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

As part of a market with growing demand for their finished products, a large pulp and paper mill in the southern US planned to increase its production and in doing so created an issue with its current capacity to process black liquor efficiently and maintain current economy levels.

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.

Obectives

  • 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

Contact

  • Contact Us

  • This field is for validation purposes and should be left unchanged.

Hide Contact Form