Ye Jumei, Li Zhuang, Li Chongcong, Li Tianya, Gao Ziqiao, Dong Hui
College of Petroleum Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, China.
School of Energy and Power Engineering, Dalian University of Technology, China.
Scanning. 2020 Dec 10;2020:6667497. doi: 10.1155/2020/6667497. eCollection 2020.
Slag is difficult to treat quantitatively due to the formation of a molten mixture in the carbonization process of high-salinity organic wastewater. Thus, aiming at solving this difficulty, the effects of metal oxide additives, additive ratio, furnace burden ratio, and carbonization temperature on the carbonization and coking of high-salinity organic wastewater are systematically analyzed. The analysis is performed using scanning electron microscopy, X-ray diffraction, and Vickers hardness tests. The results show that all five metal oxide additives can reduce the hardness of carbonized products. The relative effect of reducing the coked hardness is as follows: MgO > CaO > kaolin > FeO > AlO. Thus, the effect of MgO on reducing the coking hardness is stronger than that of the other four metal oxides, reducing the hardness of carbonized products by approximately 81%. Furthermore, the adding charge can reduce the hardness index by at least 60%. When the carbonization temperature is higher than 800°C, the hardness index of the carbonized product decreases by approximately 5% each 50°C of increase in temperature. This study shows that the addition of metal oxides can effectively reduce the hardness of coking during the treatment of high-salt organic wastewater by carbonization and oxidation and provide theoretical support for the subsequent treatment of high-salt organic wastewater by carbonization and oxidation.
由于高盐有机废水碳化过程中会形成熔融混合物，炉渣难以进行定量处理。因此，为了解决这一难题，系统分析了金属氧化物添加剂、添加剂比例、炉料比和碳化温度对高盐有机废水碳化和焦化的影响。采用扫描电子显微镜、X射线衍射和维氏硬度测试进行分析。结果表明，所有五种金属氧化物添加剂均可降低碳化产物的硬度。降低焦化硬度的相对效果如下：MgO＞CaO＞高岭土＞FeO＞AlO。因此，MgO降低焦化硬度的效果强于其他四种金属氧化物，使碳化产物的硬度降低了约81%。此外，添加料可使硬度指数至少降低60%。当碳化温度高于800℃时，碳化产物的硬度指数每升高50℃约降低5%。本研究表明，添加金属氧化物可有效降低高盐有机废水碳化氧化处理过程中的焦化硬度，为后续高盐有机废水碳化氧化处理提供理论支持。
