EP0050232B1 - Verfahren zur Verhinderung einer Ausbreitung des Feuers auf dem zum Feuerraum einer Feuerungsanlage für festes Brennmaterial führenden Zufuhrweg und Feuerungsanlage zur Durchführung des Verfahrens - Google Patents

Verfahren zur Verhinderung einer Ausbreitung des Feuers auf dem zum Feuerraum einer Feuerungsanlage für festes Brennmaterial führenden Zufuhrweg und Feuerungsanlage zur Durchführung des Verfahrens Download PDF

Info

Publication number
EP0050232B1
EP0050232B1 EP81107552A EP81107552A EP0050232B1 EP 0050232 B1 EP0050232 B1 EP 0050232B1 EP 81107552 A EP81107552 A EP 81107552A EP 81107552 A EP81107552 A EP 81107552A EP 0050232 B1 EP0050232 B1 EP 0050232B1
Authority
EP
European Patent Office
Prior art keywords
feed
heat exchanger
water
fire
vapour
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.)
Expired
Application number
EP81107552A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0050232A3 (en
EP0050232A2 (de
Inventor
Hans Grossniklaus
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT81107552T priority Critical patent/ATE7331T1/de
Publication of EP0050232A2 publication Critical patent/EP0050232A2/de
Publication of EP0050232A3 publication Critical patent/EP0050232A3/de
Application granted granted Critical
Publication of EP0050232B1 publication Critical patent/EP0050232B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
    • A62C4/04—Flame traps allowing passage of gas but not of flame or explosion wave in flues or chimneys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M11/00—Safety arrangements

Definitions

  • the invention relates to a method for preventing the spread of fire on the feed path leading to the firebox of a firing system for solid fuel and a firing system for carrying out the method according to the preambles of claims 1 and 5.
  • the fire is prevented from spreading on the feed path if the fire cannot spread over the entire feed path beyond the section of the feed path opening into the firebox.
  • the object of the invention is to prevent the fire from spreading on the feed path without noticeably affecting the combustion in the combustion chamber.
  • the water vapor directed into the fuel on the feed path does two things. First, it penetrates evenly into the entire fuel so that its moisture content is increased. Second, it increases the humidity on the supply route. This means that the conditions for the fire to spread in the supply channel are no longer present.
  • the combustion in the combustion chamber is not affected, at least not noticeably, because the temperatures are very high and sufficient fresh air is supplied so that the fuel, which is moist but not soaked, burns well.
  • the water vapor can be fed continuously or periodically intermittently. However, it is expediently only supplied if a predetermined temperature on the supply path is exceeded. This happens if the fire detects the fuel at the end of the feed path and begins to spread along the feed path. If, for example, wood is used as fuel, this is the case when the wood supplied is very dry, so that the fire spreads faster than the wood is supplied. On the other hand, if, for example, freshly cut wood is fed in, the rate of spread (burn-back speed) of the fire is lower than the rate of conveyance of the wood, the fire cannot spread over the feed path and the predetermined temperature is not exceeded.
  • a predetermined temperature on the supply path is exceeded. This happens if the fire detects the fuel at the end of the feed path and begins to spread along the feed path. If, for example, wood is used as fuel, this is the case when the wood supplied is very dry, so that the fire spreads faster than the wood is supplied. On the other hand, if, for example, freshly cut wood is fed in, the rate
  • each time after the predetermined temperature is exceeded only a small amount of water is evaporated in a burst.
  • the amount of water is only so large that the spread of the fire is prevented. To do this, it is sufficient to moisten the wood in such a way that the rate of fire spread is less than the speed of the minimum fuel flow required to maintain the fire in the combustion chamber, which is maintained during operation of the plant when no heat is required.
  • the system shown is a wood-burning system for central heating with automatic loading of the combustion chamber. It has a container 1 for the wood, which has an opening 2 reinforced at the bottom in a side wall, which opens into a feed channel 4 leading to the combustion chamber 3. A plunger which is moved back and forth in the container 1 (not shown) breaks the wood at the opening 2 and pushes it into the feed channel 4. This is explained in detail in US Pat. No. 4,185,567.
  • the combustion chamber 3 is located in a combustion chamber 5, not shown in detail, the details of which are described in US Pat. No. 4,181,082.
  • One connected to the water supply network ne water pipe 6 leads via a valve 7 which can be actuated by means of a pressure membrane and a heat exchanger 8 to a heat exchanger 9 in which the water is evaporated.
  • a steam supply line 10 connected to the heat exchanger 9 conducts the generated steam to an opening 11 in the wall of the rear of the two pipe sections 12, 13 forming the supply channel 4.
  • the heat exchanger 8 sits on the rear end of the pipe section 12 flanged to the pipe section 13. It consists of a metal block 14 screwed onto the wall of the pipe section 12, which stores the heat transferred from the pipe wall and transfers it to the water flowing through its bore 15 .
  • the heat exchanger 9 sits on the front end of the pipe section 12 flanged to the combustion chamber 5. It also has a metal block 19 screwed onto the wall of the pipe section 12, which stores the heat transferred from the pipe wall.
  • a pipe section 20 is welded onto the metal block 19 and is closed by a screw-off cover 21. The water line 6 and the steam supply line 10 open at a distance above the metal block 19 forming the bottom of the heat exchanger 9 into the upper part of the pipe section 20.
  • connection bores for the lines 6 and 10 are arranged in the upper part of the pipe section 20 Avoided that the lime precipitating during the evaporation of the water supplied through the water line 6 and settling on the metal block 19 in the lower part of the pipe section 20 clogs the connection bores.
  • the lid 21 can be unscrewed so that the heat exchanger 9 is cleaned, i.e. H. the lime can be removed.
  • An asbestos intermediate ring 16, 16 ' is arranged between the flanges of the combustion chamber wall 5 and the pipe section 12 and the two pipe sections 12, 13.
  • the asbestos ring 16 prevents the pipe section 12 from heating up too much as a result of heat conduction from the combustion chamber wall 5 and thereby promoting the spread of fire into the pipe section 12.
  • the asbestos ring 16 ′ prevents the rear end of the pipe section 12 from being cooled down significantly by dissipation of the heat into the pipe section 13 and thereby the operation of the heat exchanger 8 described below being impaired.
  • the heating of the water in the heat exchanger 8 is indeed desirable because the heat exchanger 9 can then heat and evaporate the water more quickly to the boiling point, but it is not the actual purpose of the heat exchanger 8. Rather, it works with an expansion material temperature sensor 17 and the membrane valve 7 so that it opens when a certain temperature is exceeded and closes again after flowing through a certain amount of water.
  • the container of the temperature sensor 17 containing the expansion fluid is seated in a second bore of the heat exchanger block 14 parallel to the bore 15.
  • a capillary tube 18 connects the probe 17 to the membrane valve 7, so that it opens after a predetermined temperature is exceeded and after the temperature falls below the Temperature closes again. Since the heat exchanger 8 is cooled by the water flowing through it, the temperature drop which causes the valve 7 to close occurs after a certain amount of water has flowed through the heat exchanger 8.
  • the method according to the invention is particularly suitable for wood-fired systems of the type described above, in which splintered wood is supplied because the steam easily penetrates into the air spaces created during the splitting and the wood is continuously moistened.
  • the application of the method according to the invention is in no way limited to such wood-fired systems.
  • the method is, for example, just as well suitable for the known wood-burning systems in which wood is processed into a small-sized conveyed material in a comminution system and is fed to the combustion chamber by means of a screw conveyor arranged in a feed pipe.
  • other solid materials can also be considered as fuel, e.g. B. coal, the problem of fire spreading in wood arises in particular because the moisture content fluctuates greatly depending on the wood used.
  • the generation of the steam in the heat exchanger 9 has the advantage that the waste heat generated during combustion at the outlet of the supply channel is used for the evaporation of the water.
  • the steam could also be by means of a z. B. electrically heated evaporator, for. B. a steam boiler.
  • the temperature sensor 17 and the valve 7 controlled by this a certain, small and, in addition, preheated amount of water is emitted to the heat exchanger 9 in a very simple manner when the predetermined temperature is exceeded, which evaporates this metered amount of water in a burst.
  • the temperature sensor 17 or a control device connected to it could open the valve 7 even when an upper temperature limit is exceeded and only close again after a significant drop in temperature when the temperature falls below a lower temperature limit.
  • the amount of water to be evaporated could also be metered in in other ways, e.g. B. could be provided a timer that opens the valve after triggering by a temperature sensor during a preselected time period according to the desired amount of water.
  • the fact that the steam supply line 10 opens into the rear part 13 of the supply duct 4 ensures that the steam is distributed evenly throughout the duct. If the feed line 10 would open into the end of the feed channel 4 connected to the combustion chamber 5, part of the steam could u. U. escape into the firebox 3.
  • the arrangement of the steam supply opening 11 in the rear channel part 13 - at a distance from the fire chamber entrance which is a multiple of the channel diameter - furthermore ensures that the fire does not spread throughout, even if there is an explosive expansion into the front end of the supply channel Feed channel spreads out, because then in rapid succession steam bursts into the not yet burning wood in the rear part and this is moistened so strongly that a further spread of the fire is impossible.
  • a nozzle can also be provided at the outlet of the opening 11 in order to distribute the steam in the feed channel at an even higher speed. Furthermore, in the case of very long supply channels, a plurality of steam supply lines could be provided, or a steam supply line could open into the supply channel at several points in order to reliably supply the supply channel with steam over the entire length.
  • the heat exchanger 8 can be omitted if the temperature sensor 17 is arranged in a bore in the metal block 19 of the heat exchanger 9 and this is mounted on the supply duct 4. On the other hand, the heat exchanger 8 with the temperature sensor 17 at the front end of the supply channel 4 and the heat exchanger 9 could be mounted on or in the combustion chamber 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Solid-Fuel Combustion (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephonic Communication Services (AREA)
  • Control Of Combustion (AREA)
  • Tires In General (AREA)
  • Road Paving Structures (AREA)
  • Glass Compositions (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Braking Arrangements (AREA)
  • Railway Tracks (AREA)
EP81107552A 1980-10-17 1981-09-23 Verfahren zur Verhinderung einer Ausbreitung des Feuers auf dem zum Feuerraum einer Feuerungsanlage für festes Brennmaterial führenden Zufuhrweg und Feuerungsanlage zur Durchführung des Verfahrens Expired EP0050232B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81107552T ATE7331T1 (de) 1980-10-17 1981-09-23 Verfahren zur verhinderung einer ausbreitung des feuers auf dem zum feuerraum einer feuerungsanlage fuer festes brennmaterial fuehrenden zufuhrweg und feuerungsanlage zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH776080 1980-10-17
CH7760/80 1980-10-17

Publications (3)

Publication Number Publication Date
EP0050232A2 EP0050232A2 (de) 1982-04-28
EP0050232A3 EP0050232A3 (en) 1982-09-08
EP0050232B1 true EP0050232B1 (de) 1984-05-02

Family

ID=4330078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107552A Expired EP0050232B1 (de) 1980-10-17 1981-09-23 Verfahren zur Verhinderung einer Ausbreitung des Feuers auf dem zum Feuerraum einer Feuerungsanlage für festes Brennmaterial führenden Zufuhrweg und Feuerungsanlage zur Durchführung des Verfahrens

Country Status (9)

Country Link
US (1) US4385569A (fi)
EP (1) EP0050232B1 (fi)
JP (1) JPS5798718A (fi)
AT (1) ATE7331T1 (fi)
CA (1) CA1185123A (fi)
DE (1) DE3163407D1 (fi)
DK (1) DK149415C (fi)
FI (1) FI67443C (fi)
NO (1) NO152575C (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4200108A1 (de) * 1992-01-04 1993-07-08 Alfo Ag Loeschmittelventil
CN101347661B (zh) * 2008-06-26 2012-01-25 张家港市保丽洁环保科技有限公司 高温油烟管道中的灭火装置
CN104014089A (zh) * 2014-06-17 2014-09-03 蓝星石油有限公司济南分公司 用于硫磺回收装置烟囱的紧急灭火装置
CN110863672A (zh) * 2019-11-28 2020-03-06 湖南麓上住宅工业科技有限公司 悬挑高层木结构建筑
CN113304419A (zh) * 2021-06-03 2021-08-27 中消盾科技有限公司 一种汽车自燃灭火装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US169338A (en) * 1875-11-02 Improvement in furnaces
US668787A (en) * 1899-11-24 1901-02-26 Ernest Armand Vetillard Apparatus for feeding liquid and solid pulverized fuel into furnaces.
US744220A (en) * 1903-04-10 1903-11-17 Duryee E Fuel-burner.
US2353144A (en) * 1939-08-12 1944-07-11 Carrier Corp Air conditioning system
US3183864A (en) * 1962-02-14 1965-05-18 Combustion Eng Method and system for operating a furnace
US3748080A (en) * 1971-12-27 1973-07-24 Peabody Engineering Corp Combustion control apparatus using a liquid spray
US3861857A (en) * 1974-01-14 1975-01-21 John F Straitz Flammable liquid waste burner
US3916991A (en) * 1974-04-05 1975-11-04 George S Trump Heating system
US3994671A (en) * 1975-03-14 1976-11-30 Combustion Unlimited Incorporated Flare gas burner
US4008038A (en) * 1975-09-10 1977-02-15 Columbia Technical Corporation Fuel conditioning apparatus and method
DK124377A (da) * 1976-04-03 1977-10-04 Danfoss As Anordning til opvarmning afkoling eller klimatisering af et rum
US4094632A (en) * 1977-02-07 1978-06-13 John Zink Company Accelerated response for delivery of smoke suppressant to flares
CH622079A5 (fi) * 1977-06-17 1981-03-13 Hans Grossniklaus
US4147116A (en) * 1977-09-19 1979-04-03 Coal Tech Inc. Pulverized coal burner for furnace and operating method
US4204463A (en) * 1978-07-18 1980-05-27 Jack Carty Stack design
US4344751A (en) * 1979-03-24 1982-08-17 The British Petroleum Company Limited Flares

Also Published As

Publication number Publication date
FI67443B (fi) 1984-11-30
JPS5798718A (en) 1982-06-19
EP0050232A3 (en) 1982-09-08
DE3163407D1 (en) 1984-06-07
NO152575B (no) 1985-07-08
US4385569A (en) 1983-05-31
DK454781A (da) 1982-04-18
NO152575C (no) 1985-10-16
DK149415B (da) 1986-06-02
DK149415C (da) 1987-01-12
EP0050232A2 (de) 1982-04-28
FI813212L (fi) 1982-04-18
FI67443C (fi) 1985-03-11
NO813505L (no) 1982-04-19
ATE7331T1 (de) 1984-05-15
CA1185123A (en) 1985-04-09

Similar Documents

Publication Publication Date Title
DE2836531A1 (de) Fliessbett-verbrennungsvorrichtung
EP0954722B1 (de) Mit wasser gekühlter verbrennungsrost
EP0172375A1 (de) Vorrichtung zur Erhitzung eines Fluidums und zur Reinigung der Abgase von Feurerungsanlagen
EP0050232B1 (de) Verfahren zur Verhinderung einer Ausbreitung des Feuers auf dem zum Feuerraum einer Feuerungsanlage für festes Brennmaterial führenden Zufuhrweg und Feuerungsanlage zur Durchführung des Verfahrens
DE3438018A1 (de) Verfahren zum verbrennen von kohle
DE2366052A1 (de) Tabaktrockner
DE2300749C3 (de) Vertikalveraschungsofen für schlammartige Rückstände
DE3344089A1 (de) Vorrichtung fuer heizungsanlagen
DE2935520A1 (de) Verfahren zum betreiben einer wirbelschicht-verbrennungsanlage und vorrichtung zur durchfuehrung des verfahrens
DE2442122A1 (de) Pyrolyse-behaelter
DE2158317A1 (de) Brennvorrichtung zum brennen von erzkuegelchen und dergleichen koerpern
EP0919771B1 (de) Verfahren zum Verbrennen von Feststoffen auf einem wassergekühlten Schub-Verbrennungsrost, sowie Rostplatte und Rost zur Ausübung des Verfahrens
DE3123328C2 (de) Anordnung zum Austragen von heißer Asche insbesondere aus Wirbelschichtreaktoren und Wirbelschichtöfen
DE3226877A1 (de) Heizkessel
DE2148065A1 (de) Heizkessel fur industrielle Anlagen
DE3715132C2 (fi)
CH365094A (de) Wärmeaustauscher
AT408270B (de) Feuerungsanlage
EP0987494A1 (de) Verfahren zur Kühlung eines Rostes für einen Feuerungsraum sowie Rost für einen Feuerungsraum
DE1920624A1 (de) Verfahren und Einrichtung zum Verbrennen von fluessigen Brennstoffen
DE604450C (de) Oberflaechenspeisewasserentgaser, besonders fuer Schiffsbetrieb
DE585794C (de) Vorrichtung zum Entwrasen der Braunkohle
DE970783C (de) Durchfluss-Roehrendampferzeuger
DE315213C (fi)
AT88970B (de) Vorrichtung an mittels Elektroden elektrisch geheizten Dampfkesseln.

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

AK Designated contracting states

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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

17P Request for examination filed

Effective date: 19821103

ITF It: translation for a ep patent filed

Owner name: STUDIO APRA' BREVETTI

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

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

REF Corresponds to:

Ref document number: 7331

Country of ref document: AT

Date of ref document: 19840515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3163407

Country of ref document: DE

Date of ref document: 19840607

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910828

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910909

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910913

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910916

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910918

Year of fee payment: 11

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910930

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920601

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920923

Ref country code: AT

Effective date: 19920923

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920924

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19920930

BERE Be: lapsed

Owner name: GROSSNIKLAUS HANS

Effective date: 19920930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19930401

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920923

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930528

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930602

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 81107552.2

Effective date: 19930406

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19951012

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960930

Ref country code: CH

Effective date: 19960930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL