DOI: https://doi.org/10.14710/jpii.2026.32311

Analisis Terjadinya Liquid Condensate Pada Plant CO2 Removal dan DHU System SP Karangbaru Kapasitas 5 MMSCFD

*Rikky Andreanto  -  Program Studi Program Profesi Insinyur Fakultas Teknik, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Luqman Buchori  -  Program Studi Program Profesi Insinyur Fakultas Teknik, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Widayat Widayat  -  Program Studi Program Profesi Insinyur Fakultas Teknik, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Received: 7 Mar 2026; Revised: 10 Apr 2026; Accepted: 13 Apr 2026; Available online: 18 Apr 2026; Published: 8 Sep 2026.

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Abstract

Penelitian ini bertujuan untuk menganalisis penyebab utama terbentuknya liquid condensate atau crude oil pada sistem CO2 Removal dan Dehydration Unit (DHU) di SP Karangbaru berkapasitas 5 MMSCFD. Fenomena kondensasi hidrokarbon ditemukan menyebabkan gangguan operasi seperti fouling, carry-over dan penurunan efisiensi pengeringan gas. Metode penelitian menggunakan pendekatan analisis deskriptif-kuantitatif berbasis simulasi proses dan evaluasi termodinamika dengan perangkat lunak Aspen HYSYS, menggunakan model Peng–Robinson Equation of State (PR-EOS). Data lapangan mencakup tekanan, suhu, laju alir, serta komposisi gas untuk memverifikasi model kesetimbangan fasa (phase envelope). Hasil penelitian menunjukkan bahwa batas dew point hidrokarbon terjadi pada tekanan 95 psig dan suhu 123°F, sementara kondisi operasi aktual (82 psig, 108°F) telah berada dalam zona dua fasa gas-cair. Penyebab utama terbentuknya liquid condensate adalah kombinasi antara tekanan dan suhu yang rendah, efisiensi regenerasi TEG yang tidak optimal, serta kandungan hidrokarbon berat (C5+≈2,8 mol%). Rekomendasi teknis yang diusulkan meliputi pengendalian tekanan ≥95 psig, suhu operasi ≥120°F, optimasi regenerasi TEG, serta pemasangan sistem pemantauan dew point secara real-time untuk mencegah terjadinya kondensasi berulang.

 

Kata kunci: CO2 removal, DHU system, liquid condensate, phase envelope, TEG regeneration

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Section: Laporan Studi Kasus
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