DESAIN PLANTWIDE CONTROL (PWC) PADA CRUDE DISTILLATION UNIT (CDU) MENGGUNAKAN MODEL PREDICTIVE CONTROLLER (MPC) UNTUK MENGATASI LAJU PERUBAHAN PRODUKSI

FATTAH, ACHMAD (2021) DESAIN PLANTWIDE CONTROL (PWC) PADA CRUDE DISTILLATION UNIT (CDU) MENGGUNAKAN MODEL PREDICTIVE CONTROLLER (MPC) UNTUK MENGATASI LAJU PERUBAHAN PRODUKSI. Undergraduate thesis, INSTITUT TEKNOLOGI SEPULUH NOPEMBER.

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Abstract

Di Indonesia, kebutuhan minyak dan gas bumi sebagai salah satu sumber energi setiap tahun mengalami peningkatan. Berbagai upaya dilakukan untuk memenuhi kebutuhan minyak dan gas bumi. Salah satunya yaitu mengoptimalkan proses produksi pada refinery unit. Pada refinery unit terdapat Crude Distillation Unit (CDU) yang berperan penting sebagai sub unit awal untuk memisahkan minyak mentah menjadi beberapa fraksi yang lebih sederhana dan akan diproses lebih lanjut oleh unit lain. Pada proses distilasi dengan senyawa yang komplek terdapat integrasi panas dan daur ulang material yang menyebabkan proses ini rentan terhadap gangguan. Maka diterapkanlah metode plantwide Control (PWC) dengan MPC sebagai supervisory Control dalam penelitian ini untuk meningkatkan kestabilan plant, mengurangi penggunaan energi, dan meningkatkan keuntungan. Pengaplikasian desain PWC mampu meningkatkan kestabilan plant, ditunjukkan dengan penurunan nilai settling time, maximum overshoot, ESS, dan IAE ketika diberikan gangguan. Penghematan energi ketika dilakukan perubahan laju produksi naik dan turun sebesar 5191.66 kWh dan 3796.8 kWh. Mampu meningkatkan keuntungan sebesar 366.37 USD/h saat naik, dan 267.12 USD/h saat turun setelah diterapkan metode PWC pada plant Crude Distillation Unit (CDU). =========================================================================================================== Every year, Indonesia's need for oil and natural gas as a source of energy grows. To fulfill the demands of oil and gas, several initiatives were undertaken. One of them is improving the refinery unit's manufacturing process. There is a Crude Distillation Unit (CDU) in the refinery unit that serves as an initial sub unit for separating crude oil into smaller fractions that will be processed by later units. Heat integration and material recycling occur during the distillation of complex chemicals, making this process susceptible to influence. The plantwide Control (PWC) approach was then used in this study, together with MPC as a supervisory Control, to improve plant stability, minimize energy usage, and boost profitability. When a disturbance is applied, the PWC design is able to enhance the plant's stability, as seen by a drop in the values of settling time, maximum overshoot, ESS, and IAE. When the output rate is changed up and down, energy savings are 5191.66 kWh and 3796.8 kWh, respectively. After implementing the PWC technique to the Crude Distillation Unit (CDU) plant, earnings increased by 366.37 USD/h when it went up and 267.12 USD/h when it went down

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Refinery unit, Crude Distillation Unit (CDU), Plantwide Control
Subjects: H Social Sciences > HD Industries. Land use. Labor
T Technology > TA Engineering (General). Civil engineering (General) > TA660.C6 Columns
T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control.
T Technology > TJ Mechanical engineering and machinery > TJ217.6 Predictive Control
T Technology > TJ Mechanical engineering and machinery > TJ222 Supervisory control systems.
T Technology > TP Chemical technology > TP156 Crystallization. Extraction (Chemistry). Fermentation. Distillation. Emulsions.
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Achmad Fattah
Date Deposited: 20 Aug 2021 02:57
Last Modified: 20 Aug 2021 02:57
URI: https://repository.its.ac.id/id/eprint/87960

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