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Cheng-li Wu Yan Cao Zhong-bing Dong Chin-min Cheng Han-xu Li Wei-ping Pan 《煤炭学报(英文版)》2010,16(1):82-87
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. 相似文献
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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? 相似文献
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“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。 相似文献
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