Development and application of anti-fouling ceramic coating for high-sodium coal-fired boilers

被引：16

作者：

Wang, Jinqing ^{[1
]}

Yuan, Yichao ^{[1
]}

Chi, Zuohe ^{[2
]}

Zhang, Guangxue ^{[2
]}

机构：

[1] Univ Shanghai Sci & Technol, Shanghai Key Lab Multiphase Flow & Heat Transfer, Shanghai 200093, Peoples R China

[2] China Jiliang Univ, Coll Metrol Technol & Engn, Hangzhou 310018, Zhejiang, Peoples R China

来源：

JOURNAL OF THE ENERGY INSTITUTE | 2018年 / 91卷 / 06期

基金：

中国国家自然科学基金;

关键词：

High-sodium coal; Anti-fouling; Boiler efficiency; Ceramic coating; ZHUNDONG COAL; ASH DEPOSITION; BORON-NITRIDE; COMBUSTION; ALKALI; TEMPERATURE; TRANSFORMATION; ELEMENTS; CAPTURE; AIR;

D O I：

10.1016/j.joei.2017.08.003

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

To address the fouling problem in boilers fired with high-sodium coal (HSC), a composite ceramic coating was developed using the slurry method and applied on 15CrMo steel. After sintering the composite ceramic coating had a dense structure and was well bonded to the substrate forming a metallurgical damascene structure. The fouling and thermal shock resistance of the ceramic coating to sodium sulfate was found be excellent. After five fouling cycles, the uncoated steel had a surface fouling rate of 21.9%, compared to 0% for the coated steel. The composite ceramic coating also demonstrated an appreciable fouling resistance to sodium sulfate. Similar to the flaky oxide film formed on the uncoated steel surface, only a few fine sodium sulfate particles penetrated the microcracks generated during the sintering of the ceramic coating. However, remarkable anti-fouling results were achieved when the composite ceramic coating was applied in an industrial boiler fired with a Zhundong HSC blend. (C) 2017 Energy Institute. Published by Elsevier Ltd. All rights reserved.

引用

页码：962 / 969

页数：8

共 31 条

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