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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(3): 336-342. shu

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

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

  • Corresponding author: YANG Tian-hua, 
  • Received Date: 17 October 2013
    Available Online: 3 December 2013

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

  • 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.
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