Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shale
The oil shale from Dacheng mine of Huadian is selected for pyrolysis under 900℃ by using TG-FTIR.Pyrolysis characteristics of oil shale at three different heating rate and formation rules of CO,CO<sub>2</sub> and aliphatic hydrocarbon are investigated.Piecewise fitting is used during the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2018-04-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/article/id/138 |
| _version_ | 1811307330380234752 |
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| author | Liang Kun Liang Jie Shi Longxi Ma Gaofeng Wang Li Wang Jun Liang Peng |
| author_facet | Liang Kun Liang Jie Shi Longxi Ma Gaofeng Wang Li Wang Jun Liang Peng |
| author_sort | Liang Kun |
| collection | DOAJ |
| description | The oil shale from Dacheng mine of Huadian is selected for pyrolysis under 900℃ by using TG-FTIR.Pyrolysis characteristics of oil shale at three different heating rate and formation rules of CO,CO<sub>2</sub> and aliphatic hydrocarbon are investigated.Piecewise fitting is used during the process of pyrolysis kinetics of oil shale.Pyrolysis kinetic parameters of oil shale at different stages are solved by first order model and Doly integral method.The results show that initial temperature,peak temperature and final temperature of oil shale in pyrolysis all shift to high temperature region with the increase of heating rate.The temperature range of devolatilization becomes wider and peak value of mass loss increases.The increase of heating rate results in the accelerated degradation of the carbonyl compounds.The earlier releasing of CO and great numbers of CO<sub>2</sub> generated are caused by the rapid heating-up,while the release strength of aliphatic hydrocarbon shows an increasing trend.The pyrolysis of oil shale is divided into three stages:in stage I,activation energy is low and increases with the increase of heating rate.Activation energy in stage II is higher and in stage Ⅲ is middle,which reaches its maximum at 20℃/min. |
| first_indexed | 2024-04-13T09:02:43Z |
| format | Article |
| id | doaj.art-c847465a57d3427b8a3cd3e06c2a8f60 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-13T09:02:43Z |
| publishDate | 2018-04-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-c847465a57d3427b8a3cd3e06c2a8f602022-12-22T02:53:07ZengEmergency Management Press矿业科学学报2096-21932018-04-013219420010.19606/j.cnki.jmst.2018.02.01220180212Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shaleLiang Kun0Liang Jie1Shi Longxi2Ma Gaofeng3Wang Li4Wang Jun5Liang Peng6School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaCCDC Downhole Service Company, CNPC, Chengdu Sichuan 610051, ChinaThe oil shale from Dacheng mine of Huadian is selected for pyrolysis under 900℃ by using TG-FTIR.Pyrolysis characteristics of oil shale at three different heating rate and formation rules of CO,CO<sub>2</sub> and aliphatic hydrocarbon are investigated.Piecewise fitting is used during the process of pyrolysis kinetics of oil shale.Pyrolysis kinetic parameters of oil shale at different stages are solved by first order model and Doly integral method.The results show that initial temperature,peak temperature and final temperature of oil shale in pyrolysis all shift to high temperature region with the increase of heating rate.The temperature range of devolatilization becomes wider and peak value of mass loss increases.The increase of heating rate results in the accelerated degradation of the carbonyl compounds.The earlier releasing of CO and great numbers of CO<sub>2</sub> generated are caused by the rapid heating-up,while the release strength of aliphatic hydrocarbon shows an increasing trend.The pyrolysis of oil shale is divided into three stages:in stage I,activation energy is low and increases with the increase of heating rate.Activation energy in stage II is higher and in stage Ⅲ is middle,which reaches its maximum at 20℃/min.http://kykxxb.cumtb.edu.cn/article/id/138oil shaleheating ratepyrolysis characteristicspyrolysis productkinetics |
| spellingShingle | Liang Kun Liang Jie Shi Longxi Ma Gaofeng Wang Li Wang Jun Liang Peng Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shale 矿业科学学报 oil shale heating rate pyrolysis characteristics pyrolysis product kinetics |
| title | Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shale |
| title_full | Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shale |
| title_fullStr | Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shale |
| title_full_unstemmed | Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shale |
| title_short | Effects of heating rate on the pyrolysis characteristicsand kinetics of Huadian oil shale |
| title_sort | effects of heating rate on the pyrolysis characteristicsand kinetics of huadian oil shale |
| topic | oil shale heating rate pyrolysis characteristics pyrolysis product kinetics |
| url | http://kykxxb.cumtb.edu.cn/article/id/138 |
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