Key Laboratory of Advanced Coal and Coking Technology of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, People's Republic of China; Sino-Steel Anshan Thermo-Energy Research Institute, Anshan 114044, People's Republic of China.
Key Laboratory of Advanced Coal and Coking Technology of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.
Bioresour Technol. 2016 May;207:276-84. doi: 10.1016/j.biortech.2016.02.031. Epub 2016 Feb 10.
Oxy-fuel combustion of solid fuels is seen as one of the key technologies for carbon capture to reduce greenhouse gas emissions. The combustion characteristics of lignite coal, Chlorella vulgaris microalgae, and their blends under O2/N2 and O2/CO2 conditions were studied using a Thermogravimetric Analyzer-Mass Spectroscopy (TG-MS). During co-combustion of blends, three distinct peaks were observed and were attributed to C. vulgaris volatiles combustion, combustion of lignite, and combustion of microalgae char. Activation energy during combustion was calculated using iso-conventional method. Increasing the microalgae content in the blend resulted in an increase in activation energy for the blends combustion. The emissions of S- and N-species during blend fuel combustion were also investigated. The addition of microalgae to lignite during air combustion resulted in lower CO2, CO, and NO2 yields but enhanced NO, COS, and SO2 formation. During oxy-fuel co-combustion, the addition of microalgae to lignite enhanced the formation of gaseous species.
富氧燃烧是一种捕获碳以减少温室气体排放的关键技术。利用热重分析仪-质谱联用仪（TG-MS）研究了褐煤、普通小球藻微藻及其混合物在 O2/N2 和 O2/CO2 条件下的燃烧特性。在混合物的共燃烧过程中观察到三个明显的峰，归因于普通小球藻挥发物的燃烧、褐煤的燃烧和微藻焦的燃烧。采用等转化率法计算燃烧过程中的活化能。增加混合物中微藻的含量会增加混合物燃烧的活化能。还研究了混合物燃料燃烧过程中 S 和 N 种的排放。在空气燃烧过程中向褐煤中添加微藻会降低 CO2、CO 和 NO2 的产率，但会增强 NO、COS 和 SO2 的形成。在富氧共燃烧过程中，向褐煤中添加微藻会促进气态物质的形成。
