Pilot-scale tests of direct dimethyl ether synthesis from biomass-derived syngas

被引:0
作者
Li, Yuping [1 ]
Wang, Tiejun [1 ]
Yin, Xiuli [1 ]
Wu, Chuangzhi [1 ]
Ma, Longlong [1 ]
Li, Haibin [1 ]
Zhang, Xinghua [1 ]
Lv, Yongxing [1 ]
Li, Yuping [1 ]
机构
[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Nat Gas Hydrate, Guangzhou, Guangdong, Peoples R China
来源
2009 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC), VOLS 1-7 | 2009年
关键词
Pilot-scale; Synthesis; Dimethyl ether; Bio-syngas; METHANOL PRODUCTION; GAS;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Direct conversion of biomass-derived syngas to dimethyl ether(DME) at pilot-scale of 100t/a was carried out in a fixed-bed tubular reactor over Cu/Zn/Al/HZSM-5 catalyst. The bio-syngas was obtained by pyrolysis and gasification of corncob under O-2-rich air in fixed-bed reactors. The effects of gasification, synthesis temperature and gas hourly space velocity(GHSV) of bio-syngas on DME synthesis were investigated with the corncob feedrate of 45 similar to 50kg/h. The results shows that H-2/CO ratio of the obtained bio-syngas was around 1. CO conversion was 75.2% under optimized synthesis temperature of 270 degrees C and GHSV of 1200h(-1). CO conversion and space-time yield of DME were in the range of 82.0 similar to 67.7%, 124.3 similar to 281.2kg.m(cat)(-3).h(-1) respectively when GHSV was between 650h(-1) and 3000h(-1) under 4.3MPa and 260 degrees C. Cu (111) was considered to be the active phase for DME synthesis, confirmed by X-ray diffraction(XRD) characterization.
引用
收藏
页码:484 / 487
页数:4
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