Effect of different pulping process from wheat straw on refiner energy consumption

In this study the beatability of soda and monoethanolamine pulps was compared. The refining of pulps was done in pilot scale Voith refiner Model LR ۴۰. The results showed that the maximum tensile and burst indices of monothanolamine pulp are reached with consuming ۷۰ KWh/t energy in pilot scale Voith refiner and the increasing of energy more than this level had the adverse effect on these indices. In the case of soda pulp increasing the energy up to ۵۰۰ KWh/t had the linear relationship with tensile and burst indices. In comparison to monoethanolamine pulp, the refining of soda pulp was more difficult and needs more energy. Using monoethanolamine pulp resulted in saving energy by ۷۰-۸۰ % to reach the optimum strength indices.

Keywords:

Wheat straw , Pulping , Monoethanolamine , Soda , Refining , Energy consumption.