Mercury speciation and removal across full-scale wet FGD systems at coal-fired power plants

The Ontario Hydro Method (OHM) recommended by the United States Environmental Protection Agency (EPA) was used to determine mercury speciation in the combustion flue gas across wet FGD systems. Four coal-fired units with wet FGD systems were chosen to evaluate mercury speciation and mercury removal efficiencies through these wet FGD systems. Chlorine content in coal had been suggested as a main factor that affects mercury speciation in flue gas. It is shown that the higher the chlorine concentration in coal is, the higher the percentage of oxidized mercury (Hg²⁺) is removed in wet FGD systems, which can increase overall mercury removal efficiencies through wet FGD systems. The selective catalyst reduction (SCR) system has a function of oxidizing elemental mercury (Hg⁰) to oxidized mercury. A higher percentage of oxidized mercury in the total vapor mercury at the FGD inlet is observed when SCR is in service. Therefore, higher overall mercury removal efficiencies through wet FGD are attained. Because of different wet FGD operating conditions, there are different mercury removal efficiencies in different units. Elemental mercury reemission took place when a fraction of oxidized mercury absorbed in the slurry is reduced to elemental mercury, and Hg⁰ is reemitted from stack, which results in decreases in mercury removal efficiencies through wet FGD systems.     

Chemring防务公司联袂MEI公司推出“水星”40mm榴弹系列

在巴黎举办的2008欧洲萨托利防务展上,Chemring防务公司和美国MEI公司联袂推出了水星(Mercury)40mm榴弹系列,并公布了其详细的技术细节。该榴弹系列为中速弹药,可实现300m距离内的精确直射,最大有效射程可达800m。水星40mm榴弹系列设计主要用于现役武器,与现有低速榴弹相比,重量和成     

从“水星家纺”问题床单看“召回制度”

从前店后厂到世界名牌．多多少少总会爆出质量问题。人非圣贤．谁也不能保证某家企业的产品全部合格，因此所有企业都需要做好售后工作。当产品出现质量问题时,企业应该如何应对？     

水星来客——优派水星尤里卡VX2753mh液晶显示器

对于显示器大厂优派在今年推出的水星尤里卡系列LED产品,对本刊有所关注的读者想必不会感到陌生,在之前的刊物中我们也曾经对其中的24英寸版本VX2453mh进行过详细介绍（详情请参阅本刊2011年4月号）。如今,这一系列中的27英寸版本VX2753mh也已经上市。其不仅是水星尤里卡系列的目前最大屏版本,同时还拥有双HDMI接口配置,在高清娱乐方面无疑更具优势。     

水星家纺：成就百年品牌

“仁者乐山,智者乐水。”水的存在无不揭示了智者的气度与灵动。在上海水星家用纺织品股份有限公司（以下简称“水星家纺”）董事长李裕杰看来,做人应如水,做品牌更应如水。     

水星家纺全国第2300家门店落户上海长寿路

2008年12月6日,水星家纺全国第2300家门店落户上海长寿路,这也是水星家纺全国单体面积最大的旗舰店。而在11月底,水星家纺逆势进军美国,在Main street大街开出专卖店,西班牙与马德里两地品牌店也同时开业。