Delayed coking valve applications
Isolation and switching around coke drums demand close attention to heat, residue and repeated operating cycles.
The application
Delayed coking exposes valves to changing combinations of hot hydrocarbons, vapour and coke. Deposits around seats and stems can obstruct movement and compromise isolation. The operating sequence is as important as the steady-state conditions.
What makes the duty demanding
- Coke accumulation and seat obstruction
- Temperature changes across operating cycles
- Leakage and increasing operating torque
Selection focus
Discuss deposit management, sealing geometry, purge interfaces and actuator sizing together. Confirm how the valve will be inspected and maintained between service intervals.
Technical background
Valmet — Delayed coking ↗Process background summarised from these primary references. References do not imply affiliation or qualification of a VFLV product.
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