Diseño de un proceso industrial para la producción de papel higiénico para el GADIC cañar

Abstract

The objective of this work dealt with designing an industrial process to produce toilet paper from cardboard and recycled paper, starting with a laboratory-scale design that served as the basis for the pertinent calculations and projections. At the laboratory level, three experiments were proposed with differences in the methods of deinking, defibering and pulp bleaching; by performing quality control on the products through the application of the NTE INEN 1430 standard, the optimal and most efficient procedure was identified; in addition, the equipment involved was identified, which, together with the mass and energy balances, allowed for the elaboration of the industrial level projection, which was accompanied by an economic feasibility analysis. The statistical analysis for the data obtained during the quality control was carried out by implementing ANOVA and TUKEY tests. Significant differences were found between the procedures proposed and the optimum procedure was established with a yield of 56.282%, where the starting point was a de-inking prior to defibering, and the pulp was subjected to two bleaching processes with sodium hypochlorite and hydrogen peroxide. Finally, the industrial process proposed, with an ARV of 5211.62, IRR of 20% and a recovery period of approximately 4 years, proved to be viable with the conditions determined; however, there is the possibility of optimization, for which it is recommended to analyze additional bleaching methods that reduce production costs; as well as pulp recovery systems that can be applied in the wastes of the washing systems to increase the process yield.