EP0121437A3 - Control system for a boiler or furnace - Google Patents

Control system for a boiler or furnace Download PDF

Info

Publication number
EP0121437A3
EP0121437A3 EP84302239A EP84302239A EP0121437A3 EP 0121437 A3 EP0121437 A3 EP 0121437A3 EP 84302239 A EP84302239 A EP 84302239A EP 84302239 A EP84302239 A EP 84302239A EP 0121437 A3 EP0121437 A3 EP 0121437A3
Authority
EP
European Patent Office
Prior art keywords
boiler
furnace
level
control system
sample portion
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Withdrawn
Application number
EP84302239A
Other languages
German (de)
French (fr)
Other versions
EP0121437A2 (en
Inventor
John Kenneth Francis Kelsall-Spurr
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.)
MONARFLEX Ltd
Original Assignee
MONARFLEX Ltd
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 MONARFLEX Ltd filed Critical MONARFLEX Ltd
Publication of EP0121437A2 publication Critical patent/EP0121437A2/en
Publication of EP0121437A3 publication Critical patent/EP0121437A3/en
Withdrawn legal-status Critical Current

Links

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
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/04—Memory
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves

Abstract

A control system for a boiler or furnace (2) extracts from the flue (4) a sample portion of the burnt flue gas. The level of unburnt oxygen therein is detected and compared with a stored reference level which, for the particular fuel supply rate, is indicative of efficient boiler or furnace operation. If the detected oxygen level differs from said stored reference level by more than a predetermined amount the relative proportion of fuel and air in the mixture is adjusted in the appropriate sense, prior to the burnt flue gas being re-tested. Before detec­ tion the sample portion is passed through a trap (18) having a condenser portion from which liquid condensed from the sample portion drains into a sump portion. The condensed liquid is automatically drawn from the sump portion at inter­ vals by a siphonic duct.
EP84302239A 1983-03-31 1984-04-02 Control system for a boiler or furnace Withdrawn EP0121437A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8308902 1983-03-31
GB8308902 1983-03-31

Publications (2)

Publication Number Publication Date
EP0121437A2 EP0121437A2 (en) 1984-10-10
EP0121437A3 true EP0121437A3 (en) 1985-01-23

Family

ID=10540531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84302239A Withdrawn EP0121437A3 (en) 1983-03-31 1984-04-02 Control system for a boiler or furnace

Country Status (1)

Country Link
EP (1) EP0121437A3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW338094B (en) * 1996-05-22 1998-08-11 Toyota Motor Co Ltd Method and device of burning control of an oxygen sensor
DE19963974C2 (en) * 1999-12-31 2002-11-14 Bosch Gmbh Robert gas burner
US8568632B2 (en) 2003-11-26 2013-10-29 Owens Corning Intellectual Capital, Llc Method of forming thermoplastic foams using nano-particles to control cell morphology
AT504887B1 (en) 2007-04-02 2008-09-15 Vaillant Austria Gmbh METHOD FOR FILLING LEVEL MONITORING OF A LIQUID GAS TANK

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404836A (en) * 1965-12-20 1968-10-08 Westinghouse Electric Corp Heat generating apparatus
FR2069721A5 (en) * 1969-11-10 1971-09-03 Jones & Laughlin Steel Corp
FR2392327A1 (en) * 1977-05-25 1978-12-22 Telegan Ltd BURNER REGULATION SYSTEM
US4160170A (en) * 1978-06-15 1979-07-03 United Technologies Corporation Wind turbine generator pitch control system
EP0050840A1 (en) * 1980-10-23 1982-05-05 Karl Dungs GmbH & Co. Process to adjust compound regulators for burners in heat-generating equipments
GB2088091A (en) * 1980-11-03 1982-06-03 Econics Corp Combustion control system
DE3103940A1 (en) * 1981-02-05 1982-08-12 Günter Dr.-Ing. 7405 Dettenhausen Baumbach Device for monitoring furnace off gases

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404836A (en) * 1965-12-20 1968-10-08 Westinghouse Electric Corp Heat generating apparatus
FR2069721A5 (en) * 1969-11-10 1971-09-03 Jones & Laughlin Steel Corp
FR2392327A1 (en) * 1977-05-25 1978-12-22 Telegan Ltd BURNER REGULATION SYSTEM
US4160170A (en) * 1978-06-15 1979-07-03 United Technologies Corporation Wind turbine generator pitch control system
EP0050840A1 (en) * 1980-10-23 1982-05-05 Karl Dungs GmbH & Co. Process to adjust compound regulators for burners in heat-generating equipments
GB2088091A (en) * 1980-11-03 1982-06-03 Econics Corp Combustion control system
DE3103940A1 (en) * 1981-02-05 1982-08-12 Günter Dr.-Ing. 7405 Dettenhausen Baumbach Device for monitoring furnace off gases

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ADVANCES IN INSTRUMENTATION, vol. 37, 1982, Part 3, Research Triangle Park, NC, US Pittsburgh, US C. PRESSER et al.: "Evaluation of O2 and Co monitoring systems for combustion controls", pages 1515-1536. *
CONTROL AND INSTRUMENTATION. vol. 9, no. 11, December 1977, London, GB "Meeting smaller users' demands for efficient combustion controls", page 33. *
OIL & GAS JOURNAL, vol. 79, no. 38, September 21, 1981, Technology TULSA, Oklahoma, US D.J. LEONARD et al.: "Automatic control ups heater combustion", pages 134-138. *

Also Published As

Publication number Publication date
EP0121437A2 (en) 1984-10-10

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

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Effective date: 19850723

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Effective date: 19870409

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19870811

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KELSALL-SPURR, JOHN KENNETH FRANCIS