CN102553421B - Denitration method in SNCR (selective non catalytic reduction) furnace for exactly realizing temperature window tracking - Google Patents
Denitration method in SNCR (selective non catalytic reduction) furnace for exactly realizing temperature window tracking Download PDFInfo
- Publication number
- CN102553421B CN102553421B CN 201210018423 CN201210018423A CN102553421B CN 102553421 B CN102553421 B CN 102553421B CN 201210018423 CN201210018423 CN 201210018423 CN 201210018423 A CN201210018423 A CN 201210018423A CN 102553421 B CN102553421 B CN 102553421B
- Authority
- CN
- China
- Prior art keywords
- temperature
- furnace
- jetting
- stove
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract 2
- 239000007921 spray Substances 0.000 claims description 60
- 239000003546 flue gas Substances 0.000 claims description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 15
- 230000036413 temperature sense Effects 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 241000628997 Flos Species 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract description 9
- 230000006698 induction Effects 0.000 abstract description 2
- 230000001939 inductive effect Effects 0.000 abstract 2
- 239000000523 sample Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 150000001723 carbon free-radicals Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention relates to a denitration method in an SNCR (selective non catalytic reduction) furnace for exactly realizing temperature tracking, aiming at exactly realizing jetting by correspondingly adjusting the jetting quantity of reducing agent in the furnace according to furnace temperature change, furnace fire burning state and burning stage timely. In order to achieve the aim, the denitration method in the SNCR furnace for exactly realizing temperature tracking is adopted so that jetting points are determined according to a temperature curve obtained by temperature induction equipment which is originally in the furnace, and temperature inductive probes are arranged around the jetting points required in the furnace. The method comprises the following steps of: (1) during jetting, firstly judging the work states of the furnace by the temperature inductive equipment which is originally in the furnace, wherein the work states comprise a blow-in state, a normal work state and a blow-out state; (2) after the state is confirmed, extracting the temperatures around the corresponding jetting points; computing the temperatures, and according to the change curve of the different work states, obtaining the temperatures of the corresponding points in the furnace during the next jetting; and (3) computing jetting quantity according to the temperatures, sending out a command by means of master control, and jetting according to quantity.
Description
Technical field
The present invention relates to a kind of method of denitration, particularly the SNCR denitration in the stove method of accurate realization temperature tracking.
Background technology
Atmosphere pollution mainly comes from the Industrial Boiler smoke emissioning pollution, such as: Ferrous Metallurgy, Chemical Manufacture, thermal power generation, all be heavily contaminated discharging unit.In conventional art or the prior art, the control of fume emission is mainly contained gravitational dust collection, centrifugal dust-removing, bag-type dust, electrostatic precipitation, wet dust removal etc., all to reducing dust pollution in the fume emission, played certain effect.But to the toxic and harmful that gives off, act on very limited.For method of denitration, divided two kinds, a kind of is the CNR mode in the past, this complex structure is applicable to large-sized boiler, and it involves great expense, another kind of mode is the SNCR mode, this mode is applicable to miniature boiler, and it is cheap, but poor effect, certainly, the volume of boiler own is little, and discharge capacity is not necessarily very large, and this also is this mode reason of user selection; And in recent years, because more and more higher to the requirement of environmental emission amount, common fixed form has not satisfied the requirement of environment department.Existing SNCR mode is faced with acid test, because SNCR is directly with reducing agent, therefore has two large problems, and the one, stove fire temperature is indefinite, and two, indefinite in emitted dose.Nitrogen oxide NOx generates approach generally three kinds, and＜1〉heating power type, at high temperature oxidation generate NOx.＜2〉fuel type, refer to contain in the fuel nitride and be combined with oxygen, at high temperature generate NOx.＜3〉Quick-type, refer under the cold flame, owing to containing NOx accounting that carbon radicals exist to generate less than 5%.When ignition temperature is lower than 1300 when spending, almost there is not thermal NO x to produce.Conventional boiler NOx is mainly produced by fuel type generation approach.The measure of control NOx draining technology: the one, reduce ignition temperature, reduce the NOx growing amount.The 2nd, the NOx that has generated is removed in stove or in the flue.As NOx hybrid reaction in reducing agent and the flue gas, SNCR is exactly that the SNCR technology is called for short with ammonia.Spray ammonia process reducing NOx is had relatively high expectations to operating ambient temperature, only carries out in this narrow temperature of 850-1050 degree.For this selection and control to injector installation site, spray angle, injection flow seems very important.
Summary of the invention
Goal of the invention of the present invention provide a kind of can be in real time according to furnace temperature variation, stove fire fired state, combustion phases, come injection reduction dosage in the corresponding regulating stove, accurately realize the purpose of injection.
For solving the problems of the technologies described above, the present invention is achieved in that the SNCR denitration in the stove method that a kind of accurate realization temperature window is followed the trail of, it is characterized in that, the temperature curve that draws according to original temperature sensing apparatus in the stove, determine spray site, in stove, need the periphery of spray site that the temperature sense detector is installed;
(1) when spraying, at first judged which kind of duty of processing of boiler by original temperature sensing apparatus in the stove: be respectively the blow-on state, normal operating conditions is closed the stove state;
(2) determine state after, extract the peripheral temperature of respective spray point; Temperature is calculated, pressed the change curve of different operating state, draw when spraying, the temperature of respective point in the stove;
(3) according to the temperature computation emitted dose, given an order by master control, spray according to quantity.
This programme mainly is the rule of utilizing the stove internal combustion, at first determines the position of large spray site, further will be divided into three different operating states; Under different duties, applicable different spray site and emitted doses; The size with emitted dose of bursting out of described spray site, undertaken by the program that master control is established surely by thing, master control can be according to the variation of respective point furnace temperature, draw the residing state of boiler, according to state and stove fire curve, judge the temperature when spraying, set emitted dose and injection proportion according to injection temperation.
Technique scheme is done further refinement: the periphery of described spray site is installed the temperature sense detector, specifically refers to about spray site; It installs respectively up and down two, its topmost, distance about distance one distance is bottom reached by jetting fluid.Detection for temperature, we can not only understand certain a bit or 2 temperature, because furnace inner environment is complicated, certain a bit or 2 temperature can not represent the temperature of spray site periphery, spraying in addition also is that certain limit is arranged, and the temperature of test temperature when spraying has part to postpone, therefore, when detected temperatures, we will try one's best detects large scope.In addition, the up and down mode that this programme adopts is in order to be applicable to normal conditions, feelings, the variation of temperature, difference about only can producing.Because the high or fiery height that only can affect temperature such as low of fire; And can not affect for periphery.Therefore, we with test point be placed in spray site about.
Technique scheme is done further refinement, and described spray site becomes parabolic to arrange from furnace bottom to floss hole.For temperature detection in the stove, there is the people can detect bottom temp in the prior art, and for the SCNR system that has now in the technology, can specking be set at furnace bottom to nobody, mainly contain 2 reasons, the one, think the appearance that does not at this moment have nitre, content is few in other words, therefore there is no need, and two here can not be with spraying, exert an influence because be afraid of the temperature when opening, the stove fire intensification can be accepted impact.And because the increase of people's requirement, for boiler the startup stage, we still will process.Then in the bottom spray site is being installed in me, by the variation of temperature, is judging duty, again according to temperature, emitted dose is being carried out accurate Calculation; Thereby do not affecting denitration under the prerequisite that starts and heat up.
Along with the long of temperature raises, the bottom edge edge, in the situation that special or sprayable, as long as continue it is monitored, under suitable occasion, reducing agent still can spray, and the rising of temperature is so that the rising of spray site in addition, when normal operation, finished by parabola upper flat skating area; At this moment, in the situation that fire is the highest in the stove, the work spray site is transferred to again the floss hole place, and flue-gas temperature has herein reached injection temperation, and the injection of this moment no longer is aimed at burning things which may cause a fire disaster, but carries out for flue gas.When closing stove, the return course of just going further.This design is just quite perfect, the dead angle that can not produce injecting time point.
Technique scheme is done further to improve, and the periphery of described spray site is installed the temperature sense detector, specifically refers to about spray site; Install respectively two about it, of its high order end, distance about being reached by jetting fluid apart from one distance of low order end.This programme is to set for the dead angle of more reducing the space, in the stove of complexity, some corners might occur, and these turnings, owing to depositing of particularity, they may be long spray site; Therefore, in some special furnaces, we design the detected temperatures about spray site; Increase spray site with this; Be noted that also that at this spray site introduced in this programme except fixing injection, also can regulate direction, and can intelligence, spray with the fixed point that temperature is pointed to.
Upper technical scheme is done further to improve, and it also comprises a fume emission detector; The flue gas content information of outlet is reached control centre, and according to the exhaust gas volumn in single time, contained CO, O2 flue gas flow, and the temperature in the stove are set spray volume after calculating by control centre.Because the combustion case in the furnace is complicated, except setting up according to traditional analysis, we have also set the discharge capacity detection, and realization is moving constantly to detect the Dynamic Arrangement emitted dose; Thereby more reduce escape phenomenon.
We draw the integrity scheme of a summing-up to such scheme: the periphery of described spray site is installed the temperature sense detector, specifically refers to about spray site; It installs respectively up and down two, its topmost, distance about distance one distance is bottom reached by jetting fluid; The periphery of described spray site is installed the temperature sense detector, specifically refers to about spray site; Install respectively two about it, of its high order end, distance about being reached by jetting fluid apart from one distance of low order end; Described spray site becomes parabolic to arrange from furnace bottom to floss hole;
It comprises a fume emission detector; The flue gas content information of outlet is reached control centre, and according to the exhaust gas volumn in single time, contained CO, O2 flue gas flow, and the temperature in the stove are set spray volume after calculating by control centre;
Be provided with air volume test equipment at the air outlet place, by obtaining the size of air output, information be sent to control centre, by by control centre according to the air output in single time and the relation between the temperature, calculate emitted dose according to formula.
In a word, this patent is according to existing boiler combustion temperature history record, and on-the-spot multi-point temp actual measurement parameter and boiler CFD analysis result, simultaneously according to the boiler operatiopn air quantity, two parameters of Comprehensive Correlation reaction temperature and reaction time, the optimization selection position of opening.According to procedure auto-control reducing agent discharge rate, according to flue gas measured data NOx, NH
3Escape, CO, O2 flue gas flow, system is by calculative determination injection of reducing agent amount of jet.Different combustion phases adopt different reducing agent formula rates to realize accurately following the trail of
Different combustion phases in different running method, whether at first meet with temperature, working environment, determining whether needs to spray and the spray angle position if needing, utilize the injection prescription to control injection, the online NOx of detection of simultaneously employing discharges and the parameter of the escaping of ammonia is determined emitted dose.
Also adopt simultaneously the online NOx of detection discharging and NH
3The parameter of escaping is determined emitted dose.Described different combustion case refers to the combustion case that boiler moves when different load.As: boiler is under the light(-duty) service state, and coal-supplying amount reduces, air quantity turns down, the at this moment minimizing of flue gas flow, flow velocity slows down, the exhaust smoke level when totally exhaust smoke level is less than oepration at full load, comparatively speaking, the NOx emissions data will reduce.This moment, emitted dose can reduce under PLC control automatically.Coal-supplying amount reduces during light(-duty) service, air quantity turns down, and combustion temperature in hearth and exhaust gas temperature also can reduce, because SNCR denitration in the stove method, operating temperature is defined as the 850-1050 degree, and when ignition temperature is lower than 850 when spending, injector can stop to spray ammonia.In a word, the method for operation of boiler: start to on-load at full capacity from black furnace, again by at full capacity to light load to blowing out, the process of whole service, temperature, air quantity, smoke discharge amount all are rendered as one and rise gradually or the curvilinear trend of decline gradually.The different phase of different running method can bring the variation of temperature, air quantity, flue gas discharge capacity, and the variation of above-mentioned key element has determined again the variation of injector ammonia spraying amount to the variation of coal-supplying amount in the stove.No matter that a kind of method of operation, the coal-supplying amount in the above-mentioned key element, air quantity, temperature, flue gas discharge capacity all are rendered as one and edge up or gradually fall process.For the SNCR denitration in the stove method that realizes that the accurate temperature window is followed the trail of, in conjunction with above-mentioned each factor change characteristic, with several native modes of boiler operatiopn, the operational factors such as the coal-supplying amount under different phase, air quantity, temperature, flue gas discharge capacity, arrange fixing and the establishment input program, realize accurately following the trail of the objective by the PLC automatic control system.After sampling, tracking, control system were set up, remaining was exactly how to utilize the ammonia solution formula rate to realize accurate tracking.
Described utilization is sprayed prescription and is controlled injection, refers to add a certain proportion of demineralized water in ammonia solution, and the concentration of ammonia solution is arranged according to us, different running method, different phase, sampling, the needs of following the tracks of, controlling are set also establishment input program.So just can be under the control of PLC, realize denitration in the stove dispute ammonia amount and concentration ratio, press the variation of Boiler Operation and operational factor, reach accurately and follow the trail of the objective.
Description of drawings
Fig. 1 is design flow diagram of the present invention.
Fig. 2 is furnace internal spray point deployment figure of the present invention.
The specific embodiment
In order further to understand characteristics of the present invention, the present invention is further illustrated below in conjunction with accompanying drawing:
The SNCR denitration in the stove method that a kind of accurate realization temperature window is followed the trail of, the temperature curve that will draw according to furnace 1 interior original temperature sensing apparatus 5 before this, determine the position of spray site 2, certainly, for also setting separately heat detector to some special corners in the special furnace 1, separately monitoring is through drawing the change curve of its temperature after the long-term induction, thereby determine whether to install spray site, in stove, need the periphery of spray site that the temperature sense detector is installed.To the design of the point that sprays, we cast aside in the past mentality of designing, all design 7 places in the air port in the past, or allow the liquid that gushes out parallel with wind as far as possible, and for the design of this patent, because when spraying, liquid own has Compressed Gas, therefore, do not worry as for jet length, two, we are main in this patent to consider aspect two, first temperature, it two is and the contacting of flue gas; Therefore adopted to allow jet 2 follow flame to walk, be designed to parabolic.Come the requirement of satisfied temperature with this, with the flue gas contact problems, we drive reducing agent with compressed air to spray, and puncture the wind that air port 7 blows into as far as possible, thereby reach the purpose that fully contacts with flue gas.Be to allow the spray gun that sprays with the anglec of rotation on the other hand, can strengthen like this and the contacting of flue gas.Around the corner, with the nearer position of flue 3, because the particularity at this place, because its temperature obviously is lower than an interior temperature less, so in the situation that normal combustion, this is located according to circumstances, can substantially keep sustained firing, so we also are provided with a turning spray site 6 at this.
Nitrogen oxide NOx generates approach generally three kinds, and＜1〉heating power type, at high temperature oxidation generate NOx.＜2〉fuel type, refer to contain in the fuel nitride and be combined with oxygen, at high temperature generate NOx.＜3〉Quick-type, refer under the cold flame, owing to containing NOx accounting that carbon radicals exist to generate less than 5%.When ignition temperature is lower than 1300 when spending, almost there is not thermal NO x to produce.Conventional boiler NOx is mainly produced by fuel type generation approach.The measure of control NOx draining technology: the one, reduce ignition temperature, reduce the NOx growing amount.The 2nd, the NOx that has generated is removed in stove or in the flue.As NOx hybrid reaction in reducing agent and the flue gas, SNCR is exactly that the SNCR technology is called for short with ammonia.Spray ammonia process reducing NOx is had relatively high expectations to operating ambient temperature, only carries out in this narrow temperature of 850-1050 degree.For this selection and control to injector installation site, spray angle, injection flow seems very important.
When spraying, at first judged which kind of duty of processing of boiler by original temperature sensing apparatus in the stove: be respectively the blow-on state, normal operating conditions is closed the stove state; Under different duties, applicable different spray site and emitted doses; The size with emitted dose of bursting out of described spray site, undertaken by the program that master control is established surely by thing, master control can be according to the variation of respective point furnace temperature, draw the residing state of boiler, according to state and stove fire curve, judge the temperature when spraying, set emitted dose and injection proportion according to injection temperation.
After determining state, extract the temperature of respective spray point periphery; Temperature is calculated, pressed the change curve of different operating state, draw when spraying, the temperature of respective point in the stove.Because we obtain temperature is that small difference is arranged with spraying the temperature of advancing in fact, although present technology is very flourishing, can react at short notice, but, if do not have the stateful support, when critical point, our injection produces environmental disruption possibly, for this reason, we will understand first state, then configure emitted dose according to the operation curve of temperature under this state.For more prepare, more suitable understanding discharge capacity constantly, in the outlet of flue, set up fume emission detector 4, according to the discharging composition of flue gas content, the indexs of correlation such as unit discharge, after determining state, obtain above-mentioned information for the analysis discharge capacity that goes on foot once, emissions profile all is considerable, certainly, also want simultaneously at air inlet monitoring to be set, intake is monitored, and obtains equally the size of corresponding air quantity and the relation curve between the temperature.
By above-mentioned temperature when drawing next and spraying, according to the temperature computation emitted dose, given an order by master control again, spray according to quantity.The injection prescription that draws like this, emitted dose, accurate etc. relevant information, and then improved the denitrating technique level.
Claims (1)
1. accurately realize the SNCR denitration in the stove method that temperature window is followed the trail of for one kind, it is characterized in that, according to the temperature curve that original temperature sensing apparatus in the stove draws, determine spray site, in stove, need the periphery of spray site that the temperature sense detector is installed;
(1) when spraying, at first judge by original temperature sensing apparatus in the stove which kind of duty boiler is in: be respectively the blow-on state, normal operating conditions is closed the stove state;
(2) determine state after, extract the peripheral temperature of respective spray point; Temperature is calculated, pressed the change curve of different operating state, draw when spraying next time the temperature of respective point in the stove;
(3) according to the temperature computation emitted dose, given an order by master control, spray according to quantity;
The periphery of described spray site is installed the temperature sense detector, specifically refers to about spray site; It installs respectively up and down two, its topmost, distance about distance one distance is bottom reached by jetting fluid;
The periphery of described spray site is installed the temperature sense detector, specifically refers to about spray site; Install respectively two about it, of its high order end, distance about being reached by jetting fluid apart from one distance of low order end; Described spray site becomes parabolic to arrange from furnace bottom to floss hole;
It comprises a fume emission detector; The flue gas content information of outlet is reached control centre, by control centre according to the exhaust gas volumn in single time, contained CO, O
2Flue gas flow, and the temperature in the stove are set spray volume after calculating;
Be provided with air volume test equipment at the air outlet place, by obtaining the size of air output, information be sent to control centre, according to the air output in single time and the relation between the temperature, calculate emitted dose according to formula by control centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210018423 CN102553421B (en) | 2012-01-20 | 2012-01-20 | Denitration method in SNCR (selective non catalytic reduction) furnace for exactly realizing temperature window tracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210018423 CN102553421B (en) | 2012-01-20 | 2012-01-20 | Denitration method in SNCR (selective non catalytic reduction) furnace for exactly realizing temperature window tracking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102553421A CN102553421A (en) | 2012-07-11 |
| CN102553421B true CN102553421B (en) | 2013-10-16 |
Family
ID=46400828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210018423 Active CN102553421B (en) | 2012-01-20 | 2012-01-20 | Denitration method in SNCR (selective non catalytic reduction) furnace for exactly realizing temperature window tracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102553421B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423766B (en) * | 2013-07-18 | 2016-03-02 | 武汉九州三维燃烧科技有限公司 | A kind of firing optimization method improving SNCR denitration efficiency |
| CN104001420B (en) * | 2014-06-09 | 2016-01-20 | 盐城工学院 | The control method of a kind of flue gas SNCR denitration control device and use thereof |
| CN105214468B (en) * | 2014-06-10 | 2018-05-01 | 四川大学 | The ammonium hydroxide spray method and flusher of cement decomposing furnace SNCR method denitrating systems |
| CN104501195B (en) * | 2014-12-11 | 2017-05-31 | 杭州塘栖热电有限公司 | A kind of chain furnace and chain furnace method of denitration |
| CN106669406A (en) * | 2017-03-03 | 2017-05-17 | 东北师范大学 | Denitrified accurate urea spraying device based on double sensors |
| CN109200779A (en) * | 2017-07-04 | 2019-01-15 | 北京英斯派克科技有限公司 | A kind of device and method for the combustion zone denitration of carbon electrode open roasting furnace |
| CN107991885A (en) * | 2017-12-28 | 2018-05-04 | 华能吉林发电有限公司长春热电厂 | A kind of coal-burning power plant's denitration spray ammonia autocontrol method and system |
| CN110513702A (en) * | 2019-08-19 | 2019-11-29 | 上海南一环保科技有限公司 | A kind of waste incinerator denitration adjustable spray equipment and SNCR denitration system |
| CN114100330B (en) * | 2021-11-08 | 2024-04-23 | 北京云岚科技有限公司 | Ammonia spraying automatic control method and system for nitrogen oxides discharged by industrial enterprises |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101668929A (en) * | 2006-12-22 | 2010-03-10 | 卡万塔能源公司 | Dynamic control of selective non-catalytic reduction system for semi-batch-fed stoker-based municipal solid waste combustion |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7780934B2 (en) * | 2005-09-06 | 2010-08-24 | Headwaters Incorporated | Method and system for reducing ammonia slip after selective reduction of NOx |
-
2012
- 2012-01-20 CN CN 201210018423 patent/CN102553421B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101668929A (en) * | 2006-12-22 | 2010-03-10 | 卡万塔能源公司 | Dynamic control of selective non-catalytic reduction system for semi-batch-fed stoker-based municipal solid waste combustion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102553421A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102553421B (en) | Denitration method in SNCR (selective non catalytic reduction) furnace for exactly realizing temperature window tracking | |
| Choi et al. | Process design and optimization of MEA-based CO2 capture processes for non-power industries | |
| CN103148473B (en) | Optimal operation method and system for utility boiler based on CO | |
| CN203870081U (en) | SCR low-temperature denitration pilot test device | |
| CN204460275U (en) | A kind of combustion energy saving safety control system | |
| CN104676620A (en) | Flue gas processing system and flue gas processing method capable of enabling low-low temperature electrostatic precipitation to be combined with water pollination type GGH (Gas Gas Heater) | |
| CN104190253A (en) | Coke oven flue gas SCR denitration system | |
| CN102980194A (en) | Method for garbage low-nitrogen and low-dioxin grate incineration and device of method for garbage low-nitrogen and low-dioxin grate incineration | |
| CN106402905A (en) | Staged-combustion torch head device | |
| CN104596771B (en) | Discharging type diesel engine exhaust simulation system with power adjusting assisting device | |
| CN109723556B (en) | SCR and spraying-based gas turbine set efficiency improvement control system and control method | |
| CN104020737A (en) | Slurry circulating pump RB control method of thermal power generating unit | |
| CN103405988A (en) | Smoke cooling system and method | |
| TWM448642U (en) | Exhaust gas backflow and reuse control system for combustion apparatus | |
| CN106178806B (en) | A kind of utilization method of flue gases of cock oven waste heat | |
| CN108518698A (en) | Smoke catalytic recycling device | |
| CN207688113U (en) | Multifunction energy-saving heating device | |
| CN205137432U (en) | Buggy industrial boiler | |
| CN204358691U (en) | Waste heat boiler | |
| CN103453526A (en) | Combustor with automatic air quantity control function | |
| CN100528277C (en) | Apparatus for preventing flue-gas from being washed down for wet chimney of flue-gas desulphurization equipment | |
| CN203418078U (en) | Regenerative furnace provided with control system | |
| CN202118942U (en) | Device for automatically adjusting components of smoke on water cooled wall of lateral wall of front-back-wall hedging combustion boiler | |
| CN106843123A (en) | The denitration automatic control system of heat accumulating gas boiler | |
| CN207438571U (en) | Multi-functional environment-protection heating unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 200125, 7C-18, building 7, building 3409, Dongfang Road, Shanghai, Pudong New Area Applicant after: Shanghai Techspray Engineering Co., Ltd. Address before: 200125, 7C-18, building 7, building 3409, Dongfang Road, Shanghai, Pudong New Area Applicant before: Shanghai Techspray Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHANGHAI TECHSPRAY ENVIRONMENTAL PROTECTION COMPLETE EQUIPMENT CO., LTD. TO: SHANGHAI TECHSPRAY ENGINEERING CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 200125, room 3, floor 3, building 3601, 305 Dongfang Road, Shanghai, Pudong New Area Patentee after: Shanghai Taixin environmental engineering Limited by Share Ltd Address before: 200125, 7C-18, building 7, building 3409, Dongfang Road, Shanghai, Pudong New Area Patentee before: Shanghai Techspray Engineering Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200125, room 3, floor 3, building 3601, 305 Dongfang Road, Shanghai, Pudong New Area Patentee after: Shanghai Taixin Environmental Engineering Co., Ltd Address before: 200125, room 3, floor 3, building 3601, 305 Dongfang Road, Shanghai, Pudong New Area Patentee before: Shanghai Taixin environmental engineering Limited by Share Ltd |