WO1998043754A1 - Systeme et procede d'incineration reduisant la quantite de combustibles dans les gaz de combustion - Google Patents

Systeme et procede d'incineration reduisant la quantite de combustibles dans les gaz de combustion Download PDF

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Publication number
WO1998043754A1
WO1998043754A1 PCT/US1998/006555 US9806555W WO9843754A1 WO 1998043754 A1 WO1998043754 A1 WO 1998043754A1 US 9806555 W US9806555 W US 9806555W WO 9843754 A1 WO9843754 A1 WO 9843754A1
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WO
WIPO (PCT)
Prior art keywords
combustion chamber
gases
combustion
air
waste material
Prior art date
Application number
PCT/US1998/006555
Other languages
English (en)
Inventor
Gordon H. Hoskinson
Original Assignee
Amko Incinerator Corp.
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 Amko Incinerator Corp. filed Critical Amko Incinerator Corp.
Priority to AU68802/98A priority Critical patent/AU6880298A/en
Publication of WO1998043754A1 publication Critical patent/WO1998043754A1/fr

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Classifications

    • 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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
    • 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
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/06—Baffles or deflectors for air or combustion products; Flame shields in fire-boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/10—Drying by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/101—Combustion in two or more stages with controlled oxidant supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
    • 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
    • F23G2207/101—Arrangement of sensing devices for temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/40—Supplementary heat supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/26—Biowaste
    • F23G2209/262—Agricultural waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/20—Intercepting solids by baffles

Definitions

  • waste material such as garbage or trash
  • air is introduced into the combustion chamber in a volume less than the air requirements at rated capacity, so that the low air volume results in only partial combustion and partial pyrolytic gasification of the waste.
  • waste material such as garbage or vegetable waste
  • waste material such as garbage or vegetable waste
  • the high moisture content along with the fact that the moisture is not evenly distributed throughout the mass of waste results in uneven and incomplete combustion.
  • thermostack an area of the incinerator generally called the thermostack. After combustion in the thermostack, the gas exists the thermostack and enters a scrubber unit.
  • the combustion gas being discharged from the system may contain substantial particulate material such as fly ash.
  • a scrubber in the incineration system in order to minimize the emission of the particulate material.
  • One type of scrubber as used in the past consists of a series of baffles or scrubber members, which are suspended in spaced relation within the scrubber chamber, and are arranged in a pattern to provide a tortuous path of flow for the combustion gases.
  • baffles results in a high velocity flow of combustion gas between adjacent baffles and areas of low velocity or stagnation adjacent the front and rear surface of the baffles, causing heavier particulate material to fall by gravity along the front and rear surfaces of the baffles for collection in a collection bin, while lighter particulate material will collect on the front and rear surfaces.
  • the baffles tend to expand and contract, causing the collected particulate material to dislodge from the baffles, and the dislodged material will fall by gravity to the collection bin or site. Because of the high temperatures encountered in the scrubber, it has been necessary to construct the baffles of a heat resistant alloy such as Inconel. Due to the cost of the material as well as the fabrication expense, the production of the baffles results in a substantial capital expenditure.
  • Combustion of the waste material results in the generation of hot combustion gases and a portion of the hot gases are withdrawn from the upper end of the combustion chamber through a recirculating conduit by a blower and are returned to the lower end of the combustion chamber through a plurality of gas tubes, which are located beneath the air tubes.
  • the gas tubes are located in vertical alignment with the spaces between adjacent air tubes and the hot gases are discharged upwardly through a series of discharge ports in each gas tube into the spaces between the air tubes.
  • each of the air tubes are coupled to a shaking device which operates to oscillate the air tubes within the waste material to further increase the efficiency of combustion.
  • the series of air tubes and gas tubes can be retrofit into existing incineration systems to further improve the combustion of waste material.
  • the air tubes and gas tubes can be combined into a single series of tubes passing through the waste material. In this manner, the system of the invention can be easily retrofit into existing incinerators to increase the operating efficiency.
  • the recirculated hot combustion gases contain a substantial proportion of hydrocarbons or combustible material, and the combustible material in the recirculat- ed gas is burned in the lower end of the combustion chamber within the mass of waste material, thus providing a more efficient and effective combustion.
  • the circulated combustion gases can be at a temperature in the neighborhood of 2200°F (1250°C)
  • the hot gases can aid in drying the wet waste material.
  • the recirculated hot gases contain fines from the combustion process and as the hot gases pass upwardly through the bed of waste material, the particulate material is filtered out, thus serving to reduce the amount of particulate material or fines which is discharged from the combustion chamber through the stack.
  • the combustion gases being discharged from the combustion chamber through the stack are passed through a scrubber containing a plurality of spaced vertical columns of refractory material which function as baffles.
  • Each column is preferably formed of a stack of refractory bricks which are supported from the lower wall of the combustion chamber.
  • the stacks of refractory bricks are arranged in a pattern to provide a tortuous path of flow for the combustion gases through the chamber, and prevent direct flow of the gases from the inlet to the outlet.
  • the stacks or baffles are arranged in a series of parallel rows with the flat faces of the stacks or baffles being normal or perpendicular to the gas flow.
  • baffles in each row are spaced apart a distance generally equal to the width of the baffles, and the baffles in each row are staggered with respect to baffles in adjacent row.
  • This arrangement and configuration of the stacks or baffles results in a high velocity flow of combustion gases between adjacent baffles and areas of low velocity or stagnation adjacent the front and rear surfaces of the baffles causing heavier particulate material to fall by gravity along the front and rear faces of the baffles for collection in a collection bin.
  • Lighter particulate material which may collect on the front and rear surfaces of the baffles, are automatically dislodged, and will also fall by gravity to the collection bin.
  • the use of the stacks of refractory bricks as the baffles to achieve the tortuous path of gas flow provides distinct advantages over systems using metal baffles.
  • the stacks of refractory bricks are lower in cost than heat resistant metals, such as Inconel.
  • the brick stacks also provide better heat resistance, have a lower coefficient of thermal expansion, and tend to hold the heat to provide a more uniform temperature in the scrubber chamber during fluctuations in combustion.
  • Fig. 1 is a side elevation of the incineration system of the invention
  • Fig. 2 is a vertical section of the incinerator
  • Fig. 3 is a view taken along line 3-3 of Fig. 2;
  • Fig. 4 is an enlarged vertical section showing arrangement of the air tubes and gas tubes
  • Fig. 5 is a horizontal section showing a portion of the scrubber chamber
  • Fig. 6 is a section taken along line 6-6 of Fig. 5;
  • FIG. 1 shows a pyrolytic incineration system including an outer supporting framework 1 , within which is mounted an incinerator 2 that defines a combustion chamber 3 containing waste material 4, such as garbage or trash.
  • waste material can be fed into the combustion chamber via a feeding unit 5, and ash can be automatically removed from the lower end of the combustion chamber 3 through operation of an ash removal unit 6.
  • Feeding unit 5 and ash removal unit 6 can be constructed as described in U.S. patent 4,674,417.
  • Waste material 4 can be ignited in combustion chamber 3 through use of a conventional gas burner unit, not shown, or alternately, a liquid fuel such as kerosene can be applied to the waste and ignited. Once the waste has started to burn, further fuel is not normally required.
  • incinerator 2 includes an outer shell 16 formed of steel or the like, and an inner refractory lining 17.
  • Combustion chamber 3 is closed and air for the pyrolytic combustion process is supplied through a plurality of generally parallel air tubes 18 which are located in the bottom of combustion chamber 3.
  • each air tube 18 is generally square in cross section and is formed with a plurality of outlet ports 19 which are located in the sides of the tube.
  • Ports 19 extend along the entire length of the tube and as shown in Fig. 4, one group of ports 19a is directed horizontally outward through each corner of the tube, while a second group of ports 19b is located in each side of the tube and faces upwardly, and a third and fourth group of ports 19c and 19d are located in each side of the tube and face downwardly toward the bottom of the combustion chamber 3.
  • the discharge side of pump 23 is connected through lines 24 to the lower passage 22b, while the upper outlet passage 22a is connected via return line 25 to a surge tank.
  • operation of water pump 23 will introduce cooling water into the lower passage 22b and water will flow through the lower passage to the downstream end of the air tube 18 and then through a connecting passage for return through upper passage 22a to the surge tank.
  • the cooling medium By the use of the cooling medium, the air being introduced into the combustion chamber will be maintained at a temperature below that which melts the air tubes 18.
  • each air tube 18 is closed, while the opposite end of each air tube is connected to a manifold or header 20 located outside of the outer shell 16. Pressurized air is supplied to manifold 20 via an air conduit 26 which is connected to the discharge side of a conventional blower 27. Operation of blower 27 will cause air to be delivered to the air tubes 18 and the air will then be discharged through outlet ports 19 into contact with the waste material 4.
  • a tubular member 28 having closed ends, is positioned in the upper end of the combustion chamber 3 beneath stack 7.
  • Tubular member 28 is provided with a plurality of inlet ports 29 which extend the length of the tubular member.
  • the central portion of tubular member 28 is connected to a conduit 30 which extends downwardly along one side of the combustion chamber, and the lower end of conduit 30 extends in sealed relation through the side wall of the incinerator and is connected to the suction side of a conventional blower 31.
  • blower 31 is connected through discharge conduit 32 to a manifold 33 which is located to the exterior of the lower end of combustion chamber 3.
  • a plurality of generally parallel gas 0 tubes 34 are connected to manifold 33, and the free end of each tube is closed and supported by the opposite wall of the incinerator 2.
  • Each gas tube 34 is provided with a plurality of outlet openings 35 in the upper portion of the tube, as best shown in Fig. 4.
  • Gas tubes 34 are preferably located in vertical alignment with the spaces between adjacent air tubes 18, so that the hot gases being discharged through the openings 35 5 will pass between the air tubes 18 and mix with the air being discharged from the air tubes.
  • the mixture of the combustible gas from each of the gas tubes 34 pass between the air tubes 18 such that the mixture of air and combustible gas supports combustion at each of the outlet ports 19.
  • the combination of the combust- o ible gas and air creates a flame at each of the outlet ports 19 which substantially aids in drying the waste material 4.
  • the combustion gases from the upper end of combustion chamber 3 may be at a temperature of about 1200°C, and because of these extreme temperatures, the conduits 30 and 32 are preferably formed of a temperature resistant 5 metal, such as Inconel.
  • recirculated combustion gases which still contain a substantial portion of combustible material, such as hydrocarbons, are passed upwardly through the mass of waste material 4 in contact with air being supplied though air tubes 18, thus burning the combustible material in the recirculated o gases to increase the efficiency of the combustion process.
  • the incinerator 2 when the incinerator 2 is initially filled with waste material 4, a small amount of liquid fuel such as kerosene is applied to the waste material 4 and ignited. Once the waste material 4 has started to burn, the waste material 4 gives off a combustible gas which rises into the upper portion of the combustion chamber 3 where a portion of the combustible gas enters the tubular member 28 through the inlet ports 29. Blower 31 recirculates the combustible gas through the series of gas tubes 34. Gas exiting the outlet openings 35 in each of the gas tubes 34 travels upward through the waste material 4 where it meets fresh air exiting outlet ports 19 contained in each of the air tubes 18.
  • a shaking system operates to slightly oscillate each of the air tubes 18 within the waste material 4. Since a small flame is often present at each of the outlet ports 19, it is desirable to slightly rotate the air tubes 18 such that the small flames at each outlet port 19 comes into contact with a new portion of the waste material periodically.
  • the shaking system 5 includes a hydraulic piston and a series of link arms which tend to oscillate the air tubes about 15°.
  • the hot gases being withdrawn from the combustion chamber through tubular member 28 will contain fines or particular material, and the upward flow of the hot gas through the waste material 4 will serve to o filter out the fines, thus reducing the amount of fines or particulate material that is discharged to the stack 7.
  • Scrubber unit 12 includes an outer housing or shell 36 formed of steel or the like, and a refractory lining 37. Mounted within housing 36 are a plurality of vertical baffles or columns 38, each formed of a stack of refractory bricks 39. Bricks 39 can be mortared together through use of a standard refractory mortar to provide the baffles or stacks 38.
  • each brick 39 of each stack or baffle 38 is supported on the lower wall 40 of housing 36, and wall 40, in turn, is supported by a plurality of crossbeams 41 , each of which is located beneath a row of the baffles 38.
  • each brick 39 is generally rectangular in shape, having front and rear faces that are located perpendicular or normal to the flow of gas through the scrubbing chamber 10. In practice, the bricks may be about 9 inches long by 4 inches wide, by 3 inches thick.
  • the stacks or baffles 38 are preferably positioned in a series of rows with the baffles in each row being spaced apart a distance generally equal to the length of the baffles.
  • the baffles of each row are located in alignment with the spaces between baffles in adjacent rows resulting in the combustion gas flowing in a non-linear, tortuous path through the scrubber chamber 10 as shown by the arrows in Fig. 5.
  • each baffle 38 extends within a recess in the refractory lining 37 and is spaced beneath the upper wall 42 of the scrubber housing as shown in Fig. 6.
  • This construction permits the stacks or baffles 38 to expand and contract during heating and cooling.
  • heavier particulate material in the gas will strike the forward faces of the baffles 38, and fall by gravity along the forward and rear faces through openings 43 in the lower wall 40, for collection in a hopper 44.
  • Openings 43 are located adjacent the front and rear faces of the lowermost bricks 39 of each stack, as seen in Fig. 6.
  • An outlet conduit 45 is mounted in the lower end of hopper 44 and flow through the outlet conduit 45 is controlled by a valve 46.
  • the use of the refractory bricks 39 to provide the baffles or columns 38 has distinct advantages over the use of metal baffles as used in the past.
  • the refractory bricks are able to withstand higher temperatures without distortion or warping, and have a smaller coefficient of thermal expansion than metal baffles.
  • the refractory bricks will hold the heat for a longer period of time than metal, thus 0 providing more uniform temperature conditions in the scrubber chamber 10, regardless of fluctuations in combustion.
  • a temperature sensing mechanism 47 can be located in the upper portion of combustion chamber 3 for controlling the operation of blower 31. More specifically, if the temperature in the upper end of combustion cham- 5 ber 3 falls below a pre-selected elevated range, the temperature sensing mechanism 47 will operate to increase the speed of blower 31 to correspondingly increase the volume of hot combustion gases being recirculated to the combustion chamber. Conversely, if the temperature in the combustion chamber rises above the pre-selected range, the sensing mechanism 47 will operate blower 31 to reduce or curtail the flow of o the hot combustion gases through conduits 30 and 32.
  • Figs. 7 and 8 show a modified form of the invention in which the baffles or stacks 48, similar to baffles 38, are each formed of a stack of hollow bricks 49 formed of a refractory material.
  • the central openings in bricks 49 define a vertical passage 50 which extends the full height of the 5 baffle.
  • Each brick 49 is provided with a plurality of outlets 51 which communicate with passage 50, and preferably outlets 51 are located in the ends of each brick 49, as shown in Fig. 8.
  • Upper wall 42 of scrubber unit 12 is formed with a series of openings 52, each of which communicates with the upper end of a vertical passage 50.
  • the air is discharged from outlets 51 in bricks 49 at right angles to the flow of combustion gases through scrubber chamber 10, thus resulting in turbulence and mixing to thereby provide more complete combustion of the combustible materials in the combustion gases.
  • the stacks 48 can be supported from the lower wall of the scrubber unit in the same manner as described with respect to the first embodiment, and the lower wall can be provided with openings, such as openings 43 previously described, through which the particulate material is discharged to hopper 44.
  • incinerator incorporating the recirculated gases is shown in conjunction with the scrubber unit 12, it is recognized that the recirculation system can be used with various types of incinerators and can be retrofitted to existing incinerators.

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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

L'invention concerne un système et un procédé d'incinération améliorée comprenant un incinérateur (2) définissant une chambre de combustion (3) contenant une masse de matière résiduelle (4). L'air de combustion de la matière résiduelle (4) est amené dans la chambre de combustion (3) en un point situé au-dessous de la matière résiduelle (4), par une pluralité de tubes d'air parallèles (18). Une partie des gaz chauds de combustion est extraite par l'extrémité supérieure de la chambre de combustion (3) au moyen d'une soufflante (31) et renvoyée à l'extrémité inférieure de la chambre de combustion (3) par une pluralité de tubes (34) de gaz, à un niveau situé au-dessous des tubes (18) d'air. Des hydrocarbures combustibles se trouvant dans les gaz de combustion sont brûlés à l'intérieur de la masse de matière résiduelle (4), ce qui à pour effet de rendre la combustion plus efficace et plus complète. Les gaz de combustion déchargés par la chambre de combustion (3) passent à travers un épurateur (36) dans lequel les gaz s'écoulent en un chemin non linéaire tortueux entre une pluralité de chicanes ou de colonnes (38) en matériau réfractaire. La matière particulaire se trouvant dans les gaz de combustion se dépose sur les chicanes et tombe en flocons des chicanes, sous l'effet de la gravité, jusque dans un site de récupération.
PCT/US1998/006555 1997-04-01 1998-04-01 Systeme et procede d'incineration reduisant la quantite de combustibles dans les gaz de combustion WO1998043754A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU68802/98A AU6880298A (en) 1997-04-01 1998-04-01 Combustion system and method reducing amount of combustibles in the exhaust gases

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83111097A 1997-04-01 1997-04-01
US08/831,110 1997-04-01

Publications (1)

Publication Number Publication Date
WO1998043754A1 true WO1998043754A1 (fr) 1998-10-08

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ID=25258292

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Application Number Title Priority Date Filing Date
PCT/US1998/006555 WO1998043754A1 (fr) 1997-04-01 1998-04-01 Systeme et procede d'incineration reduisant la quantite de combustibles dans les gaz de combustion

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AU (1) AU6880298A (fr)
WO (1) WO1998043754A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005080872A1 (fr) * 2004-02-24 2005-09-01 Prima Revenue Sdn Bhd Systeme de production de gaz combustible et incinerateur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168958A (en) * 1977-03-23 1979-09-25 Hartman Eugene W Smoke stack air washer
US4242972A (en) * 1978-12-22 1981-01-06 Guy Sicard Combustion system with partial recirculation of exhaust gases and feed mechanism therefor
US5156097A (en) * 1988-11-17 1992-10-20 Gerry Booth Combustion apparatus
US5241916A (en) * 1991-02-07 1993-09-07 Martin Gmbh Fur Umwelt- Und Energietechnik Procedure for supplying combustion air and a furnace therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168958A (en) * 1977-03-23 1979-09-25 Hartman Eugene W Smoke stack air washer
US4242972A (en) * 1978-12-22 1981-01-06 Guy Sicard Combustion system with partial recirculation of exhaust gases and feed mechanism therefor
US5156097A (en) * 1988-11-17 1992-10-20 Gerry Booth Combustion apparatus
US5241916A (en) * 1991-02-07 1993-09-07 Martin Gmbh Fur Umwelt- Und Energietechnik Procedure for supplying combustion air and a furnace therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005080872A1 (fr) * 2004-02-24 2005-09-01 Prima Revenue Sdn Bhd Systeme de production de gaz combustible et incinerateur
AU2004316153B2 (en) * 2004-02-24 2009-06-04 Prima Revenue Sdn Bhd Combustible gas production system and incinerator

Also Published As

Publication number Publication date
AU6880298A (en) 1998-10-22

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