Artikel Jurnal :: Kembali

Artikel Jurnal :: Kembali

Catalytic effect of k2co3 in steam gasification of lignite char on mole ratio of h2/co in syngas

Dijan Supramono, Ricky Kristanda S uwignjo (Faculty of Engineering, Universitas Indonesia, 2015)

 Abstrak

To fulfill the requirement for synthetic fuel (synfuel) production in Fischer Tropsch process, in which syngas feed to the process has H2/CO mole ratio approaching 2, a lignite coal gasification is needed to satisfy this requirement. In this research, char particles were prepared by pyrolysis of lignite coal at controlled heating rates to obtain the highest possible surface area for gasification. The gasification used char with surface area of 172.5 m2/g, and catalyst K2CO3 in a fixed bed reactor. Steam/char mass ratio used in this research was varied 2.0; 3.0; 4.0 and the gasification temperature was varied 675, 750, 825oC. The result of this research showed that the highest H2/CO mole ratio of 2.07 corresponding to the mole ratio of gas yield/carbon of 1.13 was achieved at gasification temperature of 675oC using catalyst K2CO3 and at steam/char mass ratio of 2.0. However, at the same gasification conditions, but using no catalyst, H2/CO mole ratio and corresponding mole ratio of gas yield/carbon achieved were 3.02 and 0.42 respectively. This research found that the addition of catalyst K2CO3 in lignite coal char gasification adversely reduces mole ratio H2/CO ratio compared to that without catalysis. It is suspected that the high composition of mineral ash in ash reacts with K2CO3 catalyst which renders Boudouard reaction to considerably compete with water-gas reaction. The increases of gasification temperature and steam/carbon ratio both lower the mole ratio of H2/CO in syngas.

 Metadata

Jenis Koleksi : Artikel Jurnal
No. Panggil : UI-IJTECH 6:1 (2015)
Entri utama-Nama orang :
Subjek :
Penerbitan : Depok: Faculty of Engineering, Universitas Indonesia, 2015
Sumber Pengatalogan : LibUI eng rda
ISSN : 20869614
Majalah/Jurnal : International Journal of Technology
Volume : Vol. 6, No. 1, January 2015: Hal. 22-30
Tipe Konten : text
Tipe Media : unmediated
Tipe Carrier : volume
Akses Elektronik : https://doi.org/10.14716/ijtech.v6i1.208
Institusi Pemilik : Universitas Indonesia
Lokasi : Perpustakaan UI, Lantai 4 R. Koleksi Jurnal
  • Ketersediaan
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No. Panggil No. Barkod Ketersediaan
UI-IJTECH 6:1 (2015) 08-23-59060752 TERSEDIA
Ulasan:
Tidak ada ulasan pada koleksi ini: 9999920530418
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