SOME ASPECTS OF THE PRACTICAL APPLICATION OF PINCH TECHNOLOGY METHODS

The theory of pinch technology is now well developed. However, the more recent methods often require complex computer programs not available to many users. This paper suggests alternative ways of applying the theory to practical situations. Current methods are briefly reviewed, and difficulties with stream data extraction, area and cost targeting and time-dependent situations (including batch processes) are highlighted. Practical short-cut solutions are proposed, based mainly on the straightforward Problem Table algorithm. Three worked examples are included: data extraction for a dryer, DELTA-T(min) optimisation in a topology trap with phase changes present, and start-up of a continuous process.