Energy analyses for the energetically self-sufficient supercritical water oxidation process

One of the bottle-neck problems to the commercial development of supercritlcal water oxidation （SCWO） is high operation cost. In this study the condition to realize an energetically self-sufficient SCWO process is analyzed. The reaction heat is recovered by means of Organic Rankine Circle. The process of SCWO for phenol is simulated with the Aspen Plus~ process simulator, and the results show that the influence of temperature on reaction heat is small at a constant pressure. It is reasonable to neglect the effect of temperature and to estimate the heat of reaction with average temperature when the temperature changes in a small range. The necessary condition to realize an energetically self-sufficient SCWO process is that the released energy is not less than consumed one. Whether a waste system with given chemical composition is energeticallyself-sufficient can be estimated by ^QR^QH 〉 W The thermodynamics analysis shows that energetically self-sufficient SCWO process with an Organic Rankine Cycle is a feasible technology for the recovery of SCWO reaction heat,and the energy balance point for phenol is 2wt%.

影响超临界水氧化技术工业化的原因及对策

超临界水氧化(SCWO)技术是处理难降解、有毒有机废物的一种新型绿色、高效技术。近年来该研究领域十分活跃,但工业化进展缓慢。基于上述现状,本文在介绍SCWO基本原理的基础上,着重分析研究了该技术目前存在的技术难题,探讨了影响其工业化的主要原因及可能的对策。

检测AKBR和Ⅳ─C在肝癌患者手术治疗中的应用研究

目的探讨测定动脉血酮体比（AKBR）和血清四型胶原（Ⅳ—C）在肝癌患者手术及预后评估中的意义。方法在手术前后对20例行部分肝切除的原发性肝癌患者连续测定AKBR和血清Ⅳ—C并与术后并发症发生情况做对比。结果按术后AK－BR分成三组，A组（10例）；始终≥0．7；B组（7例）；波动在0．4和0．7之间；C组（3例）：降在0．4之下。各组并发症发生率依次为20％，42．9％，和100％。按术后Ⅳ—C分为两组：＜00μg／L的Ⅰ组中A，B，C各有8例（72.7％），3例（27.3％）和0例；≥200μg／L的Ⅱ组中A，B，C各有2例（22．2％），4例（44．4％）和3例（33．3％）。两组构成比间有显著性差异（P＜0．05）。结论：术后连续测定AKBR和Ⅳ—C有助于判断患者肝功能储备，指导治疗和评价预后。

ITER条件下高能量粒子对一种新型离散阿尔芬本征模的影响

离散阿尔芬本征模是托克马克中存在的一种模式,它具有准边缘不稳定性,能被高能量粒子激发成不稳定模式.国际热核实验反应堆(International Thermonuclear Experimental Reactor,ITER)的设计运行有感应方案、稳态方案和混合方案,文中将在稳态方案下结合电流驱动方式来探讨αTAE的不稳定性.本文主要介绍ITER实验设计运行条件,并据此探究ITER中的αTAE(α-induced toroidal Alfvén eigenmode,α是表示等离子体压强梯度大小的一个参数)及其由高能量粒子激发的不稳定性,结果表明在ITER中能够存在这种αTAE,且能够被高能量粒子激发成为不稳定模式.