Contribution information

Title Effect of biogas addition to boiler fuel on economic aspects of milk drying
Status Accepted
Final type Lecture
Final session WAS&BIO - Waste and biomass as sustainable energy and material sources
Authors J., Janošovský1, A., Kačmárová2, E., Marková3
1 Institute of Chemical and Environmental Engineering, FCHPT STU, Bratislava, Slovakia
2 Institute of Chemical and Environmental Engineering, FCHPT STU, Bratislava, Slovakia
3 Institute of Chemical and Environmental Engineering, FCHPT STU, Bratislava, Slovakia
Brief content Three scenarios of boiler fuel composition and its impact on project of new milk drying unit profitability were analysed. For the purposes of the process analysis, a mathematical model was constructed in Aspen Plus simulation and verified by real operation data. In the first scenario, only natural gas was fed into the boiler. In the second scenario, biogas with addition of natural gas was evaluated. Third scenario represented a case with complete substitution of natural gas with biogas. Conducted study revealed positive effects of biogas use in dairy industry on the project economics, but it also revealed that volatility in milk market prices and variability of biogas composition lead to difficult predictability of project payback period.
ID 69