What is a spinning cone column and which premium NA brands use it?
What is a spinning cone column and which premium NA brands use it?
A spinning cone column (SCC) is a tower containing alternating fixed and rotating stainless steel cones that create a thin-film evaporation environment at temperatures below 40°C under vacuum. The system makes two passes: the first strips the volatile aromatic fraction (captured separately), and the second removes the alcohol. The aromatics are then recombined with the dealcoholized base.
The SCC was developed by CSIRO (Commonwealth Scientific and Industrial Research Organisation) in Australia in the late 1980s and commercialised by Flavourtech, which remains the primary manufacturer. The rotating cones inside the column spin at 350–500 RPM, spreading the liquid feed into a very thin film (0.1mm) over the cone surface, dramatically increasing the surface area for evaporation. Combined with vacuum (reducing pressure to 50–200 mbar) and counter-current steam, this allows volatile aromatic compounds to evaporate at temperatures that would be impossible in conventional atmospheric distillation.
The two-pass design is the critical innovation. In Pass 1, steam at a low rate strips only the volatile aromatics while leaving most of the alcohol in the liquid, these volatile compounds (terpenes, esters, sulphur compounds) are condensed and stored separately. In Pass 2, a higher steam rate removes the alcohol. The dealcoholized base is then recombined with the captured aromatics. Because the aromatics were never subjected to the alcohol-stripping conditions of Pass 2, they retain their fresh character. This is why SCC-processed wines often smell dramatically more like their alcoholic originals than vacuum-distilled equivalents.
Premium brands known to use SCC or equivalent low-temperature technology include Leitz Eins Zwei Zero (Germany), Thomson & Scott Noughty (UK), Edenvale (Australia), and several Californian and South African NA wine producers. The system is expensive, full production lines cost €300,000–€1.5M, which is why smaller producers typically contract to specialist dealcoholization facilities rather than owning their own systems.
The spinning cone column has also found application in non-alcoholic spirit botanical concentration, distinct from its primary use in wine and beer dealcoholisation. By running the SCC in concentration mode rather than dealcoholisation mode, a dilute botanical aqueous extract can be gently concentrated 3 to 5-fold while recovering the volatile aroma fraction separately. The concentrated extract and the aroma fraction are then recombined at a higher Brix to create a stable botanical concentrate suitable for cold storage and on-demand dilution at the blending stage. This approach, used by several UK premium NA spirit producers, avoids the freeze concentration technique that can produce a crystalline texture affecting sensory quality, and provides cleaner aroma recovery than falling film evaporation at conventional temperatures.
The spinning cone column process parameters are precisely controlled by automated PLC systems that monitor and adjust rotor speed, steam injection rate, vacuum level, condenser temperature and product flow rate in real time. The control objective is to maintain the product temperature in the cone zone within plus or minus 1 degree C of the target (typically 35 to 42 degrees C depending on the product type), as temperature excursions cause disproportionate increases in thermally labile compound losses. Modern SCC installations achieve temperature uniformity of plus or minus 0.5 degrees C across the full cone stack height due to steam distribution optimisation, as specified in Flavourtech installation documentation for EU food-grade systems delivered since 2021.
Life-cycle analysis of spinning cone column versus reverse osmosis dealcoholisation shows that environmental impact per litre of dealcoholised product is roughly comparable when energy source mix is held constant. SCC uses steam heating (typically from natural gas or biomass boilers) while RO uses electrical energy. At the current European electricity grid mix (approximately 30% renewable), RO achieves lower greenhouse gas emissions per litre processed than steam-based SCC. However, breweries and wineries with on-site biogas generation (from spent grain, marc or wastewater treatment) can supply the SCC steam at near-zero carbon cost, substantially closing this gap. The Net Zero pathway for dealcoholisation in European beverage production therefore involves matching the energy source to the dealcoholisation technology: renewable electricity for RO, biogas steam for SCC.
The commercial case for SCC investment in NA wine is strengthened by the growing regulatory permission to label SCC-dealcoholised wines with their original appellation of origin under EU Regulation 2117/2021. For an appellation-producing winery, the brand equity of the origin designation applied to a NA wine product is commercially significant and commands a higher retail price than generic dealcoholised wine. Wineries in Bordeaux, Burgundy, Mosel and Rioja have been among the early adopters of SCC-based dealcoholisation specifically because it preserves the varietal character that justifies the appellation premium price positioning in the emerging NA premium wine segment.
| SCC Pass | What's extracted | Why |
|---|---|---|
| Pass 1 (low steam rate) | Volatile aromatics (esters, terpenes, sulphur compounds) | Captures fragile aromatics before alcohol removal damages them |
| Pass 2 (high steam rate) | Ethanol and remaining volatiles | Removes alcohol from the now-aroma-stripped base |
| Recombination | Pass 1 fraction + dealcoholized base | Restores aroma to a now alcohol-free liquid |
The zeroproof.one dealcoholized wine guide identifies SCC-processed wines on the Belgian and European market — the single most reliable quality signal in the NA wine category.