EVALUASI KINERJA FURNACE F-14-001 DI HIGH VACUUM UNIT (HVU) II PT PERTAMINA INTERNASIONAL REFINERY UNIT III

Abstract

ABSTRAK: PT. Kilang Pertamina Internasional RU III Plaju adalah salah satu bagian dari enam Refinery Unit yang terdiri dari dua proses utama berupa Primary Process dan Secondary Process. Pada prinsipnya proses pengolahan HVU II di PT. Kilang Pertamina Internasional RU III dilakukan dengan cara memisahkan fraksi-fraksi atas dasar perbedaan titik didih dan pada tekanan vakum. Di Unit HVU II tersebut terdapat furnace yang digunakan dalam proses pemisahan fraksi–fraksi minyak. Berdasarkan analisis perhitungan neraca massa dan panas terhadap data operasi yang diamati dari tanggal 27 Agustus – 15 Oktober 2024, nilai efisiensi termal yang didapatkan rata rata sebesar 81.97%. Efisiensi terendah pada periode  78.96%, dan paling tinggi adalah 84.06%, sedangkan nilai efisiensi termal furnace F-14-001 pada data desain sebesar 85%. Nilai dari efisiensi furnace dipengaruhi oleh beberapa faktor, antara lain kadar O₂ excess, laju alir feed, dan heat loss yang dihasilkan. Heat loss yang besar disebabkan oleh banyaknya panas yang hilang terbawa flue gas ke lingkungan dan berdampak menurunkan efisiensi termal furnace. Oleh sebab itu  diperlukan pengecekan dan pemeliharaan untuk memastikan APH (Air Pre Heater) masih berkerja dengan baik, serta mempertimbangkan rasio udara dan bahan bakar agar proses pembakaran lebih optimal.

Kata Kunci: Furnace, Heat loss, Air Pre Heater, O₂ excess, Efisiensi Termal

ABSTRACT: PT. Kilang Pertamina Internasional RU III Plaju is one of the 6 Refinery Units consisting of two main processes, namely the Primary Process and the Secondary Process. In principle, the HVU II processing process at PT. Kilang Pertamina Internasional RU III is carried out by separating fractions based on differences in boiling points and at vacuum pressure. In the HVU II Unit, there is a furnace used in the process of separating oil fractions. Based on the analysis of mass and heat balance calculations on operational data observed from August 27 - October 15, 2024, the average thermal efficiency value obtained was 81.97%. The lowest efficiency was in the period of 78.96%, and the highest was 84.06%, while the thermal efficiency value of the F-14-001 furnace in the design data was 85%. The value of furnace efficiency is influenced by several factors, including the level of excess O2, feed flow rate, and heat loss produced. Large heat losses are caused by the large amount of heat lost to the flue gas and the environment, reducing the furnace's thermal efficiency. Therefore, inspections and maintenance are necessary to ensure the Air Preheater (APH) is still functioning properly, as well as to consider the air-to-fuel ratio for optimal combustion..

Keywords: Furnace, Heat loss, Air Pre Heater, O₂ excess, Thermal Efficiency