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论文类型：期刊论文

发表时间：2016-11-01

发表刊物：FUEL

收录刊物：Scopus、SCIE、EI

卷号：183

页面范围：132-138

ISSN号：0016-2361

关键字：Co-gasification; Fixed-bed; Coal; Biomass; Synergy

摘要：This study inspects the occurrence of synergy in the co-gasification of coal and biomass in a fixed bed reactor. Two separate and a pre-mixed bed configurations with a congruent sample mass are designed for comparative study. The intimate contact between bio-ash and coal char grains is a prerequisite for the occurrence of the synergy effect in the co-gasification of coal and biomass. The separate bed configurations generally form either a coal-char/bio-ash or a bio-ash/coal-ash interface, whereas the pre-mixed bed configuration produces well-dispersed bio-ashes that come into close contact with coal char grains. As a result, a stronger synergy effect occurs in the mixed bed configuration rather than in the separate configuration. A novel method is explored to collect and determine the heavy tar and water yields generated during the initial pyrolysis step. Results show that bio-char bed has better tar cracking performance than coal char bed. (C) 2016 Elsevier Ltd. All rights reserved.