Politeknik Dergisi 2147-9429 Gazi Üniversitesi 10.2339/politeknik.1730604 Energy Generation, Conversion and Storage (Excl. Chemical and Electrical) Enerji Üretimi, Dönüşüm ve Depolama (Kimyasal ve Elektiksel hariç) Entegre Çok Akışlı Bir LNG Gazlaştırma Tesisinin Tasarımı ve Simülasyonu: Termodinamik Yaklaşım Design and Simulation of an Integrated Multi-Stream LNG Regasification Plant: A Thermodynamic Approach https://orcid.org/0000-0003-4934-072X Janaani Ahmed KARABUK UNIVERSITY https://orcid.org/0000-0002-4575-8988 Özkaymak Mehmet KARABUK UNIVERSITY https://orcid.org/0000-0002-9397-3949 Canan Ahmet KARABÜK ÜNİVERSİTESİ https://orcid.org/0000-0003-1811-1975 Kayataş Ongun Göknur BOLU ABANT İZZET BAYSAL ÜNİVERSİTESİ, BOLU TEKNİK BİLİMLER MESLEK YÜKSEKOKULU, ELEKTRİK VE ENERJİ BÖLÜMÜ https://orcid.org/0000-0003-2274-3481 Coşkun Tuba KARABUK UNIVERSITY 03 29 2026 29 3 1 8 06 30 2025 08 19 2025 Copyright © 1998, Politeknik Dergisi 1998 Politeknik Dergisi

Bu çalışmada, sıvılaştırılmış doğalgaz (LNG) gazlaştırma süreci, her biri bağımsız olarak gerçekleştirilen simülasyon adımlarıyla analiz edilmiştir. LNG gazlaştırma sisteminin ayrıntılı bir simülasyonunu oluşturmak ve operasyonel adımları tanımlamak amacıyla Aspen HYSYS yazılımı kullanılmıştır. Giriş koşullarında -160 °C sıcaklık ve 100 kPa basınca sahip LNG öncelikle bir pompaya gönderilmiş, ardından, iki aşamalı bir ısı değişim sürecine tabi olmuştur. İlk aşamada, kompakt bir ısı değiştirici aracılığıyla sıcak buhar kullanılarak LNG'nin sıcaklığı artırılmış ve sıvıdan gaz faza geçişi başlatılmıştır. Bu aşamada, giriş basıncı 5 bar, sıcaklığı 151 °C ve debisi 210 kg/saat olan doymuş buhar kullanılmış; süreç sonucunda yaklaşık 7 bar gaz çıkış basıncı elde edilmiştir. İkinci aşamada ise sıcaklık 60 °C’ye kadar yükseltilerek LNG’nin tamamen buharlaşması sağlanmıştır. Nihai ürün olarak elde edilen doğalgaz , 60 °C sıcaklık ve 1200 kPa basınç koşullarında ticari kullanıma uygun hale gelerek sistemden çıkmıştır.

In this study, each analysis begins with an independent simulation of the LNG regasification process. Aspen HYSYS was employed to model and construct a detailed simulation of the LNG regasification system, aiming to describe the operational steps involved in the gasification of LNG. The feed LNG, at a temperature of -160 °C and a pressure of 100 kPa, was first introduced into a pump. Subsequently, it was directed through two heat exchangers, where the initial stage involved a compact heat exchanger utilizing hot steam to raise the temperature of the LNG and initiate its phase transition from liquid to gas. In this stage, steam at 151 °C and a flow rate of 210 kg/h was supplied at an inlet pressure of 5 bar, resulting in a gas output pressure of approximately 7 bar. In the second stage, the temperature was further increased to 60 °C to achieve complete vaporization of the LNG. The final product, suitable for commercial use, was natural gas at 60 °C and 1200 kPa.

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