Rational use of energy in Bang Pa-in paper mill | |
| Author | Xu, Jian |
| Call Number | AIT Thesis no. ET-88-2 |
| Subject(s) | Paper mills--Thailand--Bang Pa-in Paper mills--Energy consumption |
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Starting from the principle of rational use of energy, strategies for Bang Pa- In Paper Mill to obtain high energy utilization efficiency, low pollution level and overall economic benefits are proposed and discussed based on the present situation of production and energy consumption and projection of its future in this study. The beginning strategy is the cogeneration of process heat and electricity which enable obtaining a higher energy conversion efficiency and thereby supply a lower cost electricity which is 0.955 Baht/kWh and only 59.7% of the electricity price of utility to the mill. The thermal- match cogeneration system fed with lignite is found the best alternative with the shortest payback period of 2.61 years. After it, mechanical vapour recompression as a more energy efficient way to recover waste black liquor, can provide 25000 tonnes concentrated black liquor per year which is equivalent to 1.86 x 10 11 kJ of heat upon 80 ton/day production capacity. Thirdly, methanogenesis by anaerobic digestion of papermaking wastewater, which is a way to reach the purposes of both energy production and wastewater treatment, can provide 4,024,125 M3 gas equivalent to 9.254 x 1O 10 kJ of heat per year. Last, applications of membrane for wastewater treatment and recovery and ozone for environmentally-safe bleaching sequence are discussed under the new energy circumstance. |
| Year | 1988 |
| 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) | Mora, Jean-Claude |
| Examination Committee(s) | Bhattacharya, Sribas C. ; Prida Wibulswas |
| Scholarship Donor(s) | King's Scholarship, Thailand |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1988 |