초록 ▼

A burner system and combustion method for high temperature applications employing a high velocity central fuel stream and a low velocity annular coaxial oxidant stream to carry out stable steady combustion in an expanding combusting stream within a cavity stably attached to the fuel nozzle so as to

A burner system and combustion method for high temperature applications employing a high velocity central fuel stream and a low velocity annular coaxial oxidant stream to carry out stable steady combustion in an expanding combusting stream within a cavity stably attached to the fuel nozzle so as to prevent combustion zone furnace gases from entering the cavity.

대표청구항 ▼

A fuel jet burner system comprising: (A) a substantially cylindrical cavity within a combustion zone wall having an opening with a diameter D communicating with the combustion zone; (B) a central conduit having a nozzle for injecting a high velocity fuel stream at a velocity not less than 200 feet p

A fuel jet burner system comprising: (A) a substantially cylindrical cavity within a combustion zone wall having an opening with a diameter D communicating with the combustion zone; (B) a central conduit having a nozzle for injecting a high velocity fuel stream at a velocity not less than 200 feet per second into the cavity toward the opening said central conduit and nozzle communicating with a source of fuel and having a tip positioned at a recess from the opening, said recess having a length L such that L/D is at least 1.0 but not more than 4.0; and (C) an annular injector for providing low velocity oxidant at a velocity not more than 100 feet per second into the cavity coaxially with the central conduit and nozzle, said annular injector communicating with a source of oxidant having an oxygen concentration of at least 30 percent, said cylindrical cavity, central conduit and annular injector establishing a stable flame attached to the nozzle.