Projecção de uma unidade industrial para processamento parcial da castanha de caju utilizando vapor de água

Abstract

In the list of constraints that affect the production of cashew nut kernels in Mozambique, the most notable are inappropriate nut and cashew kernel production (Mole, 2000). In this context, the purpose of this work is to design an industrial unit, which includes a cooker, a dryer, a humidifier and a vat, for the partial processing of cashew nuts, with a view to overcoming the most influential constraint on quality of the almond. A fire tube boiler furnace for burning cashew nut shells (CCC) is designed, capable of delivering sufficient energy in the form of saturated steam, to power the targeted sectors, as well as the sizing of this equipment. A tube bank type heat exchanger is also designed and the use of a filter for gaseous effluents resulting from the burning of the CCC is planned. In relation to the fuel, the lower calorific value (PCI), the combustion temperature in the furnace, the quantity of combustion gases and the fuel consumption are calculated. Also, calculate for the heat exchanger, the global heat exchange coefficient and the area required for heat transfer. The low conversion value of around 6.16% for CCC samples without liquid and the PCI of 23,856.65 kJ/kg make this biomass with applicable potential for fuel production.