Steam Cycle Washer for Unbleached Pulp

Significant energy saving opportunities exist with the development and adoption of new and more efficient pulp washing techniques. In the US the US DOE is sponsoring the development of a new steam cycle washer which is being designed to de-water and wash wood pulp using counter-current washing, steam and high-differential pressure. While also saving energy, this technology, which is undergoing demonstration and commercialization, is reportedly uses 70-75% less water than conventional washers because it allows the pulp mat to be washed at a high consistency of 28-32% (Kramer et al., 2009. p.109).

Development Status Products

Steam Cycle Washer for Unbleached PulpCosts & Benefits

Parent Process: Chemical Pulping
Energy Savings Potential

Reduction by 21% in electricity consumption and up to 40% in fuel use for unbleached pulp production.

CO2 Emission Reduction Potential

Not available

Steam Cycle Washer for Unbleached Pulp Publications

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