COMPARED CFB COMBUSTION AND DESULFURIZATION OF LIGNITE AND BITUMINOUSCOAL

The serious problems Romania's energy sector is currently facing requi re a large-scale implenentation of up-to-date technologies, characteri sed by both high efficiency and environmental friendly nature [1]. Sin ce the main fuels used for power generation are local low-grade coal a nd imported bituminous coal, ICPET-Cercetare has begun a series of exp eriments comprising laboratory analyses and circulating fluidised bed combustion (CFBC) and desulfurisation tests. nle rests focused on the combustion of sever;ll lignite and bituminous coal types, with the pur pose to develop our own CFBC technology. The test ring used for experi ments - a 1 MW CFBC pilot plant - is briefly described, The parameters measured during the tests - temperatures, pollutant emissions - are c ompared to give an accurate image of the effects of the fuel type, of the operating parameters and the behaviour of the boiler. The desulfur isation was performed by addition of limestone. The tests confirmed th at the combustion and desulfurisation of different fuel types can be p erformed on the same CFBC plant with high efficiency. The results obta ined enabled us to accomplish technical designs for CFB boilers.