CAJ | 학술논문

搜集并统计了世界129种典型煤种、城市污水污泥及污泥/煤混烧灰样的灰成分及灰熔融特征温度等相关数据,研究灰中酸性成分 SiO 2、Al2 O3、TiO2和 P2 O5对灰熔融特性的影响。结果表明,Al2 O3是决定灰熔点的主要因素,酸性金属氧化物SiO 2、Al2 O3和 TiO2形成的耐熔矿物质石英、偏高岭石、莫来石、金红石等可提高灰熔点。非金属氧化物 P2 O5与污泥和污泥/煤的灰熔点 FT 二次拟合很好且明显降低熔点,污泥灰中 P2 O5含量显著高于煤灰是导致其熔点明显低于煤的重要原因。
수집병통계료세계129충전형매충、성시오수오니급오니/매혼소회양적회성분급회용융특정온도등상관수거,연구회중산성성분 SiO 2、Al2 O3、TiO2화 P2 O5대회용융특성적영향。결과표명,Al2 O3시결정회용점적주요인소,산성금속양화물SiO 2、Al2 O3화 TiO2형성적내용광물질석영、편고령석、막래석、금홍석등가제고회용점。비금속양화물 P2 O5여오니화오니/매적회용점 FT 이차의합흔호차명현강저용점,오니회중 P2 O5함량현저고우매회시도치기용점명현저우매적중요원인。
Ash fusion characteristic parameters of 129 typical original ash samples were collected locally andabroad , which included coals, sewage sludge and blends of sewage sludge / coal. These data were used to study the effect of acidic oxides including SiO 2 , Al2 O3 , TiO2 and P2 O5 on ash fusion temperatures ( AFTs). The refractory minerals such as quartz, metakaolin, mullite and rutile formed by SiO2 , Al2 O3 and TiO2 improve the AFTs. The results show that Al 2 O 3 is a main factor in determining AFTs. Furthermore, the non-metal oxides P 2 O 5 has a significant correlation with the FT of sewage sludge and sewage sludge / coal blends and its increase can obviously reduce AFTs, which might be caused by the higher P2 O5 content in sewage sludge.