污泥与煤泥混烧过程中氮氧化物释放特性研究

doi:10.3969/j.issn.1008-0198.2024.03.012

湖南电力 ›› 2024, Vol. 44 ›› Issue (3): 83-88.doi: 10.3969/j.issn.1008-0198.2024.03.012

污泥与煤泥混烧过程中氮氧化物释放特性研究

王聪¹, 何洪浩², 邱华³, 魏雨钒¹, 王鑫¹, 徐俊¹, 凌鹏¹

1.华中科技大学能源与动力工程学院,湖北武汉 430074;
2.国网湖南省电力有限公司电力科学研究院,湖南长沙 410208;
3.国家能源集团长源电力股份有限公司,湖北武汉 430066

收稿日期:2023-12-29 修回日期:2024-02-26 出版日期:2024-06-25 发布日期:2024-07-10
通信作者: 徐俊(1991),男,工学博士,副教授,长期从事碳基有机质清洁高效低碳利用、有机质拉曼光谱学及在线检测技术、智能灵活数字发电系统等相关研究工作。
作者简介:王聪(1992),男,博士研究生,主要从事锅炉燃烧优化、污染物控制等研究工作。
基金资助:
国家自然科学基金重点项目(U1910214)

Study on Release Characteristics of Nitrogen Oxide During Sludge and Slime Mixed Burning Process

WANG Cong¹, HE Honghao², QIU Hua³, WEI Yufan¹, WANG Xin¹, XU Jun¹, LING Peng¹

1. School of Energy and Power Engineening, Huazhong University of Science and Technology,Wuhan 430074, China;
2. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410208, China;
3. CHN Energy Changyuan Electric Power Co.,Ltd.,Wuhan 430066, China

Received:2023-12-29 Revised:2024-02-26 Online:2024-06-25 Published:2024-07-10

摘要/Abstract

摘要： 污泥和煤泥产量大,均具有高水高灰特性,而污泥高挥发分易燃烧,煤泥相对高固定碳能维持更久燃烧,两者共燃处置优势大。在立式固定床反应系统上研究一种典型工业污泥(DL)与灵石煤泥(LSS)单独燃烧及不同混合比例燃烧过程中的氮氧化物释放特性。结果表明,DL中氮赋存形态以吡咯型氮(N-5)、蛋白质型氮(N-P)和吡啶型氮(N-6)为主,LSS则以氮氧化物官能团(N-X)、吡咯型氮(N-5)和质子化吡啶型氮(N-Q)为主。两种燃料单独燃烧时,LSS的NO转化率为DL 的6~30倍,两者混烧时存在交互作用;1∶1混合燃烧时NO释放完成时间较两者单独燃烧时提前。掺混比例对NO释放也存在明显影响,DL掺混比例为20%时有利于抑制NO释放。

关键词: 煤泥, 污泥, 混烧, 氮氧化物, 释放特性

Abstract: :The output of sludge and slime is large, and both have the characteristics of high water and high ash. The sludge is particularly prone to ignition due to its elevated volatile matter, while coal slime can maintain combustion with a relatively higher fixed carbon content and the co-combustion and disposal of these two materials present substantial advantages. This study explores nitrogen oxide release characteristics of a typical industrial sludge (DL) and Lingshi coal sludge (LSS) during individual combustion and co-combustion with varying mixing ratios in a vertical fixed-bed reaction system. The results show that the main forms of nitrogen in DL are pyrrole nitrogen (N-5), protein nitrogen (N-P) and pyridine nitrogen (N-6), while the main forms of nitrogen in LSS are nitrogen oxide functional groups (N-X), pyrrole nitrogen (N-5) and protolated pyridine nitrogen (N-Q). When the two fuels are burned separately, the NO conversion rate of LSS is 6~30 times that of DL, and there is an interaction between the two fuels. The completion time of NO release in the 1∶1 mixed combustion is earlier than that in the separate combustion. The mixing ratio also has a significant effect on the release of NO.When the mixing ratio of DL is 20%, it can inhibit the release of NO.

Key words: coal slurry, sludge, mixed firing, nitrogen oxides, release characteristics

中图分类号:

TK227.1
X511

王聪, 何洪浩, 邱华, 魏雨钒, 王鑫, 徐俊, 凌鹏. 污泥与煤泥混烧过程中氮氧化物释放特性研究[J]. 湖南电力, 2024, 44(3): 83-88.

WANG Cong, HE Honghao, QIU Hua, WEI Yufan, WANG Xin, XU Jun, LING Peng. Study on Release Characteristics of Nitrogen Oxide During Sludge and Slime Mixed Burning Process[J]. Hunan Electric Power, 2024, 44(3): 83-88.

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污泥与煤泥混烧过程中氮氧化物释放特性研究

Study on Release Characteristics of Nitrogen Oxide During Sludge and Slime Mixed Burning Process

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