Retractable Center Feed Injection Device

A coke drum center feed system comprising:

• a coke drum having a sidewall with a first opening and a second opening opposite and aligned with the first opening;
• a feed inlet coupled to the second opening and configured to feed residual oil into the coke drum via the second opening;
• and
• a retractable center feed injection device comprising:
• a housing coupled to the sidewall in alignment with the first opening;
• an injection nozzle contained within the housing, the injection nozzle having a first end and a second end, the injection nozzle configured to slide between a retracted position in which the first end does not extend through the first opening into an interior of the coke drum and an extended position in which the injection nozzle extends across the interior of the coke drum to couple the first end with the feed inlet, the injection nozzle including a chamber positioned towards the first end, the chamber including an inlet opening that aligns with the feed inlet and one or more outlet openings that are oriented upwardly such that the residual oil fed through the feed inlet when the injection nozzle is in the extended position flows into the chamber via the inlet opening and out of the chamber via the one or more outlet openings;
• and
• an actuator for sliding the injection nozzle between the retracted position and the extended position.

A retractable center feed injection device comprising:

• a housing configured to couple to a sidewall of a coke drum in alignment with a first opening in the sidewall;
• an injection nozzle contained within the housing;
• an actuator coupled to the injection nozzle and configured to slide the injection nozzle between a retracted position and an extended position;
• and
• a feed inlet configured to couple to the sidewall of the coke drum in alignment with a second opening in the sidewall that is opposite the first opening;
• wherein, when the injection nozzle is in the retracted position, a first end of the injection nozzle does not extend into an interior of the coke drum;
• and
• wherein, when the injection nozzle is in the extended position, the first end of the injection nozzle extends across the interior of the coke drum and couples with the feed inlet, the first end forming a channel through which residual oil flowed through the feed inlet can be injected into the interior of the coke drum.