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USA Lab
4" Falling Film Evaporator - 25 Liters per hour
$12,000.00 - $39,999.00
In stockPrice varies by Option.
A 4″ falling film evaporator for continuous ethanol recovery, rated 12 to 25 L/hr (3.2 to 6.6 GPH). Solvent evaporation efficiency trades against rate: 98% at 12 L/hr, 95% at 14, 90% at 18 and 85% at 25 L/hr. Feed is spread as a thin film down a jacketed heated body under vacuum with VFD-controlled feed rate. Three configurations are listed: Standalone (evaporator body and frame), Pump Integration (adds a 60 L/hr crude feed pump, a 75-100 L/hr solvent recovery pump and a 21 CFM two-stage vacuum pump) and Turnkey (adds a CLC-50/40 chiller and CRH-50L heater).
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Description
Engineered for high-throughput ethanol recovery, the 4" Falling Film Evaporator delivers rapid evaporation with minimal thermal degradation. A controlled thin film flows over heated surfaces for maximum heat transfer, efficient solvent removal, and consistent product quality across botanical, pharmaceutical, and chemical workflows.
With vacuum-assisted operation, metered injection, and precise heat-exchanger control, operators can tune temperature and feed rates for their crude characteristics and target viscosity. Choose from Standalone , Pump Integration , or a complete Turnkey package with matched chiller/heater for ready-to-run performance.
Note: Unit is designed for ethanol.
4" Evaporator Body High Throughput (LPH/GPH) Vacuum-Assisted Recovery Turnkey Packages
Thin-Film Efficiency: Uniform falling film maximizes heat transfer and minimizes thermal degradation.
C1D1 Pumping Options: Crude feed (60 L/hr) and solvent recovery (75–100 L/hr) for continuous duty.
24/7-Ready Design: Jacketed body, VFD flow control, corrosion-resistant vacuum path, and steady uptime.
User Manual / SOP P&ID / Flow Diagram Fluid Jacket Adapters (Not Included)
Why this 4" falling film evaporator?
Optimized ethanol recovery — fast solvent removal from ethanol-diluted crude under controlled vacuum.
Package tiers — Standalone (body/frame), Pump Integration (adds crude/solvent/vacuum pumps), or Turnkey (adds matched chiller & heater).
C1D1 readiness — explosion-proof pump options with leak-free continuous operation.
Precision control — VFD-driven feed, tuned heat exchangers, and metered injection for consistent film thickness.
Built for uptime — jacketed design, 24/7 duty rating, and corrosion-resistant vacuum components.
Technical Specifications
Solvent
Unit Type
4" FFE
Ethanol
Throughput (LPH)
12
14
18
25
Heater
Throughput (GPH)
3.2
3.7
4.7
6.6
CRH-30L
Solvent Evaporation Efficiency
98%
95%
90%
85%
Chiller
Model
CLC-50/40
Featured Equipment
Crude Oil Pump – 60L/HR – C1D1 Certified
Crude feed transfer into evaporator; continuous-duty rated.
Solvent Recovery Pump – 75L-100L/HR – C1D1 Certified
Vacuum-side recovery for ethanol; leak-free continuous operation.
UL Listed 21CFM UVP-21 Corrosion Resistant 2-Stage Vacuum Pump
Corrosion-resistant design supports stable boiling and film.
-40ºC 50L Closed Loop Recirculating Chiller CLC-50/40 30L/Min
Matched process chiller for condenser/utility loads.
CRH Closed Loop Heaters – 300°C – 6 kW, 9 kW, 18 kW, 27 kW & 36 kW
Turnkey pairing commonly uses CRH-30L/50L variants.
FFE-4 Options — Items
Standalone
Pump Integration
Turnkey
4" Falling Film Evaporator
X
X
X
Crude Pump
X
X
Solvent Pump
X
X
Vacuum Pump
X
X
CLC-5040 Chiller
X
CRH-50L Heater
X
FAQ
What distinguishes a falling film evaporator from other designs?
A thin, gravity-driven film flows down heated surfaces, delivering high heat-transfer coefficients and faster solvent removal with less thermal stress.
What throughput can the 4" FFE achieve?
Typical ethanol recovery rates are 12/14/18/25 LPH (≈ 3.2/3.7/4.7/6.6 GPH ), depending on feed temp, viscosity, vacuum, and utility sizing.
Which pumps are included with each package?
Standalone: evaporator body/frame. Pump Integration: adds crude feed, solvent recovery, and vacuum pumps. Turnkey: adds matched heater/chiller for immediate operation.
Are the pumps C1D1 certified?
Yes. The crude feed pump (60 L/hr) and solvent recovery pump (75–100 L/hr) are available with C1D1 explosion-proof motors for hazardous locations.
Do I need additional adapters or utilities?
Fluid Jacket Adapters are not included. Ensure proper electrical service, heater/chiller capacity, and ventilation. Our team can help with pairing and site readiness.
Frequently asked questions
What throughput can the 4" unit achieve on ethanol?+
12, 14, 18 or 25 L/hr (approximately 3.2, 3.7, 4.7 and 6.6 GPH). Solvent evaporation efficiency falls across that range - 98% at 12 L/hr, 95% at 14 L/hr, 90% at 18 L/hr and 85% at 25 L/hr. Actual rates depend on feed temperature, viscosity, vacuum level and the capacity of the heater and chiller serving the unit.
Which pumps come with each configuration?+
Standalone is the evaporator body and frame only. Pump Integration adds the crude feed pump, the solvent recovery pump and the vacuum pump. Turnkey adds the CLC-50/40 chiller and CRH-50L heater on top of the Pump Integration scope.
Are the process pumps rated for a hazardous location?+
The crude feed pump (60 L/hr) and the solvent recovery pump (75-100 L/hr) are available with C1D1 explosion-proof motors. The vacuum pump specified with the package is a UL listed 21 CFM corrosion-resistant two-stage unit (UVP-21). Whether your installation requires a Class I Division 1 rating is determined by your own area classification, not by the equipment listing.
Is the unit suitable for solvents other than ethanol?+
The unit is specified for ethanol. Throughput and efficiency figures published for it are ethanol figures and do not transfer to other solvents.
What is not included?+
Fluid jacket adapters are not included. Electrical service, heater and chiller capacity and room ventilation are site items that need to be sized before installation.
Related products
6" Falling Film Evaporator - 60l/hr
A 6-inch falling film evaporator listed at 60 L/hr for continuous solvent recovery, offered as Standalone, Pump Integration or Turnkey. Falling-film geometry spreads feed as a thin film down a heated body under vacuum, stripping solvent at a lower bulk temperature and shorter residence time than a batch still. Standalone is the column and frame, Pump Integration adds the process pumps, and Turnkey adds matched heating and cooling utilities. Pump models and a full packing list are not documented in the source data for this listing.
6" Dual Sided Falling Film Evaporator -150L/hr - HYDRA
Two mirrored 6″ falling film evaporator columns on a single mobile frame, rated 79 to 158 L/hr on ethanol (20.8 to 41.6 GPH). Solvent evaporation efficiency runs 98% at 79 L/hr down to 85% at 158 L/hr. The turnkey scope includes a C1D1 crude feed pump at 60 L/hr and a C1D1 solvent recovery pump at 150 L/hr, with a CRH-300L heater and a 5x5H multi-stage chiller as the specified utility pairing. Jacketed lines, integrated cold traps and right-angle glassware keep tubing runs short in a compact footprint.
