水稻秸秆与PVC塑料共气化过程中钾、钠、氯的迁移行为

杨天华; 丁一; 开兴平; 马静; 孙洋; 李润东

水稻秸秆与PVC塑料共气化过程中钾、钠、氯的迁移行为

沈阳航空航天大学能源与环境学院辽宁省清洁能源重点实验室, 辽宁沈阳 110136

基金项目: 国家重点基础研究发展规划（973计划，2011CB201500）；国家自然科学基金（51176130）；辽宁省自然科学基金联合基金（2013024019）。

详细信息

通讯作者:
杨天华，女，博士，教授，研究方向为生物质能利用及能源利用过程污染控制。Tel：024-89728632; Fax：024-89724558; E-mail：thyang@sau.edu.cn

中图分类号: TK6
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出版历程
- 收稿日期: 2013-10-17
- 修回日期: 2013-12-03
- 刊出日期: 2014-03-31

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

摘要

摘要: 采用固定床反应器，结合X射线衍射（XRD）表征和热力学计算研究了水稻秸秆与PVC塑料共气化过程中钾钠氯的迁移和状态变化。结果表明，混合物中氯的释放率与反应温度和PVC塑料的量（氯含量）有关。当反应温度为800~900 ℃时，PVC的量对混合物中氯元素释放率的影响最为显著；气化温度达900 ℃时，含PVC 20%（氯含量为11.5%）的水稻秸秆混合物中，氯元素的释放率较纯水稻上升了16.5%。与此同时，氯含量的增加也促进了钾钠在气相中的释放。气化温度为850 ℃时，当混合物中PVC比例大于20%（氯含量大于11.5%）时，氯对钾钠的气相析出有一定抑制作用；钾钠以KCl和NaCl的形式滞留在固相中，其含量随着混合物中PVC量的升高而降低。
- 水稻秸秆 /
- PVC /
- 共气化 /
- 氯 /
- 迁移 /
- 钾 /
- 钠
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

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参考文献(15)

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.)

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水稻秸秆与PVC塑料共气化过程中钾、钠、氯的迁移行为

通讯作者:
杨天华，女，博士，教授，研究方向为生物质能利用及能源利用过程污染控制。Tel：024-89728632; Fax：024-89724558; E-mail：thyang@sau.edu.cn

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

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水稻秸秆与PVC塑料共气化过程中钾、钠、氯的迁移行为

通讯作者: 杨天华，女，博士，教授，研究方向为生物质能利用及能源利用过程污染控制。Tel：024-89728632; Fax：024-89724558; E-mail：thyang@sau.edu.cn

计量

出版历程

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

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出版历程

目录

2023年《燃料化学学报（中英文）》评优结果公布！

通讯作者:
杨天华，女，博士，教授，研究方向为生物质能利用及能源利用过程污染控制。Tel：024-89728632; Fax：024-89724558; E-mail：thyang@sau.edu.cn