Patent ID: 7143610

Claim:
A burner for burning a pulverized fuel for use in a glass melting furnace, which comprises: a main body including: an outer pipe; an intermediate pipe; and an inner pipe; said pipes being concentrically arranged one with the other, said outer pipe and said intermediate pipe forming a first pipe chamber; said outer pipe including an inlet pipe and an outlet pipe for introducing and for circulating a cooling fluid within said first pipe chamber for the cooling of the burner; said intermediate pipe including a first inlet for introducing a first flow of air or gas in a second pipe chamber, said second pipe chamber being defined between said inner pipe and said intermediate pipe; said inner pipe including a second inlet for introducing a flow of a pulverized fuel-air mixture through said inner pipe; flow distribution means having their entrance end connected in alignment with a lower end of said main body, said flow distribution means having a curvature to uniformly change the flow trajectory of said pulverized fuel-air mixture and said first flow of air or gas, said distribution means including: an outer cylindrical body; an intermediate cylindrical body; an inner cylindrical body, with said outer cylindrical body and said intermediate cylindrical body defining a first connecting chamber for circulating the cooling fluid of said main body for the cooling of the flow distribution means, said inner cylindrical body and said intermediate cylindrical body defining a second connecting chamber for receiving and for changing the flow trajectory of the first flow of air or gas of said second pipe chamber of said main body; and a main fluid chamber for receiving and for conveying the mixture of pulverized fuel-air out to at least a discharge end of said flow distribution means to be mixed with the first flow of air or gas in a combustion zone of the glass melting furnace; and a discharge nozzle connected by each discharge end, said discharge nozzle including: ahead; a cylindrical member coupled in the rear part of said head, said cylindrical member having: a central orifice; and at least one plurality of peripheral orifices formed in the periphery of said cylindrical member, said at least one plurality of peripheral orifices being formed transversely around the periphery of the cylindrical member to provide communication between the second connecting chamber and the central orifice of said discharge nozzle.