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鈣基催化木屑煤混燃及其對排放、灰分特性的影響
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國家自然科學基金資助項目（51106187）和廣東省科技計劃資助項目（2010A060801010）


Effect of Calcium Salt Catalysis on Ash and NOx/SO2 Emission Characteristic during Co-combustion
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    摘要:

    以木屑和褐煤為研究對象，利用循環(huán)流化床反應裝置，研究了不同燃燒工況下鈣基對SO2、NOx排放特性的影響；并通過X射線熒光光譜儀(XRF)、X射線衍射儀（XRD）和等離子體原子發(fā)射光譜儀（ICP）測定了底灰的元素、基團和礦物組成，對附加堿金屬Ca的灰樣進行了熔融特性分析。研究表明, 鈣基對SO2、NOx的釋放有一定的抑制作用。當過量空氣系數(shù)α為1.0時，石灰石的添加對NOx減排最為明顯。且隨著木屑含量的減少， NOx產(chǎn)率有所降低；鈣基對SO2的脫除受反應溫度的影響。在溫度為700~900℃、Ca和S質量比為2.0時的固硫脫硫效果最好；在CaCO3的作用下，底灰的熔融現(xiàn)象基本消失。

    Abstract:

    Choosing lignite mixing with sawdust as object, the effect of calcium salt catalysis on SO2 and NOx emission was analyzed by using circulating fluidized bed reactor. The ash elements groups and mineral composition of ash samples were measured through X-ray fluorescence spectrometer(XRF), X-ray diffraction(XRD) and inductively coupled plasma atomic emission spectrometer(ICP). The result showed CaCO3 had a certain effect on SO2 and NOx emission reduction. The addition of limestone had obvious effect on NOx emission reduction with α=1.0. NOx production reduced with the decreasing of sawdust content. The removal of SO2was controlled by reaction temperature. Under the condition of temperature of 700~900℃ and Ca/S of 2.0, desulfurization was the best. The ash melting phenomenon disappeared with the effect of CaCO3. 

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王海蓉,楊文兵,王雅麗.鈣基催化木屑煤混燃及其對排放、灰分特性的影響[J].農(nóng)業(yè)機械學報,2012,43(8):121-127. Wang Hairong, Yang Wenbing, Wang Yali. Effect of Calcium Salt Catalysis on Ash and NOx/SO2 Emission Characteristic during Co-combustion[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(8):121-127.

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  • 在線發(fā)布日期: 2012-07-24
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