Jul 24,2024
In the craft beer industry, products that offer rich aromas and pure flavors are particularly enticing. However, brewing beer is not just an art, it’s also a business.
For breweries worldwide, pushing boundaries means finding new ways to brew the best beer while increasing production, shelf life, and profitability.
Beer centrifuges have revolutionized this industry, enabling breweries to elevate both their operations and products to new heights.
Centrifuges use centrifugal force to separate solids from liquids. Specifically, beer centrifuges remove proteins, hops, yeast, and other particles from beer before transferring it from fermentation tanks to bright tanks.
During brewing, significant amounts of dry hop solids, residual yeast, and trub can lead to beer losses and economic waste. Beer clarification centrifuges maximize the recovery of these resources, thereby increasing beer yield.
Fermentation tanks typically contain up to 80% of brewable beer at the bottom, and even more beer can be recovered from unclarified hot trub. Using centrifuges to process all beer during brewing processes helps avoid waste, making them an ideal solution for both small and large-scale brewers.
Beer centrifuges accelerate sedimentation through two primary methods.
Firstly, high-speed rotation within a cylindrical bowl generates powerful centrifugal force, pushing denser solids towards the outer wall of the bowl.
Secondly, centrifuges incorporate additional settling surfaces within the bowl by vertically arranged conical discs (disc stack), reducing settling distances and forming multiple shallow settling pools to accelerate yeast and sludge deposition towards the discharge port.
These discs also allow fine control over the separation process, optimizing efficiency.
By adjusting the interface position, unwanted components can be swiftly removed, ensuring maximum beer recovery. Heavier solids collect at the periphery of the bowl and are intermittently discharged.
Bowl: The core component where beer rotates at high speed, separating solids and liquids via centrifugal force.
Disc Stack: A set of vertically arranged conical discs that increase settling surface and efficiency, rapidly separating solid particles.
Feed System: Introduces beer containing suspended particles into the centrifuge bowl.
Discharge System: Used to release separated clear beer and solid sediment. Typically includes a liquid outlet and solid discharge ports.
Hydraulic System: Controls sliding components within the bowl for intermittent solid discharge.
Drive System: Typically composed of an electric motor and frequency inverter, providing the high-speed rotation required by the bowl.
Control System: Monitors and adjusts operational parameters of the centrifuge to ensure optimal separation efficiency.
Consistency in Clarity Control: Ensures consistent product turbidity by effectively managing sedimentation.
Removal of Contaminants: Eliminates beer spoilers like burnt hops and pectins, enhancing overall quality.
Increased Yield: Boosts production output by 5% to 10% using the same amount of raw materials.
Extended Shelf Life: Helps prolong beer shelf life by reducing unwanted compounds.
Efficiency Gains: Significantly reduces labour and energy consumption compared to traditional methods.
Versatile Applications: Enhances operational efficiency across various brewery processes.
Beer centrifugation and mechanical filtration each offer unique advantages and are often used in tandem. Centrifugation uses centrifugal force to separate heavier solids based on density, whereas filtration separates particles based on size.
In practical brewery applications, centrifugation typically precedes filtration. Centrifuges efficiently remove larger solid particles, thereby easing the workload for subsequent filtration processes. This combined approach is particularly effective when aiming to extend beer shelf life. For beers intended for export or extended supermarket shelf display, filtration becomes indispensable to prevent chill haze.
However, breweries aiming to produce unfiltered beers with faster inventory turnover find standalone centrifugation highly beneficial. Centrifuges effectively remove unwanted particles while preserving beer aromas and volatile compounds, thus maintaining flavor and quality.
Selecting the appropriate centrifuge size for a brewery involves careful consideration of factors such as solid content, throughput, and production goals.
Centrifugation is a mature technology in beer production, offering numerous advantages including enhanced consistency, quality improvement, accelerated tank turnover, loss control, and efficient management of raw material and beer contact times.
While many craft breweries prioritize centrifuges as primary investments or upgrades, several factors must be evaluated when choosing the right size and system for your brewery:
The amount of hops used in craft brewing often results in higher solid content, making it a critical factor to consider. Depending on the solid content, maximizing recovery of bottom beer is crucial. Even the smallest centrifuge models can significantly increase beer production, with potential boosts ranging from 5% to 15%.
Minimizing oxygen absorption is a key concern for all breweries, especially those producing oxygen-sensitive IPAs. Opting for a multi-functional centrifuge with excellent axial sealing can dramatically reduce dissolved oxygen absorption to ultra-low parts per billion (ppb) levels.
This enhances product stability without the need for carbon dioxide or deoxygenated water, thereby extending shelf life.
Throughput not only affects production capacity but also directly influences operational efficiency and cost-effectiveness. Choosing an appropriately sized centrifuge ensures your brewery can meet peak production demands while maintaining stable operations.
High-throughput centrifuges handle larger batches efficiently, improving overall production efficiency, reducing production cycles, and maximizing equipment utilization.
The Huading BRSX Series centrifuge precisely controls material separation through optimized disc angles, spacing, and shapes, allowing adjustments based on liquid flow and solid content variations. This centrifuge is autonomous, flexible, and programmable, requiring minimal operator intervention.
Its high drum rotation speed and specific disc design deliver enhanced centrifugal force and separation area, ensuring effective processing for a range of beers from New England IPAs to Pilsners.
Post-installation, breweries can increase output by 30% to 50% by recovering beer from sediment in fermentation tanks and reducing batch times, all without the need for additional tanks or labor.
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