Hygienic brewery process lines are the interconnected systems of pumps, heat exchangers, separators, valves, tank cleaning units, and control equipment that move, heat, cool, clarify, and sanitise product from raw materials through to packaged beer. Every product-contact surface must meet hygienic design standards so that CIP cycles reach all internal geometries without manual disassembly. Production engineers specifying new equipment or upgrading existing lines will find this page covers the full equipment scope, from brewhouse to filling.

Brewery production divides into a hot area and a cold area. The hot area spans mashing, lautering, wort boiling, and wort cooling; the cold area covers fermentation, conditioning, the beer filtration process, carbonation, and filling. Temperature ranges, pressure ratings, and CIP chemistry differ substantially between these zones. Stainless steel grades such as 1.4404 (316L) are standard for product-contact components, while EPDM and silicone seals are selected based on temperature exposure and the sanitation chemicals in use.

Euroflow is an Alfa Laval Master Distributor serving Southern Germany, with offices in Baden-Württemberg and Bavaria. The company supplies Alfa Laval process equipment across the full brewery cycle — from LKH centrifugal pumps and plate heat exchangers for wort cooling, to Toftejorg tank cleaning heads, Brew-series disc centrifuges for clarification, the Aldox Mini water degassing unit, and the KZE short-time pasteurisation unit. Because no two breweries operate identically, Euroflow sizes and configures equipment to each brewery's throughput, raw material profile, and sustainability targets rather than applying a generic configuration.

A hygienic brewery process line is not a single product — it is a system of distinct equipment categories, each solving a different process challenge. The table below summarises the main categories, their defining technical characteristics, and the process stages where they are typically specified based on Alfa Laval's core portfolio.

Pumps: centrifugal and rotary lobe

Centrifugal pumps handle the majority of liquid transfers in a brewery — wort, beer, water, and CIP chemicals. In the Euroflow range, models like the LKH-10/163 facilitate product transfer, operating at up to 200 hl/h against 3 bar. CIP supply circuits often utilize standard centrifugal pump designs such as the SolidC-2/170, rated for up to 300 hl/h at 2.5 bar. CIP return circuits present a different challenge: the return line may run partly empty, requiring a self-priming pump. The LKH Prime 20 is designed for this suction requirement, moving up to 250 hl/h of cleaning medium against 2.5 bar.

Yeast harvesting requires specialized handling. Harvested yeast is a highly viscous suspension. A rotary lobe pump, such as the Optilobe 12, handles this duty at 10 hl/h against 2 bar, offering the low-shear performance necessary for sensitive yeast cultures while remaining CIP-capable.

Heat exchangers: wort cooling and pasteurisation

Plate heat exchangers in brewery applications span different operating envelopes. An M6-MBASE wort chiller cools 80 hl/h of hot wort (98 °C) down to pitching temperature (11 °C) using cooling water (6 °C to 82 °C). In contrast, a flash pasteuriser (KZE unit) operates under pressure to stabilize beer. The KZE system supports capacities from 20 to 50 hl/h, can reach pasteurisation temperatures up to 78 °C, and achieves approximately 92% heat recovery. High-pressure frames, like the M6-MFHC, are rated for carbonated beverages up to 18 bar.

Tank cleaning, valves, and separation

Tank cleaning equipment within the Toftejorg line covers different scales. SaniMicro heads suit small vessels (0.5–10 hl) with a cleaning radius of 0.6 m, while SaniMidget units address tanks up to 100 hl. Large fermentation vessels (150–5,000 hl) require 3D rotary jet heads like the TJ 20G or TJ 40G, which operate at pressures up to 12 bar to ensure thorough coverage. For product routing, Unique Seat Clean double-seat valves provide mix-proof separation to prevent cross-contamination. Separation modules — the Brew 20 for 4–15 hl/h and the Brew 80 for 10–50 hl/h — facilitate continuous clarification of wort and beer without manual filtering consumables.

Each stage of the brewing process places specific demands on material compatibility, pressure ratings, and hygiene standards. The table below maps specific products to process stages based on standard technical configurations. For a broader view of how these systems integrate, the Alfa Laval product range covers everything from craft-scale operations to large commercial facilities through the master distribution network.

The Hot Block: Wort processing and aeration

Wort leaving the kettle at approximately 98 °C must be chilled before fermentation. An M6-MBASE plate heat exchanger achieves this by transferring heat into the cooling water circuit, which reclaims energy for secondary processes. Following cooling, separation modules like the Brew 20 or Brew 80 remove hot trub and particulates. For initial yeast cultivation, the Carlsberg flask provides a laboratory-scale sterile environment (25 litre net volume) for pure culture propagation before transfer to larger tanks.

Water treatment is critical for maintaining flavour profile. The Aldox Mini system degasses water to a residual oxygen content below 0.02 ppm. This prevents oxidation during subsequent blending or rinsing stages. Brewing water quality must be tightly controlled, typically requiring a pH between 6.5 and 7.5 and hardness levels between 50 and 150 mg/L as CaCO₃ to ensure enzymatic efficiency and yeast health.

The Cold Block and Packaging

In fermentation and conditioning tanks, the Iso-Mix IM-15 tank mixer provides homogenisation for tanks up to 1,000 hl. This single unit facilitates carbonation, degassing, and cleaning, operating at pressures between 2 and 12 bar. After primary maturation, separation modules are used for green beer clarification, removing yeast cells to improve final stability. If the product requires extended shelf life, the KZE unit provides Kurzzeiterhitzung (flash pasteurisation), processing up to 50 hl/h at temperatures up to 78 °C.

Integration of a CIP system brewery workflow involves high-flow supply pumps and self-priming return units. The SolidC pump provides the robust 300 hl/h supply necessary for line velocities, while LKH Prime units handle aerated return media. At the routing stage, Unique Seat Clean valves ensure process safety by preventing the mixing of cleaning fluids with the beer stream through their vermischungssicheres design.

Design principles of hygienic process components

A hygienic brewery process line relies on components that eliminate dead zones and ensure complete cleanability. Materials such as 1.4404 (316L) stainless steel are standard for product-contact parts, paired with EPDM or silicone seals for chemical resistance. Pumps provide the motive force for both production and sanitation. Centrifugal pumps like the LKH series use high-efficiency designs for low-viscosity product transfer, with motor options such as 4.0 kW units from ABB allowing for variable frequency drive control. For high-viscosity media such as harvest yeast, the rotary lobe design of the Optilobe manages 10 hl/h at 2 bar without causing cell damage.

Thermal processing typically occurs via plate heat exchangers. These units utilize corrugated plates to create turbulence, maximizing heat transfer. In a wort cooling application, this allows 98 °C wort to reach 11 °C rapidly. For flash pasteurisation, the system must hold beer at a specific temperature (max 78 °C) to destroy microorganisms before rapid cooling, often reclaiming up to 92% of the thermal energy through rekuperativ heating zones.

Critical selection criteria for brewery systems

Selection depends on throughput, pressure, and media characteristics. A brewery must size pumps based on the target 1.5 m/s flow velocity required for effective CIP turbulence. Supply pumps must deliver high volumes (e.g., 300 hl/h), while return pumps must handle the air-liquid mixtures common in emptying vessels. Tank cleaning heads must be matched to tank volume: 3D rotary jet heads (TJ series) are necessary for fermentation vessels above 150 hl to provide the impact required for cleaning yeast rings, whereas smaller tanks can utilize rotating spray heads (SaniMidget).

CIP and Hygiene Frameworks

Effective sanitation follows a structured Five-Stage CIP cycle. This ensures protein removal, mineral scale dissolution, and final sterilization.

Microbiological and Quality Monitoring

Verification is performed through routine sampling. This identifies potential contamination early in the Bright Beer Tank (BBT) or filling line.

HACCP and Water Quality Controls

Critical Control Points (CCP) focus on biological and chemical hazards. For example, HCP-01 ensures the caustic wash reaches 70 °C to eliminate viable organisms, while HCP-02 monitors final rinse conductivity to ensure zero chemical residual (limit < 20 µS/cm). Brewing water quality is equally vital, requiring daily pH checks (6.5–7.5) and weekly hardness monitoring (50–150 mg/L as CaCO₃).