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Submerged combustion burners, submerged combustion glass melters including the burners, and methods of use

  • US 10,183,884 B2
  • Filed: 05/30/2013
  • Issued: 01/22/2019
  • Est. Priority Date: 05/30/2013
  • Status: Active Grant
First Claim
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1. A fluid-cooled submerged combustion burner comprising:

  • a burner body comprising an external conduit and a first internal conduit substantially concentric with the external conduit, the external conduit comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, the first internal conduit comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, the external conduit and first internal conduit forming a first annulus for passing a cooling fluid there between, and a second internal conduit substantially concentric with the external conduit, the second internal conduit comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, and configured to form a second annulus between the first and second internal conduits, the burner body comprising fuel and oxidant inlet ports near the second ends of the conduits;

    a burner tip body connected to the burner body at the first ends of the external and first internal conduits, the burner tip body comprising an inner wall, an outer wall, and a crown connecting the inner and outer walls, the inner wall and optionally a portion of the crown defining a fuel and oxidant mixing region and forming a fuel/oxidant mixture therein;

    the first end of the second internal conduit positioned a distance (L) measured from a line tangent to a distal tip of the crown, the line tangent being perpendicular to the longitudinal axis;

    at least a portion of the burner tip inner wall, measured from the first end of the second internal conduit, converging toward the longitudinal axis of the burner as the fuel/oxidant mixture flows therethrough and thereby create a higher pressure region near an exit of the mixing region to minimize the possibility of molten material above the burner entering the mixing region.

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