ThruPlus® delayed coking is a semi-batch thermal process for upgrading low-value, heavy hydrocarbon residues into high-value, light-hydrocarbon liquids. This is accomplished by heating the feed in the furnace to sufficiently initiate cracking reactions, then providing residence time in the coke drums for these and secondary reactions to proceed. The liquids and gases produced are separated in the fractionator and used as feedstocks for downstream units for further refining into heating fuels, motor fuels and petrochemical feedstocks. The petroleum coke is typically used in anode manufacturing or as fuel.
Blowdown SystemThe closed blowdown system, an essential part of our delayed coking process, safely condenses the steam and hydrocarbon vapors during the coke drum steaming and water quench operations. Also, this system safely recovers heavy hydrocarbons and inerts released from the coke drums during upset conditions.
Coke Removal The process design provides a proven and reliable coke removal system. Normal delayed coker operation is based on 10-hour fill cycle. By employing ConocoPhillips operating practices and cutting techniques, we have reduced cycle times to as low as 10 hours in our operations.
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