Lime mud pumped from the white liquor clarifiers still contains a significant amount of white liquor. This liquor must be removed from the mud before the mud is sent to the kiln, or it will cause ring formation in the kiln and increased sulfur emissions. In order to remove the white liquor, the mud is mixed with water and filtrates, and then resettled in a sedimentation clarifier. This module will identify and describe the major components of a lime mud washer.
Learning Objectives
At the end of this module, you will be able to:
- Identify and describe the major components of a lime mud washer
- Describe the purpose and operation of a lime mud washer
- Identify and describe the typical process flows in a lime mud washer
- Describe the negative impacts of improperly washed/filtered lime mud
- Identify key safety considerations when working around a lime mud washer