BASIC LEVEL II DECISIONS Choice of reaction chemistry Choice of raw material feedstocks Determination of need for vapor recycle Evaluation of economic potential for process
ESIGN METHODOLOGY III: RECYCLE STRUCTURE OF THE PROCESS goAL-- Determine alternate recycle structures for the process based on reactor operating requirements
DESIGN METHODOLOGY goaL-- Produce design for chemical plant that: Is economically acceptable and Is operable,ie., eIs safe → Is controllable Is reliable,and Is environmentally acceptable
ENGINEERING ECONOMICS ESTIMATING THE PROFITABILITY OF A CHEMICAL PLANT Estimating Investment Estimating Cost of Production Profitability Evaluation Return on Investment (ROD) Payout time(Tpay) DCF Rate of Return(DCFROR) Transfer Price