Abstract:
A (MRFC) solid fuel nozzle tip (12) that is particularly suited to being cooperatively associated with a pulverized solid fuel nozzle (34) of a firing system of the type employed in a pulverized solid fuel-fired furnace (10). The MRFC solid fuel nozzle tip (12) includes fuel air shroud means (46), primary air shroud means (48) located within the fuel air shroud means (46), fuel air shroud support means (50) operative for supporting the primary air shroud means (48) relative to the fuel air shroud means (46), and splitter plate means (52) mounted in supported relation within the primary air shroud means (48). The MRFC solid fuel nozzle tip (12) may be comprised of ceramics including silicon nitride, siliconized silicon carbide, mullite bonded silicon carbide alumina composite, and alumina zirconia composites.
Abstract:
Die Erfindung umfasst einen Kombinationsbrenner für die Vergasung staubförmiger Brennstoffe mit einem freien Sauerstoff enthaltenden Oxidationsmittel bei Umgebungs- oder höheren Drücken, sowie Temperaturen zwischen 800-1800 o C, wobei die Zündvorrichtung des Pilotbrenners mit Flammüberwachung und der Staubbrenner als Kombinationsbrenner integriert sind und alle Betriebskanäle voneinander getrennt bis zum Brennermund geführt und die von den Kanälen geführten Medien erst am Brennermund gemischt werden. Bei Demontage des Pilotbrenners können die auf seiner Hülle befestigten Wirbelkörper (14) in der Hauptbrenneroxydationsmittel-Zuführung (17) schnell und einfach gewechselt werden und somit die Hauptbrennerflamme optimal an die Reaktionsraumkontur des Reaktors angepasst werden.
Abstract:
A wear resistant substrate including a metal substrate having a surface, a reinforcing support attached to the surface and cured reaction products of an inorganic curable composition disposed over and through the reinforcing support and bonded to the surface. Also a method of enhancing the wear resistance of a metal surface by attaching a reinforcing support to the surface; disposing an inorganic curable composition over and through the reinforcing support and into contact with the surface; and curing the composition.
Abstract:
A fuel head assembly (120) for a pulverized coal nozzle includes removeable back cover (123) that may be removed substantially horizontally to allow access to liners (141,143,145) inside of the fuel head assembly (120) for servicing. This may be used in places where there access from above the fuel head assembly (120) is restricted. The liners (141,143,145) are constructed of a wear-resistant material and include curved vanes (131,133) for more evenly distributing pulverized solid fuel particles, and for reducing erosion of the fuel head assembly (120).
Abstract:
The invention relates to a burner unit for solid powdered fuel (P), comprising a first tube (5, 5' ) for feeding the solid fuel (P) in a first feed direction and comprising a second tube (6) surrounding the first tube (5) for feeding combustion air (S). According to the invention, the burner unit is characterized in that a third tube (7) surrounding the first tube (5, 5') is provided for feeding an additional fuel (E). The invention further relates to a burner arrangement (A, A') comprising a burner unit of the type mentioned above and a method for burning powdered solid fuel and a furnace.
Abstract:
A head assembly 52, 152 for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes 54, 151, 153. The vanes 54, 151, 153 may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port 60, 160 toward the outlet port 62, 162. The curved vanes 151, 153 curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover 70, 170 that allows for easy access. The vanes are attached to a wear-resistant replaceable liner 185 thus allowing them to be easily removed and replaced. The wear-resistant liner 185 may be made from several parts 187, 189 for ease of removal and replacement.
Abstract:
A head assembly 52, 152 for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes 54, 151, 153. The vanes 54, 151, 153 may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port 60, 160 toward the outlet port 62, 162. The curved vanes 151, 153 curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover 70, 170 that allows for easy access. The vanes are attached to a wear-resistant replaceable liner 185 thus allowing them to be easily removed and replaced. The wear-resistant liner 185 may be made from several parts 187, 189 for ease of removal and replacement.
Abstract:
A burner tip, and method of manufacture, has a support layer with an external surface and an internal surface defining at least one opening therethrough defining a passage therethrough to deliver fuel and combustion gasses, and a thermal protective layer disposed on at least one surface of the burner tip support layer. The thermal protective layer 22 has from about 5% to about 40% of an inorganic adhesive, from about 45% to about 92% of a filler, and from about 1% to about 20% of one or more emissivity agents.
Abstract:
Submerged combustion burners having a burner body (42) and a burner tip body (50) connected thereto. The burner body has an external conduit (44) and a first internal conduit (46) substantially concentric therewith. The external conduit and first internal conduit form an annulus (1) for passing a cooling fluid there between. A second internal conduit (48) substantially concentric with the external conduit forms a second annulus between the first and second internal conduits. A burner tip body is connected to the burner body at ends of the external and first internal conduits. The burner tip body includes a generally central flow passage for a combustible mixture, the flow passage defined by an inner wall of the burner tip body. The burner tip body further has an outer wall (70) and a crown (54) connecting the inner and outer walls. The crown includes at least one physical convolution sufficient to increase surface area and fatigue resistance of the crown.
Abstract:
A system includes a gasification feed injector (16). The gasification feed injector (16) includes a tip portion (82) disposed at a fluid exit region of the gasification feed injector (16), and a tip cap (84) coupled to the tip portion (82) of the gasification feed injector (16) and configured to serve as a thermal barrier for the tip portion (82) during gasification reactions.