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WO1998014734A2 - Procede pour bruler des gaz, et dispositif convenant pour mettre en oeuvre ledit procede - Google Patents

Procede pour bruler des gaz, et dispositif convenant pour mettre en oeuvre ledit procede Download PDF

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Publication number
WO1998014734A2
WO1998014734A2 PCT/NL1997/000548 NL9700548W WO9814734A2 WO 1998014734 A2 WO1998014734 A2 WO 1998014734A2 NL 9700548 W NL9700548 W NL 9700548W WO 9814734 A2 WO9814734 A2 WO 9814734A2
Authority
WO
WIPO (PCT)
Prior art keywords
flame
tubes
gas
air
combustion chamber
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.)
Ceased
Application number
PCT/NL1997/000548
Other languages
English (en)
Other versions
WO1998014734A3 (fr
Inventor
Frank Gerhardus Geerdink
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 AU44029/97A priority Critical patent/AU4402997A/en
Publication of WO1998014734A2 publication Critical patent/WO1998014734A2/fr
Publication of WO1998014734A3 publication Critical patent/WO1998014734A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/08—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • F23L7/005—Evaporated water; Steam
    • 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
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • F23M20/005—Noise absorbing means
    • 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
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/30—Application in turbines
    • F05B2220/302—Application in turbines in gas turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise

Definitions

  • a method for burning off gas, as well as a device suitable for carrying out such a method is also possible.
  • the invention relates to a method for burning off gas, according to which method gas is mixed with air, after which the air/gas mixture is burned in a substantially vertically extending combustion space, whereby a torch-like flame is formed.
  • the invention also relates to a device suitable for carrying out such a method, which device comprises a substantially vertically extending combustion chamber, which is near its bottom side provided with at least one air/gas mixture supply channel.
  • the object of the invention is to provide a method for burning off gas, wherein the above drawbacks are avoided.
  • this objective is accomplished in that steam is supplied at the lower side of the flame, which steam is used to regulate the size of the flame.
  • One embodiment of the method according to the invention is characterized in that a relatively small flow of air/gas mixture is first ignited when the burning of the air/gas mixture is started, whereby a torch-like flame is formed, after which water is sprayed into the flame, which water is evaporated by the flame and rises to the upper side of the flame, after which the supply of the air/gas mixture to the combustion chamber is increased considerably, whereby the steam being formed is drawn down along walls of the combustion chamber, whereby the flame is reduced to a desired size. In this manner the combustion process can be started.
  • the water being sprayed into the flame which subsequently rises to the upper side of the flame, forms a block of steam above the flame, as it were.
  • an overpressure is generated at that location.
  • an underpressure is generated, which draws the block of steam downwards, thereby pushing the flame down, as it were.
  • This flame of a reduced height can be maintained by subsequently supplying steam to the lower side of the flame.
  • the object of the invention is furthermore to provide a device wherein the drawbacks of the known device are avoided.
  • the device is furthermore provided with a steam supply channel near the bottom side of the combustion chamber. Supplying steam through the steam supply channel makes it possible to regulate the size of the torch-like flame which is formed when gas is burned off.
  • German patent application DE-A1- 26.54.438 a device is known wherein steam is supplied to the combustion chamber.
  • the steam helps to ensure that the gas is burned without producing smoke. It is not known from the said document, however, to supply steam in such a manner that the torch-like flame formed during the burning off of the gas can be controlled as regards its size.
  • Figure 1 is a perspective view of a device according to the invention
  • Figure 2 shows a longitudinal section of a part of the device shown in Figure 1;
  • Figure 3 shows a bottom side of the combustion chamber of the device shown in Figure 1;
  • Figure 4 shows a detail of the view shown in Figure
  • Figure 5 shows a cross-section of the view shown in Figure 3, seen in the direction indicated by arrows V-V;
  • Figure 6 is a bottom view of the device shown in Figure 2;
  • FIGs 7 and 8 show details of the device shown in Figure 2;
  • Figures 9A-9C show a sound absorber of the device.
  • Figure 10 shows a heat-resistant baffle of the sound absorber shown in Figures 9A-9C.
  • Figure 1 shows a device 1 according to the invention, wherein the most essential parts of the device according to the invention are schematically illustrated.
  • Device 1 comprises a combustion chamber 2, which is bounded by a double-walled cylinder 3. Double-walled cylinder
  • Cylinder 3 is at its bottom side closed by a metal plate 5, through which tubes 6, 7 extend. Tubes 7 form steam supply channels and are connected to pipes present in double-walled cylinder 3 (see Figure 2).
  • a cylindrical drum 8 is disposed parallel to plate 5, at some distance therefrom, to which drum a gas supply pipe 9 is connected.
  • drum 8 is provided with a plate 10 comprising a plurality of air supply channels 12 opening into drum 8 and extending therethrough.
  • the tubes 6 in plate 5 are disposed co-axially above gas supply channels 11.
  • the space between plates 5, 10 constitutes a air/gas mixing chamber 13.
  • Double-walled cylinder 3 comprises two concentrically disposed tubes 14, 15, which are interconnected at their bottom sides and at their upper sides by an annular plate 16.
  • Tube 14 forms the inner wall of combustion chamber 2.
  • Combustion chamber 2 is open at an upward side, and opens into an expansion space 17.
  • a sound absorber as shown in Figures
  • FIG. 9A-9C and Figure 10 is provided above expansion space 17.
  • Figure 2 shows a longitudinal section of the device 1 shown in Figure 1, from which certain parts have been left of for the sake of clarity.
  • a plurality of substantially vertically extending pipes 18 are present in the space between tubes 14, 15 of double-walled cylinder 3, said pipes being open at one upper side and being connected to a U- shaped pipe 19 at a bottom side facing away from said upper side, which pipe 19 is connected to a tube 7A.
  • An annular partition plate 20 divides the space within the double-walled cylinder into a first space 17 and a second space 21 present above said first space.
  • Second space 21 is at an upper side connected to a pipe 22 extending along the outside of double- walled cylinder 3, said pipe at the bottom side of double-walled cylinder being connected to substantially vertically extending pipes 23, which open into tubes 7b.
  • Device 1 is furthermore provided with a water supply pipe 24, which comprises a pipe 25 extending along the outside of double-walled cylinder 3 and two pipes 26 disposed substantially horizontally within cylindrical spaces 17, 21.
  • Device 1 is furthermore provided with a water spray supply pipe 27, which comprises a vertical pipe 28 extending into combustion chamber 2 and a substantially horizontally extending pipe 29. Horizontally extending pipes 26, 29 are provided with a plurality of water passages 30.
  • Device 1 is furthermore provided with a water pipe 31, by means of which water can be sprayed under pressure into combustion chamber 2.
  • Tube 14 is provided with a bellows-shaped part 32, which functions to absorb expansion differences between tubes 14, 15.
  • Figure 3 is a view of a part of the bottom side of the device shown in Figure 1, showing drum 8 and plate 5 positioned above said drum. For the sake of clarity only a single tube 11 and a single tube 6 are shown.
  • drum 8 comprises four gas supply pipes 9a-9d, whereby gas supply pipe 9d is positioned behind gas supply pipe 9b. Each gas supply pipe 9a-9d opens into a gas supply chamber 40a-40d associated therewith.
  • Air supply channels 12 extend through gas supply chambers 40a-40d.
  • Gas supply chambers 40a-40d are provided with a plurality of vertically extending gas supply tubes 11, which taper off near plate 5.
  • Plate 5 is provided with air/gas mixture supply tubes 6, which taper off at a side facing the drum and extend coaxially to the gas supply tubes 11.
  • the opposite conical parts 41, 42 of tubes 11, 6 constitute a venturi, whereby gas flowing through tubes 11 at a relatively high velocity and pressure draws along air from air/gas mixture chamber 13 and takes it into combustion chamber 2 through tubes 6.
  • Air/gas mixture chamber 13 is supplied with fresh air through air supply channels 12.
  • FIG 4 clearly shows the venturi made up of the conical parts 41, 42 of tubes 11 and 6 respectively.
  • Figure 5 shows a cross-section of the drum 8 shown in Figure 3.
  • a plurality of radially extending partition plates 43 divide drum 8 into a plurality of gas supply chambers or sections 40a-40d, with empty sections 44 present therebetween.
  • Figure 6 shows a bottom side of the device 1 shown in
  • Pipes 22 branch into a plurality of vertically extending pipes 23 associated with various gas supply chambers or sections 40a-40d.
  • each section 40a-40d comprises four U-shaped pipes 19 and steam supply tubes 7a connected thereto.
  • Figure 7 shows a detail of the device 1 shown in Figure
  • Figure 8 shows a detail of a bottom side of a device according to the invention, which illustrates U-shaped pipe 19 and steam supply tube 7a connecting thereto.
  • FIGS 9A-9C show various views of a sound absorber 5 according to the invention.
  • Sound absorber 50a comprises two parallel side walls 51 and baffles 52 extending therebetween. Side walls 51 are provided with parabolic openings 53.
  • Baffles 52 include an angle o ⁇ with a completely open bottom face 54 of sound absorber 50. Combustion gases flow through bottom face 54 into sound absorber 50 in the direction indicated by arrow PI, after which the combustion gases are deflected by baffles 52, in the direction indicated by arrows P2, after which the combustion gases exit sound absorber 50 along side faces 55 and upper face 56.
  • Sound absorber 50 comprises side walls 57 near side faces 55, said side walls being spaced from baffles 52. The combustion gases can also exit from sound absorber 50 through parallel opening 53.
  • Baffles 52 comprise a frame 60 built up of U-like sections, stiffening plates 61 and a stainless steel, heat-resistant mesh (seen Figure 10). Baffles 52 muffle the sound from the combustion gases.
  • the surface area of the surface 54 forming the inlet opening is considerably smaller than the surface area of the surfaces 55, 56, 51 forming the outlet opening, as a result of which the velocity and the temperature of the combustion gases flowing through the sound absorber are considerably reduced.
  • the operation of the device 1 according to the invention is as follows. Water is pumped into spaces 17, 21 of double-walled cylinder 3 via water pipes 24, 25, 26, up to a predetermined level therein.
  • the device is provided with sensors and a regulator, by means of which the water levels within spaces 17, 21 can be sensed and regulated.
  • gas is supplied to drum 8 via gas supply channels 9a-9d, and supplied to the combustion chamber via gas supply chambers 40a-40d, tubes 11 and tubes 6 positioned thereabove.
  • gas supply chambers 40a-40d tubes 11 and tubes 6 positioned thereabove.
  • the air/gas mixture is ignited by means of an automatic igniter (not shown), whereby a torch-like flame is formed.
  • the heat of the flame will heat the water present inside the cylinder wall and form steam near the upper side of spaces 17, 21.
  • a predetermined cylinder wall temperature or a predetermined steam pressure is reached, water is sprayed into the flame via pipes 31, 27, 28, 29, which water will be evaporated by the heat of the flame and rise to the upper side of the combustion chamber in the form of steam.
  • the gas flow is increased considerably, whereby an overpressure is generated near the central axis of the combustion chamber.
  • An underpressure is generated near the wall of the combustion chamber, which underpressure draws the steam present at the upper side of the combustion chamber downwards. This block of steam formed at the upper side of the combustion chamber forces the flame in downward direction, as it were, thereby reducing the size of the flame.
  • the total height of the device amounted to about 15 m, with 75,000 m 3 of gas being burned per hour.
  • the gas is forced into combustion chamber 2 through tubes 6 at a velocity of about 800 km/h.
  • the temperature at the bottom side of the sound absorber was about 500 - 800 °C.
  • Heat-conducting baffles may be disposed between tubes 14, 15, by means of which baffles the temperature of the inner tube 14 can be transferred more quickly to the water present between tubes 14, 15.

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

Abstract

L'invention concerne un procédé et un dispositif permettant de brûler des gaz. Selon le procédé, on mélange le gaz avec de l'air, puis on brûle le mélange air/gaz dans un espace de combustion sensiblement vertical, ce qui donne une flamme de type torche. De la vapeur amenée à la partie inférieure de la flamme est utilisée pour réguler la taille de cette dernière.
PCT/NL1997/000548 1996-10-04 1997-10-02 Procede pour bruler des gaz, et dispositif convenant pour mettre en oeuvre ledit procede Ceased WO1998014734A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44029/97A AU4402997A (en) 1996-10-04 1997-10-02 A method for burning off gas, as well as a device suitable for carrying out such a method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1004190 1996-10-04
NL1004190A NL1004190C2 (nl) 1996-10-04 1996-10-04 Werkwijze voor het affakkelen van gas, alsmede inrichting geschikt voor het uitvoeren van een dergelijke werkwijze.

Publications (2)

Publication Number Publication Date
WO1998014734A2 true WO1998014734A2 (fr) 1998-04-09
WO1998014734A3 WO1998014734A3 (fr) 1998-06-04

Family

ID=19763615

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1997/000548 Ceased WO1998014734A2 (fr) 1996-10-04 1997-10-02 Procede pour bruler des gaz, et dispositif convenant pour mettre en oeuvre ledit procede

Country Status (3)

Country Link
AU (1) AU4402997A (fr)
NL (1) NL1004190C2 (fr)
WO (1) WO1998014734A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278972A (zh) * 2014-10-17 2015-01-14 盐城市大冈石油工具厂有限责任公司 井口简易调节装置
JP2015059737A (ja) * 2013-09-20 2015-03-30 株式会社Ihi グランドフレア

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106402905B (zh) * 2016-09-05 2018-07-10 郑立敏 一种分级燃烧火炬头装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258657A (en) 1925-06-23 1926-09-23 Hans Knudsen Improvements in or relating to liquid fuel burners
DE2654369A1 (de) 1976-04-16 1977-10-27 Hitachi Shipbuilding Eng Co Abfackelvorrichtung fuer abgase
DE2654438A1 (de) 1976-04-09 1978-02-23 Hitachi Shipbuilding Eng Co Abfackelvorrichtung
US4128389A (en) 1977-08-22 1978-12-05 Combustion Unlimited Incorporated Flare stack gas burner
US4336017A (en) 1977-01-28 1982-06-22 The British Petroleum Company Limited Flare with inwardly directed Coanda nozzle
DE3511740A1 (de) 1985-03-30 1986-10-09 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Brennkammer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258657A (en) 1925-06-23 1926-09-23 Hans Knudsen Improvements in or relating to liquid fuel burners
DE2654438A1 (de) 1976-04-09 1978-02-23 Hitachi Shipbuilding Eng Co Abfackelvorrichtung
DE2654369A1 (de) 1976-04-16 1977-10-27 Hitachi Shipbuilding Eng Co Abfackelvorrichtung fuer abgase
US4336017A (en) 1977-01-28 1982-06-22 The British Petroleum Company Limited Flare with inwardly directed Coanda nozzle
US4128389A (en) 1977-08-22 1978-12-05 Combustion Unlimited Incorporated Flare stack gas burner
DE3511740A1 (de) 1985-03-30 1986-10-09 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Brennkammer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015059737A (ja) * 2013-09-20 2015-03-30 株式会社Ihi グランドフレア
CN104278972A (zh) * 2014-10-17 2015-01-14 盐城市大冈石油工具厂有限责任公司 井口简易调节装置

Also Published As

Publication number Publication date
NL1004190C2 (nl) 1998-04-07
WO1998014734A3 (fr) 1998-06-04
AU4402997A (en) 1998-04-24

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