On Ash Deposition Rates from Air and Oxy-Combustion of Pulverized Coal, Petroleum Coke, and Biomass
On Ash Deposition Rates from Air and Oxy-Combustion of Pulverized Coal, Petroleum Coke, and Biomass
复制标题
DOI：
10.1021/acs.energyfuels.8b04185
复制
发表时间：
2019-02
期刊：
影响因子：
5.3
通讯作者：
Yueming Wang;Xiaolong Li;J. Wendt
中科院分区：
文献类型：
--
作者：
Yueming Wang;Xiaolong Li;J. Wendt
本文综合了多种粉状固体燃料(包括煤、生物质及其混合物)在空气和氧燃烧过程中的积灰增长率的大量实验数据。实验数据是在允许固体燃料自持燃烧的100kW(额定)气流燃烧室中进行的35次试验获得的。使用壁温控制的火山灰沉积探头测量火山灰沉积速率。收集的沉积物被分为紧邻换热表面的紧密结合的“内部沉积物”和进一步向外生长的松散结合的“外部沉积物”。通过电迁移率、光散射法和冲击器法获得了灰气溶胶颗粒尺寸分布(PSD‘s)和尺寸分离成分。给出了内、外灰渣的沉积速率。内部沉积物的增长速度与烟气中亚微米颗粒物(PM1)浓度成正比，但与烟气中PM1浓度的相关性较差。
This paper presents a synthesis of a large body of experimental data on growth rates of ash deposits from the air and oxy-combustion of multiple pulverized solid fuels, including coal, biomass, and their blends. The experimental data were obtained from 35 tests in a 100 kW (rated) entrained-flow combustor that allowed for self-sustained combustion of solid fuels. Ash deposition rates were measured using a wall-temperature-controlled ash deposition probe. The collected deposits were divided into tightly bound “inside deposits” adjacent to the heat transfer surface and loosely bound “outside deposits” that grow further out. Ash aerosol particle size distributions (psd’s) and size-segregated compositions were obtained through electric mobility, light scattering, and impactor methods. Rates of ash deposition for both inside and outside deposits are presented. Rates of growth of the inside deposit were proportional to the sub-micrometer particle (PM1) concentration in the flue gas but correlated poorly with th...