ANALISA PENGARUH OUTPUT RECTIFIER TERHADAP EFISIENSI CHLORINATION PLANT DI PLTU LABUAN
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Zainy Rachman, Gerry
Agus Yogianto, Aloysius
Agus Yogianto, Aloysius
Subject
Teknik Elektro
Datestamp
2022-11-08 01:44:25
Abstract :
Chlorination plant is a system that converts seawater into a chlorine solution. Chlorine functions to prevent microorganisms from multiplying by temporarily paralyzing marine biota that can cause disturbances in cooling functions such as condensers and heat exchangers. Based on PERMENLHK SK.719/Menlhk/Setjen/PKL.1/9/2019 the allowed residual chlorine in the cooling water cycle according to the Environmental Quality Standards ranges from 0.2-0.5 ppm. Sea water is converted through an electrolysis process assisted by direct electric current injection from the rectifier transformer. The condition of the chlorination plant rectifier transformer has occurred 54 times, so the rectifier current is limited to 4000 amperes. This study aims to analyze the production efficiency of the chlorination plant of PLTU Labuan based on the chlorine production capacity during commissioning, which is 111,695 kg/h. Variables tested, namely rectifier current, seawater flow, cell voltage, chlorine concentration, and residual chlorine. The variables are then processed and analyzed to get the calculation of chlorine production, specific energy consumption and efficiency of chlorination plant. Based on the analysis of the test results, the maximum efficiency of the chlorination plant was obtained at 4000A working current with a value of 59.1%. In addition, the highest residual chlorine value was obtained at the 4000 A rectifier output current with a value of 0.24 ppm. From the test results, the chlorination plant of PLTU Labuan is recommended to operate at a working current of 3500 amperes to 4000 amperes according to the analysis that has been done.
Chlorination plant is a system that converts seawater into a chlorine solution. Chlorine functions to prevent microorganisms from multiplying by temporarily paralyzing marine biota that can cause disturbances in cooling functions such as condensers and heat exchangers. Based on PERMENLHK SK.719/Menlhk/Setjen/PKL.1/9/2019 the allowed residual chlorine in the cooling water cycle according to the Environmental Quality Standards ranges from 0.2-0.5 ppm. Sea water is converted through an electrolysis process assisted by direct electric current injection from the rectifier transformer. The condition of the chlorination plant rectifier transformer has occurred 54 times, so the rectifier current is limited to 4000 amperes. This study aims to analyze the production efficiency of the chlorination plant of PLTU Labuan based on the chlorine production capacity during commissioning, which is 111,695 kg/h. Variables tested, namely rectifier current, seawater flow, cell voltage, chlorine concentration, and residual chlorine. The variables are then processed and analyzed to get the calculation of chlorine production, specific energy consumption and efficiency of chlorination plant. Based on the analysis of the test results, the maximum efficiency of the chlorination plant was obtained at 4000A working current with a value of 59.1%. In addition, the highest residual chlorine value was obtained at the 4000 A rectifier output current with a value of 0.24 ppm. From the test results, the chlorination plant of PLTU Labuan is recommended to operate at a working current of 3500 amperes to 4000 amperes according to the analysis that has been done.
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