Karakteristik Dinamik Dan Pengendalian Gas Dehidrasi

Faizah, Nur and Indriyani, Liga (2018) Karakteristik Dinamik Dan Pengendalian Gas Dehidrasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada pabrik pengolahan gas alam, dehidrasi gas banyak dijumpai di pabrik pengolahan gas alam sebagai proses untuk menghilangkan air dalam gas alam yang dapat menyebabkan hidrat gas. Cara untuk mencegah terbentuknya hidrat gas yang dapat berpotensi korosi tersebut, yaitu dengan penyerapan air salah satunya menggunakan TEG (Triethylene Glycol) yang pada penelitian ini, dikendalikan dengan Proportional Integral Derivative (PID) Control menggunakan simulasi Aspen Hysys. Penelitian ini bertujuan untuk mengetahui karakteristik steady state dan dinamik pada proses gas dehidrasi, menentukan strategi pengendalian yang tepat dan menilai kerja pengendali PID Controller. Langkah yang dilakukan meliputi pengumpulan dan pengolahan data dari literatur. Kemudian melakukan simulasi proses steady state dengan Aspen Hysys dan validasi hasil simulasi yang dilakukan. Kemudian sizing dan perubahan ke dynamic mode sekaligus karakteristik dinamik (open loop). Selanjutnya langkah yang terakhir yaitu melakukan pengendalian proses dengan PID control. Berdasarkan penelitian yang dilakukan, maka dapat diperoleh hasil bahwa PID controller berhasil digunakan sebagai kontrol pada alat kolom regenerator dan TEG Flash Drum dengan pemberian disturbance berupa ±10% komposisi water pada sweet gas menghasilkan respon pada masing-masing controller yang dapat kembali ke set point yang diinginkan. Analisa kinerja PID controller menggunakan IAE menunjukkan error yang tidak begitu besar. =============== At natural gas processing plants, gas dehydration is commonly found in natural gas processing plants as a process to remove water in natural gas which can cause gas hydrates. The way to prevent the formation of gas hydrates that can potentially corrosive, in example by water absorption that one of them using TEG (Triethylene Glycol) in this study, controlled by Proportional Integral Derivative (PID) Control using Aspen Hysys simulation. This study aims to determine the characteristics of steady state and dynamics in the gas dehydration process, determine the appropriate control strategy and analyze the work of PID Controller. The steps taken include the collection and processing of data from the literature. Then simulate the steady state process with Aspen Hysys and validate the simulation result. Then sizing and changing to dynamic mode as well as dynamic characteristics (open loop). The next step is to control the process with PID control. Based on the research done, it can be obtained that the PID controller successfully used as a control on the regenerator column tool and TEG Flash Drum with a disturbance of ± 10% of water composition in sweet gas generates a response on each controller that can return to the set point desired. The performance analysis of PID controller using IAE shows a not so big error.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Gas dehydration unit; Tryethylene Glycol (TEG); Proportional Integral Derivative (PID) control; Aspen Hysys
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers
T Technology > TP Chemical technology > TP156 Crystallization. Extraction (Chemistry). Fermentation. Distillation. Emulsions.
T Technology > TP Chemical technology > TP350 Natural gas--Drying.
T Technology > TS Manufactures > TS171 Product design
Divisions: Faculty of Industrial Technology > Chemical Engineering > (S1) Undergraduate Theses
Depositing User: Liga Indriyani
Date Deposited: 15 Mar 2018 04:03
Last Modified: 15 Mar 2018 04:03
URI: http://repository.its.ac.id/id/eprint/49998

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