Simulasi Reaktor Hidrodearomatik dan Hidrodesulfurisasi Pada Berbagai Kondisi Operasi Pada Pengolahan Minyak Pelumas Bekas

Himawan, Riswanda and Sahertian, Ferdy Ridwand (2018) Simulasi Reaktor Hidrodearomatik dan Hidrodesulfurisasi Pada Berbagai Kondisi Operasi Pada Pengolahan Minyak Pelumas Bekas. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Minyak pelumas merupakan campuran dari molekul hidrokarbon dengan 20 sampai 30 atom karbon. Minyak pelumas bekas merupakan limbah berbahaya yang harus diolah terlebih dahulu sebelum dibuang ke lingkungan. Mendaur ulang minyak pelumas bekas menjadi Minyak pelumas baru adalah salah satu cara yang paling efektif, salah satu caranya dengan proses hydrotreating, yang berlangsung dalam dua tahap, yaitu proses hydrogenation dan hydrodesulfurization. Penelitian ini bertujuan untuk mempelajari pengaruh parameter operasi seperti suhu reaktor dan laju alir pelumas (LHSV) terhadap penjenuhan dan pengurangan senyawa sulfur minyak pelumas dalam reaktor hidrodearomatik dan hidrodesulfurisasi. Selain itu, penelitian ini juga bertujuan untuk menentukan kondisi optimum dari variabel percobaan yang digunakan. Terdapat dua jenis percobaan simulasi yatu percobaan yang pertama menggunakan variabel bebas LHSV 0.5; 1; 1,5; 2 jam-1 dan suhu 300; 310; 320; 330; 340; 350; 360; 370; 380 oC, dengan variabel tetap tekanan 21 bar dan rasio H2/Oil 200 L/L. Sedangkan percobaan kedua menggunakan variabel bebas LHSV 0.5; 1; 1,5; 2 jam-1 dan tekanan 21; 41; 61; 81; 101 bar , dengan variabel tetap suhu 350 oC dan dan rasio H2/Oil 200 L/L. Penelitian ini menggunakan proses sekuensial antara hidrogenasi aromatik (HDA) kemudian hidrodesulfurisasi (HDS) dan reaktor bersifat adiabatis. Dari penelitian yang telah dilakukan, didapatkan kesimpulan sebagai berikut. Total konversi aromatik meningkat seiring naiknya suhu, sampai pada suhu 350 oC (LHSV 0,5 jam-1 ), 360 oC (LHSV 1 jam-1 ), 370 oC (LHSV 1,5 jam-1 ), 380 oC (LHSV 2 jam-1 ), kemudian menurun seiring naiknya suhu. Sementara total konversi aromatik reaksi hidrodearomatik menurun seiring dengan meningkatnya Liquid Hour Space Velocity. Kemudian konversi reaksi hidrodesulfurisasi meningkat seiring dengan meningkatnya suhu reaktor, sementara konversi reaksi hidrodesulfurisasi menurun seiring dengan meningkatnya Liquid Hour Space Velocity. Kondisi operasi reaktor hydrotreating yang optimal adalah pada suhu 350oC Liquid Hour Space Velocity 0,5 per jam tekanan 21 bar untuk reaktor hidrogenasi aromatik dan reaktor hidrodesulfurisasi. ===================================================================================================== Lubricating oil is a mixture of hydrocarbon molecules with 20 to 30 carbon atoms. Lubricating used oil is a hazardous waste that must be processed first before disposal into the environment. Recycling used lubricating used oil to new lubricating oil is one of the most effective ways, one way by hydrotreating process, which takes place in two stages, namely hydrogenation and hydrodesulfurization. The purposes of this research are to evaluate the effect of operating condition and parameter such as reactor temperature and liquid hourly space velocity (LHSV) on the saturation process and desulphurization process of used lube oil in hydrogenation of aromatic (HDA) and hydrodesulphurization (HDS) reactor and to find their optimum condition based on experiment’s process variables applied. The research use hydrogenation of aromatic reactor and hydrodesulphurization reactor, both are arranged sequentially and operating adiabatically. There are two simulation, the first simulation are using independent variables LHSV 0.5 hr-1; 1 hr-1; 1,5 hr-1; 2 hr-1 and temperature 300 oC; 310oC; 320 oC; 330 oC; 340 oC; 350 oC; 360 oC; 370 oC; 380 oC with 2 constant variables which are pressure at 21 bar and gas-to-oil ratio of 250 L/L. for the second simulation are using 2 independent variables. There are LHSV 0.5 hr-1; 1 hr-1; 1,5 hr-1; 2 hr-1 and pressure at 21; 41; 61; 81; 101 bar with 2 constant variables which are temperature at 350oC and gas-to-oil ratio of 200 L/L. Based on the conducted experiment, some results were obtained. The total conversion in Hydrogenation of aromatic reaction increased up to a certain temperature, 350 oC (LHSV 0,5 hr-1 ), 360 oC (LHSV 1 hr-1 ), 370 oC (LHSV 1,5 hr-1 ), 380 oC (LHSV 2 hr-1 ), and then decrease as the temperature rose. Also the total conversion in HDA reaction decrease as Liquid Hour Space Velocity rose. The conversion of sulphuric compound during hydrodesulphurization reaction increased as the temperature rose. The conversion of sulphuric compound during HDS reaction decreased as Liquid Hour Space Velocity rose. The optimum operating conditions are temperature of 350oC and LHSV of 0,5 hr-1 at 21 bar for hydrogenation of aromatic reaction and hydrodesulphurization reaction.

Item Type: Thesis (Undergraduate)
Additional Information: RSK 665.534 Him s-1
Uncontrolled Keywords: Hidrotreating, Hidrogenasi, Hidrogenasi Aromatik (HDA), Hidrodesulfurisasi (HDS), Liquid Hourly Space Velocity (LHSV), Pelumas bekas ============================================================ Hydrotreating, Hydrogenation, Hydrogenation of Armoatic (HDA), Hydrodesulphurization (HDS), Liquid Hourly Space Velocity (LHSV), Used lube oil
Subjects: T Technology > TP Chemical technology > TP343 Liquid and gaseous fuel
T Technology > TP Chemical technology > TP692.5 Oil and gasoline handling and storage
Divisions: Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis
Depositing User: Riswanda Himawan
Date Deposited: 27 Jan 2021 03:25
Last Modified: 27 Jan 2021 03:25
URI: https://repository.its.ac.id/id/eprint/54092

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