Petroleum Products Greenness Degree Evaluation Using a Fuzzy Hierarchy Inference System

Refineries, including the conversion industries, use oil and gas as row materials and their production processes could be so harmful to the environment if they could not manage the products detrimental effects. Nowadays these companies are working hard to minimize the environmental damages caused by their products, production processes, supply chain, distribution methods and etc. The first step in this way, is having access to the proper method to assess the products environmental impacts. In this paper a new method is presented to evaluate the refinery products degree of greenness. The developed model consists of influencing parameters on greenness degree, which are classified in a hierarchical structure. Due to the difficulties in defining an explicit function, fuzzy controllers are implemented to infer degree of greenness based on influencing parameters values. Effectiveness of the presented model is evaluated by assessing the greenness degree of Bandar Abbas refinery products and the results reflect good performance of the developed model.