Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1975-09-18
1977-08-09
Levine, Herbert
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208 46, 423445, C10G 914
Patent
active
040409465
ABSTRACT:
A petroleum coke of unusually high-crystalline texture and of high purity is produced from a low-sulfur petroleum material by a process including a preheat-treating step for removing non-crystalline substances contained in the material as pitch or coke and a coking step wherein a heavy oil derived from the preceding step is coked in a coking crystallizer in such a manner that pitch-like heavy oil downwardly flows and is progressively accumulated and coked therein while gaseous light hydrocarbons are discharged at the upper part of crystallizer whereby the coking is conducted with a high growth and high orientation of coke crystals formed.
REFERENCES:
patent: 2366057 (1944-12-01), Russell
patent: 2775549 (1956-12-01), Shea
patent: 2921017 (1960-01-01), Johnson et al.
patent: 3472761 (1969-10-01), Cameron
patent: 3736248 (1973-05-01), Hussong
patent: 3769200 (1973-10-01), Folkins
Hase Yoshihiko
Hayashi Kiyoshige
Kobayashi Nobuyuki
Nakaniwa Mikio
Yamamoto Minoru
Levine Herbert
Maruzen Petrochemical Co. Ltd.
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