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Pyrolysis of Vacuum Residue By Thermal and Catalytic Cracking Using Active Alumina Catalyst Yunanto, Isnandar; Haryati, Sri; Bustan, Muhammad Djoni
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 1 (2019): February 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

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Abstract

Vacuum Residue as feedstock derived from Pertamina Refinery Unit III was cracked in a fixed batch reactor under thermal and catalytic with single stage pyrolysis process using active alumina oxide (Al2O3) as a catalyst. The catalytic pyrolysis process carried out at a temperature 450°C in the presence of a varied catalyst to feed ratio 0.5-2.5 w/w% and varied of reaction times 5-30 minutes. While the thermal process performed under same operating conditions without presence the catalyst. The effect of alumina catalyst ratio on quantity and quality of yield product, the effect of operating conditions (reaction times) on yield distribution has been investigated. As a result, the cracked products are liquid, gas and coke residue. The yield of liquid products was dominant, the highest catalyst ratio showed the highest yield of the liquid product reached 63.1 wt% and the lowest yield of coke residue by 24.75 wt%. The highest yield of gas by 23.9 wt% was found at minimum catalyst used by 0.5 wt%
Study Of Palm Oil Residue Potential For Electricity Generation In South Sumatra Indonesia BUstan, Muhammad Djoni
Journal of Applied and Engineering Chemistry Vol 1, No 1 (2011): Journal of Applied and Engineering Chemistry
Publisher : Journal of Applied and Engineering Chemistry

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Abstract

This study was aimed to asses technical and economic potential of palm oil residue in south Sumatra taking into account availability, present usage, cost involved and other issues to review the state of art of palm oil residue conversion technology and identify suitable technologies for using in South Sumatra and to identify possible biomass electricity generation and carry techno-economical and environmental analysis of the system. The results show that the potential energy that can be extracted from oil palm solid residue in South Sumatera province taking the efficiency of biomass power generation is about 4.4 PJ/year.It can generate electricity up to 308 GWh/year. The waste water generated was about 1 Million meter cube POME/year. This POME can produce 11,058 m3 methane which is equivalent to 0.4 PJ/year and generate electricity as much as 150 GWh /year.Based on the scenario have been analyzed using GIS software shows that the potential area for 15 MW independent power plant constructions have been identified taking into account availability of feedstock and the maximum allowable distances. Analysis of the financial viability of the projects evaluated using RETScreen. The results for independent power plant showed that the project IRR is lower than the discount rate. However, with the implementation of CER for CDM, the project financialanalysis becomes viable. Moreover, other advantages that can be obtained from these projects are the reduction of GHG emission. Overall, the study clearly indicates the high potential for the generation and use of palm oil residue in South Sumatra.Keywords: Palm Oil residue, power plant, CHP, methane capture, RETScreen, GIS Software
STUDI PENGARUH UKURAN PARTIKEL RUTHENIUM DALAM KATALIS Ru/Al2O3PADA REAKSI HIDROGENASI KARBON MONOKSIDDA Mardwita, Mardwita; Bustan, Muhammad Djoni; Haryati, Sri
Jurnal Teknik Kimia Vol 22, No 4 (2016): Jurnal Teknik Kimia
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya

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Abstract

Reaksi hidrogenasi syngas yang berasal dari gas alam, batu bara dan biomassa telah lama digunakan untuk menghasilkan hidrokarbon rantai panjang dan alkohol. Hidrokarbon rantai panjang dapat diproses lebih lanjut menjadi synthetic fuel (bahan bakar sintetik) sebagai pengganti minyak bumi. Reaksi hidrogenasi tidak terlepas dari peran katalis. Salah satu katalis yang paling efektif untuk reaksi ini adalah ruthenium (Ru). Penelitian ini mempelajari Pengaruh ukuran partikelruthenium (Ru) dalam katalis ruthenium-alumina (Ru/Al2O3) yang digunakan dalam reaksi hidrogenasi karbon monoksida. Gas karbon monoksida (CO) dan hidrogen (H2) digunakan sebagai reaktan dengan perbandingan 2:1.Reaksi hidrogenasi karbon monoksida dilakukan dengan menggunakan reaktor fixed-bed yang terbuat dari pyrex glass. Tiga macam variasi jumlah ruthenium yaitu 7wt%, 10wt% dan 12wt%  digunakan dalam katalis Ru/Al2O3. Metode pembuatan katalis menggunakan metode impregnasi dan reaksi dilakukan dengan rentang temperatur dari 160 °C sampai 260 °C pada tekanan atmosferik. Pengambilan sample produk dilakukan setiap 30 menit dan produk dianalisa dengan menggunakan gas-chromatograph (GC). Hasil reaksi menunjukkan bahwa ruthenium dengan berat 12wt% menghasilkan konversi CO yang paling tinggi dibandingkan dengan katalis jumlah 7wt% dan 10wt% ruthenium. Kata Kunci : hidrogenasi karbon monoksida, ruthenium, katalis logam, deaktivasi katalis 
PENGARUH PROSES PENGINTEGRASIAN PANAS TERHADAP KONVERSI AMONIAK PADA INTERCOOLER REAKTOR AMONIAK DENGAN ANALISIS EKSERGI DAN PINCH Bustan, Muhammad Djoni
Reaktor Volume 13, Nomor 2, Desember 2010
Publisher : Dept. of Chemical Engineering, Diponegoro University

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Abstract

Amoniak merupakan salah satu senyawa penting yang banyak digunakan dalam industri kimia sebagai bahan baku dan produk. Salah satu unit pabrik amoniak yang dikaji membutuhkan gas alam sebesar 13.627 MMBTU sebagai bahan bakar (fuel) dan 24.570 MMBTU sebagai bahan baku untuk memproduksi 1 ton amoniak cair. Belum optimalnya sistim pendinginan antar unggun (bed) dan belum maksimalnya pemanfaatan panas hasil reaksi di reaktor amoniak menyebabkan konversi reaksi masih rendah. Analisis eksergi yang merupakan kombinasi antara Hukum Termodinamika I dan II, ?digunakan untuk mengetahui titik- titik kehilangan panas yang paling tinggi, yaitu pada bed 1, bed 2, dan bed 3. Analisis pinch yang diterapkan pada reaktor tersebut dapat dibuat suatu sistem jaringan alat penukar panas yang baru pada ammonia converter, sehingga diperoleh konversi yang lebih baik.