Projektering av en etanolfermenteringsanläggning i pilotskala med Biostilteknologi

Sammanfattning: Abstract This degree thesis was made in cooperation with Chematur Engineering in Karlskoga. Many of the environmental issues of today are a result of the motor traffic. Consumption of fossil fuels harms our environmental through formation of carbon dioxide and other greenhouse gases. To get under control with our environmental issues it’s important to find substitutes for oil that are both cheap and environmentally friendly. Ethanol has a long history as a motor fuel and is both enviromentally friendly has a high efficiency. According to the EU commissions directives for motor fuels, 5, 75 % of all the fuels in Sweden should be renewable in 2010. Ethanol is international the most widely used and imported renewable fuel. 70 millions litres of ethanol is manufactured in Sweden yearly and the majority comes from the factory in Norrköping owned by Lantmännen. In order to make the Swedish ethanol more competitive the import duty has been increased in 2007. The ethanol produced in Sweden mainly is made from wheat and grain, while the production in USA mainly is corn based. Ethanol can be manufactured by fermentation from all materials containing suger or some form of chemical composition that can be transformed into suger. The raw material used for ethanol production can be divided into three groups: suger, starch and cellulose. Biostil is a process developed in order to make ethanol production as cheap and environmentally friendly as possible. This method is used to manufacture both fuel and technichal ethanol. The raw material used is all kinds of starch containing material. Chematur Engineering has developed their own concept within biostil called BiostilÒ 2000. Biostil is a recycling concept that gives a high ethanol yield and lower water consumption. To be able to develop the biostil furher, Chematur Engineering aims to build a pilot plant on Kilsta industrial estate.