Priambodo, Kokoh (2019) Optimisasi Efisiensi Energi pada Proses Liquefaction Natural Gas dengan Menggunakan Metode Plantwide Control. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penggunaan energi hidrokarbon saat ini masih sangat dominan, dimana energi hidrokarbon yang paling efisien adalah gas alam. Dalam proses distribusinya, gas alam harus didinginkan terlebih dahulu hingga menjadi liquid atau yang biasa disebut sebagai LNG. Proses pencairan gas alam terdiri dari dari tiga bagian, yaitu siklus pendinginan propane oleh sea water, siklus pendinginan MCR oleh propana, dan siklus pencairan gas alam oleh MCR. Perancangan desain PWC pada LNG bertujuan untuk meningkatkan efiensi energi yang dikonsumsi sehingga profit yang didapatkan maksimal serta dapat meningkatkan kestabilan plant ketika diberikan gangguan. Hasil perancangan PWC pada kenaikan feed 5% mampu menurunkan energi sebesar 85.867,151 kJ/ jam dan mampu meningkatkan profit sebesar 2.010.321.775 rupiah/ hari. Sedangkan pada penurunan feed sebesar 5% mampu menurunkan penggunaan energi sebesar 96.297,243 kJ/ jam dan mampu meningkatkan profit sebesar 2.254.511.068 rupiah/ hari. Penerapan PWC juga dapat menghasilkan respon sistem yang stabil saat dilakukan uji gangguan dibuktikan dengan settling time dan overshoot yang menurun serta menghilangkan eror steady state dibandingkan dengan pengendalian PID saja sebelum dilakukan perancangan PWC. Kata Kunci : Energi, Kontrol Proses, LNG Plant, Plantwide Control
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Hydrocarbons energy is currently still very dominant, where the most efficient hydrocarbon energy is natural gas. The process of natural gas distribution, it must be cooled first to become liquid or commonly called by LNG. The natural gas liquefaction process consists of three parts, the first is propane refrigeration cycle by sea water, the second is MCR refrigeration cycle by propane, and natural gas liquefaction cycle by MCR. The objectives of PWC design in this plant are to increase the efficiency of energy consumed so that the maximum profit can be obtained and can increase plant stability when given disturbances The results of the design of PWC at a 5% increase in feed is capable of lowering the energy use of 85.867,151 kJ perhour and able to improve profit in the amount of 2.010.321.775 rupiah per day, while in a 5% decrease in feed is capable of lowering the energy use of 96.297.243 kJ perhour and able to increase profit in the amount of 2.254.511.068 rupiah per day. Application of PWC can also generate a stable system response with disturbance test, with evidence can decrease settling time and overshoot and omit steady state error compared control PID just before the redesign PWC. Keywords : Energy, LNG Plant, Plantwide Control, Process Control
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Energi, Kontrol Proses, LNG Plant, Plantwide Control |
| Subjects: | T Technology > TS Manufactures > TS155 Production control. Production planning. Production management T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) T Technology > TS Manufactures > TS167 Costs, Industrial T Technology > TS Manufactures > TS176 Manufacturing engineering. Process engineering (Including manufacturing planning, production planning) |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Kokoh Priambodo |
| Date Deposited: | 24 Sep 2024 05:24 |
| Last Modified: | 24 Sep 2024 05:24 |
| URI: | http://repository.its.ac.id/id/eprint/74389 |
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