The given flow showes that how ethanol fuel is produced with several steps starting from scartch(corn).Overall the process takes upto 3 till storing and transporting.
Firstly, the whole process starts from corn which is considered as raw material and stored it, then next stage is milling and right after it water is added in it and then cooking take place for exact 4 hours. Afterwards, fermenting process take place which lasts for 2 days, which is also hightest time taking process followed by separating process comes in which material is in solid form and some liquid is added in it then the final stage comes in manufacturing process of ethanol which is purifying which also requied some time, which is 5 hours. Here manufacturing process ends then storing and transporting take place.
In conclusion, the whole process takes place in 7 different steps while addition of water and liquid is not considered as steps and fermenting is the highest time taking process while cooking is least time taking step.
