Analisis perilaku hidrodinamik kolom absorber pada laju alir gas umpan rendah terhadap perubahan laju alir pelarut dan wash water pada unit penghilangan senyawa sulfur

https://doi.org/10.22146/jrekpros.73441

Tri Partono Adhi(1), Aditya Nurfebriartanto(2*), Antonius Indarto(3), Muhammad Agus Kariem(4)

(1) Program Studi Teknik Kimia, Fakultas Teknologi Industri, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132
(2) Program Studi Teknik Kimia, Fakultas Teknologi Industri, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132
(3) Program Studi Teknik Kimia, Fakultas Teknologi Industri, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132 Program Studi Teknik Bioenergi dan Kemurgi, Fakultas Teknologi Industri, Institut Teknologi Bandung, Jalan Let. Jen. Purn. Dr. (HC). Mashudi No.1/ Jl. Raya Jatinangor Km 20,75 Sumedang 45363
(4) Program Studi Teknik Mesin, Fakultas Teknik Mesin dan Dirgantara, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132
(*) Corresponding Author

Abstract


Metode absorpsi merupakan metode yang banyak digunakan dalam pemurnian gas alam dari senyawa pengasamnya. Unit pemisahan senyawa sulfur pada PT BCD dirancang untuk menurunkan konsentrasi H2S pada gas alam dari 9957 ppm menjadi kurang dari 10 ppm dengan laju alir gas umpan pada rated condition adalah 327,7 MMSCFD. Keseluruhan sistem pengolahan gas didesain dengan turndown ratio 40%. Karena alasan operasi, laju alir gas umpan perlu diturunkan hingga 20% kapasitas desain (65,54 MMSCFD). Analisis dilakukan untuk mengetahui perilaku hidrodinamik kolom absorber dan sistem pendukungnya pada pengoperasian di 20% kapasitas desain. Simulasi dilakukan menggunakan perangkat lunak ASPEN HYSYS V11 untuk mengetahui parameter operasi kolom absorber dan kondisi untuk mendukung pengoperasian di 20% kapasitas desain. Dengan desain operasi peralatan saat ini, weeping terjadi pada laju alir gas umpan 28% desain (91,59 MMSCFD). Pada laju alir gas umpan 28% desain, wash water pump sudah mencapai kapasitas minimum, yaitu 78 gpm. Semakin kecil laju alir gas umpan, maka laju sirkulasi wash water perlu dikurangi untuk menghindari weeping. Untuk dapat beroperasi di gas umpan 20% desain, kapasitas wash water pump perlu diturunkan hingga 25 gpm.


Keywords


penghilangan senyawa sulfur; pompa sirkulasi; rentang operasi; senyawa sulfur

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DOI: https://doi.org/10.22146/jrekpros.73441

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