Manufacturing high-performance formcoke from pulverized coal using potato residue-based biomass binders

Yan, Long; Liu, Qianqian; Dong, Hongsheng; Wang, Yufei; Li, Jian; Xiang, Zhou; Wang, Xianjie; Shi, Quan

doi:10.1016/j.mtsust.2022.100237

Cited by 2 publications

(2 citation statements)

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“…It has been estimated that approximately 60% of the annual output of semi-coke consumed by calcium carbide and ferrosilicon enterprises consists of semi-coke larger than 8 mm. However, the powder form of semi-coke smaller than 8 mm is yet to be effectively utilized, causing difficulties in storage and transportation for enterprises and significantly reducing their benefits . Therefore, the current utilization methods need to be revised effectively to address the issues of overcapacity and powder utilization in semi-coke.…”

Section: Introductionmentioning

confidence: 99%

“…However, the powder form of semi-coke smaller than 8 mm is yet to be effectively utilized, causing difficulties in storage and transportation for enterprises and significantly reducing their benefits. 7 Therefore, the current utilization methods need to be revised effectively to address the issues of overcapacity and powder utilization in semi-coke.…”

Section: Introductionmentioning

confidence: 99%

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

Guo

Zhu

et al. 2023

ACS Omega

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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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%