Fluid catalytic cracking unit

{
  "id": "MLC-T-ENV-011347",
  "term": "Fluid catalytic cracking unit",
  "field": "Environment",
  "term_source": "Fluid Catalytic Cracking Unit",
  "definition": "1. Refinery process unit in which petroleum derivatives are continuously charged; hydrocarbon molecules in the presence of a catalyst suspended in a fluidized bed are fractured into smaller molecules, or react with a contact material suspended in a fluidized bed to improve feedstock quality for additional processing; and the catalyst or contact material is continuously regenerated by burning off coke and other deposits. The unit includes the riser, reactor, regenerator, air blowers, spent catalyst or contact material stripper, catalyst or contact material recovery equipment, and regenerator equipment for controlling air pollutant emissions and for heat recovery.\n\n2. Refinery process unit in which petroleum derivatives are continuously charged and hydrocarbon molecules in the presence of a catalyst suspended in a fluidized bed are fractured into smaller molecules, or react with a contact material suspended in a fluidized bed to improve feedstock quality for additional processing and the catalyst or contact material is continuously regenerated by burning off coke and other deposits. The unit includes the riser, reactor, regenerator, air blowers, spent catalyst or contact material stripper, catalyst or contact material recovery equipment, and regenerator equipment for controlling air pollutant emissions and for heat recovery. When fluid catalyst cracking unit regenerator exhaust from two separate fluid catalytic cracking units share a common exhaust treatment (e.g., CO boiler or wet scrubber), the fluid catalytic cracking unit is a single affected facility.",
  "abbreviation": "FCCU",
  "subject": "Built environments",
  "references": [
    "40 CFR 60.101 (CFR 2013)",
    "40 CFR 60.101a (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/fluid-catalytic-cracking-unit/"
}