CN114113452A - Evaluation device and evaluation method for denitration and denitration of catalyst, VOCs and dioxin - Google Patents
Evaluation device and evaluation method for denitration and denitration of catalyst, VOCs and dioxin Download PDFInfo
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 66
- 239000003054 catalyst Substances 0.000 title claims abstract description 48
- 238000011156 evaluation Methods 0.000 title claims abstract description 12
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title 1
- 239000007789 gas Substances 0.000 claims abstract description 178
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 117
- 238000001514 detection method Methods 0.000 claims abstract description 65
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 claims abstract description 51
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 51
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 33
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003546 flue gas Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 18
- 150000002013 dioxins Chemical class 0.000 claims abstract description 8
- 230000002195 synergetic effect Effects 0.000 claims abstract description 7
- 230000003197 catalytic effect Effects 0.000 claims description 23
- 239000010453 quartz Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 9
- 238000004088 simulation Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003795 desorption Methods 0.000 claims 3
- 239000003595 mist Substances 0.000 claims 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000003278 mimic effect Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000003421 catalytic decomposition reaction Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- MVPPADPHJFYWMZ-IDEBNGHGSA-N chlorobenzene Chemical group Cl[13C]1=[13CH][13CH]=[13CH][13CH]=[13CH]1 MVPPADPHJFYWMZ-IDEBNGHGSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 239000002912 waste gas Substances 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
Abstract
The invention discloses a device and a method for evaluating the performance of denitration, VOCs and dioxin removal of a catalyst, and relates to the field of gas catalytic reaction devices, wherein the device comprises a flue gas distribution system, a cooperative removal reaction system and a detection system; the flue gas distribution system can be used for preparing mixed gas containing nitric oxide, VOCs (volatile organic compounds) simulants and dioxin simulants, wherein the nitric oxide is NO, the VOCs simulants are methylbenzene, and the dioxin simulants are chlorobenzene; the synergistic removal reaction system can carry out catalytic reaction on the mixed gas prepared by the flue gas distribution system and a catalyst to be detected; the detection system can be used for respectively detecting the concentration of nitrogen oxides, the concentration of VOCs (volatile organic compounds) mimics and the concentration of dioxin mimics in the mixed gas before catalytic reaction and the mixed gas after catalytic reaction. The invention has the advantages that: the performance evaluation efficiency of the catalyst is greatly improved.
Description
Technical Field
The invention relates to the field of gas catalytic reaction devices, in particular to a device and a method for evaluating the performance of denitration and removal of VOCs and dioxin of a catalyst.
Background
At present, the mainstream industrial flue gas denitration technology is a Selective Catalytic Reduction (SCR) denitration technology, the technical core is a denitration catalyst, the denitration efficiency can usually reach more than 98%, and the denitration catalyst is widely applied to the industries of thermal power, steel, cement, glass and the like and can basically meet the emission requirement of nitric oxides in flue gas.
With the rapid development of human economic activities and production, a large amount of energy is consumed, and meanwhile, a large amount of waste gas and smoke substances are discharged into the atmosphere, so that the quality of the atmospheric environment is seriously influenced, and particularly in densely populated cities and industrial areas, industrial discharge is an important source of atmospheric pollution. The pollutants discharged into the atmosphere by industry are various, and the smoke components are different according to the difference of fuels or incinerated substances, and the common pollutants are sulfur dioxide, particulate matters, nitrogen oxides, dioxins and VOCs (volatile organic compounds). The sulfur dioxide and the particulate matters can be effectively removed through desulfurization and dust removal, the desulfurization process comprises a dry method process, a wet method process and a semi-dry method process, and the dust removal process comprises electric dust removal, cloth bag dust removal and other processes, so that good effects can be achieved. The nitrogen oxides are generally removed by methods such as SNCR, SCR and the like, and the core technology of SCR is a denitration catalyst; dioxin is generally removed by technologies such as activated carbon adsorption and catalytic decomposition, but the problem of dioxin pollution cannot be thoroughly solved by activated carbon adsorption, the adsorbed activated carbon still needs to be buried, and the catalytic decomposition technology is a cleaner and efficient removal technology; VOCs can be removed by adsorption, membrane separation, plasma discharge, and catalysis.
The research on the pollutants of nitrogen oxides, dioxins and VOCs which can be catalytically decomposed by the catalyst uses a synergistic catalyst for simultaneous catalytic removal, and the method has great practical value. In the research process, the performance of the catalyst needs to be evaluated, and an accurate and convenient evaluation device is needed. Patent document No. CN211955339U discloses a catalyst performance evaluation device, which includes a flue gas distribution system, a synergistic removal reaction system and a detection system, and can perform synergistic removal performance evaluation of nitrogen oxides and dioxins on a catalyst; the device needs to calibrate the concentration of nitrogen oxides and chlorobenzene in the gas distribution before denitration and dioxin removal under the condition that a hollow tube of a catalyst is not placed in a collaborative removal reaction system, so that the catalytic performance of the catalyst can be converted according to the detection result of a detection system after reaction, the efficiency of evaluating the performance of the catalyst is low, chlorobenzene is introduced in a steam form, the influence of factors such as temperature is large, and the concentration of the chlorobenzene is difficult to control.
Disclosure of Invention
The invention aims to provide a device and a method for evaluating the performance of denitration and removal of VOCs and dioxin of a catalyst, which can improve the efficiency of evaluating the performance of the catalyst.
The invention solves the technical problems through the following technical means: the device for evaluating the performance of removing the dioxin from the VOCs by the denitration catalyst comprises a flue gas distribution system, a cooperative removal reaction system and a detection system, wherein the flue gas distribution system can prepare mixed gas containing nitric oxide and a mimic of the VOCs and the mimic of the dioxin, the cooperative removal reaction system can perform catalytic reaction on the mixed gas prepared by the flue gas distribution system and a catalyst to be detected, and the detection system can respectively detect the concentration of the nitric oxide, the concentration of the VOCs mimic and the concentration of the dioxin mimic in the mixed gas before the catalytic reaction and the mixed gas after the catalytic reaction. Through detecting nitrogen oxide concentration, VOCs simulant concentration and dioxin simulant concentration in the mixed gas before catalytic reaction and the mixed gas after catalytic reaction respectively, can directly calculate catalytic efficiency, need not to mark the concentration of nitrogen oxide, VOCs's simulant and dioxin simulant in the distribution under the blank pipe state, improved the performance evaluation efficiency of catalyst greatly.
As an optimized technical scheme, the nitrogen oxide is NO, the VOCs simulant is toluene, and the dioxin simulant is chlorobenzene.
As an optimized technical scheme, the flue gas distribution system comprises a nitrogen oxide gas source (1), a VOCs simulated gas source (2), a dioxin simulated gas source (3), a flue gas component gas source (4), a gas inlet pipeline (5), a gas mixing tank (6) and a flow regulating device (7); the nitrogen oxide gas source (1), the VOCs simulated gas source (2), the dioxin simulated gas source (3) and the flue gas component gas source (4) are respectively communicated with the gas mixing tank (6) through the gas inlet pipelines (5), and the gas inlet pipelines (5) are connected in parallel; each air inlet pipeline (5) is provided with a flow regulating device (7); the synergistic removal reaction system comprises a connecting pipeline (9), a catalytic reactor (10) and an air outlet pipeline (11); one end of the connecting pipeline (9) is communicated with the gas mixing tank (6), and the other end of the connecting pipeline is connected with a gas inlet of the catalytic reactor (10); one end of the gas outlet pipeline (11) is connected with a gas outlet of the catalytic reactor (10); the detection system comprises a first gas detection device (14), a second gas detection device (15); the gas detection device is characterized in that a first gas detection device (14) is installed on the connecting pipeline (9), and a second gas detection device (15) is installed on the gas outlet pipeline (11). Simple and reliable structure and easy operation.
As an optimized technical scheme, the nitrogen oxide gas source (1) adopts NO/Ar mixed gas; the VOCs simulation gas source (2) adopts toluene/Ar mixed gas; the dioxin simulated gas source (3) adopts chlorobenzene/Ar mixed gas; the number of the smoke component gas sources (4) is three, and O is respectively adopted2Mixed gas of/Ar and NH3Mixed gas of/Ar and pure Ar gas; the nitrogen oxide gas source (1), the VOCs simulation gas source (2), the dioxin simulation gas source (3) and each flue gas component gas source (4) all adopt steel cylinder standard concentration gas. The gas with standard concentration is used for gas distribution, so that the concentration of nitrogen oxides, the concentration of chlorobenzene and the concentration of toluene in the simulated mixed gas can be accurately regulated and controlled.
As an optimized technical scheme, the first gas detection device (14) and the second gas detection device (15) respectively comprise an NO concentration sensor, a toluene concentration sensor and a chlorobenzene concentration sensor. The concentration of NO, the concentration of chlorobenzene and the concentration of toluene in the mixed gas before and after the catalytic reaction are directly measured by the sensor, the reaction is rapid, and the detection is sensitive.
As an optimized technical scheme, the flue gas distribution system further comprises a first flow detection device (8), and the first flow detection devices (8) are respectively installed on the air inlet pipelines (5). The first flow rate detection device can detect the actual flow rate in each intake duct, and ensure that the actual flow rate matches the set flow rate.
As an optimized technical scheme, the cooperative removal reaction system further comprises a second flow detection device (12) and a third flow detection device (13), the second flow detection device (12) is installed on the connecting pipeline (9), and the third flow detection device (13) is installed on the gas outlet pipeline (11). The second flow detection device and the third flow detection device are compared with the first flow detection device in readings, whether the air tightness of the device is good or not can be judged, and the reliability of the device is improved.
As an optimized technical scheme, the catalytic reactor (10) adopts a fixed bed reactor and comprises a quartz reaction tube and an electric heating furnace, the quartz reaction tube can be used for placing a catalyst to be detected, the quartz reaction tube is arranged in the electric heating furnace, and the electric heating furnace can be used for heating the quartz reaction tube at a constant temperature.
The method for evaluating the performance of removing VOCs and dioxin by the catalyst comprises the following steps:
placing a catalyst to be detected in the cooperative removal reaction system;
preparing mixed gas containing nitrogen oxides, VOCs (volatile organic compounds) simulants and dioxin simulants;
and step three, enabling the mixed gas prepared in the step two to enter the collaborative removal reaction system to perform catalytic reaction with a catalyst to be detected, respectively detecting the concentration of nitrogen oxides, the concentration of VOCs (volatile organic chemicals) mimics and the concentration of dioxin mimics in the mixed gas before catalytic reaction and the mixed gas after catalytic reaction by the detection system, and calculating the catalytic efficiency.
The invention has the advantages that:
1. the concentration of nitrogen oxides, the concentration of VOCs (volatile organic compounds) mimics and the concentration of dioxin mimics in the mixed gas before and after catalytic reaction are detected respectively, so that the catalytic efficiency can be directly calculated, and the performance evaluation efficiency of the catalyst is greatly improved.
2. The gas with standard concentration is used for gas distribution, so that the concentration of nitrogen oxides, the concentration of chlorobenzene and the concentration of toluene in the simulated mixed gas can be accurately regulated and controlled.
3. The concentration of NO, the concentration of chlorobenzene and the concentration of toluene in the mixed gas before and after the catalytic reaction are directly measured by the sensor, the reaction is rapid, and the detection is sensitive.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for evaluating the performance of a catalyst for denitration and denitration of VOCs and dioxin.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The device for evaluating the performance of denitration, VOCs and dioxin removal of the catalyst comprises a flue gas distribution system, a cooperative removal reaction system and a detection system; the flue gas distribution system can be used for preparing mixed gas containing nitric oxide, VOCs (volatile organic compounds) simulants and dioxin simulants, wherein the nitric oxide is NO, the VOCs simulants are methylbenzene, and the dioxin simulants are chlorobenzene; the synergistic removal reaction system can carry out catalytic reaction on the mixed gas prepared by the flue gas distribution system and a catalyst to be detected; the detection system can be used for respectively detecting the concentration of nitrogen oxides, the concentration of VOCs (volatile organic compounds) mimics and the concentration of dioxin mimics in the mixed gas before catalytic reaction and the mixed gas after catalytic reaction.
As shown in fig. 1, the flue gas distribution system includes a nitrogen oxide gas source 1, a VOCs simulated gas source 2, a dioxin simulated gas source 3, a flue gas component gas source 4, a gas inlet pipe 5, a gas mixing tank 6, a flow regulating device 7, and a first flow detecting device 8; the nitrogen oxide gas source 1 adopts NO/Ar mixed gas; the VOCs simulation gas source 2 adopts toluene/Ar mixed gas; a dioxin simulated gas source 3 adopts chlorobenzene/Ar mixed gas; three gas sources 4 of smoke components are provided and respectively adopt O2Mixed gas of/Ar and NH3Mixed gas of/Ar and pure Ar gas; the nitrogen oxide gas source 1, the VOCs simulation gas source 2, the dioxin simulation gas source 3 and the gas sources 4 of all the smoke components are all marked by steel cylindersQuasi-concentration gas; the nitrogen oxide gas source 1, the VOCs simulated gas source 2, the dioxin simulated gas source 3 and each flue gas component gas source 4 are respectively communicated with a gas mixing tank 6 through gas inlet pipelines 5, the gas inlet pipelines 5 are made of steel pipes and are provided with valves, and the gas inlet pipelines 5 are connected in parallel; each air inlet pipeline 5 is respectively provided with a flow regulating device 7 and a first flow detecting device 8, the flow regulating device 7 adopts a mass flowmeter, and the first flow detecting device 8 adopts a rotor flowmeter; the gas in each source enters the gas mixing tank 6 through the inlet pipe 5 as shown by the arrow direction.
The cooperative removal reaction system comprises a connecting pipeline 9, a catalytic reactor 10, an air outlet pipeline 11, a second flow detection device 12 and a third flow detection device 13; one end of a connecting pipeline 9 is communicated with the gas mixing tank 6, the other end of the connecting pipeline is connected with a gas inlet of the catalytic reactor 10, and the connecting pipeline 9 is made of a steel pipe and is provided with a valve; the catalytic reactor 10 adopts a fixed bed reactor and comprises a quartz reaction tube and an electric heating furnace, wherein the quartz reaction tube can be used for placing a catalyst to be detected, the quartz reaction tube is arranged in the electric heating furnace, and the electric heating furnace can heat the quartz reaction tube at a constant temperature; one end of the gas outlet pipeline 11 is connected with a gas outlet of the catalytic reactor 10, and the gas outlet pipeline 11 is made of steel pipes and is provided with a valve; a second flow detection device 12 is arranged on the connecting pipeline 9, a third flow detection device 13 is arranged on the air outlet pipeline 11, and the second flow detection device 12 and the third flow detection device 13 both adopt rotor flowmeters; as shown by the arrow direction, the mixed gas in the gas mixing tank 6 enters the catalytic reactor 10 through the connecting pipeline 9, and is discharged to the gas outlet pipeline 11 after the catalytic reaction in the catalytic reactor 10.
The detection system comprises a first gas detection device 14, a second gas detection device 15; install first gas detection device 14 on connecting tube 9, install second gas detection device 15 on the pipeline of giving vent to anger 11, first gas detection device 14, second gas detection device 15 all includes NO concentration sensor, toluene concentration sensor and chlorobenzene concentration sensor, nitrogen oxide (being NO) concentration in the mixed gas before catalytic reaction, VOCs simulant (being toluene) concentration and dioxin simulant (being chlorobenzene) concentration in first gas detection device 14 can detect, nitrogen oxide (being NO) concentration in the mixed gas after the catalytic reaction, VOCs simulant (being toluene) concentration and dioxin simulant (being chlorobenzene) concentration after the second gas detection device 15 can detect.
The method for evaluating the performance of removing VOCs and dioxin by the catalyst comprises the following steps:
placing a catalyst to be detected in a quartz tube of a catalytic reactor 10, and starting a heating furnace to reach an evaluation temperature;
step two, preparing mixed gas containing nitrogen oxides, VOCs (volatile organic compounds) simulants and dioxin simulants, starting a required gas source, setting flow through a flow regulating device 7, and simultaneously reading actual flow in each gas inlet pipeline 5 from each first flow detecting device 8 to ensure that the actual flow is consistent with the set flow; the readings of the second flow detection device 12 and the third flow detection device 13 are compared with the readings of the first flow detection device 8, so that whether the air tightness of the device is intact can be judged, and the reliability of the device is improved;
and step three, allowing the mixed gas prepared in the step two to enter a quartz tube of the catalytic reactor 10 to perform catalytic reaction with a catalyst to be detected, detecting the concentration of NO, chlorobenzene and toluene in the mixed gas before the catalytic reaction by using the first gas detection device 14 when the mixed gas passes through the connecting pipeline 9, detecting the concentration of NO, chlorobenzene and toluene in the mixed gas after the catalytic reaction by using the second gas detection device 15 when the mixed gas after the catalytic reaction passes through the gas outlet pipeline 11, and calculating the catalytic efficiency.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a catalyst denitration takes off VOCs takes off dioxin performance evaluation device which characterized in that: including flue gas distribution system, desorption reaction system and detecting system in coordination, flue gas distribution system can prepare the mist that contains nitrogen oxide, VOCs's simulant, dioxin simulant, desorption reaction system in coordination can with the mist that flue gas distribution system prepared carries out catalytic reaction with the catalyst that awaits measuring, detecting system can detect nitrogen oxide concentration, VOCs simulant concentration and the dioxin simulant concentration in the mist before the catalytic reaction and after the catalytic reaction respectively.
2. The device for evaluating the performance of the catalyst for denitration and denitration of VOCs and dioxin according to claim 1, characterized in that: the nitrogen oxide is NO, the VOCs simulants are toluene, and the dioxin simulants are chlorobenzene.
3. The device for evaluating the performance of the catalyst for denitration and denitration of VOCs and dioxin according to claim 1, characterized in that: the flue gas distribution system comprises a nitrogen oxide gas source (1), a VOCs simulated gas source (2), a dioxin simulated gas source (3), a flue gas component gas source (4), a gas inlet pipeline (5), a gas mixing tank (6) and a flow regulating device (7); the nitrogen oxide gas source (1), the VOCs simulated gas source (2), the dioxin simulated gas source (3) and the flue gas component gas source (4) are respectively communicated with the gas mixing tank (6) through the gas inlet pipelines (5), and the gas inlet pipelines (5) are connected in parallel; each air inlet pipeline (5) is provided with a flow regulating device (7); the synergistic removal reaction system comprises a connecting pipeline (9), a catalytic reactor (10) and an air outlet pipeline (11); one end of the connecting pipeline (9) is communicated with the gas mixing tank (6), and the other end of the connecting pipeline is connected with a gas inlet of the catalytic reactor (10); one end of the gas outlet pipeline (11) is connected with a gas outlet of the catalytic reactor (10); the detection system comprises a first gas detection device (14), a second gas detection device (15); the gas detection device is characterized in that a first gas detection device (14) is installed on the connecting pipeline (9), and a second gas detection device (15) is installed on the gas outlet pipeline (11).
4. The device for evaluating the performance of the catalyst for denitration and denitration of VOCs and dioxin according to claim 3, characterized in that: the nitrogen oxide gas source (1) adopts NO/Ar mixed gas; the VOCs simulation gas source (2) adopts toluene/Ar mixed gas; the dioxin simulated gas source (3) adopts chlorobenzene/Ar mixed gas; the number of the smoke component gas sources (4) is three, and O is respectively adopted2Mixed gas of/Ar and NH3Mixed gas of/Ar and pure Ar gas; the nitrogen oxide gas source (1), the VOCs simulation gas source (2), the dioxin simulation gas source (3) and each flue gas component gas source (4) all adopt steel cylinder standard concentration gas.
5. The device for evaluating the performance of the catalyst for denitration and denitration of VOCs and dioxin according to claim 4, characterized in that: the first gas detection device (14) and the second gas detection device (15) respectively comprise a NO concentration sensor, a toluene concentration sensor and a chlorobenzene concentration sensor.
6. The device for evaluating the performance of the catalyst for denitration and denitration of VOCs and dioxin according to claim 3, characterized in that: the smoke gas distribution system also comprises a first flow detection device (8), and the first flow detection devices (8) are respectively installed on the gas inlet pipelines (5).
7. The device for evaluating the performance of the catalyst for denitration and denitration of VOCs and dioxin according to claim 6, characterized in that: the cooperative desorption reaction system further comprises a second flow detection device (12) and a third flow detection device (13), the second flow detection device (12) is installed on the connecting pipeline (9), and the third flow detection device (13) is installed on the gas outlet pipeline (11).
8. The device for evaluating the performance of the catalyst for denitration and denitration of VOCs and dioxin according to claim 3, characterized in that: the catalytic reactor (10) adopts a fixed bed reactor and comprises a quartz reaction tube and an electric heating furnace, the quartz reaction tube can be used for placing a catalyst to be detected, the quartz reaction tube is installed in the electric heating furnace, and the electric heating furnace can be used for heating the quartz reaction tube at constant temperature.
9. A method for evaluating the performance of denitration and removal of VOCs and dioxin of a catalyst, which adopts the device for evaluating the performance of denitration and removal of VOCs and dioxin of a catalyst according to any one of claims 1 to 8, and comprises the following steps:
placing a catalyst to be detected in the cooperative removal reaction system;
preparing mixed gas containing nitrogen oxides, VOCs (volatile organic compounds) simulants and dioxin simulants;
and step three, enabling the mixed gas prepared in the step two to enter the collaborative removal reaction system to perform catalytic reaction with a catalyst to be detected, respectively detecting the concentration of nitrogen oxides, the concentration of VOCs (volatile organic chemicals) mimics and the concentration of dioxin mimics in the mixed gas before catalytic reaction and the mixed gas after catalytic reaction by the detection system, and calculating the catalytic efficiency.
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| CN103969315A (en) * | 2014-05-09 | 2014-08-06 | 南通亚泰船舶工程有限公司 | Denitration catalyst detection device and method |
| CN104509520A (en) * | 2014-12-20 | 2015-04-15 | 西北农林科技大学 | Controlled-atmosphere heating plate system for quickly estimating lethal characteristics of pests |
| CN205015140U (en) * | 2015-09-30 | 2016-02-03 | 上海海泰汽配有限公司 | Car air pipe reveals test fixture |
| CN110187048A (en) * | 2019-03-13 | 2019-08-30 | 华电电力科学研究院有限公司 | A kind of denitration catalyst performance testing device and test method |
| CN209690248U (en) * | 2019-03-21 | 2019-11-26 | 安徽元琛环保科技股份有限公司 | For detecting the device of catalyst efficiency |
| CN112444595A (en) * | 2019-08-29 | 2021-03-05 | 国家能源投资集团有限责任公司 | Device and method for jointly evaluating activity of denitration and demercuration catalyst |
| CN111044236A (en) * | 2019-12-31 | 2020-04-21 | 湖南明康中锦医疗科技发展有限公司 | Air tightness detection system and method for humidification water box of respiratory support equipment |
| CN111366677A (en) * | 2020-04-15 | 2020-07-03 | 华南理工大学 | SCR catalyst performance evaluation device for removing nitric oxide, benzene and toluene in cooperation |
| CN212514446U (en) * | 2020-07-27 | 2021-02-09 | 龙净科杰环保技术（上海）有限公司 | Device for simultaneously detecting denitration performance and dioxin removal performance of denitration catalyst |
| CN113244767A (en) * | 2021-04-06 | 2021-08-13 | 五邑大学 | Simultaneous catalytic removal of NOxAnd VOCs device and method |
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