Rini, Yunita Puspita (2020) Desain Plantwide Control Pada Proses Dehydration Liquefied Natural Gas (LNG). Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
02311640000046_UNDERGRADUATE THESIS.pdf Download (1MB) | Preview |
Abstract
Dehidrasi adalah salah satu tahapan penting dalam pembuatan Liquefied Natural Gas (LNG). Dehidrasi adalah proses menghilangkan uap air dari gas alam. Dalam menghilangkan uap air, digunakan metode absorbsi dengan liquid tryethylene glycol (TEG). Dalam prosesnya, TEG memerlukan regenerasi. Adanya material recycle dalam proses dehidrasi dapat menyebabkan terjadinya ketidakseimbangan massa. Selain itu biaya operasional yang tinggi juga menjadi masalah tersendiri. Untuk mengatasi masalah terebut, diperlukanlah plantwide control (PWC) pada proses dehidrasi. Dalam perancangan plantwide control (PWC) pada proses dehidrasi menggunakan metode Skoegestad, yang mana telah memperhatikan segi ekonomi. Dengan penerapan PWC pada proses dehidrasi mampu memberikan profit sebesar 45,2944 U$ per jam ketika feed dinaikkan 5%. Dan memberikan profit sebesar 32,57194 U$ per jam ketika feed diturunkan sebesar 5%. Selain itu, mampu menurunkan penggunaan energi baik ketika feed naik 5% dan turun 5%. Respon PWC yang dihasilkan lebih baik daripada pengendali biasa. Dimana dibuktikan dengan menurunnya settling time, maximum overshoot, dan integral absolute error (IAE) serta hilangnya error steady state.
=================================================================================================================================
Dehydration is one of the important stages in the manufacture of Liquefied Natural Gas (LNG). Dehydration is the process of removing water vapor from natural gas. In removing moisture, a method of absorption with liquid tryethylene glycol (TEG) is used. In the process, TEG requires regeneration. The existence of recycle material in the dehydration process can cause mass imbalance. In addition, high operational costs are also a problem. To overcome this problem, plantwide control (PWC) is needed in the dehydration process. In designing plantwide control (PWC) in the dehydration process using the Skoegestad method, which has paid attention to the economic aspect. With the application of PWC in the dehydration process it is able to provide a profit of 45.2944 U $ per hour when the feed is raised by 5%. And provide a profit of 32,57194 U $ per hour when the feed is lowered by 5%. In addition, it can reduce energy use both when the feed goes up by 5% and down by 5%. The resulting PWC response is better than ordinary controllers. Which is proven by decreasing settling time, maximum overshoot, and integral absolute error (IAE) and loss of steady state error.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSF 629.89 Rin d-1 2020 |
| Uncontrolled Keywords: | dehydration, plantwide control, recycle |
| Subjects: | T Technology > TP Chemical technology > TP156 Crystallization. Extraction (Chemistry). Fermentation. Distillation. Emulsions. T Technology > TP Chemical technology > TP350 Natural gas--Drying. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | YUNITA PUSPITA RINI |
| Date Deposited: | 10 Jan 2024 08:29 |
| Last Modified: | 10 Jan 2024 08:29 |
| URI: | http://repository.its.ac.id/id/eprint/74533 |
Actions (login required)
 |
View Item |