| 摘要 |
A burner (10) for the partial oxidation of a hydrocarbon feedstock, comprising a combustion chamber and a premixing chamber (E), and a plurality of annular passages for feeding fuel and oxidizer to the combustion chamber, said plurality of annular passages comprising at least a first annular passage for the fuel, and at least a second coaxial annular passage for the oxidizer, producing a layered flow into the premixing chamber (E). In a preferred embodiment the burner has an annular passage (1) for fuel or oxidizer surrounded by two other passages (2 and 3) for the oxidizer or fuel, respectively; in a further embodiment a start-up burner (20) is integrated with the main process burner, said start-up burner having a combustion chamber (L), a main hub (G) and a swirler (H), and providing a smooth transition from the start-up to the process phase that does not require any mechanical intervention of the pressure vessel/burner assembly and can be performed through automatic control systems.
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