超临界水氧化布雷顿封闭循环系统反应热模拟计算

Computational simulation of reaction heat in supercritical water oxidation process with closed Brayton cycle system

超临界水氧化技术(SCWO)主要应用于低浓度有机废水的研究。文中在超临界热力条件下对超临界水氧化过程进行模拟,力求实现能量的自补偿过程。通过应用Aspen P lus模拟软件建立模型对SCWO过程进行模拟,采用布雷顿封闭循环(CBC)系统来实现SCWO的能量自补偿过程。计算结果表明:SCWO能量自补偿过程损失的能量要远小于产生的能量(QR-QH>p),超临界水氧化CBC系统的能量自补偿过程是可以实现的,此过程环己烷的能量平衡点为2.4%。

Supercritical water oxidation （SCWO） is mainly applied in the study of low concentration organic waste water. The process of SCWO was simulated under the supercritical thermodynamic condition so as to make the SCWO process self-compensation from the viewpoint of energy. The process of SCWO was modeled through the Aspen Plus process simulator and SCWO energy self-compensation process was realized by closed Brayton cycle （CBC）. The results show that the energy loss in the SCWO energy self-compensation process is far less than the energy release （QR -QH 〉P）, and the energy self-compensation process of supercritical water oxidation with CBC is realizable, and the energy balance point for n-hexane is 2.4% in such process.