초록 ▼

An improved nozzle tip (10) for a burner on a pulverized coal-fired furnace for receiving a stream of pulverized coal and air discharging from the coal delivery pipe (50) of the burner and directing the pulverized fuel and air stream into the furnace, is comprised of a base body (20), a replaceable

An improved nozzle tip (10) for a burner on a pulverized coal-fired furnace for receiving a stream of pulverized coal and air discharging from the coal delivery pipe (50) of the burner and directing the pulverized fuel and air stream into the furnace, is comprised of a base body (20), a replaceable highly abrasion resistant insert (30), and a replaceable highly temperature resistant end cap (40) which is readily attachable by mechanical means (28, 48) to the base body with the abrasion resistant insert disposed therein. The insert defines a highly abrasion resistant flow conduit through the nozzle tip from the discharge end of the base body to the receiving end of the end cap through which the pulverized fuel and air stream passes from the burner into the furnace.

대표청구항 ▼

A nozzle tip for a burner on a pulverized fuel-fired furnace for receiving a stream of pulverized fuel and air discharging from the burner and directing said pulverized fuel and air stream into the furnace, comprising: a. a hollow, open-ended base body adapted to be mounted to the discharge end of t

A nozzle tip for a burner on a pulverized fuel-fired furnace for receiving a stream of pulverized fuel and air discharging from the burner and directing said pulverized fuel and air stream into the furnace, comprising: a. a hollow, open-ended base body adapted to be mounted to the discharge end of the burner having an outer shell and an inner shell disposed substantially coaxially in spaced relationship within the outer shell so as to define a first flow passage through the interior of the inner shell and a second flow passage through the annular space between the inner and outer shells; b. a replaceable, hollow, open-ended end cap removably mounted to said base body at the discharge end thereof and having an outer shell and an inner shell disposed substantially coaxially in spaced relationship within the outer shell so as to define a first flow passage through the interior of the inner shell and a second flow passage through the annular space between the inner and outer shells; and c. a replaceable, hollow, open-ended insert of a highly abrasion resistant material disposed intermediate of said base body and said end cap and retained in position therebetween by said base body and said end cap, said insert having an inlet end mating with an abutting against the discharge end of the inner shell of said base body and an outlet end mating with and abutting against the receiving end of the inner shell of said end cap, said insert defining a highly abrasion resistant flow conduit through the nozzle tip from the discharge end of the first flow passage of said base body to the receiving end of the first flow passage of said end cap through which the pulverized fuel and air stream passes from the burner into the furnace.