Effects of particle size and additives on the formation of fine particulate matter during sludge incineration

Li, Rundong; Man, Jiaqi; Fang, Zhenquan; Li, Yanlong; Liu, Feifei; Zhao, Yu

doi:10.1080/15567036.2020.1834028

Cited by 2 publications

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inorganic binders offer advantages such as low cost, high strength, and environmental friendliness, making them attractive alternatives to traditional binders. Common inorganic binders include clay, cement, gypsum, and calcium-based binders. − Compared to other inorganic binders, calcium-based binders exhibit superior performance in binding strength and sulfur fixation. This makes them more suitable for the production of formed coke with desirable characteristics, such as high fixed carbon content, low moisture content, and reduced pollutant emissions, which is a crucial advantage in addressing the environmental concerns associated with the burning of carbonaceous materials, as sulfur emissions contribute to air pollution and acid rain.…”

Section: Introductionmentioning

confidence: 99%

Clean Preparation of Formed Coke from Semi-coke by the Carbonated Consolidation Process

Guo

Zhu

et al. 2023

ACS Omega

View full text Add to dashboard Cite

In order to address the low thermal efficiency of low-rank coal combustion and the accompanying serious environmental issues, formed coke was prepared using a carbonization consolidation method with low-rank coal semi-coke. The test for briquetting and carbonation consolidation conditions revealed that the optimal parameters were a briquetting pressure of 93.63 MPa, moisture content of 16%, Ca(OH)2 binder amount of 10%, and a CO2 concentration of 30% at 20 °C. Under these conditions and a carbonation consolidation time of 60 min, high-quality formed coke was produced, exhibiting a compressive strength of 1256.2 N/a, redrying strength of 286.2 N/a, and a dropping strength of 10.6 number/a. The combustion characteristics of the prepared formed coke were investigated, revealing that ignition temperatures (345.39 °C), burnout temperatures (495.57 °C), and peak of the maximum weight loss rate temperatures (437.93 °C) are slightly higher than those of bituminous coal. The low calorific value of the briquette was 20.4 MJ/kg. During the combustion process, the emission concentrations of SO2, NO X , and solid particles from the formed coke were significantly lower than those of bituminous coal, indicating that it is a cleaner energy source. Moreover, adding Ca(OH)2 effectively reduced SO2 emissions and achieved sulfur fixation and emission reduction.

show abstract

Section: Introductionmentioning

confidence: 99%