Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis
The inevitable emission of aerosols during pyrolysis can negatively affect the downstream process and even pollute the environment. In this work, the characteristics of aerosols were investigated during corn stalk pyrolysis at 400–900 °C. The effects of other operation conditions on the aerosol emis...
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| Format: | Article |
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MDPI AG
2020-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/22/5924 |
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| author | Ning Li Jiale Zhang Zhihe Li Yongjun Li |
| author_facet | Ning Li Jiale Zhang Zhihe Li Yongjun Li |
| author_sort | Ning Li |
| collection | DOAJ |
| description | The inevitable emission of aerosols during pyrolysis can negatively affect the downstream process and even pollute the environment. In this work, the characteristics of aerosols were investigated during corn stalk pyrolysis at 400–900 °C. The effects of other operation conditions on the aerosol emissions were also probed with online and offline instruments. Results show the yield of aerosol presents a regular change with temperature in a wide range ratio of 3.4–8.7 wt.%. The aerosol size distribution reveals a unimodal form mainly in the 1.1–2.1 μm accumulation range and the maximum emission achieved is about 35 mg/g for SR and SP at 500 °C. Nevertheless, SL gives about 34 mg/g at 600 °C. High temperature promotes the decomposition of polymers into partciles with small diameter (less than PM<sub>1.0</sub>). The microtopography of aerosol presents spherical droplets, elongated-like liquid and solid particles that form heterogenous or homogeneous aggregations, that also happen on account of collisions. Aerosols contain mostly organic matter, a small amount of salt and over 50% of volatile organic carbon molecules (VOCs) in the total organic carbon (OC). Proper gas flow, high vapor concentration and longer path way boost the yield of bio-oil and reduce the emission of aerosols. The direct contact is beneficial for adequate extraction, but also causes additional solvent emissions. |
| first_indexed | 2024-03-10T14:52:14Z |
| format | Article |
| id | doaj.art-d8ec58f62f064b3d8a2b53933eda013e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T14:52:14Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-d8ec58f62f064b3d8a2b53933eda013e2023-11-20T20:53:37ZengMDPI AGEnergies1996-10732020-11-011322592410.3390/en13225924Characteristics of Aerosol Formation and Emissions During Corn Stalk PyrolysisNing Li0Jiale Zhang1Zhihe Li2Yongjun Li3School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, ChinaThe inevitable emission of aerosols during pyrolysis can negatively affect the downstream process and even pollute the environment. In this work, the characteristics of aerosols were investigated during corn stalk pyrolysis at 400–900 °C. The effects of other operation conditions on the aerosol emissions were also probed with online and offline instruments. Results show the yield of aerosol presents a regular change with temperature in a wide range ratio of 3.4–8.7 wt.%. The aerosol size distribution reveals a unimodal form mainly in the 1.1–2.1 μm accumulation range and the maximum emission achieved is about 35 mg/g for SR and SP at 500 °C. Nevertheless, SL gives about 34 mg/g at 600 °C. High temperature promotes the decomposition of polymers into partciles with small diameter (less than PM<sub>1.0</sub>). The microtopography of aerosol presents spherical droplets, elongated-like liquid and solid particles that form heterogenous or homogeneous aggregations, that also happen on account of collisions. Aerosols contain mostly organic matter, a small amount of salt and over 50% of volatile organic carbon molecules (VOCs) in the total organic carbon (OC). Proper gas flow, high vapor concentration and longer path way boost the yield of bio-oil and reduce the emission of aerosols. The direct contact is beneficial for adequate extraction, but also causes additional solvent emissions.https://www.mdpi.com/1996-1073/13/22/5924cornstalkpyrolysisaerosol |
| spellingShingle | Ning Li Jiale Zhang Zhihe Li Yongjun Li Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis Energies cornstalk pyrolysis aerosol |
| title | Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis |
| title_full | Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis |
| title_fullStr | Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis |
| title_full_unstemmed | Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis |
| title_short | Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis |
| title_sort | characteristics of aerosol formation and emissions during corn stalk pyrolysis |
| topic | cornstalk pyrolysis aerosol |
| url | https://www.mdpi.com/1996-1073/13/22/5924 |
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