Abstract: Most studies on investment evaluation mainly focus on enterprise economic benefits only,
without process operability and sustainability considered. In this paper, we suggest that
investment evaluation in process industries should be executed under three strategic
objectives--enterprise benefits, social benefits and customer benefits. A systematic
investment evaluation and decision-making method with a four-step procedure based on the
analytic hierarchyprocess (AHP) is proposed to evaluate various qualitative and
quantitative elements with various criteria. At the first step, the decision hierarchy is
constructed under the three strategic objectives. Second, pair-wise comparison is utilized
to evaluate the weights of elements and criteria. Third, qualitative elements are
quantified by pair-wise comparison and quantitative elements are re-scaled by a uniform
criterion. At the last, the best choice is made through synthesizing values upward in the
hierarchy. An investment decision support system (DSS) is developed based on Microsoft
Excel, and applied to a retrofit investment of united fluid catalytic cracking(FCC) and
liquefied gas separation process in a refinery plant.

Key words: investment evaluation, decision support system, process industries, analytic hierarchy process

摘要： Most studies on investment evaluation mainly focus on enterprise economic benefits only,
without process operability and sustainability considered. In this paper, we suggest that
investment evaluation in process industries should be executed under three strategic
objectives--enterprise benefits, social benefits and customer benefits. A systematic
investment evaluation and decision-making method with a four-step procedure based on the
analytic hierarchyprocess (AHP) is proposed to evaluate various qualitative and
quantitative elements with various criteria. At the first step, the decision hierarchy is
constructed under the three strategic objectives. Second, pair-wise comparison is utilized
to evaluate the weights of elements and criteria. Third, qualitative elements are
quantified by pair-wise comparison and quantitative elements are re-scaled by a uniform
criterion. At the last, the best choice is made through synthesizing values upward in the
hierarchy. An investment decision support system (DSS) is developed based on Microsoft
Excel, and applied to a retrofit investment of united fluid catalytic cracking(FCC) and
liquefied gas separation process in a refinery plant.

关键词: 过程工业;投资决策支持系统;投资评价;企业;经济效益