Upaya Peningkatan Efisiensi Energi di Pupuk Kujang

https://doi.org/10.22146/jrekpros.553

Maryono(1*)

(1) 
(*) Corresponding Author

Abstract


ACES21 adalah teknologi proses pembuatan urea yang merupakan proses terbaru dari Toyo Engineering Corp (TEC) dengan berbagai keuntungan dibandingkan dengan teknologi sebelumnya. ACES21 dirancang dengan biaya investasi dan penggunaan energi konsumsi yang rendah. Dibandingkan dengan proses sebelumnya beberapa penyempurnaan dilakukan antara lain reaktor urea yang pada proses sebelumnya dipasang pada ketinggian 20–22 meter di atas tanah, pada ACES21 reaktor urea dipasang pada ground level sehingga dapat menurunkan biaya konstruksi. Selain itu, kondisi proses di unit sintesa dimana pada unit ini terjadi reaksi pembentukan urea dioperasikan pada tekanan yang relatif lebih rendah dari sebelumnya. Akibat penurunan tekanan ini, terjadi penurunan konsumsi energi pabrik urea secara total. Selain itu untuk kemudahan dan kehandalan operasi, pabrik urea dilengkapi beberapa peralatan pengamatan langsung yang belum banyak diaplikasikan di dunia seperti N/C monitoring, leak detector monitoring, dan analyzer monitoring (ACES21, On-line Monitoring, Ground Level). Dengan beroperasinya Pupuk Kujang IB yang menggunakan proses ACES21, konsumsi energi yang semula 8,324 Gcal/ton urea menjadi 5,623 Gcal/ton urea, sehingga terjadi penghematan yang sangat signifikan dibanding proses sebelumnya.

Kata kunci: ACES21, sintesis urea, reaktor, energi

ACES21 is an urea manufacturing process technology which is the latest process of Toyo Engineering Corp. (TEC) with some advantages compared with previous technologies. ACES21 is designed with low investment cost and low energy consumption. Compared with the previous process some improvements have been done such as urea reactor that in the previous process was installed at a height of 20-22 meters above the ground, on ACES21 urea reactor was installed at ground level so that it can reduce construction costs. The synthesis process conditions where the urea formation reaction occurs is operated at relatively lower pressure than before that eventually reduces energy consumption. In addition to the ease and reliability of the operation, the urea plant has several on-line monitoring equipment that has not been widely applied such as nitrogen/carbon ratio monitoring, leak detector monitoring, and analyzer monitoring (ACES21, On-line Monitoring, ground Level). With the operation of Kujang IB that already uses ACES21 process, the energy consumption which in the previous process (Kujang 1A) was originally 8.324 Gcal/tonne of urea is reduced to 5.623 Gcal/tonne of urea, resulting in a significant energy saving.

Key words: ACES21, urea synthesis, reactor, energy.

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DOI: https://doi.org/10.22146/jrekpros.553

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