Análise térmica e ambiental da queima do lodo primário da fabricação de papel e celulose em caldeira de biomassa à grelha

Abstract

The lack of ground that is used like landfill where the wastes are deposited, it’s a great problem in the pulp and paper mills in Brazil and in the world. Primary sludge is a waste produced in the pulping and bleaching processes and the processes of formation of paper’s sheet, nowadays these wastes are deposited in the landfills. The description of the processes and the quantity of the mills in Brazil show the dimension of the problem, about 2,0% of the pulp and paper are lost like the primary sludge, the fired in biomass boiler abides by the law of the thermal treatment to sludge in Brazil. This work shows the thermal analysis, besides the analysis of emissions of this waste fired in a grate boiler, it present the news technologies to burn the biomass and the control of pollutants emissions. The thermal analysis and the real parameters of operation get the dates of efficiency of the boiler. It introduces the case of the Suzano Papel e Celulose.