Introduction The construction of any chemical plant requires a deep study about its economy whether it is suitable or not, in order to proceed the process. This chapter will focus on the economy of the propane dehydrogenation process. Results performed in the previous chapters will be utilized in this chapter in order to construct an overall study of the economy of the process. Moreover, some suggestions will be proposed regarding the utility cost to be minimized and environmental damage abatement, through preformation of heat integration.
The overall study will focus on many aspects including capital cost which gives an idea about the module cost, total bare module and grassroot costs, water operation, waste treatment, operating labor, utility, raw material, and fixed capital cost. The previous values will be calculated in order to calculate the cost for the manufacture.
As part of the process, cash will be consumed and produced unstable rate and at different time intervals throughout the lifetime of the process, beginning from the plant construction and continuously remaining through operation time. The cash flow diagrams will be utilized to give a clear demonstration about the process cash flow during plant lifetime.
Heat integration will be performed in order to maximize the process heat efficiency and minimize the costs through pinch analysis. The thermodynamics fundamentals will be applied to ensure the most profitable utilization of the heat of the process. Among any other methods, pinch analysis has been considered to be the best approach to accomplish heat integration.
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