Kraft Pulp and Paper Mill
Increasing a mill’s capacity to process black liquor while maintaining mill efficiencies.
Date: 2018
Solution Type: Evaporation
Project Overview
The customer contacted Lundberg to help them understand how they could increase their capacity and still maintain cost effective and efficient operations.
Lundberg performed a detail study of the mill’s current operating conditions and developed innovative, out of the box solutions that addressed the capacity increases required but still fell within the mill’s rigorous capital project approval process.
The Lundberg solution included the addition of two new REX crystallizers; a new sixth effect evaporator; an auxiliary surface condenser, plus various liquor and condensate flash tanks and pumps.
The results were the mill was able to continue firing the recovery boiler at >77% solids while maintaining the original steam economy levels.
Q: Why Lundberg?
A: Our Structured Approach
Lundberg performed the process studies and developed a unique, cost effective solution that met the customer’s capital and operational requirements.
Objectives
- Increase black liquor processing capabilities to match planned digester upgrades
- Improve energy efficiency through improved black liquor concentration
Solutions
Addition of two new REX crystallizer; a new sixth effect evaporator; an auxiliary surface condenser, plus various liquor and condensate flash tanks and pumps.
Result
Continue firing the recovery boiler at
%
+ solids while maintaining original steam economy levels
