Every year, breweries handle large volumes of wet brewer’s spent grain (BSG) and other beer residues. These streams are rich in protein, fibers, and residual nutrients, but the high moisture content makes them heavy, unstable, and costly to move or store for more than a short time.
Swedish Exergy’s ExergyPSSD® (Pressurized Superheated Steam Drying) uses superheated steam in a closed-loop system to dry BSG in just a few seconds, while protecting valuable protein fractions and fiber structure for high-value feed applications. The oxygen-free environment prevents oxidation and off-flavours, and the result is a uniform, sterilized product with long shelf life and excellent nutritional value for ruminants and monogastric animals.
Key benefits of brewer’s spent grain with ExergyPSSD®
- Easier handling and year-round availability – Dried BSG become a stable, free-flowing product that is simple to store, dose, and transport, turning a seasonal wet byproduct into a consistent feed ingredient
- Higher feed value and better animal performance – The gentle, short drying time helps protect protein quality, increase bypass protein, improve starch gelatinization, and ensure complete sterilization, supporting better milk yield, weight gain, and animal health.
- Strong energy efficiency, no dryer emissions – The closed-loop steam system typically recovers 80–95% of the input energy and operates without atmospheric emissions, VOCs, or dust from the dryer, reducing both energy costs and environmental footprint.
- Safe operation and consistent quality – With no oxygen in the dryer, the risk of fire and dust explosion is minimized, while the short, controlled residence time delivers uniform moisture content and batch-to-batch consistency.
By moving from wet byproduct handling or conventional hot-air drying to ExergyPSSD®, breweries can turn BSG into a standardized, premium feed component, lower waste management costs, and support circularity targets in one integrated solution. Swedish Exergy has more than four decades of experience in superheated steam drying for animal feed and food residues, helping customers turn side streams into reliable profit drivers.
Swedish Exergy can help you test the concept before you commit. Through pilot drying and feasibility studies, you can see performance on your own material and review key data and product samples.
If you are exploring options for spent grain, trub, or other beer residues, or want to understand how ExergyPSSD® could help your process, contact us and we’ll set up a meeting.
