变频脉冲电磁装置在电厂循环水处理中的应用

变频脉冲电磁装置是物理水处理技术的最新一代产品,它不仅从根本上解决了防垢、除垢难题,而且在杀菌、灭藻、除锈和防腐蚀方面也具有较好的处理效果。     

美国国会“电磁脉冲攻击对美国的威胁评估委员会”及其评估报告简析

为评估美国面临的电磁脉冲攻击威胁，并为美国电网等国家关键基础设施遭受敌国电磁脉冲攻击提出预防、保护和修复的建议，监督指导政府部门和军方开展电磁脉冲防御工作，美国国会从2001财年至2018财年，先后组建了四届电磁脉冲攻击威胁评估委员会。截至目前，该委员会已发布三次评估报告，其评估结论与建议为美国政府部门、研究机构等，社会各界开展各类评估、应对方案、提案提供了重要参考和依据。历届电磁脉冲攻击威胁评估委员会的成立，在美国电磁脉冲防御工作发展过程中都具有重要意义。简述了历届委员会的情况、评估要点和结论，重点分析了最新公布的2016财年委员会评估报告要点。     

脉冲放电粒子荷电机理的研究

脉冲电晕放电在脉冲期间产生大量的高能电子，形成粒子在电场中的电子荷电．依据粒子附近的电子密度Ｂｏｌｔｚｍａｎ分布和电子在粒子表面传输的速率方程，在电子的动能大于或等于粒子表面势垒能的边界条件基础上得到粒子在脉冲电晕场中粒子荷电的速率方程，并利用龙格库塔法求解荷电速率方程得到粒子在脉冲放电条件下的荷电量．计算结果表明脉冲放电下的粒子荷电量平均是直流电晕放电的离子荷电量的１８倍，最大荷电量是０５—１５μｍ范围内的粒子，荷电量是直流电晕的２６倍．这一结果不仅与Ｄａｖｉｄ的粒子自由电子荷电理论结果相似，而且与微细粒子电子荷电量测试结果基本一致．     

In situ IR,pulse reaction and TPD-ITD study of catalytic performance of room-temperature carbon monoxide oxidation on supported gold catalysts

With in situ IR, two different CO adsorption bands were detected on various chemical state gold catalysts. One band is attributed to the linear CO on an oxidized gold catalyst(2100 cm i ), the other one is ascribed to the bridged CO on metallic gold (2085 cm- i ). CO pulse reaction showed that Au/Fe203 catalyst had a room-temperature activity even in the presence of moisture. The produced CO2 was detained and more easily desorbed from supported gold catalyst than support oxide. TPD-IDT results indicated that the 02- superoxide ions are the possible active oxygen species.     

脉冲电晕等离子体烟气脱硫脱硝中试装置

简要介绍了建造于四川绵阳科学城热电厂的烟气处理量为 12 0 0 0～ 2 0 0 0 0Nm3 h的脉冲电晕等离子体烟气脱硫脱硝中试装置。给出了装置的工艺流程和平面布置 ,对装置系统各单元作了技术性描述。试验表明 :当能耗低于 5Wh Nm3 ,SO2 和NOX 的脱除率分别达 85 %、5 0 %以上     

Effect of activated NH3 on SO2 removal by pulse coronadischarge plasma in flue gas

ＩｎｔｒｏｄｕｃｔｉｏｎＮｏｗＳＯ2 ｉｓｔｈｅｏｎｅｏｆｍａｉｎｇａｓｐｏｌｌｕｔａｎｔｓａｎｄｔｈｅｍａｉｎｃａｕｓｅｏｆａｃｉｄｒａｉｎｐｒｏｂｌｅｍ .ＳＯ2ｒｅｍｏｖａｌｂｙ ｐｕｌｓｅｃｏｒｏｎａｄｉｓｃｈａｒｇｅｉｓａｎｅｗＤｅ ＳＯ2 ｔｅｃｈｎｉｑｕｅｄｅｖｅｌｏｐｅｄｄｕｒｉｎｇｌａｓｔｔｅｎ ｙｅａｒｓ(Ｍａｓｕｄａ ,1 993;Ｍｉｚｕｎｏ ,1 986 ;Ｄｉｎｅｌｌｉ,1 990 ) .ＳＯ2 ｉｎｆｌｕｅｇａｓｉｓｏｘｉｄｉｚｅｄｂｙａｃｔｉｖａｔｅｄｒａｄｉｃａｌ(ｓｕｃｈａｓＯＨ ,ＨＯ2 ,ＮＨ2 ,Ｏ)ｗ…     

Electrochemical analysis of endosulfan using a C18-modified carbon-paste electrode

Successful applications of different analytical procedures to determine quantitatively endosulfan and its metabolites in aqueous media can be found in recent literature. Fundamentally, they have made use of solid-phase extraction (SPE) and gas (GC) or liquid chromatography (LC), sometimes coupled to mass spectrometry (MS). In this paper, a new and alternative methodology to determine quantitatively endosulfan in aqueous media is reported. A C18-modified carbon-paste electrode has been used to determine voltammetrically endosulfan, despite its unfavourable electrochemical properties and behaviour. The methodology proposed is based on the decrease experienced by the peak intensity corresponding to voltammetric signals of Cu(II) when successive and constant additions of endosulfan are carried out. This decrease is directly proportional to the concentration of endosulfan what allows to perform an indirect quantification of the pesticide. The detection limit obtained is 40 ng l⁻¹, this value being under the limits specified by European norms and EPA reports.     

高压脉冲放电处理焦化废水的研究

焦化废水中含有大量的氰化物,如直接排放将对环境产生很大的危害,本实验采用高压毫微秒脉冲产生的非平衡等离子体处理武钢焦化废水,分析了空气流量、SO2的质量浓度、放电时间等因素对实验的影响,放电之后发现当实验条件合适时,氰化物浓度可以降低90%以上,反应60min时则降低了93.93%以上。文章同时还探讨了放电等离子体去除氰化物反应机理。     

大型脉冲布袋除尘器的设计

本文论述了我院与日本泉公司（亻－亻－株式会社）联合设计的大型脉冲除尘器的主要性能和特点，该除尘器过滤面积为５２００ｍ２，滤袋长度７ｍ，除尘器出口浓度为２０ｍｇ／Ｎｍ３（保证值），滤袋使用寿命为２年，主要技术指标处于国际领先水平。     

Modeling,downsizing, and performance comparison of a fuel cell hybrid mid-size car with FCEV for urban and hill road driving cycles

A fuel cell hybrid (FCH) mid-size car is modeled and simulated in Advanced Vehicle Simulator (ADVISOR), the results are compared with 2017 Toyota Mirai Fuel Cell Electric Vehicle (FCEV) to examine the capability of hybridization and compare the fuel economy of the modeled vehicle. The aim of this analysis is to understand the energy interactions of the fuel cell and batteries and to identify an optimal energy management. In the current modeling, the fuel cell power is downsized by 30% with a corresponding increase in the number of battery modules by 50% to compensate the fuel cell power by maintaining the same motor power demand. The Urban Dynamometer Driving Schedule (UDDS) and mountain driving cycle (NREL2VAIL) test cycles are considered to estimate the fuel economy for urban and hill road driving conditions. The FCH mid-size car achieves better performance in terms of acceleration and equivalent fuel economy in comparison with 2017 Toyota Mirai FCEV. The effectiveness of the optimal energy management of the hybrid FC/battery powertrain performance is better and validated with the 2017 Toyota Mirai FCEV.