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我国脱硫脱硝技术的发展及应用 总被引:1,自引:0,他引:1
《中国环保产业》2014,(8):18-21
概述了新排放标准对脱硫脱硝行业技术发展的影响;重点分析了燃煤锅炉脱硫技术和钢铁行业脱硫脱硝技术的发展应用情况。 相似文献
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对烟气脱硝技术在玻璃熔窑的应用现状及研究情况进行分析与讨论。SCR烟气脱硝技术具有脱硝效率高、技术成熟的优点,在玻璃熔窑得到广泛应用。但是该技术存在工程投资高、催化剂活性易受烟气影响等缺点。目前国内正在研发的玻璃熔窑烟气同时脱硫脱硝技术,具有设备精简、工程投资少等优点,但还存在一些问题及不足。随着技术的发展,以NaClO氧化法为代表的同时脱硫脱硝新技术与现有技术的联合应用,将成为玻璃熔窑烟气脱硝技术的发展方向。 相似文献
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Robles C Greff S Pasqualini V Garzino S Bousquet-Mélou A Fernandez C Korboulewsky N Bonin G 《Journal of environmental quality》2003,32(6):2265-2271
The aim of the present study is to assess whether certain ecophysiological responses (contents of total phenols, total proanthocyanidins, and total and simple flavonols), in the needles of Aleppo pines (Pinus halepensis Mill.) may be valid bioindicators for the assessment of the air quality. Samples were taken at five natural sites polluted by various pollutants (NO, NO2, other NOx, SO2, and O3). The results show a decrease in total phenol concentrations with levels of nitrogen oxide pollutions (significant negative correlations between the total phenol concentrations and concentrations of NO, NO2, and other NOx). Total flavonoids (total flavonols and proanthocyanidins) are useful bioindicators for ozone pollution (significant negative correlations between total proanthocyanidins and the concentrations of ozone and significant positive correlations between total flavonols and the ozone pollution). Sulfur dioxide pollution is distinguished by low concentrations in quercetin, isorhamnetin, and kaempferol (significant negative correlations between these simple flavonols and the concentrations of SO2). This work confirms the strong interest of using the phenolic compounds of Pinus halepensis as biological indicators of air quality. 相似文献
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NOx emission is produced during combustion of fuels at high temperature. Excessive release of NOx causes several effects on living organisms and environment. In this work, the efforts to reduce NOx emission by developing electrochemically activated cells (EACs) for a diesel engine fuelled with diesel and biodiesel fuel are discussed. EAC technique is vital after treatment technology attempted in this work to simultaneous control of NOx, HC, and PM emissions. In this method, two types of EACs were developed. The CuO–YSZ electrolyte and CuO–YSZ electrolyte with BaO coating were developed and tested with diesel and biodiesel exhaust. Compared with diesel fuel, use of biodiesel fuel increased NOx emission by 11% and PM emission was slightly reduced with biodiesel, which was due to the presence of fuel bond oxygen content in biodiesel. The investigation has demonstrated low-temperature activation of the EACs at 250–350°C which was due to the addition of CuO to YSZ. In this work, maximum NOx reduction was achieved for CuO–YSZ cells with BaO NOx storage and the simultaneous control of HC and PM emission also was observed in this technique. NOx reduction by EAC is a vital technique and can be retrofitted with any diesel engine for emission reduction. 相似文献
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