EP2310746A2 - Denitrification plant - Google Patents
Denitrification plantInfo
- Publication number
- EP2310746A2 EP2310746A2 EP08874969A EP08874969A EP2310746A2 EP 2310746 A2 EP2310746 A2 EP 2310746A2 EP 08874969 A EP08874969 A EP 08874969A EP 08874969 A EP08874969 A EP 08874969A EP 2310746 A2 EP2310746 A2 EP 2310746A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam generator
- control device
- temperature distribution
- determining
- burner
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
- F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
- F23J2215/101—Nitrous oxide (N2O)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/20—Non-catalytic reduction devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/14—Ambient temperature around burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
- F23N2229/08—Flame sensors detecting flame flicker
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2900/00—Special features of, or arrangements for controlling combustion
- F23N2900/05006—Controlling systems using neuronal networks
Definitions
- the invention relates to a device for denitrification of flue gases of a fossil-fired steam generator, in particular steam generator boiler of a power plant, with means for injecting an effective in a predetermined temperature range reagent in the hot combustion gases containing interior of the steam generator.
- the object of the invention is to improve the possibilities of using the SNCR method, in particular for large steam generator units of power plants.
- a device of the aforementioned type which is characterized in that the injection devices comprise a plurality of spatially distributed Bndüsungslanzen and a control device for determining the respective temperature distribution in the interior and for the selection of blown Bndüsungslanzen suitable for the temperature distribution ,
- a stable denitrification is achieved by this invention solution regardless of the operating conditions of the steam generator, in particular regardless of the load and the type of fuel at any time.
- the ashes of residues of unused reagent-free ashes can be used without restriction.
- control device could sense the spatial temperature distribution in the interior of the boiler
- the control device is provided in a preferred embodiment of the invention for the indirect determination of the temperature distribution based on at least one operating parameter of the steam generator that determines the temperature distribution.
- an operating parameter can be determined with significantly less effort than required by the direct measurement of the temperature at several points in the hot combustion gases.
- control device can be provided for the indirect determination of the temperature distribution on the basis of the load of the steam generator, the type of fuel used and / or at least one parameter characteristic of the burner flames of the steam generator.
- the control device may have a memory in which the respective temperature distributions are stored in a table in association with the relevant operating parameters. From a measured operating parameter value, the control device can thus indirectly determine the associated temperature distribution.
- the control device comprises an image sensor which at least partially detects the burner surfaces and an image evaluation device.
- the image sensor detects a flickering region of a burner flame or of a plurality of burner flames
- the image-determining device is preferably provided for determining the flicker frequency as the operating parameter determining the respective temperature distribution.
- the control device is provided for determining the ringer frequency as the sole operating parameter, the control device optionally determining the mean value of the flicker frequencies over all burner flames of the steam generator.
- the control device expediently comprises an adaptive memory system provided for expanding the look-up tables, with the use of neural networks in particular being considered here.
- FIG. 1 shows a schematic representation of a steam generator equipped with a device according to the invention
- FIG. 2 shows a diagram explaining the function of the device of FIG.
- a in Fig. 1 fragmentary shown, equipped with a Entstickungsvo ⁇ ichtung steam boiler 1 has a top burner level 2 with inlets 3 and 4 for a fuel mixture or combustion air on.
- a total of four inlets 3 and four inlets 4 are provided in the burner level 2, which are diametrically opposed in pairs.
- the tubes to be evaporated water pipes are not shown for simplicity, provided in three different levels 7 to 9 Eind ⁇ slanzen 10 for blowing a brought on a line 1 1 reagent.
- the reagent is preferably ammonia-water or urea.
- All Eindüslanzen 10 have a controllable check valve 12.
- a control device comprises a central control unit 13, by means of which each individual one of the blocking valves 12 can be activated and which is connected to an image sensor 14, which detects a cut-out section 15 of the burner flame.
- the said reagent is constantly blown into the hot combustion gases flowing through the interior 18 of the steam generator 1 via the fuel lances 10, resulting in a reduction of the nitrogen oxides contained in the combustion gases.
- the reagent is effective only in a temperature range between T2 «1 100 0 C and Tl» 90O 0 C.
- the control unit 13 therefore selects by appropriate control of the check valves 12 from the plurality of total existing Eindüslanzen 10 only those that blow in a region of the interior 18, in which the temperature of the combustion gases between Tl and T2. In order to be able to make this selection, the control unit 13 determines the respective spatial distribution of the temperature T in the interior 18 of the steam generator boiler 1.
- the image sensor 14 acquires an image section 15 in which the burner film flickers.
- the flicker frequency depends on the operating conditions, in particular the load and / or the type of fuel.
- the image evaluation device in the control unit 13 determines the respective flicker frequency from the signal of the image sensor 14.
- the control unit 13 assigns the corresponding temperature distribution to this frequency by means of the stored tables and, on the basis of the determined temperature distribution, selects the respective fuel lances 10 suitable for blowing.
- a height range between h 2 and h 1 results for the effective temperature range T 1 and T 2 so that the injection lances 10 of only the level 8 are selected by the control unit 13.
- the image sensor 14 corresponding image sensors can be accommodated in each burner level.
- the control unit 13 determines the average value from all measured flicker frequencies and then the relevant temperature distribution based on the mean value.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Regulation And Control Of Combustion (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008036099.6A DE102008036099B4 (en) | 2008-08-04 | 2008-08-04 | denitrification |
PCT/EP2008/008610 WO2010015272A2 (en) | 2008-08-04 | 2008-10-11 | Denitrification plant |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2310746A2 true EP2310746A2 (en) | 2011-04-20 |
Family
ID=40482026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08874969A Withdrawn EP2310746A2 (en) | 2008-08-04 | 2008-10-11 | Denitrification plant |
Country Status (5)
Country | Link |
---|---|
US (1) | US8673221B2 (en) |
EP (1) | EP2310746A2 (en) |
DE (1) | DE102008036099B4 (en) |
MY (1) | MY158227A (en) |
WO (1) | WO2010015272A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5337077B2 (en) * | 2010-02-26 | 2013-11-06 | 三菱重工業株式会社 | Denitration device control device, denitration device equipped with the same, boiler plant equipped with the same, and denitration device control method |
DE102010064277B4 (en) | 2010-12-28 | 2024-03-14 | Robert Bosch Gmbh | Safety feature in a driver assistance system with a rear view camera |
DE102011105419B4 (en) * | 2011-06-09 | 2015-04-16 | Mehldau & Steinfath Umwelttechnik Gmbh | Process for the reduction of nitrogen oxides |
DE102017001025B4 (en) | 2017-02-03 | 2020-10-08 | Rs Rittel Gmbh | Incinerator and waste gas treatment process |
PL233450B1 (en) | 2017-07-18 | 2019-10-31 | Ecoenergia Spolka Z Ograniczona Odpowiedzialnoscia | Method and installation for selective, non-catalytic reduction of nitrogen oxides in stoker-fired boilers |
CN109395561A (en) * | 2018-11-18 | 2019-03-01 | 湖南冠颜料有限公司 | A kind of crystal seed tail gas treatment device and processing method |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0497762A4 (en) | 1987-03-06 | 1993-04-07 | Fuel Tech, Inc. | System for the efficient reduction of nitrogen oxides in an effluent |
CH675623A5 (en) * | 1988-09-27 | 1990-10-15 | Von Roll Ag | |
DE3935400C1 (en) * | 1989-10-24 | 1990-08-09 | Martin Gmbh Fuer Umwelt- Und Energietechnik, 8000 Muenchen, De | |
DE4130348A1 (en) * | 1991-09-12 | 1993-03-18 | Evt Energie & Verfahrenstech | Reductant injection into flue gas stream - using regulated lances arranged in several planes |
US5249954A (en) * | 1992-07-07 | 1993-10-05 | Electric Power Research Institute, Inc. | Integrated imaging sensor/neural network controller for combustion systems |
DE4231777C2 (en) * | 1992-09-23 | 1995-11-30 | Fraunhofer Ges Forschung | Process for spectral analysis of a technical flame with a flickering frequency by optical emission or absorption spectroscopy and arrangement for carrying out the process |
US5478542A (en) * | 1992-11-23 | 1995-12-26 | Nalco Fuel Tech | Process for minimizing pollutant concentrations in combustion gases |
US5326536A (en) * | 1993-04-30 | 1994-07-05 | The Babcock & Wilcox Company | Apparatus for injecting NOx inhibiting liquid reagent into the flue gas of a boiler in response to a sensed temperature |
WO1995025931A1 (en) | 1994-03-21 | 1995-09-28 | Techform Engineering Ag | Method and device for introducing a liquid or gaseous treatment medium into a flue gas flow |
DE19509412C2 (en) * | 1995-03-15 | 1997-01-30 | Siemens Ag | Method and device for controlling the firing of a steam generator system |
DE19710206A1 (en) * | 1997-03-12 | 1998-09-17 | Siemens Ag | Method and device for combustion analysis and flame monitoring in a combustion chamber |
US6248736B1 (en) | 1999-01-08 | 2001-06-19 | Pharmacia & Upjohn Company | 4-oxo-1,4-dihydro-3-quinolinecarboxamides as antiviral agents |
US20040052693A1 (en) * | 2002-09-18 | 2004-03-18 | Crane Samuel N. | Apparatus and method for removing NOx from the exhaust gas of an internal combustion engine |
KR100597961B1 (en) * | 2003-04-24 | 2006-07-06 | 한국남부발전 주식회사 | Cleaning Method of NO2 Visible Gas from Stationary Sources |
US8353698B2 (en) * | 2003-06-13 | 2013-01-15 | Nalco Mobotec, Inc. | Co-axial injection system |
-
2008
- 2008-08-04 DE DE102008036099.6A patent/DE102008036099B4/en not_active Expired - Fee Related
- 2008-10-11 WO PCT/EP2008/008610 patent/WO2010015272A2/en active Application Filing
- 2008-10-11 EP EP08874969A patent/EP2310746A2/en not_active Withdrawn
- 2008-10-11 US US13/057,484 patent/US8673221B2/en not_active Expired - Fee Related
- 2008-10-11 MY MYPI2011000528A patent/MY158227A/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
DE102008036099A1 (en) | 2010-02-11 |
US20110150709A1 (en) | 2011-06-23 |
WO2010015272A3 (en) | 2010-07-01 |
MY158227A (en) | 2016-09-15 |
WO2010015272A2 (en) | 2010-02-11 |
US8673221B2 (en) | 2014-03-18 |
DE102008036099B4 (en) | 2014-02-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20110302 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: STEAG POWER SAAR GMBH |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: STEAG POWER SAAR GMBH |
|
17Q | First examination report despatched |
Effective date: 20151218 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: STEAG ENERGY SERVICES GMBH |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20180919 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20190130 |