| 摘要 |
<p>1,260,905. Carbon black. PHILLIPS PETROLEUM CO. 22 May, 1969 [23 May, 1968], No. 26230/69. Heading C1A. In a carbon black furnace comprising three coaxial sections 2, 4 and 5 of which section 4 is of greater cross-sectional area than sections 2 and 5, at least one intermediate section 3 is provided having a cross-sectional area intermediate between sections 2 and 4, and each intermediate section being of successively increasing cross-sectional area. The hydrocarbon feedstock is introduced through conduit 7 and the fuel gas and air are introduced through conduits: 10 and 11 into zone 2 and expanded, in at least two stages, into zone 4 through zones 3. Additionalcombustion gas is added via conduit 8. Carbon black is formed in reactor 5 and removed via conduit 6.</p> |
