Delayed Coking Valve Applications

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Delayed Coking is a key thermal conversion process in many refineries today. It is a cyclic process that thermally cracks vacuum residue or other residue feedstocks into gas, light products and petroleum coke.
Despite being an established process for over 50 years Delayed Coking presents several challenges. It is one of the most hostile environments in the refinery. Process temperatures can reach 1000 Degrees F, and the by product Coke is very abrasive and erosive. Fully solidified coke is harder than concrete. As a result of these environmental factors valves are cycled more frequently than in other parts of the refinery.
Valve failure can lead to the complete shut down of a refinery unit, and this down time is a large process and financial cost.

VALVES FOR DELAYED COKING

Datian valve has designed a range of valves for use in Delayed Coking operations.
These include the key switch, isolation, bypass, backpressure and overhead vapour valves. The valves are based on an original Datian valve patented (received in 1914) invention – the lift plug Model 12and Model 14
Datian valve can also provide valves for all other required functions in and around the delayed coking process from its extensive range of valves (e.g. for drain, warm or quench functionality the Datian valve Model 30 valves can be used.)

LIFT PLUG VALVES ADVANTAGES

The simple and rugged design delivers many benefits:

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