Low-cost steam consumption control system for batch pulp cooking

✍ Scribed by J. Petrovčič; N. Hvala; A. Bitenc; S. Strmčnik

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 710 KB
• Volume: 3
• Category: Article
• ISSN: 0967-0661
• DOI: 10.1016/0967-0661(95)00007-h

✦ Synopsis

In batch pulp cooking the heating steam is used only in some phases of the technological procedure. This causes large variations in steam flow-rate and imposes high dynamic load at the steam generation plant. In the paper, a system for smooth steam consumption control is preseraed. It is based on three multiloop microprocessor-based controllers. The designed control structure is simple enough to be implemented as a stand-alone small-sized control systent Also, it provides a low-cost solution by eliminating the need to measm~ the steam flow-rate on each digester. ARer the in~.allation a reduction of 70% in steam flow-rate variance was measured.