CN106932526A - Process and device for detecting low-temperature performance of denitration catalyst - Google Patents
Process and device for detecting low-temperature performance of denitration catalyst Download PDFInfo
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- CN106932526A CN106932526A CN201710235441.3A CN201710235441A CN106932526A CN 106932526 A CN106932526 A CN 106932526A CN 201710235441 A CN201710235441 A CN 201710235441A CN 106932526 A CN106932526 A CN 106932526A
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- catalyst
- gas
- generator
- cryogenic property
- denitrating catalyst
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- 239000003054 catalyst Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 29
- 239000003546 flue gas Substances 0.000 claims abstract description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 11
- 238000012512 characterization method Methods 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 238000006555 catalytic reaction Methods 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to a process and a device for detecting the low-temperature performance of a denitration catalyst, wherein the process comprises the following steps: to generate a gas containing at least SO2The simulated flue gas is subjected to catalytic oxidation to generate SO3SO as to contain SO3The simulated flue gas passes through the modified denitration catalyst to obtain various technological properties of the denitration catalyst. The apparatus comprises SO3Generating system, catalyst performance detecting reactor, SO3The generating system comprises a gas distribution system and an SO3Generator, SO3The generator includes a generator housing, a first catalyst cartridge disposed within the generator housing, and a first temperature control system that regulates temperature within the generator housing. The invention carries out experiments by a multistage series connection process and structure, and SO3SO produced by the generating system3Continuous stabilization of gas, SO2/SO3The conversion rate reaches 0 to 10 percent, and SO is prepared3The gas concentration is 0-100 ppm; structure of the productSimple, safe and reliable.
Description
Technical field
It is used for denitrating catalyst cryogenic property characterization processes and device the present invention relates to one kind.
Background technology
At present, when commercially being run below minimum continuous spray ammonia temperature with vanadium titanium system's denitrating catalyst, in easily there is flue gas
SO3With H2O、NH3Effect, generation ammonium hydrogen sulfate is condensed in the capillary micropore of catalyst and causes catalyst to inactivate.Due to SO3
Gas stability at normal temperatures is poor, and it is prepared and storage difficulty is big, the concentrated sulfuric acid heating and gasifying system that current experiment research and development are used
Standby SO3Method have that security is poor, the supply deficiency such as unstable gas.Therefore, conventional denitrating catalyst device for detecting performance
Simulation gas in be not configured with special SO3Generator, so as to be difficult to provide the SO of suitable concn3Gas, causes simulation real
Test and had differences with actual flue gas with simulated flue gas, be not easy to the evaluation of performance under catalyst low temperature.
The content of the invention
It is used for denitrating catalyst cryogenic property characterization processes it is an object of the present invention to provide one kind.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
One kind is used for denitrating catalyst cryogenic property characterization processes, includes successively：
（1）, generation comprise at least SO2Simulated flue gas,
（2）, simulated flue gas are carried out with catalysis oxidation generation comprising SO3Simulated flue gas,
（3）, make comprising SO3Simulated flue gas by denitrating catalyst, obtain denitration efficiency, the escaping of ammonia, the work of denitrating catalyst
Property and SO2/SO3One or more in conversion ratio.
Preferably, exist（2）In, the catalyst hole count for using is 15-70 holes, and its length is 300-1500mm.
Preferably, exist（2）In, the reaction temperature of catalysis oxidation is 300-450 DEG C.
Preferably, exist（2）In, the catalyst for using is cellular catalyst, and activity substance content is 1.0%-5%.
Preferably, exist（1）In, simulated flue gas also include N2、O2And water vapour.
It is used for denitrating catalyst low-temperature performance detection device it is a further object to provide one kind.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of device for the detection of denitrating catalyst cryogenic property, including SO3Generation system and described SO3Generation system
The catalyst performance detection reactor being connected, described SO3Generation system includes air distribution system and described air distribution system phase
The SO of connection3Generator, described SO3Generator is connected with described catalyst performance detection reactor, described SO3Hair
Raw device includes generator body, the first catalyst box being arranged in described generator body and to described generator shell
The first temperature control system of temperature adjustment is carried out in vivo.
Preferably, the first described temperature control system includes being arranged on the first companion outside described generator body
Heat/heat-insulation layer.
Preferably, the hole for taking, putting sample is offered on described generator body.
Preferably, described air distribution system includes connection SO2The SO of source of the gas2Delivery pipe, connection N2The N of source of the gas2Delivery pipe,
Connection O2The O of source of the gas2Delivery pipe, the steam pipeline of connection steam source of the gas and flow control system.
Preferably, described air distribution system and described SO3Gas mixer is provided between generator.
Preferably, described catalyst performance detection reactor includes reactor shell, is arranged on described reactor enclosure
The second internal catalyst box and the second temperature control system to carrying out temperature adjustment in described reactor enclosure body.
It is further preferred that described second temperature control system includes being arranged on the of described reactor enclosure external body
Two heat tracings/heat-insulation layer.
It is further preferred that offering the hole for picking and placeing sample in described reactor shell.
Preferably, described experimental provision also includes being detected at the waste gas that reactor is connected with described catalyst performance
Reason system.
Because above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art：
The present invention is tested by the technique and structure of plural serial stage, SO3SO prepared by generation system3Gas is continuously steady
It is fixed, SO2/SO3Conversion ratio reaches 0-10%, and SO is obtained3Gas concentration 0-100ppm；Additionally, apparatus structure is simple, it is safe and reliable.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present embodiment；
Accompanying drawing 2 is SO in the present embodiment3Generator/catalyst performance detects the schematic diagram of reactor.
Wherein：10、SO2Delivery pipe；11、N2Delivery pipe；12、O2Delivery pipe；13rd, steam pipeline；14th, generator body；
140th, hole；15th, the first catalyst box；16th, the first heat tracing/heat-insulation layer；17th, gas mixer；20th, reactor shell；200th, hole；
21st, the second catalyst box；22nd, the second heat tracing/heat-insulation layer；3rd, exhaust treatment system.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
A kind of experimental provision for the detection of denitrating catalyst cryogenic property as shown in Figure 1, including SO3Generation system and SO3
Catalyst performance detection reactor and detected at the waste gas that reactor is connected with catalyst performance that generation system is connected
Reason system 3, three Major Systems are sequentially connected in series.The structure of lower Major Systems is illustrated in detail below：
SO3Generation system mainly includes the SO that air distribution system is connected with air distribution system3Generator, SO3Generator and catalyst
Performance detection reactor 3 is connected.Wherein：
Air distribution system includes connection SO2The SO of source of the gas2Delivery pipe 10, connection N2The N of source of the gas2Delivery pipe 11, connection O2The O of source of the gas2
Delivery pipe 12, the steam pipeline 13 of connection steam source of the gas and flow control system.
As shown in Figure 2：SO3Generator includes generator body 14, the first catalyst being arranged in generator body 14
Box 15 and the first temperature control system to carrying out temperature adjustment in generator body 14.Wherein：The size of generator body 14
Can be selected as needed, with suitable for different types（Lab scale or pilot scale）Catalyst performance detection reactor；Occurring
On device housing 14 by the way of lateral opening hole 140, facilitate setting-out, sampling and cover plate for sealing.First catalyst box 15 is using mark
Quasi- structure, for placing to SO2Carry out the catalyst of catalysis oxidation.First temperature control system includes being arranged on generator body
The first heat tracing/heat-insulation layer 16 outside 14.
Additionally, preferably mix for the ease of gas, air distribution system and SO3Gas mixer is provided between generator
17。
Catalyst performance detection reactor can use SO3Generator identical structure, including reactor shell 20, setting
The second catalyst box 21 in reactor shell 20 and the second temperature control to carrying out temperature adjustment in reactor shell 20
System processed.Wherein：The pattern of reactor shell 20（Lab scale, Chinese style）Need, corresponding size is designed, in reactor shell 20
Setting-out, sampling and cover plate for sealing can be facilitated by the way of lateral opening hole 200.Treated for placement in second catalyst box 21
The denitrating catalyst sample of detection.Second temperature control system includes being arranged on the second heat tracing/guarantor outside reactor shell 20
Warm layer 22.
The lower technique using the present embodiment experimental provision is illustrated in detail below：
First, according to the different length of standard catalyst sample, specification（Pitch, wall thickness etc.）, it is activity substance content in composition, anti-
Temperature is answered to SO3The influence of generation, carries out classifying and numbering, according to the SO that downstream catalyst performance detection reactor needs3Concentration exists
The standard catalyst sample of reference numeral is placed in first catalyst box 15, in order to prepare the SO of respective concentration3Gas, can be with
Reduce the workload of demarcation and Adjustment Tests in day-to-day operation.In general：The cross section of standard catalyst sample is fixed, long
Degree, specification can adjust, and standard catalyst sample is modified routine business denitrating catalyst, such as honeycomb fashion/board-like catalyst,
Activity substance content is 1.0%-5%, and its hole count is 15-70 holes；Its length is 300-1500mm, can be by increasing standard catalyst
Agent sample hole count, length, activity substance content and raising reaction temperature, improve SO2/SO3Conversion ratio；In the second catalyst box 21
It is interior to place denitrating catalyst sample to be detected；
Secondly, simulated flue gas are generated by air distribution system, wherein：SO is mainly included in simulated flue gas2、N2、O2And water vapour,
The simulated flue gas of air distribution system are passed through SO after gas mixer 17 mixes3Generator, standard catalyst sample is to SO2Carry out
Catalysis oxidation generation includes SO3Simulated flue gas, its reaction temperature control at 300-450 DEG C,
Again, make comprising SO3Simulated flue gas enter catalyst performance and detect reactor, by denitrating catalyst, obtain denitration
The denitration efficiency of catalyst, the escaping of ammonia, activity and SO2/SO3Conversion ratio etc..
Finally, reacted flue gas after exhaust treatment system 3 by being discharged.
Introduce in detail below lower using different standard catalysts, SO3Generation prepare conversion situation：
Embodiment one：
The hole of standard catalyst sample specification 18, length 500mm, activity substance content 1.0%, 360 DEG C of reaction temperature, SO3Generator
Outlet SO3Concentration 5ppm.
Embodiment two：
The hole of standard catalyst sample specification 20, length 800mm, activity substance content 2.0%, 380 DEG C of reaction temperature, SO3Generator
Outlet SO3Concentration 20ppm.
Embodiment three：
The hole of standard catalyst sample specification 22, length 1200mm, activity substance content 3.5%, 400 DEG C of reaction temperature, SO3Occur
Device exports SO3Concentration 60ppm.
The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (10)
- It is 1. a kind of to be used for denitrating catalyst cryogenic property characterization processes, it is characterised in that：Include successively：（1）, generation comprise at least SO2Simulated flue gas,（2）, simulated flue gas are carried out with catalysis oxidation generation comprising SO3Simulated flue gas,（3）, make comprising SO3Simulated flue gas by denitrating catalyst, obtain denitration efficiency, the escaping of ammonia, the activity of denitrating catalyst And SO2/SO3One or more in conversion ratio.
- 2. according to claim 1 a kind of for denitrating catalyst cryogenic property characterization processes, it is characterised in that：（2） In, the catalyst hole count for using is 15-70 holes, and its length is 300-1500mm.
- 3. according to claim 1 a kind of for denitrating catalyst cryogenic property characterization processes, it is characterised in that：（2） In, the reaction temperature of catalysis oxidation is 300-450 DEG C.
- 4. according to claim 1 a kind of for denitrating catalyst cryogenic property characterization processes, it is characterised in that：（2） In, the catalyst for using is cellular catalyst, and activity substance content is 1%-5%.
- 5. according to claim 1 a kind of for denitrating catalyst cryogenic property characterization processes, it is characterised in that：（1） In, simulated flue gas also include N2、O2And water vapour.
- 6. it is a kind of for denitrating catalyst cryogenic property detection device, it is characterised in that：Including SO3Generation system and described SO3The catalyst performance detection reactor that generation system is connected, described SO3Generation system includes air distribution system and described The SO that air distribution system is connected3Generator, described SO3Generator is connected with described catalyst performance detection reactor, institute The SO for stating3Generator includes generator body, the first catalyst box being arranged in described generator body and to described Generator body in carry out the first temperature control system of temperature adjustment.
- 7. it is according to claim 6 it is a kind of for denitrating catalyst cryogenic property detection device, it is characterised in that：It is described Air distribution system include connection SO2The SO of source of the gas2Delivery pipe, connection N2The N of source of the gas2Delivery pipe, connection O2The O of source of the gas2Delivery pipe, Connect the steam pipeline and flow control system of steam source of the gas.
- 8. it is according to claim 6 it is a kind of for denitrating catalyst cryogenic property detection device, it is characterised in that：It is described Air distribution system and described SO3Gas mixer is provided between generator.
- 9. it is according to claim 6 it is a kind of for denitrating catalyst cryogenic property detection device, it is characterised in that：It is described Catalyst performance detection reactor include reactor shell, the second catalyst box being arranged in described reactor enclosure body with And to carrying out the second temperature control system of temperature adjustment in described reactor enclosure body.
- 10. it is according to claim 6 it is a kind of for denitrating catalyst cryogenic property detection device, it is characterised in that：Institute The device stated also includes the exhaust treatment system being connected with described catalyst performance detection reactor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710235441.3A CN106932526A (en) | 2017-04-12 | 2017-04-12 | Process and device for detecting low-temperature performance of denitration catalyst |
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| CN201710235441.3A CN106932526A (en) | 2017-04-12 | 2017-04-12 | Process and device for detecting low-temperature performance of denitration catalyst |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113353894A (en) * | 2021-06-03 | 2021-09-07 | 清华大学 | Synchronous preparation and quantitative measurement SO3System and method thereof |
| CN117815856A (en) * | 2024-01-05 | 2024-04-05 | 凯佛瑞(上海)化工有限公司 | Desulfurization and denitrification filter and application method thereof |
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| 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 |
| CN113353894A (en) * | 2021-06-03 | 2021-09-07 | 清华大学 | Synchronous preparation and quantitative measurement SO3System and method thereof |
| CN113353894B (en) * | 2021-06-03 | 2022-07-01 | 清华大学 | Synchronous preparation and quantitative measurement SO3System and method thereof |
| CN117815856A (en) * | 2024-01-05 | 2024-04-05 | 凯佛瑞(上海)化工有限公司 | Desulfurization and denitrification filter and application method thereof |
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Application publication date: 20170707 |