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All Journal Gema Wiralodra Jurnal Energi Baru dan Terbarukan Jurnal Profesi Insinyur Universitas Lampung Jurnal Global Ilmiah
Asminah, Ninin
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Journal : Gema Wiralodra

 1 
Analysis of Furnace Performance Efficiency 201-H-001 Prefractionation Unit PT Trans-Pacific Petrochemical Indotama Tuban-East Java Nurkhopipah, Siti; Hapsari, Farlina; Asminah, Ninin
Gema Wiralodra Vol. 15 No. 2 (2024): Gema Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/gw.v15i2.698

Abstract

Petroleum processing generally begins with a heating process, so equipment is needed to heat the crude oil before entering the fractionation column. This heating is closely related to the separation of fractions based on differences in boiling points. Heating at a fairly high temperature is used by a furnace, where the heat source comes from gas fuel. Based on the discussion above, furnace efficiency is fascinating to calculate as an indication of whether or not the furnace is operational. This efficiency calculation is also a reference for PT. Trans-Pacific Petrochemical Indotama to shut down and repair equipment, especially furnaces. This research aims to understand the furnace's working principles, determine the parameters that influence furnace performance, and calculate the efficiency of Furnace 201-H-001 in the Prefractionation unit. The results obtained in this research are that there are variables used to calculate thermal furnace efficiency. These variables are air temperature, fuel gas temperature, fuel gas flow, flue gas temperature, theoretical air requirements, and excess air in terms of efficiency and combustion reactions. The results of the furnace efficiency calculations were 78.03%, 77.34%, and 77.75% respectively. The minimum thermal efficiency value ranges from 75 - 80%, so it can be said that the furnace in this research is still suitable for use.
Evaluation of optimal time blending process on medripal 412 And Prima XP SAE 20W – 50 samples with homogenity test Asminah, Ninin; Prasetyo, Elli; Dhamayanthie, Indah
Gema Wiralodra Vol. 14 No. 2 (2023): gema wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/gw.v14i2.431

Abstract

Prima XP SAE 20W - 50 is a multigrade lubricant used for gasoline and Medripal 412 engine lubricants used for marine industry engines which are non-carcinogenic and environmentally friendly. The main factor in testing lubricants is the Blending process, which is the process of mixing base oil with additives. In the blending process, an inhomogeneous lubricant was found which caused the lubricant test not to comply with specifications. This experiment aims to determine the optimal time of the blending process with the KAN homogeneity test method. Homogeneity testing can be seen from the viscosity value of the lubricant. So the optimum time for the blending process is needed for the continuity of the production process of this lubricant. Medripal 412 products have an optimum blending time of 30 minutes with a viscosity value at 100 C ranging from 14.79 mm2 / s based on the SNI 7069.1 Th. 2012, the product specification value of Medripal 412 is 12.5 - <16.3 mm2 / s and the Prima XP SAE 20W - 50 product has an optimum blending time of 45 minutes with a viscosity value at 100oC of 20.28 mm2 / s based on the SNI 7069.1 Th. 2012, the value of the Prima XP SAE 20W - 50 product specification is 5.6 - <21.9 mm2 / s. This shows that the lubricant is by the standard quality standards set by the company and the government so that the lubricant product is still suitable for use.
The Effect of Coke Yield on The Performance of Regenerator 15-R-103/104 in The Residue Catalytic Unit (RCU) at PT Kilang Pertamina International RU VI Balongan Nurkhopipah, Siti; Asminah, Ninin; Farhan, Farhan
Gema Wiralodra Vol. 16 No. 3 (2025): Gema Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/gw.v16i3.854

Abstract

Regenerator 15-R-103/104 in the Residue Catalytic Unit (RCU) at PT Kilang Pertamina Internasional RU VI Balongan plays an important role in the Residue Catalytic Cracking (RCC) process by burning coke on the surface of the spent catalyst to restore catalyst activity and provide heat for the endothermic reaction. This study analyzes the effect of coke yield on regenerator performance using mass balance, heat balance, and thermal efficiency calculations based on Universal Petroleum Products (UOP) standards, with daily operational data for the period 1–28 January 2025. The results show that the total mass input of coke and combustion air is balanced with the flue gas output, indicating an efficient combustion process. The heat balance reveals a balanced energy distribution between heat carried by the flue gas, absorbed by the catalyst cooler, and lost due to radiation. The regenerator efficiency for each week was obtained at 57.98%, 58.07%, 56.13%, and 58.93%, with an average of 58%. The increase in coke yield was generally followed by an increase in the corrected heat of combustion, indicating a positive relationship between the amount of coke formed and the heat energy produced. These findings provide an important basis for optimizing regenerator performance in RCC systems.
Co-Authors Dhamayanthie, Indah Farhan Farhan Hapsari, Farlina Mulyani, Yully Nurkhopipah, Siti Nurya, Nurya Okta, Muhammad Fa’iq Prasetyo, Elli Prastyo, Elli