| 燃煤机组耦合固废焚烧关键技术研究进展 |
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| 作者姓名： | 颜雪芬 薛少洋 赵钰琳 薛留宇 侯新杰 许宏鹏 |
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| 作者单位： | 1.燕山大学 车辆与能源学院, 河北 秦皇岛 066000 |
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| 基金项目： | 河北省自然科学基金资助项目“生活垃圾成分多变性对污染物生成与燃烧过程影响机制研究”（E2021203041） |
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| 摘 要： | 目的 燃煤与固体废弃物混合掺烧不仅可以实现固废的能量回收利用，也是实现燃煤发电的碳减排的路径之一。 方法 文章综述讨论了燃煤电站掺混固废的研究工作，主要介绍了基于目前主流的电站锅炉为反应器开展燃煤与不同固废掺混的燃烧应用与技术发展；从燃料经济性、混合燃料的飞灰特征、污染物排放以及碳税角度评价燃煤掺混固废的燃烧技术发展；最后讨论了直接掺混和间接掺混的技术的特点。 结果 燃煤直接掺混固废燃烧时需要尽可能减少对锅炉运行的影响，特别是气体污染物的排放以及飞灰对换热面的影响和飞灰无害化处置。间接掺混可以避免混合燃料燃烧对炉膛的影响，但是需要较高的硬件成本投资且耦合技术较为复杂。富氧燃烧技术依旧需要对现有锅炉结构优化来提高该技术的适用性。 结论 直接掺混可实现性与成本优于间接掺混，且循环流化床燃料适应广的特点有利于燃煤直接掺混固废燃烧技术的应用，随着基于循环流化床的富氧燃烧技术的发展将更有利于实现火电厂的碳减排。
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| 关 键 词： | 污染物排放 经济评价 碳排放 直接掺混 间接掺混 富氧燃烧 |
| 收稿时间： | 2022-06-16 |
Research Progress on Key Technologies for Coupled Combustion of Coal and Solid Waste in Coal-Fired Unit |
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| Affiliation: | 1.School of Vehicle and Energy, Yanshan University, Qinhuangdao 066000, Hebei, China2.College of Zhongran, Hebei Normal University, Shijiazhuang 050000, Hebei, China |
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| Abstract: | Introduction The co-combustion of coal and solid waste can not only realize the energy recycling of solid waste, but also is one of the paths to realize carbon emission reduction of coal-fired power generation. Method This paper reviewed the study on co-combustion of coal and solid waste in coal-fired power plants, and mainly introduced the combustion application and technology development of co-combustion of coal and different solid wastes based on the current mainstream power plant boiler as a reactor; Evaluated the development of co-combustion technology of coal and solid waste from the perspectives of fuel economy, fly ash characteristics of mixed fuels, pollutant emissions, and carbon tax; Finally discussed the characteristics of direct and indirect mixing technologies. Result Direct co-combustion of coal and solid waste is required to minimize the impact on boiler operation, especially the emission of gas pollutants, the impact of fly ash on heat transfer surfaces, and the harmless disposal of fly ash. Indirect co-combustion can avoid the influence of mixed fuel combustion on the furnace, but requires high hardware cost investment and more complicated coupling technology. The oxygen-enriched combustion technology still needs to optimize the existing boiler structure to improve the applicability of the technology. Conclusion The direct co-combustion is better than the indirect co-combustion considering the realizability and the cost, and the extensive adaptability of circulating fluidized bed fuel is conducive to the application of direct co-combustion technology of coal and solid waste. With the development of the oxygen- enriched combustion technology based on the circulating fluidized bed, it is more conducive to realize carbon emission reduction in coal-fired power plant. |
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