| 摘要 |
Submerged combustion burners having a burner body and a burner tip connected thereto. The burner body has an external conduit (10) and first (12) and second internal (14) conduits substantially concentric therewith, forming first and second annuli for passing a cooling fluid therethrough. A burner tip body is connected to the burner body at ends of the external and second internal conduits. The burner tip includes a generally central flow passage for a combustible mixture, the flow passage defined by an inner wall (28) of the burner tip. The burner tip further has an outer wall (30) and a crown (32) connecting the inner and outer walls. The inner and outer walls, and the crown are comprised of same or different materials having greater corrosion and/or fatigue resistance than at least the external burner conduit. |
