Recovery Furnace

{
  "id": "MLC-T-ENV-023410",
  "term": "Recovery Furnace",
  "field": "Environment",
  "definition": "1. Either a straight kraft recovery furnace or a cross recovery furnace, and includes the direct-contact evaporator for a direct-contact furnace.\n\n2. Enclosed combustion device where concentrated black liquor produced by the kraft or soda pulping process is burned to recover pulping chemicals and produce steam. Includes black liquor gasification.\n\n3. Enclosed combustion device where concentrated black liquor produced by the kraft or soda pulping process is burned to recover pulping chemicals and produce steam.\n\n4. Enclosed combustion device where concentrated spent liquor is burned to recover sodium and sulfur, produce steam, and dispose of unwanted dissolved wood components in the liquor.",
  "references": [
    "40 CRF 60.281 (CFR 2013)",
    "40 CFR 63.861 (CFR 2013)",
    "40 CFR 63.861 (CFR 2018)",
    "40 CFR 63.441 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/recovery-furnace/"
}