Oxy-fuel burner system designed for alternate fuel usage
AssigneeThe BOC Group, Inc.
InventorLoo T. Yap
Life of this patent
Estimating the term…
Abstract
An oxy-fuel burner system for alternately or simultaneously burning gaseous and liquid fuels. A gaseous fuel jet emanating from an oxy-fuel burner is either undershot by an oxygen lance or is sandwiched between oxidant jets produced by two subsidiary oxidant jets which are preferably formed of oxygen. An actuable second fuel nozzle is provided for producing a second fuel jet composed of the liquid fuel which is angled toward the oxidant jet at an angle of less than 20.degree.. When the liquid fuel to be used, the gaseous fuel is turned off and the liquid fuel is turned on and vice-versa or both can operate simultaneously where the oxidant supplies oxygen to both fuel streams.
Claims16
An oxy-fuel burner system for alternatively or simultaneously burning gaseous and liquid fuels, said oxy-fuel burner system comprising:
- an oxy-fuel burner including an actuable, first fuel nozzle means for producing a first fuel jet composed of a main fuel and oxidant nozzle means for producing at least one oxidant jet composed of an oxidant to support combustion of the main fuel of said first fuel jet;
- and
- actuable auxiliary, second fuel nozzle means for producing a second fuel jet composed of an auxiliary fuel to burn within said oxidant;
- said main and said auxiliary fuels respectively composed of said gaseous and liquid fuels or vice-versa;
- said oxy-fuel burner and said actuable auxiliary, second fuel nozzle means configured such that, under normal operating conditions, said first and second fuel jets each have a momentum different than that of said at least one oxidant jet to cause mixing of said main and auxiliary fuels with said oxidant.
An oxy-fuel burner system for alternatively or simultaneously burning gaseous and liquid fuels, said oxy-fuel burner system comprising:
- an oxy-fuel burner including an actuable, first fuel nozzle means for producing a first fuel jet composed of a main fuel and oxidant nozzle means for producing two subsidiary oxidant jets composed of an oxidant, sandwiching said first fuel jet when said first fuel nozzle means is actuated to produce a flow of said main fuel and merging into a combined oxidant jet when said first fuel nozzle means is actuated to at least reduce said flow of said main fuel;
- and
- actuable auxiliary, second fuel nozzle means for producing a second fuel jet composed of an auxiliary fuel to burn within said oxidant;
- said main and said auxiliary fuels respectively composed of said gaseous and liquid fuels or vice-versa;
- said oxy-fuel burner and said actuable auxiliary, second fuel nozzle means configured such that, under normal operating conditions, said first and second fuel jets each have a momentum, in case of said first fuel jet, different than that of at least one of said two subsidiary oxidant jets and, in case of said second fuel jet, different than that of said combined oxidant jet, to cause mixing of said main and auxiliary fuels with said oxidant.
Dependencies are inferred from the claim text.