Particle size distribution effects on gas-particle mass transfer within electrostatic precipitators

Clack HL

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Particle size distribution effects on gas-particle mass transfer within electrostatic precipitators

机译：粒径分布对静电除尘器内气体颗粒传质的影响

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Varying degrees of mercury capture and transformation have been reported across electrostatic precipitators ( ESPs). Previous analyses have shown that the dominant mass transfer mechanism responsible for mercury capture within ESPs is gas-particle mass transfer during particulate collection. Whereas previous analyses assumed dispersions of uniform size, the present analysis reveals the effects of polydispersity on both gas-particle mass transfer and particle collection within an ESP. The analysis reveals that the idealized monodisperse particle size distribution provides the highest gas-particle mass transfer but results in the lowest particle collection efficiency (% mass). As the particle size distribution broadens, gas-particle mass transfer decreases and particle collection efficiency increases. The results suggest that more than just reporting mean particle diameter provided by the sorbent manufacturer, pilot- and field-tests of sorbent injection for mercury emissions control need to experimentally measure the particle size distribution of the sorbent as it is injected in order to facilitate interpretation of their results.

机译：据报道，静电除尘器（ESP）中汞的捕获和转化程度不同。先前的分析表明，ESP内汞捕获的主要传质机理是微粒收集过程中的气-质传质。先前的分析假设分散体的大小均匀，而本分析则揭示了多分散性对ESP内气体颗粒传质和颗粒收集的影响。分析表明，理想化的单分散粒径分布提供了最高的气体-颗粒质量传递，但导致了最低的颗粒收集效率（质量百分比）。随着粒度分布变宽，气体-颗粒的传质减少并且颗粒收集效率增加。结果表明，不仅仅是报告吸附剂制造商提供的平均粒径，用于控制汞排放的吸附剂注入的中试和现场测试还需要通过实验测量注入的吸附剂的粒径分布，以便于解释。他们的结果。

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《Environmental Science & Technology》 |2006年第12期|p. 3929-3933|共5页
作者
Clack HL;
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作者单位

IIT, Dept Mech Mat & Aerosp Engn, Chicago, IL 60616 USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类环境化学;
关键词
MERCURY;

机译：汞;

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专利

1. Further consideration of gas-particle mass transfer simulation during electrostatic precipitation using lower order representations of particle size distributions: Variable size distributions [J] . Clack Herek L. Journal of Electrostatics . 2020,第1期

机译：进一步考虑使用粒度分布的较低阶表示性静电降水期间的气体颗粒传质模拟：可变尺寸分布
2. Lower order representations of evolving particle size distributions for rapid gas-particle mass transfer simulations during electrostatic precipitation [J] . Clack Herek L. Fuel Processing Technology . 2018,第期

机译：静电降水期间快速气体颗粒传质模拟的演化粒度分布的较低顺序表示
3. Bimodal fly ash size distributions and their influence on gas-particle mass transfer during electrostatic precipitation [J] . Herek L.Clack Fuel Processing Technology . 2006,第11期

机译：双峰粉煤灰粒度分布及其对静电沉淀过程中气-质传质的影响
4. Mass Transfer Limits to Mercury Capture within Electrostatic Precipitators [C] . Herek L. Clack the Air Waste Management Association's Annual Conference Exhibition . 2006

机译：静电除尘器内汞捕获的传质限制
5. Numerical Analysis of Biomass Gasification in a Fluidized Bed Reactor: Effects of Particle Size Distribution, Mixing Dynamics, and Heat Transfer [D] . ?Hashemisohi, Abolhasan 2019

机译：流化床反应器中生物质气化的数值分析：粒度分布，混合动力学和传热的影响
6. Specific ion effects on the particle size distributions of cell culture–derived influenza A virus particles within the Hofmeister series [O] . Michael Martin Pieler, Anja Heyse, Michael Werner Wolff, 2017

机译：Hofmeister系列中特定离子对细胞培养来源的甲型流感病毒颗粒粒径分布的影响
7. Electrostatic precipitator for measuring particle-size distribution in aerosols / [O] . Saunders, Bernard G., U.S. Atomic Energy Commission., Oak Ridge National Laboratory. 1952

机译：用于测量气溶胶中粒度分布的静电除尘器/

Particle size distribution effects on gas-particle mass transfer within electrostatic precipitators

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