A study on biomass gasification in spout-fluid bed | |
| Author | Pitaksa Suwannakuta |
| Call Number | AIT Thesis no. ET-02-22 |
| Subject(s) | Biomass gasification Spouted bed processes |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engjneering. School of Environn1ent Resources, and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ET-02-22 |
| Abstract | The main objective of this study was to carry out an experimental study on a novel spoutfluid bed gasifier design aimed to minimize tar content of the gas. The study involved investigation of i) gasification with primary air alone ii) gasification with primary and secondary air iii) gasification with primary air, secondary air and recirculation of carryover iv) gasification with primary air, secondary air and charcoal fed as a secondary reducing fuel and v) gasification with primary air, secondary air, charcoal feeding and recirculation of carryover. The results of the investigation revealed that for the case ii) above, increasing the ratio of secondary to primary air resulted in decrease of tar content, gasification efficiency and higher heating value due to partial oxidation of gas, but increase of gas yield due to higher amount of N2 in the gas coming with secondary air. Gasification with secondary air and recirculation of carryover results in decrease in tar content and increase in gasification efficiency and higher heating value compared to gasification with secondary air but no recirculation of carryover. The most significant result of this study was that no tar content in producer gas was detected at equivalence ratio of 0.45 of charcoal feeding with respect to secondary air supply with or without recirculation of carryover. At this condition, the higher heating value of the gas was about 3.9 MJ/Nm3 |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ET-02-22 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Bhattacharya, S.C. |
| Examination Committee(s) | Surapong Chirarattananon ;Kumar, S. |
| Scholarship Donor(s) | His Majesty the King of Thailand Scholarship Foundation |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |