Double Embossed Pillow Plate MVR Evaporation System
Laser-welded double-embossed pillow plates paired with MVR (Mechanical Vapor Recompression) deliver a compact, energy-efficient evaporation body with wide channels, high turbulence, and excellent cleanability. Ideal for food, chemical, and environmental duties requiring low-ΔT vacuum boiling, stable throughput, and low OPEX.
Key Benefits
- High thermal performance: Double embossing promotes turbulence, boosting heat-transfer coefficients at low ΔT.
- Energy savings: MVR recycles latent heat, minimizing fresh steam after start-up.
- Fouling tolerance: Wide pillow-plate channels handle viscosity/particulates better than narrow-gap plates.
- Hygienic & serviceable: SS304/SS316L surfaces, drainable geometry, CIP-ready; quick access for inspection.
- Modular scaling: Add/remove plate banks to match evaporation load; TVR/hybrid options available.
Process & Thermal Economy
Secondary vapor is mechanically compressed to raise saturation temperature and reused as the heating medium. Uniform distribution forms a thin film over double-embossed plates under vacuum, maintaining high coefficients and protecting heat-sensitive products while reducing specific energy consumption.
Materials & Construction
SS304/SS316L pillow plates and manifolds (duplex/Ti/Hastelloy optional). Orbital-welded headers, sanitary finishes, slope-to-drain piping, and validated CIP recipes; documentation available for food-grade/HACCP programs.
Process Overview — Double-Embossed Pillow Plate MVR
- Feed conditioning: screening/filtration, pH/antiscalant trim to limit Ca/Mg/Si scaling.
- Falling-film duty: double-embossed plates ensure even wetting and stable ΔT/LMTD.
- MVR compression: VFD-driven compressor sets discharge pressure for capacity/ΔT control.
- Condensate polishing: filters/RO/AC as needed for reuse or compliant discharge.
- Concentrate routing: to crystallizer/centrifuge/dryer or recycle per flowsheet/ZLD.
Key Components
- Double-embossed pillow plate evaporator stack with distributors/collectors
- MVR mechanical vapor compressor (turbo/Roots) with VFD
- Vapor–liquid separator, surface condenser, vacuum/NCG handling skid
- Preheaters/heat-recovery HX; PLC/HMI/SCADA with historian
- CIP skid; antiscalant dosing; T/P/flow/conductivity/level instrumentation
Performance & Sizing
| Parameter | Typical Range* |
| Operation | Continuous, vacuum duty |
| Electric use (MVR) | ~15–40 kWh per ton of water evaporated (duty/CR dependent) |
| Film ΔT | Low for quality preservation; set via compressor discharge pressure |
| Steam demand | Very low after start-up (backup/ancillary only) |
| Materials | SS304 / SS316L; duplex/Ti/Hastelloy optional |
*Performance depends on feed chemistry/viscosity, fouling tendency, compression ratio, and plate geometry.
FAQ
Why double-embossed vs. single-embossed plates?
Double embossing increases turbulence and structural stiffness, improving coefficients and pressure tolerance at low ΔT.
When choose pillow plate over shell-and-tube?
Pillow plates offer compact area density and wide channels—ideal for hygienic or moderate-fouling services with low energy targets.
Can the system be expanded later?
Yes—add plate banks or integrate TVR/MVR hybrid modules to increase capacity and reduce specific energy use.
Application
