Heat recovery from thermal processes and re-use of secondary energy within and across process units allow a more effective use of primary energy. Besides resource conservation, successful solutions consider the investment costs and the available infrastructure too.
Vogelbusch takes a variety of approaches to thermal integration. Configurations of our proprietary systems are selected in each particular case, according to the properties of the raw materials used, the planned investment costs and local energy costs.
Process optimization of this sort cuts operating costs and improves the greenhouse gas performance of the plant.
Vogelbusch ethanol plants achieve exceptional energy efficiency with proprietary systems such as multipressure distillation coupled with direct feed to the molecular sieves for dehydration, and a multi-effect evaporation, driven by waste heat.
The evaporator can run on waste heat from distillation or DDGS dryer, while the condensation from the dehydrated alcohol vapur in a molecular sieve can provide the heat for mash preheating. With thermal integration of rectification and dehydration, using latent heat of feed vapors, there is virtually no steam demand for the dehydration unit (illustration).
Further reduction of energy consumption is obtained by returning still wash, condensates and lutter water to the process so as to re-use heat and water.
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...
The bioethanol plant of Lantmännen Agroetanol AB utilises process technology licensed by Vogelbusch for distillation and dehydration. The proprietary Multipressure system considerably reduces the steam consumption compared to traditional distillation systems and optimum thermal integration further improves the energy-saving properties of the plant. The facility, which is Agroetanol’s second production...