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Yully Mulyani
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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Physics

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Analisa Lifetime Katalis Pada Reaktor Fix Bed Di Catalytic Condensation Unit Light End Unit Yully Mulyani; Ivan Fadila
Jurnal Migasian Vol 5 No 2 (2021): Jurnal Migasian
Publisher : LPPM Institut Teknologi Petroleum Balongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36601/jurnal-migasian.v5i2.176

Abstract

Konfigurasi kilang difokuskan pada pengubahan kandungan residu yang dominan pada minyak mentah berat tersebut menjadi produk-produk yang lebih berharga. Light End Unit (LEU) merupakan secondary processing yang dibangun untuk mengolah top product dari main column pada unit Residue Catalytic Cracking (RCC). Dalam LEU terdapat 5 bagian unit salah satunya Unit 20 Catalytic Condensation Unit (CCU). Unit 20 ini mengolah Butane mix dari unit 19 Propylene Recovery Unit (PRU) dan dihasilkan produk utama polygasoline dengan angka oktan yang tinggi. Produk lainnya yang dihasilkan adalah butane untuk blending LPG. Dalam unit CCU terdapat 3 reaktor yang merupakan tempat terjadinya reaksi polymerisasi yang dibantu oleh katalis. Reaktor yang digunakan dalam unit ini bertipe Fix Bed Reactor yang berarti katalis tetap berada didalam reaktor. Sehingga sewaktu – waktu katalis dapat mengalami rusak/deaktivasi. hasil lifetime katalis berguna sebagai perkiraan waktu penggantian katalis. Berdasarkan hasil evaluasi lifetime katalis, diperoleh data terakhir lifetime sebesar 0,124 m3/kg dari lifetime design 0,75 m3/kg. Data yang diperoleh menunjukkan bahwa kondisi katalis pada kurun waktu yang dievaluasi belum mengalami deaktivasi sehingga belum perlu dilakukan penggantian. Data yang diperoleh untuk rata-rata produksi polygasoline masih dibawah design dengan rata-rata nilai end point dari produk polygasoline sebesar 201⁰C dan syarat maksimal adalah 205⁰C. Rata-rata RON adalah >100 dengan syarat minimal 98. Sedangkan rata-rata RVP adalah 6,06 Psig untuk syarat RVP maksimal 6,5 Psig.
Pengujian Flash Point pada Sampel Biosolar B-30 dan Pengujian Total Acid Number (TAN) pada Sampel Feedstock C PT “X” Laboratorium Fuel Terminal BBM Bandung Group-Ujung Berung Yully Mulyani; Dian Farkhatus Solikha; Winingsih Oktaviani
Jurnal Migasian Vol 6 No 1 (2022): Jurnal Migasian
Publisher : LPPM Institut Teknologi Petroleum Balongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36601/jurnal-migasian.v6i1.198

Abstract

Flash Point is the lowest temperature of the fuel, where if the fuel is brought close to a fire, it will ignite easily. The sample used in the flash point test is biodiesel B-30, this flash point test method uses the ASTM D 93 standard by the Pensky-Martens closed cup flash point tool. Process variables that affect flash point testing are temperature, density and pressure. The results of the flash point test with the highest flash point value are sample 4 with a value of 65.0℃, while the results of the flash point test with the lowest flash point value are sample 1 with a value of 52.0. Total Acid Number (TAN) is a combination of weak and strong acids in fuel. The sample used in the Total Acid Number (TAN) test is diesel blending feedstock C, the Total Acid Number (TAN) test method uses the ASTM D 664 standard by the Automatic Potentiometric Titrator AT -710. The process variable that affects the Total Acid Number (TAN) test is the oxidation reaction. The results of the Total Acid Number (TAN) test, the lowest acid content is diesel + feedstock C 0.3% sample with a value of 0.05527 mg KOH/gr, while the highest acid content is diesel + feedstock C 0.2% sample. with a value of 0.06708 mg KOH/gr Keywords: American Standard Testing and Material (ASTM), Blending Feedstock C, Biosolar B-30, Flash Point, Total Acid Number (TAN).
Characterization and Optimization of Fe2O3 Extraction From Red Mud Using APDC ligan prastyo, elli; Yully Mulyani
Indonesian Journal of Chemical Science Vol. 13 No. 2 (2024): Indonesian Journal of Chemical Science
Publisher : Prodi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v13i2.11161

Abstract

The main component contained in the red mud is Fe2O3 which has the potential to be used as a catalyst in chemical reactions and can be used as a Fe3O4 catalyst manufacture. One method that can separate ferrous metal (Fe) from Red Mud is the extraction method using a chelating agent. This study studied the extraction of Fe2O3 from red mud by solvent extraction method using APDC ligands under various concentration. The variables studied are pH optimization, ligand concentration and extraction time. Analysis of red mud extraction results using FTIR, XRF, and XRD on various variables. Determination of the maximum wavelength of complex compounds formed between Fe(III) ions and ammonium pyrrolydine dithiocarbamate (APDC) ligands with pH variations of 1, 2, 3, 4, 5, and 6 in the wavelength range of 200 – 450 nm. The resulting complex compound is yellow and obtained a maximum wavelength of 347 nm. The greatest value of Fe2O3 absorbance is obtained at pH 1. The concentration of APDC ligands on the extraction of Fe-APDC complex compounds reached optimum conditions at a concentration of 0.5 mM with an optimum extraction time of 5 min. The FTIR spectrum formed in the Fe2O3 compound from the extraction is shown by the presence of vibration peaks in the regions of 447 cm-1 and 524 cm-1. Analysis of XRD Fe2O3 extraction results from red mud showed that the dominant phase was hematite (Fe2O3) followed by the minor phase of SiO2.
Co-Authors Dian Farkhatus Solikha Ivan Fadila Prastyo, Elli Winingsih Oktaviani