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3 Ways to Minimize Digital Risk, Paper360º January/February 2021
3 Ways to Minimize Digital Risk, Paper360º January/February 2021
Journal articles
Magazine articles
At WestRock, Safety is Universal At WestRock, Safety is Universal, Paper360º January/February 2021
At WestRock, Safety is Universal At WestRock, Safety is Universal, Paper360º January/February 2021At WestRock, Safety is Universal At WestRock, Safety is Universal, Paper360º January/February 2021
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Coarse Filtration is the ´First Line of Defense’, Paper360º January/February 2021
Coarse Filtration is the ´First Line of Defense’, Paper360º January/February 2021
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Coming Out of the Coronavirus Pandemic, Paper360º January/February 2021
Coming Out of the Coronavirus Pandemic, Paper360º January/February 2021
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Over the Wire, Paper360º January/February 2021
Over the Wire, Paper360º January/February 2021
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RMM Part 2: Belief-Driven Strategy, Paper360º January/February 2021
RMM Part 2: Belief-Driven Strategy, Paper360º January/February 2021
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TAPPI Journal Summaries, Paper360º January/February 2021
TAPPI Journal Summaries, Paper360º January/February 2021
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TAPPI News, Paper360º January/February 2021
TAPPI News, Paper360º January/February 2021
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A Challenging Year, Paper360º July/August 2021
A Challenging Year, Paper360º July/August 2021
Journal articles
Magazine articles
Addressing production bottlenecks and brownstock washer optimization via a membrane concentration system, TAPPI Journal July 2021
ABSTRACT: Advancements in membrane systems indicate that they will soon be robust enough to concentrate weak black liquor. To date, the economic impact of membrane systems on brownstock washing in kraft mills has not been studied and is necessary to understand the viability of these emerging systems and their best utilization.This study investigated the savings that a membrane system can generate related to brownstock washing. We found that evaporation costs are the primary barrier for mills seeking to increase wash water usage. Without these additional evaporation costs, we showed that our hypothetical 1000 tons/day bleached and brown pulp mills can achieve annual savings of over $1.0 MM when operating at higher dilution factors and fixed pulp production rate. We then investigated the impact of increasing pulp production on mills limited by their equipment. In washer-limited mill examples, we calculated that membrane systems can reduce the annual operating cost for a 7% production increase by 91%. Similarly, in evaporator-limited mill examples, membrane systems can reduce the annual operating cost for a 7% production increase by 86%. These results indicated that membrane systems make a production increase significantly more feasible for these equipment-limited mills.