High temperature material introduction apparatus

Claim 2

Lance apparatus for introducing a plurality of separate materials into a high temperature environment which comprises: a closed elongated outer shell having a forward end adapted to extend into said high temperature environment and a rearward end; a plurality of separate conduits secured within the outer shell and positioned so that a coolant passageway is formed between the outer shell and the plurality of conduits, the forward ends of each of the conduits extending through the forward end of the outer shell thereby forming a plurality of material discharge nozzles in the outer shell and the rearward ends of the conduits extending through the rearward end of the outer shell forming a plurality of material inlet connections at the rearward end thereof; a coolant inlet connection communicating with said coolant passageway formed in the outer shell at the rearward end thereof; a coolant outlet connection communicating with said coolant passageway formed in the outer shell at the rearward end thereof; and means disposed within the coolant passageway for causing coolant introduced therein through said coolant inlet to circulate through the coolant passageway along the entire length of the outer shell and then exit the outer shell by way of the coolant outlet.

Claim 3

The apparatus of claim 1 wherein the means for causing coolant to circulate through the coolant passageway along the entire length of the outer shell comprises a plurality of baffles secured within the coolant passageway forming a path from the coolant inlet at the rearward end of said outer shell to the forward end thereof and then back to the coolant outlet at the rearward end thereof.

Claim 4

Lance apparatus for simultaneously introducing two or more materials into a high temperature environment which comprises: a closed elongated outer shell having a forward end for extending into the high temperature environment and a rearward end; a first conduit having a forward end and a rearward end secured within the outer shell so that a coolant passageway is formed between the first conduit and the outer shell, the forward end of the first conduit extending open-ended through the forward end of the outer shell thereby forming a first material discharge nozzle in the outer shell and the rearward end of the first conduit extending through the rearward end of the outer shell forming a first material inlet connection at the rearward end thereof; a second conduit having a forward end and a rearward end positioned within the first conduit, the forward end of the second conduit extending through the forward end of the outer shell thereby forming a second material discharge nozzle in the outer shell and the rearward end of the second conduit extending through the first conduit and the rearward end of the outer shell forming a second material inlet connection at the rearward end of the outer shell; a coolant inlet connection communicating with said coolant passageway formed in the outer shell at the rearward end thereof; a coolant outlet connection communicating with said coolant passageway formed in the outer shell at the rearward end thereof; and means disposed within the coolant passageway for causing coolant introduced through said coolant inlet to circulate through the coolant passageway along the entire length of the outer shell and then exit by way of said coolant outlet.

Claim 5

Lance apparatus for simultaneously introducing two or more materials into a high temperature environment which comprises: a closed elongated outer shell having a forward end for extending into the high temperature environment and a rearward end; a first conduit having a forward end and a rearward end secured within the outer shell so that a coolant passageway is formed between the first conduit and the outer shell, the forward end of the first conduit extending open-ended through the forward end of the outer shell thereby forming a first material discharge nozzle in the outer shell and the rearward end of the first conduit extending through the rearward end of the outer shell forming a first material inlet connection at the rearward end thereof; a second conduit having a forward end and a rearward end positioned within the first conduit, the forward end of the second conduit extending through the forward end of the outer shell thereby forming a second material discharge nozzle in the outer shell and the rearward end of the second conduit extending through the first conduit and the rearward end of the outer shell forming a second material inlet connection at the rearward end of the outer shell; a coolant inlet connection communicating with said coolant passageway formed in the outer shell at the rearward end thereof; a coolant outlet connection communicating with said coolant passageway formed in the outer shell at the rearward end thereof; and means disposed within the coolant passageway for causing coolant introduced through said coolant inlet to circulate through the coolant passageway along the entire length of the outer shell and then exit by way of said coolant outlet.

Claim 6

The apparatus of claim 3 wherein the outer shell, the first conduit and the second conduit are positioned coaxially.

Claim 7

The apparatus of claim 4 wherein the means for causing coolant to circulate through the coolant passageway along the entire length of the outer shell comprises a pair of divider baffles secured within said passageway in a plane intersecting the common axis of the first conduit and the outer shell and extending from the rearward end of the outer shell between the coolant inlet and the coolant outlet formed therein to a point adjacent the forward end of the outer shell.

Claim 8

The apparatus of claim 5 which is further characterized to include a plurality of baffles disposed within said coolant passageway whereby a tortuous path is formed therein.