Desain Feedback Feedforward Control pada Refinery Unit

Alfajri, Alfajri (2021) Desain Feedback Feedforward Control pada Refinery Unit. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Seiring dengan peningkatan jumlah penduduk, kebutuhan akan energi di Indonesia tentu juga meningkat. Konsumsi minyak bumi sebagai salah satu sumber energi yang dominan digunakan terus meningkat diiringi hasil produksi yang menurun. Berbagai solusi dilakukan untuk memenuhi kebutuhan, mulai dari pembangunan kilang baru, hingga optimalisasi pada proses produksi minyak di refining proses. Pemisahan minyak mentah untuk mendapatkan produknya dilakukan di refinery unit berdasarkan titik didih setiap produk. Pada proses pemisahan di refinery unit terdapat daur ulang material serta integrasi panas yang menyebabkan ketidakstabilan plant terhadap gangguan. Diterapkan metode plantwide control dengan lapisan pengendali feedback-feedforward untuk meningkatkan kestabilan plant serta memaksimalkan profit dan menghemat penggunaan energi. Desain PWC yang diterapkan berhasil meningkatkan kestabilan sistem, ditunjukkan dengan penurunan pada nilai maximum overshoot, settling time, ESS serta nilai IAE saat diberi gangguan. Saat penurunan dan peningkatan laju produksi, desain PWC dapat menghemat penggunaan energi sebesar 2179,38 kWh dan 1832,10 kWh. Penghematan penggunaan energi dan peningkatan produksi, dari segi ekonomi mampu meningkatkan profit hingga 152,81 USD/h saat produksi diturunkan dan 132,40 USD/h produksi ditingkatkan dibandingkan sebelum PWC diterapkan.
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Along with the increasing population, the need for energy in Indonesia is certainly also increasing. Consumption of petroleum as one of the dominant energy sources used continues to increase accompanied by declining production. Various solutions are carried out to meet the needs, ranging from the construction of new refineries, to optimization of the oil production process in the refining process. The separation of crude oil to obtain its products is done in the refinery unit based on the boiling point of each product. In the separation process in the refinery unit there are material recycling and heat integration that cause plant instability to interference. Plantwide control method is applied with feedback-feedforward control layer to improve plant stability and maximize profit and save energy usage. PWC design successfully improved system stability, indicated by a decrease in maximum overshoot, settling time, ESS and IAE values when impaired. During production rate decrease and increase, PWC design can save energy usage by 2179,38 kWh and 1832,10 kWh. Energy uses savings and increased production were able to increase profits to 152,81 USD/h when production was lowered and 132,40 USD/h of production was increased compared to before PWC was implemented.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Refinery Unit, Plantwide Control, Feedback-Feedforward
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. T Technology > TJ Mechanical engineering and machinery > TJ222 Supervisory control systems. T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Alfajri Alfajri
Date Deposited:	17 Aug 2021 15:58
Last Modified:	17 Aug 2021 15:58
URI:	http://repository.its.ac.id/id/eprint/87207

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