A study of certain aspects of spouted and modified spouted bed reactors | |
| Author | Aung, Kyaw Than |
| Call Number | AIT Thesis no. ET-91-6 |
| Subject(s) | Spouted bed processes Fluidized reactors |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The scarcity and short lifetime of oil has prompted a renewed interest in the use of coal as a primary substitute fuel. Although huge reserves of coal has been found all over the world, t he quality of most coal is so poor that the need for an efficient combustor to burn these coals can not be overemphasized. A spouted bed is a technique capable of processing large and coarse materials easily and satisfactorily in such applications as drying, coating, granulation and combustion. The use of spouted bed as a combustor has received considerable attention in recent years as a result of its ability to burn coal and coal rejects satisfactorily. In this study correlations relating the fountain height and radius with operating variables are found from experimental observations. A model for solid particle movement in the annular region of a spouted bed has been formulated and validated. The solid flow model is found to be suitable for predicting solid particle velocities and flow patterns in the annular region of a spouted bed. The solid flow model as well as fountain correlations a re considered essential in spouted bed combustion applications. A modified spouted bed combustor which makes use of a screw to impart solid motion has been designed and constructed during the study to determine its feasibility as an efficient combustor. A simplified combustion model for the new design has also been formula ted . It has been found that the new combustor is promising and further study on the hydrodynamics and combustion is necessary to fully explore its potentials. |
| Year | 1991 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Bhattacharya, Sribas C. |
| Examination Committee(s) | Exell, Robert H.B. ;Prida Wibulswas |
| Scholarship Donor(s) | The Government of France |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1991 |