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Burner apparatus, submerged combustion melters including the burner, and methods of use

  • US 8,875,544 B2
  • Filed: 10/07/2011
  • Issued: 11/04/2014
  • Est. Priority Date: 10/07/2011
  • Status: Active Grant
First Claim
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1. A submerged combustion burner comprising:

  • a first conduit comprising a first end, a second end, a longitudinal bore having a longitudinal axis, and an external surface;

    a second conduit substantially concentric with the first conduit, the second conduit comprising a first end, a second end, and an internal surface;

    the first and second conduits configured to form a primary annulus between the external surface of the first conduit and the internal surface of the second conduit;

    an adjustable structure comprising a body having an upper surface forming a constant angle α

    with the longitudinal axis, a lower surface, a circumferential surface abutting a portion of the internal surface of the second conduit, the body including a circumferential lip extension extending away from the upper surface of the body and generally parallel to the longitudinal axis, and a generally cylindrical central hub concentric with the longitudinal axis, the structure adjustable axially in relation to and removably attached to the first end of the first conduit via the hub, the hub defining a central passage having an exit at the upper surface, the body comprising one or more non-central through passages extending from the lower to the upper surface, the non-central passages configured such that flow of a first fluid through the non-central passages causes the first fluid to intersect a flow of a second fluid in a mixing region above the upper surface of the body; and

    a third substantially concentric conduit comprising a first end, a second end, and an internal surface, the internal surface of the third conduit forming, with an exterior surface of the second conduit, a secondary annulus external to the primary annulus, wherein the first end of the third conduit extends beyond the first end of the second conduit, the first end of the second conduit extends beyond the first end of the first conduit, and the secondary annulus is capped by an end cap connecting the first end of the second conduit and the first end of the third conduit, wherein the end cap is half-torus shaped, the half-torus having an inner diameter equal to an inner diameter of the circumferential lip extension of the hub body, the diameters configured so that the end cap does not obstruct flow of combustion products out of the burner.

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