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US3601516A - Method for the combustion of thin films of liquid fuels, and a burner arrangement for realizing the method - Google Patents

Method for the combustion of thin films of liquid fuels, and a burner arrangement for realizing the method Download PDF

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Publication number
US3601516A
US3601516A US865006A US3601516DA US3601516A US 3601516 A US3601516 A US 3601516A US 865006 A US865006 A US 865006A US 3601516D A US3601516D A US 3601516DA US 3601516 A US3601516 A US 3601516A
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US
United States
Prior art keywords
burner
liquid fuel
fuel
combustion air
combustion
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
US865006A
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English (en)
Inventor
Karoly Somhegyi
Tamas Rapp
Gyorgy Sasvari
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.)
Nikex Nehezipari Kulkereskedelmi Vallalat
Original Assignee
Nikex Nehezipari Kulkereskedelmi Vallalat
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 Nikex Nehezipari Kulkereskedelmi Vallalat filed Critical Nikex Nehezipari Kulkereskedelmi Vallalat
Application granted granted Critical
Publication of US3601516A publication Critical patent/US3601516A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/002—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space spraying nozzle arranged within furnace openings
    • F23D11/004—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space spraying nozzle arranged within furnace openings for producing radiant heat

Definitions

  • Liquid fuel is spread and burned in a thin film on a solid surface, either by pressure of the liquid fuel itself, or else by pressure of a carrier gas. Combustion air is blown parallel along the liquid film. High specific surface of the fuel and high velocity of the fuel and air relative to each other are thus simultaneously achieved.
  • the present invention relates to combustion of thin films of liquid fuels, more particularly to methods and apparatus for the same.
  • burners for the combustion of liquid fuels are for the most part of one of two principal types: dish burners and atomizing burners.
  • dish burners liquid fuel is fed from below and is heated to vaporize the same.
  • the emitted vapors are mixed and burned with air introduced through apertures on the sidewalls of the dish.
  • the air flows essentially perpendicular to the surface of the liquid, and as the quantity and the surface of area of the liquid are necessarily limited, the efficiency is low.
  • Atomizing burners finely divide the liquid fuel and the droplets are admixed with air.
  • the efficiency of such burners varies as the specific area of the liquid fuel and the relative velocity between the air and the fuel. The reason for the low efficiency of dish bumers will thus be apparent.
  • atomizing burners are of undesirably low efficiency, because a high relative velocity of fuel and air cannot be effected: the droplets of fuel are carried along by the airstream so that there is little relative movement between the air and the droplets.
  • the long flames produced by atomizing burners are attributable to this phenomenon: the droplets burn relatively slowly as they are carried along a long path in the air stream.
  • Another object of the present invention is the provision of apparatus for the practice of the above method, which will be relatively simple and inexpensive to manufacture, easy to install, operate, maintain and repair, and rugged and durable in use.
  • the present invention provides a combination of high specific surface of the fuel and high relative velocity between the air and the fuel, by spreading the fuel in a thin film on a solid surface by means of fluid pressure, that is, either by the pressure of the liquid fuel itself, or by the pressure of a carrier gas. At the same time, combustion air is blown along the solid surface parallel to the film.
  • the thin film has high specific surface; while the air can be moved at a desired high velocity thereby to effect substantially flameless combustion of the fluid fuel with high efficiency.
  • FIG. 1 is a fragmentary side cross-sectional view of a burner according to the present invention.
  • FIG. 2 is a partial cross-sectional view of the burner of FIG. 1, on the plane A ofFIG. 1.
  • a burner according to the present invention by which the method of the present invention may be practiced, comprising a refractory body 1 having a toric surface 2 which is a figure of revolution about the axis 3 of the burner.
  • the tangent to a point 4 on surface 2 is shown at 5; and the angle a between tangent 5 and a line 6 parallel to axis 3, increases progressively and regularly in a radially outward direction.
  • a metallic body 7 is disposed centrally of refractory body 1 and comprises the inlet and outlet ducts for liquid fuel and air, and also a carrier gas if a carrier gas is used.
  • a liquid fuel which is oil in the illustrated embodiment, enters at 8 through a screw-threaded connector 9 and flows into an annular distributing chamber 10. From chamber 10, the oil flows through a plurality of ducts 11 to circular channel 12 and thence out through a circular outlet slot 13.
  • a carrier gas such as air under pressure enters at 14 and flows through a screw-threaded fitting 15 to a circular chamber 16, and then through parallel channels 17 to a circular channel 18. Finally, combustion air enters at 19 and passes through a threaded fitting 20.
  • Parallel channels 21 are defined by a centrally disposed spider which has a mushroom-shaped head or deflector 22 that defines on its underside a chamber 23 that is progressively more restricted in the direction of airflow and that curves outwardly and then downwardly as seen in FIG. 1 and terminates in an annular outlet slot 24.
  • liquid fuel emerges from the slot 13 and is blown in a thin film radially outwardly across surface 2 by means of the carrier gas emerging from channel 18. If no carrier gas is used, then reliance is had on the pressure of the liquid fuel, to throw the liquid fuel out in' a thin film across surface 2.
  • the combustion air emerging from slot 24 then moves over the thin film with any desired relative velocity.
  • Ignition means may also be provided for igniting the resulting mixture of fuel vapors and air.
  • the burner may be set in the wall of a combustion chamber.
  • the liquid fuel is introduced on the surface of the solid body at its own fluid pressure or, if in a carrier gas, at the pressure of the carrier gas.
  • the burner has three inlet ducts but only two apertures or slots through which the gases or fluid arrive at the concave surface of the refractory solid body.
  • One of the inlets is for liquid fuel, another for carrier gases, and a third for combustion air.
  • the liquid fuel and carrier gas have a common outlet, and this is arranged quite close to the surface of the refractory body; whereas the aperture for admitting the combustion air is disposed somewhat farther away from the surface of the refractory body.
  • the direction of the streams of fuel and gas is tangential to the refractory surface at the point of impingement thereon.
  • combustion air is emitted from points closely adjacent and in the same direction as the liquid fuel.
  • a method of burning liquid fuel comprising forming a film of liquid fuel on a solid surface, blowing combustion air along and parallel to said surface to form a mixture of combustion air and fuel vapors, the liquid fuel and the combustion air emanating from points close to each other and being directed in the same direction along said surface, projecting said liquid fuel and a carrier gas for said liquid fuel from a common outlet therefor which is separate from the outlet for said combustion air, and combusting said mixture.
  • a burner for the combustion of liquid fuels in a gas stream having a solid surface, means for separately introducing into said burner a liquid fuel, a carrier gas for spreading said liquid fuel in a thin film on said surface, and combustion air, said burner having a common outlet for said carrier gas and said liquid fuel for directing said liquid fuel along said surface in a thin film, said burner having a separate outlet for said combustion air for directing said combustion air along the surface of saidthin film.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Spray-Type Burners (AREA)
US865006A 1968-10-11 1969-10-09 Method for the combustion of thin films of liquid fuels, and a burner arrangement for realizing the method Expired - Lifetime US3601516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUMA001895 1968-10-11

Publications (1)

Publication Number Publication Date
US3601516A true US3601516A (en) 1971-08-24

Family

ID=10998422

Family Applications (1)

Application Number Title Priority Date Filing Date
US865006A Expired - Lifetime US3601516A (en) 1968-10-11 1969-10-09 Method for the combustion of thin films of liquid fuels, and a burner arrangement for realizing the method

Country Status (6)

Country Link
US (1) US3601516A (es)
BE (1) BE731592A (es)
ES (1) ES365924A1 (es)
FI (1) FI52248C (es)
NL (1) NL160649C (es)
NO (1) NO126240B (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768961A (en) * 1971-10-29 1973-10-30 Midland Ross Corp Combustion apparatus
US3834855A (en) * 1971-05-20 1974-09-10 Ppg Industries Inc Method for disposal of liquid waste
US20120040296A1 (en) * 2010-08-10 2012-02-16 Air Products And Chemicals, Inc. Combustion of Oil Floating on Water
WO2014153564A1 (en) * 2013-03-22 2014-09-25 Safarik Charles Robert Systems, methods, and apparatuses for providing viscous fluid in a particular format and implementations thereof
US10173231B2 (en) 2013-03-22 2019-01-08 Charles Robert Safarik Systems, methods, and apparatuses for providing viscous fluid in a particular format and implementations thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1517614A (en) * 1924-04-07 1924-12-02 Carter Parke Oil burner
US2423808A (en) * 1941-02-06 1947-07-08 Miller Co Method of and apparatus for burning liquid fuel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1517614A (en) * 1924-04-07 1924-12-02 Carter Parke Oil burner
US2423808A (en) * 1941-02-06 1947-07-08 Miller Co Method of and apparatus for burning liquid fuel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834855A (en) * 1971-05-20 1974-09-10 Ppg Industries Inc Method for disposal of liquid waste
US3768961A (en) * 1971-10-29 1973-10-30 Midland Ross Corp Combustion apparatus
US20120040296A1 (en) * 2010-08-10 2012-02-16 Air Products And Chemicals, Inc. Combustion of Oil Floating on Water
US8366439B2 (en) * 2010-08-10 2013-02-05 Air Products And Chemicals, Inc. Combustion of oil floating on water
WO2014153564A1 (en) * 2013-03-22 2014-09-25 Safarik Charles Robert Systems, methods, and apparatuses for providing viscous fluid in a particular format and implementations thereof
US9861994B2 (en) 2013-03-22 2018-01-09 Charles Robert Safarik Systems, methods, and apparatuses for providing viscous fluid in a particular format and implementations thereof
US10173231B2 (en) 2013-03-22 2019-01-08 Charles Robert Safarik Systems, methods, and apparatuses for providing viscous fluid in a particular format and implementations thereof

Also Published As

Publication number Publication date
FI52248B (es) 1977-03-31
NO126240B (es) 1973-01-08
NL160649B (nl) 1979-06-15
FI52248C (fi) 1977-07-11
NL6905582A (es) 1970-04-14
BE731592A (es) 1969-10-01
ES365924A1 (es) 1971-03-16
NL160649C (nl) 1979-11-15

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