A high-pressure inline homogeniser forces liquid feed through a precision-machined homogenising valve at pressures of 100–1,500 bar — generating intense shear, cavitation, turbulence, and impact forces that reduce particle size to <0.1–1 µm, enabling nanoemulsions and liposome production inaccessible to rotor–stator designs. Processing 1–50,000 cP at 50 L/h–20,000 L/h, it is the standard technology for sterile pharmaceutical parenteral emulsions, dairy UHT homogenisation, and nano-particle formulation.
Challenges
Valve Seat Erosion at High Operating Pressure (>500 bar)
Continuous high-velocity fluid through narrow valve gap erodes seat geometry — PSD drift.
Piston Seal Wear and Product Leakage at Maximum Pressure
Piston seal failure at >500 bar causes product bypass and significant pressure loss.
Product Temperature Rise (ΔT = 2°C per 100 bar Pressure Drop)
At 400 bar, product rises 8°C — requires interstage or post-homogeniser cooling for thermolabile APIs.
Limited Throughput vs. Rotor–Stator at Equivalent Power
High-pressure piston design limits maximum throughput to 20,000 L/h vs. 50,000+ L/h for rotor–stator.
Pulsating Flow from Piston Action Affecting Downstream Process
Single or twin-piston designs produce pressure pulsations — dampener required on sensitive lines.
Solutions
- Ceramic or Tungsten Carbide Valve Seat and Impact Ring: Sintered TC or alumina ceramic valve extends service life 8–15× against corrosive and abrasive fluids.
- PTFE-Based Piston Seals with Cooling Water Flush: Cooled PTFE piston seal assembly rated >10,000 hours at 1,500 bar operating pressure.
- Interstage Plate Heat Exchanger (ΔT Target <5°C Post-Stage): Product cooled between piston and valve stages — maintains thermolabile API below degradation temperature.
- Triple-Piston (3-Throw) Crankshaft Drive (Pressure Variation ±3%): Three pistons at 120° phase offset reduces pulsation to ±3% — acceptable without dampener.
- Pulsation Dampener (Bladder Type, 0–1,500 bar Rated): Bladder dampener absorbs pulsation to <±1% on downstream instrumentation and process lines.
Applications
- Pharmaceutical: Parenteral fat emulsions (TPN), sterile nanoemulsions, liposome size reduction, API nanoparticles.
- Dairy: UHT milk homogenisation, cream standardisation, cheese emulsion, protein beverage.
- Food & Beverage: Salad dressing, mayonnaise, infant formula homogenisation, beverage cloudifier.
- Biotechnology: Cell disruption for intracellular protein extraction, virus-like particle processing.
- Chemical: Nano-pigment dispersion, polymer nano-latex, specialty chemical ultra-fine emulsion.
Models & Capacities
Type 3 — High-Pressure Inline Homogeniser Valve Type (5 L/h Lab to 120,000 L/h Large Production) | |||||||||||
Flow Rate [L/h] | Homogenising Pressure [bar] | Stages (valve) | D90 [µm] | Droplet D50 [µm] | Pump Motor [kW] | Max Temp [°C] | Max Viscosity [cP] | Inlet/Outlet Ø [mm] | Overall L×W×H [mm] | Weight [kg] |
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5–50 | 50–500 | 1–2 | 0.1–1 | 0.05–0.5 | 1.5 | 90 | <2,000 | DN 6 | 450×200×350 | 55 |
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10–150 | 50–1,000 | 1–2 | 0.1–1 | 0.05–0.5 | 3.0 | 90 | <3,000 | DN 10 | 550×250×400 | 90 |
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50–500 | 50–600 | 1–2 | 0.1–2 | 0.05–0.5 | 5.5 | 95 | <5,000 | DN 15 | 700×320×500 | 180 |
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100–1,500 | 50–500 | 1–2 | 0.1–2 | 0.05–0.5 | 11 | 95 | <5,000 | DN 20 | 850×380×580 | 310 |
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500–3,000 | 50–400 | 1–2 | 0.1–5 | 0.05–1 | 22 | 95 | <8,000 | DN 32 | 1,050×480×700 | 650 |
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1,000–6,000 | 50–350 | 1–2 | 0.2–5 | 0.05–1 | 37 | 95 | <8,000 | DN 40 | 1,200×560×800 | 950 |
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3,000–15,000 | 50–300 | 1–2 | 0.2–5 | 0.1–2 | 75 | 95 | <10,000 | DN 65 | 1,500×680×980 | 1,600 |
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6,000–30,000 | 50–250 | 1–2 | 0.2–10 | 0.1–3 | 132 | 95 | <12,000 | DN 80 | 1,800×800×1,100 | 2,500 |
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10,000–60,000 | 30–200 | 1–2 | 0.5–10 | 0.2–3 | 250 | 90 | <15,000 | DN 100 | 2,200×950×1,300 | 4,500 |
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20,000–120,000 | 20–150 | 1–2 | 0.5–10 | 0.2–5 | 450 | 90 | <15,000 | DN 150 | 2,800×1,100×1,600 | 8,500 |
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