Hydrogen enriched gas production using fluidized bed steam gasifier with in-process carbon-di-oxide capture | |
| Author | Acharya, Bishnu |
| Call Number | AIT Thesis no.ET-08-04 |
| Subject(s) | Biomas energy Hydrogen as fuel |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Energy |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ET-08-04 |
| Abstract | The continuous use of fossil fuel is creating scarcity of resources and at the same time degrading the environmental quality, leading to global warming and climate change. So, there is need to move towards renewable resource of energy. In this context, hydrogen can be future source to meet the energy requirement sustainably. Thus, this report studies the hydrogen production potential from biomass using steam fluidized bed technology with in-process carbon dioxide capture. For different biomass types, the theoretical hydrogen potential has been calculated. The mathematical model has been developed using Gibbs free energy minimization concept, and the effect of different parameters (temperature, SIB ratio and [Ca/C] ratio) has been studied. Hydrogen production is found to be maximum at SIB ratio of 0.9, [Ca/C] ratio of 1.08 and temperature 700°C. The comparison between the theoretical production potential and mathematical model has been done and results from mathematical model shows that 75 % in an average of theoretical potential can be produced for woody biomass and 70 % for agricultural residue. An experimental set up to study the hydrogen production and, in-process carbon dioxide capture using CaO as sorbent, has been developed and 71 % concentration of hydrogen in total volume of producer gas was found from the experiment result while carbon dioxide is found to be nearly zero. To study the regeneration of catalyst, a regenerator has been developed which is circulating fluidized bed. From experiment, 40 % regeneration of CaO was achieved. Thus study done concludes that biomass can be considered as the source for hydrogen production |
| Year | 2008 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ET-08-04 |
| 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) | Kumar, Sivanappan;Dutta, Animesh |
| Examination Committee(s) | Nadarajah, Mithulanantha |
| Scholarship Donor(s) | Thailand (HM Queen) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |