Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Design and operation of integrated pilot-scale dimethyl ether synthesis system via pyrolysis/gasification of corncob | |
Li, Yuping1 ; Wang, Tiejun1; Yin, Xiuli1; Wu, Chuangzhi1; Ma, Longlong1; Li, Haibin1; Sun, Li2
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| 2009-11-01 | |
| Source Publication | FUEL
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| ISSN | 0016-2361 |
| Volume | 88Issue:11Pages:2181-2187 |
| Corresponding Author | liyp@ms.giec.ac.cn ; wangtj@ms.giec.ac.cn |
| Abstract | The integrated pilot-scale dimethyl ether (DME) synthesis system from corncob was demonstrated for modernizing utilization of biomass residues. The raw bio-syngas was obtained by the pyrolyzer/gasifier at the yield rate of 40-45 Nm(3)/h. The content of tar in the raw bio-syngas was decreased to less than 20 mg/Nm(3) by high temperature gasification of the pyrolysates under O(2)-rich air. More than 70% CO(2) in the raw bio-syngas was removed by pressure-swing adsorption unit (PSA). The bio-syngas (H(2)/CO approximate to 1) was catalytically converted to DME in the fixed-bed tubular reactor directly over Cu/Zn/Al/HZSM-5 catalysts. CO conversion and space-time yield of DME were in the range of 82.0-73.6% and 124.3-203.8 kg/m(cat)(3)/h, respectively, with a similar DME selectivity when gas hourly space velocity (GHSV, volumetric flow rate of syngas at STP divided by the volume of catalyst) increased from 650 h(-1) to 1500 h(-1) at 260 degrees C and 4.3 MPa. And the selectivity to methanol and C(2)(+) products was less than 0.65% under typical synthesis condition. The thermal energy conversion efficiency was ca. 32.0% and about 16.4% carbon in dried corncob was essentially converted to DME with the production cost of ca. (sic) 3737/ton DME. Cu (111) was assumed to be the active phase for DME synthesis, confirmed by X-ray diffraction (XRD) characterization. (C) 2009 Elsevier Ltd. All rights reserved. |
| Subtype | Article |
| Other Abstract | The integrated pilot-scale dimethyl ether (DME) synthesis system from corncob was demonstrated for modernizing utilization of biomass residues. The raw bio-syngas was obtained by the pyrolyzer/gasifier at the yield rate of 40-45 Nm(3)/h. The content of tar in the raw bio-syngas was decreased to less than 20 mg/Nm(3) by high temperature gasification of the pyrolysates under O-2-rich air. More than 70% CO2 in the raw bio-syngas was removed by pressure-swing adsorption unit (PSA). The bio-syngas (H-2/CO approximate to 1) was catalytically converted to DME in the fixed-bed tubular reactor directly over Cu/Zn/Al/HZSM-5 catalysts. CO conversion and space-time yield of DME were in the range of 82.0-73.6% and 124.3-203.8 kg/m(cat)(3)/h, respectively, with a similar DME selectivity when gas hourly space velocity (GHSV, volumetric flow rate of syngas at STP divided by the volume of catalyst) increased from 650 h(-1) to 1500 h(-1) at 260 degrees C and 4.3 MPa. And the selectivity to methanol and C-2(+) products was less than 0.65% under typical synthesis condition. The thermal energy conversion efficiency was ca. 32.0% and about 16.4% carbon in dried corncob was essentially converted to DME with the production cost of ca. (sic) 3737/ton DME. Cu (111) was assumed to be the active phase for DME synthesis, confirmed by X-ray diffraction (XRD) characterization. |
| Keyword | Pilot-scale Dimethyl Ether (Dme) Bio-syngas Synthesis |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/j.fuel.2009.05.022 |
| WOS Subject Extended | Energy & Fuels ; Engineering |
| URL | 查看原文 |
| WOS Keyword | BIOMASS ; METHANOL ; CATALYSTS ; BIOFUELS ; SYNGAS ; FUEL ; GAS |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | MOST of China [2007CB210207]; National Nature Science Foundation of China ; National 863 Plan [2007AA05Z416] |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000268914900016 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/3306 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 1.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Shandong Acad Sci, Energy Res Inst, Jinan 250014, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Yuping,Wang, Tiejun,Yin, Xiuli,et al. Design and operation of integrated pilot-scale dimethyl ether synthesis system via pyrolysis/gasification of corncob[J]. FUEL,2009,88(11):2181-2187. |
| APA | Li, Yuping.,Wang, Tiejun.,Yin, Xiuli.,Wu, Chuangzhi.,Ma, Longlong.,...&Sun, Li.(2009).Design and operation of integrated pilot-scale dimethyl ether synthesis system via pyrolysis/gasification of corncob.FUEL,88(11),2181-2187. |
| MLA | Li, Yuping,et al."Design and operation of integrated pilot-scale dimethyl ether synthesis system via pyrolysis/gasification of corncob".FUEL 88.11(2009):2181-2187. |
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