Analytical approach for energy retrofit of waste gas-to-energy units

journal article in Web of Science

English

Thermal oxidation represents an efficient and reliable technology for processing industrial waste gases containing combustible pollutants, for example, Volatile Organic Compounds. Thermal oxidation units (or waste gas-to-energy units) enable the heat utilization of the waste gases, which thus become a promising energy source. This is, however, very energy-intensive process requiring a huge amount of primary fuel, which is dependent on the heat recovery efficiency. This paper presents a straightforward and fairly accurate graphic-numerical method for the Energy Retrofit of waste gas-to-energy units, which doesńt require any advanced computational approach. There are provided tailor-made formulas for estimation of maximum reachable fuel savings and tools for the design of specific technological modifications, which results in the increase of the heat recovery efficiency, energy demand reduction, operational costs savings and environmental pollution mitigation, while the unit́s operational safety is also considered. The method is further applied to the Energy Retrofit of a standard industrial unit and a modern compact unit for thermal processing of waste gases. Finally, the developed method́s accuracy was successfully verified by the comparison with non-linear simulation of both studied industrial units.

Waste gas-to-energy unit; Energy retrofit; Conceptual design method; Heat recovery shifting diagram; Primary fuel saving

FREISLEBEN, V.; JEGLA, Z.; KRŇÁVEK, M.

13. 6. 2022

Elsevier Ltd

London, UK

1359-4311

Applied Thermal Engineering

214

1

United Kingdom of Great Britain and Northern Ireland

118828-1

118828-14

14

https://www.sciencedirect.com/science/article/pii/S1359431122007682