![]() ![]() Another favorable effect of ultrafiltration on the permeate properties more » is disproportionate removal of multivalent ions including the major scaling ion CaS. This Phase II report gives data on viscosity with percentage solids of KBL permeates. Consequent energy savings for the 1000 ton/day pulp mill would be 2.05 x 10 Btu/y for each percentage increase in TDS (total dissolved solids) to the recovery boiler. The liquor could then be concentrated to a higher percentage solids before firing into the recovery boiler. The major justification for examining ultrafiltration was to lower the viscosity of the Kraft Black Liquor by recovering it as an ultrafiltration permeate from which the highest MW lignin had been removed. ![]() The report also documents relevant details of the final design of the pilot flow loop used to support the experiments. This document reports extensive more » results of the evaluations and recommendations for design modifications and for the installation of the instruments in industrial pulping mills for further field evaluations in Phase 3 of the project. The viscometers are evaluated for accuracy and repeatability under varying process conditions, such as black liquor species, solids content, temperature, flow rate, and contaminants, as well as for maintenance and reliability. At a later stage in the project an additional experimental prototype under development at Southwest Research Institute was added. The original plan called for the evaluation of five prototype on-line viscometers along with laboratory bench versions. This report documents the results of the evaluation of the on-line prototype viscometers for kraft black liquors carried out at the Pilot Plant facilities of the University of Florida.
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