Rectification Systems

Superior neutral alcohol quality.

Rectification units for premium alcohol quality

Rectification is used in alcohol production for the purification of raw alcohol obtained from mash distillation.

With a carefully considered selection of process parameter it plays the key role in tailoring the alcohol quality as required for neutral and extra neutral alcohol (ENA).


We have the technology and experience to design rectification units for a wide range of applications and product specifications including

  • Chemical composition of all fractions,
  • Permanganate clearing time, and
  • Organoleptic characteristics

Our plants are individually tailored to comply with pharmacopoeia or producer specifications and with national and international ethyl alcohol standards such as EN, GOST, JAAS and many others.

2 DR neutral alcohol
Measures for high quality alcohol production

For superior product quality, our process schemes are optimized for separation of impurities and avoidance of undesired chemical reactions.

Starting out from a mild distillation in a vacuum mash column, undesired substances such as aldehydes and esters are removed in the heads column. The alcohol is further concentrated in the rectification column and fractions like propanol and higher alcohols are stripped off. In the repurification column methanol is removed.

2 dr almagest
Comprehensive approach

We look at every aspect of plant performance: quality, yield, costs. Specific design features include

  • Fully continuous operation
  • Distillation in vacuum
  • Low scaling tendency
  • Use of latent heat for thermal integration
  • Pre-heating of mash with raw alcohol vapors (= no loss of heat in evaporation)
  • Highly efficient column tray and internal designs
2 rectification trays
Supply of rectification equipment

In addition to our engineering services we supply equipment ranging from trays - as a process-critical component - to complete rectification facilities set up on EPC basis.

Showcase projects for rectification systems

Neutral Alcohol Plant in Verinsko
ALMAGEST - Verinsko, Ihtiman, Bulgaria

Almagest opted for Vogelbusch in 2009 to produce top quality extra neutral alcohol with the highest purity and organoleptic demands, to be used in the production of alcoholic beverages. The excellent alcohol quality convinced Almagest to commission Vogelbusch again in 2011 to expand the plant capacity to 80,000 liters per...

4 Reppe0
Neutral Alcohol Distillation in Lidköping
LANTMÄNNEN REPPE - Lidköping, Sweden

Renowned starch manufacturer Lantmännen Reppe is one of the largest Swedish alcohol distillers too. The MultiPressure distillation unit in Lidköping, commissioned in 2010, can produce some 50,000 liters of high quality alcohol that add to the company's beverage alcohol supply. The alcohol production is based on wheat starch. The distillation was...

Neutral Alcohol Plant in Ahwaz

The plant now operated by Razi (formerly Sugar Cane By-Products Corporation) was designed for a daily capacity of 110,000 liters of high quality pharmaceutical alcohol from cane molasses complying with EU standards. A special challenge was designing the plant for the extreme climatic conditions (0°C to 50°C) and the highest...

Neutral Alcohol Plant in Harbin
HARBIN WINERY - Harbin District, PR China

The fine alcohol plant of Harbin Winery, a Chinese producer of potable alcohol from corn, was upgraded by Vogelbusch in several steps. The client required specifically high alcohol quality in terms of organoleptic and analytical criteria and in particular with regard to methanol separation. The facility was designed to set...

4 leopoldov
Extra Neutral Alcohol D|R in Leopoldov

The plant in Leopoldov produces extra neutral alcohol for the company's well established range of beverage brands. 30,000 liters of high quality alcohol are distilled per day from alcoholic mashes from molasses and grain. Vogelbusch designed the distillation and rectification unit and supplied key equipment for the plant, which was commissioned in...


FEW - International Fuel Ethanol Workshop & Expo

June 12 - 14, 2023 | Omaha, U.S.