Thermodynamic Analysis of Biomass Gasification Using Aspen Plus: Comparison of Stoichiometric and Non-Stoichiometric Models

被引：45

作者：

Pilar Gonzalez-Vazquez, Maria ^{[1
]}

Rubiera, Fernando ^{[1
]}

Pevida, Covadonga ^{[1
]}

Pio, Daniel T. ^{[2
,3
]}

Tarelho, Luis A. C. ^{[2
,3
]}

机构：

[1] CSIC, INCAR, Inst Ciencia & Tecnol Carbono, Francisco Pintado Fe 26, Oviedo 33011, Spain

[2] Univ Aveiro, Dept Environm & Planning, Campus Univ Santiago, P-3810193 Aveiro, Portugal

[3] Univ Aveiro, Ctr Environm & Marine Studies CESAM, Campus Univ Santiago, P-3810193 Aveiro, Portugal

来源：

ENERGIES | 2021年 / 14卷 / 01期

关键词：

biomass; air-steam gasification; bubbling fluidised bed; Aspen Plus; sensitivity analysis; HYDROGEN-PRODUCTION; STEAM GASIFICATION; SYNGAS PRODUCTION; SIMULATION; PERFORMANCE; PREDICTION; GASIFIER; ENERGY; COAL; VALIDATION;

D O I：

10.3390/en14010189

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：

The gasification process involves several reactions that occur simultaneously and are interrelated by several independent variables. Simulation tools can help us to understand the process behaviour and predict the efficiency and final composition of the products. In this work, two thermodynamic equilibrium models developed in Aspen Plus(R) software were assessed: a non-stoichiometric model based on the feedstock composition and on the most probable compounds expected from the results of the gasification process using minimisation of Gibbs free energy and a stoichiometric model based on a set of chemical reactions considered as the most relevant to describe the gasification process. Both models were validated with experimental data from a bubbling fluidised bed semi-pilot scale gasifier using pine kernel shells (PKS) as feedstock. The influence of temperature, stoichiometric ratio (SR) and steam to biomass ratio (SBR) were analysed. Overall, predictions of the gas composition and gasification efficiency parameters by the stoichiometric model showed better agreement to the experimental results. Our results point out the significance of an accurate description of the equilibrium composition of producer gas with the stoichiometric model for the gasification of biomass.

引用

页数：17

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