Researching of Possible Methods of Crude Methanol Cleaning

✍ Scribed by M.B. Glebov; E.A. Moshnyakov

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: German
• Weight: 41 KB
• Volume: 73
• Category: Article
• ISSN: 0009-286X
• DOI: 10.1002/1522-2640(200106)73:6<645::aid-cite6453333>3.0.co;2-8

✦ Synopsis

Cyclic scheduling and operational optimization of continuous multiproduct plants are integrated in just one MINLP problem. First, model TSPFLOW is proposed for the problem of pure scheduling. TSPFLOW yields a notable CPU time reduction (around 90 %) as well as the solution of instances much larger than the ones formerly reported (five times sized problems). Secondly, after achieving the size reduction in the combinatorial aspect of the original model, processing rates and yields are introduced as additional optimization variables in order to state the simultaneous problem of scheduling with operational optimization. Case studies and a sensitivity analysis of the plant costs are held. As expected, results show that the simultaneous scheduling and optimization approach results in a more profitable plant operation.