- GEA supplied a turnkey plant for spray drying lignosulfonate, valued in the double-digit million range.
- The plant will be installed in Sarpsborg, Norway, with commissioning scheduled for mid-2019.
- The Sarpsborg plant has an annual capacity of 160,000 tons of lignin.
- The new infrastructure will reduce energy costs and improve environmental safety.
Project Overview
GEA has delivered a turnkey plant for Borregaard, focusing on the spray drying of lignosulfonate. The project, valued in the double-digit million range, includes a new silo for feeding stored powder materials into the packaging system and a large wet scrubber for dedusting. The installation is set for Borregaard's site in Sarpsborg, Norway, with commissioning scheduled for mid-2019.
Production Capacity and Benefits
The Sarpsborg plant has an annual capacity of 160,000 tons of lignin, with an increasing proportion dedicated to special products. The new GEA equipment will optimize production, reduce energy costs, and offer significant environmental and safety benefits.
Spray Drying Process
The plant will process 25 t/h of lignosulfonates, which are fed into a rotary atomizer and spray dried. The final product is separated using two groups of cyclones, including the newly developed Cyclone Extra Efficiency (CEE) for higher separation efficiency, increased yield, and reduced emissions.
Emission Control and Wastewater Reuse
The plant features a large wet scrubber for dedusting, using water to clean exhaust gases before release. The scrubbing water is circulated and concentrated using a falling film evaporator, with the condensate returned to the spray dryer as process water, increasing total product yield. The evaporator is optimized for energy efficiency through mechanical vapor recompression.
