A SCR denitration catalyst and production device

Abstract

The present invention discloses an SCR denitration catalyst and production device, including the following steps: S1, putting the above raw materials into a stirring mixer and mixing them fully to obtain a viscous stock solution; S2, adding nitric acid solution to the stock solution and stirring and mixing again, and aging; S3, using a hydraulic press to squeeze the stock solution into a mold composed of multiple injection tubes, and placing the mold together in a shell formed by a mold blank; S4, waiting for the stock solution to fill the entire shell, and standing until the catalyst is initially formed. The SCR denitration catalyst and production device provided by the present invention, through the convex plate pushing the ejector rod to move radially on the cross, so that the ejector rod pushes the pressing block to extend from the side wall of the injection tube, and then under the action of the pressing blocks on the multiple injection tubes that move toward each other, the gap between the mold and the shell is limited by multiple pressing blocks to form a pointed cone-shaped end, and with the addition of wear-resistant materials, the end is not easily damaged during use, thereby increasing the service life of the catalyst.

Description

Technical Field

[0001] The present invention relates to the technical field of SCR denitration catalyst production, and in particular to an SCR denitration catalyst and a production device. Background Art

[0002] SCR denitrification catalyst generally refers to the catalyst used in denitrification systems for various exhaust gas treatments. Common catalyst types include plate type, honeycomb type and corrugated plate type.

[0003] According to the publication (announcement) number: CN113232243B, the publication (announcement) date: 2022-12-06, a SCR denitrification catalyst production mold and a production method thereof are disclosed.

[0004] In the prior art including the above-mentioned patents, honeycomb catalysts are often produced by mold molding, and the molded honeycomb catalysts are cut in equal proportions for actual use. However, the end faces of the cut honeycomb catalysts that face the exhaust gas are very susceptible to wear after long-term use, resulting in uneven end faces that increase the clogging problem and reduce the service life and denitrification efficiency of the honeycomb catalysts. Summary of the invention

[0005] The purpose of the present invention is to provide an SCR denitration catalyst and a production device, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An SCR denitration catalyst, comprising 50-100 parts of deionized water, 10-15 parts of aluminum oxide, 8-16 parts of titanium dioxide carrier, 6-12 parts of auxiliary agent solution, 10-21 parts of nano silicon dioxide powder, 8-19 parts of glass fiber, 7-13 parts of pseudo-boehmite, 5-12 parts of carboxymethyl cellulose, 29-56 parts of polyacrylamide and 15-37 parts of polyethylene oxide;

[0008] The process also includes the following steps:

[0009] S1, putting the above raw materials into a stirring mixer and mixing them thoroughly to obtain a viscous stock solution;

[0010] S2, adding nitric acid solution to the stock solution, stirring and mixing again, and aging;

[0011] S3, using a hydraulic press to squeeze the stock solution into a mold consisting of multiple injection pipes, and placing the mold together in the shell of the molded parison;

[0012] S4, wait until the stock solution fills the entire shell, and let it stand until the catalyst is initially formed;

[0013] S5, accelerating the formation of the honeycomb catalyst through the fan in the shell;

[0014] S6, taking out the formed catalyst from the shell by opening the mold, and placing the catalyst in a dryer;

[0015] S7. Place the dried catalyst in a muffle furnace and calcine to obtain a hard solid catalyst.

[0016] An SCR denitration catalyst production device, comprising a device for implementing the above-mentioned step S3-step S4 of the SCR denitration catalyst, and also comprising a rotating shaft rotatably arranged in the injection pipe, and a cross threadedly connected to the rotating shaft;

[0017] A sleeve is axially slidably arranged on the rotating shaft, a convex plate is circumferentially arranged on the sleeve, and a push rod is arranged on the cross and is pushed by the convex plate and radially away from the axis of the rotating shaft;

[0018] The cross is provided with a pressing block driven by a push rod to move, and every two pressing blocks moving toward each other prompt the catalyst to form an end.

[0019] Preferably, four traction rods are arranged on the cross, and a slide groove which is inserted into the traction rods is provided on the pressing block;

[0020] The rotating shaft is provided with a plurality of screw groove sections with increasing / decreasing pitches.

[0021] Preferably, the traction rod is provided with a notch with its port facing the screw groove section, and the sleeve is provided with a sleeve rod sliding in the notch, and the sleeve rod cooperates with the screw groove section.

[0022] Preferably, a storage tank for accommodating the pressed blocks is provided on the injection pipe, and an extension groove is provided at the port of the storage tank;

[0023] The injection pipe is provided with a liquid hole connected to the extension groove, and the pressing block is movably provided with a partition frame for closing the extension groove in a default state.

[0024] Preferably, a contact block is slidably arranged in the slide groove, and a pull rope is arranged between the contact block and the partition frame, and the push rod pushes the contact block to pull the partition frame to open the extension groove.

[0025] Preferably, a blade is provided on the partition frame, and the partition frame is repositioned to fit the end of the extension groove.

[0026] Preferably, an arc hole connected to the liquid hole is opened in the storage tank.

[0027] Preferably, the partition frame is provided with a push plate which cooperates with the inner wall of the storage tank for scraping.

[0028] Preferably, in the active state, the push plate drains the raw liquid in the storage tank into the arc hole.

[0029] In the above technical scheme, an SCR denitration catalyst and production device provided by the present invention have the following beneficial effects: during the process of closing the mold with the shell, the sleeve is made to slide linearly on the rotating shaft, and the convex plate pushes the ejector rod to move radially on the cross, so that the ejector rod pushes the pressing block to extend from the side wall of the injection tube, making the driving method of the pressing block simpler, and no additional linear motion driving equipment is required. Under the action of the pressing blocks moving toward each other on multiple injection tubes, the gap between the mold and the shell is restricted by multiple pressing blocks to the shape of the catalyst after molding, so that an array of pointed cone-shaped ends are formed on the catalyst, so that when the calcined catalyst is cut and segmented by a cutting machine for use, the head of the end and the tail of another catalyst are cut, so that the thinned end of the end can reduce cutting dust and reduce resource waste. At the same time, with the addition of wear-resistant materials, the end is not easily damaged during actual use, and the service life of the end is increased. Similarly, the durability of the honeycomb catalyst itself is additionally increased, and the problem of clogging caused by wear of the honeycomb catalyst is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 A schematic diagram of assembling a single injection pipe and a part of a honeycomb catalyst provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the explosion of a single injection pipe and a portion of a honeycomb catalyst provided in an embodiment of the present invention;

[0033] Figure 3 A schematic side cross-sectional view of a single injection tube and part of a honeycomb catalyst provided in an embodiment of the present invention;

[0034] Figure 4 A side cross-sectional schematic diagram of a single injection tube and a single group of pressing blocks provided in an embodiment of the present invention;

[0035] Figure 5 for Figure 4 A magnified schematic diagram of point A;

[0036] Figure 6 A schematic diagram of a crushing assembly of a rotating shaft, a sleeve and a side cross-section provided in an embodiment of the present invention;

[0037] Figure 7An exploded schematic diagram of a rotating shaft, a sleeve, a cross piece, a pressing block and a spacer provided in an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 1. Injection pipe; 11. Injection chamber; 2. Catalyst; 21. End; 3. Rotating shaft; 31. Screw groove section; 4. Sleeve; 41. Sleeve rod; 42. Convex plate; 5. Cross; 51. Drawbar; 52. Notch; 53. Push rod; 6. Press block; 60. Storage tank; 61. Slide groove; 62. Extension groove; 63. Liquid hole; 64. Arc hole; 7. Spacer; 71. Push plate; 72. Contact block. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] Embodiment 1

[0042] An SCR denitration catalyst, the catalyst comprising 50-100 parts of deionized water, 10-15 parts of aluminum oxide, 8-16 parts of titanium dioxide carrier, 6-12 parts of auxiliary agent solution, 10-21 parts of nano silicon dioxide powder, 8-19 parts of glass fiber, 7-13 parts of pseudo-boehmite, 5-12 parts of carboxymethyl cellulose, 29-56 parts of polyacrylamide and 15-37 parts of polyethylene oxide;

[0043] Also includes the following steps:

[0044] S1, putting the above raw materials into a stirring mixer and mixing them thoroughly to obtain a viscous stock solution;

[0045] S2, adding nitric acid solution to the stock solution, stirring and mixing again, and aging;

[0046] S3, using a hydraulic press to squeeze the stock solution into a mold composed of multiple injection tubes 1, and placing the mold together in the shell of the preform, and then sliding the sleeve 4 on the rotating shaft 3 in a straight line, so that the convex plate 42 pushes the ejector 53 to move radially on the cross 5, so that the ejector 53 pushes the pressing block 6 to extend from the side wall of the injection tube 1, and then cooperates with the action of the pressing blocks 6 on the multiple injection tubes 1 that move toward each other, so that the gap between the mold and the shell is restricted by the multiple pressing blocks 6 to form the shape of the catalyst 2;

[0047] S4, wait for the stock liquid to fill the entire shell, and let it stand until the catalyst 2 is initially formed, and a pointed cone-shaped end 21 arranged in an array is formed on the catalyst 2, and at the same time, wear-resistant materials such as nano-silicon dioxide powder and glass fiber are added to make the end 21 less susceptible to damage during actual use, thereby increasing the service life of the end 21 and also increasing the durability of the honeycomb catalyst 2 itself;

[0048] S5, accelerating the formation of the honeycomb catalyst 2 through the fan in the shell;

[0049] S6, taking out the formed catalyst 2 from the shell by opening the mold, and placing the catalyst 2 in a dryer;

[0050] S7. Place the dried catalyst 2 in a muffle furnace and calcine to obtain a hard solid catalyst 2.

[0051] Embodiment 2

[0052] like Figure 1-7 As shown, an SCR denitration catalyst production device includes a device for implementing step S3-step S4 in the above-mentioned SCR denitration catalyst, and also includes a rotating shaft 3 rotatably arranged in the injection pipe 1, and a cross 5 threadedly connected to the rotating shaft 3;

[0053] A sleeve 4 is axially slidably disposed on the rotating shaft 3, a convex plate 42 is circumferentially arranged on the sleeve 4, and a push rod 53 is disposed on the cross 5 and is pushed by the convex plate 42 and radially away from the axis of the rotating shaft 3;

[0054] The cross 5 is provided with a pressing block 6 driven by the push rod 53 to move, and every two pressing blocks 6 moving toward each other prompt the catalyst 2 to form an end 21 .

[0055] Specifically, an injection cavity 11 is opened in the injection tube 1, and a plurality of holes for connecting to a raw liquid injection pipeline (not shown in the figure, it is the prior art and will not be described here) are opened at the end of the injection tube 1, and the raw liquid is replenished into the injection cavity 11 through the holes.

[0056] Furthermore, the rotating shaft 3 extends out of the end of the injection tube 1, and a polygonal protrusion is provided at the end of the rotating shaft 3. The purpose is that the staff can use a tool of a specific shape to rotate the rotating shaft 3, so that the rotating shaft 3, which is restricted in rotation by the mold and the shell, can rotate without being disturbed by the outside world, thereby ensuring the safety of the working environment of the rotating shaft 3.

[0057] Furthermore, the sleeve 4 is driven to move by the mold closing, so that each time before the mold extrude the raw liquid to form, the pressing block 6 is first extended out of the surface of the injection tube 1 to wait for work, thereby ensuring the formation of the catalyst 2.

[0058] Furthermore, a groove for the convex plate 42 to slide is provided in the injection cavity 11, and both ends of the convex plate 42 are rounded so that the convex plate 42 in the moving state can more easily resist the sliding of the ejector rod 53, thereby facilitating the driven radial movement of the ejector rod 53.

[0059] Furthermore, one side of the end surface of the pressing block 6 extending out of the injection tube 1 has a long arc-shaped rounding treatment, the purpose of which is to be restricted by the long arc during the original liquid molding to form a pointed cone-shaped end 21, and when the entire section of the catalyst 2 is cut into the required segmented honeycomb catalyst 2, the honeycomb catalyst 2 with the end 21 on this side is the head, and the opposite end of the end 21 of another adjacent honeycomb catalyst 2 is the tail, that is, each honeycomb catalyst 2 is connected head to tail through the end 21, which is convenient for the cutting machine to cut off the adjacent honeycomb catalyst 2 from the end of the end 21 to meet the actual assembly use.

[0060] During the process of closing the mold with the shell, the sleeve 4 slides linearly on the rotating shaft 3, and the convex plate 42 pushes the ejector rod 53 to move radially on the cross 5, so that the ejector rod 53 pushes the pressing block 6 to extend from the side wall of the injection tube 1, making the driving method of the pressing block 6 simpler, and no additional linear motion driving equipment is required. Under the action of the pressing blocks 6 moving toward each other on the multiple injection tubes 1, the gap between the mold and the shell is restricted by the multiple pressing blocks 6 to limit the shape of the catalyst 2 after molding, so that an array of pointed cone-shaped end heads 21 are formed on the catalyst 2, so that when the calcined catalyst 2 is cut and segmented by a cutting machine for use, the head of the end head 21 and the tail of another catalyst 2 are cut, so that the end of the thinned end head 21 can reduce cutting dust and reduce resource waste. At the same time, under the action of the addition of wear-resistant materials, the end head 21 is not easily damaged during actual use, thereby increasing the service life of the end head 21. Similarly, the durability of the honeycomb catalyst 2 itself is additionally increased, and the problem of clogging caused by wear of the honeycomb catalyst 2 is reduced.

[0061] As an embodiment further provided by the present invention, four traction rods 51 are arranged on the cross 5, and a slide groove 61 is provided on the pressing block 6 to be inserted into the traction rods 51;

[0062] The rotating shaft 3 is provided with a plurality of screw groove sections 31 with increasing / decreasing pitches.

[0063] Specifically, the opposite end face of the rounded end face of the pressing block 6 is plugged into the traction rod 51, and a protrusion is fixedly installed on the end face to compensate for the travel of the traction rod 51 sliding in the slide groove 61, so that the pressing block 6 can slide on the traction rod 51 without detaching, thereby increasing the stability of the pressing block 6 when being driven to move.

[0064] Furthermore, a plurality of tension springs are fixedly installed between the end of the traction rod 51 and the slide groove 61 .

[0065] When the pressing block 6 extends out of the side wall of the injection tube 1, the pressing block 6 slides on the end of the traction rod 51, and the push rod 53 abuts against the inner wall of the slide groove 61 to drive the pressing block 6 to move radially, so that the driven movement of the pressing block 6 is smoother. During the rotation of the rotating shaft 3, the equidistantly arranged crosses 5 will be driven to move linearly synchronously, and under the action of the screw groove section 31 with a pitch increasing / decreasing in equal proportion, the spacing between the multiple crosses 5 remains the same after the spacing between adjacent crosses 5 is expanded, thereby pre-adjusting the specifications of the honeycomb catalyst 2, reducing the workload of the subsequent cutting machine, and shortening the processing cycle.

[0066] As another embodiment further provided by the present invention, a notch 52 with its port facing the screw groove section 31 is formed on the traction rod 51 , and a sleeve rod 41 sliding in the notch 52 is provided on the sleeve 4 , and the sleeve rod 41 cooperates with the screw groove section 31 .

[0067] Specifically, four sleeve rods 41 form equidistant openings in the middle of the sleeve 4, and bristles are fixedly installed on the inner side of the sleeve rod 41 at the position of the screw groove section 31 (not shown in the figure, the bristles and their installation method are existing technologies and will not be described here).

[0068] Furthermore, a stopper and a spring are provided on the push rod 53. The stopper is located at the end of the push rod 53. The spring is fixedly installed between the baffle and the inner wall of the notch 52. The spring is arranged in a ring shape on the outer side of the push rod 53. The purpose is to allow the push rod 53 to reset in the notch 52 after losing its thrust force.

[0069] The convex plate 42 on the sleeve rod 41 is moved by the linear motion of the sleeve 4, and as the convex plate 42 slides into the notch 52, the bristles on the inner side of the sleeve rod 41 brush part of the groove on the screw groove section 31, so that the stock liquid at the position of the screw groove section 31 is stirred and kept in a fluid state, thereby preventing the stock liquid from solidifying and affecting the position switching of the cross 5, and the threaded connection parts of the cross 5 between adjacent notches 52 can maintain the assembly with the screw groove section 31, so that the cross 5 can maintain its working stability when the convex plate 42 passes through it.

[0070] As another embodiment further provided by the present invention, a storage tank 60 for receiving the pressing block 6 is provided on the injection pipe 1, and an extension groove 62 is provided at the end of the storage tank 60;

[0071] A liquid hole 63 connected to the extension groove 62 is provided in the injection tube 1 , and a partition frame 7 for closing the extension groove 62 in a default state is movably provided on the pressing block 6 .

[0072] Specifically, the storage tanks 60 are equidistantly arranged on the four side walls of the injection tube 1 , and the storage tanks 60 on a single side wall are arranged in an array, so that the end heads 21 can be formed equidistantly and the honeycomb catalyst 2 can be cut easily.

[0073] Furthermore, each storage tank 60 has two extension grooves 62 for adapting to the two partitions 7 on the pressure block 6; a channel is opened in the storage tank 60 for the inner end surface protrusion of the pressure block 6 to move, and the channel also facilitates the traction rod 51 to pass through and move.

[0074] The raw liquid is injected into the extension groove 62 through the liquid hole 63 through the injection cavity 11, and the raw liquid overflows after filling the storage tank 60, and enters the gap between the multiple injection tubes 1 and the shell, so as to facilitate the hardening and molding of the catalyst 2. When the pressing block 6 is received in the storage tank 60, the partition frame 7 also moves with it and moves to the inner wall of the extension groove 62 until the port of the liquid hole 63 is closed to realize the blocking of the raw liquid, so as to avoid the problem of the raw liquid sagging and dripping waste after the catalyst 2 is demolded, thereby improving the molding efficiency of the catalyst 2.

[0075] As another embodiment further provided by the present invention, a contact block 72 is slidably disposed in the slide groove 61 , and a pull rope is disposed between the contact block 72 and the partition frame 7 , and the top rod 53 pushes the contact block 72 to pull the partition frame 7 to open the extension groove 62 .

[0076] Specifically, the contact block 72 is symmetrically provided with sliders that slide in the slide groove 61 to provide movement limit for the contact block 72 so that the contact block 72 can maintain vertical and stable sliding to avoid the problem of deflection of the contact block 72 when the force is unevenly applied.

[0077] Furthermore, a plurality of slide bars are fixedly mounted on the partition frame 7, and the slide bars slide in a slideway opened in the pressure block 6, and a spring is fixedly mounted between the slide bars and the slideway, and the deformation of the spring can adapt to the switching position of the pressure block 6, so that the partition frame 7 can adapt to the opening and closing of the extension groove 62 after the position of the pressure block 6 is changed.

[0078] Before the pressing block 6 is pushed out of the storage tank 60 by the push rod 53, the push rod 53 first pushes the contact block 72 to slide, and the two pull ropes pull the partition frame 7 to retract the pressing block 6, and then the contact block 72 is attached to the inner wall of the slide groove 61, and then the pressing block 6 is pushed to move, and the partition frame 7 also reserves a section of length outside the pressing block 6, the purpose is to provide the partition frame 7 with the extension groove 62 to open, so that the original liquid in the extension groove 62 can be mixed and supplemented with the original liquid filled in the liquid hole 63, and injected into the space between the shell and the mold for molding, and when the traction rod 51 is in the middle of the storage tank 60, the two partition frames 7 open / close the extension groove 62 at the same time, and when the traction rod 51 deviates from the middle of the storage tank 60, one of the partition frames 7 will not open its corresponding extension groove 62, and the pull rope on the partition frame 7 is loosened, and it does not affect the normal discharge of original liquid from one extension groove 62 for catalyst 2 molding.

[0079] As another embodiment further provided by the present invention, a blade is provided on the partition frame 7, and the partition frame 7 is reset to fit the end of the extension groove 62.

[0080] Specifically, after the spacer 7 is extended and moved along with the pressing block 6 , the end surface of the spacer 7 can be flush with the end surface of the injection tube 1 , thereby preventing the storage tank 60 and the extension tank 62 from interfering with the demoulding of the catalyst 2 .

[0081] The push rod 53 is reset by sliding the convex plate 42 out of the notch 52, and the contact block 72 that is pushed first is reset first, so that the blade at the end of the partition frame 7 is close to the extension groove 62 until the partition frame 7 closes the extension groove 62. During this period, the blade at the end of the partition frame 7 cuts off the inner wall of the catalyst 2 that is not completely hardened, and then it is allowed to stand for a period of time with the drying parts in the shell. After the inside of the catalyst 2 has hard conditions, it is completely separated from the convex plate 42, so that the pressing block 6 is stored in the storage tank 60, and the liquid hole 63 is closed along with the end of the partition frame 7 being stored in the extension groove 62, so that no hardening bulge will appear in the catalyst 2 during the hardening process due to the tank body. The purpose is to improve the smoothness of the demolding of the catalyst 2 and avoid the problem of jamming.

[0082] As another embodiment further provided by the present invention, an arc hole 64 connected to the liquid hole 63 is opened in the storage tank 60.

[0083] Part of the raw liquid in the diversion liquid hole 63 is replenished into the storage tank 60 through the arc hole 64, so that the raw liquid stored in the storage tank 60 is mixed with the new raw liquid to avoid the hardening of the raw liquid in the storage tank 60. After the partition frame 7 opens the extension groove 62, the mixed raw liquid in the storage tank 60 is replenished into the shell for molding, thereby improving the flow effect of the raw liquid in the storage tank 60. The channel in the storage tank 60 for providing the movement of the traction rod 51 will also replenish the raw liquid into the storage tank 60, so that the raw liquid flowing in the storage tank 60 is strengthened, thereby increasing the stability of equipment operation.

[0084] As another embodiment further provided by the present invention, a push plate 71 is provided on the partition frame 7 to scrape the inner wall of the storage tank 60 .

[0085] Specifically, the push plate 71 is located on the side of the pressing block 6 having the protrusion, and the push plate 71 is fixedly mounted on the slide bar of the partition frame 7, so that the push plate 71 and the partition frame 7 can move synchronously.

[0086] During the process of the pressure block 6 being driven to retract by the partition frame 7, and the pressure block 6 has not yet extended out of the storage tank 60, the end of the partition frame 7 used to close the liquid hole 63 enters the storage tank 60 from the extension groove 62, and the end of the push plate 71 scrapes the inner wall of the storage tank 60 to avoid the problem of hardening and adhesion of the raw liquid on the inner wall of the storage tank 60, thereby ensuring the amount and fluidity of the raw liquid in the storage tank 60 and making it easier to mix and discharge the raw liquid in the storage tank 60.

[0087] As another embodiment further provided by the present invention, the push plate 71 in the active state guides the raw liquid in the storage tank 60 into the arc hole 64.

[0088] During the repeated linear motion of the partition frame 7, the push plate 71 can be continuously stirred in the storage tank 60, thereby accelerating the fluidity of the raw liquid in the storage tank 60 and making the mixing efficiency of the raw liquid entering the storage tank 60 through the channel higher. At the same time, the raw liquid in the storage tank 60 will also flow into the arc hole 64 during the stirring process, so that the raw liquid between the storage tank 60, the liquid hole 63 and the arc hole 64 can continuously flow, thereby increasing the reflux effect of the raw liquid, and also making the raw liquid in the storage tank 60 have a heat storage and heat preservation effect, thereby ensuring that the raw liquid is discharged in a fluid state.

[0089] Working principle: During the process of closing the mold with the shell, the sleeve 4 is made to slide linearly on the rotating shaft 3, and the convex plate 42 is made to push the ejector rod 53 to move radially on the cross 5, so that the ejector rod 53 pushes the pressing block 6 to extend from the side wall of the injection tube 1, and under the action of the pressing blocks 6 moving toward each other on the multiple injection tubes 1, the gap between the mold and the shell is restricted by the multiple pressing blocks 6 to form the shape of the catalyst 2 after molding, so that an array of pointed cone-shaped ends 21 are formed on the catalyst 2, so that when the calcined catalyst 2 is cut and segmented by a cutting machine for use, the head of the end 21 and the tail of another catalyst 2 are cut, so that the end of the thinned end 21 can reduce cutting dust and also reduce resource waste, and in the process of rotating the rotating shaft 3, the equidistantly arranged crosses 5 will be synchronously driven to move linearly, and under the action of the screw groove section 31 with an equal-proportional increase / decrease in pitch, the spacing between the multiple crosses 5 is expanded. After the size is increased, the spacing between adjacent crosses 5 is still kept the same, so as to pre-adjust the specifications of the honeycomb catalyst 2, reduce the workload of the subsequent cutting machine, shorten the processing cycle, and the convex plate 42 slides out of the notch 52 to reset the push rod 53, and reset the contact block 72 that is pushed first, so that the blade at the end of the partition frame 7 is close to the extension groove 62, until the partition frame 7 closes the extension groove 62, during which the blade at the end of the partition frame 7 cuts off the inner wall of the catalyst 2 that is not fully hardened, and then stands for a period of time with the drying parts in the shell, and after the inside of the catalyst 2 has hard conditions, it is completely separated from the convex plate 42, so that the pressing block 6 is received in the storage tank 60, and the liquid hole 63 is closed along with the end of the partition frame 7 being received in the extension groove 62, so that the catalyst 2 will not have a hardening bulge due to the tank body during the hardening process, the purpose is to improve the smoothness of the demoulding of the catalyst 2 and avoid the problem of jamming.

[0090] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An SCR denitration catalyst production device, comprising an SCR denitration catalyst, characterized in that: The SCR denitration catalyst raw materials include 50-100 parts of deionized water, 10-15 parts of aluminum oxide, 8-16 parts of titanium dioxide carrier, 6-12 parts of additive solution, 10-21 parts of nano silicon dioxide powder, 8-19 parts of glass fiber, 7-13 parts of pseudo-boehmite, 5-12 parts of carboxymethyl cellulose, 29-56 parts of polyacrylamide and 15-37 parts of polyethylene oxide; The preparation process of the SCR denitration catalyst comprises the following steps: S1, putting the raw materials into a stirring mixer and mixing them thoroughly to obtain a viscous stock solution; S2, adding nitric acid solution to the stock solution, stirring and mixing again, and aging; S3, using a hydraulic press to squeeze the aged stock solution into a mold consisting of a plurality of injection pipes (1), and placing the mold together in a shell formed by the preform; S4, after the aged stock solution fills the entire shell, let it stand until the catalyst is initially formed; S5, accelerating the formation of the honeycomb catalyst through the fan in the shell; S6, taking out the formed catalyst from the shell by opening the mold, and placing the catalyst in a dryer; S7, placing the dried catalyst in a muffle furnace for calcining to obtain a hard solid SCR denitration catalyst; The production device used in step S3-step S4 of the SCR denitration catalyst preparation process also includes a rotating shaft (3) rotatably arranged in the injection pipe (1), and a cross (5) threadedly connected to the rotating shaft (3); A sleeve (4) is axially slidably provided on the rotating shaft (3), a convex plate (42) is circumferentially arranged on the sleeve (4), and a push rod (53) is provided on the cross (5) and is pushed by the convex plate (42) and radially away from the axis of the rotating shaft (3); The cross (5) is provided with a pressing block (6) driven by a push rod (53) to move, and every two pressing blocks (6) moving towards each other promote the catalyst (2) to form an end (21); The cross (5) is provided with four traction rods (51), and the pressing block (6) is provided with a sliding groove (61) to which the traction rods (51) are inserted; The rotating shaft (3) is provided with a plurality of screw groove sections (31) with increasing / decreasing pitches; The traction rod (51) is provided with a notch (52) with its port facing the screw groove section (31), and the sleeve (4) is provided with a sleeve rod (41) that slides in the notch (52), and the sleeve rod (41) cooperates with the screw groove section (31).

2. The SCR denitration catalyst production device according to claim 1, characterized in that: The injection pipe (1) is provided with a storage tank (60) for accommodating the pressing block (6), and an extension groove (62) is provided at the end of the storage tank (60); The injection tube (1) is provided with a liquid hole (63) connected to the extension groove (62), and the pressing block (6) is movably provided with a partition (7) for closing the extension groove (62) in a default state.

3. The SCR denitration catalyst production device according to claim 2, characterized in that: A contact block (72) is slidably disposed in the slide groove (61), and a pull rope is disposed between the contact block (72) and the partition frame (7). The top rod (53) pushes the contact block (72) to pull the partition frame (7) to open the extension groove (62).

4. The SCR denitration catalyst production device according to claim 3, characterized in that: The partition frame (7) is provided with a blade, and the partition frame (7) is reset to fit the end of the extension groove (62).

5. The SCR denitration catalyst production device according to claim 4, characterized in that: The storage tank (60) is provided with an arc hole (64) which is connected to the liquid hole (63).

6. The SCR denitration catalyst production device according to claim 5, characterized in that: The partition frame (7) is provided with a push plate (71) that scrapes against the inner wall of the storage tank (60).

7. The SCR denitration catalyst production device according to claim 6, characterized in that: In the active state, the push plate (71) guides the raw liquid in the storage tank (60) into the arc hole (64).

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