CN212622031U

CN212622031U - Testing arrangement of resistant abrasion ability of corrugated denitration catalyst

Info

Publication number: CN212622031U
Application number: CN202021573098.7U
Authority: CN
Inventors: 杨莎莎; 刘炜; 薛璐; 肖雷; 侯康杰; 范强; 杨红娟
Original assignee: Qiyuan Xi'an Darong Environmental Protection Technology Co ltd
Current assignee: Qiyuan Xi'an Darong Environmental Protection Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-02-26
Anticipated expiration: 2030-07-31

Abstract

The utility model belongs to the technical field of flue gas denitration, and relates to a testing device for abrasion resistance of a corrugated denitration catalyst, which comprises a fixed support, wherein an automatic feeding device, a feed supplementing bin, a feeding machine and a mixing pipeline are sequentially distributed on the fixed support from top to bottom; the inlet of the mixing pipeline is connected with the first centrifugal fan, the air speed measuring instrument and the air speed adjusting device are installed at the inlet of the mixing pipeline, air enters the whole testing device from the inlet of the mixing pipeline under the action of negative pressure, and the air speed is controlled by the air speed measuring instrument and the air speed adjusting device; by adding the design of the collector and the abrasive collecting barrel, the abrasive is collected by the abrasive collecting barrel for recycling; according to the testing device, the mixing pipeline is horizontally placed, the influence on a testing result caused by uneven wind speed under vertical gravity is avoided, and the defect of the wear resistance test of the domestic corrugated catalyst is overcome.

Description

Testing arrangement of resistant abrasion ability of corrugated denitration catalyst

Technical Field

The utility model belongs to the technical field of flue gas denitration, a testing arrangement of corrugated denitration catalyst stand wear and tear ability is related to.

Background

With the development of economic technology, thermal power generation still occupies a great position in national production, and nitrogen oxide discharged by thermal power plants becomes one of main pollutants of atmospheric environment, so that the SCR denitration catalyst for removing the nitrogen oxide is widely applied to domestic power plants. As the smoke dust content of domestic thermal power plants is higher, the abrasion resistance of the catalyst becomes an important index for measuring the performance of the catalyst.

The normal operation of the denitration reactor can be directly influenced by the mechanical properties such as the abrasion resistance of the catalyst, and if the abrasion resistance of the catalyst does not meet the design requirement, the catalyst is difficult to bear the scouring of fly ash and larger air flow, so that the whole denitration efficiency of the catalyst is directly influenced, and the catalyst cannot be regenerated after being inactivated. The conventional denitration catalyst abrasion resistance testing device mainly aims at flat plate type and honeycomb type denitration catalysts, and cannot meet the requirement for testing the abrasion resistance of the corrugated type denitration catalyst.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a testing arrangement of ripple formula denitration catalyst stand wear and tear ability, can accomplish the erosion capability test of ripple formula denitration catalyst under the condition of regulation particle diameter solid particle, solid particle flow, air velocity, satisfy the test demand.

The utility model aims at solving through the following technical scheme:

the testing device for the wear resistance of the corrugated denitration catalyst comprises a fixed support, wherein an automatic feeding device, a material supplementing bin, a feeding machine and a mixing pipeline are sequentially distributed on the fixed support from top to bottom; the automatic feeding device is used for feeding a material supplementing bin, a discharge port of the material supplementing bin is communicated with a feeding port of the feeding machine, and a discharge port of the feeding machine is communicated with the mixing pipeline; the inlet of the mixing pipeline is connected with a first centrifugal fan, and an air speed measuring instrument and an air speed adjusting device which are respectively connected with a controller in a control cabinet are installed at the inlet of the mixing pipeline; a sample testing area is arranged in the mixing pipeline, a first opening is formed in the sample testing area, an openable cover is hermetically mounted at the first opening, and a sample to be tested is placed in the sample testing area; the outlet of the mixing pipeline is communicated with the inlet on one side of the collector, the top of the collector is also provided with an air outlet, and the air outlet is connected with the second centrifugal fan through an exhaust pipeline.

Further, automatic material conveying device is including installing in the electric hoist at fixed bolster top, the one end and the abrasive material storage bucket of electric hoist are connected, the bottom that the abrasive material stored the bucket is equipped with first discharge valve, first discharge valve is connected with the controller in the switch board.

Furthermore, the bottom of the feed supplementing bin is provided with a second discharge valve, and the second discharge valve is connected with a controller in the control cabinet.

Further, the inside of batcher is provided with the position sensor subassembly, the position sensor subassembly is including being located the first position sensor of batcher primary importance, being located the second position sensor of batcher secondary importance, first position sensor, second position sensor are connected with the controller in the switch board respectively.

Further, the bottom of collector is equipped with the second opening, the second opening is connected with the abrasive collecting vessel through the unloading pipe.

Further, the discharge port of the feeder is communicated with the mixing pipeline through a discharging pipe.

Furthermore, a filter screen is arranged in the collector.

Furthermore, one side of the fixed support is provided with a ladder stand.

Further, the adjusting range of the wind speed adjusting device is not more than 20 m/s.

Furthermore, the grinding material of the testing device adopts silicon carbide sand.

Compared with the prior art, the utility model provides a technical scheme includes following beneficial effect: the inlet of the mixing pipeline is connected with the first centrifugal fan, the air speed measuring instrument and the air speed adjusting device are installed at the inlet of the mixing pipeline, air enters the whole testing device from the inlet of the mixing pipeline under the action of negative pressure, and the air speed is controlled by the air speed measuring instrument and the air speed adjusting device; by adding the design of the collector and the abrasive collecting barrel, the abrasive is collected by the abrasive collecting barrel for recycling; according to the testing device, the mixing pipeline is horizontally placed, and the influence on a testing result caused by uneven wind speed under vertical gravity is avoided.

On the other hand, through the design to the automatic material conveying device structure, first discharge valve opens/closes under the effect of controller to reach the mesh to feed supplement storehouse automatic material conveying.

In another aspect, the second discharging valve is arranged at the bottom of the feeding bin and connected with the controller in the control cabinet, and the second discharging valve is opened/closed under the action of the controller, so that the purpose of automatically feeding the feeder is achieved.

In addition, a first position sensor and a second position sensor are arranged in the feeder, the first position sensor is arranged at a first position (high material level), the second position sensor is arranged at a second position (low material level), and the two position sensors are respectively connected with the controller; when the abrasive in the feeder reaches a low material level, the second position sensor feeds back the material level information to the controller, the controller opens a second discharge valve of the material supplementing bin according to the received material level information to supplement materials, and feeding is not stopped during material supplementing; when the abrasive in the feeder reaches a high material level, the first position sensor feeds back the material level information to the controller, and the controller closes the second discharge valve of the material supplementing bin according to the received material level information to stop material supplementing, so that the purpose of automatically supplementing the material to the material supplementing bin is achieved.

Finally, through the design of installing the filter screen in the collector, can filter the abrasive material that falls into in the collector, the abrasive material after the filtration is collected by the abrasive material collecting vessel and can be recycled, and clean air gets into the fan from the collector air outlet and is discharged into the atmosphere.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a device for testing abrasion resistance of a corrugated denitration catalyst provided by the present invention;

fig. 2 is the utility model provides a corrugated denitration catalyst stand wear and tear ability's testing arrangement's connection block diagram.

Wherein: 1. fixing a bracket; 2. an automatic feeding device; 3. a material supplementing bin; 4. a feeder; 5. a mixing duct; 6. a wind speed measuring instrument; 7. a wind speed adjusting device; 8. a sample testing zone; 9. a cover; 10. a collector; 11. an air outlet; 12. an exhaust duct; 13. a second centrifugal fan; 14. an electric hoist; 15. an abrasive storage bucket; 16. a first discharge valve; 17. a controller; 18. a second discharge valve; 19. a first position sensor; 20. a second position sensor; 21. an abrasive collection barrel; 22. a discharging pipe; 23. a filter screen; 24. the ladder is climbed.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the following claims.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments.

Examples

Referring to fig. 1-2, the utility model provides a testing device for abrasion resistance of a corrugated denitration catalyst, which comprises a fixed support 1, wherein the fixed support 1 is sequentially provided with an automatic feeding device 2, a material supplementing bin 3, a feeding machine 4 and a mixing pipeline 5 from top to bottom; the automatic feeding device 2 is used for feeding the material supplementing bin 3, a discharge port of the material supplementing bin 3 is communicated with a feeding port of the feeder 4, and a discharge port of the feeder 4 is communicated with the mixing pipeline 5; the inlet of the mixing pipeline 5 is connected with a first centrifugal fan, and the inlet of the mixing pipeline 5 is provided with an air speed measuring instrument 6 and an air speed adjusting device 7 which are respectively connected with a controller 17 in a control cabinet; a sample testing area 8 is arranged in the mixing pipeline 5, the sample testing area 8 is provided with a first opening, an openable cover 9 is hermetically arranged at the first opening, the cover 9 is opened, and a sample to be tested is placed in the sample testing area 8; the outlet of the mixing pipeline 5 is communicated with the inlet on one side of the collector 10, the top of the collector 10 is also provided with an air outlet 11, and the air outlet 11 is connected with a second centrifugal fan 13 through an exhaust pipeline 12.

Optionally, the sample test zone 8 is located in the middle of the mixing duct 5.

Further, automatic material conveying device 2 is including installing in the electric hoist 14 at fixed bolster 1 top, and the one end and the abrasive storage bucket 15 of electric hoist 14 are connected, and the bottom of abrasive storage bucket 15 is equipped with first discharge valve 16, and first discharge valve 16 is connected with controller 17 in the switch board, and first discharge valve 16 is opened/closed under controller 17's effect to reach the purpose to feed supplement storehouse 3 automatic material conveying.

Further, a second discharge valve 18 is arranged at the bottom of the feed supplementing bin 3, the second discharge valve 18 is connected with a controller 17 in the control cabinet, and the second discharge valve 18 is opened/closed under the action of the controller 17, so that the purpose of automatically feeding the feeder 4 is achieved.

Further, the inside of batcher 4 is provided with the position sensor subassembly, and the position sensor subassembly includes that the first position sensor 19 that is located batcher 4 primary importance, the second position sensor 20 that is located batcher 4 secondary importance, and first position sensor 19, second position sensor 20 are connected with controller 17 in the switch board respectively. Wherein the first position corresponds to a high level of material and the second position corresponds to a low level of material; when the abrasive in the feeder 4 reaches a low material level, the second position sensor 20 feeds back the material level information to the controller 17, the controller 17 opens the second discharge valve 18 of the material supplementing bin 3 to supplement the material according to the received material level information, and feeding is not stopped during material supplementing; when the abrasive in the feeder 4 reaches a high material level, the first position sensor 19 feeds back the material level information to the controller 17, and the controller 17 closes the second discharge valve 18 of the material supplementing bin 3 to stop material supplementing according to the received material level information, so that the purpose of automatically supplementing the material to the material supplementing bin 3 is achieved. If the apparatus is operated for a long time, the volumes of the replenishing bin 3 and the abrasive collecting bucket 21 can be increased to reduce the loading frequency.

Further, the bottom of the collector 10 is provided with a second opening, the second opening is connected with the abrasive collecting barrel 21 through a discharging pipe 22, and the abrasives falling into the collector 10 are collected by the abrasive collecting barrel 21 and can be recycled.

Further, the discharge port of the feeder 4 is communicated with the mixing pipeline 5 through a discharge pipe 22.

Further, a filter screen 23 is installed in the collector 10 to filter the abrasives in the collector 10.

Furthermore, one side of the fixed support 1 is provided with a ladder stand 24, so that the operator can maintain the whole testing device conveniently.

Further, the adjusting range of the wind speed adjusting device 7 is not more than 20 m/s.

In conclusion, in the testing device for the wear resistance of the corrugated denitration catalyst, the feeder 4 is preferably a constant feeder, the capacity of a bin of the constant feeder is about 40 liters, the constant feeder is provided with the feeding bin 3 with larger capacity at the upper part due to the limitation of the capacity of the bin, the corresponding position sensor is arranged at a high material level and a low material level on the inner wall of the constant feeder, abrasive is automatically supplemented from the feeding bin 3 at the low material level, the abrasive is stopped being supplemented when the high material level is reached, and the feeding is not stopped during the abrasive supplementing period. The wind speed adjusting device 7 is preferably a valve, the total length of the whole device is about 5.5 meters, the total height of the device is about 4 meters, silicon carbide sand with a certain specification is selected as an abrasive, and erosion performance test is carried out under the conditions of specified particle size, solid particles, solid particle flow and air flow speed, so that the product quality is ensured, and the test cost is reduced; the controller 17 in the control cabinet controls the whole testing device to complete the operations of automatic operation of all equipment, wind speed display and control, test time setting and the like.

The specific working process of the whole testing device is as follows: the air speed measuring instrument 6 and the air speed adjusting device 7 are arranged at the inlet of the mixing pipeline 5, the controller 17 controls the air inflow into the mixing pipeline 5 through a control valve, and the air speed can be controlled by adjusting the air quantity because the sectional area inside the mixing pipeline 5 is fixed; a first centrifugal fan is adopted to provide system air, and air enters from an inlet (air inlet) of the mixing pipeline 5 under the action of negative pressure; an electric hoist 14 in the automatic feeding device 2 is connected with a controller 17 in a control cabinet, an operator can set certain interval time to feed materials into the material feeding bin 3, when the materials are fed, the controller 17 controls the electric hoist 14 to move, the electric hoist 14 drives the abrasive material storage barrel 15 to move to the position above the material feeding bin 3, and at the moment, the controller 17 controls a first discharging valve 16 to be opened, so that the materials are fed into the material feeding bin 3; the feeding bin 3 uniformly adds the grinding materials into the mixing pipeline 5 through the quantitative feeder, the wind speed in the mixing pipeline 5 quickly reaches the set wind speed, the air and the grinding materials are fully mixed, and the wear resistance test of the corrugated denitration catalyst sample is carried out after the air and the grinding materials pass through the sample test area 8 according to the set speed; then enters the collector 10, the abrasive in the collector 10 is filtered by the filter screen 23 and falls into the abrasive collecting barrel 21 to be collected for recycling, and clean air enters the fan from the air outlet 11 of the collector 10 and is exhausted into the atmosphere.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. The testing device for the wear resistance of the corrugated denitration catalyst is characterized by comprising a fixed support (1), wherein an automatic feeding device (2), a material supplementing bin (3), a feeding machine (4) and a mixing pipeline (5) are sequentially distributed on the fixed support (1) from top to bottom;

the automatic feeding device (2) is used for feeding a feeding bin (3), a discharge hole of the feeding bin (3) is communicated with a feeding hole of a feeding machine (4), and a discharge hole of the feeding machine (4) is communicated with a mixing pipeline (5);

an inlet of the mixing pipeline (5) is connected with a first centrifugal fan, and an air speed measuring instrument (6) and an air speed adjusting device (7) which are respectively connected with a controller (17) in a control cabinet are installed at the inlet of the mixing pipeline (5);

a sample testing area (8) is arranged in the mixing pipeline (5), the sample testing area (8) is provided with a first opening, an openable cover (9) is hermetically mounted at the first opening, and a sample to be tested is placed in the sample testing area (8);

the outlet of the mixing pipeline (5) is communicated with the inlet on one side of the collector (10), the top of the collector (10) is also provided with an air outlet (11), and the air outlet (11) is connected with a second centrifugal fan (13) through an exhaust pipeline (12).

2. The testing device according to claim 1, characterized in that the automatic feeding device (2) comprises an electric hoist (14) mounted on the top of the fixed support (1), one end of the electric hoist (14) is connected with an abrasive storage barrel (15), the bottom of the abrasive storage barrel (15) is provided with a first discharging valve (16), and the first discharging valve (16) is connected with a controller (17) in a control cabinet.

3. The testing device according to claim 1, characterized in that the bottom of the replenishing bin (3) is provided with a second discharge valve (18), and the second discharge valve (18) is connected with a controller (17) in a control cabinet.

4. A testing device according to claim 1, characterized in that the feeder (4) is internally provided with a position sensor assembly, the position sensor assembly comprises a first position sensor (19) at a first position of the feeder (4) and a second position sensor (20) at a second position of the feeder (4), and the first position sensor (19) and the second position sensor (20) are respectively connected with a controller (17) in a control cabinet.

5. Testing device according to claim 1, characterized in that the bottom of the collector (10) is provided with a second opening, which is connected to an abrasive collecting bucket (21) through a discharge pipe (22).

6. A test device according to claim 5, characterized in that a filter screen (23) is mounted in the collector (10).

7. Testing device according to claim 1, characterized in that the discharge opening of the feeding machine (4) communicates with the mixing duct (5) through a discharge pipe (22).

8. A test device according to any one of claims 1-7, characterized in that a ladder (24) is arranged on one side of the stationary support (1).

9. Testing device according to any of claims 1-7, characterized in that the adjustment range of the wind speed adjusting device (7) is not more than 20 m/s.

10. The test device according to any one of claims 1 to 7, wherein the abrasive of the test device is silicon carbide sand.