Yeast Recovery Centrifuge – Continuous Yeast Separation & High-Viability Recycling with Automated Valve Control

The Multi-Purpose Beer Yeast Recovery Centrifuge is a versatile separation platform engineered to deliver three essential functions in a single machine: beer clarification, yeast concentration, and high-viability yeast recovery for repitching. Unlike conventional centrifuges optimized exclusively for clarification, this system incorporates specialized design features that protect yeast cell integrity during the separation process, preserving viability rates above 95% for recovered yeast slurry. The automated pneumatic valve manifold, controlled by the integrated PLC, enables seamless switching between operating modes without manual reconfiguration. In clarification mode, the centrifuge produces brilliantly clear beer ready for filtration or packaging. In yeast recovery mode, it gently concentrates yeast from the fermenter cone to a consistent pitchable density while rejecting dead cells and trub. The combined mode simultaneously clarifies beer while recovering a viable yeast fraction for subsequent fermentation batches. This multi-function capability eliminates the need for separate clarification and yeast handling equipment, reducing capital investment and freeing valuable floor space in the brewery cellar.

• Triple-Function Operation: One machine performs beer clarification, yeast concentration, and high-viability yeast recovery. The PLC-managed automated valve manifold controls flow routing for each mode, enabling mode transitions in minutes without mechanical reconfiguration or manual valve operation.
• High-Viability Yeast Recovery Technology: Specially designed low-shear disc stack geometry, optimized bowl speed settings, and gentle discharge mechanisms minimize mechanical stress on yeast cells during separation. Recovered yeast consistently demonstrates viability rates exceeding 95% as verified by methylene blue staining, enabling confident repitching for multiple fermentation generations.
• Automated Pneumatic Valve Control: A fully automated valve manifold using sanitary pneumatic diaphragm valves controls all process flow paths. The PLC executes mode-specific valve sequencing, ensuring correct flow routing for clarification, yeast recovery, CIP, and standby modes without operator intervention.
• Dead Cell and Trub Rejection: The centrifugal separation process naturally stratifies particles by density, allowing selective rejection of heavier trub particles and lighter dead yeast cells while collecting the healthy, viable yeast fraction in the middle density band. This selective harvesting improves fermentation performance compared to simple cone-to-cone repitching.
• Recipe-Based Mode Management: Pre-configured operating recipes for common yeast strains (ale, lager, wheat) and beer styles automatically set optimal bowl speed, discharge timing, and valve positions. Custom recipes can be created and stored for proprietary yeast strains or unique process requirements.
• Inline Yeast Density Monitoring: An optical density sensor on the yeast concentrate outlet provides real-time cell concentration measurement, enabling the PLC to modulate discharge frequency and maintain consistent pitching rates batch after batch.
• Sanitary Design for Yeast Handling: All yeast-contact surfaces are fabricated from SS316L with electropolished finish and are fully CIP-capable. The yeast discharge path features minimal dead legs, smooth radius bends, and continuous slope toward the outlet to prevent yeast settlement and potential contamination.
• Integrated Temperature Control: Jacketed yeast collection piping and an optional chilled water circulation system maintain yeast slurry temperature during the recovery process, preserving viability during extended collection periods in warm ambient conditions.

This multi-purpose centrifuge is the ideal solution for breweries seeking to optimize both clarification performance and yeast management within a single equipment footprint. Primary applications include harvesting viable yeast from fermenter cone sediment for repitching, clarifying green beer while simultaneously recovering a healthy yeast fraction, and concentrating yeast slurry to consistent pitching densities for automated pitching systems. The machine is particularly valuable for breweries propagating proprietary yeast strains, where preserving genetic stability and viability across multiple fermentation generations directly impacts product consistency and brand identity. It also serves breweries producing multiple beer styles with different yeast strains, as the recipe management system eliminates cross-contamination risks through validated CIP cycles and dedicated yeast collection paths. Beyond brewing, this platform supports yeast harvesting in industrial biotechnology for enzyme and biofuel production, concentration of starter cultures in dairy processing, and recovery of valuable biomass in pharmaceutical fermentation. The gentle handling characteristics and viability preservation features make it equally suitable for sensitive mammalian cell culture applications in biopharmaceutical manufacturing.

Each Multi-Purpose Yeast Recovery Centrifuge is shipped in a custom ISPM 15-compliant wooden crate with specialized internal fixturing to protect the precision disc stack and valve manifold during transport. The pneumatic valve manifold and instrument package are separately crated with protective packaging. All openings are sealed and the bowl interior is nitrogen-purged. The shipment includes the fully assembled skid-mounted centrifuge with pre-installed valve manifold, PLC control panel with pre-loaded yeast strain recipes, a comprehensive startup kit with spare seals, gaskets, diaphragms, and critical consumables, detailed operation and maintenance manuals in English and Chinese, and an installation supervision service voucher. Quality assurance includes dynamic balancing certification, pressure integrity testing, valve actuation sequence verification, recipe mode functional testing, simulated yeast recovery process run, and optical density sensor calibration against laboratory reference standards. All yeast-contact surfaces are verified to meet surface finish specifications of Ra ≤ 0.8 μm. Each unit is covered by a 12-month warranty, with optional extended warranty programs available. Our applications engineering team provides ongoing support for yeast management optimization, including strain-specific parameter tuning and troubleshooting assistance.