Transformation of K, Na and Cl elements in the co-gasification of rice straw and PVC

YANG Tian-hua; DING Yi; KAI Xing-ping; MA Jing; SUN Yang; LI Run-dong

Volume 42 Issue 03

Mar. 2014

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(03): 336-342

YANG Tian-hua, DING Yi, KAI Xing-ping, MA Jing, SUN Yang, LI Run-dong. Transformation of K, Na and Cl elements in the co-gasification of rice straw and PVC[J]. Journal of Fuel Chemistry and Technology, 2014, 42(03): 336-342.

Citation:

YANG Tian-hua, DING Yi, KAI Xing-ping, MA Jing, SUN Yang, LI Run-dong. Transformation of K, Na and Cl elements in the co-gasification of rice straw and PVC[J]. Journal of Fuel Chemistry and Technology, 2014, 42(03): 336-342.

Citation:

PDF( 3040 KB)

Transformation of K, Na and Cl elements in the co-gasification of rice straw and PVC

College of Energy and Environment, Shenyang Aerospace University, Key Laboratory of Clean Energy, Liaoning Province, Shenyang 110136, China

Received Date: 2013-10-17
Rev Recd Date: 2013-12-03
Publish Date: 2014-03-31

Abstract

Abstract

The co-gasification of rice straw with PVC was carried out in a fixed bed reactor; the transformation of K, Na and Cl elements was investigated through X-ray diffraction (XRD) and thermodynamic calculation. The results indicated that the release of chlorine is related to the operation temperature and PVC proportion in the co-gasification of rice straw and PVC. The content of PVC in the blend plays an important role in the release of Cl, especially at 800~900 ℃; the amount of Cl released in gasification of the blend with 20% PVC (11.5% Cl) is increased by 16.5%, compared with that of pure rice straw at 900 ℃. Meanwhile, the increase of Cl content in the blend also prompts the release of K and Na. When the fraction of PVC is higher than 20% (> 11.5% Cl), the presence of Cl can restrain the release of K and Na at 850 ℃, which are retained in the ash as KCl and NaCl during the co-gasification of rice straw and PVC at 850 ℃; the content of which decreased with the increase of PVC countent in the blend.
- rice straw,
- PVC,
- co-gasification,
- chlorine,
- transformation,
- potassium,
- sodium

FullText(HTML)

References(15)

References

BAXTER L. Biomass-coal co-combustion: Opportunity for affordable renewable energy[J]. Fuel, 2005, 84(10): 1295-1302.

NUSSBAUMER T. Combustion and co-combustion of biomass: Fundamentals, technologies, and primary measures for emission reduction[J]. Energy Fuels, 2003, 17(6): 1510-1521.

GARCIA-BACAICOA P, MASTRAL J F, CEAMANOS J, BERRUECO C, SERRANO S. Gasification of biomass/high density polyethylene mixtures in a downdraft gasifier[J]. Bioresour Technol, 2008, 99(13): 5485-5491.

AHMED I I, NIPATTUMMAKUL N, GUPTA A K. Characteristics of syngas from co-gasification of polyethylene and woodchips applied[J]. Energy, 2011, 88(1): 165-174.

沈敏强, 吴江, 潘卫国, 何平, 王文欢, 任建兴, 冷雪峰. 生物质与燃煤烟气汞反应机理及其数值模拟[J]. 上海电力学院学报, 2009, 25(5): 449-452. (SHEN Min-qiang, WU Jiang, PAN Wei-guo, HE Ping, WANG Wen-huan, REN Jian-xing, LENG Xue-feng. Numericalsimulation study on the interaction between biomass andmercury in coal-fired derived flue gas[J]. Journal of Shanghai University of Electric Power, 2009, 25(5): 449-452.)

CHOU M I M, LYTLE J M, KUNG S C, HO K K. Corrosivities in a pilot-scale combustor of a British and two Illinois coals with varying chlorine contents[J]. Fuel Process Technol, 2000, 64(1/3): 167-176.

VASSILEV S V, ESKENAZY G M, VASSILEVA C G. Contents, modes of occurrence and behaviour of chlorine and bromine in combustion wastes from coal-fired power stations[J]. Fuel, 2000, 79 (8): 923-938.

FURIMSKY E. Characterization of trace element emissions from coal combustion by equilibrium calculations[J]. Fuel Process Technol, 2000, 63(1): 29-44.

KNUDSEN J N, JENSEN P A, DAM-JOHANSEN K. Transformation and release to the gas phase of Cl, K, and S during combustion of annual biomass[J]. Energy Fuels, 2004, 18(5): 1385-1399.

陈安和, 杨学民, 林伟刚. 生物质热解和气化过程Cl及碱金属逸出行为的化学热力学平衡分析[J]. 燃料化学学报, 2007, 35(5): 539-547. (CHEN An-he, YANG Xue-min, LIN Wei-gang. Release characteristics of chlorine and alkali metals during pyrolysis and gasification of biomass by thermodynamical equilibrium analysis[J]. Journal of Fuel Chemistry and Technology, 2007, 35(5): 539-547.)

KNUDSEN J N, JENSEN P A, DAM-JOHANSEN K. Transformation and release to the gas phase of Cl, K, and S during combustion of annual biomass[J]. Energy Fuels, 2004, 18(5): 1385-1399.

余春江, 骆仲泱, 张文楠, 方梦祥, 周劲松, 岑可法. 碱金属及相关无机元素在生物质热解中的转化析出[J]. 燃料化学学报, 2000, 28(5): 420-424. (YU Chun-jiang, LUO Zhong-yang, ZHANG Wen-nan, FANG Meng-xiang, ZHOU Jin-song, CEN Ke-fa. Inoganic material emission during biomass pyrolysis[J]. Journal of Fuel Chemistry and Technology, 2000, 28(5): 420-424.)

JIANG L, HU S, XIANG J, SU S, SUN L S, XU K, YAO Y. Release characteristics of alkali and alkaline earth metallic species during biomass pyrolysis and steam gasification process[J]. Bioresour Technol, 2012, 116: 278-284.

杜胜磊, 陈汉平, 杨海平, 胥广富, 王贤华, 张世红. 生物质热解过程中F和Cl 的迁徙行为研究[J]. 中国电机工程学报, 2010, 30(14): 115-119. (DU Sheng-lei, CHEN Han-ping, YANG Hai-ping, XU Guang-fu, WANG Xian-hua, ZHANG Shi-hong. Transformation behavior of F and Cl during biomass pyrolysis[J]. Proceedings of the CSEE, 2010, 30(14): 115-119.)

唐超, 周茜, 王玉忠, 郑丽, 陈泽芳. PP和PVC混合塑料的降解及脱氯研究[J].燃料化学学报, 2003, 31(2): 139-143. (TANG Chao, ZHOU Qian, WANG Yu-zhong, ZHENG Li, CHEN Ze-fang. Thermal and catalytic degradation ofPP/PVC mixture and dechlorination of the derived oil[J]. Journal of Fuel Chemistry and Technology, 2003, 31(2): 139-143.)

Relative Articles

Supplements(0)

Cited By

Proportional views