NDLI: Optimization of the Three-stage Biomass Gasification Characteristics in High-temperature Entrained-flow Bed

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Optimization of the Three-stage Biomass Gasification Characteristics in High-temperature Entrained-flow Bed

Content Provider	Semantic Scholar
Author	Chao, Chen Yu, Chunjiang Zhou, Jinsong Xiang, Yangyang Luo, Zhongyang
Copyright Year	2014
Abstract	The raw material requirements for the indirect liquefaction of biomass are strict. In particular, the ratio of H2/CO must be greater than or equal to 1. However, traditional biomass gasification has problems that include a low H2/CO ratio and low carbon conversion rates. This study proposes a three-stage gasification optimization model in which pyrolysis products are separated before being put through a second gasification step. The optimized model simulation used MATLAB software and the experiments were carried out in a biomass, high-temperature entrained-flow bed. The results demonstrate that, compared to traditional mixing gasification, three-stage gasification can effectively increase the H2 content in syngas. The H2 content can reach 42.3%, which is 4.6% higher than in traditional gasification. Additionally, this process can increase the H2/CO ratio to 1.23, which is 43% higher than the ratio 0.86 in traditional gasification. This also could provide raw materials for the indirect liquefaction of syngas. Thus, three-stage gasification can eliminate the need for intermediate steps such as steam reforming and adding external H2. Experiments indicated that the best gasification conditions were a first gasification time of 0.6s and a gasification temperature of 1100 °C, under which the H2/CO ratio reached a maximum of 1.2.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://bioresources.cnr.ncsu.edu//BioRes_09/BioRes_09_2_2621_b_Chao_ZXLW_Optimization_3-stage_Biomass_Gasification_5154.pdf
Language	English
Access Restriction	Open
Subject Keyword	Biomass Experiment H2 Database Engine MATLAB Mathematical optimization RLN2 gene Requirement Simulation
Content Type	Text
Resource Type	Article

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