Pressurized Groundwood

In pressurized groundwood system, grinding takes place under compressed air pressure where water temperature is high (greater than 95 °C). This allows for higher grinding temperatures without steam flashing. The higher temperature promotes softening of lignin. This improves fiber separation and reduces specific energy consumption (Kramer, et al., 2009. p.96).

Development Status Products
Commercial

Pressurized GroundwoodCosts & Benefits

Parent Process: Mechanical Pulping
Energy Savings Potential

Electricity savings of 20 to 36 percent comparing to mechanical pulping processes at atmospheric pressure are reported in literature (Kramer, et al., 2009. p.96).

CO2 Emission Reduction Potential
Costs

Pressurized Groundwood Publications

Page Number: 

96