Life cycle assessment of carbon dioxide sequestration and fixation system for capturing and reacting carbon dioxide into sodium bicarbonate for coal fired power plant/Loi Kim Poo
Penjanaan kuasa elektrik dengan pembakaran arang batu telah menjadi salah satu pilihan yang sangat digemarkan untuk penjanaan kuasa di negara-negara yang sedang membangun seperti Malaysia, Indonesia, China dan India. Namun, loji kuasa berbahan arang batu menyebabkan pencemaran udara terutama pembebasan zarahan dan karbon dioksida (CO2) ke atmosfera. Dengan demikian, dalam projek kajian ini, ayunan tekanan jerapan (PSA) untuk memerangkap CO2 dan unit penukaran dengan tindak balas kimia untuk menukarkan CO2 kepada natrium bikarbonat telah direka cipta dan penilaian ekonomi adalah berdasarkan satu daripada tiga boiler yang menghasilkan 700MW masing-masing untuk Manjung Penjanaan Kuasa Berbahan Arang Batu. Daripada analisis keuntungan, ia menunjukkan bahawa tempoh pulangan daripada pelaburan adalah hanya 2.44 tahun dan ia adalah sangat menguntungkan. Selain itu, analisis kitaran hidup menunjukkan bahawa kecekapan penyerapan CO2 adalah setinggi 97%. Namun begitu, produk natrium bikarbonat yang dihasilkan terlampau banyak daripada proses tindak balas kimia tersebut. Ini membuat kesimpulan bahawa teknologi ini hanya sesuai untuk penjanaan elektrik skala kecil seperti penjanaan elektrik tenaga arang batu 100 MW di Sarawak, Sejingkat Power Corporation Plant.
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Coal fired power plant has been the favorite choice for power generation in the developing countries such as Malaysia, Indonesia, China and India. However, coal fired power plant has been blamed for pollutions to air especially emissions of particulate and carbon dioxide (CO2) into the atmosphere. Thus, in this research project, the pressure swing adsorption (PSA) to capture CO2 and converter units system to convert CO2 into sodium bicarbonate was designed and evaluated for its economic feasibility and net emissions of CO2 that it can brings to the environment, taking one of three boilers which generating 700MW each for Manjung Coal Fired Power Plant as reference. From the profitability analysis, it shown that the payback period from discounted cash flow analysis is 2.44 years and was profitable. Besides, the cradle-to-gate life cycle analysis shown that the sequestration efficiency of CO2 was as high as 97%. However, extremely high production rate of sodium bicarbonate made the conclusion that this capture with the fixation technology was only suitable for the small scale power generation such as a 100MW coal fired power plant in Sarawak, Sejingkat Power Corporation Plant.
Life cycle assessment of carbon dioxide sequestration and fixation system for capturing and reacting carbon dioxide into sodium bicarbonate for coal fired power plant/Loi Kim Poo
Life cycle assessment of carbon dioxide sequestration and fixation system for capturing and reacting carbon dioxide into sodium bicarbonate for coal fired power plant_Loi Kim P