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1

COKE DRUM

ACCUMULATOR

HHPS

STRIPPER

STRIPPERCONDENSER

STRIPPER OHACCUMULATOR

CLPS

CHPS

RECYCLE GASCOMPRESSOR

MAKEUPHYDROGEN

1. Water WashProblem: Scrub chlorides from the effluent vapor. Most installations use quills with no spray nozzles or conventional spray nozzles. Quills and conventional nozzles do not provide adequate chloride scrubbing. Most of the water ends up on the walls of the pipes and enters the REAC in an asymmetrical distribution.Best practice: To maximize scrubbing potential, wash water injection should maximize the surface area of water injected. This allows for better contact with the chlorides and for more uniform distribution of the wash water through the piping system and REAC inlets. The newest technology uses a slipstream of makeup hydrogen as a secondary fluid in a two-fluid spray nozzle. The FloMax® H nozzle has been designed specifically for this application and outperforms quills and spray nozzle in chloride scrubbing efficiency.