Multilateral approaches for investigation of particle stickiness of coal ash at low temperature fouling conditions

Namkung, Hueon; Kim, Hyung-Taek; Wang, Fuchen; Lin, Kuangfei; Yu, Guangsuo

doi:10.1007/s11814-017-0217-8

Cited by 3 publications

(1 citation statement)

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“…Using these coal-based indices, the melting temperatures of the target samples in this study, namely sewage sludge, sawdust, and sewage sludge solid fuel ash, were predicted. First, using XRF and ash fusion temperature (AFT) data on coal ash by Guo et al [31] and Namkung et al [32], the correlation between the indices and the melting temperature was analysed, as illustrated in Figure 7. According to the analysis, the base/acid ratio demonstrates the highest correlation at an r 2 value of 0.7882, while the r 2 values of the remaining three indices are very low.…”

Section: Correlation Between Ash Melting Temperature and Melting Indicesmentioning

confidence: 99%

Combustion Melting Characterisation of Solid Fuel Obtained from Sewage Sludge

et al. 2021

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Solid fuelization technology can increase the heating value of sewage sludge such that it can be utilised as a fossil fuel substitutes. Reducing landfilling of bottom and fly ash resulting from heavy metals contained in sewage sludge is challenging. Hence, combustion melting technology (CMT), which can discharge bottom ash in the form of slag, has been proposed herein as an alternative to the conventional incineration technology. However, further research is required to improve the flowability of slag. Applicability of CMT for the stable treatment of heavy metals in the ash generated during the energisation of sewage sludge solid fuel has been reviewed. The change in the degree of fluidity was identified via a laboratory-scale fluidity measurement experiment following changes in melting temperature, mixing ratio of sewage sludge and sawdust, and basicity. The pouring index (PI) of sewage sludge solid fuel (pellet) was maintained at a level of about 60% at a basicity index of 0.8. Based on the results, the slagging rates and volume reduction rates, exhaust gas analysis, and heavy metal elution characteristics under oxygen enrichment were derived from a 2 ton/day combustion melting pilot plant experiment; thereafter, the feasibility of combustion melting of sewage sludge solid fuel was determined.

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Section: Correlation Between Ash Melting Temperature and Melting Indicesmentioning

confidence: 99%