CN102057223A - Method of controlling a combustion facility using a combination of coefficient of resistance and flame front estimation - Google Patents

Method of controlling a combustion facility using a combination of coefficient of resistance and flame front estimation Download PDF

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Publication number
CN102057223A
CN102057223A CN2008801297643A CN200880129764A CN102057223A CN 102057223 A CN102057223 A CN 102057223A CN 2008801297643 A CN2008801297643 A CN 2008801297643A CN 200880129764 A CN200880129764 A CN 200880129764A CN 102057223 A CN102057223 A CN 102057223A
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CN
China
Prior art keywords
flame
resistance coefficient
fuel
fpv
parameter
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.)
Granted
Application number
CN2008801297643A
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Chinese (zh)
Other versions
CN102057223B (en
Inventor
S·N·托姆森
B·E·索伦森
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Babcock and Wilcox Volund AS
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Babcock and Wilcox Volund AS
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Publication date
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Publication of CN102057223A publication Critical patent/CN102057223A/en
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Publication of CN102057223B publication Critical patent/CN102057223B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/102—Arrangement of sensing devices for pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/55—Controlling; Monitoring or measuring
    • F23G2900/55009—Controlling stoker grate speed or vibrations for waste movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/36—PID signal processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/20—Camera viewing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/18—Incinerating apparatus

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)

Abstract

The present invention relates to a method of controlling at least one parameter (1,2) of a combustion facility, said combustion facility comprising an in-feed system feeding fuel to a number of moving grates on which the fuel is fed forward and subjected to successive drying, ignition, combustion and outbuming, primary air for the combustion being supplied from beneath the grates and through the layer of fuel on the grates, said method comprising - calculating a coefficient of resistance (Zeta pv) for the air flow through the grates and fuel, - controlling the at least one parameter (1,2) of the combustion facility based on the coefficient of resistance (Zeta pv), and - providing an estimation of the position (Fpv) of the flame front by image analysis of a camera image of the combustion zone and - using said estimated position (Fpv) of the flame front to provide a correction of the control of the at least one parameter (1,2) based on the coefficient of resistance (Zeta pv).

Description

The method of combustion apparatus is controlled in a kind of combination that utilizes resistance coefficient and flamjne front to estimate
Technical field
The present invention relates to a kind of control method of in comprising the combustion apparatus of feed system, using, wherein feed system is supplied with a plurality of mobile fire grates with fuel, fuel is supplied with forward and experience drying, igniting, burning and after-flame successively on mobile fire grate, and the primary air that is used to burn provides below fire grate and passes fuel bed on the fire grate.
Background technology
In this combustion apparatus, known resistance coefficient based on the air-flow that passes through fire grate and fuel that for example calculates according to bernoulli principle provides the control to feed system and mobile possibly fire grate speed.These class methods can be known from EP955499.
Summary of the invention
The purpose of this invention is to provide a kind of method mentioned above, utilize this method that a kind of more accurate burning control can be provided, and this purpose is realized by the method for described type, according to the present invention, this method provides control to proofread and correct by utilizing the flame front location of estimating based on resistance coefficient, and the flame front location of described estimation is provided by the graphical analysis of the camera image of combustion zone.By this way, when detecting flame front location and depart from its optimum position, can proofread and correct the setting value or the control signal of resistance coefficient controller.
Description of drawings
In the following detailed description part of this specification, the exemplary embodiment of the method according to this invention shown in will be explained in more detail the present invention, wherein with reference to the accompanying drawings
Fig. 1 schematically represents a kind of configuration of supply control system, and wherein the setting value of resistance coefficient controller is additionally proofreaied and correct (feedforward) by the flamjne front control signal.
Fig. 2 schematically represents a kind of configuration of supply control system, and wherein the setting value of resistance coefficient controller is by flamjne front control signal convergent-divergent (scaling), and
Fig. 3 schematically represents a kind of configuration of supply control system, wherein the flamjne front control signal setting value of convergent-divergent (gain scaling) charging control system directly.
The specific embodiment
Each the parameter control device that comprises two parameters that are used for combustion apparatus in the control system shown in the accompanying drawing 1-3, promptly two parameters are respectively the ignitable fuel supply are entered the speed 1 of combustion chamber and transmitting speed 2 on continuous first incineration grate.In two controllers each is all represented by the PID controller, and they are mainly controlled according to the setting value 3 of fire grate speed, steam/energy production that fire grate speed needs based on factory.Resistance coefficient ζ by means of the top, combustion zone carries out for the correction of the fire grate speed setting value 3 of two controllers.Resistance coefficient ζ is calculated in the combustion zone, for example, use the incineration grate of combination and the measurement or the like of the temperature of the measurement of measurement, the pressure of measurement, the air-flow of the pressure on the opposite side of combustible material layer and combustion air on it.The calculating of resistance coefficient ζ can be based on several different equations, for example
Δp = 1 / 2 · ζ · ρ · v x ⇔ ζ = 2 · Δp ρ · v x Wherein
Δ p=fire grate and its are gone up the pressure loss above the fuel
ζ=resistance coefficient
ρ=medium (combustion air) density
The v=medium velocity
X=depends on that stream is the index of laminar flow or turbulent flow,
Perhaps
ζ 1 = R · T P · Δp V Wherein
ζ 1=resistance coefficient
The gas constant of R=air (=287.1J/ (kg*K))
T=air themperature (K)
P=air pressure (Pa)
Δ p=fire grate and its are gone up the pressure loss above the fuel
V=volume of air flow (m 3/ s)
Perhaps, provide with fire grate on any other dependent equation of the fuel depth resistance coefficient ζ pv relevant with density.
The resistance coefficient ζ pv of the top, combustion zone of so calculating provides the good indication of speed 1, the 2 required correction of feed system, because in fact resistance coefficient ζ pv provides the good estimation of the thickness of waste material layer in the combustion zone.
Yet according to the present invention, the setting value ζ sp of resistance coefficient may be too high or too low and need further to proofread and correct.According to the present invention, to need providing by the estimated position Fpv that uses crest of flame of proofreading and correct, described estimation is provided by the graphical analysis of combustion zone camera image.In a preferred embodiment, camera is the R-G-B image camera, yet, also can use the camera of other types, for example infrared camera.
In exemplary embodiment shown in Figure 1, the crest of flame controller is equipped with the setting value Fsp of crest of flame and the estimated value Fpv of crest of flame position, it is provided for the PID controller and will be added to the setting value ζ sp of resistance coefficient controller from the output of the described PID controller of crest of flame, so that proofread and correct charging rate 1 and the control of transmitting speed 2 on continuous first incineration grate that controlling value and correction of a final proof enter the ignitable fuel of combustion chamber.
Correspondingly, accompanying drawing 2 illustrates corresponding system, yet wherein, the output valve of crest of flame controller multiply by the setting value ζ sp of resistance coefficient controller.
In addition, accompanying drawing 3 illustrates alternative arrangements, wherein, be respectively applied for control and ignitable fuel is supplied with entered the speed 1 of combustion chamber and before the PID controller of the speed 2 of transporting on continuous first incineration grate being provided for, the output signal of crest of flame controller multiply by fire grate speed setting value 3, and mode multiply by its result as the resistance coefficient controller output signal.

Claims (6)

1. at least one parameter (1 of controlling combustion apparatus, 2) method, described combustion apparatus comprises: the feed system of fuel being supplied with a plurality of mobile fire grates, fuel is supplied with also experience drying, igniting, burning and after-flame successively forward on mobile fire grate, provide from fire grate below and pass the primary air that is used to burn of fuel bed on the fire grate, described method comprises
-calculate resistance coefficient (ζ pv) by the air-flow of fire grate and fuel,
-based at least one parameter (1,2) of resistance coefficient (ζ pv) control combustion apparatus and
-by the graphical analysis of combustion zone camera image provide the crest of flame position estimation (Fpv) and
-use the described estimated position (Fpv) of crest of flame to provide based on resistance coefficient (ζ pv) control of at least one parameter (1,2) is proofreaied and correct.
2. method according to claim 1, wherein, at least one parameter comprises the speed (1) of feed system.
3. method according to claim 1 and 2, wherein at least one parameter comprises that at least one moves the speed of fire grate (2).
4. according to the described method of aforementioned each claim, wherein (Fig. 1) carried out in the feedforward introducing of the estimated position (Fpv) by crest of flame is proofreaied and correct in control based on resistance coefficient (ζ pv).
5. according to the described method of aforementioned each claim, wherein (Fig. 2) carried out in the convergent-divergent introducing of the estimated position (Fpv) by crest of flame is proofreaied and correct in control based on resistance coefficient (ζ pv).
6. according to the described method of aforementioned each claim, wherein (Fig. 3) carried out in the gain convergent-divergent introducing of the estimated position (Fpv) by crest of flame is proofreaied and correct in control based on resistance coefficient (ζ pv).
CN2008801297643A 2008-06-10 2008-06-10 Method of controlling a combustion facility using a combination of coefficient of resistance and flame front estimation Active CN102057223B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2008/001489 WO2009150480A1 (en) 2008-06-10 2008-06-10 Method of controlling a combustion facility using a combination of coefficient of resistance and flame front estimation

Publications (2)

Publication Number Publication Date
CN102057223A true CN102057223A (en) 2011-05-11
CN102057223B CN102057223B (en) 2013-06-12

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Country Status (10)

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US (1) US20110123939A1 (en)
EP (1) EP2324288B1 (en)
JP (1) JP5449335B2 (en)
KR (1) KR101531738B1 (en)
CN (1) CN102057223B (en)
CA (1) CA2725490C (en)
DK (1) DK2324288T3 (en)
ES (1) ES2704012T3 (en)
PL (1) PL2324288T3 (en)
WO (1) WO2009150480A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015155565A1 (en) * 2014-04-07 2015-10-15 Babcock & Wilcox Vølund A/S Regulation of incineration in dependence of fluctuations in the price on electricity
JP6723864B2 (en) * 2016-08-01 2020-07-15 株式会社タクマ Combustion control device equipped with a garbage moving speed detection function

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591919A (en) * 1982-06-24 1984-01-07 Mitsubishi Heavy Ind Ltd Control method of combustion
JPS59195012A (en) * 1983-04-20 1984-11-06 Hitachi Ltd Combustion control method
DE3904272C3 (en) * 1989-02-14 1998-01-08 Steinmueller Gmbh L & C Method for detecting the radiation emanating from at least two spatially separate locations of at least one combustion zone on a grate and device for detecting such radiation
JPH07111247B2 (en) * 1989-11-10 1995-11-29 石川島播磨重工業株式会社 Waste treatment method
JPH04371712A (en) * 1991-06-21 1992-12-24 Mitsubishi Heavy Ind Ltd Combustion control method for garbage incinerator
DE4344906C2 (en) * 1993-12-29 1997-04-24 Martin Umwelt & Energietech Process for controlling individual or all factors influencing the combustion on a grate
JP3099229B2 (en) * 1997-07-16 2000-10-16 住友重機械工業株式会社 Waste transfer control system for horizontal stoker type waste incinerator
JP3763963B2 (en) * 1998-03-16 2006-04-05 住友重機械工業株式会社 Stoker temperature control device for waste incinerator and combustion control device for waste incinerator equipped with the same
DE19820038C2 (en) * 1998-05-05 2000-03-23 Martin Umwelt & Energietech Process for controlling the fire performance of incinerators
EP1726876B1 (en) * 2005-05-27 2015-05-06 Takuma Co., Ltd. Improved method of combusting solid waste
ES2473592T3 (en) * 2006-09-30 2014-07-07 Steag Powitec Gmbh Procedure for the regulation of a combustion process

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Publication number Publication date
CA2725490C (en) 2015-11-24
WO2009150480A1 (en) 2009-12-17
CA2725490A1 (en) 2009-12-17
EP2324288B1 (en) 2018-11-21
KR101531738B1 (en) 2015-06-25
CN102057223B (en) 2013-06-12
US20110123939A1 (en) 2011-05-26
JP5449335B2 (en) 2014-03-19
PL2324288T3 (en) 2019-05-31
KR20110026470A (en) 2011-03-15
JP2011523022A (en) 2011-08-04
ES2704012T3 (en) 2019-03-13
DK2324288T3 (en) 2018-12-17
EP2324288A1 (en) 2011-05-25

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