臭氧在循环冷却水中缓蚀作用的研究

循环冷却水处理是工业生产中的一个重要环节。臭氧作为单一的水质稳定剂在循环冷却水中具有缓蚀作用。研究结果表明：吸附在金属表面的臭氧使金属表面从活化腐蚀状态转变为钝化状态,使金属腐蚀电位由活化电位区跃变到钝化电位区,阻止金属的溶解;同时氧的传质速率加快,也可以降低由于浓差极化所产生的腐蚀作用;对于未经预膜处理的金属,臭氧改变金属表面状态,形成一层氧化钝化膜,从而起到了缓蚀作用。     

热电冷联供系统在海上平台的应用

文章介绍热电冷联供系统的设备组成及其设计注意事项;介绍以燃气轮机为发电机组的热电冷联供系统案例。在热电冷联供系统中配置溴化锂吸收式制冷机,可充分发挥其利用低品位能源的优势;设计热电冷联供系统前,应进行必要的经济性分析,合理确定设备配置方案和配置容量;以燃气轮机发电机组和烟气型溴化锂吸收式冷热水机组为主要设备组成的热电冷联供系统,烟气系统的设计和安装连接是关键。文章可为燃气轮机热电冷联供系统的设计和建造提供技术参考。     

双曲线自然通风冷却塔噪声治理设计

发电厂闭式循环冷却水系统是采用钢筋混凝土结构自然通风冷却塔,其噪声污染治理是一个难题。本文以攀钢电厂双曲线自然通风冷却塔为例,介绍其噪声特性、控制措施及治理效果。     

超细化学纤维填料用于净化含油循环冷却水研究

研究了一种高比表面积化学纤维填料对泄漏于工业循环冷却水中机油的循环吸附效果.讨论了填料静态饱和吸附量和循环饱和吸附量的差别;考察了水中分散(或乳化)油的初始浓度、运行温度及pH值变化的条件下填料对循环吸附量和循环吸附能力的影响;比较了吸附前后填料的表面水接触角变化.实验结果表明,填料的循环饱和吸附量约是静态饱和吸附量的...     

Adequate air volume in working face after mechanical refrigeration

By analyzing the coal mine working face ventilation and cooling cost after mechanical method is adopted for temperature decrease, the relationship between air volume and ventilation cooling cost was established. And through mathematical analysis and specific applications of the model, the reasonable air volume is determined. With respect to the actual conditions of a coal mine, the air volume is figured out. In order to verify the correctness of the air volume by the new method, the Ansys model of ventilation cooling for the working face is established, and the effect of cooling under the air volume is simulated. The simulation results can meet the mine cooling requirement after being applied in coal mine, the cooling effect and the economic benefit are satisfactory.     

Safety assessment for accident of cooling loop failure (ACLF) in lunar nuclear power reactor (LNPR)

The safety assessment of an accident in the lunar base power plant is investigated for the stability of the operation. The lunar surface reactor is modeled for this study. The accident of cooling loop failure (ACLF) is one of the important scenarios for the virtual case in the moon nuclear power plant (NPP). The newly designed lunar nuclear power reactor (LNPR) is suggested for the commercial purpose. The system dynamics (SD) is used for the simulation of the safety assessment. The cyclic variation of the lunar surface temperature can affect to the physical situation of the coolant, which is expressed by the time step. The result shows the performance possibility of the long term cooling increases slightly in the short period of the time step. The dynamical simulation of the lunar environment is performed for the conceptual design of the NPP.     

电催化氧化处理焦化废水静态实验研究

用电催化氧化处理焦化废水,研究了电压、电流密度、电解时间和电解质浓度对COD去除效果的影响,并通过多因素正交试验确定了该工艺最佳操作参数:电压为20 V,电流密度为94 mA/cm2,电解时间2.5 h,NaCl电解质质量浓度为1 g/L。结果表明,在此参数下出水COD水质指标稳定,并能达到国家《工业循环冷却水处理设计规范》(GB 50050—2007)标准。     

矿井高温高湿职业危害及其临界预防点确定

为预防矿井高温高湿热害对矿工身心健康造成不良影响,对矿井热源以及高温高湿环境导致的职业危害进行分析。选取等效温度(TET)和综合温度指标(TZ)作为热应力指标,调查研究矿井高温高湿环境造成的矿工疲劳问题和烦恼问题。提出在矿井特殊环境下导致矿工疲劳和烦恼的临界预防点—TET指标临界值和TZ指标临界值分别为28.48℃和26.14℃,并给出矿井临界深度745 m。结果表明:提出的临界预防值与国内外已经制定的标准有一定的一致性。矿井开采超过临界深度后,矿工疲劳、烦恼影响程度将随开采深度急剧增加。不同深度矿井应该采取不同的降温标准。     

Hydroxyl carboxylate based non-phosphorus corrosion inhibition process for reclaimed water pipeline and downstream recirculating cooling water system

A combined process was developed to inhibit the corrosion both in the pipeline of reclaimed water supplies (PRWS) and in downstream recirculating cooling water systems (RCWS) using the reclaimed water as makeup. Hydroxyl carboxylate-based corrosion inhibitors (e.g., gluconate, citrate, tartrate) and zinc sulfate heptahydrate, which provided Zn^2 + as a synergistic corrosion inhibition additive, were added prior to the PRWS when the phosphate (which could be utilized as a corrosion inhibitor) content in the reclaimed water was below 1.7 mg/L, and no additional corrosion inhibitors were required for the downstream RCWS. Satisfactory corrosion inhibition was achieved even if the RCWS was operated under the condition of high numbers of concentration cycles. The corrosion inhibition requirement was also met by the appropriate combination of PO₄^3 − and Zn^2 + when the phosphate content in the reclaimed water was more than 1.7 mg/L. The process integrated not only water reclamation and reuse, and the operation of a highly concentrated RCWS, but also the comprehensive utilization of phosphate in reclaimed water and the application of non-phosphorus corrosion inhibitors. The proposed process reduced the operating cost of the PRWS and the RCWS, and lowered the environmental hazard caused by the excessive discharge of phosphate. Furthermore, larger amounts of water resources could be conserved as a result.     

逆流式冷却塔噪声污染防治

该文介绍了逆流式冷却塔运行原理及噪声扰民治理的实例。并提出相应的措施。