VSEP pre-concentrates black liquor in pulp and paper mills to reduce evaporator load and cut energy costs

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Courtesy of New Logic Research, Inc.

As pulp mills have increased production rates to meet market demands, many mills built over the last 20 to 30 years have become limited in evaporator  capacity to treat their black liquor volume. The ability to also recover excess liquor from storage areas to higher solids levels is another demand on the evaporators. For mills with outside storage ponds that receive a large amount of rain, the liquor is diluted and the evaporation of the excess water can become very expensive. The expense of adding new evaporator equipment has provided an opportunity for new technologies to fulfill this need.

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