Part I Invited Talks
1 Advances in Two-Fluid LES of Two-Phase Combustion LXZhou 3
2 Flexible Operation of High Efficiency Coal Power Plants to Ensure Grid Stability When Intermittent Renewables Are IncludedAndrewMinchener 19
3 Advances in Modeling Coal Pyrolysis, Char Combustion, and Soot Formation from Coal and Biomass TarThomasHFletcher, DavidOLignell, AlexJosephson, Andrew Richards,andTroyHolland 29
4 The Change in Bed Materials Size Distribution and Its Effect on CFB Boiler OperationGARyabovandOMFolomeev 39
5 Insights of MILD Combustion from High-Fidelity SimulationsHangZhou,Josh McConnell,Terry A Ring,and James C Sutherland 59
Part II Basic Coal Quality and Combustion
6 Study on Alkali Metal Migration Characteristics in the Pyrolysis of Naomaohu Coal in CO AtmospherePeipeiGao,Junjie Fan,andZhiyuanRen 85
7 Precipitation Characteristics of Alkali/Alkaline Earth Metal in High Alkali CoalHangShi, Yuxin Wu,Junfu Lyu,Man Zhang,and Hai Zhang 97
VIII Contents
8 Experimental Study on Removal of Low Concentration Coal Tar in Syngas by Mg-Ca Composite CatalystLiang Wenzheng, Yan Hao, Li Yanhui, Cui Weiwei, Cong Xiaochun, and Wang Cuiping 107
9 Experimental Investigation on Sodium Migration and Mineral Transformation in Ash Deposit During Gasification of Zhundong Coal Using a Drop Tube Furnace Chengchang Liu, Chang'an Wang, Chaowei Wang, Yongbo Du, Guantao Tang, Guangyu Li, and Defu Che 117
10 Study on Characteristics and Influencing Factors of Coal-Water Slurry PyrolysisFan Feng, Boyang Li, Juan Yu, Yao Zhang, Chen Lin, and Zhongxiao Zhang 125
11 Soot Formation in High-Temperature Pyrolysis of Various Coals 137
Shengjie Bai, Yongbing Wang, Gaofeng Dai, Peng Li, and Xuebin Wang
12 Effect of Microstructures on Char Combustion ReactivityJingyuan Li, Lele Feng, Yiqun Huang, Yang Zhang, Lyu Junfu, and Man Zhang 147
13 Effect of K2CO3 Addition on CO2 Gasication Characteristics and Ash Sintering Behaviour of a Chinese Lignite at Different Temperatures and Pressures as Examined Using a High-Pressure Thermogravimetric AnalyserJianbo Li, Zhezi Zhang, Jian Hao, Jiguang Zhang, Mingming Zhu, and Dongke Zhang 159
14 Ash Deposition and Slagging Behavior of Xinjiang High-Alkali Coal in a 20MWth Cyclone Combustion Test FacilityXiaojiang Wu, Yigong Zhou, Yezhu Sun, Zhongxiao Zhang, Mingqiang Li, Xiang Zhang, Kai Yan, Yuehua Li, Nan Chen, and Xinglei Hu 179
15 Release Characteristics of Alkali Metals
in Oxygen-Enriched Combustion of a Single Char Particle with Random Pore Model 189
Sibo Qu, Haiming Wang, and Changfu You
16 Experimental Study on the Influence of Slagging and Fouling for Wall Temperature DistributionDeli Li, Enlu Wang, Jinda Mao, Wei Wu, Kai Li, and Qi Wang 205
Contents IX
17 Numerical Investigation of Fly Ash Deposition onto Tube Bundles Inside Coal-Fired BoilersYipeng Li, Qian Huang, Lu Duan, and Shuiqing Li 227
18 Effect of Refractory Lining Thickness on Slag Layer Behavior in Cyclone BarrelChunli Tang, Yueyi Hu, Tao Zhu, Limin Wang, Yanhua Liu, and Defu Che 237
19 Characteristics of Alkali Metal Migration and Transformation During Pyrolysis of Naomaohu CoalJunjie Fan, Jiaxiao Deng, Zhiyuan Ren, and Jianli Wang 251
Part III Pulverized Coal Combustion
20 Numerical Investigation on Combustion Characteristics and NOx Emission of Double-Reheat Tower Boiler at Different LoadsYan Zhang, Shihao Ma, Jin Guo, Yuesheng Li, Zhengrong Zhu, Jiaqi He, Lei Deng, and Defu Che 265
21 Numerical Study on Inuence of Platen Super-Heaters on Heat Deviation in a 600 MW Tangentially Fired Pulverized-Coal BoilerKai Chen, Yan Zhang, Lei Deng, and Defu Che 279
22 Industrial Experimental and Numerical Simulation Study on the Combustion and NOx Formation Characteristics in a 600MWe Utility Boiler with a Novel Swirl Burner Burning Bituminous CoalTao Shen, Zhengqi Li, Pisi Lu, Qiang Yu, Xin Song, and Jingyu guan 293
23 Distribution of Temperature and Characteristics of Soot Volume Fraction in MILD-OCC FlameJingwen Lu, Shuwei Zhang, Longhui Tan, and Jianyi Lu 317
24 Experimental Investigation of Methane Assisted Pulverized Coal Flames Using an Optical Accessible Combustion ChamberCAxt, DZabrodiec, SPielsticker, TKreitzberg, OHatzfeld, and RKneer 327
25 Ignition Characteristics of Coal/Air Jets from Rectangular NozzlesLilin Hu, Pengyuan Liu, Yang Zhang, Lele Feng, Yuxin Wu, Junfu Lyu, and Hai Zhang 339
Contents
26 Numerical Simulation on Pulverized Coal Combustion Chamber with Air CoolingYongying Wang, Naiji Wang, and Shi Yang 355
27 Effect of Inner/Outer Secondary Air Mass Flow Rate on the Airow Characteristics of the 14-MW Double Cone Burner 363
Nan Jia, Fang Niu, Pengzhong Liu, Pengtao Wang, and Jianming Zhou
28 Theoretical Analyses on Isolated Particle Ignition of Coal and Biomass 373
Ye Yuan, Hongpei Gao, Zhenghai Shi, Xianbin Sun, Ping Xiao, Shisen Xu, and Shuiqing Li
29 Numerical Simulation on Combustion Characteristics of Co-Firing Biomass Syngas and Coal in a 660 MW Utility Tower Boiler 385
Shihao Ma, Yan Zhang, Zhengrong Zhu, Lei Deng, and Defu Che
30 Deactivation of V2O5–WO3–TiO2 SCR Catalyst by HF During Co-Firing Electrolytic Aluminum Waste with CoalZhengrong Zhu, Shihao Ma, Yikun Wang, Yan Zhang, Yuxiao Qiu, Lei Deng, and Defu Che 397
31 Numerical Study on Combustion and NOx Emission Characteristics of Co-Firing Semi-Coke and Coal in a Tangentially-Fired Utility BoilerQinqin Feng, Chang'an Wang, Pengqian Wang, Zhichao Wang, Wei Yao, Lei Zhao, Yongbo Du, and Defu Che 411
32 Investigation on NOx Formation Characteristics During Semi-coke Air-Staged CombustionHui Li, Naiji Wang, Shi Yang, Xin Zhang, Yuhong Cui, and Jianming Zhou 423
33 Numerical Investigation on Combustion Stability of Coal Slurry in the Double Cone BurnerMo RiGen, Yang Shi, and Liu JianHang 435
34 Experimental Study of NOx Emission and Char Characteristics 449
Jialun Wang, Dongfang Wang, Mingming Wang, Mingyan Gu, and Yuyu Lin
Part IV Fluidized Bed Combustion
35 Study on Penetrability of Central Secondary Air Jet in CFB and Its Inuences on Fluidization Characteristics 467
Chen Lin, Juan Yu, Yao Zhang, Fan Feng, and Zhong-xiao Zhang
Contents XI
36 The Fundamental Studies on Combustion of Sintering Flue Gas in Circulating Fluidized BedXin Tao, Lujian Chen, Yiqun Huang, Runxia Cai, Hairui Yang, Shouyu Zhang, and Junfu Lyu 477
37 Emission Characteristic of NOx in CFB Boiler at Low LoadLujian Chen, Xin Tao, Shouyu Zhang, Hairui Yang, and Junfu Lyu 489
38 A Method to Measure the Solid Circulation Rate in CFB Boilers 499
Yangxin Zhang, Lu Cheng, Yang Zhang, Baoguo Fan, Hai Zhang, and Junfu Lyu
39 Reliability Analysis of 100 MW and Above Circulating Fluidized Bed Boiler Units in China in 2017 513
Xia Zhou, Jianfeng Li, Yuge Yao, Shujie Chen, Hong Zhou, Qing Liu, and Geng Chen
40 Development of Advanced Ultra Super Critical Circulating Fluidized Bed Technology by DongFang BoilerNie Li, Gong Liming, Xue Dayong, Lu Jiayi, Wei Lixiao, and Huang Min 523
41 Cold-Experimental Study About Pressure Resistance of CFB Wind CapsBoheng Tong, Hongyu Zeng, Qingfeng Zhang, and Junfu Lyu 537
42 Progress and Main Technical Characteristics of Ultra-supercritical Circulating Fluidized Bed Boiler Shengwei Xin, Yingping Li, Peng Zhang, Changhua Hu, Man Zhang, and Hu Wang 547
43 Experimental Study on Peaking Performance of 145 MW Circulating Fluidized Bed Boiler Unit with Retrotting for Low-Vacuum Heat SupplyXuhui Zhang, Zhonghua Zhao, Gui Long Xiong, Fuxing Cui, Xinguang Dong, Qingchuan Zhao, Ke Liu, Haichao Wang, and Jinglong Liu 561
44 The Technology and Application of a New Type of Coal Water Slurry-Fired CFB with High Efficiency and Clean Combustion 571
Yuping Hao, Ruiguo Li, and Yujiao Chen
45 Study on Pollutants Control of Circulating Fluidized Bed Boiler Burning Low Caloric Value CoalWanzhu Wu, Ruixin Li, Hu Wang, and Congyang Gu 583
The International Symposium on Coal Combustion (ISCC), initiated in 1987 by Tsinghua University, has now evolved into a unique and influential series of forums every four years, which concentrates on the clean, effcient, flexible, low-carbon, and intelligent technologies for solid fuel-based energy.
The most recent 9th Symposium was successfully held at Qingdao, China in July 21–24, 2019, as co-hosted by the Institute of Thermal Engineering of Tsinghua University, and Shandong University of Science and technology (local organizer). The renewed International Advisory Committee now consists of 59 distinguished experts from 15 countries (27 Chinese and 32 International).
The 9th ISCC receives a record-breaking number of full-paper submissions covering the latest research and development on solid fuel-based energy technology. The colloquium chairs and reviewers dedicate themselves to a high-quality, two-round review procedure. In this symposium, 148 oral presentations and 122 posters were selected.Invited talks include11plenaryand6keynote lectures. Among them about .fty prominent papers were further submitted to special issues of Fuel and Frontiers in Energy.
More than 260 delegates attended the symposium from 16 countries including Australia, China, Germany, India, Japan, Portugal, Russia, SouthKorea, UK, USA, Vietnam, etc. Five best paper awards were delivered for the first time to promote youth scholars for the ISCC. A lasting aim of the symposium is to establish and strengthen international bridges between universities, research institutes and the industry community. The 9th ISCC has seen more collaborative contributions, and launched novel sessions of panel discussionson international projects, encompassing Sino-US and Sino-Europe collaboration.
The proceedings of the 9th ISCC collect5invited speeches and83 technical papers that are presented in oral or in poster. Papers are divided into6following sections including the number of papers.
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Basic Coal Quality&Combustion/14
Pulverized Coal Combustion/15
Fluidized Bed Combustion/11
Low Carbon Energy/6
VI Preface
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Emissions Control/23
Design and Operating Experiences/14
The proceedings can serve as a reference, and hopefully inspire new ideas for scientists, engineers, graduate students, equipment manufactures and operators, as well as technical managers who are working on the broad .eld of solid fuel-based energy technologies.
We would like to acknowledge our members of the International Advisory Committee who devoted their time and energy to review the manuscripts, and to express our appreciation to Dr. Qiang Li of Tsinghua University Press for his efforts in publishing the proceedings.
Beijing, China Prof. JunfuLyu Prof. Shuiqing Li
