CN115327024A - Denitration catalysis filter material capability test device - Google Patents
Denitration catalysis filter material capability test device Download PDFInfo
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- CN115327024A CN115327024A CN202210934830.6A CN202210934830A CN115327024A CN 115327024 A CN115327024 A CN 115327024A CN 202210934830 A CN202210934830 A CN 202210934830A CN 115327024 A CN115327024 A CN 115327024A
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- 238000012360 testing method Methods 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000007789 gas Substances 0.000 claims abstract description 104
- 239000000203 mixture Substances 0.000 claims abstract description 35
- 238000004154 testing of material Methods 0.000 claims abstract description 35
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000003197 catalytic effect Effects 0.000 claims abstract description 28
- 238000009826 distribution Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000003054 catalyst Substances 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 238000007664 blowing Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/10—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using catalysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/005—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Molecular Biology (AREA)
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Abstract
The invention discloses a device for testing the performance of a denitration catalytic filter material, which comprises a reactor shell, a gas distribution assembly, a filter material testing piece, a first detection piece and a second detection piece, wherein the reactor shell is of a cylindrical structure and comprises a second shell section and a first shell section, the first shell section is provided with a first opening and an exhaust port, the second shell section is provided with a second opening, the first opening is opposite to and communicated with the second opening, the gas distribution assembly introduces nitrogen oxide mixed gas and ammonia gas into the second shell section, the filter material testing piece is clamped between the first opening and the second opening, the first detection piece is used for detecting the gas composition of the mixed gas in the second shell section, and the second detection piece is used for detecting the gas composition of the mixed gas in the first shell section. The filter material testing piece of the denitration catalysis filter material performance testing device is convenient to disassemble and assemble, a filter bag is not needed to be used as a filtering unit, the testing cost is saved, the experimental time is shortened, the required amount of experimental gas is small, and the resource consumption is reduced.
Description
Technical Field
The invention relates to the technical field of denitration and dust removal, in particular to a device for testing the performance of a denitration catalytic filter material.
Background
With the stricter discharge detection standards of industrial gases in China, the treatment of nitrified substances and smoke dust in industrial waste gases becomes an indispensable important link in industrial production.
At present, a catalytic filter bag is generally adopted as integrated denitration and dust removal equipment, namely, a catalyst component is attached to the filter bag for dust removal, and the attached catalyst is used for carrying out reduction reaction with a catalytic nitrate-containing component so as to realize denitration, so that the performance of the catalytic filter bag has an important influence on the denitration and dust removal processes.
In the related art, the filter bag is often used as a test unit in testing the performance of the catalytic filter bag, and the denitration and dedusting processes of the industrial waste gas are simulated by matching a gas distribution system, a heating system and the like, however, the test unit needs to consume a large amount of gas and time in a single test process to evaluate the stability of the catalytic filter material, a plurality of filter bags need to be replaced in a plurality of test processes, the cost is high, and the disassembly and assembly processes are complicated.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a denitration catalysis filter material performance testing device, a reactor shell of the denitration catalysis filter material performance testing device is divided into two detachable shell sections, a filter material testing piece is clamped between the two shell sections, the filter material testing piece is convenient to disassemble and assemble, a filter bag is not needed to be used as a filtering unit, the testing cost is saved, the experimental time is shortened, the required amount of experimental gas is small, and the resource consumption is reduced.
The denitration catalysis filter material performance testing device provided by the embodiment of the invention comprises: the reactor comprises a reactor shell, a first shell section and a second shell section, wherein the reactor shell is of a cylindrical structure and comprises a second shell section and a first shell section, one end, facing the second shell section, of the first shell section is provided with a first opening, the other end of the first shell section is provided with an exhaust port, one end, facing the first shell section, of the second shell section is provided with a second opening, and the first opening is opposite to and communicated with the second opening; the gas distribution assembly is communicated with the second shell section so as to introduce nitrogen oxide mixed gas and ammonia gas into the reactor shell, and the nitrogen oxide mixed gas and the ammonia gas can form mixed gas in the reactor shell; the filter material testing piece is arranged at the communication position of the first opening and the second opening and is clamped between the first shell section and the second shell section; first detection piece and second detection piece, first detection piece is located in the second shell section in order to be used for detecting in the second shell section the gaseous composition of mist, the second detection piece is located in order to be used for detecting in the casing in the first shell section the gaseous composition of mist.
According to the denitration catalysis filter material performance testing device provided by the embodiment of the invention, the reactor shell is divided into two detachable shell sections, the filter material testing piece is clamped between the two shell sections, the filter material testing piece is convenient to disassemble and assemble, a filter bag is not required to be used as a filtering unit, the testing cost is saved, the experimental time is shortened, the required amount of experimental gas is small, and the resource consumption is reduced.
In some embodiments, the denitration catalyst filter material performance testing device includes a loop flange, the loop flange is sleeved on the reactor shell and is located at a communication position of the first opening and the second opening, and the loop flange can connect the first shell section and the second shell section.
In some embodiments, the loose flange comprises a first flange and a second flange, the first flange is sleeved on the first shell section, the second flange is sleeved on the second shell section, and the first flange is connected with the second flange.
In some embodiments, the reactor shell is vertically arranged, the first shell section is located above the second shell section, the second shell section has a first air inlet and a second air inlet, the first air inlet is used for introducing the nitrogen oxide mixture, the second air inlet is used for introducing the ammonia gas, and the second air inlet is located above the first air inlet.
In some embodiments, the denitration catalysis filter material performance test device further comprises a base, the base is provided with a matching cavity, and the lower end of the second shell section is matched in the matching cavity and tightly sealed with the inner wall of the matching cavity.
In some embodiments, the bottom of the second shell section has a first gas inlet, the base has a gas flow channel, one end of the gas flow channel is communicated with the input pipeline of the nitrogen oxide mixture, and the other end of the gas flow channel is communicated with the first gas inlet.
In some embodiments, a seal is disposed between the second shell segment and the inner wall of the mating cavity.
In some embodiments, the denitration catalysis filter material performance test device further comprises a heating assembly, the heating assembly is connected with the second shell section, and the heating assembly can heat the nitrogen oxide mixture.
In some embodiments, the denitration catalysis filter material performance testing device further comprises a back-blowing assembly, the back-blowing assembly is connected with the first shell section, and the back-blowing assembly can spray compressed gas to the filter material testing piece.
In some embodiments, the denitration catalytic filter material performance testing device further comprises an air injection pipe, the air injection pipe is arranged in the second shell section and is communicated with an ammonia gas input pipeline, and the air injection pipe is provided with a plurality of injection holes which are arranged at intervals.
In some embodiments, the distribution assembly feeds the nitrogen oxide mixture into the second shell section through a nitrogen oxide mixture input pipeline, a three-way valve is arranged on the input pipeline, two valve ports of the three-way valve are used for communicating the input pipeline, and the other valve port is used as a sampling port.
Drawings
Fig. 1 is a schematic structural diagram of a denitration catalyst filter material performance testing device according to an embodiment of the invention.
Reference numerals are as follows:
the device comprises a reactor shell 1, a first shell section 11, a second shell section 12, a lap joint flange 13, an exhaust port 14, an air injection pipe 15, a temperature pressure gauge 16, an air distribution component 2, a three-way valve 21, a sampling port 22, an air supply bottle 23, an air distribution box 24, a one-way valve 241, a mass flow meter 242, an air mixing tank 25, a filter material testing piece 3, a first detection piece 4, a second detection piece 5, a base 6, an air flow channel 61, a bracket 62, a base body 63, a heating component 7, a back flushing component 8, a water adding component 9, a water storage tank 91 and a water adding pump 92.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the device for testing the performance of a denitration catalytic filter material according to the embodiment of the invention comprises a reactor shell 1, a gas distribution assembly 2, a filter material testing piece 3, a first detecting piece 4 and a second detecting piece 5.
Specifically, as shown in fig. 1, the reactor shell 1 is a cylindrical structure and includes a second shell section 12 and a first shell section 11, one end of the first shell section 11 facing the second shell section 12 has a first opening, the other end of the first shell section 11 has an exhaust port 14, one end of the second shell section 12 facing the first shell section 11 has a second opening, the first opening is opposite to and communicated with the second opening, the gas distribution assembly 2 is communicated with the second shell section 12 to introduce the nitrogen oxide mixed gas and ammonia gas into the reactor shell 1, the nitrogen oxide mixed gas and ammonia gas can form mixed gas in the reactor shell, the filter material testing piece 3 is disposed at the communication position of the first opening and the second opening and is clamped between the first shell section 11 and the second shell section 12, the first detecting piece 4 is disposed in the second shell section 12 for detecting the gas composition of the mixed gas in the second shell section 12, and the second detecting piece 5 is disposed in the reactor shell for detecting the gas composition of the mixed gas in the first shell section 11.
It should be noted that the denitration catalytic filter material performance testing device of the application is designed with the principle of denitration reaction as a basic point, that is, the introduced nitrogen oxide mixed gas is the gas which needs to be purified, part of the gas needs denitration, the introduced ammonia gas is used as a reducing agent to participate in the denitration reaction, and the nitrogen oxide mixed gas and the ammonia gas are converted into harmless nitrogen gas and water through the catalytic action of the filter material testing piece 3 and are discharged into the air.
Specifically, as shown in fig. 1, the reactor shell 1 has an upper shell and a lower shell (in the up-down direction as shown in fig. 1), a lower opening of the first shell 11 is opposite to and communicated with an upper opening of the second shell 12, the test filter element is clamped at the communication position of the first shell 11 and the second shell 12, that is, the filter material testing part 3 is laid on the cross section of the mixed gas flow channel in the reactor shell 1, the inner cavity of the first shell section 11 is the flow channel for the mixed gas at the upper end of the filter material testing part 3 to flow, the inner cavity of the second shell section 12 is the flow channel for the mixed gas at the lower end of the filter material testing part 3 to flow, and the mixed gas flows from the second shell section 12 to the first shell section 11 through the filter material testing part 3.
In other words, the reactor shell 1 provides a space for denitration reaction, and the reactor shell 1 is connected by an upper section and a lower section, so that the filter material testing piece 3 can be conveniently replaced at the connecting port, and the test steps of multiple tests are simplified.
It can be understood that, because the filter material testing piece 3 can be clamped tightly by the cooperation of the first shell section 11 and the second shell section 12, the filter material testing piece 3 is no longer limited to be a filter bag under the condition of meeting the assembly, and optionally, the filter material testing piece 3 is filter cloth for carrying a catalyst, so that the denitration catalytic performance of the catalytic filter material can be tested, the experiment cost is reduced, and meanwhile, the dust removal performance and the catalyst carrying stability of the filter cloth can also be tested.
For convenience of understanding, the use method of the denitration catalytic filter material performance testing apparatus of the present application is described by combining with the catalytic filter material testing process, first, the filter material testing device 3 is clamped between the first shell section 11 and the second shell section 12 of the reactor shell 1, then, the nitrogen oxide mixed gas and ammonia gas for performing the denitration reaction are introduced into the second shell section 12 through the gas distribution assembly 2, the mixed gas flows upward through the filter material testing device 3, the gas composition of the mixed gas is tested by the first detecting device 4 before flowing through the filter material testing device 3 is reserved as a record, then, the mixed gas performs the catalytic reduction reaction under the action of the filter material testing device 3 and flows into the first shell section 11, the gas composition of the mixed gas tested by the second detecting device 5 is reserved as a record, and then, the mixed gas is discharged from the exhaust port 14 of the first shell section 11, so that the catalytic performance of the filter material testing device 3 can be specifically analyzed by comparing the test records of the first detecting device 4 and the second detecting device 5.
It can be understood that the gas distribution assembly 2 can precisely regulate and control the gas composition of the nitrogen oxide mixed gas, so that the specific situation of the catalytic performance of the filter material test piece 3 under any composition can be tested.
Optionally, a temperature gauge may be installed on the reactor shell 1 to monitor the pressure and temperature change conditions in the reactor shell 1, and the related test is stopped in time after the abnormality is found, so as to improve the safety of the testing device.
According to the device for testing the performance of the denitration catalytic filter material, provided by the embodiment of the invention, the reactor shell is divided into two detachable shell sections, the filter material testing piece is clamped between the two shell sections, the filter material testing piece is convenient to disassemble and assemble, a filter bag is not required to be used as a filter unit, the test cost is saved, the experiment time is shortened, the demand of experiment gas is small, and the resource consumption is reduced.
Further, as shown in fig. 1, the device for testing the performance of the denitration catalytic filter material further comprises a loop flange 13, the loop flange 13 is sleeved on the reactor shell 1 and is located at a communication position of the first opening and the second opening, and the loop flange 13 can be connected with the first shell section 11 and the second shell section 12.
It can be understood that the loose flange 13 is easy to disassemble, and is convenient for replacing the filter material testing piece 3 at the communication position of the first opening and the second opening.
It should be noted that, while the loose flange 13 connects the first shell segment 11 and the second shell segment 12, the sealing performance of the reactor shell 1 is also enhanced, and the harmful gas is prevented from overflowing during the reaction process.
Optionally, as shown in fig. 1, the loose flange 13 includes a first flange and a second flange, the first flange is sleeved on the first shell section 11, the second flange is sleeved on the second shell section 12, and the first flange is connected with the second flange.
It can be understood that the flange connection manner of the first shell segment 11 and the second shell segment 12 is various, and the first flange and the second flange can be connected through a bolt, or can be connected to the outer wall of the connection port of the first shell segment 11 and the second shell segment 12 through a snap-in flange ring, and specifically, the flange connection manner should be reasonably selected according to the convenience of disassembly and the sealing performance of connection.
Further, as shown in fig. 1, the reactor shell 1 is vertically disposed, the first shell section 11 is located above the second shell section 12, the second shell section 12 has a first air inlet and a second air inlet, the first air inlet is used for introducing nitrogen oxide mixture, the second air inlet is used for introducing ammonia, and the second air inlet is located above the first air inlet.
It can be understood that reactor housing 1 vertical layout has simulated the actual denitration gas discharge operating mode, and has accorded with the ascending characteristic of air current, and the filter material test piece 3 of being convenient for the air current of flowing through from bottom to top, and the air inlet of nitrogen oxide gas mixture is located the lower extreme of ammonia inlet and is favorable to gas mixture and ammonia intensive mixing, improves reaction efficiency. In addition, the reactor shell 1 arranged vertically occupies small ground surface space, and has small requirements on application places.
Preferably, the reactor shell is made of stainless steel, so that appearance manufacturing is facilitated according to specific experimental design requirements, and the stainless steel is high-temperature resistant and corrosion resistant, so that the service life of the reactor shell is prolonged.
Further, as shown in fig. 1, the denitration catalyst filter material performance testing device further comprises a base 6, the base 6 is provided with a matching cavity, and the lower end of the second shell section 12 is matched in the matching cavity and tightly attached and sealed with the inner wall of the matching cavity.
In other words, base 6 has the installation and places the cooperation chamber of second shell section 12 lower extreme, and the inner wall in cooperation chamber and the periphery of second shell section 12 lower extreme closely laminate, and base 6 and testing arrangement zonulae occludens from this, and base 6 provides the support for testing arrangement's even running, ensures that testing arrangement can not topple over in the reaction process.
Further, as shown in fig. 1, the bottom of the second shell section 12 has a first air inlet, the base 6 has an air flow channel 61, one end of the air flow channel 61 is communicated with an input pipeline of the nitrogen oxide mixture, and the other end of the air flow channel 61 is communicated with the first air inlet, that is, the nitrogen oxide mixture flows into the first air inlet through the air flow channel 61 of the base 6, so that the nitrogen oxide mixture can be introduced into the second shell section 12 from the lowest end of the second shell section 12, the effective reaction space in the second shell section 12 is increased, the compactness of the assembly of the testing device is increased, and the structural composition of the testing device is further simplified. Further, as shown in fig. 1, a sealing member is disposed between the second casing section 12 and the inner wall of the mating cavity, so that the sealing member can prevent the nitrogen oxide mixture flowing into the second casing section 12 through the base 6 from overflowing, and the safety of the device is improved.
Alternatively, as shown in fig. 1, the base 6 includes a seat body 63 and a bracket 62, the bracket 62 is connected to the upper end of the seat body 63, the bracket 62 has a fitting cavity, and the bracket 62 has an air flow passage 61 therein.
Further, as shown in fig. 1, the denitration catalytic filter material performance testing device further comprises a heating assembly 7, the heating assembly 7 is connected with the second shell section 12, and the heating assembly 7 can heat the nitrogen oxide mixed gas so as to simulate hot flue gas under a real condition.
Further, as shown in fig. 1, the denitration catalytic filter material performance testing device further comprises a back-blowing component 8, the back-blowing component 8 is connected with the first shell section 11, and the back-blowing component 8 can spray compressed gas to the filter material testing piece 3, so that the durability of the catalytic filter material in the actual use process can be deduced by observing the residual condition of the catalyst on the filter material testing piece 3 under the impact of the compressed gas, and the replacement period is determined.
It can be understood that the back-blowing component 8 can control the pressure of the injected gas and record the injection time, so that the experimenter can conveniently test the catalyst mounting stability and carry out data statistics.
It should be noted that the back-blowing assembly 8 is installed at the exhaust port 14 of the first shell section 11, and when the blowing operation is required, the back-blowing assembly 8 injects the compressed gas from the exhaust port 14 to the first shell section 11, and at this time, the gas distribution assembly is disconnected from the reactor shell 1.
Further, as shown in fig. 1, the device for testing the performance of the denitration catalytic filter material further comprises an air injection pipe 15, the air injection pipe 15 is arranged in the second shell section 12 and is communicated with an input pipeline of ammonia gas, the air injection pipe 15 is provided with a plurality of spray holes which are arranged at intervals, namely, the air injection pipe 15 is connected with the input pipeline of ammonia gas and extends into the second shell section 12 from a second air inlet.
It can be understood that the ammonia gas can be injected in the second shell section 12 through the injection holes of the gas injection pipe 15, so that the ammonia gas can be fully mixed with the nitrogen oxide mixed gas delivered by the first gas inlet, and the denitration reaction efficiency can be improved.
Optionally, the number of the gas nozzles 15 and the arrangement mode of the nozzle holes can be reasonably selected according to the volume of the reactor shell 1, so that the supply amount of ammonia gas in the denitration reaction process is fully satisfied.
Preferably, the gas ejector 15 is made of a stainless steel pipe, so that materials can be conveniently obtained, the corrosion resistance is high, and the durability of test parts is improved.
Further, as shown in fig. 1, the air distribution assembly 2 introduces the nitrogen oxide mixture into the second shell section 12 through an input pipeline of the nitrogen oxide mixture, the input pipeline is provided with a three-way valve 21, two valve ports of the three-way valve 21 are used for communicating the input pipeline, and the other valve port is used as a sampling port 22.
In other words, one valve of the three-way valve 21 is connected to the nitrogen oxide mixture delivered by the gas distribution assembly 2, the other valve is connected to the first gas inlet through the delivery pipe, and the last valve is used for sampling the nitrogen oxide mixture for detailed test analysis, so that the flow direction of the nitrogen oxide mixture can be specifically controlled according to the valve.
It will be appreciated that the exhaust port 14 of the first housing section 11 may also serve as a sampling port, so that the gas sampled by the two sampling ports can be analyzed in detail to further understand the specific catalytic performance of the filter material testing member 3.
Further, the gas distribution assembly 2 comprises a gas supply bottle 23, a gas distribution box 24, a gas mixing tank 25 and input pipelines for connecting the parts, wherein the gas supply bottle 23 is used for storing and providing gas required by denitration reaction and comprises an ammonia gas bottle, a nitrogen gas bottle, an oxygen gas bottle, a nitrogen oxide gas bottle and the like, the ammonia gas bottle directly enters the reactor shell 1 through an input pipeline through a second gas inlet, other gases enter the gas mixing tank 25 through the input pipeline and are primarily mixed to form nitrogen oxide mixed gas, and then the nitrogen oxide mixed gas is introduced into the reactor shell 1 through a first gas inlet.
It should be noted that the gas distribution box 24 is provided with a check valve 241 and a mass flow meter 242, the check valve 241 can ensure that the gas flowing out does not flow back, and the mass flow meter 242 can accurately display the flow rate of the gas, so as to control the flow rate of each gas, so as to realize accurate allocation of the gas components flowing into the reactor shell 1.
Further, as shown in fig. 1, the denitration catalytic filter material performance testing device further comprises a water adding assembly 9, the water adding assembly comprises a water storage tank 91 and a water adding pump 92, the water adding pump 91 adds water into the reactor shell 1 through a conveying pipe, and therefore the water is mixed with ammonia gas through high-temperature gasification and is used for testing the denitration performance under the actual water containing condition.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either mechanically or electrically or in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in an interactive relationship between two elements unless expressly defined otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "below," and "beneath" a second feature may be directly or obliquely under the first feature or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (11)
1. The utility model provides a denitration catalysis filter material capability test device which characterized in that includes:
the reactor shell is of a cylindrical structure and comprises a second shell section and a first shell section, wherein a first opening is formed in one end, facing the second shell section, of the first shell section, an exhaust port is formed in the other end of the first shell section, a second opening is formed in one end, facing the first shell section, of the second shell section, and the first opening is opposite to and communicated with the second opening;
the gas distribution assembly is communicated with the second shell section so as to introduce nitrogen oxide mixed gas and ammonia gas into the reactor shell, and the nitrogen oxide mixed gas and the ammonia gas can form mixed gas in the reactor shell;
the filter material testing piece is arranged at the communication position of the first opening and the second opening and is clamped between the first shell section and the second shell section;
the gas composition detection device comprises a first detection piece and a second detection piece, wherein the first detection piece is arranged in the second shell section and used for detecting the gas composition of the mixed gas in the second shell section, and the second detection piece is arranged in the shell and used for detecting the gas composition of the mixed gas in the first shell section.
2. The denitration catalyst filter material performance testing device of claim 1, further comprising a loop flange, wherein the loop flange is sleeved on the reactor shell and is located at a communication position of the first opening and the second opening, and the loop flange can connect the first shell section and the second shell section.
3. The denitration catalyst filter material performance testing device of claim 2, wherein the lap joint flange comprises a first flange and a second flange, the first flange is sleeved on the first shell section, the second flange is sleeved on the second shell section, and the first flange is connected with the second flange.
4. The denitration catalyst filter material performance testing device according to claim 1, wherein the reactor housing is vertically arranged, the first shell section is located above the second shell section, the second shell section is provided with a first air inlet and a second air inlet, the first air inlet is used for introducing the nitrogen oxide mixture, the second air inlet is used for introducing the ammonia gas, and the second air inlet is located above the first air inlet.
5. The device for testing the performance of the denitration catalytic filter material of claim 4, further comprising a base, wherein the base is provided with a matching cavity, and the lower end of the second shell section is matched in the matching cavity and tightly attached and sealed with the inner wall of the matching cavity.
6. The denitration catalyst filter material performance testing device of claim 5, wherein the bottom of the second shell section is provided with a first air inlet, the base is provided with an air flow channel, one end of the air flow channel is communicated with an input pipeline of nitrogen oxide mixed gas, and the other end of the air flow channel is communicated with the first air inlet.
7. The denitration catalyst filter material performance testing device of claim 6, wherein a sealing member is arranged between the second shell section and the inner wall of the matching cavity.
8. The denitration catalyst filter material performance testing device of claim 1, further comprising a heating assembly, wherein the heating assembly is connected with the second shell section, and the heating assembly can heat the nitrogen oxide mixture.
9. The denitration catalytic filter material performance testing device of claim 1, further comprising a back-blowing assembly, wherein the back-blowing assembly is connected with the first shell section, and the back-blowing assembly can spray compressed gas to the filter material testing piece.
10. The device for testing the performance of the denitration catalytic filter material according to claim 1, further comprising an air injection pipe, wherein the air injection pipe is arranged in the second shell section and is communicated with an ammonia gas input pipeline, and the air injection pipe is provided with a plurality of spray holes which are arranged at intervals.
11. The denitration catalyst filter material performance testing device of claim 1, wherein the air distribution assembly introduces the nitrogen oxide mixture gas into the second shell section through an input pipeline of the nitrogen oxide mixture gas, a three-way valve is arranged on the input pipeline, two valve ports of the three-way valve are used for communicating the input pipeline, and the other valve port is used as a sampling port.
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| CN202210934830.6A CN115327024A (en) | 2022-08-04 | 2022-08-04 | Denitration catalysis filter material capability test device |
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| CN202210934830.6A CN115327024A (en) | 2022-08-04 | 2022-08-04 | Denitration catalysis filter material capability test device |
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| CN218298155U (en) * | 2022-08-04 | 2023-01-13 | 中国恩菲工程技术有限公司 | Denitration catalysis filter material capability test device |
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| CN2425281Y (en) * | 2000-04-30 | 2001-03-28 | 肖敏文 | Gas-purifying absorber |
| CN109884242A (en) * | 2019-03-21 | 2019-06-14 | 青岛大学 | A kind of test device and evaluation method based on catalyst load filtrate denitration effect |
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