Burner with removable shell for use in a melter
A burner is configured for attachment along a wall of a furnace of a melter and includes a fuel conduit and a coolant shell. The fuel conduit extends from a supply end to a combustion end, and the coolant shell surrounds the combustion end of the fuel conduit. The burner is configured to receive a cooling fluid and circulate the cooling fluid within the cooling shell before the cooling fluid exits the burner. The coolant shell is removable and replaceable with another identical coolant shell.
1 . A burner configured for attachment along a wall of a melting chamber of a melter, the burner comprising:
a rearward section comprising
a mounting flange configured for mounting the burner to the wall of the melting chamber,
a gas conduit, and
an axially extending partition; and
a forward section sealingly and removably coupled to the mounting flange of the rearward section and comprising a coolant shell, the coolant shell comprising
an outer wall spaced radially outwardly from the partition of the rearward section to establish a radially outer portion of a coolant passage between the partition and the outer wall, and
an inner wall spaced radially inwardly from the partition of the rearward section to establish a radially inner portion of the coolant passage between the partition and the inner wall.
2 . The burner of claim 1 , wherein a cooling fluid enters the coolant shell along the radially outer portion of the coolant passage and exits the coolant shell along the radially inner portion of the coolant passage.
3 . The burner of claim 1 , wherein the gas conduit is a fuel conduit, the burner further comprising an oxidant passage having a discharge end at a combustion end of the fuel conduit, wherein at least a portion of the oxidant passage is removed when the coolant shell is removed from the burner.
4 . The burner of claim 1 , the forward section of the burner further comprising an attachment flange removably coupled to the mounting flange of the rearward section, wherein the outer wall of the coolant shell extends from the attachment flange.
5 . The burner of claim 1 , further comprising:
an attachment flange extending radially from the coolant shell; and
an axially compressed seal at an interface between the rearward section and the attachment flange.
6 . The burner of claim 5 , the rearward section having a coolant passage, wherein the seal provides fluid-tight conveyance of cooling fluid between the coolant passage of the rearward section and the coolant passage established within the coolant shell.
7 . The burner of claim 1 , further comprising:
a radially compressed seal at an interface between the rearward section and the coolant shell,
wherein the gas conduit is a fuel conduit and the seal provides fluid-tight conveyance of an oxidant between an oxidant passage of the rearward section and an oxidant passage extending along the inner wall of the coolant shell to a combustion end of the fuel conduit.
8 . The burner of claim 7 , further comprising an attachment flange extending radially from the coolant shell and forming an interface between the rearward section and the attachment flange, wherein the attachment flange is located axially between the radially compressed seal and a combustion end of the gas conduit.
9 . The burner of claim 7 , further comprising an attachment flange extending radially from the coolant shell and forming an interface between the rearward section and the attachment flange, wherein the radially compressed seal is located axially between the attachment flange and a combustion end of the gas conduit.
10 . The burner of claim 1 , wherein a combustion end of the gas conduit is surrounded by each of the inner and outer walls.
11 . The burner of claim 1 , wherein the inner wall and the outer wall are made together as a single piece.
12 . The burner of claim 1 , wherein the inner wall is sealingly and removably coupled with the gas conduit of the rearward section.
13 . The burner of claim 1 , wherein the outer wall extends in a first direction with respect to the mounting flange and the inner wall is removably coupled with the rearward section at a location spaced away from the mounting flange in an opposite second direction.
14 . The burner of claim 1 , wherein at least a portion of an exterior surface of the coolant shell comprises a thermal barrier coating.
15 . A melter comprising a submerged combustion furnace and at least one burner according to claim 1 , each burner being attached to the furnace along a bottom wall and extending at least partially through an opening formed through the bottom wall.
16 . The melter of claim 15 configured to receive glass feedstock materials and produce molten glass.
17 . A burner configured for attachment along a wall of a furnace of a melter, the burner comprising:
a rearward section configured for mounting the burner to the furnace and comprising a fuel conduit extending from a supply end to a combustion end;
a forward section comprising a burner tip, the forward section being removably attached to the rearward section and surrounding the combustion end of the fuel conduit; and
an elastomeric seal at an interface between the rearward section and the forward section, the elastomeric seal being axially spaced from the burner tip and releasable from at least one of the forward section or the rearward section when the forward section is removed from the rearward section,
the forward section further comprising a radially inner wall and a radially outer wall, wherein the interface between the rearward section and the forward section is located along the radially inner wall, and wherein the elastomeric seal is radially compressed at the interface.
18 . The burner of claim 17 , the forward section comprising a coolant shell, wherein the burner is configured to receive a cooling fluid and circulate the cooling fluid within the coolant shell.
19 . The burner of claim 18 , the rearward section comprising a partition housed in the coolant shell, wherein the cooling fluid enters the coolant shell along one side of the partition and exits the coolant shell along an opposite side of the partition, and wherein the partition and the coolant shell are separated from each other when the forward section is removed from the rearward section.
20 . The burner of claim 17 , the rearward section comprising a mounting flange configured for mounting the burner to the furnace, wherein the interface between the rearward section and the forward section is located along the mounting flange, and wherein an additional elastomeric seal is axially compressed at the interface.
21 . The burner of claim 17 , wherein the radially inner wall and the radially outer wall are made together as a single piece.
22 . A submerged combustion melting burner, comprising:
a rearward section including
a mounting flange,
a coolant shell partition extending in a forward direction with respect to the mounting flange, and
a gas conduit; and
a forward section removably and replaceably coupled to the rearward section, the forward section including
an attachment flange sealingly and removably coupled to the mounting flange of the rearward section, and
a coolant shell coupled to the attachment flange, the coolant shell including
an outer wall extending in the forward direction from the attachment flange and spaced radially outwardly of the coolant shell partition of the rearward section to establish a coolant inlet path between the coolant shell partition and the outer wall,
an end wall terminating the outer wall at an end of the burner and spaced axially from the coolant shell partition to establish a coolant transition path between the cooling shell partition and the end wall, and
an inner wall extending from the end wall in a rearward direction and sealingly and removably coupled to the gas conduit of the rearward section, the inner wall being spaced radially inwardly of the cooling shell partition of the rearward section to establish a coolant outlet path between the cooling shell partition and the inner wall.
23 . The burner of claim 22 , wherein the outer wall, end wall, and inner wall are of unitary construction.
24 . The burner of claim 17 , wherein the rearward section comprises a mounting flange configured for mounting the burner to the furnace and the forward section extends from the burner tip to the mounting flange.