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Flameless combustion heaterFlameless combustion heater description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090136879, Flameless combustion heater. Brief Patent Description - Full Patent Description - Patent Application Claims
This application claims the benefit of U.S. Provisional Application No. 60/950,938, filed Jul. 20, 2007 which is hereby incorporated by reference. This invention relates to a flameless combustion heater and a method for providing heat to a process. Flameless combustion heaters are described in U.S. Pat. No. 7,025,940. The patent describes a process heater utilizing flameless combustion, which is accomplished by preheating a fuel and combustion air to a temperature above the auto-ignition temperature of the mixture. The fuel is introduced in relatively small increments over time through a plurality of orifices in a fuel gas conduit, which provide communication between the fuel gas conduit and an oxidation reaction chamber. As described in the patent, a process chamber is in heat exchange relationship with the oxidation reaction chamber. Flameless combustion heaters can encounter problems related to the fuel conduit and the openings that provide for communication from within the fuel gas conduit to the oxidation reaction chamber. Conventional flameless combustion heaters have openings that have a longitudinal axis perpendicular to the inner surface of the oxidation conduit. The fuel passing through these perpendicular openings has a tendency to impinge directly on the inner surface of the oxidation conduit. Thus, a minimum distance is typically maintained between the outside of the fuel conduit and the inside of the oxidation conduit to reduce hot spots on the oxidation conduit wall. The oxidant flow may be increased to address this tendency to impinge, but that results in disadvantages such as excessive pressure drop. Further, the fuel exiting the perpendicular openings may not mix well with the oxidant. This incomplete mixing may occur immediately downstream of the opening. The heat provided by the flameless combustion is to a certain extent typically concentrated in the same radial orientation and directly downstream of the opening. This can result in uneven heating of the heater materials of construction that leads to thermal expansion that tends to bend the fuel and oxidation conduits. Additionally, this results in uneven heating of the material to be heated by the heater. The invention provides a flameless combustion heater comprising an oxidation conduit and a fuel conduit having a plurality of openings that provide fluid communication from within the fuel conduit to the oxidation conduit wherein the longitudinal axis of at least one opening forms an oblique angle with the inner surface of the oxidation conduit. The invention further provides a method for providing heat to a process conduit comprising: providing an oxidation conduit; providing a fuel conduit having a plurality of openings that provide fluid communication from within the fuel conduit to the oxidation conduit wherein the longitudinal axis of at least one opening forms an oblique angle with the inner surface of the oxidation conduit; providing a process conduit in a heat exchange relationship with the oxidation conduit; introducing fuel into the fuel conduit; introducing an oxidant into the oxidation conduit; and introducing the fuel into the oxidation conduit through the plurality of openings. Continue reading about Flameless combustion heater... Full patent description for Flameless combustion heater Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Flameless combustion heater patent application. Patent Applications in related categories: 20090280442 - Device and method of combusting solid fuel with oxygen - The present invention is a method of combustion of a solid fuel stream with oxygen. The present invention includes introducing a first stream, comprising a first portion of substantially pure oxygen, into a first conduit. The present invention includes introducing a second stream, comprising a solid fuel stream and a ... 20090280442 - Device and method of combusting solid fuel with oxygen - The present invention is a method of combustion of a solid fuel stream with oxygen. The present invention includes introducing a first stream, comprising a first portion of substantially pure oxygen, into a first conduit. The present invention includes introducing a second stream, comprising a solid fuel stream and a ... ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Flameless combustion heater or other areas of interest. ### Previous Patent Application: Topcoat composition, alkali developer-soluble topcoat film using the composition and pattern forming method using the same Next Patent Application: Method of operating a pyrolysis heater for reduced nox Industry Class: Combustion ### FreshPatents.com Support Thank you for viewing the Flameless combustion heater patent info. IP-related news and info Results in 2.56782 seconds Other interesting Feshpatents.com categories: Electronics: Semiconductor , Audio , Illumination , Connectors , Crypto , paws |
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