Pyrolysis of cherry and sour cherry pits for the purpose of energy production and value added products

Postoji velik potencijal za iskorištenje poljoprivrednih ostataka i ostataka iz prerađivačke industrije u proizvodnji energije i proizvoda dodane vrijednosti termokemijskim postupcima. Piroliza je relativno jeftin, jednostavan i pouzdan termokemijski proces pretvorbe biomase u energiju. Posljednjih godina istraživanja su obuhvatila mogućnost iskorištenja različitih ostataka te su ukazala na njihov veliki potencijal za proizvodnju energije, ali i za dobivanje tekućih i plinovitih goriva. Trenutno su dostupni podaci o mogućnosti zbrinjavanja koštica trešnje i višnje vrlo oskudni. Stoga je cilj ovog istraživanja utvrditi svojstva koštica trešnje i višnje s ciljem uvida u njihov potencijal u proizvodnji energije izravnim sagorijevanjem i pirolizom. Istraživana biomasa koristit će se kao sirovina za izravno izgaranje, odnosno utvrditi će se njihov energetski potencijal s ciljem dobivanja energije, ali i tekućih i plinovitih goriva. Prije provedbe samog procesa pirolize analizirao se kemijski sastav koštica trešnje i višnje. Provedene su analize sadržaja vode, pepela, koksa, fiksiranog ugljika, hlapivih tvari, utvrđen je lignocelulozni sastav, sadržaj ukupnog ugljika, vodika, dušika i sumpora te su određene gornja i donja ogrjevna vrijednost sirovine. Nakon provedenih analiza i procesa pirolize utvrđen je udio dobivenog biougljena i bioulja čija su svojstva potom detaljnije analizirana.There is a big potential for utilization of agricultural residues and residues from processing industries in energy production and added value products with thermochemical procedures. Pyrolysis is relatively inexpensive, simple and reliable thermochemical procedure of converting biomass into an energy. In past couple of years, research have included the possibility to utilize various residues. Shown is their potential in energy production, as well as the potential in the production of liquid and gaseous fuels. Information and details on possibilities of care for cherry and sour cherry pits are limited. Goal of this rescue is to determine cherries pit properties in order to see what is their potential in energy production by direct combustion and pyrolysis. Biomass that has been explored, will be used as a raw material for a direct combustion. It will be determined energy potential of explored biomass, with a goal to create energy, liquid and gaseous fuels. Before implementation of the process pyrolysis, chemical composition of cherry and sour cherry pits has been analyzed. Analysis have covered following: water content, content of ash, coke, fixed carbon and volatile substances. It was also determined the lignocellulosis system, the total content of carbon, hydrogen, nitrogen and sulphur. Upper and lower heat value of the raw material was determined as well. After all the analysis and process of pyrolysis it has been established the proportion of obtained bio oil and coal. Their performance has been further analyzed, in more details