Clean Energy Utilisation from Biogas and Biomass Gasification

来自生物质气化的生物气和生物合成气形式的气态可再生生物能源由于可变的燃料性质和相应的可变的燃烧性能而在其利用中面临主要问题。沼气中CH 4浓度的巨大变化导致强烈的燃料可变性效应。对于作为生物质气化产物的更清洁的生物合成气，燃料可变性的问题同样重要。对于可变燃料混合物，存在对燃烧效率/稳定性以及污染物排放的关注。为了应对这一挑战，需要充分了解沼气和生物合成气燃烧的基本物理和化学过程。该项目以基础研究为基础，旨在通过综合建模和实验研究，全面了解燃料可变性这一重要问题。该研究具有学术、环境、社会以及潜在的经济影响。兰开斯特大学和谢菲尔德大学的这一联合项目旨在开发沼气和生物合成气燃烧的现实和预测物理化学模型，以及燃烧和排放特性与燃料成分之间的映射，以利用可再生气体燃料的清洁能源。基于严格的建模和实验，该项目将全面了解沼气和生物合成气的利用，突出可变成分的影响。该项目旨在更好地了解生物能源利用的复杂物理化学过程，这可以推动生物能源技术的部署。该项目由四个相互关联的工作包组成：（1）WP 1：化学动力学机制的开发，其中将开发和优化沼气和生物合成气燃烧的一系列动力学机制;（2）WP 2：生物气和生物合成气燃烧的大涡模拟，其中将使用先进的湍流燃烧模型进行燃料可变性影响的参数研究;（3）WP 3：生物气和生物合成气燃烧的实验，其中将系统地进行先进的燃烧诊断;以及（4）WP 4：验证、整合和优化，其中将制定关于利用不同成分的沼气和生物合成气的指导方针。

Gaseous renewable bioenergy sources, in the form of biogas and bio-syngas from biomass gasification, are facing a major issue in their utilisation because of the variable fuel properties and accordingly variable combustion performance. The vast change in CH4 concentration of biogas leads to strong fuel variability effects. For the cleaner bio-syngas, which is the gasification product of biomass, the issue of fuel variability is equally important. With variable fuel mixtures, there are concerns over the combustion efficiency/stability as well as the pollutant emissions. To deal with this challenge, a good understanding of the underlying physical and chemical processes of the combustion of biogas and bio-syngas is required. Based on fundamental research, this project is intended to obtain a thorough understanding on the important issue of fuel variability through integrated modelling and experimentation studies. The research has academic, environmental, social, as well as potential economic impacts.This joint project between the Universities of Lancaster and Sheffield aims to develop realistic and predictive physicochemical models for biogas and bio-syngas combustion and mappings between the combustion and emission characteristics and the fuel compositions for clean energy utilisation from renewable gaseous fuels. Based on rigorous modelling and experimentation, the project will deliver a thorough understanding of the utilisation of biogas and bio-syngas, highlighting the effects of variable composition. The project is intended to provide a better understanding of the complex physicochemical processes of bioenergy utilisation, which can advance bioenergy technology towards deployment.The project is composed of four inter-connected work packages: (1) WP1: development of chemical kinetic mechanisms, where a range of kinetic mechanisms for biogas and bio-syngas combustion will be developed and optimised; (2) WP2: large-eddy simulation of biogas and bio-syngas combustion, where parametric studies of fuel variability effects will be performed using advanced turbulent combustion models; (3) WP3: experimentation of biogas and bio-syngas combustion, where advanced combustion diagnostics will be systematically carried out; and (4) WP4: validation, integration and optimisation, where guidelines on the utilisation of biogas and bio-syngas with different compositions will be drawn.