Supercritical water oxidation of coal: Investigation of operating parameters' effects,reaction kinetics and mechanism
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Supercritical water oxidation of coal: Investigation of operating parameters' effects,reaction kinetics and mechanism
- 发表刊物：
- Fuel Processing Technology
- 摘要：
- Coal is a dominant source of energy, especially in China, which is one of the countries with the biggest reserve of coal in the world. At present, a major utilization of coal is direct combustion, which can release various pollutants. If those pollutants are discharged to environment without any effective treatment, it may threaten people's health and ecological balance. SCWO as an innovative technology has been investigated worldwide. When water temperature and pressure reach its critical point (TC≥374.15 °C, PC≥22.1 MPa), it acts as a nonpolar solvent with high diffusivity and excellent transport properties [1]. Consequently, even nonpolar organic compounds and gases like oxygen become completely miscible with supercritical water (SCW). The phase interface between the organic compounds and oxidants disappears, and organics could be destroyed in extremely short reaction time. During the SCWO process, the hydrocarbons react with the oxidant in a single-phase reaction to produce CO2 and H2O completely [2]. The hetero-atoms, such as chlorine, sulfur, or phosphorus present in organic wastes, are transformed into the mineral acids HCl, H2SO4, or H3PO4 respectively [3,4]. Organic nitrogen predominately forms N2 and small amounts of N2O [5,6]. Compared with traditional oxidation methods, SCWO is a clean and effective way for coal utilization.
- 合写作者：
- Shuzhong Wang*, Yang Guo, Liang Wang, Yuzhen Wang, Donghai Xu, Honghe Ma
- 是否译文：
- 否
- 发表时间：
- 2010-10-13