US3892519A - Liquid bubble screen seal for controlling combustible gases - Google Patents

Liquid bubble screen seal for controlling combustible gases Download PDF

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Publication number
US3892519A
US3892519A US460948A US46094874A US3892519A US 3892519 A US3892519 A US 3892519A US 460948 A US460948 A US 460948A US 46094874 A US46094874 A US 46094874A US 3892519 A US3892519 A US 3892519A
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US
United States
Prior art keywords
gas
tank
water
liquid
annular space
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 - Lifetime
Application number
US460948A
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English (en)
Inventor
Robert D Reed
Eugene C Mcgill
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.)
KGI Inc
Original Assignee
John Zink Co
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 John Zink Co filed Critical John Zink Co
Priority to US460948A priority Critical patent/US3892519A/en
Priority to GB2468074A priority patent/GB1433985A/en
Priority to CA203,174A priority patent/CA1013251A/en
Priority to FR7425089A priority patent/FR2267520B1/fr
Priority to IT52296/74A priority patent/IT1018731B/it
Priority to DE2437136A priority patent/DE2437136A1/de
Priority to NL7410403A priority patent/NL167761C/xx
Priority to JP9602574A priority patent/JPS5426734B2/ja
Application granted granted Critical
Publication of US3892519A publication Critical patent/US3892519A/en
Assigned to KOCH ENGINEERING COMPANY, INC. reassignment KOCH ENGINEERING COMPANY, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: JOHN ZINK COMPANY
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23MCASINGS, 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
    • F23M11/00Safety arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/72Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82Preventing flashback or blowback
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/08Incinerators 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

Definitions

  • ABSTRACT This abstract describes a burner system in which gas is flowed into a combustion chamber through a water barrier in such a way that the gas is forced to bubble 9 Claims, 2 Drawing Figures GAS SHEET mm mm km vw mm NM v Wm R K N ⁇ Mm ⁇ m NW NN LIQUID BUBBLE SCREEN SEAL FOR CONTROLLING COMBUSTIBLE GASES BACKGROUND OF THE INVENTION
  • This invention lies in the field of gas flaring apparatus. Still more particularly, it is concerned with the flaring of gases which are highly detonatable, when mixed with air in the proper proportion.
  • water trap interposed between the entering gas line and the combustion zone, where the gas meets an entering air supply.
  • the purposes of the water trap is to prevent the formation of a continuous column or thread of gas from the inlet pipe to the combustion zone, through which a detonation wave or flame front can progress backwardly along this thread or column of gas, and into the gas line and back to the source of the gas.
  • the flame front can travel countercurrent to the gas flow when there is uninterrupted flow of gas through the liquid to reach the source of the gas.
  • the flame front cannot pass through the liquid interval, and burning is confined to the space downstream of the liquid surface.
  • a characteristic of liquid seals as in the prior art is that gases in progress toward the liquid through tubular means must provide for the tubular entry at a point above the liquid surface. This is because liquids seek their own levels and if tubular gas entry is below the liquid level the liquid will flow back into the tubular means in such quantity as to prevent a liquid seal above the tubular entry through drain away of liquid.
  • This device can be used safely for burning of discharged detonatable gases either with no appurtenant apparatus or in conjunction with a refractory lined vertically projecting structure for discharge of combustion products significantly above grade level, through indraft of adequate air for burning.
  • the combustion gases discharged are products of complete combustion.
  • it is optional to provide adequate pilot means to ignite the gases as they depart the liquid surface.
  • the gas passage is formed as a pair of concentric annular spaces, the gas passing up through the outer space, over a barrier, and down through the inner space, from which it flows into the bottom of the water chamber through a plurality of gas flow ports at the lower level of the water chamber. While the operation is described in terms of water, any other suitable liquid can, of course, be used.
  • a large supply of water at controlled level is provided so as to replenish the water in the trap which will be normally evaporated by being intermixed with the passage of gas, and evaporated due to the heat of the flame above its surface. There will also be loss of water due to the bubbling and turbulence of the water itself.
  • the construction of the water trap provides means for minimizing the turbulence. This comprises two baffles, one being an annular horizontal ring of selected radial width, and a large central opening, through which the major portion of the gas is directed. The central opening is covered by an overhanging sheet of perforated metal through the perforations of which the gas must pass to be carried upward through the water to its surface.
  • FIG. 1 shows in vertical cross section one embodiment of the water trap portion of the apparatus.
  • FIG. 2 shows a vertical cross section of the complete flaring combustion apparatus, including the water trap portion of FIG. 1.
  • FIG. I there is shown a water trap system for the passage of gas into a combustion chamber. It is indicated generally by the numeral 10 and comprises an outer cylindrical wall 12 and a circular plate base [4 with a pipe 16 at the axis of the cylinder for the introduction of the gas. There is a second horizontal plate 40 spaced above the bottom plate 14. This supports a cylindrical shell 37 which is welded to the plate 40 and forces the incoming gas to flow upwardly through the annular space 31, be-
  • a tank 52 of liquid which will be described as water for convenience. connected by a pipe 56 which passes up through the bottom plate 14 and is welded through the plate 40 at point 60.
  • Water is maintained at a level 62 in the tank 52, and therefore, seeks its own lever 61 which is the same as 62 inside of the inner wall 38. Water also rises to the level 6] in the space between the two walls 38 and 37 when no gas flows.
  • the gas flowing into the water at a selected depth below the surface is controlled by a pair of baffles.
  • one of which. 25. is in the form of an annular flat ring with a central opening 67 supported on legs 28 at a selected level above the bottom plate 40.
  • This upper plate 30 has a plurality of small openings 32 distributed over its area.
  • the plate 30 is supported by legs 34 above the annular plate 25.
  • the water level 61 is maintained at a selected height above the level of the plate 30, so that gas flowing in accordance with arrows 23 progress toward the center of the water space in accordance with arrows 24 and up through the perforations in accordance with arrows 64 until they break through the surface 61 and pass upwardly within the cylindrical wall through the space 66.
  • the flowing gas be maintained at all times below a temperature at which it would spontaneously combust and therefore. since there will be hot gas and flame in the space 66, the space between the wall 46 and the outer wall 38 is filled with ceramic insulation 44 and also, if preferred, with a thin layer of ceramic wool insulation 42.
  • This combination, or other suitable combination of insulation serves to maintain the entering gas at a low enough temperature that it will not spontaneously combust but will flow in the space 33 inside the wall 38 and pass through the baffles and upward through the liquid as trains of water-separated bubbles.
  • FIG. I there is a design of a water trap that provides a.
  • FIG. 2 there is shown a flare tower indicated by the numeral which comprises an outer vertical cylinder 72 which rests on a flange 75 on the earth.
  • the water trap apparatus 10 described in HO. 1 is installed in the bottom end of this tower 70, with an annular space 87 between the water trap 10 and the outer wall of the tower. Air enters the bottom of the tower through a plurality of openings 74.
  • the water trap apparatus can be supported from the outer wall of the tower by means of welded braces 76 or other suitable means.
  • the air meets the rising gas column in accordance with arrows 92 and they are mixed and ignited by the flame 50 of the pilot light 48.
  • the burning gases pass upward in accordance with the arrows 93 through a portion of the flare tower that is lined by ceramic means 88. Containment of hot gases as 93 within the flare tower develops draft or less-than-atmospheric pressure above 10 to cause inflow of air as recited.
  • the burning gases are completely combusted and pass into the atmosphere through the top. which is not shown.
  • the water supply can conveniently be provided in the form of an annular tank 78 welded to the outside of the tower 72 near the base thereof. Water enters through the inlet 80 through a control orifice 79 in the outer wall of the tank. A pipe 81 is welded in the bottom of the tank of a vertical dimension such as to ensure that there will be adequate water level and that the level will be maintained at or near the top of the overflow pipe 8]. A pipe 56 is welded into the bottom of the tank and passes into the water trap assembly 10 in accordance with the pipe 56 of FIG. 1. The pipe 16 provides the gas flow as indicated by the arrow 18.
  • the combination of the water trap and combustion device 10 with a continuing lined tower 72 provides a taller high-temperature passage for the burning gases to ensure complete combustion. Also the tower 70 ensures the dispersal of the products of combustion at a high level, so that there would be a distribution over a wide area, and therefore lower concentration of contaminants at any point at ground level.
  • Apparatus for controlled burning of combustible gases comprising:
  • baffle means inside said tank above said openings but below the surface of said liquid, said baffle means including at least a first horizontal plate with a plurality of spaced small openings;
  • cylindrical shell means inside of said tank above the surface of said liquid, and thermal insulation means between said shell and the wall of said tank;
  • the apparatus as in claim 1 including a second wall outside of said first wall forming a second annular space communicating with the top of said first annular space, and means to supply said gas to the bottom of said second annular space 3.
  • the apparatus as in claim 2 including a circular plate welded to the bottom of said second wall, and spaced below the bottom of said cylindrical tank, the space between said plate and said bottom communicating with said second annular space, and means to inject said gas into said space.
  • the apparatus as in claim 1 including a second baffle in the form of an annular plate of outer diameter greater than the diameter of said first plate. with a central opening of lesser diameter than said first plate, said second baffle mounted between said first plate and the bottom of said tank.
  • the apparatus as in claim 1 including a supply tank of said liquid and means to maintain the level of liquid in said cylindrical tank and said supply tank the same.
  • the apparatus as in claim 1 including a cylindrical tower of larger diameter than, and surrounding, said apparatus for burning and means to pass air upwardly through the annular space between said apparatus for burning and said tower.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Incineration Of Waste (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gas Burners (AREA)
  • Chimneys And Flues (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US460948A 1974-04-15 1974-04-15 Liquid bubble screen seal for controlling combustible gases Expired - Lifetime US3892519A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US460948A US3892519A (en) 1974-04-15 1974-04-15 Liquid bubble screen seal for controlling combustible gases
GB2468074A GB1433985A (en) 1974-04-15 1974-06-04 Liquid bubble screen seal for controlling combustible gases
CA203,174A CA1013251A (en) 1974-04-15 1974-06-24 Liquid bubble screen seal for controlling combustible gases
FR7425089A FR2267520B1 (pl) 1974-04-15 1974-07-18
IT52296/74A IT1018731B (it) 1974-04-15 1974-07-26 Apparecchio per la bruciatura di gas combustibili
DE2437136A DE2437136A1 (de) 1974-04-15 1974-08-01 Vorrichtung fuer die gesteuerte verbrennung von verbrennbaren gasen
NL7410403A NL167761C (nl) 1974-04-15 1974-08-02 Inrichting voor het regelbaar verbranden van brandbare gassen.
JP9602574A JPS5426734B2 (pl) 1974-04-15 1974-08-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US460948A US3892519A (en) 1974-04-15 1974-04-15 Liquid bubble screen seal for controlling combustible gases

Publications (1)

Publication Number Publication Date
US3892519A true US3892519A (en) 1975-07-01

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US460948A Expired - Lifetime US3892519A (en) 1974-04-15 1974-04-15 Liquid bubble screen seal for controlling combustible gases

Country Status (8)

Country Link
US (1) US3892519A (pl)
JP (1) JPS5426734B2 (pl)
CA (1) CA1013251A (pl)
DE (1) DE2437136A1 (pl)
FR (1) FR2267520B1 (pl)
GB (1) GB1433985A (pl)
IT (1) IT1018731B (pl)
NL (1) NL167761C (pl)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994668A (en) * 1974-08-21 1976-11-30 Robert Bosch G.M.B.H. Protectively doused valving device for a combustion chamber
US4090838A (en) * 1976-03-17 1978-05-23 Kenneth R. Schena Catalyst generator
US4120637A (en) * 1976-10-26 1978-10-17 John Zink Company Hot water spray injection for smoke suppression in flares
US4869852A (en) * 1988-01-22 1989-09-26 Mooers Products, Inc. Diffuser apparatus
EP0645585A2 (de) * 1993-09-17 1995-03-29 Linde Aktiengesellschaft Verfahren zum Betreiben einer Tauchung und Tauchung
WO1996010719A1 (en) * 1994-10-03 1996-04-11 Harald Hystad A device for burning gas from a production plant for oil or gas
US5509807A (en) * 1993-04-01 1996-04-23 Cancode Safety Services, Inc. Conflagration simulator and method of operating
US5700142A (en) * 1996-06-06 1997-12-23 Symtron Systems, Inc. Liquid pilot assembly
EP0813029A3 (de) * 1996-06-10 1998-12-02 Joh. Vaillant GmbH u. Co. Verfahren zum Verbrennen eines gasförmigen Brennstoff-Luft-Gemisches
WO1999000184A2 (de) * 1997-06-25 1999-01-07 Metallgesellschaft Aktiengesellschaft Vorrichtung zur durchführung von gasreaktionen, verwendung der vorrichtung und verfahren zum betreiben der vorrichtung
US5919036A (en) * 1996-12-02 1999-07-06 O'brien; Alan Method and apparatus for burning combustible gases
US5967134A (en) * 1997-08-04 1999-10-19 Visionary Solutions, Llc Liquid gas grill apparatus and method
US6192881B1 (en) * 1998-12-30 2001-02-27 Ronald Scott Nix Portable fireplace
US6356613B1 (en) * 1997-02-07 2002-03-12 Siemens Aktiengesellschaft Apparatus for the recombination of hydrogen in a gas mixture
US20060166152A1 (en) * 2005-01-21 2006-07-27 Damien Feger Gas incinerator installed on a liquefied gas tanker ship or a liquefied gas terminal
US20070092846A1 (en) * 1991-11-28 2007-04-26 Claude Bernardy Method and device for producing a flame, particulary for coloured flame lamps
DE102006048061B3 (de) * 2006-10-11 2008-04-30 Lurgi Ag Wasserschloss einer Gasfackel
US20090277439A1 (en) * 2005-09-30 2009-11-12 Indesit Company S.P.A. Cooking Top With Gas Burner Comprising a Semi-Permeable Element
WO2010107974A1 (en) * 2009-03-18 2010-09-23 Polak Robert B Carbon dioxide removal systems
DE102010053378A1 (de) 2010-10-02 2012-04-05 Günther Honig Beleuchtungseinrichtung
US20140308187A1 (en) * 2013-04-15 2014-10-16 Airgard, Inc. Systems and methods to prevent back-flash in an abatement system
US9080434B2 (en) 2012-06-13 2015-07-14 Red Leaf Resources, Inc. Access system for a pressure controlled environment
EP3568636A4 (en) * 2017-01-16 2020-09-09 Energy2Cleanair Holdings PTY Ltd As Trustee For Energy2Cleanair Unit trust POST COMBUSTION DEVICE AND PROCEDURE

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408375B (de) * 1999-09-15 2001-11-26 Vaillant Gmbh Verfahren zum verbrennen eines gas-luft-gemisches in einem brennraum und vorrichtung zur durchführung des verfahrens
CN107676780B (zh) * 2016-08-02 2023-10-31 上海机动车检测认证技术研究中心有限公司 一种燃烧装置
CN112413636A (zh) * 2020-11-17 2021-02-26 湖南天欣科技股份有限公司 一种防止煤粉燃烧炉炸炉的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1087112A (en) * 1908-12-14 1914-02-17 Richard Fiedler Method of producing flame on the surface of water.
US1737624A (en) * 1926-12-20 1929-12-03 Canada Gypsum And Alabastine C Apparatus for the production of dense foam
US2970589A (en) * 1958-02-25 1961-02-07 Walton W Cushman Food hydration and cooking assembly
US3212533A (en) * 1962-03-27 1965-10-19 Sylvania Electric Prod Method of and apparatus for feeding articles
US3331194A (en) * 1965-12-08 1967-07-18 Zink Co John Flare stack structure and apparatus treating and controlling flow of gases to and from stack

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1087112A (en) * 1908-12-14 1914-02-17 Richard Fiedler Method of producing flame on the surface of water.
US1737624A (en) * 1926-12-20 1929-12-03 Canada Gypsum And Alabastine C Apparatus for the production of dense foam
US2970589A (en) * 1958-02-25 1961-02-07 Walton W Cushman Food hydration and cooking assembly
US3212533A (en) * 1962-03-27 1965-10-19 Sylvania Electric Prod Method of and apparatus for feeding articles
US3331194A (en) * 1965-12-08 1967-07-18 Zink Co John Flare stack structure and apparatus treating and controlling flow of gases to and from stack

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994668A (en) * 1974-08-21 1976-11-30 Robert Bosch G.M.B.H. Protectively doused valving device for a combustion chamber
US4090838A (en) * 1976-03-17 1978-05-23 Kenneth R. Schena Catalyst generator
US4120637A (en) * 1976-10-26 1978-10-17 John Zink Company Hot water spray injection for smoke suppression in flares
US4869852A (en) * 1988-01-22 1989-09-26 Mooers Products, Inc. Diffuser apparatus
US20070092846A1 (en) * 1991-11-28 2007-04-26 Claude Bernardy Method and device for producing a flame, particulary for coloured flame lamps
US5509807A (en) * 1993-04-01 1996-04-23 Cancode Safety Services, Inc. Conflagration simulator and method of operating
EP0645585A2 (de) * 1993-09-17 1995-03-29 Linde Aktiengesellschaft Verfahren zum Betreiben einer Tauchung und Tauchung
EP0645585A3 (de) * 1993-09-17 1995-08-23 Linde Ag Verfahren zum Betreiben einer Tauchung und Tauchung.
GB2310490A (en) * 1994-10-03 1997-08-27 Harald Hystad A device for burning gas from a production plant for oil or gas
GB2310490B (en) * 1994-10-03 1998-07-29 Harald Hystad A device for burning gas from a production plant for oil or gas
US5810578A (en) * 1994-10-03 1998-09-22 Hystad, Deceased; Harald Device for burning gas from a production plant for oil or gas
WO1996010719A1 (en) * 1994-10-03 1996-04-11 Harald Hystad A device for burning gas from a production plant for oil or gas
US5700142A (en) * 1996-06-06 1997-12-23 Symtron Systems, Inc. Liquid pilot assembly
EP0813029A3 (de) * 1996-06-10 1998-12-02 Joh. Vaillant GmbH u. Co. Verfahren zum Verbrennen eines gasförmigen Brennstoff-Luft-Gemisches
US5919036A (en) * 1996-12-02 1999-07-06 O'brien; Alan Method and apparatus for burning combustible gases
US6356613B1 (en) * 1997-02-07 2002-03-12 Siemens Aktiengesellschaft Apparatus for the recombination of hydrogen in a gas mixture
WO1999000184A2 (de) * 1997-06-25 1999-01-07 Metallgesellschaft Aktiengesellschaft Vorrichtung zur durchführung von gasreaktionen, verwendung der vorrichtung und verfahren zum betreiben der vorrichtung
WO1999000184A3 (de) * 1997-06-25 1999-04-29 Metallgesellschaft Ag Vorrichtung zur durchführung von gasreaktionen, verwendung der vorrichtung und verfahren zum betreiben der vorrichtung
US5967134A (en) * 1997-08-04 1999-10-19 Visionary Solutions, Llc Liquid gas grill apparatus and method
US6192881B1 (en) * 1998-12-30 2001-02-27 Ronald Scott Nix Portable fireplace
EP1684013A3 (fr) * 2005-01-21 2014-08-27 Alfa Laval Aalborg A/S Incinérateur de gaz installé sur un navire de transport de gaz liquéfié ou un terminal de gaz liquéfié
FR2881209A1 (fr) * 2005-01-21 2006-07-28 Snecma Moteurs Sa Incinerateur de gaz installe sur un navire de transport de gaz liquefie
US7836835B2 (en) 2005-01-21 2010-11-23 Snecma Gas incinerator installed on a liquefied gas tanker ship or a liquefied gas terminal
US20060166152A1 (en) * 2005-01-21 2006-07-27 Damien Feger Gas incinerator installed on a liquefied gas tanker ship or a liquefied gas terminal
US20090277439A1 (en) * 2005-09-30 2009-11-12 Indesit Company S.P.A. Cooking Top With Gas Burner Comprising a Semi-Permeable Element
US8662069B2 (en) * 2005-09-30 2014-03-04 Indesit Company S.P.A. Cooking top with gas burner comprising a semi-permeable element
DE102006048061B3 (de) * 2006-10-11 2008-04-30 Lurgi Ag Wasserschloss einer Gasfackel
WO2010107974A1 (en) * 2009-03-18 2010-09-23 Polak Robert B Carbon dioxide removal systems
EP2408539A1 (en) * 2009-03-18 2012-01-25 Coaway LLC Carbon dioxide removal systems
EP2408539A4 (en) * 2009-03-18 2012-11-28 Coaway Llc CARBON DIOXIDE REMOVAL SYSTEMS
DE102010053378A1 (de) 2010-10-02 2012-04-05 Günther Honig Beleuchtungseinrichtung
US9080434B2 (en) 2012-06-13 2015-07-14 Red Leaf Resources, Inc. Access system for a pressure controlled environment
US20140308187A1 (en) * 2013-04-15 2014-10-16 Airgard, Inc. Systems and methods to prevent back-flash in an abatement system
US9138679B2 (en) * 2013-04-15 2015-09-22 Airgard, Inc. Systems and methods to prevent back-flash in an abatement system
EP3568636A4 (en) * 2017-01-16 2020-09-09 Energy2Cleanair Holdings PTY Ltd As Trustee For Energy2Cleanair Unit trust POST COMBUSTION DEVICE AND PROCEDURE

Also Published As

Publication number Publication date
GB1433985A (en) 1976-04-28
FR2267520A1 (pl) 1975-11-07
JPS5426734B2 (pl) 1979-09-05
JPS50136737A (pl) 1975-10-30
DE2437136A1 (de) 1975-10-30
NL167761B (nl) 1981-08-17
NL7410403A (nl) 1975-10-17
FR2267520B1 (pl) 1978-04-28
NL167761C (nl) 1982-01-18
CA1013251A (en) 1977-07-05
IT1018731B (it) 1977-10-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KOCH ENGINEERING COMPANY, INC., KANSAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOHN ZINK COMPANY;REEL/FRAME:005249/0775

Effective date: 19891004