Influence of the Type of Heating Furnace on the Process of Burning Briquettes Rolled from Uncut Rye Straw

J. SZCZEPANIAK, P. FRĄCKOWIAK and F. ADAMCZYK
Industrial Institute of Agricultural Engineering, Poznań, 60-963 Poznań

Abstract

SZCZEPANIAK, J., P. FRĄCKOWIAK and F. ADAMCZYK, 2016. Influence of the type of heating furnace on the process of burning briquettes rolled from uncut rye straw. Bulg. J. Agric. Sci., 22: 165–169

In research of Industrial Institute of Agricultural Engineering in Poznan briquetting by the method of the curling to the compaction cereal straw was used. Briquettes from agricultural straw produced by this method are allocated as agricultural biomass combustion for so called small energy. A single briquette is a cylinder of diameter of 85 mm, length of 250-300 mm which are characterized by a high density around 500 kg·m-3. Attempts were made to burn them in two different traditional central heating boilers: Eko Duo 25 with power of 25 kW, STK 22 with power of 22 kW and the one prototype of the rotary grate boiler with power of 25 kW 20 kW produced by PROTECH Sp. z o. o. from Gierałtowice. In research briquettes made from rye straw were used. The study was carried out by observing the combustion process of certain portions of briquettes while making measurements of water temperature at the entrance and exit of the boiler, temperature and gas composition. The study has showed that the total fuel briquettes made from agricultural material excess of air is required and there is a need for frequent, periodic movement of briquettes burning on the boiler grate. Results of gas quality tests have showed that the levels of pollutants do not exceed the legally authorized levels. Results obtained from the combustion of straw briquettes boiler power also do not exceed the values permitted by law.

Key words: uncat cereal straw, burning, heating furnance, agricultural
List of abbreviations: DHW - domestic hot water

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