CN220455092U - SCR denitration catalyst module supports net piece abrasion strength testing arrangement - Google Patents
SCR denitration catalyst module supports net piece abrasion strength testing arrangement Download PDFInfo
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- CN220455092U CN220455092U CN202321315649.3U CN202321315649U CN220455092U CN 220455092 U CN220455092 U CN 220455092U CN 202321315649 U CN202321315649 U CN 202321315649U CN 220455092 U CN220455092 U CN 220455092U
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- 238000012360 testing method Methods 0.000 title claims abstract description 134
- 239000003054 catalyst Substances 0.000 title claims abstract description 72
- 238000005299 abrasion Methods 0.000 title claims abstract description 64
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims description 49
- 238000005303 weighing Methods 0.000 claims description 46
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 7
- 239000003082 abrasive agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 28
- 230000008569 process Effects 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 72
- 239000006004 Quartz sand Substances 0.000 description 30
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 20
- 239000000463 material Substances 0.000 description 19
- 238000001035 drying Methods 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 10
- 238000007664 blowing Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910000617 Mangalloy Inorganic materials 0.000 description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
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- 239000003345 natural gas Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
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- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to the technical field of abrasion strength testing devices, in particular to an SCR denitration catalyst module supporting net piece abrasion strength testing device, which comprises a blower, a testing pipeline and an automatic feeding device; the air supply outlet of forced draught blower with test pipeline's air intake connection, test pipeline's air outlet is connected with wearing agent collection device, test pipeline top the feed inlet with automatic feeder's discharge gate is connected, be provided with the removable cover on test pipeline's the side, test pipeline is located be provided with the fixed knot who supports the net piece on the internal surface around the removable cover. By means of the device, the supporting net piece is fixed in the test pipeline, and the blower and the automatic feeding device are matched for use, so that the abrasion strength of the supporting net piece can be rapidly and accurately tested, the supporting net piece with the highest cost performance can be rapidly screened out in the practical application process, and the device has the advantages of being simple and convenient to operate and saving cost.
Description
Technical Field
The utility model relates to the technical field of abrasion strength testing devices, in particular to an SCR denitration catalyst module supporting net piece abrasion strength testing device.
Background
Nitrogen oxides (NOx) are one of the main pollutants emitted by humans into the atmosphere during production activities, mainly nitrogen monoxide, nitrogen dioxide, etc. Combustion source NOx is mainly derived from the combustion of fossil fuels, coal, oil, and natural gas, and NOx in flue gas is mainly in the form of NO, accounting for about 95% of the initial emissions. Nitrogen oxide (NOx) emissions can cause acid rain, photochemical smog ozone layer destruction, and many other environmental problems, which are a major threat to human health. The abundant coal reserves and the poor petroleum and natural gas resources in China lead to the fact that the thermal power plant which is absolutely dominant in the power supply field in China can only use coal as main fuel, and the current situation is difficult to change in a short period. According to statistics, the NOx discharged by coal combustion in China accounts for 70% of the total fuel discharge, and the national environmental statistics annual authentication data show that the NOx discharge amount reaches 1970 ten thousand tons in the year 2020.
NH 3 Selective catalytic reduction (SCR: selective Catalytic Reduction) method, abbreviated as NH 3 SCR, the most mature and widespread denitration technique currently in use. The export of various environmental protection new policies promotes the large-scale popularization of the SCR technology. The technology has the advantages of high efficiency, good selectivity, mature technology and the like, and is widely applied to thermal power coal-fired units. At present, in a domestic coal-fired power plant boiler flue gas denitration system, a metal oxide catalyst which takes anatase titanium dioxide as a carrier to load vanadium oxide as an active substance and tungsten oxide or molybdenum oxide as a cocatalyst is widely applied. NH (NH) 3 The key of SCR technology is high-performance denitration catalyst, and currently, V-W/TiO is widely used 2 As a flue gas denitration catalyst. The catalyst was first developed in the last 70 th century in countries such as japan and germany, and is gradually widely used in developed countries. The existing flue gas denitration catalyst mainly adopts a honeycomb SCR denitration catalyst, the finished catalyst product is generally packaged by an iron box, and a catalyst module supporting net sheet is arranged at the inlet of the iron box. According toAccording to the prior experience data, after the finished catalyst module is installed in a power plant, the mechanical strength of the catalyst module is one of the most main factors influencing the service life of the catalyst during the operation of the power plant, so that the abrasion strength of a supporting net sheet of the catalyst module can directly influence the service life of the catalyst except the mechanical strength of the catalyst per se for the whole finished catalyst module, and a testing device special for the abrasion strength of the supporting net sheet of the catalyst module is not available at home and abroad at present, so that the abrasion strength testing device for the supporting net sheet of the SCR denitration catalyst module is developed and has positive significance for catalyst production.
Disclosure of Invention
The utility model provides a device for testing the abrasion strength of a support net piece of an SCR denitration catalyst module, which aims to solve the problem that the abrasion strength of the support net piece of the denitration catalyst module cannot be accurately and efficiently tested in the prior art.
In order to achieve the above purpose, the utility model provides an SCR denitration catalyst module supporting net piece abrasion strength testing device, which comprises a blower, a testing pipeline and an automatic feeding device;
the air supply outlet of forced draught blower with test pipeline's air intake connection, test pipeline's air outlet is connected with wearing agent collection device, test pipeline top the feed inlet with automatic feeder's discharge gate is connected, be provided with the removable cover on test pipeline's the side, test pipeline is located be provided with the fixed knot who supports the net piece on the internal surface around the removable cover.
Preferably, the automatic feeding device comprises a sand weighing hopper;
the bottom of the sand weighing hopper is provided with a gate valve, two sides of the sand weighing hopper are symmetrically provided with support columns, one end, far away from the sand weighing hopper, of each support column is connected with a base, a weight sensor is arranged between each support column and each base, the weight sensor is electrically connected with a controller, and the controller is electrically connected with a display;
and a discharge hole at the bottom of the sand weighing hopper is connected with a feed inlet at the top of the test pipeline.
Preferably, the display is disposed on an end of the support column adjacent to the sand scale hopper.
Preferably, the automatic feeding device further comprises a conveying belt, one end of the conveying belt is located above the sand weighing hopper, and the other end of the conveying belt extends to the ground.
Preferably, the air blower comprises an air quantity adjusting mechanism, and the air quantity adjusting range of the air quantity adjusting mechanism is 1-30m/s.
Preferably, the inner surface of the test tube is a smooth surface.
Preferably, a cushion pad is arranged at the contact end of the fixing structure and the supporting net sheet, and the cushion pad is made of sponge.
Preferably, the fixing structure is a hook.
Preferably, the abradant collecting device is connected with a dust removing device.
Preferably, the support mesh is L-shaped, U-shaped or rectangular.
According to the technical scheme, the abrasion strength testing device for the support net piece of the SCR denitration catalyst module is based on the fact that the support net piece is fixed in the testing pipeline, and then the air feeder and the automatic feeding device are matched for use, so that the abrasion strength of the support net piece of the denitration catalyst module can be rapidly and accurately tested, the support net piece with the highest cost performance can be rapidly screened out in the practical application process, industrial application is facilitated, the overall production cost of the denitration catalyst can be reduced, the purchase and replacement cost of the denitration catalyst of a power plant is reduced, and the power assisting effect for environmental protection is achieved.
Drawings
FIG. 1 is a schematic structural diagram of an SCR denitration catalyst module support mesh abrasion strength testing device;
fig. 2 is a schematic structural diagram of an automatic feeding device of an SCR denitration catalyst module supporting mesh abrasion strength testing device.
Description of the reference numerals
A blower 1; a test pipe 2; an automatic feeding device 3; the sand hopper 31 is called; a gate valve 32;
a support column 33; a weight sensor 34; a base 35; a display 36; a movable cover plate 4;
a wearing agent collecting device 5; a dust removing device 6.
Detailed Description
The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The term "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, a possible presence or addition of one or more other features, elements, components, and/or combinations thereof.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The utility model provides an SCR denitration catalyst module supporting net piece abrasion strength testing device, which comprises a blower 1, a testing pipeline 2 and an automatic feeding device 3, as shown in figures 1-2;
the air supply outlet of forced draught blower 1 with the air intake connection of test pipeline 2, the air outlet of test pipeline 2 is connected with wearing agent collection device 5, the feed inlet at test pipeline 2 top with the discharge gate of automatic feeder 3 is connected, be provided with removable cover 4 on the side of test pipeline 2, test pipeline 2 is located be provided with the fixed knot who supports the net piece on the internal surface around the removable cover 4.
According to the technical scheme, the abrasion strength testing device for the support net piece of the SCR denitration catalyst module is based on the fact that the support net piece is fixed in the testing pipeline, and then the air feeder and the automatic feeding device are matched for use, so that the abrasion strength of the support net piece of the denitration catalyst module can be rapidly and accurately tested, the support net piece with the highest cost performance can be rapidly screened out in the practical application process, industrial application is facilitated, the overall production cost of the denitration catalyst can be reduced, the purchase and replacement cost of the denitration catalyst of a power plant is reduced, and the power assisting effect for environmental protection is achieved.
In a preferred mode, the automatic feeding device 3 comprises a sand hopper 31;
the bottom of the sand weighing hopper 31 is provided with a gate valve 32, two sides of the sand weighing hopper 31 are symmetrically provided with support columns 33, one end, away from the sand weighing hopper 31, of each support column 33 is connected with a base 35, a weight sensor 34 is arranged between each support column 33 and each base 35, the weight sensor 34 is electrically connected with a controller, and the controller is electrically connected with a display 36; the discharge port at the bottom of the sand weighing hopper 31 is connected with the feed port at the top of the test pipeline 2.
In the embodiment of the utility model, the weight sensor 34 is arranged to be electrically connected with the controller, and the controller is electrically connected with the display 36, so that the material feeding amount can be accurately controlled in the actual application process, and the influence on the efficiency caused by the fact that the material feeding amount with set quality is manually weighed and then added into the sand weighing hopper 31 is avoided. Wherein, preferably, the material is quartz sand.
In a more preferred embodiment, the display 36 is disposed on an end of the support column 33 proximate the sand hopper 31.
In the embodiment of the present utility model, as shown in fig. 2, the display 36 is disposed at the end of the support column 33 near the sand weighing hopper 31, so that an operator can know the feeding amount of the feeding material through the display 36 in real time during the feeding process, and the feeding process can be performed more accurately.
In another more preferred embodiment, the automatic feeding device 3 further comprises a conveyor belt, one end of which is located above the sand hopper 31, and the other end of which extends to the ground.
In the embodiment of the utility model, the conveyer belt is further arranged, so that the workload of operators in feeding can be further reduced, and the feeding can be directly carried out at a low position. Preferably, the conveyor belt may be electrically connected to the controller, so that the weight sensor 34 is linked to the conveyor belt, thereby further improving the feeding efficiency and accuracy. Specifically, an operator can directly place the feeding material on the conveyor belt at the ground level, and the feeding material is conveyed into the sand weighing hopper 31 through the conveyor belt, and meanwhile, the weight sensor 34 weighs the feeding material in real time, and when the feeding material feeding amount reaches a set value, the conveyor belt is controlled by the controller to stop conveying. Wherein, in order to better weigh the addition of throwing the material, the discharge gate of title sand hopper 31 bottom with the feed inlet at test pipeline 2 top is through telescopic stainless steel connecting pipe flexible coupling.
In a preferred mode, the air feeder 1 comprises an air quantity adjusting mechanism, and the air quantity adjusting range of the air quantity adjusting mechanism is 1-30m/s.
In the embodiment of the utility model, the air volume adjusting range of the air volume adjusting mechanism is preferably 5-20m/s, and more preferably 12-16m/s, so that in the practical application process, the air volume adjusting mechanism controls the air blower 1 to blow air to the test pipeline 2 at the air speeds of 12m/s, 13m/s, 14m/s, 15m/s and 16m/s, and the test effect on the abrasion strength of the support net sheet can be effectively improved. Further, the air supply speed of the blower 1 is matched with the feeding speed of the automatic feeding device 3, so that the effect of testing the abrasion strength of the supporting net sheet can be further improved.
According to the SCR denitration catalyst module supporting net piece abrasion strength testing device, in a preferable mode, the inner surface of the testing pipeline 2 is a smooth surface.
In the embodiment of the utility model, the inner surface of the test pipeline 2 is provided with the smooth surface, so that the test effect of the feeding on the abrasion strength of the support net sheet can be further effectively improved, and the phenomenon that the feeding remains in the test pipeline 2 due to too large friction force of the inner surface of the test pipeline 2 is avoided.
In another more preferred embodiment, the contact end of the fixing structure and the supporting net sheet is provided with a buffer pad, and the buffer pad is made of sponge; the fixing structure is a hook.
In the embodiment of the utility model, the fixing structure of the supporting mesh is arranged on the inner surface of the test pipeline 2 around the movable cover plate 4, so that the supporting mesh can be fixed in the process of testing the abrasion strength of the supporting mesh, and the abrasion strength of the supporting mesh can be better tested. Further, the contact end of fixed knot constructs and support net piece is provided with the blotter, can prevent the test in-process, because friction leads to the weight reduction of support net piece to cause test error. Specifically, the cushion pad can be a sponge or other cushion with the same function. Further specifically, the fixing structure is a hook, in order to ensure the fixing effect on the supporting net, the number of the hooks and the specific installation position of the hooks can be adjusted according to actual needs, no limitation is made here, and the fixing structure is not limited to the hooks, and other fixing structures with the same effect can be used.
In the abrasion strength testing device for the SCR denitration catalyst module supporting net piece, in a preferred mode, the abrasion agent collecting device 5 is connected with the dust removing device 6.
In the embodiment of the utility model, the abrasion agent collecting device 5 is connected with the dust removing device 6, so that in the practical application process, the air discharged into the atmosphere can be removed dust while the effective collection of the fed materials is ensured, and the environment is prevented from being polluted. The abradant collecting device 5 may be any of various devices for storing the charge, for example, a storage box or a storage cabinet.
According to the SCR denitration catalyst module supporting net piece abrasion strength testing device, in a preferred mode, the supporting net piece is L-shaped, U-shaped or rectangular.
In the process of testing the abrasion strength of the support mesh, the support mesh is preferably cut into an L shape, or a U shape, or a rectangle, and more preferably the support mesh is cut into a U shape. Wherein, the material of the supporting net sheet can be 304 stainless steel, manganese steel 65 and galvanized iron wire.
The utility model also provides a method for testing the abrasion strength of the support mesh of the SCR denitration catalyst module, which comprises the following steps:
s1, cutting a supporting net sheet into a set shape;
s2, placing the support net piece with the set shape into a baking oven for baking, and after the baking is finished, placing the support net piece in a room temperature environment for natural cooling and weighing;
s3, opening the movable cover plate 4, and closing the movable cover plate 4 after the support net piece with the set shape is suspended and fixed in the test pipeline 2 through the fixing structure;
s4, after quartz sand with the first set quality is added into the automatic feeding device 3, adopting the blower 1 to blow air into the test pipeline 2 at the set air speed, and enabling the automatic feeding device 3 to feed, and starting a wear strength test experiment;
s5, in the testing process, after the first set mass of the material is fed, stopping feeding the material by the automatic feeding device 3, adding the second set mass of the material into the automatic feeding device 3, and then, feeding the material by the automatic feeding device 3 again until the third set mass of the material is fed completely;
s6, after the test is finished, closing the air blower 1, taking out the support net sheet with the set shape, putting the support net sheet into an oven for drying, and then, after the drying is finished, naturally cooling and weighing the support net sheet in a room temperature environment;
s7, calculating the abrasion strength of the support mesh with the set shape according to the abrasion loss of the support mesh with the set shape.
According to the method for testing the abrasion strength of the support mesh of the SCR denitration catalyst module, in a specific embodiment, the support mesh can be cut into various shapes, preferably, the support mesh can be cut into an L shape, a U shape or a rectangle, and most preferably, the support mesh is cut into a U shape, so that the support mesh can be better tested in the test pipeline 2.
According to the method for testing the abrasion strength of the SCR denitration catalyst module supporting mesh, in the specific implementation mode, in the step S2 and the step S6, the processing mode of the supporting mesh with the set shape in the oven is the same, the drying time and the drying temperature in the oven are respectively 30-180 minutes and 80-160 ℃, the drying temperature in the oven is preferably 100-120 ℃, and most preferably, the drying time and the drying temperature in the oven are respectively 120 minutes and 105 ℃, so that the supporting mesh is sufficiently dried, and the weighing accuracy is ensured.
In the specific embodiment, in the step S4, the blower 1 is adopted to blow air into the test pipeline 2 at a set air speed, and the method specifically comprises the following steps: the air blower 1 is used for blowing air into the test pipeline 2 at the air speed of 1-30m/s, preferably the air blower 1 is used for blowing air into the test pipeline 2 at the air speed of 5-20m/s, more preferably the air blower 1 is used for blowing air into the test pipeline 2 at the air speed of 12-16m/s, most preferably the air blower 1 is used for blowing air into the test pipeline 2 at the air speed of 15m/s, so that the air speed is matched with the speed of quartz sand fed by the automatic feeding device 3, and the optimal test effect is achieved.
According to the method for testing the abrasion strength of the SCR denitration catalyst module supporting net piece, in a specific implementation mode, 30-80-mesh quartz sand is selected as the material, preferably 40-70-mesh quartz sand is selected, and most preferably 60-mesh quartz sand is selected, so that the overlong testing time is avoided under the condition of ensuring the testing effect.
In the method for testing the abrasion strength of the SCR denitration catalyst module supporting net piece, in a specific embodiment, the first set mass is 1-15kg, the second set mass is 3-10kg, and the third set mass is 20-30kg; preferably, the first set mass is 3-12kg; most preferably, the first set mass is 6 kg, the second set mass is 5kg, and the third set mass is 26 kg, so that 26 kg of quartz sand is added into the automatic feeding device 3 in a mode of 6, 5 and 5kg, the feeding uniformity of the automatic feeding device 3 is always ensured, and the accuracy of a test result is ensured. Wherein the total time of the abrasion strength test experiment is 80-180 minutes, preferably 120 minutes, so as to ensure the accuracy of the test result. The total time of the abrasion strength test experiment mainly refers to the time from the first time of adding the quartz sand into the test pipeline 2 to the last time of adding the quartz sand and completely using the quartz sand.
The present utility model will be described in detail by way of examples, but the scope of the present utility model is not limited thereto.
As shown in fig. 1-2, the abrasion strength testing device of the SCR denitration catalyst module supporting net piece is adopted, and comprises a blower 1, a testing pipeline 2 and an automatic feeding device 3;
the air supply outlet of forced draught blower 1 with the air intake connection of test pipeline 2, the air outlet of test pipeline 2 is connected with wearing agent collection device 5, the feed inlet at test pipeline 2 top with the discharge gate of automatic feeder 3 is connected, be provided with removable cover 4 on the side of test pipeline 2, test pipeline 2 is located be provided with the fixed knot who supports the net piece on the internal surface around the removable cover 4.
Specifically, the automatic feeding device 3 comprises a sand hopper 31;
the bottom of the sand weighing hopper 31 is provided with a gate valve 32, two sides of the sand weighing hopper 31 are symmetrically provided with support columns 33, one end, away from the sand weighing hopper 31, of each support column 33 is connected with a base 35, a weight sensor 34 is arranged between each support column 33 and each base 35, the weight sensor 34 is electrically connected with a controller, and the controller is electrically connected with a display 36; the discharge port at the bottom of the sand weighing hopper 31 is connected with the feed port at the top of the test pipeline 2.
The display 36 is disposed on an end of the support column 33 adjacent to the sand hopper 31.
The automatic feeding device 3 further comprises a conveying belt, one end of the conveying belt is located above the sand weighing hopper 31, and the other end of the conveying belt extends to the ground.
The blower 1 comprises an air quantity adjusting mechanism; the air quantity adjusting range of the air quantity adjusting mechanism is 1-30m/s.
The inner surface of the test pipeline 2 is a smooth surface.
The contact end of the fixing structure and the supporting net piece is provided with a buffer pad, and the buffer pad is made of sponge; the fixing structure is a hook.
The abradant collecting device 5 is connected with a dust removing device 6.
Example 1
In the practical application process, cutting a support net sheet made of 304 stainless steel into a U shape; placing the U-shaped supporting net sheet into an oven, drying for two hours at 105 ℃, and naturally cooling and weighing in a room temperature environment after drying is completed; opening the movable cover plate 4, suspending and fixing the support net sheet in the test pipeline 2 through a plurality of hooks, and closing the movable cover plate 4; after 6 kg of 60-mesh quartz sand is added into a sand weighing hopper 31 through a conveying belt, blowing air into a test pipeline 2 at a wind speed of 15m/s by adopting a blower 1, and opening a gate valve 32 to a set opening (namely a feeding speed), so as to start a wear strength test experiment; after 6 kg of 60-mesh quartz sand in the sand weighing hopper 31 is completely thrown, the gate valve 32 is closed, 5kg of 60-mesh quartz sand is rapidly added into the sand weighing hopper 31 through a conveyer belt, and then the gate valve 32 is opened to a set opening degree until 26 kg of 60-mesh quartz sand is completely thrown (namely, the 5, 5 and 5kg of quartz sand are added into the sand weighing hopper 31 in five times); after the test is finished, the blower 1 is closed, the U-shaped supporting net sheet is taken out and put into an oven to be dried for two hours at 105 ℃, and then the oven is placed in a room temperature environment to be naturally cooled and weighed after the drying is finished; and calculating the abrasion strength of the U-shaped supporting net sheet according to the abrasion quantity of the U-shaped supporting net sheet.
The results of the test are shown in Table 1 below.
Table 1: test data of abrasion strength of 304 stainless steel U-shaped supporting net
Example 2
In the practical application process, the support net sheet made of manganese steel 65 is cut into a U shape; placing the U-shaped supporting net sheet into an oven, drying for two hours at 105 ℃, and naturally cooling and weighing in a room temperature environment after drying is completed; opening the movable cover plate 4, suspending and fixing the support net sheet in the test pipeline 2 through a plurality of hooks, and closing the movable cover plate 4; after 6 kg of 60-mesh quartz sand is added into a sand weighing hopper 31 through a conveying belt, blowing air into a test pipeline 2 at a wind speed of 15m/s by adopting a blower 1, and opening a gate valve 32 to a set opening (namely a feeding speed), so as to start a wear strength test experiment; after 6 kg of 60-mesh quartz sand in the sand weighing hopper 31 is completely thrown, the gate valve 32 is closed, 5kg of 60-mesh quartz sand is rapidly added into the sand weighing hopper 31 through a conveyer belt, and then the gate valve 32 is opened to a set opening degree until 26 kg of 60-mesh quartz sand is completely thrown (namely, the 5, 5 and 5kg of quartz sand are added into the sand weighing hopper 31 in five times); after the test is finished, the blower 1 is closed, the U-shaped supporting net sheet is taken out and put into an oven to be dried for two hours at 105 ℃, and then the oven is placed in a room temperature environment to be naturally cooled and weighed after the drying is finished; and calculating the abrasion strength of the U-shaped supporting net sheet according to the abrasion quantity of the U-shaped supporting net sheet.
The results of the detected experiments are shown in table 2 below.
Table 2: test data of wear strength of U-shaped supporting net piece made of manganese steel 65
Example 3
In the practical application process, cutting a support net sheet made of galvanized iron wires into a U shape; placing the U-shaped supporting net sheet into an oven, drying for two hours at 105 ℃, and naturally cooling and weighing in a room temperature environment after drying is completed; opening the movable cover plate 4, suspending and fixing the support net sheet in the test pipeline 2 through a plurality of hooks, and closing the movable cover plate 4; after 6 kg of 60-mesh quartz sand is added into a sand weighing hopper 31 through a conveying belt, blowing air into a test pipeline 2 at a wind speed of 15m/s by adopting a blower 1, and opening a gate valve 32 to a set opening (namely a feeding speed), so as to start a wear strength test experiment; after 6 kg of 60-mesh quartz sand in the sand weighing hopper 31 is completely thrown, the gate valve 32 is closed, 5kg of 60-mesh quartz sand is rapidly added into the sand weighing hopper 31 through a conveyer belt, and then the gate valve 32 is opened to a set opening degree until 26 kg of 60-mesh quartz sand is completely thrown (namely, the 5, 5 and 5kg of quartz sand are added into the sand weighing hopper 31 in five times); after the test is finished, the blower 1 is closed, the U-shaped supporting net sheet is taken out and put into an oven to be dried for two hours at 105 ℃, and then the oven is placed in a room temperature environment to be naturally cooled and weighed after the drying is finished; and calculating the abrasion strength of the U-shaped supporting net sheet according to the abrasion quantity of the U-shaped supporting net sheet.
The results of the detected experiments are shown in Table 3 below.
Table 3: test data of abrasion strength of U-shaped supporting net piece made of galvanized iron wire
As can be seen from tables 1 to 3 in the above embodiments 1 to 3, the abrasion strength testing device and method for the support mesh of the SCR denitration catalyst module according to the present utility model can accurately and efficiently test the abrasion strength of the support mesh made of various materials.
In order to maximize the economic benefit of the selected support mesh on a usable basis, the attrition strength of the catalyst itself was further tested as follows.
As shown in fig. 1-2, the SCR denitration catalyst module support mesh abrasion strength test device described in the above embodiments 1-3 of the present utility model was used.
Comparative example 1
In the actual application process, a catalyst sample is put into an oven to be dried for two hours at 105 ℃, and after the drying is finished, the catalyst sample is placed into a room temperature environment to be naturally cooled and weighed; opening the movable cover plate 4, suspending and fixing the catalyst sample in the test pipeline 2 through a plurality of hooks, and closing the movable cover plate 4; after 6 kg of 60-mesh quartz sand is added into a sand weighing hopper 31 through a conveying belt, blowing air into a test pipeline 2 at a wind speed of 15m/s by adopting a blower 1, and opening a gate valve 32 to a set opening (namely a feeding speed), so as to start a wear strength test experiment; after 6 kg of 60-mesh quartz sand in the sand weighing hopper 31 is completely thrown, the gate valve 32 is closed, 5kg of 60-mesh quartz sand is rapidly added into the sand weighing hopper 31 through a conveyer belt, and then the gate valve 32 is opened to a set opening degree until 26 kg of 60-mesh quartz sand is completely thrown (namely, the 5, 5 and 5kg of quartz sand are added into the sand weighing hopper 31 in five times); after the test is finished, the blower 1 is closed, the catalyst sample is taken out and put into an oven, and is dried for two hours at 105 ℃, and then the catalyst sample is naturally cooled and weighed in a room temperature environment after the drying is finished; the attrition strength of the catalyst samples was calculated from the attrition amount of the catalyst samples.
The results of the detected experiments are shown in the following table 4.
Table 4: test data for attrition strength of catalyst samples
As can be seen from the comparison of tables 1-3 and 4, the abrasion strength of the support meshes made of 304 stainless steel, manganese steel 65 and galvanized iron wire is better than that of the catalyst sample, and the support meshes made of the material with the greatest economic benefit can be selected at this time, so that the cost of the whole catalyst module is reduced.
According to the device and the method for testing the abrasion strength of the support net piece of the SCR denitration catalyst module, the support net piece is fixed in the test pipeline, and then the blower and the automatic feeding device are used in a matched mode, so that the abrasion strength of the support net piece of the denitration catalyst module can be tested rapidly and accurately, the support net piece with the highest cost performance can be screened rapidly in the practical application process, industrial application is facilitated, the overall production cost of a denitration catalyst can be reduced, the purchase and replacement cost of the denitration catalyst of a power plant is reduced, and the device and the method are environment-friendly and power-assisted.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. The technical solution of the present utility model can be modified in various ways within the scope of the technical idea of the present utility model, and various possible combinations are not described further in order to avoid unnecessary repetition. These simple variations and combinations should also be considered as being within the scope of the present disclosure.
Claims (10)
1. The device for testing the abrasion strength of the SCR denitration catalyst module supporting net piece is characterized by comprising a blower (1), a testing pipeline (2) and an automatic feeding device (3);
the air supply outlet of forced draught blower (1) with the air intake connection of test pipeline (2), the air outlet of test pipeline (2) is connected with abrasive agent collection device (5), the feed inlet at test pipeline (2) top with the discharge gate of automatic feeder (3) is connected, be provided with movable cover plate (4) on the side of test pipeline (2), test pipeline (2) are located be provided with the fixed knot who supports the net piece on the internal surface around movable cover plate (4).
2. The SCR denitration catalyst module support mesh abrasion strength testing device according to claim 1, wherein the automatic feeding device (3) comprises a sand hopper (31);
the bottom of the sand weighing hopper (31) is provided with a gate valve (32), two sides of the sand weighing hopper (31) are symmetrically provided with support columns (33), one end, away from the sand weighing hopper (31), of each support column (33) is connected with a base (35), a weight sensor (34) is arranged between each support column (33) and each base (35), the weight sensor (34) is electrically connected with a controller, and the controller is electrically connected with a display (36);
and a discharge hole at the bottom of the sand weighing hopper (31) is connected with a feed inlet at the top of the test pipeline (2).
3. The SCR denitration catalyst module support mesh abrasion strength testing device according to claim 2, wherein the display (36) is provided on an end of the support column (33) near the sand weighing hopper (31).
4. The SCR denitration catalyst module supporting mesh abrasion strength testing device according to claim 2, wherein the automatic feeding device (3) further comprises a conveyer belt, one end of the conveyer belt is located above the sand weighing hopper (31), and the other end extends to the ground.
5. The SCR denitration catalyst module supporting mesh abrasion strength testing device according to claim 1, wherein the blower (1) comprises an air quantity adjusting mechanism;
the air quantity adjusting range of the air quantity adjusting mechanism is 1-30m/s.
6. The SCR denitration catalyst module support mesh abrasion strength testing device according to claim 1, wherein the inner surface of the testing pipeline (2) is a smooth surface.
7. The SCR denitration catalyst module supporting mesh wear strength testing device according to claim 1 or 6, wherein a buffer pad is arranged at the contact end of the fixing structure and the supporting mesh, and the buffer pad is made of sponge.
8. The SCR denitration catalyst module supporting mesh wear strength testing device of claim 7, wherein the fixed structure is a hook.
9. The SCR denitration catalyst module support mesh abrasion strength testing device according to claim 1, wherein the abrasion agent collecting device (5) is connected with a dust removing device (6).
10. The SCR denitration catalyst module support mesh abrasion strength testing device of claim 1, wherein the support mesh is L-shaped, U-shaped or rectangular.
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| CN117848946A (en) * | 2024-03-05 | 2024-04-09 | 河北冠淼金属丝网有限公司 | Multifunctional detection equipment for wire mesh |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117848946A (en) * | 2024-03-05 | 2024-04-09 | 河北冠淼金属丝网有限公司 | Multifunctional detection equipment for wire mesh |
| CN117848946B (en) * | 2024-03-05 | 2024-05-28 | 河北冠淼金属丝网有限公司 | Multifunctional detection equipment for wire mesh |
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