CN215278107U

CN215278107U - A automatic spray structure for denitration catalyst regeneration

Info

Publication number: CN215278107U
Application number: CN202121742714.1U
Authority: CN
Inventors: 王丽朋; 宋玉宝; 何川; 孔凡海; 卞子君; 李昂; 李乐田; 吴国勋; 张发捷; 杨晓宁; 马云龙; 姚燕; 雷嗣远; 王乐乐; 鲍强; 王凯; 卿梦磊
Original assignee: Xian Thermal Power Research Institute Co Ltd; Suzhou Xire Energy Saving Environmental Protection Technology Co Ltd
Current assignee: Xian Thermal Power Research Institute Co Ltd; Suzhou Xire Energy Saving Environmental Protection Technology Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-12-24
Anticipated expiration: 2031-07-29

Abstract

The utility model provides an automatic spray structure for denitration catalyst regeneration, include: the denitration catalyst cleaning device comprises a cleaning component and a moving trolley, wherein denitration catalysts to be cleaned are loaded on the moving trolley, a laser identifier is arranged at one end of the cleaning component, a conveying component is arranged at the other end of the cleaning component and used for conveying the moving trolley into the cleaning component, the conveying component is connected with a conveying driving piece, the conveying driving piece is connected with a speed changer, the laser identifier is electrically connected with a control unit, the control unit is electrically connected with the speed changer, and the speed changer is electrically connected with the conveying driving piece and used for regulating and controlling the speed of the conveying component for conveying the moving trolley; in the denitration catalyst pre-cleaning process with different ash blocking degrees, the using amount of the pre-cleaning liquid can be saved, and the denitration catalyst pre-cleaning cost is further reduced.

Description

A automatic spray structure for denitration catalyst regeneration

Technical Field

The utility model relates to a denitration catalyst washs technical field, concretely relates to an automatic spray structure for denitration catalyst regeneration.

Background

At present, in the SCR denitration technology which is most widely used and mature in thermal power plants, the used deactivated catalyst needs to be regenerated. The pre-cleaning is an important process in the regeneration process, so that the consumption of cleaning agents in the subsequent chemical cleaning process can be reduced, and the subsequent chemical cleaning and active load effects can be improved.

The existing denitration catalyst pre-cleaning time is the same, the denitration catalyst pre-cleaning time is not adjusted according to different ash blocking degrees, when the denitration catalyst ash blocking degree is light, if the denitration catalyst pre-cleaning time is long, the serious waste of the pre-cleaning liquid is caused, the denitration catalyst pre-cleaning cost is improved, and when the denitration catalyst ash blocking degree is heavy, if the denitration catalyst pre-cleaning time is short, the denitration catalyst pre-cleaning is very easy to cause incomplete pre-cleaning.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an automatic spray structure for denitration catalyst regeneration, the denitration catalyst that stifled ash degree is different washs the in-process in advance, not only can practice thrift the quantity of washing liquid in advance, has more reduced the denitration catalyst cost of wasing in advance.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides an automatic spray structure for denitration catalyst regeneration, include: the denitration catalyst cleaning device comprises a cleaning component and a moving trolley, wherein denitration catalysts to be cleaned are filled on the moving trolley, a laser identifier is arranged at one end of the cleaning component, a conveying component is arranged at the other end of the cleaning component and used for conveying the moving trolley into the cleaning component, the conveying component is connected with a conveying driving piece, the conveying driving piece is connected with a speed changer, the laser identifier is electrically connected with a control unit, the control unit is electrically connected with the speed changer, and the speed changer is electrically connected with the conveying driving piece and used for regulating and controlling the speed of the moving trolley conveyed by the conveying component.

The utility model provides an automatic spray structure for denitration catalyst regeneration, in the denitration catalyst of stifled ash degree difference abluent in-process in advance, not only can practice thrift the quantity of washing liquid in advance, more reduced the denitration catalyst cost of wasing in advance.

According to the preferable technical scheme, a moving trolley inlet and a moving trolley outlet are formed in the side wall of the cleaning assembly, the conveying assembly sequentially penetrates through the moving trolley inlet and the moving trolley outlet, the moving trolley inlet is movably connected with a moving trolley inlet lifting plate, and the moving trolley outlet is movably connected with a moving trolley outlet lifting plate.

As a preferred technical scheme, a manual hoist is connected to the top wall of the cleaning assembly, a spray pipe support is arranged inside the cleaning assembly, and the manual hoist is connected with the spray pipe support through a lifting rope.

As a preferred technical scheme, a spray pipe bracket clamping groove is formed in the side wall of the cleaning assembly, and the spray pipe bracket is clamped with the spray pipe bracket clamping groove.

As a preferred technical scheme, a plurality of rows of spray pipes are arranged on the spray pipe bracket, and each row of spray pipes are distributed in a cross mode.

According to the preferable technical scheme, the spray pipe is connected with a spray pump through a metal hose, the metal hose is connected with a pressure gauge, the spray pump is connected with a water storage tank through a first water inlet pipeline, and the first water inlet pipeline is connected with a water inlet valve.

As a preferred technical scheme, a moving trolley is connected to the conveying assembly in a sliding mode, and the spraying pipe corresponds to the moving trolley and is matched with the moving trolley to spray and clean the denitration catalyst to be cleaned.

As preferred technical scheme, wash the subassembly bottom and be equipped with drainage subassembly, drainage subassembly includes: the water receiving tray and the water collecting tank are arranged oppositely, the water receiving tray is of an inclined structure, and the water receiving tray is communicated with the water collecting tank.

According to a preferable technical scheme, a compressed air bubble is arranged in the water collecting tank, a compressed air storage tank is arranged on one outer side of the water collecting tank, the compressed air storage tank is communicated with the compressed air bubble through a bubble pipe, and an air inlet valve is connected to the bubble pipe.

As a preferred technical scheme, a sewage pump is arranged on the other outer side of the water collecting tank, the water collecting tank is connected with the sewage pump through a sewage pipeline, and a gate valve is arranged on the sewage pipeline.

Drawings

FIG. 1 is a front view of an automatic spray structure for denitration catalyst regeneration;

FIG. 2 is a side view of an automatic spray structure for denitration catalyst regeneration;

FIG. 3 is a top view of an automatic spray structure for denitration catalyst regeneration;

FIG. 4 is a flow chart of the operation of a liquid discharge assembly in an automatic spray configuration for denitration catalyst regeneration;

fig. 5 is a structural view of a middle main control cabinet of an automatic spray structure for denitration catalyst regeneration.

Wherein: 1-cleaning the component; 2-a laser identifier; 3-a conveying assembly; 4-conveying a driving member; 5-a transmission; 6-moving the trolley entrance lifting plate; 7-moving the trolley exit lifter plate; 8-hand hoist; 9-a nozzle holder; 10-lifting rope; 11-a spray pipe; 12-a metal hose; 13-a spray pump; 14-pressure gauge; 15-a water storage tank; 16-a first water inlet pipe; 17-a water inlet valve; 18-moving the trolley; 19-a denitration catalyst to be cleaned; 20-a drainage assembly; 21-a water collecting tank; 22-a bubbling tube; 23-an intake valve; 24-a sewage pump; 25-a gate valve; 26-a sewage draining pipeline; 27-nozzle holder slots; 28-a main control cabinet; 281-spray cleaning start button; 282-spray rinse off button; 283-moving trolley conveying starting button; 284-dolly return button; 285-bubbling drain on button; 286-bubbling drain off button; 287-a power-on button of an automatic spray structure for denitration catalyst regeneration; 288-power off button of the automatic spray structure for denitration catalyst regeneration.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

It is understood that the utility model discloses a reach the purpose of the utility model through some embodiments, as shown in fig. 1-3, an automatic spray structure for denitration catalyst regeneration includes: the cleaning assembly 1 is a cleaning operation area for the denitration catalyst to be cleaned, the cleaning assembly 1 is preferably made of SUS304 stainless steel, the cleaning assembly 1 is welded on four sides of the cavity, a moving trolley inlet and a moving trolley outlet are arranged on the side wall of the cleaning assembly 1, the moving trolley inlet is movably connected with a moving trolley inlet lifting plate 6, the moving trolley outlet is movably connected with a moving trolley outlet lifting plate 7, when the denitration catalyst to be cleaned is pre-cleaned, the denitration catalyst 19 to be cleaned is hoisted onto a moving trolley 18, the moving trolley 18 enters the inner cavity of the cleaning assembly 1 from the moving trolley inlet, the moving trolley inlet lifting plate 6 descends until the moving trolley inlet is sealed, the moving trolley outlet lifting plate 7 descends until the moving trolley inlet is sealed, and the sealing of the moving trolley inlet lifting plate 6 and the moving trolley outlet lifting plate 7 mainly plays a role in cleaning denitration The catalyst prevents the cleaning liquid from splashing in the pre-cleaning process; the top wall of the cleaning assembly 1 is a movable sealing cover plate, a manual hoist 8 is connected to the inner top wall of the cleaning assembly 1, a spray pipe support 9 is arranged inside the cleaning assembly 1, the manual hoist 8 is connected with the spray pipe support 9 through a lifting rope 10, a spray pipe support clamping groove 27 is formed in the side wall of the cleaning assembly 1, the manual hoist 8 drives the spray pipe support 9 to lift through the lifting rope 10, when the spray pipe support 9 is lifted to a proper spray cleaning position, the spray pipe support 9 is clamped with the spray pipe support clamping groove 27, the height of the denitration catalyst 19 to be cleaned is preferably 900 mm-1600 mm, the lifting range of the spray pipe support 9 is preferably 1100-1800 mm away from the upper surface of the movable trolley 18, and the denitration catalyst 19 to be cleaned is suitable for spray cleaning of the denitration catalysts 19 to be cleaned at different heights; a liquid discharge assembly 20 is arranged below the conveying assembly 3, and the liquid discharge assembly 20 comprises: the cleaning assembly 20 is provided with a cleaning assembly (not shown), the cleaning assembly is provided with a water collecting tray (not shown), the water collecting tray (not shown) is arranged opposite to the cleaning assembly 20 and used for collecting sewage in the spraying and cleaning process, the water collecting tray (not shown) is connected with the water collecting tank 21, and the water collecting tray (not shown) is of an inclined structure and is convenient for draining the spraying sewage into the water collecting tank 21 through the water collecting tray (not shown).

Wash 1 inside center of subassembly and be equipped with two row at least spray tubes 11 along treating abluent denitration catalyst 19 width direction, spray tube 11 sets up on spray tube support 9, every row of spray tube 11 is the cross distribution, cross distribution's spray tube 11 can reduce the blind area that sprays when treating abluent denitration catalyst 19 through wasing subassembly 1, spray tube 11 interval 100mm, 42 spray tubes 11 in total, the preferred stainless steel material of nozzle on the spray tube 11, spray tube 11 considers jet distance and blowout rigidity when setting up, guarantee to treat abluent denitration catalyst cleaning performance.

The preferred SUS304 of 11 materials of spray tube, 11 sealed preferred teflon of spray tube can slow down long-time running in-process, and 11 corrosion of spray tube and interface leak the scheduling problem, and spray tube 11 adopts removable quick connection on spray tube support 9, the convenient adjustment of overhauing.

The spray pipe 11 is connected with a spray pump 13 through a metal hose 12, the metal hose 12 is connected with a pressure gauge 14, the spray pump 13 is connected with a water storage tank 15 through a first water inlet pipeline 16, the first water inlet pipeline 16 is connected with a water inlet valve 17, the spray pump 13 is preferably a vertical stainless steel centrifugal pump, the maximum lift is 180m, and the flow is more than 16m³And the pressure gauge 14 is used for alarming when the water inlet pressure is abnormal, the spraying pump 13 is connected with the spraying pipe 11 through the metal hose 12, and the metal hose 12 is convenient to adjust the height of the spraying pipe 11.

The cleaning assembly comprises a cleaning assembly 1, and is characterized in that one end of the cleaning assembly 1 is provided with a laser identifier 2, the other end of the cleaning assembly 1 is provided with at least two conveying assemblies 3, the conveying assemblies 3 are used for conveying a moving trolley 18 into the cleaning assembly 1 for cleaning, the conveying assemblies 3 are connected with a conveying driving piece 4, the conveying driving piece 4 is connected with a speed changer 5, the laser identifier 2 is electrically connected with a control unit (not shown), the control unit (not shown) is electrically connected with the speed changer 5, the speed changer 5 is electrically connected with the conveying driving piece 4 and used for adjusting the speed of the conveying assembly 3 for conveying the moving trolley 18, the conveying assemblies 3 sequentially penetrate through a moving trolley inlet and a moving trolley outlet, and a pulley of the moving trolley 18 is connected with a conveying chain in a sliding manner.

Firstly, determining the height of a spray pipe support 9 according to the height of a denitration catalyst 19 to be cleaned, preferably selecting the position 200mm above the denitration catalyst 19 to be cleaned by the height of a spray pipe 11, pulling the spray pipe support 9 through a manual hoist 8 fixed on the inner top wall of a cleaning assembly 1 for adjustment, and fixedly clamping two ends of the spray pipe support 9 in a spray pipe support clamping groove 27 after pulling the spray pipe support 9 to a proper height; checking whether the movable trolley 18 is returned and the water level of the water storage tank 15, when cleaning the denitration catalyst 19 to be cleaned, hoisting the denitration catalyst 19 to be cleaned to the movable trolley 18, enabling the denitration catalyst 19 to be cleaned on the movable trolley 18 to enter the inner cavity of the cleaning component 1 from the inlet of the movable trolley through the conveying component 3, enabling the lifting plate 6 at the inlet of the movable trolley to descend until the inlet of the movable trolley is sealed, enabling the lifting plate 7 at the outlet of the movable trolley to descend until the outlet of the movable trolley is sealed, conveying the movable trolley through the conveying component to pass through the cleaning spraying station, opening a spraying cleaning opening button 281 on the main control cabinet 28 when the movable trolley is conveyed through the spraying station, spraying and cleaning the denitration catalyst 19 to be cleaned through a high-pressure water column sprayed from a nozzle 11, and opening a spraying cleaning closing button 282 on the main control cabinet 28 when the movable trolley is conveyed away from the spraying station, after cleaning of the denitration catalyst is finished, the lifting plate 7 at the outlet of the movable trolley ascends until the outlet of the movable trolley is opened, the movable trolley 18 filled with the cleaned denitration catalyst is conveyed out of the cleaning component 1 from the outlet of the movable trolley through the conveying component 3, the pre-cleaning operation is finished, the laser identifier 2 judges the ash blockage degree of the denitration catalyst 19 to be cleaned conveyed through the cleaning spraying station, the laser identifier 2 transmits the judged ash blockage degree data of the denitration catalyst 19 to be cleaned to the control unit, the control unit controls the speed changer 5 to adjust the rotating speed of the conveying driving piece 4 according to the ash blockage degree of the denitration catalyst 19 to be cleaned so as to adjust the speed of the conveying driving piece 3 for conveying the movable trolley 18, and when the laser identifier 2 judges that the ash blockage degree of the denitration catalyst 19 to be cleaned is serious, the control unit (not shown) controls the speed changer 5 to adjust the speed and reduce the rotating speed of the conveying driving piece 4 so as to reduce the rotating speed of the conveying driving piece 18 conveyed by the conveying component 3 When the laser identifier 2 determines that the denitration catalyst 19 to be cleaned is not seriously blocked by ash, the control unit (not shown) controls the transmission 5 to increase the rotating speed of the conveying driving part 4 so as to increase the speed of the conveying component 3 for conveying the movable trolley 18, and accelerates the time of the movable trolley 18 passing through the cleaning spraying station of the cleaning component 1, so that the using amount of pre-cleaning liquid is reduced, and the cleaning efficiency is improved. The waste water generated by automatic spraying of the traditional denitration catalyst regeneration is 24t/d, the invention provides an automatic spraying structure for denitration catalyst regeneration, the generated waste water is about 2-4 t/d, the using amount of pre-cleaning liquid is less, and the cost of pre-cleaning the denitration catalyst is reduced.

The conveying assembly 3 is arranged above the liquid discharge assembly 20, and the conveying assembly 3 comprises: a conveying chain (not shown) and at least two sets of conveying tracks (not shown), wherein the conveying chain (not shown) is arranged between the conveying tracks (not shown), and in order to prevent the conveying chain (not shown) from loosening, a tensioning piece (not shown) is arranged on the conveying chain (not shown); the conveyor track (not shown) is preferably stainless steel.

As shown in fig. 4, the bottom of the cleaning assembly 1 is provided with a drainage assembly 20, and the drainage assembly 20 comprises: a water receiving tray (not shown) which is arranged opposite to the cleaning assembly 1, is of an inclined structure, and is communicated with the water collecting tank 21; a compressed air bubble (not shown) is arranged in the water collecting tank 21, a compressed air storage tank (not shown) is arranged on one outer side of the water collecting tank 21, the compressed air storage tank (not shown) is communicated with the compressed air bubble (not shown) through a bubble pipe 22, and an air inlet valve 23 is connected to the bubble pipe 22; a sewage pump 24 is arranged on the other outer side of the water collecting tank 21, the water collecting tank 21 is connected with the sewage pump 24 through a sewage pipeline 26, and a gate valve 25 is arranged on the sewage pipeline 26; the sewage after spraying and pre-cleaning is collected through a water receiving tray (not shown), the sewage after spraying and cleaning collected in the water receiving tray (not shown) flows into a water collecting tank 21 due to the fact that the water receiving tray (not shown) is of an inclined structure, the water collecting tank 21 is preferably welded by stainless steel, compressed air bubbles (not shown) are arranged at the bottom of the water collecting tank 21, sewage disturbance at the bottom of the water collecting tank is increased, less sludge in the sewage is deposited at the bottom of the water collecting tank 21, and the pressure of compressed air is larger than 0.6 MPa; the bottom of the water collecting tank 21 is provided with an inclined angle, so that sewage can be conveniently discharged; set up dredge pump 24 in the outer frame of header tank 21, dredge pump 24 both ends set up gate valve 25 respectively, conveniently discharge sewage.

As shown in fig. 5, the control unit is arranged in a main control cabinet near an automatic spray structure for denitration catalyst regeneration, a main power supply 380V, an operation control loop AC220V, the main control cabinet is provided with a spray cleaning on button 281, a spray cleaning off button 282, a trolley conveying on button 283, a trolley return button 284, a bubbling liquid discharge on button 285, a bubbling liquid discharge off button 286, a power on button 287 of the automatic spray structure for denitration catalyst regeneration, a power off button 288 of the automatic spray structure for denitration catalyst regeneration, a power on button 287 for triggering the automatic spray structure and a power off button 288 of the automatic spray structure for triggering denitration catalyst regeneration control the power on and off operation of the automatic spray structure for denitration catalyst regeneration through the control unit, a spray cleaning on button 281 and a spray cleaning off button 282 control the on and off operation of spray cleaning through the control unit, the control unit is electrically connected with the transmission, and the transmission is controlled by the control unit to adjust the speed of the conveying component for conveying the moving trolley.

The invention provides an automatic spraying structure for denitration catalyst regeneration, which has the following beneficial effects:

1) the invention provides an automatic spraying structure for denitration catalyst regeneration, which adopts a height-adjustable spray pipe, wherein nozzles on the spray pipe are arranged in a cross mode, so that the spraying and cleaning rigidity is increased, the spraying and cleaning blind areas are reduced, the cleaning effect is ensured, and the effective removal of ash blockage at the periphery of a denitration catalyst to be cleaned, on the surface of the denitration catalyst to be cleaned and in a pore channel of the denitration catalyst to be cleaned is realized.

2) The invention provides an automatic spraying structure for denitration catalyst regeneration, which is characterized in that a conveying assembly is used for conveying a movable trolley, a speed changer is used for adjusting the rotating speed of a conveying driving piece according to the ash blockage degree of a denitration catalyst to be cleaned so as to adjust the speed of the conveying movable trolley of the conveying assembly, control the spraying time and control the using amount of a pre-cleaning liquid.

3) The invention provides an automatic spraying structure for denitration catalyst regeneration, wherein sewage after spraying and cleaning is collected through a water receiving tray, the sewage after spraying and cleaning collected in the water receiving tray flows into a water collecting tank due to the inclined structure of the water receiving tray, compressed air bubbles are arranged at the bottom of the water collecting tank to disturb the sewage at the bottom of the water collecting tank, and sludge in the sewage is reduced to be deposited at the bottom of the water collecting tank.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not to be limited to the specific embodiments disclosed herein, and all modifications and equivalents that fall within the scope of the claims of the present application are intended to be embraced therein. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides an automatic spray structure for denitration catalyst regeneration which characterized in that includes: the denitration catalyst cleaning device comprises a cleaning component and a moving trolley, wherein denitration catalysts to be cleaned are filled on the moving trolley, a laser identifier is arranged at one end of the cleaning component, a conveying component is arranged at the other end of the cleaning component and used for conveying the moving trolley into the cleaning component, the conveying component is connected with a conveying driving piece, the conveying driving piece is connected with a speed changer, the laser identifier is electrically connected with a control unit, the control unit is electrically connected with the speed changer, and the speed changer is electrically connected with the conveying driving piece and used for regulating and controlling the speed of the moving trolley conveyed by the conveying component.

2. The automatic spraying structure for denitration catalyst regeneration of claim 1, wherein a moving trolley inlet and a moving trolley outlet are arranged on the side wall of the cleaning component, the conveying component sequentially passes through the moving trolley inlet and the moving trolley outlet, the moving trolley inlet is movably connected with a moving trolley inlet lifting plate, and the moving trolley outlet is movably connected with a moving trolley outlet lifting plate.

3. The automatic spraying structure for denitration catalyst regeneration of claim 1, wherein a hand-operated block is connected to the top wall of the cleaning assembly, a spray pipe support is arranged inside the cleaning assembly, and the hand-operated block is connected with the spray pipe support through a lifting rope.

4. The automatic spraying structure for denitration catalyst regeneration of claim 3, wherein a spray pipe bracket clamping groove is formed in a side wall of the cleaning assembly, and the spray pipe bracket is clamped with the spray pipe bracket clamping groove.

5. The automatic spraying structure for denitration catalyst regeneration of claim 4, wherein a plurality of rows of spray pipes are arranged on the spray pipe support, and each row of spray pipes are distributed in a cross manner.

6. The automatic spraying structure for denitration catalyst regeneration of claim 5, wherein the spray pipe is connected with a spraying pump through a metal hose, the metal hose is connected with a pressure gauge, the spraying pump is connected with a water storage tank through a first water inlet pipeline, and the first water inlet pipeline is connected with a water inlet valve.

7. The automatic spraying structure for denitration catalyst regeneration of claim 5, wherein a moving trolley is connected to the conveying assembly in a sliding manner, and the spraying pipe corresponds to the moving trolley and is matched with the moving trolley to perform spraying and cleaning on the denitration catalyst to be cleaned.

8. The automatic spray structure for denitration catalyst regeneration of claim 1, wherein a liquid discharge assembly is arranged at the bottom of the cleaning assembly, and comprises: the water receiving tray and the water collecting tank are arranged oppositely, the water receiving tray is of an inclined structure, and the water receiving tray is communicated with the water collecting tank.

9. The automatic spraying structure for regenerating a denitration catalyst according to claim 8, wherein a compressed air bubble is provided inside the water collection tank, a compressed air storage tank is provided outside the water collection tank, the compressed air storage tank is communicated with the compressed air bubble through a bubble pipe, and an air inlet valve is connected to the bubble pipe.

10. The automatic spray structure for denitration catalyst regeneration of claim 9, wherein a sewage pump is provided at the other outer side of the water collection tank, the water collection tank is connected with the sewage pump through a sewage pipeline, and a gate valve is provided on the sewage pipeline.