Shell Oil Comapny

Johannes Hermanus Disselhorst

Hendrik Martinus Wentinck

Robert Schouwenaar

Chengming Gao

Frits Eulderink

Johannes Cornelis De Jong

A process for the manufacture of synthesis gas by reacting oxygen-containing gas, applied as oxidizer and gaseous hydrocarbon-containing fuel in a reaction zone of a non-catalytic gas generator comprising the steps of injecting the said fuel and the said oxidizer into the reaction zone through a multi-orifice (co-annular) burner comprising arrangement of n separate passages or channels coaxial with the longitudinal axis of said burner, wherein n is an integer .gtoreq.2 (2, 3, 4, 5 . . . ) wherein the (n-1).sup.th passage is the inner passage with respect to the n.sup.th passage, measured from the longitudinal axis of the said burner, and wherein gaseous hydrocarbon-containing fuel and, optionally, a moderator is passed through one or more of the passages, but at least through the n.sup.th (outer) passage whereby at least one passage remains; oxidizer and, optionally, a moderator, is passed through one or more of the remaining passages, but at least through the (n-1).sup.th passage. In any two adjacent passages in which oxidizer is passed through the one passage, and gaseous hydrocarbon-containing fuel is passed through the other passage, the said oxidizer has a higher velocity than said hydrocarbon-containing fuel.

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Amsterdam, Netherlands

Johannes Hermanus Disselhorst