Desain Plantwide Control pada Naphta Hydrotreater Unit (NHT) Refinery Process Menggunakan Model Predictive Control guna Mengatasi Perubahan Laju Aliran Produksi

Wibowo, Hanif Ariq (2024) Desain Plantwide Control pada Naphta Hydrotreater Unit (NHT) Refinery Process Menggunakan Model Predictive Control guna Mengatasi Perubahan Laju Aliran Produksi. Other thesis, Insitut Teknologi Sepuluh Nopember.

Text Hanif Ariq Wibowo_Laporan TA Teknik Fisika 5009201012.pdf - Accepted Version Restricted to Registered users only until 1 October 2026. Download (3MB) | Request a copy

Abstract

Kebutuhan manusia akan energi tidak pernah habis, bahkan meningkat seiring dengan perkembangan zaman khususnya permintaan akan minyak bumi sebagai sumber energi akan semakin meningkat pula. Berbagai upaya dilakukan untuk memenuhi kebutuhan tersebut, salah satunya adalah dengan mengoptimalkan proses produksi pada refinery unit. Pada refinery terdapat salah unit untuk menghilangkan racun katalis pada naphta yang akan memasuki platformer unit agar tidak terjadi korosif terhadap peralatan, memperbaiki mutu produk, dan menghilangkan senyawa yang dapat mengotori udara serta air, unit tersebut adalah Naphta Hydrotreater Unit. Pada proses NHT melibatkan berbagai senyawa yang kompleks sehingga menyebabkan integrasi panas dan recycle material yang menyebabkan proses ini rentan terhadap gangguan. Oleh karena itu, diterapkanlah metode PlantWide Control (PWC) dengan feedforward dan pembandingnya MPC sebagai supervisory control dalam penelitian ini guna meningkatkan kestabilan plant, mengurangi penggunaan energi sehingga akan meningkatkan profit perusahaan. 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 479.571 kJ/h dan 396.684 kJ/h. Berdasarkan penghematan tersebut sehingga mampu meningkatkan keuntungan sebesar 37.468.315,96 IDR/h saat naik dan 42.823.884,83 IDR/h saat turun setelah diterapkan metode PWC pada Naphta Hydrotreater Unit (NHT).
====================================================================================================================================
The human need for energy is never ending, even increasing along with the times, especially the demand for petroleum as a source of energy will also increase. Various efforts are made to meet these needs, one of which is by optimizing the production process at the refinery unit. In the refinery, there is a unit to eliminate toxic catalysts in naphta that will enter the platformer unit to prevent corrosive equipment, improve product quality, and eliminate compounds that can pollute air and water, the unit is the Naphta Hydrotreater Unit. The NHT process involves a variety of complex compounds that cause heat integration and material recycle which makes this process vulnerable to disruption. So, the PlantWide Control (PWC) method with feedforward and MPC as supervisory control is applied in this study to improve plant stability, reduce energy use so that it will increase company profits. The application of PWC design is able to improve plant stability, indicated by a decrease in the value of settling time, maximum overshoot, ESS, and IAE when given a disturbance. Energy savings when changing the production rate up and down amounted to 479,571 kJ/h and 396,684 kJ/h. Based on these savings, it is able to increase profits by 37,468,315.96 IDR/h when increasing and 42,823,884.83 IDR/h when decreasing after applying the PWC method to the Naphta Hydrotreater Unit (NHT).

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Refinery Unit, Naphta Hydrotreater Unit (NHT), PlantWide Control, MPC, PID, FF, Petrochemical, Supervisory Control, Advanced Control.
Subjects:	T Technology > T Technology (General) > T57.62 Simulation T Technology > T Technology (General) > T57.83 Dynamic programming T Technology > T Technology (General) > T58.8 Productivity. Efficiency T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction T Technology > TP Chemical technology > TP155.7 Chemical processes.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Hanif Ariq Wibowo
Date Deposited:	29 Jul 2024 06:30
Last Modified:	29 Jul 2024 06:30
URI:	http://repository.its.ac.id/id/eprint/109266

Actions (login required)

View Item