Loading...

Investigation and Identification of Industrial Symbiosis Opportunities in Energy-Intensive Food Industries Exploiting Clean Energy Strategies

Mohammaddini, Shayan | 2024

0 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57058 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Roshandel, Ramin
  7. Abstract:
  8. Various solutions exist for managing the waste generated in the food industry, providing opportunities for industrial symbiosis. The objective of this project is to identify and economically evaluate these solutions for material and heat recovery in the dairy, sugar, and tomato paste industries. Quantities and qualities of the generated waste in the selected industries were first identified. Subsequently, opportunities for waste management were explored. The overall structure of each solution was then modeled, and economic variables such as costs and income in each opportunity were calculated. Economic indicators, including payback period, net present value, internal rate of return, return on investment, and annualized profit, were calculated in two scenarios: (1) the energy services company perspective (baseline scenario) and (2) the opportunity cost of energy perspective (alternative scenario). In the dairy industry, for material recovery, two opportunities were identified: (1) production of electricity and heat using produced biogas and (2) compost production. The first opportunity is economically favorable with a payback period of 7.63 years in both scenarios. In the sugar and tomato paste industries, in addition to the previous opportunities, the opportunity for producing animal feed was also identified. In both industries, this opportunity is economically desirable with payback periods of 0.55 and 1.63 years in the baseline scenario and 1.18 and 2.79 years in the alternative scenario, respectively. In the heat recovery from boiler flue gas section, two opportunities were identified: (1) direct utilization of heat losses and (2) utilization of the organic Rankine cycle. In the dairy and sugar industries, the first opportunity is prioritized over the second opportunity with payback periods of 13.30 and 4.90 years in both scenarios, respectively. In the tomato paste industry, none of the opportunities are economically feasible. Sensitivity analysis revealed that total investment cost, energy carrier prices, and prices of by-products significantly impact economic indicators. changes in investment costs based on factors such as domestic equipment production or the use of higher-quality equipment are among the most influential factors on the changes in the results of economic evaluations. According to the sensitivity analysis results, a 20% increase in investment costs for biogas production opportunities leads to a 7.4 and 11.1-year increase in payback period in the dairy and sugar industries respectively
  9. Keywords:
  10. Food Industries ; Waste Management ; Industrial Symbiosis ; Biogas ; Composting Process ; Animal Feed ; Organic Rankine Cycle (ORC) ; Organic Solid Waste ; Material and Heat Recovery

 Digital Object List

 Bookmark

No TOC