Decision Making Method for Energy Retrofit Targets of Waste Gas-to-Energy Units

Decision Making Method for Energy Retrofit Targets of Waste Gas-to-Energy Units

Paper in proceedings outside WoS and Scopus

Many industrial waste gasses, especially from chemical and petrochemical processes, contain combustible substances, which enables their utilization as a promising energy source. Thermal oxidation represents a suitable and proven technology, which is however very energy intensive in terms of external fuel demand dependent on an exhaust heat recovery efficiency. This paper presents a systematic method developed for Energy Retrofit targeting of industrial units for thermal oxidation of waste gasses (waste gas-to-energy units) in order to improve the unit´s waste heat recovery and thus to reduce the external energy demand. This results in operational costs and emissions reduction and enables efficient waste gas energy utilization. The method procedure is further applied to an Energy Retrofit of specific waste gas-to-energy unit, where the fuel saving over 30% was achieved by proposed technological modifications with payback period 5.5 months. Finally, the developed method accuracy was successfully verified by the comparison with non-linear simulation.

Many industrial waste gasses, especially from chemical and petrochemical processes, contain combustible substances, which enables their utilization as a promising energy source. Thermal oxidation represents a suitable and proven technology, which is however very energy intensive in terms of external fuel demand dependent on an exhaust heat recovery efficiency. This paper presents a systematic method developed for Energy Retrofit targeting of industrial units for thermal oxidation of waste gasses (waste gas-to-energy units) in order to improve the unit´s waste heat recovery and thus to reduce the external energy demand. This results in operational costs and emissions reduction and enables efficient waste gas energy utilization. The method procedure is further applied to an Energy Retrofit of specific waste gas-to-energy unit, where the fuel saving over 30% was achieved by proposed technological modifications with payback period 5.5 months. Finally, the developed method accuracy was successfully verified by the comparison with non-linear simulation.

Thermal oxidation; Shifting Flue Gas Line method; waste gas-to-energy unit; Energy Retrofit; fuel saving; VOC; CO

Thermal oxidation; Shifting Flue Gas Line method; waste gas-to-energy unit; Energy Retrofit; fuel saving; VOC; CO

FREISLEBEN, V.; JEGLA, Z.

2021

28.06.2020

Proceedings of the 4th SEE SDEWES Conference

1

0073-1

0073-16

16

http://registration.sdewes.org/SEE2020/virtcon/?pr=6f628a8e4893dd9ac744721d52d7a5df

SEESDEWES2020_FP_73 (1)