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This paper describes a cogeneration plant using wood biomass as fuel. Forests cover 56% of the surface area in Slovenia, providing plenty of waste wood to be used as an energy source. Waste wood unsuitable for the lumber industry is ground into biomass of G50 size, which are chips of, measuring on average 3%5 cm and up to 8 cm. Biomass is dried in a drier to reduce its moisture content to 15%. Wood biomass gasification takes place in a gasifier. Carbon monoxide and hydrogen, gasification end products, are used as fuels for a boiler and two gas engines. The boiler heat is used for wood-drying purposes. The cogeneration plant uses a 1 MW Caterpillar generator set and a 0.45 MW MAN generator set. Cooling water waste heat of both gas engines and exhaust gases are used for heating the wood drier and the nearby residential area. V članku je opisana kogeneracija, ki uporablja za gorivo lesno biomaso. Slovenija je dežela, katere površina je 56% pokrita z gozdovi zato ima veliko odpadnega lesa, ki se lahko uporablja kot gorivo. Odpaden les, ki je za industrijsko rabo neuporaben zmeljemo v biomaso granulacije G50. To so sekanci velikosti do 8cm, ki v povprečju merijo od 3-5cm. Biomasa se posuši v sušilcu na vlažnost do 15%. V uplinjevalcu se lesna biomasa uplini. Končni produkt uplinjevanja je ogljikov monoksid in vodik, ki se uporabljata kot gorivo za kotel in plinska motorja. Toplota kotla se uporablja za sušenje lesa. Kogeneracija ima en Caterpillar genset moči 1 MW in MAN genset moči 0,45 MW. Odpadno toploto hladilne vode obeh plinskih motorjev in izpušnih plinov uporabimo za ogrevanje sušilnice lesa in bližnje stanovanjsko naselje. |
