst, and the two movable meshing clamps are meshed with each other and clamp the right end of the flat-plate catalyst by 10-20 mm.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a method and a device for separating and recovering active substances and base materials of a flat-plate catalyst, wherein the method comprises the following steps: 1) fixing the flat-plate catalyst: placing a plurality of flat-plate catalysts orderly in sequence, and then sending the flat-plate catalysts to a fixing device of a stretching device one by one through a manipulator, wherein the fixing device comprises a fixed part and a movable part which are opposite in surface, the movable part moves relative to the fixed part, two ends of each single-plate catalyst are respectively positioned in the fixed part and the movable part, the single-plate catalysts are occluded and pressurized through the fixed part and the movable part, two ends of each single-plate catalyst are fixed, and the fixed strength can bear the tensile force for stretching the flat-plate catalysts to generate deformation; 2) stretching the flat-plate catalyst: slowly applying pulling force to the fixed part and the movable part which are used for fixing two ends of the flat-plate catalyst until the base material of the flat-plate catalyst is deformed, and separating and collecting active substances on the base material; stopping stretching when a step change in tension is detected; 3) and (3) collecting active substances: the upper plate surface and the lower plate surface of the flat-plate catalyst are separated by active substances, the active substances on the lower plate surface directly and freely fall and are collected, then the flat-plate catalyst is liberated from a fixing device, the flat-plate catalyst is turned over by 180 degrees through a manipulator, and the active substances on the upper plate surface are collected; in the step 2), pulling force can be slowly applied to the fixed part and the movable part for fixing the two ends of the flat-plate catalyst along the width direction, the length direction or the diagonal direction of the flat-plate catalyst until the base material of the flat-plate catalyst deforms. The invention skillfully realizes the separation of the active substances of the flat-plate catalyst and the base material by comprehensively considering the combination mode of the active substances of the flat-plate catalyst and the base material and the geometric characteristics of the base material by adopting a stretching method, collects the active substances on the flat-plate catalyst to the maximum extent, has high recovery efficiency, and creatively solves the problems that the base material and the active substances are difficult to separate in the recovery process of the flat-plate catalyst, the pollution and the resource consumption are more caused by the conventional separation method, the base material substance is difficult to bring into the active substances for recycling, and the like; the method for separating and recovering the active substance from the base material of the flat-plate catalyst has the advantages of more thorough separation, capability of avoiding the additional introduction of iron and the like in the base material into the active substance, reduction of the difficulty in recycling the active substance mainly comprising titanium dioxide, simple process and suitability for industrial popularization and use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a drawing flow diagram of the present invention;
FIG. 3 is a schematic structural view of a flat plate type catalyst loading fixture according to the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a top view of a robot flipping a catalyst plate of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to clearly and clearly define the scope of the present invention.
As shown in fig. 1-5, a method for separating and recovering active substances from a substrate of a flat catalyst comprises the following steps:
1) fixing of flat catalyst
The method comprises the following steps of firstly disassembling small flat-plate catalyst boxes, arranging a plurality of flat-plate catalysts 1 in each small box, orderly placing the flat-plate catalysts 1 on a conveyor belt 2, moving the flat-plate catalysts 1 along the conveyor belt 2 towards a stretching device, and then sending the flat-plate catalysts 1 to a fixing device of the stretching device one by one through a manipulator 3, wherein the fixing device comprises a fixing part 5 and a movable part 6 which are opposite in surface to surface, the movable part 6 moves relative to the fixing part 5, two ends of each single flat-plate catalyst 1 are respectively positioned in the fixing part 5 and the movable part 6, and the single flat-plate catalysts 1 are occluded and pressurized through the fixing part 5 and the movable part 6, so that two ends of each single flat-plate catalyst 1 are fixed, and the fixed strength can bear the pulling force for pulling the flat-plate catalysts 1 to generate deformation;
2) stretching of flat catalyst
Slowly applying pulling force to a fixed part 5 and a movable part 6 which are used for fixing two ends of a flat-plate catalyst 1 until a base material of the flat-plate catalyst 1 deforms, and separating and collecting active substances on the base material; stopping stretching when a step tension change is detected, and intelligently detecting when the stretching is stopped through artificial judgment or a CPU, a singlechip and the like; as shown in fig. 2a, fig. 2b and fig. 2c, the flat catalyst 1 is gradually stretched, when there is a wrinkle or the like on the flat catalyst 1, the flat catalyst needs to be stretched to a state without wrinkle, and then the flat catalyst 1 is continuously stretched until the base material of the flat catalyst 1 is deformed, so that the active material on the base material is separated;
3) collection of active substances
The upper plate surface and the lower plate surface of the flat-plate catalyst 1 are both separated by active substances, the active substances on the lower plate surface directly and freely fall into a first collecting box 12 positioned below the stretching device and are collected, the active substances on the upper plate surface are shielded by an upper shielding part 11 and then fall onto the upper plate surface again, so that the flat-plate catalyst 1 is liberated from a fixing device, the flat-plate catalyst 1 is translated out by a manipulator 3, then the flat-plate catalyst 1 is turned over by 180 degrees and the upper plate surface faces downwards, and the active substances on the upper plate surface freely fall and are collected into a second collecting box 13;
in the step 2), pulling force can be slowly applied to the fixed part 5 and the movable part 6 which are used for fixing two ends of the flat-plate catalyst 1 along the width direction, the length direction or the diagonal direction of the flat-plate catalyst 1 until the base material of the flat-plate catalyst 1 deforms, and active substances on the base material are separated and collected.
The method for separating and recovering the flat-plate catalyst active substance and the base material is implemented by adopting a flat-plate catalyst active substance and base material separating and recovering device which comprises a stretching device, a conveyor belt 2 and a manipulator 3 positioned between the stretching device and the conveyor belt 2, wherein the stretching device comprises a base 4, a slide rail and a fixed part 5 arranged on the base, a movable part 6 is placed on the slide rail and can move relative to the fixed part 5 along the slide rail, the fixed part 5 comprises two fixed meshing clamps 7 which are arranged up and down and are opposite in surface, one surface of one fixed meshing clamp 7 positioned below, facing the flat-plate catalyst 1, is provided with a plurality of first meshing teeth 9, one surface of the fixed meshing clamp 7 positioned above, facing the flat-plate catalyst 1, is provided with a plurality of meshing teeth which are matched with the first meshing teeth 9 in position and quantity, the two fixed engaging clamps 7 are engaged with each other and clamp the left end of the flat-plate catalyst 1 by 10-20mm, the movable part 6 comprises two movable engaging clamps 8 which are arranged up and down and are opposite in surface, one movable engaging clamp 8 positioned below is provided with a plurality of second engaging teeth 10 towards one surface of the flat-plate catalyst 1, one movable engaging clamp 8 positioned above is provided with engaging teeth which are matched with the second engaging teeth 10 in position and quantity and are engaged with the second engaging teeth 10 towards one surface of the flat-plate catalyst 1, and the two movable engaging clamps 8 are engaged with each other and clamp the right end of the flat-plate catalyst 1 by 10-20 mm.
The conveyor belt 2 is made of metal and other scratch-resistant materials, so that the catalyst is prevented from scratching the conveyor belt 2.
The manipulator 3 has a plurality of moving dimensions, can move in a high-low mode or in an arc mode on a horizontal plane after grasping the flat-plate catalyst 1, and can also do overturning motion along an axis at the tail end of the manipulator 6.
The metal mesh substrate of the flat-plate catalyst 1 has high strength, but still deforms under a certain force; the active substance on the metal mesh substrate is completely solidified after being dried and roasted and cannot generate deformation, after enough tensile force is applied to the metal mesh substrate, the grid structure of the metal mesh substrate is changed, but the active substance attached to the metal mesh substrate cannot deform along with the metal mesh substrate and naturally breaks away from the metal mesh substrate, and the stretching method can thoroughly avoid the action between the substrate and the active substance and avoid the influence of unnecessary impurities on the recycling of the active substance due to the fact that the unnecessary impurities enter the active substance;
if the geometry of the substrate structure is relatively stable, it may break at the weakest point in strength under the influence of tensile forces, and it is not possible for deformation to occur in the bulk material. However, in the case of a flat catalyst, the grid shape is a regular parallelogram, and the change of the geometric shape is relatively easy to occur. Thus, the parallelogram of the material as a whole can be geometrically altered by the tensile force. The stretching method skillfully and comprehensively utilizes the combination mode of the active substance and the base material of the flat-plate catalyst and the geometric characteristics of the base material, and creatively solves the problems that the base material and the active substance are difficult to separate in the recovery process of the flat-plate catalyst, the pollution is more and the resource consumption is more caused by the conventional separation method, and the recycling is difficult caused by the base material substance brought into the active substance.
Example 1
The width of a flat-plate catalyst single plate of a project is 460mm, and the length is 500 mm.
And (3) stretching the flat-plate catalyst single plate along the length direction by a stretching device until the flat-plate catalyst single plate is deformed, wherein the record shows that the flat-plate catalyst single plate is 90kN, all active substances on the flat-plate catalyst are separated, the weight of the single plate before treatment is 0.68kg on average, and the weight of the single plate after treatment is 0.35kg on average.
Example 2
The width of a flat-plate catalyst single plate of a certain item is 458mm, and the length is 630 mm.
The flat-plate catalyst single plate is stretched in the width direction through a stretching device until deformation is achieved, the record shows that the deformation is 75kN, all active substances on the flat-plate catalyst are separated, the single plate is weighed to be 0.76kg before treatment, and the single plate is weighed to be 0.37kg after treatment.
The parts of the invention not specifically described can be realized by adopting the prior art, and the details are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A method for separating and recovering active substances and base materials of a flat-plate catalyst is characterized by comprising the following steps:
1) fixing of flat catalyst
Placing a plurality of flat-plate catalysts orderly in sequence, and then sending the flat-plate catalysts to a fixing device of a stretching device one by one through a manipulator, wherein the fixing device comprises a fixed part and a movable part which are opposite in surface, the movable part moves relative to the fixed part, two ends of each single-plate catalyst are respectively positioned in the fixed part and the movable part, the single-plate catalysts are occluded and pressurized through the fixed part and the movable part, two ends of each single-plate catalyst are fixed, and the fixed strength can bear the tensile force for stretching the flat-plate catalysts to generate deformation;
2) stretching of flat catalyst
Slowly applying pulling force to the fixed part and the movable part which are used for fixing two ends of the flat-plate catalyst until the base material of the flat-plate catalyst is deformed, and separating and collecting active substances on the base material; stopping stretching when a step change in tension is detected;
3) collection of active substances
The upper plate surface and the lower plate surface of the flat-plate catalyst are separated by active substances, the active substances on the lower plate surface directly and freely fall and are collected, then the flat-plate catalyst is liberated from a fixing device, the flat-plate catalyst is turned over by 180 degrees through a manipulator, and the active substances on the upper plate surface are collected;
in the step 2), pulling force can be slowly applied to the fixed part and the movable part for fixing the two ends of the flat-plate catalyst along the width direction, the length direction or the diagonal direction of the flat-plate catalyst until the base material of the flat-plate catalyst deforms.
2. The method for separating and recovering active material from a substrate of a flat catalyst as claimed in claim 1, wherein a plurality of flat catalysts are sequentially stacked and placed on a conveyor belt, and the plurality of flat catalysts are advanced along the conveyor belt toward a stretching unit, and then are sequentially transferred to a fixing unit of the stretching unit by a robot and fixed at both ends.
3. A device for separating and recovering active substances from a flat-plate catalyst is characterized in that the device for separating and recovering the active substances from the base materials is used, the device comprises a stretching device, a conveyor belt and a manipulator arranged between the stretching device and the conveyor belt, the stretching device comprises a base, a slide rail and a fixed part, the slide rail and the fixed part are arranged on the base, the movable part is placed on the slide rail and can move relative to the fixed part along the slide rail, the fixed part comprises two fixed engaging clamps which are arranged up and down and are opposite in face, the two fixed engaging clamps are engaged with each other and clamp the left end of the flat-plate catalyst, the movable part comprises two movable engaging clamps which are arranged up and down and are opposite in face, and the two movable engaging clamps are engaged with each other and clamp the right end of the flat-plate catalyst.
4. The device for separating and recovering active material from substrate of flat catalyst according to claim 1, wherein a lower one of the fixed engaging clips of the fixed part is provided with a plurality of first engaging teeth on a side facing the flat catalyst, an upper one of the fixed engaging clips is provided with a plurality of engaging teeth on a side facing the flat catalyst, the engaging teeth are adapted to and engaged with the first engaging teeth in position and number, and two fixed engaging clips are engaged and clamp the left end of the flat catalyst by 10-20 mm.
5. The device for separating and recovering active material from a substrate of a flat catalyst according to claim 1, wherein a lower movable engaging clamp of the movable part is provided with a plurality of second engaging teeth on a side facing the flat catalyst, an upper movable engaging clamp is provided with engaging teeth having a position and a number corresponding to those of the second engaging teeth on a side facing the flat catalyst, and two movable engaging clamps engage and clamp the right end of the flat catalyst by 10-20 mm.
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