Patents by Inventor Johannes W. Graat

Johannes W. Graat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4470798
    Abstract: This relates to a method of operating a burner under conditions of stoichiometric combustion, wherein liquid fuel and combustion air are combined in a essentially constant ratio within a mixing and atomizing chamber, whereby a negative pressure is produced within said chamber owing to the guiding and metering of the air, said negative pressure serving to draw in fuel into said chamber. Furthermore, the invention relates to a burner assembly for carrying out the method.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: September 11, 1984
    Inventors: Johannes W. Graat, Hans T. Remie, A. M. Verhagen
  • Patent number: 4334854
    Abstract: The present invention relates to a method of controlling a substantially stoichiometric combustion of liquid fuels in a burner assembly wherein a stream of compact or atomized fuel is produced by means of an orifice or nozzle (e.g. injection, pressure, rotary atomizing nozzle) and fed into a mixing and atomizing zone in accordance with the preferably adjustable, nozzle input pressure, wherein at least part of the combustion air as an atomizing medium is introduced from the side of the axis of the fuel stream, with the flow of such air being adapted to be controlled with respect to throughput (flow rate) and flow velocity, and including a subsequent combustion of the fuel/air mixture within a combustion zone downstream of said mixing zone.
    Type: Grant
    Filed: June 21, 1978
    Date of Patent: June 15, 1982
    Assignee: Smit Ovens Nijmegen B.V.
    Inventors: Johannes W. Graat, Hans J. Remie
  • Patent number: 4255115
    Abstract: A method of producing a hot gas flow by combustion of preferably liquid fuels, by the following steps:(a) atomizing the liquid fuel to form fine particles;(b) further atomizing the thus generated fuel particles with the aid of combustion air supplied as atomizing medium, and reducing the mean fuel particle diameter to less than one-half of the mean diameter obtained in step (a);(c) burning the fuel-air mixture within a flame cone extending on an axis A, under stoichiometric conditions or with an excess of oxygen within an air duct;(d) introducing a stream of cold air to be heated or of another medium, optionally including components adapted to be oxidized, in a plane E extending substantially perpendicularly to axis A.Further, the invention relates to a hot gas generator or incinerator for carrying out the method, comprising a straight air conducting pipe which has coaxially positioned therein a burner for liquid fuels, including a two-stage atomizing assembly for the liquid fuel.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: March 10, 1981
    Assignee: Smit Ovens Nijmegan B.V.
    Inventors: Johannes W. Graat, Hans T. Remie
  • Patent number: 4248806
    Abstract: An apparatus for producing oxygen-free combustion gases, comprising a combustion chamber provided with a cooling jacket or shell and wherein liquid or gaseous hydrocarbons are burnt with combustion air and subsequently cooled through spray cooling by water introduced through nozzles into the rear portion of the combustion chamber, whereupon secondary cooling and scrubbing take place within a secondary cooling zone subsequent to the plenum chamber of said combustion chamber and provided with a plurality of gas outlet ports. That spray heads are arranged in the region of said gas outlet port(s), to produce a spray stream or jet directed to said outlet ports. A chamber is connected to said outlet port which chamber is surrounded by a wall provided with at least one gas outlet port, with the stream or jet of said spray heads being aligned with said gas outlet ports.
    Type: Grant
    Filed: February 27, 1979
    Date of Patent: February 3, 1981
    Assignee: Holec Gas Generators
    Inventors: Johannes W. Graat, Hans T. Remie
  • Patent number: 4071322
    Abstract: Apparatus for the production of an inert gas wherein liquid of gaseous hydrocarbons are burnt within a combustion chamber with air, possibly with the admixture of a gaseous atomizing agent, especially steam, inert gas or air, whereby a first shock-like cooling is performed, which is followed by a second cooling step and a scrubbing with water or an aqueous solution of a temperature in the vicinity of the freezing point, and the gas treatment is finished with an adsorption drying.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: January 31, 1978
    Assignee: Smit Nijmegen B.V.
    Inventor: Johannes W. Graat
  • Patent number: 4049569
    Abstract: Process for the production of an inert gas wherein liquid or gaseous hydrocarbons are burnt within a combustion chamber with air, possible with the admixture of a gaseous atomizing agent, especially steam, gas inert gas or air, whereby a first shock-like cooling is performed, which is followed by a second cooling step and a scrubbing with water or an aqueous solution of a temperature in the vicinity of the freezing point, and the gas treatment is finished with an adsorption drying. The invention relates also to an apparatus for carrying out such process.
    Type: Grant
    Filed: September 26, 1975
    Date of Patent: September 20, 1977
    Assignee: Smit Nijmegen B.V.
    Inventor: Johannes W. Graat
  • Patent number: 3947217
    Abstract: Inert gas is produced by the combustion of hydrocarbon fuel and air in a combustion chamber. The gaseous product of the combustion is cooled in a scrubbing chamber.The amount of inert gas produced is measured, and in accordance therewith the fuel-to-air ratio of the combustion is controlled discontinuously between set time intervals.
    Type: Grant
    Filed: July 23, 1973
    Date of Patent: March 30, 1976
    Assignee: Smit Nijmegan B.V.
    Inventors: Johannes W. Graat, Johannes C. H. Pelser, Bart C. Hoornenborg