Batch Operation

{
  "id": "MLC-T-ENV-002858",
  "term": "Batch Operation",
  "field": "Environment",
  "definition": "1. Noncontinuous operation involving intermittent or discontinuous feed into equipment, and, in general, involves the emptying of the equipment after the operation ceases and prior to beginning a new operation. Addition of raw material and withdrawal of product do not occur simultaneously in a batch operation. [40 CFR 63.2550 (CFR 2013)][40 CFR 63.12005 (CFR 2013)]\n\n2. Noncontinuous operation involving intermittent or discontinuous feed into PAI or integral intermediate manufacturing equipment, and, in general, involves the emptying of the equipment after the batch operation ceases and prior to beginning a new operation. Addition of raw material and withdrawal of product do not occur simultaneously in a batch operation. A batch process consists of a series of batch operations.\n\n3. Any process that operates in a manner where the addition of raw material and withdrawal of product do not occur simultaneously. Typically, raw material is added to a process, operational steps occur, and a product is removed from the process. More raw material is then added to the process and the cycle repeats.\n\n4. Any noncontinuous reactor process that is not characterized by steady-state conditions and in which reactants are not added and products are not removed simultaneously.\n\n5. Noncontinuous operation in which a discrete quantity or batch of feed is charged into a unit operation within a chemical manufacturing process unit and processed at one time. Batch operation includes noncontinuous operations in which the equipment is fed intermittently or discontinuously. Addition of raw material and withdrawal of product do not occur simultaneously in a batch operation. After each batch operation, the equipment is generally emptied before a fresh batch is started.",
  "references": [
    "40 CFR 63.1251 (CFR 2013)",
    "40 CFR 63.1361 (CFR 2013)",
    "40 CFR 63.2872 (CFR 2013)",
    "40 CFR 60.701 (CFR 2013)",
    "40 CFR 63.101 (CFR 2024)"
  ],
  "url": "https://mlchart.com/terminology/environment/batch-operation/"
}