Improved Brownstock Washing

Replacing conventional drum washer units with vacuum pressure with pressure diffusion or wash presses for brownstock washing can reduce electricity and/or heat consumption, while also reducing bleaching chemical usage. Wash presses, in particular, have demonstrated improved energy efficiency and have experienced wider adoption (Kramer et al., 2009. p.92-93).

Development Status Products
Commercial

Improved Brownstock WashingCosts & Benefits

Parent Process: Bleaching
Energy Savings Potential

Estimated energy savings can be as much as 001 GJ/ton of production. Electricity savings may be around 12 kWh/ton of production (Kramer et al., 2009. p.93).

CO2 Emission Reduction Potential
Costs

Improved Brownstock Washing Publications

Page Number: 

92-93