CN103969315A - Denitration catalyst detection device and method - Google Patents
Denitration catalyst detection device and method Download PDFInfo
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- CN103969315A CN103969315A CN201410196866.4A CN201410196866A CN103969315A CN 103969315 A CN103969315 A CN 103969315A CN 201410196866 A CN201410196866 A CN 201410196866A CN 103969315 A CN103969315 A CN 103969315A
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Abstract
The invention discloses a denitration catalyst detection device. The catalyst detection device comprises a distribution system, a mixer, a heater, a reactor, a testing device and a control system, wherein the distribution system is used for providing mixed gas of N2, NO, NO2, O2, SO2 and CO2; the mixer is used for gas mixing; the heater is used for heating the mixed gas; the reactor is used for introducing NH3 and is provided with a catalyst; the testing device is used for testing the temperature, pressure, flow and content of each component in simulated flue gas consisting of the mixed gas and NH3; the control system is used for controlling the testing device; the distribution system is connected with the mixer; the mixer is connected with the heater; the heater is connected with the reactor; the testing device is respectively connected with the heater and the reactor. The device is easy to operate, low in price and comprehensive in detection performance. The washing resistance, gas flow resistance and optimal operating state of the catalyst are detected, and industrialization of catalyst performance detection devices is realized.
Description
Technical field
The present invention relates to a kind of catalyzer pick-up unit, specifically relate to a kind of denitrating catalyst pick-up unit and method thereof.
Background technology
Catalytic reaction system is the core of SCR technique, and catalyzer is the key of whole SCR system, and the design of catalyzer and selection determined by flue gas condition, component, and three interactional factors that affect its design are nitrogen oxide NOx removal efficiency, NH
3escapement ratio and catalyst volume.
State's inner catalyst development is at present rapid, but the quality of catalyzer is but uneven.Desirable catalyzer should possess following advantage: high activity, anti-poisoning capability are strong, selectivity strong, have that suitable working temperature interval, life-span are long, cost is low.Such catalyzer just can be applied to actual industrial processes.At present the detection means of catalyzer is existed to short slab, the processes such as lab scale, pilot scale and commerical test are passed through in the exploitation of catalyzer always, consuming time longer.And can not comprehensively reflect the existing weak point of catalyzer, the improvement of catalyzer is lacked to constructive directive function, bring huge waste to social resources.
Therefore, need a kind of simple to operate, low price of exploitation, the comprehensive denitrating catalyst pick-up unit of detection performance and method thereof.
Summary of the invention
The object of the invention is for a kind of low price being provided, detecting the comprehensive denitrating catalyst pick-up unit of performance and method thereof.
In order to realize above-mentioned technical purpose, the technical solution used in the present invention is as follows: a kind of denitrating catalyst pick-up unit, described catalyzer pick-up unit comprises, N is provided
2, NO, NO
2, O
2, SO
2and CO
2the gas distributing system of mixed gas; The mixer mixing for gas; For the well heater that mixed gas is heated; Access NH
3and be provided with the reactor of catalyzer; To mixed gas and NH
3the simulated flue gas of composition carries out temperature, pressure, flow, the proving installation of each component concentration test; For the control system that proving installation is controlled;
Described gas distributing system is connected with mixer; Described mixer is connected with well heater; Described well heater is connected with reactor, and described proving installation is connected with reactor with well heater respectively, proving installation by signal feedback to control system.
Further, described proving installation comprises flue gas analyzer, pressure transducer and temperature sensor; Described well heater comprises primary heater and secondary heater;
Described temperature sensor comprises for detection of the first temperature sensor of mixed gas temperature before heating with for detection of the second temperature sensor that heats rear mixed gas temperature;
Described flue gas analyzer comprises for detection of reacting the first flue gas analyzer of each component concentration in front simulation flue gas and the second flue gas analyzer for detection of each component concentration in simulated flue gas; Described pressure transducer comprises for detection of the first pressure transducer of reaction front simulation flue gas pressures with for detection of second pressure transducer of simulating flue gas pressures after reaction;
Between described primary heater and secondary heater, be provided with the first temperature sensor, described secondary heater is connected with the entrance of the second temperature sensor, the first flue gas analyzer, the first pressure transducer and reactor successively; The outlet of described reactor is connected with the second pressure transducer with the second flue gas analyzer successively.
Further, described denitrating catalyst pick-up unit also comprises first flow meter, pneumatic control valve and NH is provided
3nH
3calibrating gas bottle; Described reactor successively with first flow meter, pneumatic control valve and NH
3calibrating gas bottle is connected; The heating-up temperature scope of described primary heater and secondary heater is 100-600 DEG C;
Described gas distributing system comprises gas cylinder, reduction valve, pressure gauge, flow valve, the second flowmeter and retaining valve; Described gas cylinder, reduction valve, pressure gauge, flow valve, the second flowmeter are connected successively with retaining valve; Described gas cylinder comprises NO gas standard gas cylinder, NO
2gas standard gas cylinder, N
2gas standard gas cylinder, O
2gas standard gas cylinder, SO
2gas standard gas cylinder and CO
2gas standard gas cylinder.
Further, the flow of described NO is 0-100L/min; NO
2flow 0-100L/min; SO
2flow is 0-200L/min; N
2flow 0-1000L/min; O
2flow 0-300L min; CO
2flow be 0-400L/min.
Further, described reactor comprises for detection of the reactor of automotive catgalyst or is directly used in the reactor that detects automobile, ship or power plant catalyzer; The described reactor for detection of automotive catgalyst is right cylinder, and described cylindrical bottom surface diameter is 50-500mm, and cylindrical height is 200-2000mm; The described reactor that is directly used in detection automobile, ship or power plant's catalyzer is rectangular parallelepiped, and the length of described rectangular parallelepiped is 50-500mm, and the height of described rectangular parallelepiped is 200-3000mm; Described mixer is dynamic mixer; Described flow is counted mass flowmeter.
Denitrating catalyst pick-up unit of the present invention is for detection of the application of the detection of denitration efficiency, ammonia nitrogen ratio, the escaping of ammonia rate and the Sulphur Dioxide rate of catalyzer.
Denitrating catalyst detection method of the present invention, comprises the steps:
(1) by the gas composition N in gas distributing system (1)
2, NO, NO
2, O
2, SO
2and CO
2pass into and in mixer, be mixed to get mixed gas;
(2) mixed gas is passed in well heater, heating-up temperature scope is 100-600 DEG C;
(3) access NH
3, by NH
3passing into the mixed gas composition simulated flue gas after heating the reactor that contains catalyzer reacts;
(4) the entrance and exit place of described reactor is separately installed with temperature sensor, flue gas analyzer and pressure transducer, and by control system control temperature, pressure, each component concentration, obtain data and feed back to control system, control system is processed it.
Further, in step (2), described well heater is connected with temperature sensor; Before and after described temperature sensor Real-time Feedback heating, the temperature signal of mixed gas is to control system, and control system receives after temperature signal, if be not inconsistent with setting value, described control system regulates by the power to well heater; Thereby regulate the temperature of mixed gas;
In step (4), gas composition content before and after reaction in simulated flue gas detects by flue gas analyzer, described flue gas analyzer compares the data obtained, calculate, and draws denitration efficiency, activity, the escaping of ammonia rate and the Sulphur Dioxide rate of catalyzer; Described flue gas analyzer is by the signal Real-time Feedback of the each component concentration in simulated flue gas before and after reaction to control system, and described control system is carried out the uninterrupted of regulating system by controlling flowmeter; If the gas concentration that the first flue gas analyzer records is C1, the concentration that the second flue gas analyzer records is C2, and the denitration efficiency of catalyzer, Sulphur Dioxide rate are
the escaping of ammonia rate can be obtained according to ammonia spraying amount and denitration rate, the activity value of catalyzer can be obtained according to the flow of flue gas and catalyzer self parameter; Described flowmeter also comprises first flow meter; Described control system regulates NH by controlling first flow meter
3uninterrupted, described control system regulates N by controlling the second flowmeter
2, NO, NO
2, O
2, SO
2and CO
2the uninterrupted of each component gas;
The pressure of described simulated flue gas before and after reaction carries out pressure detection by pressure transducer, detects the best operating condition of the scour resistance, gas flow resistance and the catalyzer that draw catalyzer; Described pressure transducer is by the pressure signal Real-time Feedback of simulated flue gas before and after reaction to control system, and described control system is by controlling the pressure size of reduction valve adjustments of gas.
Further, in step (1), described gas composition is by the second flowmeter control gas flow in gas distributing system, via second flowmeter of flowing through after the reduction valve decompression for the pressure size of adjustments of gas component in gas distributing system, then enters mixer;
In step (2), described well heater comprises primary heater and secondary heater; Described mixed gas enters primary heater, secondary heater successively, and mixed gas is carried out to two-stage electrical heating;
Described temperature sensor comprises for detection of the first temperature sensor of mixed gas temperature before heating with for detection of the second temperature sensor that heats rear mixed gas temperature;
In step (3), the gas after heating with press the NH of 0.8-1.0 ammonia nitrogen mol ratio
3/ NOx enters reactor and reacts; In step (4), described pressure transducer comprises the first pressure transducer and the second pressure transducer; The pressure of the simulated flue gas before described reaction is detected by the first pressure transducer, and the pressure of reacted simulated flue gas is detected by the second pressure transducer;
Described flue gas analyzer comprises the first flue gas analyzer and the second flue gas analyzer; Gas composition content in simulated flue gas before reaction is detected by the first flue gas analyzer, and in reacted simulated flue gas, gas composition content is detected by the second flue gas analyzer.
Beneficial effect: the present invention is simple to operate, low price, detection performance are comprehensive.Control system of the present invention can be controlled the parameter such as content, temperature and pressure of the each component of gas in reactor in real time, the parameters such as denitration rate, the escaping of ammonia rate, sulphur conversion ratio, scour resistance, the gas flow resistance of catalyzer, the optimum Working of catalyzer be can well detect, systematization and the industrialization of catalyst performance pick-up unit realized.
Brief description of the drawings
Fig. 1 denitrating catalyst device for detecting performance process flow diagram;
Fig. 2 gas distributing system schematic diagram;
Fig. 3 electric heater profile schematic diagram;
Wherein: 1 gas distributing system; 2 mixers; 3 primary heaters; 4 first temperature sensors; 5 secondary heaters; 6 first flue gas analyzers; 7 first pressure transducers; 8 reactors; 9 first flow meters; 10 pneumatic control valve doors; 11 second temperature sensors; 12 second flue gas analyzers; 13 second pressure transducers; 14NH
3calibrating gas bottle; 15 second flowmeters; 16 reduction valve; 17 control system; 18 pressure gauges; 19 flow valves; 20 retaining valves.
Embodiment
Embodiment 1
As shown in Figure 1 to Figure 3, a kind of denitrating catalyst pick-up unit, described catalyzer pick-up unit comprises, N is provided
2, NO, NO
2, O
2, SO
2and CO
2the gas distributing system 1 of mixed gas; The mixer 2 mixing for gas; For the well heater that mixed gas is heated; Access NH
3and be provided with the reactor 8 of catalyzer; To mixed gas and NH
3the simulated flue gas of composition carries out temperature, pressure, flow, the proving installation of each component concentration test; For the control system 17 that proving installation is controlled;
Described gas distributing system 1 is connected with mixer 2; Described mixer 2 is connected with well heater; Described well heater is connected with reactor 8, and described proving installation is connected with reactor 8 with well heater respectively, proving installation by signal feedback to control system 17.
Duct length between spray ammonia mouth and reactor 8 entrances is relative longer, is convenient to the mixing between gas.
Described proving installation comprises flue gas analyzer, pressure transducer and temperature sensor; Described well heater comprises primary heater 3 and secondary heater 5; Described temperature sensor comprises for detection of the first temperature sensor 4 of mixed gas temperature before heating with for detection of the second temperature sensor 11 that heats rear mixed gas temperature;
Described flue gas analyzer comprises for detection of reacting the first flue gas analyzer 6 of each component concentration in front simulation flue gas and the second flue gas analyzer 12 for detection of each component concentration in simulated flue gas; Described flue gas analyzer is galvanochemistry type sensor, can accurately detect N
2, O
2, CO
2, NO, NO
2, SO
2, NH
3content, be accurate to and can reach 1ppm;
Described pressure transducer comprises for detection of the first pressure transducer 7 of reaction front simulation flue gas pressures with for detection of second pressure transducer 13 of simulating flue gas pressures after reaction; Described pressure transducer can show in this locality the relative pressure of gas, and unit is Pa, simultaneously also can be by gaseous tension Real-time Feedback to controller.
Between described primary heater 3 and secondary heater 5, be provided with the temperature that the first temperature sensor 4, the first temperature sensors 4 can demonstrate in this locality gas, simultaneously also can be by gas temperature Real-time Feedback to controller; Described secondary heater 5 is connected with the entrance of reactor 8 with the second temperature sensor 11, the first flue gas analyzer 6, the first pressure transducer 7 successively; The outlet of described reactor 8 is connected with the second pressure transducer 13 with the second flue gas analyzer 12 successively.
Described denitrating catalyst pick-up unit also comprises first flow meter 9, pneumatic control valve 10 and NH is provided
3nH
3calibrating gas bottle 14; Described reactor 8 successively with first flow meter 9, pneumatic control valve 10 and NH
3calibrating gas bottle 14 is connected; The heating-up temperature scope of described primary heater 3 and secondary heater 5 is 100-600 DEG C; Primary heater 3, secondary heater 5 adopt electric heater for heating gas, and the power of well heater is adjustable, analog gas can be heated to the highest 600 DEG C; Can reach fast target nitrogen ammonia mol ratio by the adjusting of pneumatic control valve door 10;
Described gas distributing system 1 comprises gas cylinder, reduction valve 16, pressure gauge 18, flow valve 19, the second flowmeter 15 and retaining valve 20; Described gas cylinder, reduction valve 16, pressure gauge 18, flow valve 19, the second flowmeter 15 are connected successively with retaining valve 20; Described gas cylinder comprises NO gas standard gas cylinder, NO
2gas standard gas cylinder, N
2gas standard gas cylinder, O
2gas standard gas cylinder, SO
2gas standard gas cylinder and CO
2gas standard gas cylinder.
The flow of described NO is 0-100L/min; NO
2flow 0-100L/min; SO
2flow is 0-200L/min; N
2flow 0-1000L/min; O
2flow 0-300L min; CO
2flow be 0-400L/min.
Composition, purity, Balance Air and pressure gases used in described simulated flue gas see the following form, and table 1 is as follows:
Table 1
| Composition | Gas purity (%) | Balance Air | Pressure (MPa) |
| N 2 | High-purity gas | —— | 15MPa |
| O 2 | High-purity gas | —— | 15MPa |
| CO 2 | High-purity gas | —— | 15MPa |
| NO | 50％ | N 2 | 1.5MPa |
| NO 2 | 10％ | N 2 | 1.5MPa |
| SO 2 | 50％ | N 2 | 1.5MPa |
| NH 3 | 51％ | N 2 | 1.5MPa |
In table 1, the effect of described Balance Air is exactly the infringement to human body for fear of toxic gas; Described pressure is the pressure in gas cylinder.
Described reactor 8 comprises for detection of the reactor 8 of automotive catgalyst or is directly used in the reactor 8 that detects automobile, ship or power plant catalyzer; The described reactor 8 for detection of automotive catgalyst is right cylinder, and described cylindrical bottom surface diameter is 50-500mm, and cylindrical height is 200-2000mm; The described reactor 8 that is directly used in detection automobile, ship or power plant's catalyzer is rectangular parallelepiped, and the length of described rectangular parallelepiped is 50-500mm, and the height of described rectangular parallelepiped is 200-3000mm; Described mixer 2 is dynamic mixer; Described flow is counted mass flowmeter.Described reactor 8 is catalytic reactor, and catalytic reactor is the place of carrying out of reaction, adopts the catalytic reactor without Taper Pipe section, and gas flowfield is more satisfactory;
Denitrating catalyst pick-up unit of the present invention is for detection of the application of the detection of denitration efficiency, ammonia nitrogen ratio, the escaping of ammonia rate and the Sulphur Dioxide rate of catalyzer.
Denitrating catalyst detection method of the present invention, comprises the steps:
(1) by the gas composition N in gas distributing system (1)
2, NO, NO
2, O
2, SO
2and CO
2pass in mixer 2 and be mixed to get mixed gas;
(2) mixed gas is passed in well heater, heating-up temperature scope is 100-600 DEG C;
(3) access NH
3, by NH
3passing into the mixed gas composition simulated flue gas after heating the reactor 8 that contains catalyzer reacts;
(4) the entrance and exit place of described reactor 8 is separately installed with temperature sensor, flue gas analyzer and pressure transducer, and control temperature, pressure, each component concentration by control system 17, obtain data and feed back to control system 17, control system 17 is processed it.
In step (2), described well heater is connected with temperature sensor; Before and after described temperature sensor Real-time Feedback heating, the temperature signal of mixed gas is to control system 17, and control system 17 receives after temperature signal, if be not inconsistent with setting value, described control system 17 regulates by the power to well heater; Thereby regulate the temperature of mixed gas;
In step (4), gas composition content before and after reaction in simulated flue gas detects by flue gas analyzer, described flue gas analyzer compares the data obtained, calculate, and draws denitration efficiency, activity, the escaping of ammonia rate and the Sulphur Dioxide rate of catalyzer; Described flue gas analyzer is by the signal Real-time Feedback of the each component concentration in simulated flue gas before and after reaction to control system 17, and described control system 17 is carried out the uninterrupted of regulating system by controlling flowmeter; If the gas concentration that the first flue gas analyzer records is C1, the concentration that the second flue gas analyzer records is C2, and the denitration efficiency of catalyzer, Sulphur Dioxide rate are
the escaping of ammonia rate can be obtained according to ammonia spraying amount and denitration rate, the activity value of catalyzer can be obtained according to the flow of flue gas and catalyzer self parameter; Described flowmeter also comprises first flow meter 9; Described control system 17 regulates NH by controlling first flow meter 9
3uninterrupted, described control system 17 regulates N by controlling the second flowmeter 15
2, NO, NO
2, O
2, SO
2and CO
2the uninterrupted of each component gas; First flow meter 9 is NH
3mass flowmeter, can be by NH
3flow feeds back to controller;
The pressure of described simulated flue gas before and after reaction carries out pressure detection by pressure transducer, detects the best operating condition of the scour resistance, gas flow resistance and the catalyzer that draw catalyzer; Described pressure transducer is by the pressure signal Real-time Feedback of simulated flue gas before and after reaction to control system 17, and described control system 17 is by controlling the pressure size of reduction valve 16 adjustments of gas.
In step (1), described gas composition is controlled gas flow by the second flowmeter 15 in gas distributing system 1, via second flowmeter 15 of flowing through after reduction valve 16 decompressions for the pressure size of adjustments of gas component in gas distributing system 1, then enter mixer 2; By regulating the pressure size that reduction valve 16 can adjustments of gas, thereby can detect the scour resistance of catalyzer;
In step (2), described well heater comprises primary heater 3 and secondary heater 5; Described mixed gas enters primary heater 3, secondary heater 5 successively, and mixed gas is carried out to two-stage electrical heating;
Described temperature sensor comprises for detection of the first temperature sensor 4 of mixed gas temperature before heating with for detection of the second temperature sensor 11 that heats rear mixed gas temperature;
In step (3), the gas after heating with press the NH of 0.8-1.0 ammonia nitrogen mol ratio
3/ NOx enters reactor 8 and reacts; In step (4), described pressure transducer comprises the first pressure transducer 7 and the second pressure transducer 13; The pressure of the simulated flue gas before described reaction is detected by the first pressure transducer 7, and the pressure of reacted simulated flue gas is detected by the second pressure transducer 13;
Described flue gas analyzer comprises the first flue gas analyzer 6 and the second flue gas analyzer 12; Gas composition content in simulated flue gas before reaction is detected by the first flue gas analyzer 6, and in reacted simulated flue gas, gas composition content is detected by the second flue gas analyzer 12.
The present invention is simple to operate, low price, detection performance are comprehensive.Control system of the present invention can be controlled the parameter such as content, temperature and pressure of the each component of gas in reactor in real time, the parameters such as denitration rate, the escaping of ammonia rate, sulphur conversion ratio, scour resistance, the gas flow resistance of catalyzer, the optimum Working of catalyzer be can well detect, systematization and the industrialization of catalyst performance pick-up unit realized.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned implementation method.Therefore the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition,, although this instructions has used some specific terms, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (9)
1. a denitrating catalyst pick-up unit, is characterized in that: described catalyzer pick-up unit comprises, N is provided
2, NO, NO
2, O
2, SO
2and CO
2the gas distributing system (1) of mixed gas; The mixer (2) mixing for gas; For the well heater that mixed gas is heated; Access NH
3and be provided with the reactor (8) of catalyzer; To mixed gas and NH
3the simulated flue gas of composition carries out temperature, pressure, flow, the proving installation of each component concentration test; For the control system (17) that proving installation is controlled;
Described gas distributing system (1) is connected with mixer (2); Described mixer (2) is connected with well heater; Described well heater is connected with reactor (8), and described proving installation is connected with reactor (8) with well heater respectively, proving installation by signal feedback to control system (17).
2. denitrating catalyst pick-up unit according to claim 1, is characterized in that: described proving installation comprises flue gas analyzer, pressure transducer and temperature sensor; Described well heater comprises primary heater (3) and secondary heater (5);
Described temperature sensor comprises for detection of first temperature sensor (4) of mixed gas temperature before heating with for detection of the second temperature sensor (11) that heats rear mixed gas temperature;
Described flue gas analyzer comprises for detection of reacting first flue gas analyzer (6) of each component concentration in front simulation flue gas and the second flue gas analyzer (12) for detection of each component concentration in simulated flue gas; Described pressure transducer comprises for detection of first pressure transducer (7) of reaction front simulation flue gas pressures with for detection of second pressure transducer (13) of simulating flue gas pressures after reaction;
Between described primary heater (3) and secondary heater (5), be provided with the first temperature sensor (4), described secondary heater (5) is connected with the second temperature sensor (11), the first flue gas analyzer (6), the first pressure transducer (7) and the entrance of reactor (8) successively; The outlet of described reactor (8) is connected with the second pressure transducer (13) with the second flue gas analyzer (12) successively.
3. denitrating catalyst pick-up unit according to claim 1, is characterized in that: described denitrating catalyst pick-up unit also comprises first flow meter (9), pneumatic control valve (10) and NH is provided
3nH
3calibrating gas bottle (14); Described reactor (8) successively with first flow meter (9), pneumatic control valve (10) and NH
3calibrating gas bottle (14) is connected; The heating-up temperature scope of described primary heater (3) and secondary heater (5) is 100-600 DEG C;
Described gas distributing system (1) comprises gas cylinder, reduction valve (16), pressure gauge (18), flow valve (19), the second flowmeter (15) and retaining valve (20); Described gas cylinder, reduction valve (16), pressure gauge (18), flow valve (19), the second flowmeter (15) and retaining valve (20) are connected successively; Described gas cylinder comprises NO gas standard gas cylinder, NO
2gas standard gas cylinder, N
2gas standard gas cylinder, O
2gas standard gas cylinder, SO
2gas standard gas cylinder and CO
2gas standard gas cylinder.
4. denitrating catalyst pick-up unit according to claim 3 is characterized in that: the flow of described NO is 0-100L/min; NO
2flow 0-100L/min; SO
2flow is 0-200L/min; N
2flow 0-1000L/min; O
2flow 0-300L min; CO
2flow be 0-400L/min.
5. denitrating catalyst pick-up unit according to claim 1, is characterized in that: described reactor (8) comprises the reactor (8) for detection of automotive catgalyst or is directly used in the reactor (8) that detects automobile, ship or power plant catalyzer; The described reactor for detection of automotive catgalyst (8) is right cylinder, and described cylindrical bottom surface diameter is 50-500mm, and cylindrical height is 200-2000mm; The described reactor (8) that is directly used in detection automobile, ship or power plant's catalyzer is rectangular parallelepiped, and the length of described rectangular parallelepiped is 50-500mm, and the height of described rectangular parallelepiped is 200-3000mm; Described mixer (2) is dynamic mixer; Described flow is counted mass flowmeter.
6. the application for detection of the detection of denitration efficiency, ammonia nitrogen ratio, the escaping of ammonia rate and the Sulphur Dioxide rate of catalyzer according to the denitrating catalyst pick-up unit described in claim 1-5 any one.
7. denitrating catalyst detection method according to claim 1, is characterized in that comprising the steps:
(1) by the gas composition N in gas distributing system (1)
2, NO, NO
2, O
2, SO
2and CO
2pass in mixer (2) and be mixed to get mixed gas;
(2) mixed gas is passed in well heater, heating-up temperature scope is 100-600 DEG C;
(3) access NH
3, by NH
3passing into the mixed gas composition simulated flue gas after heating the reactor (8) that contains catalyzer reacts;
(4) the entrance and exit place of described reactor (8) is separately installed with temperature sensor, flue gas analyzer and pressure transducer, and control temperature, pressure, each component concentration by control system (17), obtain data and feed back to control system (17), control system (17) is processed it.
8. denitrating catalyst detection method according to claim 7, is characterized in that:
In step (2), described well heater is connected with temperature sensor; Before and after described temperature sensor Real-time Feedback heating, the temperature signal of mixed gas is to control system (17), control system (17) receives after temperature signal, if be not inconsistent with setting value, described control system (17) regulates by the power to well heater; Thereby regulate the temperature of mixed gas;
In step (4), gas composition content before and after reaction in simulated flue gas detects by flue gas analyzer, described flue gas analyzer compares the data obtained, calculate, and draws denitration efficiency, activity, the escaping of ammonia rate and the Sulphur Dioxide rate of catalyzer; Described flue gas analyzer is by the signal Real-time Feedback of the each component concentration in simulated flue gas before and after reaction to control system (17), and described control system (17) is carried out the uninterrupted of regulating system by controlling flowmeter; If the gas concentration that the first flue gas analyzer records is C1, the concentration that the second flue gas analyzer records is C2, and the denitration efficiency of catalyzer, Sulphur Dioxide rate are
the escaping of ammonia rate can be obtained according to ammonia spraying amount and denitration rate, the activity value of catalyzer can be obtained according to the flow of flue gas and catalyzer self parameter; Described flowmeter also comprises first flow meter (9); Described control system (17) regulates NH by controlling first flow meter (9)
3uninterrupted, described control system (17) by control the second flowmeter (15) regulate N
2, NO, NO
2, O
2, SO
2and CO
2the uninterrupted of each component gas;
The pressure of described simulated flue gas before and after reaction carries out pressure detection by pressure transducer, detects the best operating condition of the scour resistance, gas flow resistance and the catalyzer that draw catalyzer; Described pressure transducer is by the pressure signal Real-time Feedback of simulated flue gas before and after reaction to control system (17), and described control system (17) is by controlling the pressure size of reduction valve (16) adjustments of gas.
9. denitrating catalyst detection method according to claim 7, it is characterized in that: in step (1), described gas composition is controlled gas flow by the second flowmeter (15) in gas distributing system (1), via the second flowmeter (15) of flowing through after reduction valve (16) decompression for the pressure size of adjustments of gas component in gas distributing system (1), then enter mixer (2);
In step (2), described well heater comprises primary heater (3) and secondary heater (5); Described mixed gas enters primary heater (3), secondary heater (5) successively, and mixed gas is carried out to two-stage electrical heating;
Described temperature sensor comprises for detection of first temperature sensor (4) of mixed gas temperature before heating with for detection of the second temperature sensor (11) that heats rear mixed gas temperature;
In step (3), the gas after heating with press the NH of 0.8-1.0 ammonia nitrogen mol ratio
3/ NOx enters reactor (8) and reacts; In step (4), described pressure transducer comprises the first pressure transducer (7) and the second pressure transducer (13); The pressure of the simulated flue gas before described reaction is detected by the first pressure transducer (7), and the pressure of reacted simulated flue gas is detected by the second pressure transducer (13);
Described flue gas analyzer comprises the first flue gas analyzer (6) and the second flue gas analyzer (12); Gas composition content in simulated flue gas before reaction is detected by the first flue gas analyzer (6), and in reacted simulated flue gas, gas composition content is detected by the second flue gas analyzer (12).
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|---|---|---|---|
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866322A (en) * | 2016-05-03 | 2016-08-17 | 浙江三龙催化剂有限公司 | Mobile flue gas denitrification catalyst performance testing device |
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| CN114113452A (en) * | 2021-10-26 | 2022-03-01 | 安徽元琛环保科技股份有限公司 | Evaluation device and evaluation method for denitration and denitration of catalyst, VOCs and dioxin |
| CN114894954A (en) * | 2022-06-09 | 2022-08-12 | 上海康恒环境股份有限公司 | Catalyst performance detection device |
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| CN105866322A (en) * | 2016-05-03 | 2016-08-17 | 浙江三龙催化剂有限公司 | Mobile flue gas denitrification catalyst performance testing device |
| CN106596832A (en) * | 2016-06-02 | 2017-04-26 | 华纳创新（北京）科技有限公司 | SCR denitration catalyst evaluation device |
| CN106932526A (en) * | 2017-04-12 | 2017-07-07 | 华能国际电力股份有限公司 | One kind is used for denitrating catalyst cryogenic property characterization processes and device |
| CN108132211A (en) * | 2018-02-24 | 2018-06-08 | 华能国际电力股份有限公司 | A kind of supercritical carbon dioxide corrosion testing apparatus and application method |
| CN109085297A (en) * | 2018-08-16 | 2018-12-25 | 中山市洁鼎过滤制品有限公司 | A kind of catalytic materials test device |
| CN109387606A (en) * | 2018-11-27 | 2019-02-26 | 清华大学盐城环境工程技术研发中心 | A kind of SCR denitration full-scale performance evaluation system |
| CN109682923B (en) * | 2018-12-17 | 2021-03-12 | 中国科学院过程工程研究所 | Full-size SCR denitration catalyst evaluation system and method |
| CN109444218A (en) * | 2018-12-17 | 2019-03-08 | 西南科技大学 | Improved ambient condition simulator and application method in a kind of reaction of oxidation kinetics |
| CN109682923A (en) * | 2018-12-17 | 2019-04-26 | 中国科学院过程工程研究所 | A kind of full-scale SCR denitration evaluation system and method |
| CN109444218B (en) * | 2018-12-17 | 2024-02-20 | 西南科技大学 | Improved environment state simulation device in oxidation kinetics reaction and use method |
| CN109932472A (en) * | 2019-03-05 | 2019-06-25 | 华电电力科学研究院有限公司 | A kind of SCR denitration device for detecting performance and detection method |
| 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 |
| CN111781296A (en) * | 2020-08-04 | 2020-10-16 | 大唐南京环保科技有限责任公司 | Flat plate type denitration catalyst activity detection system and method |
| CN114910599A (en) * | 2021-02-08 | 2022-08-16 | 广州汽车集团股份有限公司 | Catalyst performance testing device |
| CN113552280A (en) * | 2021-07-20 | 2021-10-26 | 大唐南京环保科技有限责任公司 | Sulfur dioxide gas distribution device and method for detecting performance of flue gas denitration catalyst |
| CN114113452A (en) * | 2021-10-26 | 2022-03-01 | 安徽元琛环保科技股份有限公司 | Evaluation device and evaluation method for denitration and denitration of catalyst, VOCs and dioxin |
| CN114894954A (en) * | 2022-06-09 | 2022-08-12 | 上海康恒环境股份有限公司 | Catalyst performance detection device |
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