CN111044667A - Method for evaluating activity of denitration system catalyst and method for correcting denitration efficiency - Google Patents

Method for evaluating activity of denitration system catalyst and method for correcting denitration efficiency Download PDF

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CN111044667A
CN111044667A CN201911260119.1A CN201911260119A CN111044667A CN 111044667 A CN111044667 A CN 111044667A CN 201911260119 A CN201911260119 A CN 201911260119A CN 111044667 A CN111044667 A CN 111044667A
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姬亚
王磊
秦淇
蓝晓村
程金武
安敬学
王礼鹏
邢振中
罗雪娇
逯朝锋
杨泽生
绳冉冉
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China Datang Corp Science and Technology Research Institute Co Ltd
Zhongnan Electric Power Test and Research Institute of China Datang Group Science and Technology Research Institute Co Ltd
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Abstract

The invention relates to an evaluation method of the activity of a catalyst of a denitration system and a correction method of denitration efficiency. The evaluation method comprises the following steps: 1) obtaining NO in inlet flue gas of denitration systemxThe converted concentration and the oxygen content of the denitration system, the escape concentration of ammonia in the outlet flue gas of the denitration system and NO in the outlet clean flue gasxThe reduced concentration of (c); 2) calculating denitration correction efficiency according to a formula; 3) and (4) monitoring the change trend of the denitration correction efficiency on line, and if the denitration correction efficiency moves downwards, indicating that the activity of the catalyst is reduced. The method for evaluating the catalyst activity provided by the invention is mainly used for carrying out online evaluation on the catalyst activity based on the correction of the denitration efficiency, and is less influenced by the ammonia/nitrogen molar ratio when ammonia is excessively sprayed, so that the actual activity of the catalyst can be reflected more stably and accurately.

Description

Method for evaluating activity of denitration system catalyst and method for correcting denitration efficiency
Technical Field
The invention belongs to the field of evaluation of catalyst activity, and particularly relates to an evaluation method of catalyst activity of a denitration system and a correction method of denitration efficiency.
Background
Selective Catalytic Reduction (SCR) is the mainstream technology for flue gas denitration of thermal power plants at present, and reducing agent (NH) is utilized3Urea, ammonia water, etc.) under the action of catalyst and selectively reacting with NO in flue gasxReacting to generate nitrogen and water.
The denitration catalyst is the core of the flue gas SCR denitration system of the thermal power plant. The activity of the catalyst not only determines the operation condition of a denitration facility, but also has great influence on the operation cost of a denitration system, and at present, the detection of the activity of the catalyst is mainly realized by sampling a catalyst sample block from a reactor when a unit is stopped for maintenance and then performing a catalyst activity experiment in a laboratory. The reaction conditions detected in a laboratory are obviously different from the actual working conditions on site, and the detection result is difficult to truly reflect the activity of the catalyst under the conditions on site. The method has the advantages that the catalyst activity is monitored on line through reasonable and reliable technical means, and the reasonable operation suggestion is given according to the result, so that the method has important significance on the stable, reliable and economic operation of the SCR denitration system.
Chinese patent publication No. CN103499671B discloses a method for on-site testing of denitration catalyst activity of SCR system in thermal power plant, which is to obtain on-site evaluation parameters of catalyst activity by testing average denitration efficiency and determining activity constant. The evaluation method needs more detection parameters and has a more complex evaluation process.
Disclosure of Invention
The invention aims to provide an evaluation method of the activity of a denitration system catalyst, which aims to solve the problem that the evaluation process of the existing method is complex.
The second purpose of the invention is to provide a method for correcting denitration efficiency of a denitration system.
In order to achieve the purpose, the technical scheme of the method for evaluating the activity of the denitration system catalyst is as follows:
a method for evaluating the activity of a denitration system catalyst comprises the following steps:
1) obtaining NO in inlet flue gas of SCR reactorxReduced concentration (reduced to standard state, dry basis, 6% oxygen content, the same applies below), oxygen content, and ammonia slip concentration at the outlet of the SCR reactor, NO in the outlet clean flue gasxReduced concentration (reduced to standard state, dry basis, 6% oxygen content, the same applies below);
2) substituting the data obtained in the step 1) into the formulas (1) to (3) to calculate the denitration correction efficiency:
Figure BDA0002311380560000021
Figure BDA0002311380560000022
Figure BDA0002311380560000023
in formulae (1) to (3), ηRepair theThe denitration correction efficiency is percent, which reflects the state of the catalyst, and η is the denitration efficiency is percent;
Figure BDA0002311380560000024
ammonia slip concentration, ppm; cNOIs the concentration of NO in the inlet flue gas, ppm;
Figure BDA0002311380560000025
for NO in inlet flue gasxReduced concentration of (d), mg/Nm3
Figure BDA0002311380560000026
For discharging NO in clean flue gasxReduced concentration of (d), mg/Nm3;O2Is the oxygen content of the inlet flue gas,%;
3) and (4) monitoring the change trend of the denitration correction efficiency on line, and if the denitration correction efficiency moves downwards, indicating that the activity of the catalyst is reduced.
The traditional denitration efficiency calculation formula does not take the influence of ammonia escape concentration into account, and still has higher efficiency when the ammonia injection excess ammonia escape concentration seriously exceeds the standard, and the catalyst activity is difficult to reflect faithfully only by monitoring the ammonia injection excess ammonia escape concentration. The method for evaluating the catalyst activity provided by the invention is mainly used for carrying out online evaluation on the catalyst activity based on the correction of the denitration efficiency, and is less influenced by the ammonia/nitrogen molar ratio when ammonia is excessively sprayed, so that the actual activity of the catalyst can be reflected more stably and accurately.
NO at SCR reactor outlet (denitration outlet)xThe CEMS (flue gas on-line monitoring system) measuring point is often influenced by a flue gas flow field, an operation load, a coal mill combination mode and the like to cause the problem of poor representativeness (the average NO of a flue is difficult to reflect)xConcentration), if the denitration efficiency calculated by using the method is easy to be distorted, in order to improve the calculation accuracy of the denitration efficiency, the NO in the clean flue gas at the outlet of the desulfurization system is preferably usedxHas a reduced concentration of
Figure BDA0002311380560000027
With NO at the desulfurization outletxFor the basis of calculation, the flue gas has been mixed by further mixing of denitration downstream equipment and stirring of a draught fan, the measurement point representativeness is stronger, and therefore the real denitration efficiency can be reflected more accurately.
Generally, each coal-fired power generating unit has two SCR reactors, which are conventionally called A side and B side in the industry, in order to more accurately obtain the test data of the corresponding parameters, preferably, the denitration system comprises an A side SCR reactor and a B side SCR reactor, η,
Figure BDA0002311380560000028
CNO
Figure BDA0002311380560000029
O2The average of the data for the A-side SCR reactor and the B-side SCR reactor.
In order to better warn the activity condition of the catalyst, preferably, the method is carried out according to NO in the smoke at the SCR inletxLong-term average data of converted concentration, SCR outlet flue gas NOxAnd substituting the design value of the converted concentration and the early warning value of the ammonia escape concentration into the formulas (1) to (3) to calculate the early warning value of the denitration correction efficiency. Under the condition that the activity of the catalyst is normal, the denitration correction efficiency is maintained to be higher than an early warning value along with NO at the denitration inlet and the desulfurization outletxThe converted concentration fluctuates due to fluctuation, and once the converted concentration is reduced to an early warning value, the maintenance, activity test and other work of the catalyst need to be considered. Considering the aspects of efficient and economic operation of the SCR system, the early warning value of the ammonia escape concentration needs to be determined according to the coal quality characteristics for combustion, the increase speed of the differential pressure on the smoke side of the air preheater and other factors, and can be set to be 3-10 ppm if the early warning value is determined.
The technical scheme of the method for correcting the denitration efficiency of the denitration system is as follows:
a method for correcting denitration efficiency of a denitration system comprises the following steps:
1) obtaining NO in inlet flue gas of SCR reactorxReduced concentration and oxygen content of the SCR, ammonia escape concentration at the outlet of the SCR reactor and clean flue gas at the outletNOxThe reduced concentration of (c);
2) substituting the data obtained in the step 1) into the formulas (1) to (3) to calculate the denitration correction efficiency:
Figure BDA0002311380560000031
Figure BDA0002311380560000032
Figure BDA0002311380560000033
in formulae (1) to (3), ηRepair theThe denitration correction efficiency is percent, which reflects the state of the catalyst, and η is the denitration efficiency is percent;
Figure BDA0002311380560000034
ammonia slip concentration, ppm; cNOIs the concentration of NO in the inlet flue gas, ppm;
Figure BDA0002311380560000035
for NO in inlet flue gasxReduced concentration of (d), mg/Nm3
Figure BDA0002311380560000036
For discharging NO in clean flue gasxReduced concentration of (d), mg/Nm3;O2Is the oxygen content of the inlet flue gas,%.
According to the method for correcting the denitration efficiency of the denitration system, the denitration efficiency under the conditions of excessive ammonia injection amount and over-standard ammonia escape rate is corrected by counting the ammonia escape concentration, the influence of the ammonia/nitrogen molar ratio is small, and the actual activity of the catalyst can be reflected more stably and accurately.
For increasing NO in outlet clean flue gasxThe accuracy of the calculation of the reduced concentration is preferably determined by the NO content in the clean flue gas at the outlet of the desulfurization systemxHas a reduced concentration of
Figure BDA0002311380560000037
In order to more accurately obtain the test data of the corresponding parameters, it is preferable that the denitration system includes an A-side SCR reactor and a B-side SCR reactor, η,
Figure BDA0002311380560000038
CNO
Figure BDA0002311380560000039
O2The average of the data for the A-side SCR reactor and the B-side SCR reactor.
Detailed Description
The activity of the catalyst is evaluated mainly by correcting the actual denitration efficiency of the SCR system, corresponding measured point data are all actual working condition data, and the method offsets the influence degree of the denitration efficiency under the ammonia/nitrogen molar ratio when the ammonia injection is excessive as much as possible by taking the influence of the ammonia escape rate into account, so that the corrected denitration efficiency can more accurately reflect the current actual activity of the catalyst, and the denitration correction efficiency trend is continuously evaluated on line and early-warning is carried out, thereby being beneficial to reasonably arranging SCR maintenance work.
The calculation formula of the original denitration efficiency is as follows:
Figure BDA0002311380560000041
Figure BDA0002311380560000042
NO in SCR reactor inlet flue gasxReduced concentration, mg/Nm3
Figure BDA0002311380560000043
NO in the SCR reactor outlet flue gasxReduced concentration, mg/Nm3
In the SCR operation, the denitration efficiency is increased along with the gradual increase of the molar ratio of ammonia to nitrogen, and the ammonia slip rate is obviously increased after the reaction capacity of the catalyst is exceeded. Generally, the denitration efficiency should be evaluated under the premise that the ammonia slip rate does not exceed 3ppm, and the denitration efficiency at this time can reflect the actual state and the reaction capability of the catalyst. And under the conditions that the ammonia injection amount is too large and the ammonia escape rate exceeds the standard, the SCR can obtain higher denitration efficiency, but the denitration efficiency is distorted at the moment and cannot reflect the actual state of the catalyst.
The corrected denitration efficiency is influenced by the ammonia escape rate, and can be relatively less influenced by the ammonia/nitrogen molar ratio when the ammonia injection is excessive, so that the actual activity of the catalyst can be more stably and accurately reflected.
The following examples are provided to further illustrate the practice of the invention.
In the following examples, NOxThe conversion concentration calculation formula is as follows:
Figure BDA0002311380560000044
in the formula (4), the reaction mixture is,
Figure BDA0002311380560000045
is NO in flue gasxReduced concentration (reduced to standard state, dry basis, 6% oxygen content), mg/Nm3;C’NOThe concentration of NO in the dry flue gas is actually measured, ppm; o's'2Is the oxygen content of the flue gas,%.
The specific embodiment of the method for evaluating the activity of the catalyst of the denitration system comprises the following steps of:
1) obtaining inlet flue gas NO of SCR (selective catalytic reduction) reactors at side A and side B according to a Distributed Control System (DCS) of a power plantxReduced concentration, mg/Nm3(ii) a Oxygen content, (volume)%; the ammonia escape concentration of the SCR reactor outlets of the side A and the side B is ppm; clean flue gas NO at outlet of desulfurization systemxReduced concentration, mg/Nm3
2) Displaying a calculation result of calculating the denitration correction efficiency on the DCS by using the data acquired in the step 1), wherein the denitration correction efficiency is calculated according to the formula (1) to the formula (5):
Figure BDA0002311380560000046
Figure BDA0002311380560000051
Figure BDA0002311380560000052
Figure BDA0002311380560000053
Figure BDA0002311380560000054
ηrepair theCorrecting the efficiency,%, for denitration, reflecting the state of the catalyst;
η is the average denitration efficiency of the SCR reactor at the A side and the B side in percent;
Figure BDA0002311380560000058
the average ammonia escape concentration of the SCR reactor at the side A and the side B is ppm;
CNOaverage NO concentration of inlets of SCR reactors at the side A and the side B is ppm;
Figure BDA0002311380560000055
average NO at the inlet of the A-side and B-side SCR reactorsxReduced concentration, mg/Nm3
Figure BDA0002311380560000056
For the clean flue gas NO of the desulfurization outletxReduced concentration, mg/Nm3
O2Average oxygen content at inlets of SCR reactors at the side A and the side B,%;
Figure BDA0002311380560000057
respectively an A side SCR reactor and a B side SCR reactorKouNOxReduced concentration, mg/Nm3
O2,A、O2,BThe oxygen content at the inlet of the SCR reactor at the side A and the inlet of the SCR reactor at the side B are respectively percent.
The ammonia escape concentration at the outlets of the SCR reactors at the side A and the side B, and the NO at the inlets of the SCR reactors at the side A and the side BxWhen the number of DCS on-line measuring points such as the converted concentration, the oxygen content of inlets of the SCR reactors at the side A and the side B is more than 1, the average value of all the measuring points is taken in the calculation so as to improve the representativeness of the measuring points and the accuracy of the calculation of the denitration correction efficiency.
3) Denitration inlet flue gas NO of generator setxLong term average data of reduced concentration (e.g. monthly average data, actually 450mg/Nm3) And denitration outlet flue gas NOxDesign value of reduced concentration (e.g., 45 mg/Nm)3) And substituting the early warning value (such as 8ppm) of the ammonia escape concentration into the formulas (1) to (3) to calculate the early warning value of the denitration correction efficiency, continuously evaluating the denitration correction efficiency on line, and if the denitration correction efficiency is reduced to the early warning value, sending out a catalyst maintenance early warning.
It is easily understood that the method for evaluating the activity of the catalyst of the denitration system of the present invention is applicable to a case where the following two conditions are simultaneously satisfied: (1) NO in inlet flue gasxThe reduced concentration of (a) reaches or exceeds a long-term average value; (2) the evaporation capacity of the boiler reaches the rated load. Taking the above embodiment as an example, the inlet flue gas NO of the denitration systemxThe long-term average of the converted concentration was 450mg/Nm3. When the evaporation capacity of the boiler is close to or reaches the rated load: NO in inlet flue gasxThe reduced concentration is 600mg/Nm3On the other hand, the method can be used for evaluating the activity of the catalyst simply and effectively; such as an inlet concentration (e.g., 300mg/Nm in some cases)3) If the average value is lower than the long-term average value, the SCR reactor is indicated to operate under the standard load, the actual denitration efficiency obtained through calculation under the condition may be lower, but the processing capacity of the catalyst is still surplus under the condition, and the activity of the catalyst can be evaluated by referring to whether the ammonia escape concentration exceeds the early warning value or not. In a word, when the two conditions cannot be met simultaneously, the denitration correction efficiency can not be monitored on line for the moment, and the monitoring is continued when the next boiler operation condition is met.
The specific embodiment of the method for correcting the denitration efficiency of the denitration system of the present invention is the same as the step 1) and the step 2) in the above evaluation method, and will not be described in detail.

Claims (7)

1. A method for evaluating the activity of a denitration system catalyst is characterized by comprising the following steps:
1) obtaining NO in inlet flue gas of SCR reactorxReduced concentration and oxygen content of the SCR, ammonia escape concentration at the outlet of the SCR reactor and NO in clean flue gas at the outletxThe reduced concentration of (c);
2) substituting the data obtained in the step 1) into the formulas (1) to (3) to calculate the denitration correction efficiency:
Figure FDA0002311380550000011
Figure FDA0002311380550000012
Figure FDA0002311380550000013
in formulae (1) to (3), ηRepair theThe denitration correction efficiency is percent, which reflects the state of the catalyst, and η is the denitration efficiency is percent;
Figure FDA0002311380550000014
ammonia slip concentration, ppm; cNOIs the concentration of NO in the inlet flue gas, ppm;
Figure FDA0002311380550000015
for NO in inlet flue gasxReduced concentration of (d), mg/Nm3
Figure FDA0002311380550000016
For discharging NO in clean flue gasxReduced concentration of (d), mg/Nm3;O2To enterOxygen content of oral fumes,%;
3) and (4) monitoring the change trend of the denitration correction efficiency on line, and if the denitration correction efficiency moves downwards, indicating that the activity of the catalyst is reduced.
2. The method of evaluating the activity of a denitration system catalyst according to claim 1, wherein NO in a clean flue gas discharged from a denitration system is used as a measurexHas a reduced concentration of
Figure FDA0002311380550000017
3. The method of evaluating the activity of a denitration system catalyst according to claim 1, wherein the denitration system comprises an A-side SCR reactor and a B-side SCR reactor, η,
Figure FDA0002311380550000018
CNO
Figure FDA0002311380550000019
O2The average of the data for the A-side SCR reactor and the B-side SCR reactor.
4. The method of evaluating the activity of a denitration system catalyst according to any one of claims 1 to 3, wherein the method is based on NO in the inlet flue gasxLong-term average data of converted concentration, NO in outlet flue gasxSubstituting the design value of the converted concentration and the early warning value of the ammonia escape concentration into the formulas (1) to (3) to calculate the early warning value of the denitration correction efficiency, and if the denitration correction efficiency is reduced to the early warning value, sending out a catalyst maintenance early warning.
5. A method for correcting denitration efficiency of a denitration system is characterized by comprising the following steps:
1) obtaining NO in inlet flue gas of SCR reactorxReduced concentration and oxygen content of the SCR, ammonia escape concentration at the outlet of the SCR reactor and NO in clean flue gas at the outletxIs converted to denseDegree;
2) substituting the data obtained in the step 1) into the formulas (1) to (3) to calculate the denitration correction efficiency:
Figure FDA0002311380550000021
Figure FDA0002311380550000022
Figure FDA0002311380550000023
in formulae (1) to (3), ηRepair theThe denitration correction efficiency is percent, which reflects the state of the catalyst, and η is the denitration efficiency is percent;
Figure FDA0002311380550000024
ammonia slip concentration, ppm; cNOIs the concentration of NO in the inlet flue gas, ppm;
Figure FDA0002311380550000025
for NO in inlet flue gasxReduced concentration of (d), mg/Nm3
Figure FDA0002311380550000026
For discharging NO in clean flue gasxReduced concentration of (d), mg/Nm3;O2Is the oxygen content of the inlet flue gas,%.
6. The method of claim 5, wherein the NO in the clean flue gas at the outlet of the desulfurization system is used as a correction for the denitration efficiency of the denitration systemxHas a reduced concentration of
Figure FDA0002311380550000027
7. The method of claim 5 or 6, wherein the denitration efficiency of the denitration system is modified,is characterized in that the denitration system comprises an A-side SCR reactor and a B-side SCR reactor, η,
Figure FDA0002311380550000028
CNO
Figure FDA0002311380550000029
O2The average of the data for the A-side SCR reactor and the B-side SCR reactor.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114373517A (en) * 2021-12-07 2022-04-19 苏州西热节能环保技术有限公司 Catalyst life prediction and evaluation calculation method based on regular denitration performance optimization
CN114460221A (en) * 2022-03-17 2022-05-10 触媒净化技术(南京)有限公司 Denitration process control method and system

Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005169331A (en) * 2003-12-15 2005-06-30 Jfe Engineering Kk Denitrification control method and program for the same
EP2108438A2 (en) * 2008-04-07 2009-10-14 Babcock & Wilcox Technical Services Group, Inc. Enhancement of conventional scr and sncr processes with ammonia destruction catalyst
EP2385226A1 (en) * 2009-01-30 2011-11-09 Mitsubishi Heavy Industries, Ltd. Exhaust gas cleaning device
CN102565274A (en) * 2012-01-17 2012-07-11 广东电网公司电力科学研究院 Modifying method for catalyst activity in power plant SCR (selective catalytic reduction) denitration system
CN103424515A (en) * 2013-07-31 2013-12-04 广东电网公司电力科学研究院 Method for detecting activity of catalyst of selective catalytic reduction (SCR) denitration system, and system thereof
CN103592407A (en) * 2013-11-07 2014-02-19 华北电力大学 On-line power plant SCR (Selective Catalytic Reduction) denitration system catalyst activity monitoring method
CN103674103A (en) * 2013-10-18 2014-03-26 广东电网公司电力科学研究院 Performance testing method for SCR (Selective Catalytic Reduction) flue gas denitration system
CN104297008A (en) * 2014-10-11 2015-01-21 苏州华瑞能泰发电技术有限公司 Denitration device potential assessment and prediction method based on field performance tests
US20150119497A1 (en) * 2012-03-29 2015-04-30 Sanyo Chemical Industries, Ltd. Vinyl resin and resin composition
CN104826492A (en) * 2015-04-23 2015-08-12 华北电力大学(保定) Improvement method for selective catalytic reduction flue gas denitrification and ammonia injection control system
CN104826493A (en) * 2015-04-23 2015-08-12 华北电力大学(保定) Control method for selective catalytic reduction flue gas denitrification system
CN105572291A (en) * 2015-12-17 2016-05-11 云南电网有限责任公司电力科学研究院 Catalyst activity detection method for boiler denitrification system
CN105597538A (en) * 2015-12-22 2016-05-25 河北省电力建设调整试验所 Denitration reductant adding control method based on time difference matching and control device of control method
CN105629738A (en) * 2016-03-24 2016-06-01 内蒙古瑞特优化科技股份有限公司 SCR (Selective Catalytic Reduction) flue gas denitration system control method and apparatus
CN205730889U (en) * 2016-05-31 2016-11-30 中国大唐集团科学技术研究院有限公司华中分公司 A kind of denitrating system and the ammonia-gas spraying device of a kind of denitrating system
CN106248864A (en) * 2016-07-13 2016-12-21 大唐南京环保科技有限责任公司 A kind of SCR denitration life-span prediction method based on magnanimity service data
CN107103176A (en) * 2017-01-17 2017-08-29 东南大学 Coal-burning boiler SCR catalyst life assessment method based on multisource information fusion technology
CN109364753A (en) * 2018-10-16 2019-02-22 厦门邑通软件科技有限公司 A kind of method of the prediction of catalyst residue life and section ammonia
CN109493250A (en) * 2018-11-06 2019-03-19 大唐南京环保科技有限责任公司 A kind of appraisal procedure of the denitration ability of SCR reactor
CN109521139A (en) * 2018-12-17 2019-03-26 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 A kind of catalyst activity online test method
CN109709260A (en) * 2018-12-29 2019-05-03 国电环境保护研究院有限公司 A kind of life-cycle management method of SCR denitration
CN110045054A (en) * 2019-03-20 2019-07-23 华电电力科学研究院有限公司 A kind of method of SCR denitration life appraisal and prediction
CN110064302A (en) * 2019-04-30 2019-07-30 中国大唐集团科学技术研究院有限公司华中电力试验研究院 A kind of honeycomb type denitrification catalyst SO2Oxygenation efficiency real-time on-line detecting method and device

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005169331A (en) * 2003-12-15 2005-06-30 Jfe Engineering Kk Denitrification control method and program for the same
EP2108438A2 (en) * 2008-04-07 2009-10-14 Babcock & Wilcox Technical Services Group, Inc. Enhancement of conventional scr and sncr processes with ammonia destruction catalyst
EP2385226A1 (en) * 2009-01-30 2011-11-09 Mitsubishi Heavy Industries, Ltd. Exhaust gas cleaning device
CN102565274A (en) * 2012-01-17 2012-07-11 广东电网公司电力科学研究院 Modifying method for catalyst activity in power plant SCR (selective catalytic reduction) denitration system
US20150119497A1 (en) * 2012-03-29 2015-04-30 Sanyo Chemical Industries, Ltd. Vinyl resin and resin composition
CN103424515A (en) * 2013-07-31 2013-12-04 广东电网公司电力科学研究院 Method for detecting activity of catalyst of selective catalytic reduction (SCR) denitration system, and system thereof
CN103674103A (en) * 2013-10-18 2014-03-26 广东电网公司电力科学研究院 Performance testing method for SCR (Selective Catalytic Reduction) flue gas denitration system
CN103592407A (en) * 2013-11-07 2014-02-19 华北电力大学 On-line power plant SCR (Selective Catalytic Reduction) denitration system catalyst activity monitoring method
CN104297008A (en) * 2014-10-11 2015-01-21 苏州华瑞能泰发电技术有限公司 Denitration device potential assessment and prediction method based on field performance tests
CN104826493A (en) * 2015-04-23 2015-08-12 华北电力大学(保定) Control method for selective catalytic reduction flue gas denitrification system
CN104826492A (en) * 2015-04-23 2015-08-12 华北电力大学(保定) Improvement method for selective catalytic reduction flue gas denitrification and ammonia injection control system
CN105572291A (en) * 2015-12-17 2016-05-11 云南电网有限责任公司电力科学研究院 Catalyst activity detection method for boiler denitrification system
CN105597538A (en) * 2015-12-22 2016-05-25 河北省电力建设调整试验所 Denitration reductant adding control method based on time difference matching and control device of control method
CN105629738A (en) * 2016-03-24 2016-06-01 内蒙古瑞特优化科技股份有限公司 SCR (Selective Catalytic Reduction) flue gas denitration system control method and apparatus
CN205730889U (en) * 2016-05-31 2016-11-30 中国大唐集团科学技术研究院有限公司华中分公司 A kind of denitrating system and the ammonia-gas spraying device of a kind of denitrating system
CN106248864A (en) * 2016-07-13 2016-12-21 大唐南京环保科技有限责任公司 A kind of SCR denitration life-span prediction method based on magnanimity service data
CN107103176A (en) * 2017-01-17 2017-08-29 东南大学 Coal-burning boiler SCR catalyst life assessment method based on multisource information fusion technology
CN109364753A (en) * 2018-10-16 2019-02-22 厦门邑通软件科技有限公司 A kind of method of the prediction of catalyst residue life and section ammonia
CN109493250A (en) * 2018-11-06 2019-03-19 大唐南京环保科技有限责任公司 A kind of appraisal procedure of the denitration ability of SCR reactor
CN109521139A (en) * 2018-12-17 2019-03-26 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 A kind of catalyst activity online test method
CN109709260A (en) * 2018-12-29 2019-05-03 国电环境保护研究院有限公司 A kind of life-cycle management method of SCR denitration
CN110045054A (en) * 2019-03-20 2019-07-23 华电电力科学研究院有限公司 A kind of method of SCR denitration life appraisal and prediction
CN110064302A (en) * 2019-04-30 2019-07-30 中国大唐集团科学技术研究院有限公司华中电力试验研究院 A kind of honeycomb type denitrification catalyst SO2Oxygenation efficiency real-time on-line detecting method and device

Non-Patent Citations (12)

* Cited by examiner, † Cited by third party
Title
SIHAI HU ET,: "Simultaneous removal of nitrate and aniline from groundwater by cooperating heterotrophic denitrification with anaerobic ammonium oxidation", 《DESALINATION AND WATER TREATMENT》 *
SIHAI HU ET,: "Simultaneous removal of nitrate and aniline from groundwater by cooperating heterotrophic denitrification with anaerobic ammonium oxidation", 《DESALINATION AND WATER TREATMENT》, 27 August 2013 (2013-08-27), pages 1 - 15 *
YANHONG GAO ET,: "Numerical Simulation and Optimization of Flow Field in the SCR Denitrification System on a 600 MW Capacity Units", 《ENERGY PROCEDIA》 *
YANHONG GAO ET,: "Numerical Simulation and Optimization of Flow Field in the SCR Denitrification System on a 600 MW Capacity Units", 《ENERGY PROCEDIA》, 31 December 2012 (2012-12-31), pages 370 - 375, XP028466682, DOI: 10.1016/j.egypro.2011.12.944 *
吴吉: "百万机组脱硝***AIG 喷氨控制分析与优化", 《化工设计》 *
吴吉: "百万机组脱硝***AIG 喷氨控制分析与优化", 《化工设计》, vol. 29, no. 4, 15 August 2019 (2019-08-15), pages 43 - 47 *
杨栋 等,: "脱硝优化控制***研究与应用", 《山东电力技术》 *
杨栋 等,: "脱硝优化控制***研究与应用", 《山东电力技术》, vol. 44, no. 7, 31 December 2017 (2017-12-31), pages 61 - 64 *
王礼鹏 等,: "1 000 MW 电站锅炉布袋除尘器入口", 《华电技术》 *
王礼鹏 等,: "1 000 MW 电站锅炉布袋除尘器入口", 《华电技术》, vol. 41, no. 4, 31 July 2019 (2019-07-31), pages 18 - 23 *
豆丁网: "NOx浓度计算方法", 《豆丁网》 *
豆丁网: "NOx浓度计算方法", 《豆丁网》, 22 June 2013 (2013-06-22), pages 1 - 3 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114373517A (en) * 2021-12-07 2022-04-19 苏州西热节能环保技术有限公司 Catalyst life prediction and evaluation calculation method based on regular denitration performance optimization
CN114460221A (en) * 2022-03-17 2022-05-10 触媒净化技术(南京)有限公司 Denitration process control method and system

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