Effects of Ashing Temperature and Pyrolysis Atmosphere on Thermodynamic Properties of Sewage Sludge Ash

doi:10.7652/xjtuxb201905011

您当前的位置：

首页 >

文章列表页 >

Effects of Ashing Temperature and Pyrolysis Atmosphere on Thermodynamic Properties of Sewage Sludge Ash

更新时间：2025-07-09

- Effects of Ashing Temperature and Pyrolysis Atmosphere on Thermodynamic Properties of Sewage Sludge Ash
- Vol. 53, Issue 5, Pages: 73-81(2019)
- 作者机构：
  
  1. 大连理工大学能源与动力学院,辽宁,大连,116024
  2. 大连理工大学海洋能源利用与节能教育部重点实验室,辽宁,大连,116024
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201905011
  CLC： TK6
- Online First：10 May 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
Effects of Ashing Temperature and Pyrolysis Atmosphere on Thermodynamic Properties of Sewage Sludge Ash[J]. 2019, 53(5): 73-81.
DOI：

Effects of Ashing Temperature and Pyrolysis Atmosphere on Thermodynamic Properties of Sewage Sludge Ash[J]. 2019, 53(5): 73-81. DOI： 10.7652/xjtuxb201905011.

摘要

通过对污泥灰样微观形貌、化学组成、矿物质转化、热力学特性以及加热过程中潜在的物理化学变化进行分析和探讨

获得了灰化温度以及热解气氛等对污泥灰样理化特性及热力学特性的影响规律。实验结果表明

污泥灰样呈典型的多孔特性

在热处理过程中易发生变形、烧结和熔融。灰样的主要化学成分为SiO

、Al

、P

、CaO、Fe

和MgO

并以石英、硬石膏、白磷钙石、磷酸钙、磷酸铁钙、硅线石以及钙长石等矿物质形式存在。污泥灰样中的含磷矿物质及其转化过程对污泥灰矿物质演变和热力学特性影响显著

过量的磷酸盐离子会优先结合硬石膏中原本与硫酸根离子结合的钙离子

形成高熔点的白磷钙石和易分解的硫酸铝

从而导致硬石膏的分解并以SO

或SO

的形式释放S元素。同步热分析实验表明

污泥灰样A在空气气氛条件下经历了4个热力过程

分别为外在水分蒸发

白云母脱羟基和结晶水析出

白云石、方解石和白云母分解以及矿物质熔融和硬石膏分解

而污泥灰样B则表现为3个热力过程

分别为外在水分蒸发

以晶体转化、非晶体或无定形物质形成为主的微质量损失过程以及硬石膏分解和气相产物释放。灰样在氮气气氛中的热力学特性与空气气氛中相似

但总质量损失低于空气气氛中的总质量损失。

Abstract

Microscopic morphology

mineral evolution

thermodynamic properties and potential physicochemical changes of sewage sludge ashes were analyzed in order to investigate the effects of ashing temperatures and atmospheres on the physicochemical and thermodynamic properties of sewage sludge ashes. Results showed that sewage sludge ash has the typical porous structure

which is prone to deform and melt during thermal treatment. The major chemical compositions of the ash samples include Si

CaO

and MgO. The main crystalline phases in the ash samples are quartz

anhydrite

whitlochite

calcium aluminum phosphate

calcium iron phosphate

sillimanite and anorthite. Phosphorus in ash samples has an important effect on mineral evolution. An excess of phosphate may contend for calcium ions chemically combined with sulphate in the anhydrite

forming calcium phosphate with high melting point and readily decomposable aluminium sulphate

thereby causing decomposition of anhydrite and release of sulphur in the form of SO

or SO

. The thermal behavior of ash sample A in air atmosphere includes four thermal processes: evaporation of external moisture; dehydroxylation of muscovite and crystal water loss; decomposition of dolomite

calcite and muscovite; and mineral melting and decomposition of anhydrite. While ash sample B illustrates three thermal processes: evaporation of external moisture; crystal transformation or amorphous substance formation; and decomposition of anhydrite and gaseous product release. The thermal behaviors of the ash samples in N

atmosphere are similar with those in air atmosphere

while the weight loss in air atmosphere is more significant than in N

atmosphere.

关键词

Keywords

references

MULCHANDANI A, WESTERHOFF P. Recovery opportunitiesfor metals and energy from sewage sludges [J]. Bioresource Technology, 2018, 215: 215-226.

李复生, 高慧, 耿中峰, 等. 污泥热化学处理研究进展 [J]. 安全与环境学报, 2015, 15(2): 239-245.

LI Fusheng, GAO Hui, GENG Zhongfeng, et al. Progress in research of thermochemical treatment of sewage sludge [J]. Journal of Safety and Environment, 2015, 15(2): 239-245.

ZHANG Quanguo, HU Jianjun, LEE D J, et al. Sludge treatment: current research trends [J]. Bioresource Technology, 2017, 243: 1159-1172.

LYNN C J, DHIR R K, GHATAORA G S. Sewage sludge ash characteristics and potential for use in bricks, tiles and glass ceramics [J]. Water Science Technology, 2016, 74: 17-29.

KSEPKO E. Sewage sludge ash as an alternative low-cost oxygen carrier for chemical looping combustion [J]. Journal of Thermal Analysis and Calorimetry, 2014, 116: 1395-1407.

LI Rundong, ZHANG Ziheng, LI Yanlong, et al. Transformation of apatite phosphorus and non-apatite inorganic phosphorus during incineration of sewage sludge [J]. Chemosphere, 2015, 141: 57-61.

BOYCHEVA S, ZGUREVA D, VASSILEV V. Kinetic and thermodynamic studies on the thermal behaviour of fly ash from lignite coals [J]. Fuel, 2013, 108(2): 639-646.

WANG Liang, SKJEVRAK G, HUSTAD J E, et al. Sintering characteristics of sewage sludge ashes at elevated temperatures [J]. Fuel Process Technol, 2012, 96: 88-97.

MU Lin, CAI Jingcheng, CHEN Jianbiao, et al. Further study on ash deposits in a large-scale wastewater incineration plant: ash fusion characteristics and kinetics [J]. Energy Fuels, 2015, 29: 1812-1822.

MAGDZIARZ A, WILK M, GAJEK M, et al. Properties of ash generated during sewage sludge combustion: a multifaceted analysis [J]. Energy, 2016, 113: 85-94.

VOGEL C, KRÜGER O, ADAM C. Thermochemical treatment of sewage sludge ash with sodium additives under reducing conditions analyzed by thermogravimetry [J]. Journal of Thermal Analysis and Calorimetry, 2016, 123: 1045-1051.

尹洪超, 陈建标, 蔡景成, 等. 炼化废液与褐煤混合物共热解特性及动力学分析 [J]. 热科学与技术, 2016, 15(3): 227-235.

YIN Hongchao, CHEN Jianbiao, CAI Jingcheng, et al. Co-pyrolysis characteristics and kinetics analysis of refining and chemicals waste water, lignite and their blends [J]. Journal of Thermal Science and Technology, 2016, 15(3): 227-235.

LIU Bo, HE Qihui, JIANG Zihao, et al. Relationship between coal ash composition and ash fusion temperatures [J]. Fuel, 2013, 105: 293-300.

杨燕梅, 张海, 吴玉新, 等. 不同灰化温度下准东煤碱/碱土金属的析出特性 [J]. 燃烧科学与技术, 2015, 21(4): 297-300.

YANG Yanmei, ZHANG Hai, WU Yuxin, et al. Release of alkali/alkaline earth metal species in Zhundong coal at different ashing temperatures [J]. Journal of Combustion Science and Technology, 2015, 21(4): 297-300.

VASSILEV S V, BAXTER D, VASSILEVA C G. An overview of the behaviour of biomass during combustion: part II Ash fusion and ash formation mechanisms of biomass types [J]. Fuel, 2014, 117: 152-183.

ATIENZA-MARTÍNEZ M, GEA G, ARAUZO J, et al. Phosphorus recovery from sewage sludge char ash [J]. Biomass Bioenergy, 2014, 65: 42-50.

赵磊, 王长安, 朱晨钊, 等. 灰化方式和温度对新疆高碱煤灰理化特性的影响 [J]. 西安交通大学学报, 2018, 52(8): 139-145.

ZHAO Lei, WANG Chang'an, ZHU Chenzhao, et al. Effects of ashing method and temperature on the ash physicochemical properties of high-alkali coals in Xinjiang [J]. Journal of Xi'an Jiaotong University, 2018, 52(8): 139-145.

FANG Xiang, JIA Li. Experimental study on ash fusion characteristics of biomass [J]. Bioresouce Technology, 2012, 104: 769-774.

ELLED A L, ÅMAND L E, LECKNER B, et al. Influence of phosphorus on sulphur capture during co-firing of sewage sludge with wood or bark in a fluidised bed [J]. Fuel, 2006, 85: 1671-1678.

姚锡文, 许开立. 灰化温度及热解气氛对生物质灰灼烧失重特性的影响 [J]. 农业工程学报, 2015, 31(24): 250-255.

YAO Xiwen, XU Kaili. Influence of ashing temperature and pyrolysis atmosphere on weight loss properties of biomass ash obtained by combustion [J]. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(24): 250-255.

杨启容,邹瀚森,魏鑫,等.天然橡胶热解产物反应机理研究.2019,53(1):114-121.[doi:10.7652/xjtuxb201901015]

要雅姝,温渡,周屈兰,等.高温水蒸气氛围中煤燃烧特性研究.2018,52(12):84-92.[doi:10.7652/xjtuxb201812013]

陶子宸,王长安,王鹏乾,等.半焦富氧燃烧扩散效应研究.2018,52(9):155-161.[doi:10.7652/xjtuxb201809021]

李艳,谭厚章,王学斌,等.生物质高温热解气、液、固三相产物及碳烟生成特性.2018,52(1):61-68.[doi:10.7652/xjtuxb201801010]

田丽萍,徐晗,龚小炜,等.多端口进料微型管式重整制氢反应器性能研究.2017,51(11):29-35.[doi:10.7652/xjtuxb 201711005]

王长安,Justin K.WATSON,Enette LOUW,等.耦合堆垛与孔径分布的高碱金属煤焦分子建模方法.2017,51(9):1-10.[doi:10.7652/xjtuxb201709001]

范鲁艳,汪安东,曲大为,等.重型柴油机固态铵选择性催化还原系统铵盐热解及动力学特征研究.2017,51(9):44-53.[doi:10.7652/xjtuxb201709007]

马志豪,贾义,李智博,等.单滴燃料高压着火与燃烧特性的试验研究.2017,51(5):95-101.[doi:10.7652/xjtuxb201705 014]

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on Operation and Thermodynamic Characteristics of Electric Vehicle Direct/Liquid Cooling Systems for Fast Charging and Dynamic Driving Conditions

Diffusion Characteristics and Influencing Factors in Case of Hydrogen Leakage from Fuel Cell Vehicles Running in Tunnels

A Fast Calculation Method for Thermal Flow Fields in Transformer Windings Based on PI-DeepONet

Knowledge Graph Representation Learning Driven by Semantic Discrimination and Subgraph Integration

Energy Efficiency Optimization of the Cryogenic Air Separation Process for Electronic-Grade Ultra Pure Nitrogen

Related Author

CHEN Bin

LIANG Kunfeng

ZONG Shuo

CHEN Yuanhao

YIN Xiang

CAO Feng

Related Institution

School of Energy and Power Engineering, Xi’an Jiaotong University

Yuxin Automobile Thermal Management Technology Co., Ltd.

College of Vehicle and Transport Engineering, Henan University of Science and Technology

⁰