Effect of removal of alkali and alkaline earth metals in cornstalk on slagging/fouling and co-combustion characteristics of cornstalk/coal blends for biomass applications

Zhu, Hongqing; Liao, Qi; Hu, Lifen; Xie, Linhao; Qu, Baolin; Gao, Rongxiang

doi:10.1016/j.renene.2023.03.022

Cited by 24 publications

(1 citation statement)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The combustion characterization parameters allow in-depth investigation of the combustion characteristics of the samples, as shown in Table 3, including the ignition temperature T e , the maximum weight loss rate T DTGmax , the average combustion rate V mean , the ammability index C, and the integrated combustion characterization index S. The ignition temperature T i was determined by the TG-DTG method [32,33].…”

Section: Parameters Of Combustion Characteristicsmentioning

confidence: 99%

Study on the co-combustion behavior of rice straw with coal gangue and fixation of alkali metals and ash melting characteristics

Jia,

Zhang,

Yun

et al. 2024

Preprint

View full text Add to dashboard Cite

Because it is clean, low carbon, and renewable, biomass offers the greatest practical value. Nevertheless, during combustion, issues like slagging, agglomeration, and corrosion can occur due to the high concentration of Cl and alkali metals (K and Na), which lowers combustion efficiency. On the other hand, gangue (CG), when combined with biomass as an additive, can successfully prevent slagging during the burning process. However, more research is needed to determine how CG affects the properties of ash melting, alkali metal immobilization, and biomass combustion behavior. Thus, the impacts of CG on the co-combustion behavior, fugitive forms of alkali metals, and ash melting properties of rice straw (RS) were examined in this article. X-ray diffraction analysis, scanning electron microscopy, thermogravimetric-differential thermal analysis, ash melting temperature test, and tube furnace combustion studies were among the experimental techniques utilized to characterize the ash. The findings demonstrated that adding CG to biomass might enhance both the overall combustion performance and the flammability index, with notable synergistic effects connected to the ratio of biomass to CG. Alkali metals in the ash could be efficiently fixed by CG, and it was found that adding 20% of CG to the biomass had the best results. The degree of ash melt slagging was successfully reduced and controlled with a rise in the CG addition ratio, and silica-aluminate with a higher melting point and stable nature was produced, which could effectively raise the biomass's ash melting temperature.

show abstract

Section: Parameters Of Combustion Characteristicsmentioning

confidence: 99%