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100t/a-Scale demonstration of direct dimethyl ether synthesis from corncob-derived syngas

Author

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  • Li, Yuping
  • Wang, Tiejun
  • Yin, Xiuli
  • Wu, Chuangzhi
  • Ma, Longlong
  • Li, Haibin
  • Lv, Yongxing
  • Sun, Li

Abstract

Direct conversion of biomass-derived syngas (bio-syngas) to dimethyl ether (DME) at pilot-scale (100t/a) was carried out via pyrolysis/gasification of corncob. The yield rate of raw bio-syngas was 40–45Nm3/h with less than 20mg/Nm3 of tar content when the feedrate of dried corncob was 45–50kg/h. After absorption of O2, S, Cl by a series of absorbers and partial removal of CO2 by the pressure-swing adsorption (PSA) unit sequentially, the obtained bio-syngas (H2/CO≈1) was directly synthesized to DME over Cu/Zn/Al/HZSM-5 catalyst in the fixed-bed tubular reactor. CO conversion and DME space-time yield (STY) were 67.7% and 281.2kg/mcat3/h respectively at 260°C, 4.3MPa and 3000h−1(GHSV, syngas hourly space velocity). Synthesis performance would be increased if the tail gas (H2/CO>2) was recycled to the reactor when GHSV was 650–3000h−1.

Suggested Citation

  • Li, Yuping & Wang, Tiejun & Yin, Xiuli & Wu, Chuangzhi & Ma, Longlong & Li, Haibin & Lv, Yongxing & Sun, Li, 2010. "100t/a-Scale demonstration of direct dimethyl ether synthesis from corncob-derived syngas," Renewable Energy, Elsevier, vol. 35(3), pages 583-587.
    • Handle: RePEc:eee:renene:v:35:y:2010:i:3:p:583-587
    DOI: 10.1016/j.renene.2009.08.002
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    References listed on IDEAS

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    1. Hamelinck, Carlo N & Faaij, Andre P.C., 2006. "Outlook for advanced biofuels," Energy Policy, Elsevier, vol. 34(17), pages 3268-3283, November.
    2. Faaij, Andre P.C., 2006. "Bio-energy in Europe: changing technology choices," Energy Policy, Elsevier, vol. 34(3), pages 322-342, February.
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    1. Zuo, Hongmei & Mao, Dongsen & Guo, Xiaoming & Yu, Jun, 2018. "Highly efficient synthesis of dimethyl ether directly from biomass-derived gas over Li-modified Cu-ZnO-Al2O3/HZSM-5 hybrid catalyst," Renewable Energy, Elsevier, vol. 116(PA), pages 38-47.
    2. Tsita, Katerina G. & Pilavachi, Petros A., 2013. "Evaluation of next generation biomass derived fuels for the transport sector," Energy Policy, Elsevier, vol. 62(C), pages 443-455.

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