PRARANCANGAN ADSORBER TOWER KAPASITAS 5 MMSCFD PADA PT X
DOI:
https://doi.org/10.53026/sntem2025.v5i1.558Keywords:
gas alam, dehidrasi, adsorber tower, molecular sieve, regenerasiAbstract
Dehidrasi gas alam merupakan proses penting dalam mengurangi kadar air pada aliran gas untuk menghindari pembentukan hidrasi dan korosi pada peralatan. Penelitian ini merancang Dehydration Unit (DHU) berkapasitas 5 MMSCFD dengan sistem adsorber tower menggunakan molecular sieve UOP 4A-DG sebagai adsorben utama. Data proses diambil dari kondisi operasi PT X dengan kadar uap air umpan 28 lb/MMSCF dan target produk 0.05 lb/MMSCF. Perancangan mengacu pada GPSA Engineering Data Book (12th Edition, 2004) dan ASME Section VIII Division II. Hasil perhitungan menunjukkan diameter adsorber 1.8 ft dan tinggi total 15.06 ft dengan ketebalan dinding 0.5 inci serta berat vessel 2858.97 lb. Nilai pressure drop 5 psi menunjukkan kondisi operasi yang aman dan efisien. Adsorben memiliki densitas 40–44 lb/ft³ dan kapasitas penyerapan air 13% dari beratnya. Proses regenerasi dilakukan pada suhu 429 °F dengan kebutuhan energi panas 856,705 Btu atau 20.7 kW serta laju alir gas regenerasi 1042.1 lb/jam. Nilai pressure drop proses regenerasi 0.01 psi/ft menunjukkan proses regenerasi aman dan efisien. Secara keseluruhan, desain ini memenuhi spesifikasi teknis dan menunjukkan kinerja optimal dalam menghasilkan gas kering sesuai standar industri.
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