Studi Pengendalian Temperatur HTS Effluent Pada Plant Amonia Pabrik 1B PT. Petrokimia Gresik

Sholichah, Imanda Cyntya Mar'atus (2026) Studi Pengendalian Temperatur HTS Effluent Pada Plant Amonia Pabrik 1B PT. Petrokimia Gresik. Project Report. [s.n.]. (Unpublished)

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Abstract

Plant Amonia Pabrik 1B PT Petrokimia Gresik menggunakan teknologi KBR Purifier™ Process dalam produksi amonia berbasis reforming gas alam. Pada unit shift conversion, temperatur HTS Effluent perlu dikendalikan sebelum memasuki Low Temperature Shift (LTS) agar kondisi operasi dan kinerja katalis tetap terjaga. Studi ini dilakukan untuk mengevaluasi kinerja sistem kontrol temperatur HTS Effluent berdasarkan data historis Distributed Control System (DCS), dokumen proses, dan data operasi periode Maret–April 2026. Evaluasi dilakukan menggunakan parameter Error Steady State (Ess), Root Mean Square Error (RMSE), standar deviasi, dan akurasi. Hasil studi menunjukkan bahwa sistem menggunakan metode split-range control dengan TIC-1011 sebagai kontroler utama yang mengatur TV-1011A dan TV-1011B. Nilai RMSE menurun dari 9,80°C menjadi 5,21°C, sedangkan nilai Ess menurun dari 9,67°C menjadi 5,03°C. Standar deviasi pada bulan April berada pada kisaran 0,48–0,69°C dengan akurasi sistem kontrol sebesar 95,04–97,42%. Temperatur HTS Effluent berada pada rentang 195,49–208,41°C dan masih berada dalam rentang operasi katalis Low Temperature Shift (LTS) serta di bawah batas maksimum desain peralatan sebesar 275°C sehingga kondisi operasi sistem kontrol masih dapat dikategorikan aman.
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The Ammonia Plant at Plant 1B PT Petrokimia Gresik uses KBR Purifier™ Process technology in the production of ammonia based on natural gas reforming. In the conversion shift unit, the HTS Effluent temperature needs to be controlled before entering Low Temperature Shift (LTS) to maintain the operating condition and performance of the catalyst. This study was conducted to evaluate the performance of the HTS Effluent temperature control system based on historical Distributed Control System (DCS) data, process documents, and operation data for the period March–April 2026. Evaluation was carried out using Steady State Error (Ess), Root Mean Square Error (RMSE), standard deviation, and accuracy parameters. The results of the study showed that the system used a split-range control method with TIC-1011 as the main controller that controlled the TV-1011A and TV-1011B. The RMSE value decreased from 9.80°C to 5.21°C, while the Ess value decreased from 9.67°C to 5.03°C. The standard deviation in April was in the range of 0.48–0.69°C with a control system accuracy of 95.04–97.42%. HTS Effluent temperatures are in the range of 195.49–208.41°C and are still within the operating range of the Low Temperature Shift (LTS) catalyst and below the maximum equipment design limit of 275°C so that the operating conditions of the control system can still be categorized as safe.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Amonia, HTS Effluent, Split Range Control
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ212 Control engineering systems. Automatic machinery (General) T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. T Technology > TJ Mechanical engineering and machinery > TJ222 Supervisory control systems. T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers
Divisions:	Faculty of Vocational > Instrumentation Engineering
Depositing User:	Imanda Cyntya Mar'atus Sholichah
Date Deposited:	07 Aug 2026 04:07
Last Modified:	07 Aug 2026 04:07
URI:	http://repository.its.ac.id/id/eprint/137994

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