Abstract
For the synthesis of bio-dimethyl ether (DME) from woody biomass via gasification, we have developed and promoted the biomass-to-liquid (BTL) process. This process consisted of oxygen-enrichment gasification of woody biomass by a bench-scale fixed-bed gasifier, wet gas cleaning, gas compression, desulfurization, removal of CO2, DME synthesis reaction by a fixed-bed reactor. The composition obtained at gasification step was as follows: 25.6 vol% of H2, 31.2 vol% of CO, 2.7 vol% of CH4, 0.4 vol% of CO2, 40.1 vol% of N2, 2S, and 2O3 catalyst for dehydration. It was found that the Cu-Zn and γ-Al2O3 catalysts exhibited higher activity when used as mixed powder form than used as separated pellet form. DME concentration 5.2 vol% in the product gas was obtained under the following conditions: 0.98 MPa, 230 °C, W/F=37.9 cat.-kg h/m3. It was possible to recover the almost all DME in the gas phase by using the activated carbon trap with dry ice. Finally, we succeeded in the continuous synthesis of DME over 200 h and recovery of approximately 120 g of liquefied bio-DME.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
