Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysis
Low-rank coal (LRC) can be converted to high value-added naphthalene and its alkylated derivatives through low-temperature catalytic pyrolysis. In this paper, the catalytic pyrolysis of Beisu LRC in a fixed-bed at low temperature was investigated. And the catalytic effects of HZSM-5, low-temperature...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2020-01-01
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| Series: | Carbon Resources Conversion |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2588913320300028 |
| _version_ | 1818446710277406720 |
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| author | Tao Liu Xiuli Zhang Yongzhuo Liu Lingyun Wang Qingjie Guo |
| author_facet | Tao Liu Xiuli Zhang Yongzhuo Liu Lingyun Wang Qingjie Guo |
| author_sort | Tao Liu |
| collection | DOAJ |
| description | Low-rank coal (LRC) can be converted to high value-added naphthalene and its alkylated derivatives through low-temperature catalytic pyrolysis. In this paper, the catalytic pyrolysis of Beisu LRC in a fixed-bed at low temperature was investigated. And the catalytic effects of HZSM-5, low-temperature carbocoal (LtC), and LtC-HZSM-5 on the content and yield of naphthalene oil were examined. The results showed that the generation of naphthalene oil in low-temperature LRC pyrolysis (LT-LP) process could be improved when LtC (prepared at 550 °C) or HZSM-5 was individually used as a catalyst. Compared with sole pyrolysis of raw LRC, the addition of the LtC-HZSM-5 catalyst increased the content of naphthalene oil from 11.19 wt.% to 31.49 wt%. And the yield of naphthalene oil was increased from 1.07 wt% to 5.31 wt%. The reactions of micromolecular hydrogen-containing radicals (·MHCR) were optimized by LtC. ·MHCR could be captured in relatively low-temperature region (200–400 °C) and released at high temperature by LtC. The generation of phenolics was inhibited by HZSM-5. As a result, the naphthalene oil-rich tar was obtained through low-temperature LtC-HZSM-5 catalytic pyrolysis of Beisu LRC. |
| first_indexed | 2024-12-14T19:52:03Z |
| format | Article |
| id | doaj.art-7bc78954e7c14c2ea468061f8ef862b0 |
| institution | Directory Open Access Journal |
| issn | 2588-9133 |
| language | English |
| last_indexed | 2024-12-14T19:52:03Z |
| publishDate | 2020-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Carbon Resources Conversion |
| spelling | doaj.art-7bc78954e7c14c2ea468061f8ef862b02022-12-21T22:49:23ZengKeAi Communications Co., Ltd.Carbon Resources Conversion2588-91332020-01-0136775Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysisTao Liu0Xiuli Zhang1Yongzhuo Liu2Lingyun Wang3Qingjie Guo4Key Laboratory of Clean Chemical Engineering of Colleges and Universities of Shandong Province, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of ChinaKey Laboratory of Clean Chemical Engineering of Colleges and Universities of Shandong Province, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of ChinaKey Laboratory of Clean Chemical Engineering of Colleges and Universities of Shandong Province, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of ChinaKey Laboratory of Clean Chemical Engineering of Colleges and Universities of Shandong Province, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of ChinaKey Laboratory of Clean Chemical Engineering of Colleges and Universities of Shandong Province, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of China; State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, People’s Republic of China; Corresponding author at: Key Laboratory of Clean Chemical Engineering of Colleges and Universities of Shandong Province, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of China.Low-rank coal (LRC) can be converted to high value-added naphthalene and its alkylated derivatives through low-temperature catalytic pyrolysis. In this paper, the catalytic pyrolysis of Beisu LRC in a fixed-bed at low temperature was investigated. And the catalytic effects of HZSM-5, low-temperature carbocoal (LtC), and LtC-HZSM-5 on the content and yield of naphthalene oil were examined. The results showed that the generation of naphthalene oil in low-temperature LRC pyrolysis (LT-LP) process could be improved when LtC (prepared at 550 °C) or HZSM-5 was individually used as a catalyst. Compared with sole pyrolysis of raw LRC, the addition of the LtC-HZSM-5 catalyst increased the content of naphthalene oil from 11.19 wt.% to 31.49 wt%. And the yield of naphthalene oil was increased from 1.07 wt% to 5.31 wt%. The reactions of micromolecular hydrogen-containing radicals (·MHCR) were optimized by LtC. ·MHCR could be captured in relatively low-temperature region (200–400 °C) and released at high temperature by LtC. The generation of phenolics was inhibited by HZSM-5. As a result, the naphthalene oil-rich tar was obtained through low-temperature LtC-HZSM-5 catalytic pyrolysis of Beisu LRC.http://www.sciencedirect.com/science/article/pii/S2588913320300028Naphthalene oilLow-temperature carbocoalHZSM-5Low-rank coalCatalytic pyrolysis |
| spellingShingle | Tao Liu Xiuli Zhang Yongzhuo Liu Lingyun Wang Qingjie Guo Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysis Carbon Resources Conversion Naphthalene oil Low-temperature carbocoal HZSM-5 Low-rank coal Catalytic pyrolysis |
| title | Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysis |
| title_full | Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysis |
| title_fullStr | Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysis |
| title_full_unstemmed | Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysis |
| title_short | Directional preparation of naphthalene oil-rich tar from Beisu low-rank coal by low-temperature catalytic pyrolysis |
| title_sort | directional preparation of naphthalene oil rich tar from beisu low rank coal by low temperature catalytic pyrolysis |
| topic | Naphthalene oil Low-temperature carbocoal HZSM-5 Low-rank coal Catalytic pyrolysis |
| url | http://www.sciencedirect.com/science/article/pii/S2588913320300028 |
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