Ethanol Crystallizer MVR SS316L Single Effect Falling Film Evaporator

Engineer-to-order single-effect falling film evaporator in SS316L, integrated with MVR (Mechanical Vapor Recompression) and an ethanol crystallizer section for solvent recovery, concentration, and controlled crystallization (API/fine chemicals/bioproducts). Vacuum operation and recompressed vapor duty provide low temperature, high efficiency, and consistent crystal quality.

• Energy efficient: MVR recycles latent heat; minimal fresh steam after start-up.
• Crystal control: Tight supersaturation and residence-time management for narrow particle size.
• Product protection: Low ΔT falling-film duty preserves thermally sensitive actives.
• Clean & compliant: SS316L contact surfaces, drainable layouts, CIP-ready; solvent safety options.
• Solvent economy: High-purity ethanol condensate suitable for reuse after polishing.

Secondary vapor is mechanically compressed to elevate saturation temperature and reused as the heating medium. Falling-film operation maintains uniform film temperature and high heat-transfer coefficients, limiting degradation and fouling while stabilizing supersaturation for crystallization downstream.

Wetted parts in SS316L (Duplex/Ti/Hastelloy on request). Solvent-service options: explosion protection (ATEX/NFPA concepts), nitrogen blanketing, solvent-rated seals, LEL monitoring, and conductive gaskets/hoses.

• Feed conditioning: filtration/degassing; pH or seed addition if required.
• Single-effect MVR evaporation (vacuum): compressor discharge sets ΔT; shell pressure defines boiling point.
• Crystallizer: controlled cooling/evaporation; seed loading for PSD tuning and habit control.
• Solid-liquid separation: centrifuge/filter; mother liquor recycle or recovery.
• Condensate handling: polishing (AC/ion exchange) for ethanol reuse; VOC management as required.

• Falling-film evaporator (single effect) with vapor-liquid separator
• MVR mechanical vapor compressor (turbo/Roots) with VFD
• Crystallizer (DTB/OSLO or FC with cooling coil/HX), seed/feed systems
• Condenser, vacuum/NCG handling, solvent-rated piping and valves
• PLC/HMI/SCADA; instruments (T/P/flow/cond/level/VOC/LEL); CIP skid

Can one system both concentrate and crystallize?
Yes--falling-film MVR provides gentle concentration; the downstream crystallizer finalizes PSD and purity.

How is solvent safety addressed?
Options include nitrogen inerting, LEL/VOC monitoring, conductive components, and explosion-protection design per code.

What about ethanol recovery quality?
Condensate polishing (e.g., carbon/IX) delivers high-purity ethanol suitable for reuse, reducing make-up solvent cost.