Bioethanol Technology
16Pages

Introducing GEAWiegand Milling and Product Preparation 8 Liquefaction, Saccharification and Fermentation 9 Ethanol Dehydration and Purification 11 Stillage orVinasse Processing 12 Biomass to Energy Conversion 14 GEA Wiegand is a leading supplier of bioethanol process technology, providing the engineering, equipment and construction expertise for industrial scale plants. Our expertise covers the preparation and handling of raw materials to the dehydration of finished products and processing of the stillage and co-product streams. With an established track record and international reputation,...

International Orientation GEA Wiegand plants are to be found in many different areas of industry throughout the world. Systems are sold and supported through a global network of GEA Wiegand sales offices. Quality Our customers depend on the highest degree of precision and reliability. The GEA Wiegand organisation is certified according to the international standard DIN EN ISO 9001 and is authorized to build equipment in accordance with the German AD-Merkblatt HP0, the American Society of Mechanical Engineers (ASME U-STAMP) and in accordance with the latest European standards and pressure...

Research and Development 100 Years of Research and Development Our R&D laboratory represents a significant investment demonstrating GEA Wiegand’s market- and technological leading position. A complete fermentation pilot plant is available for the conversion of starch and sugar substrates into ethanol. State-of-the-art laboratory equipment is available for analytical purposes including gas chromatograph (GC) and highperformance liquid chromatograph (HPLC) machines. We investigate feedstocks, enzymes and yeasts, optimising yields and validating performance while providing the necessary data...

Manufacture tubesheets, provide high standards of quality and manufacturing efficiency. Our quality control unit is responsible for ensuring that equipment complies with the design and required quality standards. Non-destructive test procedures are carried out using X-ray and ultra sound testing, spectral analysis, dye penetration, surface cracking and hardness testing. GEA Wiegand – Milestones on the Road to Success 1908 Wilhelm Wiegand patents the multiple-effect circulation evaporator 1948 Wiegand Apparatebau GmbH re-established in Karlsruhe 1953 Introduction of the Wiegand falling film...

Bioethanol is an environmentally friendly fuel for vehicles that normally run on petrol. As a renewable source of energy it reduces demand on fossil fuels while it burns more cleanly and with reduced emissions of C02, a greenhouse gas. As an energy source, bioethanol is carbon neutral in that it reduces, by up to 70 %, the amount of greenhouse gas released into the atmosphere. The C02 released during ethanol produc- tion and combustion in an engine has already been absorbed from the atmosphere during the growth of the crops due to The reduction of greenhouse gases, to meet the climate...

manufacturer’s warranties. Flexible fuel vehicles that use E85, a Environmental concerns due to the widespread use of MTBE blend of 85 % ethanol and 15 % petrol, are in use in countries (methyl tertiary butyl ether, a possible carcinogen) in unleaded such as the USA and Sweden, while ethanol blends are used in petrol have prompted drives to seek alternatives. Bioethanol Brazil and in parts of Canada, amongst others. provides an ideal solution in that it is a renewable and environmentally friendly petrol extender, while providing a direct Bioethanol is produced by the fermentation of sugar,...

Milling and Product Preparation Expertise in the field of starch processing enables valuable components to be extracted from the grain. This fractionation offers the benefits of yielding valuable co-products, which otherwise do not contribute to the ethanol conversion process, and enhanced performance. In the case of gluten – a temperature sensitive protein – the distillation plant can be designed to operate more effectively at higher temperatures, thereby reducing investment and energy costs. Furthermore, the removal of bran and fibres from grain reduces the non-fermentable mass flow...

Liquefaction, Saccharification and Fermentation Advances in enzyme and yeast technologies enable new levels of performance in terms of viscosity reduction (e.g. xylanase and beta glucanase), conversion times, process temperatures and yields, allowing greater optimisation on equipment design and energy use. Commercially available enzyme packages permit liquefaction and starch hydrolysation using uncooked starch at low temperatures. GEA Wiegand’s expertise allows flexible plant designs that permit switching between processing methods, reducing dependency when market conditions are...

Distillation and Rectification removing as much water as possible from the ethanol to within a few percent of the azeotropic equilibrium. Since mash columns have to deal with the unfermented solids contained in the mash, their design is largely determined by the heat sensitivity and fouling characteristics of the type of mash being processed. Wheat and rye based mash is particularly temperature sensitive due to the denaturing of the residual proteins and amino acids that lead to fouling. In this case, GEA Wiegand uses vacuum distillation columns that operate at low temperatures to ensure...

Ethanol Dehydration and Purification properties of the zeolite and the polarity of the water vapour molecules. While the molecular sieve retains the water molecules, the larger ethanol molecules pass through the sieve bed and leave the system as dehydrated ethanol. GEA Wiegand supplies as standard three adsorption vessels, which operate in continuous batch mode. One unit works in adsorption mode, while the other is regenerated. The third vessel allows for smoothed switching between the active adsorbing unit and the one being regenerated, allowing a gentle treatment of the zeolite and...

Stillage or Vinasse Processing and transported to satisfy international demand from beef, dairy, pig and poultry feed markets. Decanting Decanting centrifuges mechanically dewater the spent grains carried in the stillage. Thin stillage, containing both dissolved and suspended solids, is produced as the centrate. Some of the thin stillage is recycled as backset to the fermentation process, where it reduces the pH of the mash and lowers the risk of infection, while providing nitrogen and nutrients that assist in the fermentation process. The remaining thin stillage, normally with a...