Patent ID: 9032623
Filing Date: 2015-05-19
Classification: C01B,C10J,F23D,Y10T

Abstract:
1. A method for manufacturing a front face for protecting a discharge end of a burner with two or more coaxial channels, the front face comprising a central aperture corresponding to the discharge end of the burner, a front side wall and a backside wall spaced by one or more concentric baffles defining a coolant flow path with a first end provided with a coolant inlet and a second end having a coolant discharge outlet wherein the front side wall and the one or more concentric baffles are made of a single piece of metal and wherein the backside wall is welded on free top ends of the one or more concentric baffles, and wherein the burner further comprises a circular connection block, wherein the burner comprises a cylindrical central channel defined by a cylindrical inner wall disposed along a longitudinal axis and having a discharge outlet for supplying a fuel gas to a combustion zone, wherein concentrically arranged around the inner wall is a cylindrical outer wall, the inner and outer wall defining an annular coaxial channel for supplying an oxygen containing gas, the inner and outer wall having inner and outer channel wall parts, wherein the inner channel wall parts are defined by inner wall parts of double walled upstream parts and inner wall parts of single-walled downstream parts; and the outer channel wall parts are defined by outer wall parts of double walled upstream parts and outer wall parts of single-walled downstream parts wherein the inner and outer channel wall parts are welded to the circular connection block, and wherein the double walled upstream parts are arranged on a upstream side of the circular connection block and the single-walled downstream parts are arranged on a downstream side of the circular connection block.