CN211988029U

CN211988029U - Take support flue gas denitration catalyst abrasionproof device that flow equalizes

Info

Publication number: CN211988029U
Application number: CN202020505803.3U
Authority: CN
Inventors: 易作宏; 彭峻; 彭伟; 王乾沩
Original assignee: Hunan Anpunuo Environmental Protection Technology Co ltd
Current assignee: Hunan Anpunuo Environmental Protection Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-11-24
Anticipated expiration: 2030-04-09

Abstract

The utility model provides a take support flue gas denitration catalyst abrasionproof device that flow equalizes, including the abrasionproof module that flow equalizes, movable clamping groove support, bridge shape fossil fragments support and sealing strip, movable clamping groove support is installed on the flat billet of catalyst module upper portion graticule, bridge shape fossil fragments support erects on movable clamping groove support, bridge shape fossil fragments support top sets up the abrasionproof module and sealing strip that flow equalizes, the abrasionproof module that flow equalizes comprises module frame, supporting graticule, wear-resisting honeycomb ceramic piece and bonding sealing material, assemble according to the plane size of catalyst module and form a whole, the utility model discloses a device can effectively prevent that denitration catalyst from being worn by the flue gas that contains dust, prolongs catalyst life, guarantees the long period stable operation of denitration system; meanwhile, when the boiler is shut down for minor repair and major repair, the abrasion-proof module with serious abrasion can be checked and replaced, so that the replacement of expensive catalyst is avoided, and the operating cost is reduced.

Description

Take support flue gas denitration catalyst abrasionproof device that flow equalizes

Technical Field

The utility model relates to a flue gas treatment technical field, concretely relates to take support flue gas denitration catalyst abrasionproof device that flow equalizes.

Background

The key facility of the existing SCR flue gas denitration technology is a catalyst, but the catalyst is easily worn by dust-containing flue gas and cannot reach the designed service life of the catalyst, generally speaking, the wear of the catalyst is mainly caused by the scouring of fly ash on the surface of the catalyst. In the long-time operation process, the washing of the fly ash to the catalyst can cause the loss of active substances on the surface of the catalyst, so that the activity of the catalyst is reduced; the catalyst is thinned, and the mechanical strength is reduced; when a worn pore channel flows through flue gas, the flow resistance and the pressure drop are reduced, and more flue gas flows through the pore channel in comparison, so that the wearing effect is further aggravated, the wearing generally starts from the top, except the scouring of fly ash, if the soot blowing mode in an SCR system is improper, the soot blowing impulse is overlarge, the wear of the catalyst can be caused after long-time use, so that the denitration efficiency is reduced, the furnace is stopped for replacement midway after the denitration efficiency is reduced, the denitration cost is increased, the loss caused by unplanned furnace stopping is also brought, and the problem that how to solve the wear of the denitration catalyst is necessary to face is solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a take support flue gas denitration catalyst wear proof device that flow equalizes can solve the wearing and tearing problem of SCR denitration catalyst in the use effectively.

The technical scheme of the utility model is that: the utility model provides a take support flue gas denitration catalyst abrasionproof device that flow equalizes, the device is established in catalyst module top, including the abrasionproof module that flow equalizes, activity draw-in groove support, bridge shape fossil fragments support and sealing strip, activity draw-in groove support mounting is in catalyst module top, and bridge shape fossil fragments support erects on activity draw-in groove support, and bridge shape fossil fragments support top sets up the abrasionproof module that flow equalizes, and the abrasionproof module clearance top of flow equalizes is provided with the sealing strip.

Furthermore, the flow equalizing anti-abrasion module is composed of a module outer frame, a supporting grid, an anti-abrasion honeycomb ceramic block and an adhesive sealing material, and is assembled into a whole according to the plane size of the catalyst module.

Furthermore, the module outer frame is welded by 3-5mm steel plates, the upper and lower frame plates of the module outer frame can be folded and turned out by 10-20mm to increase the strength, or angle steel or flat steel is used as a reinforcing rib, and four corners are fully welded or welded by angle steel wrap welding.

Furthermore, the supporting grid is welded into a chessboard shape by adopting flat steel side-standing criss-cross welding, a steel wire mesh with proper aperture and wire diameter is laid on the supporting grid, the periphery of the steel wire mesh is flanged, and the steel wire mesh is fastened and clamped between the edge strips of the flat steel grids and the outer frame wall of the module through bolts.

Furthermore, the wear-resistant honeycomb ceramic blocks are paved on the supporting grid, gaps between the wear-resistant honeycomb ceramic blocks or between the wear-resistant honeycomb ceramic blocks and the outer frame of the module are filled and sealed by high-temperature-resistant glue and ceramic fiber sheets, the plane size of a single wear-resistant honeycomb ceramic block is the same as that of a catalyst module unit, the honeycomb pore size is also the same, the thickness of the honeycomb ceramic block is determined according to the use condition and the service life, generally 30-50mm, the catalyst module corresponds to the flow-equalizing wear-resistant module in the vertical position during installation, namely the honeycomb pore sizes of the catalyst module and the flow-equalizing wear-resistant module correspond one to one.

Furthermore, after the flow equalizing anti-abrasion modules are installed, herringbone or inclined plate-shaped sealing elements are additionally arranged in gaps among the flow equalizing anti-abrasion modules or gaps between the peripheral modules and the flue wall to prevent short flow of flue gas.

Further, the activity draw-in groove support includes curb plate and diaphragm, and two curb plate parallel arrangement are connected by 1 diaphragm in the middle of, are equipped with the notch on the curb plate, and the activity draw-in groove support passes through the notch and pegs graft and establish on the flat billet of catalyst module upper portion graticule, and is preferred, and the intermediate position in the curb plate lower part is established to the notch, and the size of notch cooperatees with the flat billet of catalyst module upper portion graticule.

Furthermore, the transverse plate and the side plate planes are perpendicular to the horizontal plane, so that the blocking of smoke is reduced to the maximum extent.

Furthermore, the top of the side plate is 30-50mm higher than the top of the transverse plate, so that the side plate can limit the bridge-shaped keel supported on the side plate.

Furthermore, the transverse plate and the side plates are made of stainless steel or temperature-resistant carbon steel, the connecting parts of the transverse plate and the side plates are fully welded, and the movable clamping grooves are high in strength, wear-resistant, corrosion-resistant and high-temperature-resistant.

Furthermore, the bridge-shaped keel bracket consists of keel side plates and keel transverse plates; the keel transverse plate is arranged between the two keel side plates, the height of the keel side plates is 30-70mm, and the thickness of the keel side plates is 3-5 mm.

Furthermore, the keel transverse plates and the keel side plates are made of stainless steel or temperature-resistant carbon steel materials, the keel transverse plates and the keel side plates are welded, the distance between the keel transverse plates is 300-500mm, and the keel transverse plates are arranged on the side plates in parallel.

Furthermore, the keel transverse plate and the keel side plate are perpendicular to the horizontal plane, so that blocking of smoke is reduced to the maximum extent.

The utility model has the advantages that: the device of the utility model can effectively prevent the denitration catalyst from being worn by the dust-containing flue gas, prolong the service life of the catalyst and ensure the long-period stable operation of the denitration system; meanwhile, when the boiler is shut down for minor repair and major repair, the abrasion-proof module with serious abrasion can be checked and replaced, so that the replacement of expensive catalyst is avoided, and the operating cost is reduced.

Drawings

FIG. 1 is a schematic view of the installation structure of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a movable card slot support according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a bridge keel bracket according to embodiment 1 of the invention;

in the figure: 1-flue wall, 2-catalyst module, 3-movable clamping groove support, 4-bridge-shaped keel support, 5-flow equalizing anti-abrasion module, 6-sealing strip, 7-side plate, 8-transverse plate, 9-notch, 10-keel side plate and 11-keel transverse plate.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific embodiments, wherein components or systems not specifically described in the present embodiment are known in the art.

Example 1

As shown in the attached drawings 1-3, the device is arranged above a catalyst module 2, and comprises a flow equalizing anti-abrasion module 5, a movable clamping groove support 3, a bridge-shaped keel support 4 and a sealing strip 6, wherein the movable clamping groove support 3 is arranged on a flat steel strip of a grid on the upper part of the catalyst module 2, the bridge-shaped keel support 4 is erected on the movable clamping groove support 3, the flow equalizing anti-abrasion module 5 is arranged above the bridge-shaped keel support 4, the flow equalizing anti-abrasion module 5 comprises a module outer frame, a supporting grid, wear-resistant honeycomb ceramic blocks and bonding sealing materials, a whole body is assembled according to the plane size of the catalyst module 2, the module outer frame of the embodiment is welded by a 5mm steel plate, and the frame plate can be folded and turned out by about 15mm up and down to increase the strength.

The supporting grid is in a shape of a chessboard formed by welding flat steel side-to-side criss-cross, a steel wire mesh with proper pore diameter and wire diameter is laid on the supporting grid, the periphery of the steel wire mesh is flanged and clamped between the edge strips of the flat steel grid and the outer frame wall of the module through bolts, wear-resistant honeycomb ceramic blocks are laid on the supporting grid, gaps between the wear-resistant honeycomb ceramic blocks or between the wear-resistant honeycomb ceramic blocks and the outer frame of the module are filled and sealed by high-temperature-resistant glue and ceramic fiber sheets, the plane size of each wear-resistant honeycomb ceramic block is the same as that of the catalyst module 2 unit, the pore diameter of the honeycomb is also the same, the thickness of the honeycomb ceramic block is 30mm, the catalyst module 2 corresponds to the flow-equalizing wear-resistant module 5 in the vertical position during installation.

After the flow equalizing anti-abrasion module 5 is installed, a herringbone or inclined plate-shaped sealing element 6 is additionally arranged on a gap in the flow equalizing anti-abrasion module 5 or a gap between the module and the flue wall 1 to prevent short flow of flue gas.

Activity draw-in groove support 3 includes curb plate 7 and

diaphragm

8, 7 parallel arrangement of two blocks of curb plates, the centre is connected by 1 diaphragm 8, be equipped with notch 9 on curb plate 7, activity draw-in groove support 3 is established on the flat billet of 2 upper portion graticule of catalyst module through notch 9 grafting card, notch 9 is established at the intermediate position of curb plate 7 lower part, the size of notch 9 cooperatees with the flat billet of 2 upper portion graticule of catalyst module,

diaphragm

8 and 7 equal perpendicular to horizontal planes in curb plate plane, the at utmost reduces blockking of flue gas, 8 top 40mm above diaphragm 8 of curb plate top, so that curb plate 7 carries on spacingly to the bridge shape fossil fragments that support above that, the diaphragm 8 and the curb plate 7 of this embodiment become for the stainless steel, diaphragm 8 adopts the full weld with the junction of curb plate 7, activity draw-in groove intensity is high, stand.

The bridge-shaped keel bracket 4 consists of a keel side plate 10 and a keel transverse plate 11; the keel transverse plate 11 is arranged between the two keel side plates 10, the height of the keel side plates 10 is 50mm, the thickness of the keel side plates is 3mm, the keel transverse plate 11 and the keel side plates 10 are made of stainless steel materials, the keel transverse plate 11 is welded with the keel side plates 10, the distance between the keel transverse plates 11 is 300-500mm, the keel transverse plates 7 are arranged in parallel, the planes of the keel transverse plate 11 and the keel side plates 10 are perpendicular to the horizontal plane, and blocking of smoke is reduced to the maximum degree

This embodiment is when using, and the flue gas denitration catalyst device that original installation is good need not make any change, all inserts movable clamping groove support 3 in 2 four corners of primary catalyst module, and on the flat billet of the net of primary catalyst module upper portion blocked card, puts bridge shape fossil fragments support 4 on the movable clamping groove support 3 again. The adjacent catalyst module 2 in the middle of the flue can adopt a widened support and a widened keel bracket of the cross module. The anti-abrasion module 5 that flow equalizes puts on bridge shape fossil fragments support 4, makes the anti-abrasion module that flow equalizes align with catalyst module 2 of its below, places chevron shape sealing member 6 between adjacent anti-abrasion module 5 that flow equalizes and between adjacent catalyst module 2 at last to it is fixed with module frame spot welding, places swash plate sealing member 6 between anti-abrasion module 5 or catalyst module 2 and flue wall 1 that flow equalizes, and adopts spot welding fixed with flue wall 1 and module frame. When the device uses, the flue gas is earlier through the abrasionproof layer that flow equalizes, blocks on the one hand the impact of smoke and dust to catalyst module 2 in the flue gas, and great granule dust is intercepted in the flue gas, and on the other hand makes the flue gas more even and pass through the catalyst layer perpendicularly to alleviate wearing and tearing.

It is obvious that the above are only some embodiments of the present invention, and are not used for limiting the present invention, and for those skilled in the art, the present invention can have the combination and modification of the above various technical features, and those skilled in the art can replace the modifications, equivalents, or use the structure or method of the present invention in other fields to achieve the same effect without departing from the spirit and scope of the present invention, and all belong to the protection scope of the present invention.

Claims

1. The utility model provides a take support flue gas denitration catalyst abrasionproof device that flow equalizes, the device establishes in catalyst module (2) top, including wear-proof module (5), activity draw-in groove support (3), bridge shape fossil fragments support (4), sealing strip (6) etc. of flow equalizing, its characterized in that: the movable clamping groove support (3) is installed on a flat steel bar of a grid on the upper portion of the catalyst module (2), the bridge-shaped keel support is erected on the movable clamping groove support (3), and the flow equalizing anti-abrasion module (5) and the sealing strip (6) are arranged above the bridge-shaped keel support.

2. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 1, is characterized in that: the flow equalizing anti-abrasion module (5) is composed of a module outer frame, a supporting grid, wear-resistant honeycomb ceramic blocks and bonding sealing materials, wherein the module outer frame is welded by 3-5mm steel plates, and the frame plates are folded and turned out by 10-20mm at the upper and lower sides.

3. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 2, is characterized in that: the supporting grid is in a shape of a chessboard formed by welding flat steel in a side-standing criss-cross mode, a steel wire mesh with proper pore diameter and wire diameter is laid on the supporting grid, wear-resistant honeycomb ceramic blocks are laid on the supporting grid, and gaps among the wear-resistant honeycomb ceramic blocks or between the wear-resistant honeycomb ceramic blocks and the outer frame of the module are filled and sealed by high-temperature-resistant glue and ceramic fiber sheets.

4. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 1, is characterized in that: the movable clamping groove support (3) comprises side plates (7) and transverse plates (8), the two side plates (7) are arranged in parallel, the middle of the two side plates is connected by the transverse plate (8), and the planes of the transverse plates (8) and the side plates (7) are perpendicular to the horizontal plane.

5. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 4, is characterized in that: be equipped with notch (9) on curb plate (7), movable clamping groove support (3) are connected on catalyst module (2) through notch (9), establish in curb plate (7) lower part intermediate position notch (9), the size of notch (9) cooperatees with the flat billet of catalyst module (2) upper portion graticule.

6. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 4, is characterized in that: the top of the side plate (7) is 30-50mm higher than the top of the transverse plate (8), so that the side plate (7) can limit the bridge-shaped keel supported on the side plate.

7. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 4, is characterized in that: the transverse plate (8) and the side plates (7) are made of stainless steel or heat-resistant carbon steel, and the connecting parts of the transverse plate (8) and the side plates (7) are welded.

8. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 1, is characterized in that: the bridge-shaped keel bracket (4) consists of keel side plates (10) and keel transverse plates (11); the keel transverse plate (11) is arranged between the two keel side plates (10), and the height of the keel side plates (10) is 30-70mm, and the thickness is 3-5 mm.

9. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 8, is characterized in that: the keel transverse plates (11) and the keel side plates (10) are made of steel materials, the keel transverse plates (11) are welded with the keel side plates (10), the distance between the keel transverse plates (11) is 300-500mm, and the keel transverse plates (11) are arranged on the side plates (7) in parallel.

10. The flow equalizing wear-resistant device for the flue gas denitration catalyst with the support as claimed in claim 8, is characterized in that: the keel transverse plate (11) and the keel side plate (10) are perpendicular to the horizontal plane.