Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed
Patent
1985-11-22
1987-01-06
Metz, Andrew H.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With preliminary treatment of feed
208 48R, 208106, 208177, 208298, 208310R, C10G 2506, C10G 5504
Patent
active
046345167
ABSTRACT:
A process is disclosed for deactivating or removing aromatic compounds from a kerosene or gas oil, which aromatics are coke precursors in a steam cracking process (conducted in the absence of a catalyst) to convert the hydrocarbons contained in the kerosene or gas oil to hydrocarbons of smaller molecules. The excising occurs by contacting the kerosene or gas oil, before admission to the steam cracking zone, with particulate size activated carbon of 4 mesh to 50 mesh size and physically removing the activated carbon (with at least a portion of the aromatic content of the coke derived from the kerosene or gas oil absorbed thereon) from the slurry before passage of the kerosene or gas oil to the steam cracking furnace. The separation of the activated carbon from the kerosene or gas oil is made in a physical separation zone whereby a wall having aperatures therein, similar to a filter or screen, is sized to permit passage of the kerosene or gas oil through the aperatures with a decreased amount of aromatics and yet prohibit the passage of the fine, particulate activated carbon having polynuclear aromatics absorbed through the aperatures thereon.
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Haskell Weston W.
Ngan Danny Y.
McFarlane Anthony
Metz Andrew H.
Muller Kimbley L.
Shell Oil Company
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