OCR Text |
Show the main objectives of the experiments was to make a comparison between combustion of bio-oil and heavy fuel oil, a number of Y -jet and internal-mix atomisers were used (see Figure 2). Also, a number of non-standard atomisers were tested such as single hole slurry atomisers. JIcb 2.1m pu'9I! or O-200kgh t--+--_......I rdu'a( GIll J--4---~ 0-200~ Figure L Industrial boiler simulation for biomass liquid fuel evalu,ation The physical properties of the two bio-oils studied were significantly different and highly variable. The first oil had a viscosity of below 10 mm2/s at 700c, a LCV of 14-20 MJ/kg and contained about 20/0 by weight of char particulates. The second pyrol ytic biomass oil had an extremel y high viscosi ty, greater· than 500 mm2/s at 700c, a LCV . of about 26 MJ Ikg and contained approximately 250/0 by weight of char particulates. air ex HR>cr $leon P8-CII( Ioterm! Mjl( Figure 2. Atomise1'8 used in the evaluation of Bio oils NOx reduction was possible with both the bio-oils studied in this work but flame stability is a problem when compared to heavy fuel oil and further investigations are required. |