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Feedback control of temperature in the pyrolysis processby using microwave heating system |
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| รหัสดีโอไอ | |
| Creator | 1. Yutthapong Pianroj 2. Saysunee Jumrat 3. Seppo Karrila 4. Sunisa Chuayjumnong 5. Sopida Sungsoontorn |
| Title | Feedback control of temperature in the pyrolysis processby using microwave heating system |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2564 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 43 |
| Journal No. | 6 |
| Page no. | 1585-1590 |
| Keyword | microwave pyrolysis, microwave temperature control, oil palm shell |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | Microwave (MW) heating has gained popularity because it can provide rapid and more uniform heating thanconventional methods. As the pyrolysis mechanisms and products strongly depend on temperature, aside from uniformity oftemperature also control of its level will strongly affect experimental results. A temperature control system was developed for usein an experimental MW cavity in which a metallic propeller driven at 50 rpm is used to scatter the MW radiation. The resultsshow good performance of the developed feedback control system. It was experimentally tested with water at temperature setpoint 80 โ; and with a pyrolysis substance (oil palm shell biomass or OPS, mixed with activated carbon or AC) at set-points400, 500, and 600 โ. The largest bio-oil yield was obtained at the experimental conditions: ratio 70:30 at 500 ยฐC; and thedominant chemical components found were phenol and acetic acid, as analyzed by GC-MS. |
