Improve your coking process
- M.W. Kellogg Co., Houston, TX (United States)
To maximize resid conversion, refiners can maximize liquid yield and reduce production of coke by operating coke drums at lower pressures and minimizing unit throughput ratio. Typically, incremental liquid gained at lower pressures is worth more than the coke and can be further upgraded to lighter products. In addition, the driving force to minimize coke make has been accelerated by declining crude quality. As vacuum resid feedstocks become heavier, contaminants in coke (such as sulfur and metals) increase, making the coke less marketable. A reduction in coke yield can be valuable for an existing coker that is capacity limited by coke make. Several key variables affect delayed coker yields and economics. These include resid feedstock quality, coking temperature, recycle rate and coke drum pressure. These are discussed, as is low-pressure coker design features, economics, and pressure profile considerations.
- OSTI ID:
- 5109563
- Journal Information:
- Hydrocarbon Processing; (United States), Vol. 73:2; ISSN 0018-8190
- Country of Publication:
- United States
- Language:
- English
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