Draw a block flow diagram for a petroleum refinery that includes three different separation processes, five different conversion processes along with one or more finishing processes, and one supporting process to produce altogether nine commercial fuels and materials from a sour crude oil. clearly label all the feedstocks processes, and products on your diagram including the type of process (separation, conversion, finishing, and support) and the intermediate products. make sure that all processes are correctly connected. write down the principal objectives of this refinery. draw a block flow diagram for a petroleum refinery to maximize the diesel fuel yield from a paraffinic crude oil. in your flow diagram, include only the processes that are absolutely necessary for maximum diesel yield and make sure that the whole crude is converted completely to commercial (sellable) products in this refinery.