Feasibility of Reducing Waste in Old Gasoline Production Unit of Tabriz Oil Refining Company Using Material Flow Cost Accounting (MFCA)

Due to the environmental issues and problems caused by excessive waste production in the oil industry, environmental protection agencies impose some rules and restrictions on various industrial activities that require accounting, environmental assessment, and problem detecting and solving. In the present article old gasoline production unit of Tabriz Oil Refining Company has been investigated using the Material Flow Cost Accounting (MFCA). The results showed that only 73% of the unit output is positive products which comprises gasoline and hydrogen, and the rest, which equals to 27% of outputs, is negative products, which costs 1350 billion Rials per year. In order to reduce costs in this unit, the heat stored in exhaust gases in furnace chimneys was reused and it was found that this would prevent the loss of 562 million Kilojoules of energy and heat to the atmosphere per minute. Other suggested methods include the use of variable speed electric drives in unit’s electromotors, which showed that by using variable speed drives, the cost of energy consumption would decrease by 30%, which is equivalent to 763 million Rials per year.