Approach to the quality control of the cooling water in engines

详细论述了近年来发电机内冷水水质调控处理技术与工艺的进展与应用情况,并对各种方法进行了简要评价。这些方法主要有离子交换法、缓蚀剂法、碱化处理法、氧量控制法等。同时,对内冷水处理技术的发展动态作出展望与建议。The new methods of the quality control of the cooling water in engines in recent years are discussed in detail.These methods mainly include ion-exchange,anti-corrosion chemical,water basification,deoxidization.Besides,some suggestion for future research and technical application in engine cooling water treatment is given

Analysis of the seawater FGD process and characteristics in Songyu Thermal Power Plant

介绍了厦门嵩屿电厂4×300MW燃煤机组烟气海水脱硫系统所选用的工艺,分析了海水FGD系统的主要技术特点,为日益增多的同类型脱硫装置的工艺设计与设备选型提供一定的借鉴。The technical process applied on the flue gas seawater desulfurization project in 4×300MW units in Songyu Power Plant was introduced.Its main technical characteristics were analyzed.It provided reference for the process design and equipment choice of other similar FGD systems

The technology and character analysis for flue gas denitrification SCR system in Songyu Power Plant

介绍了厦门嵩屿电厂4×300MW燃煤机组烟气选择性催化还原法(SCR)脱硝工程所选用的工艺,分析了SCR脱硝系统的主要技术特点,为日益增多的同类型脱硝装置的工艺设计与设备选型提供一定的借鉴。The technology for flue gas denitrification by selective catalyst reduction(SCR) system in Songyu Power Plant with 4×300 MW coal fired units is introduced. The characteristics of the technology are also discussed, which provided the experiences for the process design and equipment choice in gradually popular similar SCR system

Anti-Corrosion for Flue Gas Sea-Water De-Sulfurization System of Songyu Power Plant

介绍了嵩屿电厂4×300 MW燃煤机组烟气海水脱硫的工艺流程;分析了脱硫设备(或构造物)的腐蚀机理;论述了嵩屿电厂采用的防腐措施。The technological process of gas sea-water de-sulfurization for 4×300 MW fossil units is introduced.The mechanism of corrosion of de-sulfurization facility(or structure) is analysed.The measures for anti-corrosion for Songyu power plant are addressed

Study on Species Transformation and Emission Characteristic for Mercury during Coal Combustion in Power Station with Sea Water Flue Gas De-Sulphurization

汞是一种剧毒、高挥发性、易在生物体内富集并导致病变的持久性环境污染物。由于原煤中含有汞，耗煤量巨大的燃煤电站成为环境中汞污染的最主要人为排放源。目前，燃煤电站汞排放特性及控制技术研究已成为各国研究的前沿及热点。 本文以燃煤过程产生的汞污染物为对象，以配有完整烟气净化装置的大型滨海电站燃煤锅炉烟气的排放流程为主线，研究燃煤过程汞的形态转化与排放特性，结合锅炉燃煤烟气净化工艺，讨论汞污染的控制技术。主要内容和结果如下： (1)论文研究了燃煤电站常用的烟煤中汞的含量，分析汞含量与煤种的相关性，发现煤中汞含量与硫含量具有较强的相关性。本研究采用小型管式炉进行燃煤排放烟气中汞的形态分布模拟实验。在6...Mercury has been identified as a persistent pollutant with characteristics of high toxicity, volatility, bioaccumulation and mutagenicity to human health and environment. Since the coal contains mercury, the coal-fired power plants have become the main source for anthropogenic discharge of mercury to the atmosphere. The emission features and the control of mercury exhausted from coal-fired power p...学位：工学博士院系专业：海洋与环境学院环境科学与工程系_环境工程学号：B20043401

Study on enrichment methods of polycyclic aromatic hydrocarbons in flue gas from coal combustion

介绍了燃煤电厂烟气中排放的多环芳烃污染物的富集方法,比较了各种富集技术的特点与使用情况,分析了多环芳烃富集过程中的质量控制与质量保证措施,并探讨了富集采样中的若干注意事项。This paper summarizes the enrichment methods of polycyclic aromatic hydrocarbons(PAHs) in flue gas from coal combustion.The article also introduces the measures of quality assure and quality control during enrichment sampling,Besides,the items that should be paid attention to are also discussed

ANTI-CORROSION TECHNOLOGY FOR FLUE GAS SEA-WATER DE-SULFURIZATION SYSTEM

以厦门嵩屿电厂4×300MW燃煤机组烟气海水脱硫系统的防腐蚀工程为例,探讨脱硫系统中防止海水与酸性烟气腐蚀的设备选材与防腐蚀工艺技术。Taking the flue gas sea water de-sulfurization(FGD) project of Songyu Power Plant with 4×300MW coal fired units as an example, the anti-corrosion technology for flue gas sea-water de-sulfurization system and the characters of the technology were introduced

Study on the Mercury Emission From Seawater for Coal-fired Flue Gas De-sulphurization During Aeration Process

作为湿法脱硫工艺的吸收剂,海水在去除烟气中SO2的过程中,也能吸收烟气中的二价汞,但在恢复水质的曝气过程中,已吸附在海水中的二价汞易释放出来。该文采用金丝捕汞法富集曝气池上空大气中的汞,同时采集曝气池海水水样,考察不同运行工况下脱硫海水中的汞向大气释放的浓度水平及变化趋势。结果表明:曝气池上空总气态汞(TOTAl gASEOuS MErCury,TgM)的浓度平均值为10.01ng/M3,高出当地背景值的20倍以上。曝气池上空TgM浓度与池中海水的汞浓度、曝气强度呈正相关性。TgM浓度在白昼时段高于夜间时段,并在中午日光照射较强的时段出现峰值,表明光致还原对曝气池海水中汞的释放起到了重要的促进作用。研究结果有利于评价海水脱硫工艺的环境风险及其对局部区域大气质量的影响。As the absorbent of wet flue gas desulphurization(FGD) technology,seawater can dissolve oxidated mercury during the process of the removal of SO2 in flue gas,but in the process of aeration for the quality improvement of seawater,the mercury dissolved in seawater is inclined to release again.The method of gold amalgamation was employed to sample total gaseous mercury(TGM) in the air above the aeration sink,and the seawater in sink was also sampled to study the concentration and trend of mercury emitted from the aeration sink for the seawater-FGD in different operation conditions.The results showed that the average concentration of TGM was about 10.01 ng/m3,which was 20 times higher than that of local background,and it presented a positive correlation with mercury concentrations in seawater of the FGD system and aeration intensity.The experiment also found that the TGM concentrations in daytime,especially during noon time,were higher than those at night,which could be explained by that the photo-reduction played an important role on mercury emission from seawater in the aeration sink.The result of experiment is in favor of evaluating the environmental risk and the impact on local air quality caused by seawater FGD technology.中国科学院知识创新工程重要方向项目(KZCX2-YW-422-4

Effect of catalytic de-NO_x device on the emission characteristics of polycyclic aromatic hydrocarbon in flue gas

通过对装有选择性催化还原(SCR)脱硝装置的燃煤锅炉排放烟气中的多环芳烃(PAHs)进行测试,分析比较了工业锅炉排放的PAHs经过SCR脱硝装置前后的排放特性变化。实验结果表明,烟气催化脱硝装置促进了PAHs含量的增加,特别是低环多环芳烃含量的增加,并提高了其毒性当量,但对PAHs在气相与颗粒相的分布影响不大。The polycyclic aromatic hydrocarbons (PAHs) in flue gas emitted from a coal-fired power plant equipped with selective catalytic reduction (SCR) de-NOx device were determined. The concentrations and distributions of phase and type of PAHs in the flue gas at the outlet and inlet of the SCR device were compared. The results show that the SCR de-NOx device leads to the increase of concentrations and toxic equivalent of PAHs, especially the low rings of PAHs in the flue gas. However, the device has no significant influence on the PAHs partition between particle and the gas phase