Higher dry solids generates more energy
Modern mills rely on very high final dry solids liquor from the evaporation process in order to extract maximum energy efficiency from the chemical recovery boiler. Depending upon the chemical composition of the liquor, the viscosity of the liquor as it is being concentrated increases to such a level that makes further liquor processing difficult, as the highly viscous liquor plugs the process equipment.
In the ANDRITZ Liquor Heat Treatment (LHT) system, the liquor is processed at elevated temperatures which permanently reduces the liquor viscosity so that it can be stored, transported, and combusted at higher dry solids levels.
ANDRITZ LHT applications
- Kraft liquor
- Soda liquor
- NSSC liquor
High energy efficiency
An LHT system and process can be easily integrated into multiple-effect evaporators and concentrators – or can be operated as a standalone system. The system is engineered and designed for maximum energy efficiency with heat sources integrated into existing processes.
