Preparation and Characterization of the Glycerol-Embedded Hybrid Coal
DC Field | Value | Language |
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dc.contributor.author | Park, Ju-Hyoung | - |
dc.contributor.author | Lee, Dong-Wook | - |
dc.contributor.author | Lee, Young-Joo | - |
dc.contributor.author | Song, Gyu-Seob | - |
dc.contributor.author | Jin, Min-Ho | - |
dc.contributor.author | Park, Se-Joon | - |
dc.contributor.author | Namkung, Hueon | - |
dc.contributor.author | Bae, Jong-Soo | - |
dc.contributor.author | Kim, Joeng-Geun | - |
dc.contributor.author | Song, Kwang Ho | - |
dc.contributor.author | Choi, Jong Won | - |
dc.contributor.author | Choi, Young-Chan | - |
dc.date.accessioned | 2021-09-01T17:51:36Z | - |
dc.date.available | 2021-09-01T17:51:36Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-03-04 | - |
dc.identifier.issn | 2168-0485 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/67014 | - |
dc.description.abstract | The The molasses embedded hybrid coal (Hybrid Coal by Korea Institute of Energy Research; HCK) was previously proposed as an attractive alternative to low-rank coals that tend to show low calorific values and high CO2 emissions. HCK was synthesized by mixing molasses with a low-rank coal to enhance its heating value. Nevertheless, food ethics regarding molasses additives still have impeded its commercial acceptance. In this study, we propose a glycerol (nonfood)-based coal upgrading process to improve the combustion kinetics and heating value of hybrid coal in comparison to the previous HCK. The process involves drying at 105 degrees C followed by torrefaction process at 250 degrees C. During torrefaction, the glycerol additive starts to evaporate at about 180 degrees C and then is almost vaporized out to the coal surface. To avoid glycerol loss, we employ sulfuric acid as a torrefaction catalyst to suppress glycerol evaporation. In comparison to the molasses yield of 65% after torrefaction in the previous HCK synthesis process, glycerol-embedded torrefaction with sulfuric acid showed a 55% yield in mass. The glycerol embedded hybrid coal shows a homogeneous combustion peak regardless of the mixing ratios, leading to a 35% reduction of unburned carbon emissions, which is one of the particular matter sources of combustion flue gas. Furthermore, the proposed synthesis process increases the net caloric value to 80% and lowers the water uptake to 84%, even without a higher SO2 emission, in comparison with raw coal. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | LOW-RANK COAL | - |
dc.subject | COMBUSTION CHARACTERISTICS | - |
dc.subject | BEHAVIOR | - |
dc.subject | BIOMASS | - |
dc.subject | CARBON | - |
dc.subject | WATER | - |
dc.subject | CARBONIZATION | - |
dc.subject | CONVERSION | - |
dc.subject | PYROLYSIS | - |
dc.subject | CATALYSTS | - |
dc.title | Preparation and Characterization of the Glycerol-Embedded Hybrid Coal | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Song, Kwang Ho | - |
dc.identifier.doi | 10.1021/acssuschemeng.8b03818 | - |
dc.identifier.scopusid | 2-s2.0-85062422866 | - |
dc.identifier.wosid | 000460600500008 | - |
dc.identifier.bibliographicCitation | ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v.7, no.5, pp.4637 - 4646 | - |
dc.relation.isPartOf | ACS SUSTAINABLE CHEMISTRY & ENGINEERING | - |
dc.citation.title | ACS SUSTAINABLE CHEMISTRY & ENGINEERING | - |
dc.citation.volume | 7 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 4637 | - |
dc.citation.endPage | 4646 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Green & Sustainable Science & Technology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | LOW-RANK COAL | - |
dc.subject.keywordPlus | COMBUSTION CHARACTERISTICS | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | BIOMASS | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | CARBONIZATION | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | PYROLYSIS | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordAuthor | Glycerol | - |
dc.subject.keywordAuthor | Sulfuric acid | - |
dc.subject.keywordAuthor | Torrefaction | - |
dc.subject.keywordAuthor | Hybrid coal | - |
dc.subject.keywordAuthor | Coal upgrade | - |
dc.subject.keywordAuthor | Unburned carbon | - |
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