Journal article
Thermodynamic analysis of small-scale dimethyl ether (DME) and methanol plants based on the efficient two-stage gasifier
Thermal Energy, Department of Mechanical Engineering, Technical University of Denmark1
Department of Mechanical Engineering, Technical University of Denmark2
Biomass Gasification, Biosystems Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Biosystems Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Risø National Laboratory for Sustainable Energy, Technical University of Denmark5
Models of dimethyl ether (DME) and methanol synthesis plants have been designed by combining the features of the simulation tools DNA and Aspen Plus. The plants produce DME or methanol by catalytic conversion of a syngas generated by gasification of woody biomass. Electricity is co-produced in the plants by a gas engine utilizing the unconverted syngas.
A two-stage gasifier with a cold gas efficiency of 93% is used, but because of the design of this type of gasifier, the plants have to be of small-scale (5 MWth biomass input). The plant models show energy efficiencies from biomass to DME/methanol + electricity of 51–58% (LHV), which shows to be 6-8%-points lower than efficiencies achievable on large-scale plants based on torrefied biomass pellets.
By using waste heat from the plants for district heating, the total energy efficiencies become 87–88%.
| Language: | English |
|---|---|
| Year: | 2011 |
| Pages: | 5805-5814 |
| ISSN: | 18736785 and 03605442 |
| Types: | Journal article |
| DOI: | 10.1016/j.energy.2011.08.047 |
| ORCIDs: | Clausen, Lasse Røngaard , Elmegaard, Brian , Ahrenfeldt, Jesper and Henriksen, Ulrik Birk |
SDG 7 - Affordable and Clean Energy Termisk forgasning af biomasse Thermal gasification of biomass
Biorefinery DME Dimethyl ether Methanol Syngas Two-stage gasifier
