CN203216921U - Smoke distribution measuring device in SCR (selective catalytic reduction) smoke desulfurizing system - Google Patents
Smoke distribution measuring device in SCR (selective catalytic reduction) smoke desulfurizing system Download PDFInfo
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- CN203216921U CN203216921U CN 201320254786 CN201320254786U CN203216921U CN 203216921 U CN203216921 U CN 203216921U CN 201320254786 CN201320254786 CN 201320254786 CN 201320254786 U CN201320254786 U CN 201320254786U CN 203216921 U CN203216921 U CN 203216921U
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- 239000000779 smoke Substances 0.000 title claims abstract description 24
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract description 3
- 230000003009 desulfurizing effect Effects 0.000 title abstract 4
- 239000003546 flue gas Substances 0.000 claims description 105
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 103
- 238000005259 measurement Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 38
- 229910021529 ammonia Inorganic materials 0.000 abstract description 19
- 238000005070 sampling Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 238000004458 analytical method Methods 0.000 description 12
- 239000007921 spray Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 5
- 230000008676 import Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000004868 gas analysis Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material 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
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 switch clack box 4 Chemical compound 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a smoke distribution measuring device in an SCR (selective catalytic reduction) smoke desulfurizing system. Smoke component measuring of 60-100 grid points can be realized within 30 minutes, a NOx distribution field in an SCR desulfurizing device can be obtained, and when the smoke distribution measuring device is applied to a coal-fired boiler SCR desulfurizing system for optimizing and adjusting of ammonia injection, working efficiency and measuring accuracy can be greatly improved. The SCR smoke measuring device comprises multiple sampling pipes, a first valve group box, a second valve group box, a suction pump, a switching valve box and a smoke analyzer, each sampling pipe is connected with the first valve group box and the second valve group box which are both connected with the suction pump, the suction pump is connected with the smoke analyzer which is externally connected with a control unit, and the control unit is simultaneously connected with a central computer, the switching valve box, the first valve group box and the second valve group box.
Description
Technical field
The utility model relates to a kind of smoke distribution measurement mechanism, especially designs a kind of SCR flue gas denitrification system smoke distribution measurement mechanism.
Background technology
GB13223-2011 " thermal power plant's atmosphere pollutants emission standards " has implemented more strict NO
xEmission standard, the SCR(selective catalytic reduction) be denitration technology the most ripe, that be most widely used.The most installation SCR flue gas denitrification systems of selecting of at present newly-built coal fired power generation unit reduce NO
xDischarging, what the SCR flue gas denitrification system was not installed must reduce NO by transforming at the labour genset before 2015
xDischarging, SCR flue gas denitrification system also will be one of main selections.
The principle of SCR denitrating flue gas is under catalyst action, sprays into ammonia NH in flue gas
3, with the NO in the flue gas
xBe catalysed and reduced into N
2And H
2O, the key reaction formula is 4NO+4NH
3+ O
2=4N
2+ 6H
2O.Because the ammonia that sprays into and the NO in the flue gas
xCan not accomplish 100% even mixing, some zone in the SCR flue gas denitrification system, NH
3Content is lower than the NO in the flue gas
x, cause denitration efficiency to descend; And at some regional NH
3Content can be greater than the NO in the flue gas
xContent so just causes NH
3Superfluous relatively, this part superfluous ammonia is known as the escaping of ammonia.The escaping of ammonia causes ammoniacal liquor or urea waste, water vapour, the SO in the escaping of ammonia and the flue gas on the other hand on the one hand
3Generate the corrosive substance ammonium hydrogen sulfate of thickness, SCR flue gas denitrification system and upstream device are resulted in blockage and corrode, have a strong impact on the security of unit operation.So NH in the SCR denitrating flue gas
3And NO
xMixability denitration efficiency and the security that improves the SCR flue gas denitrification system had great influence.The SCR of coal-burning power plant catalyst arrangement surpasses 250m at sectional area at present
2Reactor in, flue gas medium can be very inhomogeneous in CONCENTRATION DISTRIBUTION and the velocity distribution of so big cross section internal flow, to flue gas and NH
3Even mixing very unfavorable.The spray ammonia system of SCR is arranged the barrier type nozzle usually in reactor cross section, each nozzle is established manual modulation valve, in order to realize NH
3And NO
xAbundant mixing contact, need in operational process, spray the optimization that ammonia flow distributes and regulate.Only measure the NO of SCR flue gas denitrification system import and export
xDistribution, could accurately adjust NH
3The ammonia spraying amount of each nozzle of spraying system is set up and NO
xThe consistent NH in CONCENTRATION DISTRIBUTION field
3Spray into dosage, each the regional NO that guarantees at the SCR flue gas denitrification system
xWith NH
3The chemical equivalent coupling avoids occurring NH
3Not enough or superfluous regional area reaches the purpose that improves denitration efficiency and reduce the escaping of ammonia.
Measure the NO of SCR flue gas denitrification system import and export
xDistribution to adopt conventional measuring method be unpractical.Whole layer catalyzer is made up of many square modules in the SCR flue gas denitrification system, and the size according to catalyst module is divided into many grids with SCR flue gas denitrification system xsect usually.For example the at present general catalyst module length of side is 1～2m, and the area of therefore measuring grid is 2m
2, each SCR flue gas denitrification system has 60-100 grid approximately.In order accurately to control spray NH
3Amount needs to be grasped each module import and export NO
xConcentration is namely measured the NO of 60-100 grid element center point
xConcentration.Conventional smoke sampling method is to insert inner each grid of flue with artificial portable sampling gun, and pointwise suction flue gas is analyzed.This method needs the manual switching sampling gun, spends a large amount of manpowers and time, and flue gas to be sucked up to the flue gas analyzer pipeline by sampling gun longer usually, also spend the plenty of time.The smoke distribution measurement that conventional method is finished a SCR flue gas denitrification system total cross-section needs more than 4 hours, and because Measuring Time is long, the genset operating mode is difficult to keep stable, will cause flue gas concentration distribution field fluctuation in the measuring process, and measurement result exists than mistake.When the ammonia injection of carrying out the SCR flue gas denitrification system is optimized and revised, need be according to SCR flue gas denitrification system import and export NO
xDistribution situation is adjusted the valve opening of spraying ammonia barrier respective regions, needs to measure SCR flue gas denitrification system import and export NO before each the adjustment and after the adjustment
xDistribution situation is until final SCR flue gas denitrification system outlet NO
xThe homogeneity that distributes reaches requirement.Often such adjustment needs for several times.If adopt conventional at present smoke sampling method too to waste time and energy actual can't enforcement.
At present because SCR flue gas denitrification system flue gas concentration distributes is difficult to measure with conventional method, the test of optimizing and revising of the SCR flue gas denitrification system of domestic coal-burning power plant is popularized as yet and is carried out.
The utility model content
The purpose of this utility model provides a kind of SCR flue gas denitrification system smoke distribution measurement mechanism in order to address the above problem exactly, is implemented in the exhaust gas components of finishing 60～100 net points in 30 minutes and measures, and obtains NO in the SCR denitrification apparatus
xDistribution field is applied to coal-burning boiler SCR denitrating system spray ammonia and optimizes and revises the accuracy that can increase work efficiency greatly and measure.
Technical problem to be solved in the utility model is achieved by the following technical solution:
A kind of SCR flue gas denitrification system smoke distribution measurement mechanism comprises a plurality of stopple coupons, the first valve sets case, the second valve sets case, suction pump, switching clack box, flue gas analyzer; Each stopple coupon connects the first valve sets case and the second valve sets case, and the first valve sets case all is connected with suction pump with the second valve sets case, and suction pump connects switches clack box, switches clack box and connects flue gas analyzer;
The external control module of described flue gas analyzer, control module connect central computer simultaneously, switch clack box, the first valve sets case, the second valve sets case.
Described stopple coupon inserts flue from the gaging hole on the SCR reactor walling of flue, and stopple coupon one end end opening is positioned at the central point that the SCR reactor is measured each grid of dividing in the cross section, and the other end is drawn out to flue and connects each valve sets case outward.
Described each valve sets case is established 1 way outlet, at least 2 road entrances, and all entrances are connected in parallel to an outlet, establish valve between the entrance and exit, establishes the hand switch of valve on each valve sets box body, but manual operation when adapting to emergency situations.
2 road entrances and 2 way outlets are established in described suction pump, and one road entrance connects the first valve sets case and 1 way outlet, another road entrance connect the second valve sets case and 1 way outlet.
Described switching clack box is established 2 road entrances and 1 way outlet, and 2 road entrances are connected in parallel to 1 way outlet.
A valve and a bypass valve are established in every road in the described switching clack box, and valve is connected between the entrance and exit, and one of bypass valve is connected between entrance and the valve, and the other end connects atmosphere.
Described valve is connected with control module with bypass valve, and central computer is by the switch motion of control module by-pass valve control.
A kind of SCR flue gas denitrification system smoke distribution measurement mechanism measuring method step is:
Each valve of original state is in closed condition;
1) the multichannel stopple coupon is put into flue, will connect between each device feature with flue gas connection sebific duct and cable;
2) the first valve sets case, the second valve sets case and suction pump are placed in measuring table, the outlet of next-door neighbour's stopple coupon;
3) open suction pump, flue gas analyzer, finish the equipment preheating;
4) begin to measure flow process:
The switch that control module is controlled each valve realizes that the first passage flue gas enters flue gas analyzer analysis in the first valve sets case, and it is to be measured that the first passage flue gas enters bypass etc. in the second valve sets case;
5) completing steps 4 in the analysis time of setting) after the flue gas analysis, control module is controlled the switch of each valve and is realized that the second valve sets case first passage flue gas enters flue gas analyzer analysis, and it is to be measured that the second channel flue gas of the first valve sets case enters bypass etc.;
6) completing steps 5 in the analysis time of setting) after the flue gas analysis, control module is controlled the switch of each valve and is realized that the first valve sets case second channel flue gas enters flue gas analyzer analysis, and it is to be measured that the second channel flue gas of the second valve sets case enters bypass etc.;
7) according to step 5), 6), the first valve sets case and each passage flue gas of the second valve sets case are in turn to be measured and waiting status, and each passage flue gas is sent to the analytic process that flue gas analyzer is finished all remaining channel flue gases one by one;
8) each measurement point O in the measuring process
2Composition be recorded analysis, if O
2Be higher than empirical value abnormally, show that there is air-leak section in measurement mechanism, need carry out leak test to measurement mechanism.
The on off state of described each valve of step 4) is two valve opens of the first passage of the first valve sets case and the interior correspondence of the second valve sets case, and the bypass valve of the valve open of the connection first valve sets case, the connection second valve sets case is opened in the switching clack box.
The on off state of described each valve of step 5) is to switch the valve closing, the bypass valve that connect the first valve sets case in the clack box to open, switch the valve open, the bypass valve that connect the second valve sets case in the clack box and close, the valve open of first passage valve closing, second channel in the first valve sets case.
The on off state of described each valve of step 6) is to switch the valve open, the bypass valve that connect the first valve sets case in the clack box to close, switch the valve closing, the bypass valve that connect the second valve sets case in the clack box and open, the valve open of first passage valve closing, second channel in the second valve sets case.
The beneficial effects of the utility model are as follows:
The utility model device inserts inner each net point of flue with the multichannel stopple coupon, the auto-pumping flue gas, one road flue gas enters in the process that flue gas analyzer analyzes, another road flue gas is continued to transmit the flue gas analyzer porch, be in waiting status, compare with the artificial point-to-point measurement method of routine, omitted plug stopple coupon and the flue gas suction stand-by period, can save plenty of time and manpower and materials.
Utilize the utility model device can be to SCR flue gas denitrification system entry and exit NO
xAnd O
2Concentration field is measured fast, is applied to the test of optimizing and revising of SCR spray ammonia system, after the ammonia spraying amount that sprays each nozzle of barrier being adjusted, can measure the NO after the adjustment rapidly at every turn
xAnd O
2Distribution situation can be carried out 5-7 spray ammonia and be optimized and revised in 8 hours, greatly improved work efficiency and accuracy, makes at present because the spray ammonia that is difficult to realize according to conventional method is optimized and revised test can popularize.According to interrelated data, the SCR system ammonia consumption after the optimization can reduce 30%, and catalyst life prolongs more than 30%, is example with the 600MW unit, can economize on the use of funds every year 8000000 yuan.
Description of drawings
Fig. 1 is the utility model device embodiment connection diagram;
Fig. 2 is the utility model embodiment exhaust gases passes connection diagram.
1 flue wherein, 2 stopple coupons, 3 suction pumps, 4 switch clack box, 5 flue gas analyzers, 6 control modules, 7 central computers, 8 digital signal cables, 9 cables, 10 the 0th valves, 11 first valves, 12 second valves, 13 the 3rd bypass valves, 14 the 4th valves, 15 the 5th bypass valves, 16 the 6th valves, 17 the 7th valves, the A1 first valve sets case, the A2 second valve sets case, 311 suction pumps, first entrance, 312 suction pumps, second entrance, 321 suction pumps, first outlet, 322 suction pumps, second outlet, 41 switch clack box first entrance, and 42 switch clack box second entrance, and 43 switch the clack box outlet.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is the utility model device embodiment connection diagram.
Fig. 2 is the utility model embodiment exhaust gases passes sebific duct connection diagram.
Switch to establish in the clack box 4 and switch clack box first entrance 41 and switch clack box second entrance 42, the parallel connection of two-way entrance is then switched clack box to one the tunnel and is exported 43, switch clack box first entrance 41 and switch between the clack box outlet 43 and establish second valve 12, the 3rd bypass valve 13 1 ends are connected in and switch between clack box first entrance 41 and second valve 12, and the other end is connected in atmosphere; Establish the 4th valve 14, the five bypass valves 15 1 ends between switching clack box second entrance 42 and the switching clack box outlet 43 and be connected between switching clack box second entrance 42 and the 4th valve 14, the other end is connected in atmosphere, switches the hand switch of clack box 4 peripheral hardware valves.
First valve sets case A1 outlet is connected to suction pump first entrance 311, the second valve sets case A2 outlet and is connected to suction pump second entrance 312; Suction pump first outlet 321 of suction pump first entrance 311 correspondences is connected to switches clack box first entrance 41, and suction pump second outlet 322 of suction pump second entrance 312 correspondences is connected to switches clack box second entrance 42; Switch clack box outlet 43 and be connected to flue gas analyzer 5.
The measuring method of the utility model measurement mechanism is as follows:
The first valve sets case A1 and the second valve sets case A2 and suction pump 3 are placed in 2 outlets of measuring table next-door neighbour stopple coupon, reduce the sebific duct connecting line; Thereby shorten the stroke of suction flue gas, reduce the stand-by period of suction flue gas, switch clack box 4, flue gas analyzer 5, control module 6 and central computer 7 and belong to exact instrument, it is good to be arranged in environment, apart from SCR denitrification apparatus place far away.
Each valve of original state is in closed condition;
1, central computer 7 control programs are opened the first passage exhaust gases passes and are measured flow process, open the 0th valve 10, first valve 11 of first passage in the first valve sets case A1 and the second valve sets case A2 simultaneously, suction two-way flue gas to suction pump first entrance 311 and suction pump second goes into 312, via suction pump first outlet 321 and suction pump second outlet 322, arrive and switch clack box first entrance 41 and switch clack box second entrance 42;
2, switch clack box 4 according to central computer 7 instructions with second valve 12 open, the 3rd bypass valve 13 is closed, the 4th valve 14 closures, the 5th bypass valve 15 are opened; The flue gas that switches clack box first entrance 41 carries out constituent analysis by switching clack box outlet 43 arrival flue gas analyzers 5, analyze data and be sent to storage and processing in the central computer 7 by control module 6, the flue gas that switches clack box second entrance 42 simultaneously continues to be sucked up to the 5th bypass valve 15 places and enters atmosphere, is in waiting status;
3, after the flue gas analysis of switching clack box first entrance 41 is finished, switch according to central computer 7 instructions that clack boxes 4 controls second valve 12 is closed, the 3rd bypass valve 13 is opened, the 4th valve 14 is opened, the 5th bypass valve 15 is closed; Switch clack box second entrance 42 flue gases and enter flue gas analyzer 5, the first valve sets case A1 first passage the 0th valve 10 is closed simultaneously, the 6th valve 16 of second channel is opened, and the first valve sets case A1 second channel flue gas is sucked up to the 3rd bypass valve 13 places and enters atmosphere, enters waiting status;
4, after 42 flue gas analyses of switching clack box second entrance are finished, switch clack box 4 controls the 4th valve 14 closures, 15 unlatchings of the 5th bypass valve according to central computer 7 instructions, second valve 12 is opened, the 3rd bypass valve 13 is closed, and the first valve sets case A1 second channel flue gas enters analysis state; The second valve sets case A2 first passage, first valve 11 is closed simultaneously, and the 7th valve 17 of second channel is opened, and the second valve sets case A2 second channel flue gas is sucked up to the 5th bypass valve 15 places and enters atmosphere, enters waiting status;
5, according to step 3,4 process, one road flue gas of a certain valve sets case is when analyzing, then one road flue gas of another valve sets case is in waiting status, finish the analysis of valve sets case remaining channel flue gas successively, flue gas analyzer 5 is delivered to central computer 7 storages by control module 6 with analysis result and handles.
6, the NO value of each measurement point is converted into NO
2, and with reference to O
2Be transformed into the NOx value under the benchmark oxygen amount, O
2Composition is with the actual value record and show O
2Distribution can be used as the indication of system tightness, each measurement point O in the measuring process
2Composition be recorded analysis, if O
2Be higher than empirical value abnormally, show that there is air-leak section in measurement mechanism, need carry out leak test to measurement mechanism.
Though above-mentionedly by reference to the accompanying drawings embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (6)
1. a SCR flue gas denitrification system smoke distribution measurement mechanism is characterized in that, comprises a plurality of stopple coupons, the first valve sets case, the second valve sets case, suction pump, switching clack box, flue gas analyzer; Each stopple coupon is connected to the first valve sets case and the second valve sets case, and the first valve sets case all is connected with suction pump with the second valve sets case, and suction pump connects switches clack box, switches clack box and connects flue gas analyzer;
The external control module of described flue gas analyzer, control module connect central computer simultaneously, switch clack box, the first valve sets case, the second valve sets case.
2. a kind of SCR flue gas denitrification system smoke distribution measurement mechanism as claimed in claim 1, it is characterized in that, described stopple coupon inserts flue from the gaging hole on the SCR flue gas denitrification system walling of flue, stopple coupon one end end opening is positioned at the central point that the SCR flue gas denitrification system is measured each grid of dividing in the cross section, and the other end is drawn out to flue and connects each valve sets case outward.
3. a kind of SCR flue gas denitrification system smoke distribution measurement mechanism as claimed in claim 1, it is characterized in that, described each valve sets case is established 1 way outlet, at least 2 road entrances, all entrances are connected in parallel to an outlet, establish valve between each valve sets tank inlet and the outlet, establish the hand switch of valve on each valve sets box body.
4. a kind of SCR flue gas denitrification system smoke distribution measurement mechanism as claimed in claim 1, it is characterized in that, 2 road entrances and 2 way outlets are established in described suction pump, and one road entrance connects the first valve sets case and 1 way outlet, another road entrance connect the second valve sets case and 1 way outlet.
5. a kind of SCR flue gas denitrification system smoke distribution measurement mechanism as claimed in claim 1 is characterized in that described switching clack box is established 2 road entrances and 1 way outlet, and 2 road entrances are connected in parallel to 1 way outlet.
6. a kind of SCR flue gas denitrification system smoke distribution measurement mechanism as claimed in claim 5, it is characterized in that a valve and a bypass valve are established in the every road of described switching clack box, valve is connected between the entrance and exit, one of bypass valve is connected between entrance and the valve, and the other end connects atmosphere.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254786 CN203216921U (en) | 2013-05-10 | 2013-05-10 | Smoke distribution measuring device in SCR (selective catalytic reduction) smoke desulfurizing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254786 CN203216921U (en) | 2013-05-10 | 2013-05-10 | Smoke distribution measuring device in SCR (selective catalytic reduction) smoke desulfurizing system |
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|---|---|---|---|
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245762A (en) * | 2013-05-10 | 2013-08-14 | 国家电网公司 | Flue gas distribution measuring device and method of SCR (Selective Catalytic Reduction) flue gas denitration system |
| CN103969403A (en) * | 2014-05-09 | 2014-08-06 | 哈尔滨工程大学 | Method for measuring uniformity of ammonia gas concentration in SCR (silicon controller rectifier) system pipeline |
| CN104880536A (en) * | 2015-03-30 | 2015-09-02 | 北京京能电力股份有限公司石景山热电厂 | Multi-point-location nitrogen oxide continuous monitoring device and continuous monitoring method for SCR reactors |
| CN105258985A (en) * | 2015-11-10 | 2016-01-20 | 贵州电网有限责任公司电力科学研究院 | SCR outlet flue fracture surface nitric oxide distribution monitoring device |
| CN106596867A (en) * | 2017-01-19 | 2017-04-26 | 国电科学技术研究院 | SCR outlet flue cross section nitric oxide and oxygen concentration online monitoring method and system |
| CN107655726A (en) * | 2017-09-20 | 2018-02-02 | 国电环境保护研究院 | One kind is based on gridding method flue NOxConcentration measurement system and method |
| CN108344604A (en) * | 2018-04-11 | 2018-07-31 | 华南理工大学 | A kind of SCR reative cells NOXThe online data-logger of concentration and control method |
| CN109647184A (en) * | 2018-12-10 | 2019-04-19 | 广东电网有限责任公司 | A kind of coal-burning power plant's denitrating system |
| CN110695941A (en) * | 2019-09-20 | 2020-01-17 | 肖育军 | Wide flue SCR denitration test instrument set case |
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2013
- 2013-05-10 CN CN 201320254786 patent/CN203216921U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245762A (en) * | 2013-05-10 | 2013-08-14 | 国家电网公司 | Flue gas distribution measuring device and method of SCR (Selective Catalytic Reduction) flue gas denitration system |
| CN103969403A (en) * | 2014-05-09 | 2014-08-06 | 哈尔滨工程大学 | Method for measuring uniformity of ammonia gas concentration in SCR (silicon controller rectifier) system pipeline |
| CN103969403B (en) * | 2014-05-09 | 2015-07-22 | 哈尔滨工程大学 | Method for measuring uniformity of ammonia gas concentration in SCR (silicon controller rectifier) system pipeline |
| CN104880536A (en) * | 2015-03-30 | 2015-09-02 | 北京京能电力股份有限公司石景山热电厂 | Multi-point-location nitrogen oxide continuous monitoring device and continuous monitoring method for SCR reactors |
| CN105258985A (en) * | 2015-11-10 | 2016-01-20 | 贵州电网有限责任公司电力科学研究院 | SCR outlet flue fracture surface nitric oxide distribution monitoring device |
| CN106596867A (en) * | 2017-01-19 | 2017-04-26 | 国电科学技术研究院 | SCR outlet flue cross section nitric oxide and oxygen concentration online monitoring method and system |
| CN107655726A (en) * | 2017-09-20 | 2018-02-02 | 国电环境保护研究院 | One kind is based on gridding method flue NOxConcentration measurement system and method |
| CN107655726B (en) * | 2017-09-20 | 2020-05-19 | 国电环境保护研究院有限公司 | Flue NO based on grid methodxConcentration measuring system and method |
| CN108344604A (en) * | 2018-04-11 | 2018-07-31 | 华南理工大学 | A kind of SCR reative cells NOXThe online data-logger of concentration and control method |
| CN109647184A (en) * | 2018-12-10 | 2019-04-19 | 广东电网有限责任公司 | A kind of coal-burning power plant's denitrating system |
| CN110695941A (en) * | 2019-09-20 | 2020-01-17 | 肖育军 | Wide flue SCR denitration test instrument set case |
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