Citation: LIN Jun-heng, YANG Wen-shen, YIN Xiu-li, WU Chuang-zhi. Release of HCl and H₂S during pyrolysis of aged refuse derived-fuels[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(2): 152-160. shu

Release of HCl and H₂S during pyrolysis of aged refuse derived-fuels

1.
Key Laboratory of Renewable Energy, CAS, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: YANG Wen-shen, yangws@ms.giec.ac.cn
Received Date: 19 November 2017
Revised Date: 9 January 2018

Fund Project: The project was supported by the National Key R&D Program of China (2016YFE0203300), the Guangdong Natural Science Foundation (2017B030308002) and the Science and Technology Program of Guangzhou (201707010242)the National Key R&D Program of China 2016YFE0203300the Guangdong Natural Science Foundation 2017B030308002the Science and Technology Program of Guangzhou 201707010242

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Based on the horizontal tubular reactor-chemical absorption together with TG-FTIR-MS methods, release characteristics of corrosive gases, viz., HCl and H₂S, during pyrolysis of refuse derived-fuels were investigated. The effects of pyrolysis temperature and pyrolysis type on their release behaviors for the aged (ARDF) and normal (NRDF) categories were compared. Meanwhile, the occurrence properties of corrosive elements (Cl and S) in solid products were also explored. The results indicate that the release of each corrosive gas has similar characteristic temperature range for slow pyrolysis of two categories. The release of HCl occurs at 200-400 and 420-500℃, respectively, while the emission of H₂S is observed at 230-370 and 380-670℃, respectively. In addition, ARDF has a lower emission amounts of both HCl and H₂S compared to NRDF under this condition. With regard to fast pyrolysis, the release of corrosive gases show different regularities, which largely depends on pyrolysis temperature. With increasing temperature, the emission of HCl and H₂S present a nonlinear and an increasing trends, respectively, reaching peak values at 850℃; It is 48.8% (ARDF) and 29.4% (NRDF) for HCl, 6.8% (ARDF) and 44.6% (NRDF) for H₂S. Subsequently, due to the distinctive release characteristics of corrosive gases, the occurrence of corrosive elements in solid phase relating to temperature differs in two categories. The retained amounts of Cl and S reach to 59.4% (450℃) and 84.3% (750℃) for ARDF, respectively. But for NRDF, that is 36.7% (850℃) and 15.2% (650℃), repetitively. It can be inferred that ARDF has the more stable corrosive elements difficult to be released into gases, which could provide some guidelines on thermal utilization of refuse derived-fuels.
- HCl,
- H₂S,
- aged refuse derived-fuels,
- normal refuse derived-fuels,
- pyrolysis
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沈阳化工大学材料科学与工程学院沈阳 110142

Release of HCl and H2S during pyrolysis of aged refuse derived-fuels

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通讯作者: 陈斌, bchen63@163.com

Release of HCl and H₂S during pyrolysis of aged refuse derived-fuels