Effect of biomass type on the performance of cogasification of low rank coal with biomass at relatively low temperatures

FUEL

卷:134

Article

Rizkiana, Jenny¹  Guan, Guoqing^1,2  Widayatno, Wahyu Bambang¹  Hao, Xiaogang³  Huang, Wei³  Tsutsumi, Atsushi⁴  Abudula, Abuliti^1,2 

[1] Hirosaki Univ, Grad Sch Sci & Technol, Hirosaki, Aomori 0368560, Japan

[2] Hirosaki Univ, NJRISE, Aomori 0300813, Japan

[3] Taiyuan Univ Technol, Sch Chem & Chem Engn, Taiyuan 030024, Peoples R China

[4] Univ Tokyo, Inst Ind Sci, Collaborat Res Ctr Energy Engn, Meguro Ku, Tokyo 1538505, Japan

关键词: Cogasification;    Low rank coal;    Biomass;    Synergy effect;    Alkali and alkaline earth metal;   

DOI  :  10.1016/j.fuel.2014.06.008

来源: Elsevier

【 摘 要 】

Cogasification of low rank coal with three kinds of biomass, i.e., Japanese cedar, rice straw, and seaweed, at relatively low temperatures were performed in a fixed bed downdraft reactor. The effect of different biomass addition on the coal gasification performance was investigated by comparing the experimental char and gas yields with the calculated prediction data. Effect of the blending ratio was also investigated. It was found that the mixing of coal with biomass revealed a synergy effect. Biomass promoted the coal gasification rate, but the extent of promoting effect was depended on the characteristics of biomass themselves. Alkali and alkaline earth metal (AAEM) content played an important role in this synergy effect. Seaweed which contained high AAEM content promoted the coal gasification significantly. Structure of coal was also found to have great effect on the cogasification performance. The results indicated that cogasification of coal with biomass is feasible at relatively low temperatures. (C) 2014 Elsevier Ltd. All rights reserved.

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