Through-port oxy-fuel burner

摘要

A fluid-cooled through-port oxy-fuel burner for converting an air-fuel regenerator port from air-fuel combustion to oxy-fuel combustion and an associated furnace and method. The oxy-fuel burner is suitable for installing through a regenerator port neck. The burner has an elbow-like bend to accommodate the geometry of the regenerator port neck. The burner has a cooling fluid jacket, a fuel conduit, a first oxidant conduit, and optionally an oxidant staging conduit.

主权项

1. A burner comprising:
a first cooling fluid jacket with an outer equivalent diameter, D; a first oxidant conduit disposed in fixed spaced relation to and generally concentrically within the first cooling fluid jacket, the first oxidant conduit having:
an inlet;a first portion downstream of the inlet of the first oxidant conduit;a bend portion downstream of the first portion of the first oxidant conduit, the bend portion of the first oxidant conduit having a bend angle, a, of 45° to 120°; anda second portion downstream of the bend portion of the first oxidant conduit, the second portion of the first oxidant conduit terminating in an outlet end and having a flow axis and a length, L, measured from the intersection of the centerline of the first portion and the centerline of the second portion of the first conduit; and a fuel conduit having:
an inlet;a first portion downstream of the inlet of the fuel conduit, wherein the first portion of the fuel conduit is disposed in fixed spaced relation to and generally concentrically within the first portion of the first oxidant conduit;a bend portion wherein the bend portion of the fuel conduit is disposed in fixed spaced relation to and generally concentrically within the bend portion of the first oxidant conduit; anda second portion terminating in an outlet end and having a flow axis wherein the second portion of the fuel conduit is disposed in fixed spaced relation to and generally concentrically within the second portion of the first oxidant conduit thereby defining an oxidant passage between the second portion of the fuel conduit and the second portion of the first oxidant conduit; wherein the oxidant passage has an inlet section, a transition section downstream of the inlet section, and an outlet section downstream of the transition section, wherein the inlet section has a cross-sectional area, Ai, the outlet section has a cross-sectional area, Ao, and wherein0.8≤LD≤7⁢⁢and⁢⁢1.3≤AiAo≤5.