Effect of phosphorus on ash fusion characteristics and mineral transformation during co-combustion of sewage sludge and coal

WEI Li-hong; LIANG Fa-guang; FANG Fan; MA Ting-ting; YANG Tian-hua

Volume 47 Issue 2

Feb. 2019

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(2): 129-137

WEI Li-hong, LIANG Fa-guang, FANG Fan, MA Ting-ting, YANG Tian-hua. Effect of phosphorus on ash fusion characteristics and mineral transformation during co-combustion of sewage sludge and coal[J]. Journal of Fuel Chemistry and Technology, 2019, 47(2): 129-137.

Citation:

WEI Li-hong, LIANG Fa-guang, FANG Fan, MA Ting-ting, YANG Tian-hua. Effect of phosphorus on ash fusion characteristics and mineral transformation during co-combustion of sewage sludge and coal[J]. Journal of Fuel Chemistry and Technology, 2019, 47(2): 129-137.

Citation:

WEI Li-hong, LIANG Fa-guang, FANG Fan, MA Ting-ting, YANG Tian-hua. Effect of phosphorus on ash fusion characteristics and mineral transformation during co-combustion of sewage sludge and coal[J]. Journal of Fuel Chemistry and Technology, 2019, 47(2): 129-137.

PDF( 2573 KB)

Effect of phosphorus on ash fusion characteristics and mineral transformation during co-combustion of sewage sludge and coal

1.
College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China
2.
Xi'an Thermal Power Research Institute co., LTD, Xian 710054, China
3.
GD power Development co., LTD Datong Second Power Plant/GD Power Datong Power Generation co., LTD, Datong 037043, China

Funds:

the National Natural Science Foundation of China 51576135

the Fund Project of the Education Department of Liaoning Province L201621

More Information

Corresponding author: WEI Li-hong, Tel: 024-89728508, E-mail: weilihong@sau.edu.cn
Received Date: 2018-09-05
Rev Recd Date: 2018-12-24

Available Online: 2021-01-23

Publish Date: 2019-02-10

Abstract

Abstract

The influence of inorganic phosphorus on ash fusion characteristics of sewage sludge and coal were investigated by ash fusion temperature (AFT) detector and X-ray fluorescence (XRF), and the transformation of containing phosphate minerals of blended ashes with different temperatures between crystal and amorphous were explored using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). For the ash sample with high contents of Al₂O₃, which has higher AFT, raising content of phosphorus significantly results in a reduced ash fusion point, in particular it is lowered by 126℃ at 0-4% P₂O₅ content. But it has little effect on ash with high alkaline content. Aluminum phosphate (AlPO₄) crystals is the major phosphor containing minerals in low temperature ashes, witch react with calcium minerals (CaSO₄) and hematite (Fe₂O₃) to form Ca₃(PO₄)₂ crystal and (Fe₂O₃)_0.252(P₂O₅)_0.748 glass phase along with increasing temperature. Meanwhile, (Fe₂O₃)_0.252(P₂O₅)_0.748 in glass phase increases with an increase in phosphorus content, which may be the primary cause of AFT decreasing.
- ash fusion temperature,
- inorganic phosphorus,
- coal,
- sewage sludge

FullText(HTML)

References(22)

References

[1]	WANG K, ZHENG Y, ZHU X, BREWER C E, BROWN R C. Ex-situ catalytic pyrolysis of wastewater sewage sludge-a micro-pyrolysis study[J]. Biotechnol Technol, 2017, 232:229-234. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=3f0519a32a7b61d888d0bb09d87928fe
[2]	ZHANG Q G, HU J J, LEE DUU-JONG, CHANG YINGJU, LEE YU-JEN. Sludge treatment:Current research trends[J]. Biotechnol Technol, 2017, 243:1159-1172. http://d.old.wanfangdata.com.cn/NSTLQK/NSTL_QKJJ027225986/
[3]	魏砾宏, 马婷婷, 杨天华, 李润东.污泥/煤混烧灰的结渣特性及矿物质演变规律研究[J].中国电机工程学报, 2015, 35(18):4697-4702. http://www.cnki.com.cn/Article/CJFDTotal-ZGDC201518016.htm WEI Li-hong, MA Ting-ting, YANG Tian-hua, LI Run-dong. Slagging characteristics and minerals conversion of co-firing Ash of coal and sludge at high temperature[J]. Proc CSEE, 2015, 35(18):4697-4702. http://www.cnki.com.cn/Article/CJFDTotal-ZGDC201518016.htm
[4]	ZHANG Q, LIU H F, QIAN Y P, XU M H, LI W F, XU J L. The influence of phosphorus on ash fusion temperature of sludge and coal[J]. Fuel Process Technol, 2013, 110(41):218-226. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=441e84ba85607837b27a7e76dd1f98bb
[5]	LI W D, LI M, LI W F, LIU H F. Study on the ash fusion temperatures of coal and sewage sludge mixtures[J]. Fuel, 2010, 89(7):1566-1572. doi: 10.1016/j.fuel.2009.08.039
[6]	李明, 李伟东, 李伟锋, 刘海峰.污泥对神府煤灰熔点的影响[J].燃料化学学报, 2009, 37(4):416-420. doi: 10.3969/j.issn.0253-2409.2009.04.006 LI Ming, LI Wei-dong, LI Wei-feng, LIU Hai-feng. Influence of sewage sludge addition on Shenfu coal ash fusion temperatures[J]. J Fuel Chem Technol, 2009, 37(4):416-420. doi: 10.3969/j.issn.0253-2409.2009.04.006
[7]	XU H, ZHANG H, SHAO L, HE P. Fraction distributions of phosphorus in sewage sludge and sludge ash[J]. Waste Biomass Valor, 2012, 3(3):355-361. doi: 10.1007/s12649-011-9103-5
[8]	FOLGUERAS M B, ALONSO M, FOLGUERAS J R. Modification of lignite ash fusion temperatures by the addition of different types of sewage sludge[J]. Fuel Process Technol, 2015, 137(131):348-355. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=b242b25fb36470d66c986a9a9da45d4e
[9]	CUI H, NINOMIYA Y, MASUI M, MIZUKOSHI H, SAKANO T, KANAOKA C. Fundamental behaviors in combustion of raw sewage sludge[J]. Energy Fuels, 2005, 20(1):77-83. http://www.onacademic.com/detail/journal_1000036638813810_e4ab.html
[10]	ZHANG L, ITO M, SATO A, NINOMIYA Y, SAKANO T, KANAOKA C, MASUI M. Combustibility of dried sewage sludge and its mineral transformation at different oxygen content in drop tube furnace[J]. Fuel Process Technol, 2004, 85(8/10):983-1011. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=a81998d624b865e17c4d6ca1d01190c1
[11]	OHBUCHI A, SAKAMOTO J, KITANO M, NAKAMURA T. X-ray fluorescence analysis of sludge ash from sewage disposal plant[J]. X-Ray Spectr, 2008, 37(5):544-550. doi: 10.1002/xrs.v37:5
[12]	VAN DYK J C, BENSON S A, LAUMB M L, WAANDERS B. Coal and coal ash characteristics to understand mineral transformations and slag formation[J]. Fuel, 2009, 88(6):1057-1063. doi: 10.1016/j.fuel.2008.11.034
[13]	TOMASZ K, MARCO M, MICHAEL I, WEBER R. Investigation of ash deposit formation during co-firing of coal with sewage sludge, saw-dust and refuse derived fuel[J]. Fuel, 2008, 87(12):2824-2837. doi: 10.1016/j.fuel.2008.01.024
[14]	WANG L, SKJEVRAK G, HUSTAD J E, GRØNLI M G. Sintering characteristics of sewage sludge ashes at elevated temperatures[J]. Fuel Process Technol, 2012, 96:88-97. doi: 10.1016/j.fuproc.2011.12.022
[15]	FOLGUERAS M, DÍAZ R, XIBERTA J, GARCÍA M, PIS J. Influence of sewage sludge addition on coal ash fusion temperatures[J]. Energy Fuels, 2005, 19(6):2562-2570. doi: 10.1021/ef058005a
[16]	魏砾宏, 马婷婷, 李润东, 杨天华, 李延吉, 文丽娜.灰中酸性成分对灰熔融温度的影响[J].燃料化学学报, 2014, 10(24):1205-1211. http://manu60.magtech.com.cn/rlhxxb/CN/abstract/abstract18504.shtml WEI Li-hong, MA Ting-ting, LI Run-dong, YANG Tian-hua, LI Yan-ji, WEN Li-na. Effect of acidic compositions on ash fusion temperatures[J]. J Fuel Chem Technol, 2014, 10(24):1205-1211. http://manu60.magtech.com.cn/rlhxxb/CN/abstract/abstract18504.shtml
[17]	CIESLIK B, KONIECZKA P. A review of phosphorus recovery methods at various steps of wastewater treatment and sewage sludge management. The concept of "no solid waste generation" and analytical methods[J]. J Clean Prod, 2017, 142:1728-1740. doi: 10.1016/j.jclepro.2016.11.116
[18]	FANG L, LI J, DONATELLO S, CHEESEMAN C R, WANG Q, POON C S, TSANG D C W. Recovery of phosphorus from incinerated sewage sludge ash by combined two-step extraction and selective precipitation[J]. Biochem Eng J, 2018, 348:74-83. http://www.sciencedirect.com/science/article/pii/S1385894718307757
[19]	VILLEN GUZMAN M, GUEDES P, COUTO N, OTTOSEN L M, RIBEIRO A B, RODRIGUEZ MAROTO J M. Electrodialytic phosphorus recovery from sewage sludge ash under kinetic control[J]. Electrochim Acta, 2018, 287:49-59. doi: 10.1016/j.electacta.2018.08.032
[20]	孟详东, 黄群星, 严建华, 郜华萍.磷在污泥热解过程中的迁移转化[J].化工学报, 2018, 69(7):3208-3215. http://d.old.wanfangdata.com.cn/Periodical/hgxb201807046 MENG Xiang-dong, HUANG Qun-xing, YAN Jian-hua, GAO Hua-ping. Migration and transformation of phosphorus during pyrolysis process of sewage sludge[J]. CIESC J, 2018, 69(7):3208-3215. http://d.old.wanfangdata.com.cn/Periodical/hgxb201807046
[21]	NINOMIYA Y, ZHANG L, SAKANO T, KANAOKA C H, MASUI M. Transformation of mineral and emission of particulate matter during co-combustion of coal with sewage sludge[J]. Fuel, 2004, 83(6):751-764. doi: 10.1016/j.fuel.2003.09.022
[22]	殷立宝, 邓昌亚, 张成, 方庆艳, 徐齐胜, 陈刚.工业、生活污泥与煤混合燃烧的灰熔特性研究[J].燃料化学学报, 2014, 42(9):1068-1076. doi: 10.3969/j.issn.0253-2409.2014.09.007 YIN Li-bao, DENG Chang-ya, ZHANG Cheng, FANG Qing-yan, XU Qi-sheng, CHEN Gang. Fusion characteristics in co-combustion of coal with industrial and municipal sludge[J]. J Fuel Chem Technol, 2014, 42(9):1068-1076. doi: 10.3969/j.issn.0253-2409.2014.09.007