Emissions and particle-size distribution of some metallic elements of two peat/oil-fired boilers.
Emissions and particle-size distribution of some metallic elements of two peat/oil-fired boilers.
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两个泥煤/燃油锅炉的一些金属元素的排放和粒度分布。
DOI：
10.1021/es00146a004
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发表时间：
1986
影响因子：
11.4
通讯作者：
M. Jantunen
中科院分区：
文献类型：
--
作者：
A. Itkonen;M. Jantunen
对两个燃用泥炭/燃油的电厂--A厂，燃用100兆瓦/次/粉状泥炭，配备电除尘器(ESP)和B厂，7兆瓦/次/床，燃烧多旋风(MC)--进行了研究，以测定颗粒物和11种元素的排放。用库奥皮奥大学改进的Bird和Tole五级级联离心机采集飞灰收集器前后的颗粒物样品并进行分级，称量后进行原子吸收光谱分析。在粉状泥炭燃烧中，电除尘器前后颗粒的气动尺寸分布均为双峰分布。在电除尘器中，颗粒物的质量中值空气动力学直径(MMAD)从17降至9.6微米。在沸腾燃烧条件下，泥炭的粒度分布只有一种模式。在MC之后，MMAD为2.3...m。所研究的元素为非挥发性元素(Fe、Ca、Mg和Co)、轻微挥发性元素(Cu和Ni)和挥发性元素(As、Cd、Pb和Zn)。参考文献23篇，附图7幅，表6篇。
Two peat/oil-fired power plants - plant A, 100-MW/sub t/ pulverized peat fired, electrostatic precipitator (ESP) equipped, and plant B, 7-MW/sub t/ fluidized bed fired, multicyclone (MC) equipped - were studied to determine emissions of particles and 11 elements. Particulate samples were collected and fractionated before and after the fly ash collectors by the University of Kuopio modified Bird and Tole five-stage cascade centripeters, weighted, and analyzed by use of atomic absorption spectrometry. In pulverized peat firing the aerodynamic size distributions of particles were bimodal both before and after the ESP. The mass median aerodynamic diameter (MMAD) of the particulate matter was reduced in the ESP from 17 to 9.6 ..mu..m. In fluidized bed peat firing the particle size distribution showed only one mode. After the MC the MMAD was 2.3 ..mu..m. The studied elements were nonvolatile (Fe, Ca, Mg, and Co), slightly volatile (Cu and Ni), and volatile (As, Cd, Pb, and Zn). 23 references, 7 figures, 6 tables.