A new design method for energy saving and consumption reducing of process industry based on extension theory

Enrrgy saving and consumption reducing in process industry have recently become an urgent issue with common concern. Under the certainty of production device and technical condition, a reasonable and effective design scheme for operation conditions becomes the key part in reducing the consumption of energy and material. In actual production process. the operating variables are massive and the relation among them is complex, so that traditional design methods based on practice experience or case-based rrasoning (CBR) technology have not met the demand. In the paper. a new intelligent design method based on extension theory is proposed, in which matter-element model is used to the deep design represrntation. rhombus thinking method is applied to the rcasoning and analyzing in the design process including design transformation and design evaluation. Through the actual application in purified terephthalic acid (PTA) solvent system of a chemical plant. cases studies and comparison show that the proposcd method uniformly presents the matter, formally describes the human thinking, and successfully provides the design scheme for operating conditions. which solves the contradiction between design goal and design conditions, gives the decision-making support for operation regulation, brings economic profit for enterprise, thus exploits a new and efficient way to the scheme design for energy saving and consumption reducing in process industry.