Article Per Year (5 Year)
p-Index From 2019 - 2024
0
P-Index
This Author published in this journals
All Journal Reaktor
J. P. Sitompul
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Studi Produksi Hidrasin VIA Proses Urea J. P. Sitompul
Reaktor Volume 09 No.1 Juni 2005
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4924.613 KB) | DOI: 10.14710/reaktor.9.2.20-25

Abstract

The use of hydrazine,N2H4 becomes very broad nowadays, in the production of polymer such as automobile air bags, in pharmacy, and in the water treatment for oxygen scavenge. Three commercial processes are available for hydrazine production , i.e. via Rasching-Olin, Ketazin, and Urea process. The operating condition for the later process is very mild compared to with the other two processes and hence requires simple processing equipments. This paper concerns with the kinetic study on production and on the effect of deactivator/ inhibitor during hydrazine bench-scale production via  Urea process. Operating condition are at 1 bar and at temperature range 5-100 0C. The yield of the hydrazine and its concentration with varying reactants, NaOH, hypochlorite, and urea during the cource of reaction are presented. Futher, the effect of gelatin as the deactivator toward hydrazine yield is futher examined. A kinetic model is proposed and used to predict yield of hydrazine. The predicted yield is in close agreement with the experimental yield.Keywords : hydrazine, bench-scale production, kinetic model, oxygen scavenger, inhibitor, geltine
Evaluasi Dan Modifikasi Proses Pemisahan Dan Pemurnian Etanol Hasil Fermentasi widayat widayat; J. P. Sitompul; T. H. Soerawidjaja
Reaktor Volume 6 No. 1 Juni 2002
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6127.6 KB) | DOI: 10.14710/reaktor.6.1.16-23

Abstract

Evaluasi dan modifikasi proses merupakan salah satu usaha untuk penghematan energy, yang dapat dilakukan untuk teknologi pinch. Evaluasi proses dilakukan terhadao tiga buah konfigurasi proses. Setiap konfigurasi proses terbentuk dari penggabungan proses Danish Distilleries dengan tiga buah sistem tiga kolom pemisahan etanol 95%. Konfigurasi proses 1 merupakanpenggabunagn proses Danish Distilleries dengan sistem pemisahan Othmer, penggabungan proses Danish Distilleris dengan proses Barbet sebagai konfigurasi proses 2 dan penggabungan proses Danish Distilleris dengan sistem pemisahan pada tekanan vakum sebagai proses 3. Kapasitas produksi etanol 95% ditetapkan 4x107 liter/tahun.hasil evaluasi proses menunjukkan kebutuhan kukus minimum/terkecil dicapai oleh proses 2, kemudian proses 1 dan proses 3, masing-masing mengonsumsi 3,23; 4,11; 4,79 kgkukus 3 atm/liter etanol. Evaluasi lebih lanjut dengan, ∆Tmin = 10 0C, peningkatan efisiensi energy diperoleh pada konfigurasi proses 1 sebesar 2,11% ( jika evaluasi melibatkan reboiler kolom pelucutan dan reboiler kolom pelucutan asetaldehid) dan 2,02% (jika tidak melibatkan) dan konfigurasi proses 2 ( jika evaluasi tidak melibatkan reboiler kolom pelucutan dan reboiler kolom pelucutan asetaldehid) dan 3 terjadi penurunan efisiensi energy. Kata kunci : evaluasi, modifikasi proses, teknologi pinch
Co-Authors T. H. Soerawidjaja widayat widayat