An Experimental and Numerical Investigation of Fluidized Bed Gasification of Solid Waste

Energies

Sharmina Begum²  Mohammad G. Rasul²  Delwar Akbar¹ 

[1] School of Business and Law, Central Queensland University, Rockhampton, QLD 4702, Australia; E-Mail:;School of Engineering and Technology, Central Queensland University, Rockhampton, QLD 4702, Australia; E-Mail:

关键词: gasification;    fluidised bed;    Aspen Plus;    syngas;   

DOI  :  10.3390/en7010043

来源: mdpi

【 摘 要 】

Gasification is a thermo-chemical process to convert carbon-based products such as biomass and coal into a gas mixture known as synthetic gas or syngas. Various types of gasification methods exist, and fluidized bed gasification is one of them which is considered more efficient than others as fuel is fluidized in oxygen, steam or air. This paper presents an experimental and numerical investigation of fluidized bed gasification of solid waste (SW) (wood). The experimental measurement of syngas composition was done using a pilot scale gasifier. A numerical model was developed using Advanced System for Process ENgineering (Aspen) Plus software. Several Aspen Plus reactor blocks were used along with user defined FORTRAN and Excel code. The model was validated with experimental results. The study found very similar performance between simulation and experimental results, with a maximum variation of 3%. The validated model was used to study the effect of air-fuel and steam-fuel ratio on syngas composition. The model will be useful to predict the various operating parameters of a pilot scale SW gasification plant, such as temperature, pressure, air-fuel ratio and steam-fuel ratio. Therefore, the model can assist researchers, professionals and industries to identify optimized conditions for SW gasification.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.