Open AccessControl of the accumulation of non-process elements and organic compounds in pulp mills with bleach filtrate reuse. Milestones and progress, Quarter 8 (April 1--June 30, 1998)
Author(s) -
W J Frederick,
M L Laver,
G L Rorrer,
A W Rudie,
W Schmidl
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/656573
Subject(s) - reuse , schedule , operations research , scheduling (production processes) , computer science , pulp (tooth) , industrial engineering , operations management , engineering , waste management , medicine , pathology , operating system
Overall, this project is on schedule and proceeding as planned. Two approach changes are recommended. One is to rely on commercially developed software, in particular that developed by OLI Systems, Inc., and now being expanded in a collaborative effort between OLI Systems, Inc. and IPST to provide a simulation package for the pulp and paper industry and to integrate it with existing process simulation tools used by that industry. The second is the development of a detailed brownstock/bleached fiber washer model as a tool to evaluate the data and methods developed in this study, and to demonstrate its utility to industry. Both of these are discussed in more detail in the Approach Changes section of this report. Two tasks are behind schedule. They are Task A-2.3, Measurement of stability constants for wood organics with metal ions (scheduled completion date: 6/98), and Task C-1.2, Estimation of unavailable thermodynamic parameters (scheduled completion date: 12/97). The reasons and expected completion dates for these tasks are discussed in the Performance Variances and Open Items section of this report. All other tasks are either completed, or on or ahead of schedule