CN109060704A - A kind of SNCR denitration engineering test platform - Google Patents
A kind of SNCR denitration engineering test platform Download PDFInfo
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- CN109060704A CN109060704A CN201810917159.8A CN201810917159A CN109060704A CN 109060704 A CN109060704 A CN 109060704A CN 201810917159 A CN201810917159 A CN 201810917159A CN 109060704 A CN109060704 A CN 109060704A
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 138
- 239000007789 gas Substances 0.000 claims abstract description 84
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 69
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 238000005070 sampling Methods 0.000 claims abstract description 41
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003546 flue gas Substances 0.000 claims abstract description 24
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 239000000498 cooling water Substances 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 11
- 230000003028 elevating effect Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000010183 spectrum analysis Methods 0.000 claims description 7
- 230000008901 benefit Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000012495 reaction gas Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000000446 fuel Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910006295 Si—Mo Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000001307 laser spectroscopy Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention provides a kind of SNCR denitration engineering test platform, including distribution gas handling system, plug flow reactor assembly and sampling and testing system；Plug flow reactor assembly includes boiler tube, and outside is provided with electric heater, and boiler tube bottom is connected with the blower for pumping；Distribution gas handling system includes for two groups of gas bottles with gas cylinder, first group includes nitrogen cylinder, oxygen cylinder, dioxide bottle and nitric oxide gas cylinder, each gas bottle gas outlet is sequentially connected pressure reducing valve and mass flowmenter respectively, steam generator and mixed air preheater entrance is connected in metering again, mixed air preheater outlet is connect by mixed gas sample injection gun with boiler tube, second group includes nitrogen cylinder and ammonia bottle, the two gas outlet is sequentially connected pressure reducing valve and mass flowmenter respectively, then is connect by ammonia sample injection gun with boiler tube；Sampling and testing system is connect with boiler tube, for measuring the concentration of ammonia in flue gas gas after denitration.By distribution simulated flue gas, it can be achieved that exhaust gas components are stablized, experimental condition repeatability is high.
Description
Technical field
The invention belongs to flue gas pollutant field of purification, are related to a kind of SNCR denitration engineering test platform.
Background technique
The fossil fuel such as coal, petroleum, natural gas can generate nitrogen oxides (NOx) in combustion, and substance of this kind is discharged into
Atmosphere is one of main reason of acid rain.There are mainly three types of approach by the NOx generated in combustion process: (1) heating power type, fuel combustion
Contain nitrogen in the air blasted in burning, oxidation generates nitrogen oxides at high temperature；(2) Quick-type, by fuel combustion process
The CH atomic group of generation hits N2Molecule generates CN class compound, and further oxidation generates nitrogen oxides；(3) fuel type, combustion
Itrogenous organic substance in material volatilizees release oxygenolysis in combustion for nitrogen oxides.
For the NOx that removing fossil fuel generate in combustion, selective non-catalytic reduction removing NOx skill can be used
Art.The technology is that the reducing agent containing NHi base is sprayed into the region that fire box temperature is 800~1000 DEG C, with the NOx in flue gas
It is reacted, generates N2.For this method using burner hearth as reactor, technological system is simple, and denitration efficiency is reachable after process optimization
50% or more.
SNCR denitration technical principle are as follows: 4NH3+4NO+O2→4N2+6H2O, the chemical reaction course is complicated, existing research table
Bright, in the reaction time, reaction temperature, oxygen content of smoke gas, the factors such as flying dust have an impact to denitration efficiency, for research denitration efficiency and
Relationship between each influence factor is needed through testing stand come analog fuel burning and SNCR denitration process.
Fuel is passed through in boiler tube by existing testing stand by screw rod batcher, and blower blasts air, raw after fuel combustion
At flue gas, it is passed through reducing agent or other additives in boiler tube specific position, is polluted for studying in fuel combustion process and flue gas
Object subtractive process.The generating mode of flue gas is identical as production reality in this type testing stand, but since fuel performance is not easy to tie up
It holds constant, it will the repeatability of test is had an impact.Meanwhile existing testing stand is when carrying out SNCR denitration test, to de-
The measurement of concetration precision of ammonia in flue gas gas is not high after nitre, influences the accuracy of test.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of SNCR denitration engineering test platform is provided, is led to
Distribution simulated flue gas is crossed, it can be achieved that exhaust gas components are stablized, experimental condition repeatability is high.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of SNCR denitration engineering test platform, including distribution gas handling system, plug flow reactor assembly and sampling and testing system
System；
The plug flow reactor assembly includes boiler tube, and outside is provided with electric heater, and boiler tube bottom is connected with for taking out
The blower of gas；
The distribution gas handling system includes for two groups of gas bottles with gas cylinder, and first group includes nitrogen cylinder, oxygen cylinder, dioxy
Change carbon gas cylinder and nitric oxide gas cylinder, each gas bottle gas outlet is sequentially connected pressure reducing valve and mass flowmenter respectively, then with metering
Steam generator is simultaneously connected in mixed air preheater entrance, and mixed air preheater outlet is connect by mixed gas sample injection gun with boiler tube, and second
Group includes nitrogen cylinder and ammonia bottle, and the two gas outlet is sequentially connected pressure reducing valve and mass flowmenter respectively, then passes through ammonia sample introduction
Rifle is connect with boiler tube；
The sampling and testing system is connect with boiler tube, for measuring the concentration of ammonia in flue gas gas after denitration.
Preferably, it second assembles after gas cylinder gas outlet is sequentially connected pressure reducing valve and mass flowmenter respectively, also by mending ammonia
Sample injection gun is connect with boiler tube.
Further, it is provided with ammonia sample injection gun cooling water pipeline on ammonia sample injection gun, mends and is provided with benefit ammonia on ammonia sample injection gun
Sample injection gun cooling water pipeline.
Further, ammonia sample injection gun and benefit ammonia sample injection gun internal layer are fine quartz glass tube, and outer layer is water cold sleeve.
Preferably, be provided with insulating layer outside boiler tube, it is wrapped in electric heater in, electric heater is warm by temperature control
Galvanic couple is connected with temperature control system.
Preferably, the sampling and testing system includes the sampling gun for extracting hybrid reaction gas in boiler tube, one end with
Boiler tube connection, the other end are passed through optical detection feeler lever one end by heat tracing diamond heating, optical detection feeler lever other end difference
It is connected with the escaping of ammonia laser spectral analysis instrument and aspiration pump.
Further, sampling gun stretching boiler tube part is connected with flue gas analyzer.
Further, boiler tube outer portion is stretched out in sampling gun be provided with sampling gun elevating mechanism.
Further, sampling gun stretching boiler tube outer portion is provided with sampling gun cooling water pipeline.
Preferably, the distribution gas handling system, in plug flow reactor assembly and sampling and testing system, each gas piping material
Matter is all made of 316L stainless steel.
Compared with prior art, the invention has the following advantages:
Testing stand of the present invention by gas in gas bomb after pressure reducing valve release, is passed through by way of distribution
The mass flowmenter metering of each branch setting, is passed through mixed gas preheating chamber, is uniformly mixed preheating by mixed gas preheating chamber, by mixed gas into
Sample rifle is passed through boiler tube upper position.Ammonia is carried by nitrogen, after distinguishing accurate measurement by mass flowmenter, is passed through boiler tube constant temperature
Section starting position；So as to accurately be set according to test demand to each component in simulated flue gas, make distribution component ratio
Example maintains constant, the repeatability of guarantee test condition.
Further, by the way that ammonia is divided into two-way, gas is passed through boiler tube constant temperature zone start bit through ammonia sample injection gun all the way
It sets；Another way gas will mend ammonia sample injection gun and protrude into boiler tube different location, spray into boiler tube, so as to try according to test needs
Test influence of the substep spray ammonia to denitration efficiency.
Further, by being provided with recirculated cooling water pipeline in ammonia sample injection gun and benefit ammonia sample injection gun, to prevent ammonia
It decomposes at high temperature, influences test effect.
Further, by setting fine quartz glass tube for ammonia sample injection gun and benefit ammonia sample injection gun internal layer, to reduce ammonia
Absorption of the gas in tube wall, metering precision during guarantee test.
Further, by being connected with temperature control system to the heater outside boiler tube, make temperature control system according to reality
Shi Wendu is automatically adjusted heater power, is finally reached the dynamic equilibrium of temperature, and the work of plug flow reactor assembly is steady
After fixed, boiler tube actual temperature and temperature control system set temperature deviation are within ± 10 DEG C.
Further, by detecting flue for the optical detection feeler lever in the escaping of ammonia analyzer as ammonia density, in tubular type companion
Under conditions of hot stove heating, the method absorbed using infrared laser spectroscopy can accurately be determined in extracted simulated flue gas
Ammonia concentration.
Further, by the way that flue gas analyzer is arranged, thus to other gas ingredients in flue gas, such as nitric oxide, oxygen,
The concentration of the gases such as nitrogen is measured.
Further, by the way that sampling gun elevating mechanism, the position protruded into boiler tube for controlling sampling gun, to take out is arranged
Different tests residence time reaction mixture gas is taken to be tested.
Detailed description of the invention
Fig. 1 is SNCR denitration engineering test platform schematic diagram of the present invention.
Wherein: 1. match gas cylinder；2. measuring steam generator；3. mass flowmenter；4. mixed gas preheating chamber；5. mixed gas sample introduction
Rifle；6. ammonia sample injection gun；7. ammonia sample injection gun cooling water pipeline；8. mending ammonia sample injection gun；9. mending ammonia sample injection gun cooling water pipeline；
10. temperature control system；11. temperature-control heat couple；12. electric heater；13. boiler tube；14. insulating layer；15. sampling gun；16. sampling
Gun cooling water pipeline；17. sampling gun elevating mechanism；18. optical detection feeler lever；19. heat tracing tube furnace；20. aspiration pump；21. ammonia
Escape laser spectral analysis instrument；22. flue gas analyzer；23. blower.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
As shown in Figure 1, mainly including three parts: distribution gas handling system, plug flow reactor assembly and sampling and testing system.
Distribution gas handling system is by with gas cylinder 1, metering steam generator 2, mass flowmenter 3, mixed air preheater 4, mixed gas
Sample injection gun 5, ammonia sample injection gun cooling water pipeline 7, mends ammonia sample injection gun 8, mends 9 groups of ammonia sample injection gun cooling water pipeline ammonia sample injection gun 6
At；It is wherein two groups of gas bombs with gas cylinder 1, first group includes nitrogen cylinder, oxygen cylinder, dioxide bottle and nitric oxide gas
Bottle, second group includes nitrogen cylinder and ammonia bottle；Nitrogen cylinder, oxygen cylinder, dioxide bottle and nitric oxide gas cylinder pass through decompression
After valve release, first assembles the experimental condition as needed of gas cylinder 1 is sequentially connected pressure reducing valve and mass flow from gas outlet respectively
Meter 3 controls flow by mass flowmenter 3, then steam generator 2 and is connected in mixed 4 entrance of air preheater with metering；Water is measured to steam
After vapour generator 2 quantitatively generates water vapour, by being passed through mixed air preheater 4 with the pipeline that electric tracing heats；In mixed air preheater 4
It is uniformly mixed, the gas after heat temperature raising, as simulated flue gas, exports and export from mixed air preheater 4, led to by mixed gas sample injection gun 5
Enter the constant temperature zone upper position of boiler tube 13 in plug flow reactor assembly；Second assembles 1 gas outlet of gas cylinder and is sequentially connected respectively and subtract
Pressure valve and mass flowmenter 3, ammonia under nitrogen carrying, are divided into two-way after the metering of mass flowmenter 3, a routing ammonia into
Sample rifle 6 is passed through the constant temperature zone starting position of boiler tube 13 in plug flow reactor assembly, and another way gas is according to test needs, by mending
Ammonia sample injection gun 8 protrudes into boiler tube different location, sprays into boiler tube, influence of the test substep spray ammonia to denitration efficiency；To prevent ammonia
It decomposes at high temperature, ammonia sample injection gun cooling water pipeline 7 is provided on ammonia sample injection gun 6, mend and be provided on ammonia sample injection gun 8
Mend ammonia sample injection gun cooling water pipeline 9；Ammonia sample injection gun 6 is identical with 8 basic structure of ammonia sample injection gun is mended, and internal layer is fine quartz glass
Pipe can reduce ammonia in the absorption of tube wall, and outer layer is the water cold sleeve of 316L stainless steel tube material.
Plug flow reactor assembly is by temperature control system 10, temperature-control heat couple 11, electric heater 12, boiler tube 13 and heat preservation
Layer 14 forms；Mixed gas sample injection gun 5 and ammonia sample injection gun 6 are connected at the top of boiler tube 13, outside is provided with electric heater 12, boiler tube 13
Bottom is connected with for the blower 23 of pumping and the sampling gun 15 for extracting hybrid reaction gas in boiler tube 13, sets outside boiler tube 13
Be equipped with insulating layer 14, it is wrapped in electric heater 12 in, electric heater 12 is connected with temperature control by temperature-control heat couple 11
System 10 processed.
After experiment work temperature is arranged in temperature control system 10, electric heater 12 carries out heat temperature raising, control to boiler tube 13
Warm galvanic couple 11 is used to monitor the real time temperature of boiler tube 13 and feeds back temperature signal into temperature control system 10, when boiler tube temperature
After degree reaches set temperature, temperature control system 10 adjusts adding for electric heater 12 according to set temperature and actual temperature situation
Thermal power is finally reached the dynamic equilibrium of temperature；After plug flow reactor assembly the operation is stable, boiler tube center actual temperature and temperature
Control system set temperature deviation is spent within ± 10 DEG C.Electric heater 12 is Si-Mo rod electric heater；Temperature-control heat couple 11 is R
Type thermocouple (platinum-13rhodium-platinum thermocouple)；Boiler tube 13 is single alundum tube；Insulating layer 14 is polycrystalline alumina fiber cotton.
Sampling and testing system is visited by sampling gun 15, sampling gun cooling water pipeline 16, sampling gun elevating mechanism 17, optical detection
Bar 18, heat tracing tube furnace 19, aspiration pump 20, the escaping of ammonia laser spectral analysis instrument 21, flue gas analyzer 22 and blower 23 form；It takes
15 one end of sample rifle is arranged in 13 bottom of boiler tube, and the other end is passed through 18 one end of optical detection feeler lever heated by heat tracing tube furnace 19,
18 other end of optical detection feeler lever is connected separately with the escaping of ammonia laser spectral analysis instrument 21 and aspiration pump 20, and sampling gun 15 stretches out furnace
13 part of pipe is provided with sampling gun cooling water pipeline 16 and sampling gun elevating mechanism 17, is also connected with flue gas analyzer 22.Sampling
15 internal layer of rifle is quartz glass tube, and outer layer is water cold sleeve；Sampling gun elevating mechanism 17 is for controlling sampling gun 15 in boiler tube 13
In the position protruded into, extract different residence time reaction mixture gas and tested；It is to reduce and taken out that sampling gun, which leads to cooling water,
The temperature for answering mixed gas is negated, SNCR reaction is quenched.
The mixed gas in boiler tube 13 is passed through after SNCR reacts, 15 abstraction reaction gaseous mixture of sampling gun reduces gas temperature
Degree stops reaction.Sampled gun cooling water pipeline 16 cool down after gas extraction boiler tube after, two-way is divided by triple valve, one
It routes aspiration pump 20 to suck in optical detection feeler lever 18 (maintaining about 300 DEG C of temperature with heat tracing tube furnace 19), the escaping of ammonia laser light
Spectrum analysis instrument 21 issues monochromatic infrared laser by optical fiber and injects in optical detection feeler lever 18, and the ammonia in flue gas, which generates, absorbs light
Spectrum measures the concentration of ammonia in simulated flue gas after the escaping of ammonia laser spectral analysis instrument 21 receives absorption spectrum signal；Gas all the way
Body is passed through in flue gas analyzer 22, the gas component concentrations such as measurement nitrogen oxides, carbon dioxide, oxygen.It is passed through plug flow reaction
All hybrid reaction gas in device system are discharged into outside atmosphere by blower 23.
In the distribution gas handling system, plug flow reactor assembly and sampling and testing system, each gas piping material
It is all made of 316L stainless steel.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (10)
1. a kind of SNCR denitration engineering test platform, which is characterized in that including distribution gas handling system, plug flow reactor assembly and take
Sample test macro；
The plug flow reactor assembly includes boiler tube (13), and outside is provided with electric heater (12), the connection of boiler tube (13) bottom
There is the blower (23) for pumping；
The distribution gas handling system includes for two groups of gas bottles with gas cylinder (1), and first group includes nitrogen cylinder, oxygen cylinder, dioxy
Change carbon gas cylinder and nitric oxide gas cylinder, each gas bottle gas outlet is sequentially connected pressure reducing valve and mass flowmenter (3) respectively, then with meter
Amount steam generator (2) is simultaneously connected in mixed air preheater (4) entrance, mix air preheater (4) outlet by mixed gas sample injection gun (5) with
Boiler tube (13) connection, second group includes nitrogen cylinder and ammonia bottle, and the two gas outlet is sequentially connected pressure reducing valve and mass flow respectively
It counts (3), then is connect by ammonia sample injection gun (6) with boiler tube (13)；
The sampling and testing system is connect with boiler tube (13), for measuring the concentration of ammonia in flue gas gas after denitration.
2. a kind of SNCR denitration engineering test platform according to claim 1, which is characterized in that second assembles gas cylinder (1)
After port is sequentially connected pressure reducing valve and mass flowmenter (3) respectively, also it is connect by mending ammonia sample injection gun (8) with boiler tube (13).
3. a kind of SNCR denitration engineering test platform according to claim 2, which is characterized in that ammonia sample injection gun is set on (6)
It is equipped with ammonia sample injection gun cooling water pipeline (7), mends to be provided on ammonia sample injection gun (8) and mends ammonia sample injection gun cooling water pipeline (9).
4. a kind of SNCR denitration engineering test platform according to claim 3, which is characterized in that ammonia sample injection gun (6) and benefit
Ammonia sample injection gun (8) internal layer is fine quartz glass tube, and outer layer is water cold sleeve.
5. a kind of SNCR denitration engineering test platform according to claim 1, which is characterized in that be provided with outside boiler tube (13)
Insulating layer (14), it is wrapped in electric heater (12) in, electric heater (12) is connected with temperature by temperature-control heat couple (11)
It spends control system (10).
6. a kind of SNCR denitration engineering test platform according to claim 1, which is characterized in that the sampling and testing system packet
Include the sampling gun (15) for extracting the interior hybrid reaction gas of boiler tube (13), one end is connect with boiler tube (13), the other end be passed through by
Optical detection feeler lever (18) one end of heat tracing tube furnace (19) heating, optical detection feeler lever (18) other end, which is connected separately with ammonia, to be escaped
Escape laser spectral analysis instrument (21) and aspiration pump (20).
7. a kind of SNCR denitration engineering test platform according to claim 6, which is characterized in that sampling gun (15) stretches out boiler tube
(13) outer portion is connected with flue gas analyzer (22).
8. a kind of SNCR denitration engineering test platform according to claim 6, which is characterized in that stretch out furnace in sampling gun (15)
Pipe (13) outer portion is provided with sampling gun elevating mechanism (17).
9. a kind of SNCR denitration engineering test platform according to claim 6, which is characterized in that sampling gun (15) stretches out boiler tube
(13) outer portion is provided with sampling gun cooling water pipeline (16).
10. a kind of SNCR denitration engineering test platform described in -9 any one according to claim 1, which is characterized in that described to match
Gas gas handling system, in plug flow reactor assembly and sampling and testing system, each gas piping material is all made of 316L stainless steel.
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| CN201810917159.8A CN109060704A (en) | 2018-08-13 | 2018-08-13 | A kind of SNCR denitration engineering test platform |
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| CN201810917159.8A CN109060704A (en) | 2018-08-13 | 2018-08-13 | A kind of SNCR denitration engineering test platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782158A (en) * | 2020-12-28 | 2021-05-11 | 杭州电子科技大学 | Monitoring system for crude copper desulfurization |
| CN113358511A (en) * | 2021-05-14 | 2021-09-07 | 华电电力科学研究院有限公司 | Experimental device and method for abrasion resistance of denitration catalyst to dust-containing flue gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913548A (en) * | 2014-04-08 | 2014-07-09 | 北京航空航天大学 | Experimental device and method for researching selective non-catalytic reducing property in new dry process cement decomposing furnace |
| WO2018025315A1 (en) * | 2016-08-01 | 2018-02-08 | 株式会社エコ・サポート | Evaluation testing apparatus and evaluation testing system |
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| WO2018025315A1 (en) * | 2016-08-01 | 2018-02-08 | 株式会社エコ・サポート | Evaluation testing apparatus and evaluation testing system |
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| CN112782158A (en) * | 2020-12-28 | 2021-05-11 | 杭州电子科技大学 | Monitoring system for crude copper desulfurization |
| CN112782158B (en) * | 2020-12-28 | 2023-09-08 | 杭州电子科技大学 | Monitoring system for blister copper desulfurization |
| CN113358511A (en) * | 2021-05-14 | 2021-09-07 | 华电电力科学研究院有限公司 | Experimental device and method for abrasion resistance of denitration catalyst to dust-containing flue gas |
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Application publication date: 20181221 |