Modeling of Some Operating Parameters Required for the Development of Fixed Bed Small Scale Pyrolysis Plant

Istvan Bacskai, Viktor Madar, Csaba Fogarassy and Laszlo Toth
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Istvan Bacskai: National Agricultural Research and Innovation Center, Szent-Györgyi Albert st. 4., 2100 Gödöllő, Hungary
Viktor Madar: Pyrowatt Ltd., 6120 Kiskunmajsa, Hungary
Csaba Fogarassy: Climate Change Economics Research, SzentIstvan University, 2100 Gödöllő, Hungary
Laszlo Toth: Department of Energetics, Faculty of Mechanical Engineering, Szent Istvan University, 2100 Gödöllő, Hungary

Resources, 2019, vol. 8, issue 2, 1-15

Abstract: In recent years, we have read a lot of research aimed at creating a small, easy-to-mobilize pyrolysis unit. But these devices were not efficiently designed. According to literature data, small equipment (5.0–50 kW) has to be considered differently on the combustion aspects, compared to a larger pyrolysis unit. The main purpose of our research is to determine the operating characteristics of a small fixed bedding CHP (combined heat and power) pyrolysis power plant. At the design stage, it is also critical to know the properties of the biomass (usually different biological wastes) used on the input side. The use of a wide diversity of biomass waste may result in the volume of material remains and the energy produced is not usable in the right form. To obtain a clear picture of the combustion conditions, a fixed bedding pilot pyrolysis device was made. With the measurements in the experimental apparatus, we have a clearer picture of the changes in some of combustion parameters. We have examined exactly how the size and hardness of biomass materials affect the efficiency of pyrolysis. By modelling the “mass change”—with the knowledge of the material content, physical characteristics, and the parameters of the pyrolysis equipment—the amount of the expected material remains, and combustion conditions can be predicted with a mathematical function. We have found an appropriate mathematical model (R 2 = 0.8758) to describe the relationship between gas production and material structure for a given period.

Keywords: operating parameters; small fixed bed pyrolysis; hardwood chips; mathematical function (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2019
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