Convert biogas to methanol or/and DME
2015
Johansson, A.-C., ETC (Sweden) | Hanarp, P., Volvo, Gothenburg (Sweden) | Persson, P.-O., Hushållningssällskapet (Sweden)
The aim with this report is to make a short and general literature survey in order to present available technologies and identify their possibilities and most important challenges for further consideration of this biogas upgrading route. A number of different processes for the production of methanol and DME from biogas/natural gas have been developed, which are covered in this report. Among these processes, only a few focus on small scale production. However, the small scale processes are under development and some of them are predicted to be commercialized in the near future. According to Oberon fuels the efficiency of their process from biogas to DME is about 55%, which means that a small scale production of biogas of 6-15 GWh would produce 3-8 GWh/year DME. However, the costs and energy consumption for this type of process are not known. Another producer of small scale plants is Gas Technology, which process, compared to the others, is not based on catalytic synthesis. They claim that their process is cheaper compared to the others but on the other side the efficiency is probably lower. To be able to produce and use DME in small scale on the farm the following is needed, required that the technology is commercialized and cost efficient: studies on how the fuel works in tractors; production of new tractors with modified engine; solutions to be able to distribute DME locally on the farm and externally; and solutions to take care of excess energy in shape of electricity and heat etc.
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