Preparation of lower sulfur and higher sulfur cokes
Patent
·
OSTI ID:6915753
This patent describes a process for producing a lower sulfur coke and higher sulfur coke from a single feedstock. It comprises: catalytically hydrotreating a virgin heavy oil having an API gravity of from about {minus}5 to about 25 and an initial boiling point of from about 550{degrees}F to bout 1,000{degrees}F to reduce the sulfur content of the hydrotreated product to not more than about 0.75 weight percent, separating the hydrotreated product into a heavy fraction and a light fraction, separately subjecting each fraction to delayed coking, calcining the resulting green coke products to obtain from the coked light fraction a low sulfur calcined coke, and from the coked heavy fraction a higher sulfur calcined coke.
- Assignee:
- Conoco Inc., Ponca City, OK
- Patent Number(s):
- US 4894144; A
- Application Number:
- PPN: US 7-275295A
- OSTI ID:
- 6915753
- Country of Publication:
- United States
- Language:
- English
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