STUDY OF DERIVATIVE SOLIDS OBTAINED FROM ELECTROCOAGULATION OF THE WORT DISTILLERIES CORROSION INHIBITOR BRASSES SEA WATER TO HIGH TEMPERATURES

Abstract

The main objective is the study of solids obtained from electrocoagulation of the vinaza of the Combined Distillery-Brewery Hatuey in Santiago de Cuba, as corrosion inhibitors of brasses in hot sea water, and the analysis of the variables that influence in the corrosion rate and the efficiency of the obtained ecological inhibitor of the vinaza. The vinaza is a residual of the process of alcohol distillation of starting from the final molasses of the sugar cane. Experiments of corrosion were carried out without using the inhibitor, and also with inhibitor using the gravimetric method. The solids obtained from the accumulated foam deriving from the electrocoagulation of the vinaza were evaluated as inhibitors of the corrosion of common brass in
sea water at high temperatures. The analysis of the influence of the variables in the corrosion rate, was developed by means of a multi level factorial experiment design obtained in the professional program STATGRAPHICS 5.1, considering as independent variables: the temperature and the concentration of the inhibitor with the purpose of obtaining a good combination of these variables that allow higher efficiency of
inhibition of the corrosion. The obtained results were satisfactory, since the use of this inhibitor influenced the values of corrosion rates obtaining a significant decrease, due to the concentration of the inhibitor until reaching a stable rate; this means that, although the concentration of the inhibitor is increased, the corrosion rate is not possible to further diminish.