직/편성물 염색

application of distributed control to batch/kamyr digester operation

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 282
in 1981, james river corporation converted twenty year old instrumentation on six batch and one kamyr digester to modern digital distributed control. two geographically separated control rooms were combined and located next to existing washer and bleaching control rooms to achieve centralized control of pulp mill operations. crt based regulatory controls were installed to interface directly with the process, and a supervisory host computer used to implement model based, advanced controls. motor control and safety interlocking is all solid state programmable logic (plc) - communicating with regulatory and supervisory controls on a common data highway. the conversion has been highly successful, resulting in a streamlining of pulping operations, implementation of more effective pulping control strategies and significant savings in energy, chemicals, higher yields and increased throughput. (author abstract)
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