Investigation on biomass steam gasification in a dual fluidized bed reactor with the granular kinetic theory

Linbo Yan; Yang Cao; Hongzhiyuan Zhou; Boshu He

doi:10.1016/j.biortech.2018.08.099

Investigation on biomass steam gasification in a dual fluidized bed reactor with the granular kinetic theory

Bioresour Technol. 2018 Dec:269:384-392. doi: 10.1016/j.biortech.2018.08.099. Epub 2018 Aug 31.

Authors

Linbo Yan¹, Yang Cao², Hongzhiyuan Zhou², Boshu He³

Affiliations

¹ Institute of Combustion and Thermal Systems, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China. Electronic address: lbyan@bjtu.edu.cn.
² Institute of Combustion and Thermal Systems, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China.
³ Institute of Combustion and Thermal Systems, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China; Department of Mechanical and Electrical Engineering, Haibin College of Beijing Jiaotong University, Huanghua 061199, Hebei Province, China. Electronic address: hebs@bjtu.edu.cn.

PMID: 30205263
DOI: 10.1016/j.biortech.2018.08.099

Abstract

The dual fluidized bed (DFB) reactor is promising to convert biomass into high-quality syngas efficiently. In this work, a three-dimensional model is built based on the granular kinetic theory to predict the biomass steam gasification in dual fluidized bed reactors. The model is firstly validated against a series of experimental results. Then, the effects of some essential operation parameters including the biomass flow rate (F_b), the steam to fuel ratio (R_sf) and the gasification temperature (T_g) on the biomass steam gasification properties in a DFB reactor are comprehensively analyzed with the orthogonal method. In the concerned ranges of the operation parameters, the cold gas efficiency is found to be the most sensitive to F_b and least sensitive to T_g. The optimal cold gas efficiency of the DFB gasifier is 82.9% when F_b, R_sf and T_g are 15 kg/h, 1.5 and 900 °C, respectively, and the H₂ mole fraction is 46.62%.

Keywords: Biomass-steam gasification; Dual fluidized bed (DFB); Eulerian-Eulerian model; Granular kinetic theory.

MeSH terms

Biomass
Bioreactors*
Gases
Kinetics
Steam*

Substances

Gases
Steam