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US20110287372A1 - Method and Device for Monitoring the Combustion Process in a Power Station on the Basis of an Actual Concentration Distribution of a Material - Google Patents

Method and Device for Monitoring the Combustion Process in a Power Station on the Basis of an Actual Concentration Distribution of a Material Download PDF

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Publication number
US20110287372A1
US20110287372A1 US13/128,475 US200913128475A US2011287372A1 US 20110287372 A1 US20110287372 A1 US 20110287372A1 US 200913128475 A US200913128475 A US 200913128475A US 2011287372 A1 US2011287372 A1 US 2011287372A1
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US
United States
Prior art keywords
combustion chamber
fuel
measuring
concentration distribution
conclusions
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.)
Abandoned
Application number
US13/128,475
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English (en)
Inventor
Bernhard Meerbeck
Rainer Speh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEERBECK, BERNHARD, SPEH, RAINER
Publication of US20110287372A1 publication Critical patent/US20110287372A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • 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
    • F23D—BURNERS
    • F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
    • 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

Definitions

  • the invention relates to a method for monitoring the combustion in a combustion chamber in a power station, with measurement of an actual concentration distribution of a substance or of an actual temperature distribution in the combustion chamber. Furthermore, the invention relates to a device for monitoring the combustion in a combustion chamber in a power station, using a device for measuring an actual concentration distribution of a substance or an actual temperature distribution in the combustion chamber.
  • the fundamental objective is to monitor the combustion which is taking place in a combustion chamber in the power station, for example a boiler with a base area of 10 meters by 10 meters, over as wide an area as possible, to enable the variables required for optimizing the combustion process to be derived therefrom.
  • absorption spectroscopy is a known method.
  • acoustic pyrometry is also known. Using absorption spectroscopy or acoustic pyrometry, it is only possible to measure mean values along a line in the boiler or combustion chamber.
  • a known method is the CAT measurement technique, Computer Aided Tomography.
  • An object of the invention is to enable more extensive monitoring of the combustion in a power station, in order thereby to supply the basis for optimizing the combustion process.
  • a method in accordance with the invention for monitoring the combustion in a combustion chamber in a power station includes the steps: measure an actual concentration distribution of a substance in the combustion chamber, and draw conclusions about the nature of the fuel on the basis of the measured actual concentration distribution.
  • a method in accordance with the invention for monitoring the combustion in a combustion chamber in a power station includes the steps: measure an actual temperature distribution in the combustion chamber and draw conclusions about the nature of the fuel on the basis of the measured actual temperature distribution.
  • a first form of embodiment of a device in accordance with the invention for monitoring the combustion in a combustion chamber in a power station includes equipment for measuring an actual concentration distribution of a substance in the combustion chamber and equipment for drawing conclusions about the nature of the fuel on the basis of the measured actual concentration distribution.
  • equipment in accordance with the invention for monitoring the combustion in a combustion chamber in a power station includes equipment for measuring an actual temperature distribution in the combustion chamber and equipment for drawing conclusions about the nature of the fuel on the basis of the measured actual temperature distribution.
  • the basic idea underlying the invention is that for fuels of a known nature, in particular known types of coal, it is possible to determine characteristic distributions, in particular two-dimensional distributions, for the concentration of at least one substance in the waste gas and/or for the temperature in the combustion chamber. By reference to such characteristic distributions, it is possible to recognize the nature of the fuel and in particular of the type of coal. After this, the recognized nature or type can then be advantageously taken into account in regulating the combustion and in particular in the automatic switchover of control parameters, such as for example the excess air, for the purpose of reducing the emission of pollutant substances and for reducing the fuel consumption.
  • the term “substance” refers generally to any type of combustion product, in particular in the form of gas as a component of the waste gas.
  • fuel is to be understood as material of any nature which comes to be burned in power stations.
  • coal-fired power stations which are particularly relevant in the present case, these are coals of different natures or different types of coal.
  • the drawing of conclusions about the nature of the fuel takes place at the same time as the measurement. That is, it is not imperative to use a sequential procedure in the measurement of concentrations and the temperature and the subsequent drawing of conclusions about the nature of the fuel, but these steps can also take place simultaneously, so that the conclusions drawn in accordance with the invention can be produced particularly quickly and particularly informatively.
  • FIG. 1 an exemplary embodiment of the inventive device
  • FIG. 2 an exemplary embodiment of the inventive method.
  • FIG. 1 shows a combustion chamber 10 in a coal-fired power station, which is not shown further here, wherein a coal-fired furnace burns when the coal-fired power station is in operation.
  • the combustion chamber 10 then has in it the coal fuel with its associated combustion gases, several flames 11 and waste gases.
  • two measurement planes 12 and 14 which are horizontal and parallel to one another, on the peripheral edges of each of which are several measuring instruments 16 , spaced apart from each other.
  • two of the measuring instruments 16 permit measurement along a line in the associated measurement plane, 12 or 14 as applicable, wherein the concentration of the substances O 2 (oxygen) and CO (carbon monoxide) can be measured with the help of the measuring instruments 16 and an associated analysis device 18 .
  • the measuring instruments 16 and the analysis device 18 it is possible to determine the temperature distribution in the associated measurement plane, 12 or 14 as applicable.
  • the measurement is based on a combination of measurement technology and CAT calculation.
  • the analysis device 18 is coupled operationally via a data bus 20 to an optimization device 22 , an operating device 24 , and management equipment or control and instrumentation equipment 26 .
  • an optimization device 22 Via the operating device 24 , the actual concentration distributions and temperature distributions in the planes 12 and 14 , measured by the analysis device 18 , can be used to enable the optimization device 22 to draw conclusions from them about the nature of the fuel currently burning in the combustion chamber 10 , in the present case the type of coal which is there.
  • the nature of the fuel is determined in order to optimize the flames 11 burning in the combustion chamber 10 , in particular in respect of a low emission of NO x (oxides of Nitrogen).
  • the optimization device 22 uses stored characteristic samples of the concentrations of the substances cited in the waste gas and of the temperature, which have been determined using reference fuels and stored in the optimization device 22 . The actual measured distributions of the concentration and the temperature are compared with these samples and matches are recognized by a comparison of this type.
  • the associated method is illustrated in FIG. 2 . It includes the step 28 of measuring in the plane 12 the concentration distribution, e.g. of the substances O 2 and CO, and the temperature distribution. In step 30 the concentration distribution, for example of the substances O 2 and CO, in the plane 14 and the temperature distribution there, are measured at the same time. In step 32 the concentration distribution and the temperature distribution in the planes 12 and 14 are, as explained above, analyzed in such a way that conclusions can be drawn about the nature of the fuel in the combustion chamber 10 .
  • optimization of the combustion is then effected in a step 34 , for example by a change in the air layering and/or a section by section change in the excess air.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
US13/128,475 2008-11-11 2009-11-10 Method and Device for Monitoring the Combustion Process in a Power Station on the Basis of an Actual Concentration Distribution of a Material Abandoned US20110287372A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008056674A DE102008056674A1 (de) 2008-11-11 2008-11-11 Verfahren und Vorrichtung zum Überwachen der Verbrennung eines Kraftwerks auf der Grundlage einer realen Konzentrationsverteilung eines Stoffes
DE102008056674.8 2008-11-11
PCT/EP2009/064887 WO2010055025A1 (fr) 2008-11-11 2009-11-10 Procédé et dispositif de surveillance de la combustion dans une centrale sur la base de la distribution réelle de la concentration d'une substance

Publications (1)

Publication Number Publication Date
US20110287372A1 true US20110287372A1 (en) 2011-11-24

Family

ID=42084487

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/128,475 Abandoned US20110287372A1 (en) 2008-11-11 2009-11-10 Method and Device for Monitoring the Combustion Process in a Power Station on the Basis of an Actual Concentration Distribution of a Material

Country Status (5)

Country Link
US (1) US20110287372A1 (fr)
EP (1) EP2347179B1 (fr)
CN (1) CN102272523B (fr)
DE (1) DE102008056674A1 (fr)
WO (1) WO2010055025A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120457A1 (it) * 2012-05-25 2013-11-26 Eltek Spa Dispositivo di controllo per rubinetti di gas
US9448201B2 (en) * 2013-03-29 2016-09-20 Rosemount Analytical, Inc. In situ probe with improved diagnostics and compensation

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134738A (en) * 1978-04-10 1979-01-16 Foster Wheeler Energy Corporation Automated poking system for coal gasifier
US5010827A (en) * 1990-05-08 1991-04-30 Wyerehaeuser Company Apparatus for detecting carryover particles in the interior of a furnace
US5367470A (en) * 1989-12-14 1994-11-22 Exergetics Systems, Inc. Method for fuel flow determination and improving thermal efficiency in a fossil-fired power plant
US5790420A (en) * 1989-12-14 1998-08-04 Lang; Fred D. Methods and systems for improving thermal efficiency, determining effluent flows and for determining fuel mass flow rates of a fossil fuel fired system
US5971747A (en) * 1996-06-21 1999-10-26 Lemelson; Jerome H. Automatically optimized combustion control
US6138588A (en) * 1999-08-10 2000-10-31 Abb Alstom Power Inc. Method of operating a coal-fired furnace to control the flow of combustion products
US6227842B1 (en) * 1998-12-30 2001-05-08 Jerome H. Lemelson Automatically optimized combustion control
US20010014436A1 (en) * 1999-10-25 2001-08-16 Lemelson Jerome H. Automatically optimized combustion control
US6522994B1 (en) * 1998-03-24 2003-02-18 Exergetic Systems Llc Input/loss method for determining fuel flow, chemistry, heating value and performance of a fossil-fired system
US6551094B2 (en) * 1998-09-11 2003-04-22 Siemens Aktiengesellschaft Method and device for determining a soot charge in a combustion chamber
US20040044423A1 (en) * 2001-03-02 2004-03-04 Powitec Intelligent Technologies Gmbh Method for controlling a thermodynamic process, in a particular a combustion process
US20050177340A1 (en) * 2004-02-09 2005-08-11 General Electric Company Method and system for real time reporting of boiler adjustment using emission sensor data mapping
US7039555B2 (en) * 1998-03-24 2006-05-02 Exergetic Systems Llc Method for detecting heat exchanger tube failures and their location when using input/loss performance monitoring of a recovery boiler
US7194382B2 (en) * 2004-02-06 2007-03-20 Georgia Tech Research Corporation Systems and methods for detection of combustor stability margin
US7231078B2 (en) * 2002-08-16 2007-06-12 Powitec Intelligent Technologies Gmbh Method for monitoring a thermodynamic process
US20080011109A1 (en) * 2005-07-12 2008-01-17 John Frank Bourgein Method and system for dynamic sensing, presentation and control of combustion boiler conditions
US7328132B2 (en) * 2006-03-17 2008-02-05 Exergetic Systems, Llc Input/Loss Method using the genetics of fossil fuels for determining fuel chemistry, calorific value and performance of a fossil-fired power plant

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509412C2 (de) * 1995-03-15 1997-01-30 Siemens Ag Verfahren und Vorrichtung zur Feuerungsregelung einer Dampferzeugeranlage
DE19532539A1 (de) * 1995-09-04 1997-03-20 Heinz Prof Dr Ing Spliethoff Verfahren zur Überwachung einer Kraftwerksleistungsfeuerung
WO1999039137A1 (fr) * 1998-01-30 1999-08-05 Siemens Aktiengesellschaft Procede et dispositif pour faire fonctionner une installation de combustion
CA2599160A1 (fr) * 2005-02-25 2006-08-31 Zhen Jia Procede et systeme de combustion
WO2007062019A2 (fr) * 2005-11-22 2007-05-31 Clean Combustion Technologies Llc Procede et systeme de combustion
US7865271B2 (en) * 2006-11-02 2011-01-04 General Electric Company Methods and systems to increase efficiency and reduce fouling in coal-fired power plants

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134738A (en) * 1978-04-10 1979-01-16 Foster Wheeler Energy Corporation Automated poking system for coal gasifier
US5367470A (en) * 1989-12-14 1994-11-22 Exergetics Systems, Inc. Method for fuel flow determination and improving thermal efficiency in a fossil-fired power plant
US5790420A (en) * 1989-12-14 1998-08-04 Lang; Fred D. Methods and systems for improving thermal efficiency, determining effluent flows and for determining fuel mass flow rates of a fossil fuel fired system
US5010827A (en) * 1990-05-08 1991-04-30 Wyerehaeuser Company Apparatus for detecting carryover particles in the interior of a furnace
US5971747A (en) * 1996-06-21 1999-10-26 Lemelson; Jerome H. Automatically optimized combustion control
US6522994B1 (en) * 1998-03-24 2003-02-18 Exergetic Systems Llc Input/loss method for determining fuel flow, chemistry, heating value and performance of a fossil-fired system
US7039555B2 (en) * 1998-03-24 2006-05-02 Exergetic Systems Llc Method for detecting heat exchanger tube failures and their location when using input/loss performance monitoring of a recovery boiler
US6551094B2 (en) * 1998-09-11 2003-04-22 Siemens Aktiengesellschaft Method and device for determining a soot charge in a combustion chamber
US6227842B1 (en) * 1998-12-30 2001-05-08 Jerome H. Lemelson Automatically optimized combustion control
US6138588A (en) * 1999-08-10 2000-10-31 Abb Alstom Power Inc. Method of operating a coal-fired furnace to control the flow of combustion products
US20010014436A1 (en) * 1999-10-25 2001-08-16 Lemelson Jerome H. Automatically optimized combustion control
US20040044423A1 (en) * 2001-03-02 2004-03-04 Powitec Intelligent Technologies Gmbh Method for controlling a thermodynamic process, in a particular a combustion process
US7231078B2 (en) * 2002-08-16 2007-06-12 Powitec Intelligent Technologies Gmbh Method for monitoring a thermodynamic process
US7194382B2 (en) * 2004-02-06 2007-03-20 Georgia Tech Research Corporation Systems and methods for detection of combustor stability margin
US20050177340A1 (en) * 2004-02-09 2005-08-11 General Electric Company Method and system for real time reporting of boiler adjustment using emission sensor data mapping
US20080011109A1 (en) * 2005-07-12 2008-01-17 John Frank Bourgein Method and system for dynamic sensing, presentation and control of combustion boiler conditions
US7328132B2 (en) * 2006-03-17 2008-02-05 Exergetic Systems, Llc Input/Loss Method using the genetics of fossil fuels for determining fuel chemistry, calorific value and performance of a fossil-fired power plant

Also Published As

Publication number Publication date
WO2010055025A1 (fr) 2010-05-20
EP2347179A1 (fr) 2011-07-27
CN102272523A (zh) 2011-12-07
DE102008056674A1 (de) 2010-05-12
EP2347179B1 (fr) 2017-08-09
CN102272523B (zh) 2015-11-25

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AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MEERBECK, BERNHARD;SPEH, RAINER;SIGNING DATES FROM 20110721 TO 20110801;REEL/FRAME:026708/0598

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION