城市生活垃圾焚烧炉SNCR工艺运行参数优化及高效降氮

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management Pub Date : 2025-07-05 DOI:10.1016/j.wasman.2025.114996

Jun Liu , Zheng Xie , Yingzhe Xu , Yunzhou Han , Quan Zhang , Bingyu Guo , Qiuhong Wang , Xinwei Guo , Hailiang Du

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引用次数: 0

摘要

本研究通过数值模拟分析了垃圾焚烧炉选择性非催化还原（SNCR）系统中NO的还原过程，研究了雾滴粒径（120 ~ 200 μm）、速度（34 ~ 50 m/s）、雾化角度（30°~ 50°）对SNCR NO去除率的影响。研究了三个参数对SNCR系统脱硝效率的影响。通过对这三个参数的修改，总能在所研究的范围内找到NO去除率的最大值和相应的NH3滑移的最小值。在研究的操作窗口内，获得的最高NO去除率为52.7%，NH3滑移率也最低，为5.69 ppm。当雾化角度为35°、速度为42 m/s、还原剂粒径为180 μm时，去除率最高。在评价参数中，液滴粒径对NO去除率的影响最为显著。因此，建议在优化垃圾焚烧炉SNCR系统对NO的去除效率时，首先确定合适的液滴粒径范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Operating parameters optimization and efficient NO reduction of SNCR process in a municipal solid waste incinerator

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Operating parameters optimization and efficient NO reduction of SNCR process in a municipal solid waste incinerator

In this study, the NO reduction process in the Selective non-catalytic reduction (SNCR) system of a waste incinerator was analyzed by numerical simulation, and the effects of droplet size (120 to 200 μm), velocity (34 to 50 m/s), and atomization angle (30° to 50°) on the NO removal efficiency of SNCR were studied. The three parameters investigated showed an influence on the NO removal efficiency of the SNCR system. A maximum of NO removal efficiency with a corresponding minimum of NH₃ slip could always be found by modifying the three parameters within the ranges investigated. The highest NO removal efficiency obtained within the operating window investigated was 52.7 %, which also yielded the lowest NH₃ slip, i.e. 5.69 ppm. The maximum removal efficiency was achieved with an atomization angle of 35°, velocity 42 m/s, and 180 μm droplet size of reducing agent. Among the evaluated parameters, droplet size exerted the most significant impact on NO removal efficiency. It is therefore recommended that suitable droplet size range should be determined first when optimizing the NO removal efficiency of SNCR systems in waste incinerators.

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来源期刊

Waste management 环境科学-工程：环境

CiteScore

15.60

自引率

6.20%

发文量

492

审稿时长

39 days

期刊介绍： Waste Management is devoted to the presentation and discussion of information on solid wastes,it covers the entire lifecycle of solid. wastes. Scope: Addresses solid wastes in both industrialized and economically developing countries Covers various types of solid wastes, including: Municipal (e.g., residential, institutional, commercial, light industrial) Agricultural Special (e.g., C and D, healthcare, household hazardous wastes, sewage sludge)