Energy consumption and environment emissions analysis of a typical corn deep processing enterprise

To reduce environmental pressure and realize sustainable development of corn deep processing industry, a corn deep processing enterprise with average scale in China was selected to study in this paper. The metabolic models for the production of the corn deep processing enterprise were established using Material Flow Analysis Method. The material and energy consumption indicators, waste and emission indicators and material balance indicators were calculated according to the formula of MFA index, and the results were shown as follows: water consumption per unit of product is 5.4 m ³/t, steam consumption per unit of product is 3.94 m ³/t, electricity consumption per unit of product is 388 kW · h/t, wastewater generation is 11 139.7 m ³/d, wastewater generation per unit of product is 14.78 t/t, air emission per unit of product is 0.005 t/t, solid waste generation per unit of product is 0.123 t/t, recirculating cooling water efficiency is 98.9%, and resource utilization rate is 15.3%. Based on the results, the strategy of enhancing material and energy utilization efficiency and reducing the environment pressure could be proposed.