METHOD AND APPARATUS TO DISPLACE SPENT LIQUORS IN A DIGESTER

摘要

An apparatus and method for use in a batch digesting process to quantitatively displace fluids in the digester (10) by pumping into the digester (10) under pressure a first volume of displacing fluid at the upper end (22) and a second volume of displacing fluid at the lower end (21) of the digester (10). Displaced fluids are collected and removed form the digester near the midline (25) between the top and the bottom of the digester.