| 摘要 |
A furnace construction for cracking of saturated hydrocarbon feed stocks to olefinic product mixtures, wherein the reaction lines of such furnace are fabricated of a ceramic refractory feed inlet pipe (10) coaxially located with a ceramic refractory tube (20) to define an annular space (30) therebetween which in part is located without and within the radiant heating firebox volume (40, 42) of such furnace, this to provide for a zone wherein hot cracked olefin product gas is quenched in temperature in such annular space (30) outside of such firebox (40) and a cracking zone within the firebox within which hydrocarbon feed is cracked to an olefin containing product gas composition.
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