生物质锅炉积灰特性与露点腐蚀

doi:10.11949/j.issn.0438-1157.20160733

化工学报 ›› 2016, Vol. 67 ›› Issue (12): 5237-5243.DOI: 10.11949/j.issn.0438-1157.20160733

生物质锅炉积灰特性与露点腐蚀

马海东, 王云刚, 赵钦新, 陈衡, 梁志远, 金鑫

西安交通大学热流科学与工程教育部重点实验室, 陕西西安 710049

收稿日期:2016-05-27 修回日期:2016-09-23 出版日期:2016-12-05 发布日期:2016-12-05
通讯作者: 王云刚。ygwang1986@mail.xjtu.edu.cn
基金资助:
国家自然科学基金项目（51606144）；高等学校博士学科点专项科研基金项目（20130201110045）。

Characteristics of ash deposit and dew point corrosion in biofuel boiler

MA Haidong, WANG Yungang, ZHAO Qinxin, CHEN Heng, LIANG Zhiyuan, JIN Xin

Key Laboratory of Thermo-Fluid Science and Engineering(Ministry of Education), Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China

Received:2016-05-27 Revised:2016-09-23 Online:2016-12-05 Published:2016-12-05
Supported by:
supported by the National Natural Science Foundation of China(51606144) and the Specialized Research Fund for the Doctoral Program of Higher Education(20130201110045).

摘要/Abstract

摘要：

以ND钢为研究对象，选取316 L不锈钢为对比材料，主要研究了65 t·h^-1生物质循环流化床锅炉烟气深度冷却条件下的积灰与露点腐蚀耦合特性。对积灰和腐蚀层进行了XRF、XRD、SEM和EDS分析。实验结果表明：实验管件表面沉积物可分为腐蚀层、耦合层和灰沉积层（NH₄Cl、SiO₂和（NH₄）₂SO₄）。耦合层包含了灰沉积物和金属腐蚀产物，且与灰沉积层黏结紧密易剥落；腐蚀层多为金属的氯化物和氧化物，其厚度随实验进口水温降低而降低，当管壁温低于烟气水露点时，ND钢被腐蚀的程度急剧加重。在实验条件下，ND钢的抗露点腐蚀能力弱于316L不锈钢。

关键词: 腐蚀, 沉积物, 烟道气, 生物燃料

Abstract:

The coupling characteristics between ash deposit and dew point corrosion of deep-cooling flue gas on ND steel and 316 L stainless steel(control) was investigated in a 65 t·h^-1 circulating fluidized bed biofuel boiler. The ash deposit and corrosion layer were studied by X-ray fluorescence spectroscopy(XRF), X-ray diffraction(XRD), scanning electron microscope(SEM) and energy dispersive spectrometer(EDS). Results indicated that the deposits on tube surface could be classified as layers of corrosion, coupling and ash deposit(NH₄Cl、SiO₂ and(NH₄)₂SO₄). The coupling layer contained ash deposit and metal corrosion by-product, which was prone to spall off because of strong adhesion to the ash deposit layer. The corrosion layer, mainly composed of metal compounds of chlorides and oxides, reduced dramatically in thickness with the decrease of inlet water temperature. The degree of corrosion of ND steel increased sharply when wall temperature was below water dew point of flue gas. ND steel showed corrosion resistance inferior to 316 L stainless steel at experimental conditions.

Key words: corrosion, deposition, flue gas, biofuel

中图分类号:

TK16

马海东, 王云刚, 赵钦新, 陈衡, 梁志远, 金鑫. 生物质锅炉积灰特性与露点腐蚀[J]. 化工学报, 2016, 67(12): 5237-5243.

MA Haidong, WANG Yungang, ZHAO Qinxin, CHEN Heng, LIANG Zhiyuan, JIN Xin. Characteristics of ash deposit and dew point corrosion in biofuel boiler[J]. CIESC Journal, 2016, 67(12): 5237-5243.

参考文献 24

[1]	XIONG S J, BURYALL J, ORBERG H, et al. Slagging characteristics during combustion of corn stovers with and without kaolin and calcite[J]. Energy & Fuels, 2008, 22(5):3465-3470.
[2]	KHAN A A, JONG W D, JANSENS P J, et al. Biomass combustion in fluidized bed boilers:potential problems and remedies[J]. Fuel Processing Technology, 2009, 90(1):21-50.
[3]	王爽, 姜秀民, 王谦, 等. 海藻生物质颗粒流化床燃烧试验研究[J]. 化工学报, 2013, 64(5):1592-1600. WANG S, JIANG X M, WANG Q, et al. Fluidized bed combustion of seaweed biomass particles[J]. CIESC Journal, 2013, 64(5):1592-1600.
[4]	国家发展和改革委员会. 可再生能源资源[R]. 2007:1-5. National Development and Reform Commission. Renewable Energy Resource[R]. 2007:1-5.
[5]	NIU Y Q, ZHU Y M, TAN H Z, et al. Biomass boiler exhaust gas temperature factors analysis and improvement measures[J]. Journal of Harbin University of Science & Technology, 2014, 9(3):453-456.
[6]	马海东, 王云刚, 赵钦新, 等. 燃煤电厂烟气冷却器壁上沉积物分析和形成机理[J]. 化工学报, 2015, 66(5):1892-1896. MA H D, WANG Y G, ZHAO Q X, et al. Analysis and formation mechanism of condensates on surface of flue gas cooler of coal-fired power plant[J]. CIESC Journal, 2015, 66(5):1892-1896.
[7]	HANSEN L A, NIELSEN H P, FRANDSEN F J, et al. Influence of deposit formation on corrosion at a straw-fired boiler[J]. Fuel Processing Technology, 2000, 64(1/2/3):189-209.
[8]	JENSEN P A, FRANDSEN F J, DAM-JOHANSEN K, et al. Experimental investigation of the transformation and release to gas phase of potassium and chlorine during straw pyrolysis[J]. Energy & Fuels, 2000, 14(6):1280-1285.
[9]	WESTBERG H M, BYSTROM M, LECKNER B. Distribution of potassium, chlorine, and sulfur between solid and vapor phases during combustion of wood chips and coal[J]. Fuel Processing Technology, 2003, 17(1):18-28.
[10]	DEMIRBAS A. Potential applications of renewable energy sources, biomass combustion problems in boiler power systems and combustion related environmental issues[J]. Progress in Energy and Combustion Science, 2005, 31(2):171-192.
[11]	SONG J H, GU T, LI J, et al. Study on air preheater corrosion problem of CFB biomass directed-fired boiler in Zhanjiang biomass power plant[J]. Applied Mechanics and Materials, 2013, 291:294-299.
[12]	WHITTINGHAM G. The corrosive nature of combustion gases[J]. Anti-Corrosion Methods and Materials, 1954, 1(6):182-193.
[13]	MOSKOVITS P D. Low-temperature boiler corrosion and deposits-a literature review[J]. Industrial and Engineering Chemistry, 1959, 51(10):1305-1312.
[14]	HUIJBREGTS W M, LEFERINK R G. Latest advances in the understanding of acid low-temperature corrosion:corrosion and stress corrosion racking in combustion gas condensates[J]. Anti-Corrosion Methods and Materials, 2004, 51(3):173-188.
[15]	HAN H, HE Y L, TAO W Q. A numerical study of the deposition characteristics of sulfuric acid vapor on heat exchanger surfaces[J]. Chemical Engineering Science, 2013, 101:620-630.
[16]	LI Z M, SUN F Z, SHI Y T, et al. Experimental study and mechanism analysis on low temperature corrosion of coal fired boiler heating surface[J]. Applied Thermal Engineering, 2015, 80:355-361.
[17]	ZHAO Q X, ZHANG Z C, CHENG D N, et al. High temperature corrosion of water wall materials T23 and T24 in simulated furnace atmospheres[J]. Chinese Journal of Chemical Engineering, 2012, 20(4):814-822.
[18]	WANG Y G, ZHAO Q X, ZHANG Z X, et al. Mechanism research on coupling effect between dew point corrosion and ash deposition[J]. Applied Thermal Engineering, 2013, 54(1):102-110.
[19]	LIANG Z Y, ZHAO Q X, WANG Y G, et al. Coupling mechanism of dew point corrosion and viscous ash deposits[J]. Materials and Corrosion, 2014, 65(8):797-802.
[20]	NIU Y Q, TAN H Z, WANG X B, et al. Study on deposits on the surface, upstream, and downstream of bag filters in a 12 MW biomass-fired boiler[J]. Energy & Fuels, 2010, 24:2127-2132.
[21]	NIU Y Q, LIU Y Y, TAN H Z, et al. Origination and formation of NH4Cl in biomass-fired furnace[J]. Fuel Processing Technology, 2013, 106:262-266.
[22]	BJORKMAN E, STEOMBERG B. Release of chlorine from biomass at pyrolysis and gasification conditions[J]. Energy & Fuels, 1997, 11(5):1026-1032.
[23]	VAN-LITH S C, ALONSO-RAMIREZ V, JENSEN P A, et al. Release to the gas phase of inorganic elements during wood combustion(Ⅰ):Development and evaluation of quantification methods[J]. Energy & Fuels, 2006, 20(3):964-978.
[24]	锅炉机组热力计算标准方法[M]. 北京锅炉厂设计科, 译. 北京:机械工业出版社, 1976:62-65. Thermodynamic Calculation Standard for Boiler Unit[M]. Compile Group of Thermodynamic Calculation Standard for Boiler Unit, trans. Beijing:China Machine Press, 1976:62-65.

生物质锅炉积灰特性与露点腐蚀

Characteristics of ash deposit and dew point corrosion in biofuel boiler

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 24

相关文章 15

编辑推荐

Metrics

本文评价

[1]	程成, 段钟弟, 孙浩然, 胡海涛, 薛鸿祥. 表面微结构对析晶沉积特性影响的格子Boltzmann模拟[J]. 化工学报, 2023, 74(S1): 74-86.
[2]	康飞, 吕伟光, 巨锋, 孙峙. 废锂离子电池放电路径与评价研究[J]. 化工学报, 2023, 74(9): 3903-3911.
[3]	陈佳起, 赵万玉, 姚睿充, 侯道林, 董社英. 开心果壳基碳点的合成及其对Q235碳钢的缓蚀行为研究[J]. 化工学报, 2023, 74(8): 3446-3456.
[4]	李艳辉, 丁邵明, 白周央, 张一楠, 于智红, 邢利梅, 高鹏飞, 王永贞. 非常规服役超临界锅炉的微纳尺度腐蚀动力学模型建立及应用[J]. 化工学报, 2023, 74(6): 2436-2446.
[5]	黄磊, 孔令学, 白进, 李怀柱, 郭振兴, 白宗庆, 李平, 李文. 油页岩添加对准东高钠煤灰熔融行为影响的研究[J]. 化工学报, 2023, 74(5): 2123-2135.
[6]	时国华, 何林珅, 赵玺灵, 张世钢. 余热回收喷淋塔的烟气颗粒物脱除特性研究[J]. 化工学报, 2023, 74(4): 1735-1745.
[7]	王佳铭, 阮雪华, 贺高红. 面向不同工业二氧化碳分离体系的膜材料研究进展[J]. 化工学报, 2022, 73(8): 3417-3432.
[8]	张军, 胡升, 顾菁, 袁浩然, 陈勇. 甲醇体系电镀污泥衍生磁性多金属材料催化糠醛加氢转化[J]. 化工学报, 2022, 73(7): 2996-3006.
[9]	魏小兰, 戚文杰, 丁静, 陆建峰, 王维龙, 刘书乐. 氯化物熔盐中铬的价态对镍基合金腐蚀性的影响[J]. 化工学报, 2022, 73(7): 3182-3192.
[10]	季超, 刘炜, 漆虹. 基于空冷的疏水陶瓷膜冷凝器用于烟气脱湿过程强化的实验研究[J]. 化工学报, 2022, 73(5): 2174-2182.
[11]	张红锐, 张田, 隆曦孜, 李先宁. 光催化与微生物燃料电池耦合对Cu-EDTA的降解特性[J]. 化工学报, 2022, 73(5): 2149-2157.
[12]	王吴玉, 史玉竹, 严龙, 张兴华, 马隆龙, 张琦. 负载型Co基双功能催化剂上戊酸酯生物燃料的制备[J]. 化工学报, 2022, 73(2): 689-698.
[13]	罗俊仪, 吴石亮, 肖睿. 环烷烃与航空煤油掺混燃烧特性研究[J]. 化工学报, 2022, 73(2): 847-856.
[14]	苏国庆, 张建文, 李彦. 蝶阀后管线腐蚀发生与发展机制研究[J]. 化工学报, 2022, 73(12): 5504-5516.
[15]	顾鋆鋆, 黎睿, 吴兴熠, 汤显强, 胡艳平. 电动导排孔隙水对泥-水界面氮释放通量的控制效果研究[J]. 化工学报, 2022, 73(11): 5118-5127.