Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shales
Step-wise acid washing was applied to eliminate the indigenous minerals of Huadian and Balikun oil shales.The pyrolysis experiments of raw and demineralized oil shales were carried out by using a thermogravimetric analyzer.The effects of demineralization on pyrolysis were investigated by comparing t...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Emergency Management Press
2018-06-01
|
| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/article/id/150 |
| _version_ | 1797983692083167232 |
|---|---|
| author | Chang Zhibing Chu Mo Zhang Chao Bai Shuxia Lin Hao Ma Liangbo |
| author_facet | Chang Zhibing Chu Mo Zhang Chao Bai Shuxia Lin Hao Ma Liangbo |
| author_sort | Chang Zhibing |
| collection | DOAJ |
| description | Step-wise acid washing was applied to eliminate the indigenous minerals of Huadian and Balikun oil shales.The pyrolysis experiments of raw and demineralized oil shales were carried out by using a thermogravimetric analyzer.The effects of demineralization on pyrolysis were investigated by comparing the thermal weight loss characteristics and kinetic parameters of different oil shale samples.Results showed that after removal of carbonate minerals，the onset temperature of weight loss was decreased by 92 ℃ and 40 ℃，respectively，and the maximum weight loss rate and weight loss were reduced.These indicated that carbonate minerals inhibited the release of small organic molecules at low temperatures and promoted the thermal decomposition of kerogen at high temperatures.Further de-silicate of carbonate-free oil shale increased the maximum weight loss rate of Huadian oil shale，which suggested that silicate minerals suppress kerogen pyrolysis at high temperatures.As to the pyrolysis reaction of oil shale at 350 ℃-510 ℃，de-carbonate decreased and de-silicate increased the apparent activation energy value by about 10 kJ/mol and 30 kJ/mol，respectively.This indicated that carbonates increased while silicates decreased the temperature sensitivity of weight loss rate and silicates played a more pronounced effect than carbonates. |
| first_indexed | 2024-04-11T06:51:10Z |
| format | Article |
| id | doaj.art-725a6075edb04f90aa4ce11b67ff9511 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-11T06:51:10Z |
| publishDate | 2018-06-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-725a6075edb04f90aa4ce11b67ff95112022-12-22T04:39:12ZengEmergency Management Press矿业科学学报2096-21932018-06-013329029810.19606/j.cnki.jmst.2018.03.01120180311Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shalesChang Zhibing0Chu Mo1Zhang Chao2Bai Shuxia3Lin Hao4Ma Liangbo5School 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, ChinaStep-wise acid washing was applied to eliminate the indigenous minerals of Huadian and Balikun oil shales.The pyrolysis experiments of raw and demineralized oil shales were carried out by using a thermogravimetric analyzer.The effects of demineralization on pyrolysis were investigated by comparing the thermal weight loss characteristics and kinetic parameters of different oil shale samples.Results showed that after removal of carbonate minerals，the onset temperature of weight loss was decreased by 92 ℃ and 40 ℃，respectively，and the maximum weight loss rate and weight loss were reduced.These indicated that carbonate minerals inhibited the release of small organic molecules at low temperatures and promoted the thermal decomposition of kerogen at high temperatures.Further de-silicate of carbonate-free oil shale increased the maximum weight loss rate of Huadian oil shale，which suggested that silicate minerals suppress kerogen pyrolysis at high temperatures.As to the pyrolysis reaction of oil shale at 350 ℃-510 ℃，de-carbonate decreased and de-silicate increased the apparent activation energy value by about 10 kJ/mol and 30 kJ/mol，respectively.This indicated that carbonates increased while silicates decreased the temperature sensitivity of weight loss rate and silicates played a more pronounced effect than carbonates.http://kykxxb.cumtb.edu.cn/article/id/150oil shaledemineralizationpyrolysisthermogravimetric analysiskinetic |
| spellingShingle | Chang Zhibing Chu Mo Zhang Chao Bai Shuxia Lin Hao Ma Liangbo Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shales 矿业科学学报 oil shale demineralization pyrolysis thermogravimetric analysis kinetic |
| title | Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shales |
| title_full | Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shales |
| title_fullStr | Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shales |
| title_full_unstemmed | Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shales |
| title_short | Effect of demineralization on pyrolysis characteristics and kinetics of two Chinese oil shales |
| title_sort | effect of demineralization on pyrolysis characteristics and kinetics of two chinese oil shales |
| topic | oil shale demineralization pyrolysis thermogravimetric analysis kinetic |
| url | http://kykxxb.cumtb.edu.cn/article/id/150 |
| work_keys_str_mv | AT changzhibing effectofdemineralizationonpyrolysischaracteristicsandkineticsoftwochineseoilshales AT chumo effectofdemineralizationonpyrolysischaracteristicsandkineticsoftwochineseoilshales AT zhangchao effectofdemineralizationonpyrolysischaracteristicsandkineticsoftwochineseoilshales AT baishuxia effectofdemineralizationonpyrolysischaracteristicsandkineticsoftwochineseoilshales AT linhao effectofdemineralizationonpyrolysischaracteristicsandkineticsoftwochineseoilshales AT maliangbo effectofdemineralizationonpyrolysischaracteristicsandkineticsoftwochineseoilshales |