EP0292706A1 - Verfahren zur Optimierung der Feuerung wasserstoffhaltiger Brennstoffe - Google Patents

Verfahren zur Optimierung der Feuerung wasserstoffhaltiger Brennstoffe Download PDF

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Publication number
EP0292706A1
EP0292706A1 EP88106499A EP88106499A EP0292706A1 EP 0292706 A1 EP0292706 A1 EP 0292706A1 EP 88106499 A EP88106499 A EP 88106499A EP 88106499 A EP88106499 A EP 88106499A EP 0292706 A1 EP0292706 A1 EP 0292706A1
Authority
EP
European Patent Office
Prior art keywords
water vapor
flue gas
combustion
air
hydrogen
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.)
Pending
Application number
EP88106499A
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German (de)
English (en)
French (fr)
Inventor
Margareta Ascherfeld
Walter Fabinski
Wolfgang Nicolai
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun 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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Publication of EP0292706A1 publication Critical patent/EP0292706A1/de
Pending legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a method for optimizing the firing of hydrogen-containing fuels according to the preamble of claim 1.
  • a process is known for optimizing the combustion of carbonaceous fuels which minimizes the proportion of unburned fuel and excess air (patent application P 34 24 946 and publication in VGB-Kraftwerktechnik, issue 2/87, pages 143/149).
  • the carbon monoxide formation point is used for optimization.
  • the oxygen concentration is used to display the efficiency.
  • Hydrogen-containing fuels can also be optimized if they contain carbon, e.g. when burning hydrocarbons.
  • the task is to achieve the optimal setting of the air / fuel ratio with the aim of reducing losses due to unburned components or excess air to a minimum.
  • the water vapor content in the flue gas is used to find the most favorable air / fuel ratio. As a product of the combustion process, this value is particularly suitable for this task.
  • the setting is made for the air / fuel ratio at which the water vapor content in the flue gas is at a maximum. It is particularly advantageous here that the maximum value for the concentration is at the same time a clear measure of the efficiency of the combustion.
  • the process is particularly well suited for the combustion of pure hydrogen.
  • the maximum possible concentration value Kmax / theor is not found in the maximum of the water vapor concentration. a.
  • the maximum of the water vapor concentration Kmax always indicates the optimal, ie complete combustion in the desired operating point ⁇ opt under these circumstances.
  • the concentration value Kmax allows a statement on the efficiency according to the formula
  • FIG. 2 Such a real combustion is shown in FIG. 2.
  • the point of optimal combustion ⁇ opt in real combustion is always in the range ⁇ > 1, ie with excess air. With multiple burner systems there are additional losses since each burner requires its own optimal air / fuel ratio under real conditions. 3 shows this behavior using the example of a two-burner system.
  • the course of the water vapor concentration K over the fuel / air ratio ⁇ i for each burner system is shown in curves 1 and 2 in FIG. 3.
  • the optimal combustion is given at ⁇ 1 opt and ⁇ 2 opt.
  • the cumulative curve K for the water vapor concentration above ⁇ i is flattened and shows a maximum value that is less than the maximum possible concentration value. If the burners are individually set to their optimum ⁇ i opt, then a maximum with steep flanks results for the course of the water vapor concentration in the flue gas over ⁇ .
  • the high value for the maximum water vapor concentration Kmax indicates a high combustion efficiency, as shown in FIG. 4.
  • the firing can be optimized, regardless of the various states of real combustion.
  • the maximum of the water vapor concentration is also the optimum of the combustion, however real the conditions are.
  • the concentration value of the water vapor allows a statement about the efficiency of the combustion.

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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)
EP88106499A 1987-05-23 1988-04-22 Verfahren zur Optimierung der Feuerung wasserstoffhaltiger Brennstoffe Pending EP0292706A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3717503 1987-05-23
DE3717503 1987-05-23
DE3809556 1988-03-22
DE19883809556 DE3809556A1 (de) 1987-05-23 1988-03-22 Verfahren zur optimierung der feuerung wasserstoffhaltiger brennstoffe

Publications (1)

Publication Number Publication Date
EP0292706A1 true EP0292706A1 (de) 1988-11-30

Family

ID=25855977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106499A Pending EP0292706A1 (de) 1987-05-23 1988-04-22 Verfahren zur Optimierung der Feuerung wasserstoffhaltiger Brennstoffe

Country Status (2)

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EP (1) EP0292706A1 (enrdf_load_stackoverflow)
DE (1) DE3809556A1 (enrdf_load_stackoverflow)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH340939A (de) * 1956-02-03 1959-09-15 Ckd Dukla Narodni Podnik Verfahren und Apparatur zur selbsttätigen kontinuierlichen Kontrolle von Verbrennungsvorgängen
FR1288890A (fr) * 1961-02-16 1962-03-30 Central De Chauffe Rationnelle Procédé et appareillage pour la détermination des teneurs en poussières dans les résidus gazeux de combustion
US4492560A (en) * 1983-11-14 1985-01-08 Hardy Sundberg Gas combustion control apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423946A1 (de) * 1984-03-21 1985-09-26 Hartmann & Braun Ag, 6000 Frankfurt Regelverfahren fuer die verbrennungsluftmenge einer feuerungseinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH340939A (de) * 1956-02-03 1959-09-15 Ckd Dukla Narodni Podnik Verfahren und Apparatur zur selbsttätigen kontinuierlichen Kontrolle von Verbrennungsvorgängen
FR1288890A (fr) * 1961-02-16 1962-03-30 Central De Chauffe Rationnelle Procédé et appareillage pour la détermination des teneurs en poussières dans les résidus gazeux de combustion
US4492560A (en) * 1983-11-14 1985-01-08 Hardy Sundberg Gas combustion control apparatus

Also Published As

Publication number Publication date
DE3809556C2 (enrdf_load_stackoverflow) 1991-04-11
DE3809556A1 (de) 1988-12-01

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