decoking


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decoking

[dē′kōk·iŋ]
(chemical engineering)
Removal of petroleum coke from equipment.
References in periodicals archive ?
The on-stream time for coker heaters can be improved by using on-line decoking (Sloan et al.
Table 6 shows the time required for the different steps involved in 12 h and 24 h decoking operations.
After the completion of the decoking operation, the deheading device is then replaced and the bottom and top heads are locked in the drum.
Hydraulic decoking has played a major role in the success story of the delayed coking process (Welsh, 1950; Rose, 1971).
With regard to the advancement in hydraulic decoking, Rose (1971) reported that special interlocked controls and bypass valves have been devised to facilitate operation and protect personnel, piping and pump.
1992) reported that in order to improve the safety, working environment and operability/maintainability of delayed coking units, the reliability of the system controls and control switches is of utmost importance as it is more closely related to hydraulic decoking.
1970) reported that the direct railcar method (Figure 18), though the cheapest, has limitations such as, more time is required to decoke into cars than any of the other conventional methods of decoking and more care is required when decoking into cars is to be carried out to avoid spillage.
The water drains to the periphery of the pad into a settling maze where coke fines settle out before the clear water is recycled to the decoking water surge tank for re-use.
The decoking water drains out through ports at one or both ends of the pit, depending on the size of the facility.
The acquisition also enhances Flowserve's ability to provide aftermarket support for the installed base of hydraulic decoking pumping systems, a key company product in Japan.