Pra-Desain Pabrik LNG Di Offshore

Hakim, Alhafiz Taufiqul and Jasmine, Aisyah Putri Prameswari (2023) Pra-Desain Pabrik LNG Di Offshore. Other thesis, Institut Teknologi Sepulu Nopember.

Text 02211940000170_02211940000193-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2025. Download (4MB) | Request a copy

Abstract

Prospek industri gas bumi di Indonesia sangat besar, mengingat Indonesia merupakan negara yang memiliki cadangan gas bumi cukup besar yaitu 62,4 triliun kaki kubik, dimana 43,6 triliun kaki kubik terbukti. Namun, beberapa cadangan gas di Indonesia belum tereksploitasi karena kondisi geografis yang tidak bersahabat atau kandungan gas bumi dari beberapa sumber relatif kecil sehingga tidak dapat diolah secara komersial. Pendirian Pabrik LNG di offshore merupakan solusi untuk memaksimalkan pemanfaatan sumber daya gas bumi. Pabrik LNG di offshore menggunakan kapal yang dirancang sebagai fasilitas terapung dan prosedur desainnya sendiri tidak jauh berbeda dengan terminal darat. Kilang LNG lepas pantai yang telah dirancang sebelumnya direncanakan akan mulai beroperasi pada tahun 2025 dengan kapasitas produksi sebesar 2,5 MPTA. Lokasi pendirian kilang ini direncanakan di kawasan blok Masela karena ketersediaan gas bumi yang melimpah dan belum termanfaatkan. Dalam memenuhi kapasitas tahunan, kilang beroperasi secara kontinyu 24 jam/hari selama 330 hari dengan bahan baku gas bumi sebanyak 315128 kg/jam menghasilkan produk LNG sebanyak 230768 kg/jam, LPG sebanyak 5800 kg/jam, dan produk kondensat sebanyak 356 kg/jam. Proses produksi kilang LNG lepas pantai ini dapat diuraikan menjadi 4 proses, yaitu Acid gas removal, Dehydration Unit, Fractionation, dan Liquefaction. Dalam proses penghilangan gas asam, penyerapan digunakan dengan campuran MDEA dan MEA. Selanjutnya, absorbsi TEG dan Molekuler Sieve tipe 3A digunakan dalam proses dehidrasi. Dalam proses fraksinasi, kolom deethanizer dan debutanizer digunakan. Untuk dapat mendirikan pabrik dengan kapasitas produksi 2,5 MPTA diperlukan biaya investasi modal sebesar Rp 34,095,413,630,474, dengan estimasi penjualan produk sebesar Rp 21,981,811,817,938 per tahun.
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The The prospect of the natural gas industry in Indonesia is very large, considering that Indonesia is a country that has large enough natural gas reserves of 62.4 trillion cubic feet, of which 43.6 trillion cubic feet are proven. However, some gas reserves in Indonesia have not been exploited due to unfriendly geographical conditions or the natural gas content of some sources that are relatively small so they cannot be processed commercially. Establishing an offshore LNG Plant is the solution to maximizing natural gas resource utilization. Offshore LNG plant uses a ship designed as a floating facility and the design procedure itself is not much different from the onshore terminal. The pre-designed offshore LNG plant is planned to start operating in 2025 with a production capacity of 2.5 MPTA. The location of the establishment of this plant is planned in the Masela block area because of the abundant and untapped availability of natural gas. In fulfilling the annual capacity, the plant operates continuously 24 hours/day for 330 days with raw materials of 315128 kg of natural gas/hour producing LNG products of 230768 kg/hour, LPG of 5800 kg/hour, and condensate products of 356 kg/hour. The production process of this offshore LNG plant can be decomposed into 4 processes, namely Acid gas removal, Dehydration Unit, Fractionation, and Liquefaction. In the acid gas removal process, absorption is used with a mixture of MDEA and MEA. Furthermore, TEG absorption and Molecular Sieve type 3A are used in the dehydration process. In the fractionation process, the deethanizer and debutanizer columns are used. To be able to establish a plant with a production capacity of 2.5 MPTA, a capital investment cost of Rp 34,095,413,630,474 is needed, with an estimated product sales of Rp 21,981,811,817,938 per year.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Gas Alam, LNG, Offshore, Blok Masela, Natural Gas, LNG, Offshore, Masela Block
Subjects:	T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Chemical Engineering > 24201-(S1) Undergraduate Thesis
Depositing User:	Aisyah Putri Prameswari Jasmine/Alhafiz Taufiqul Hakim
Date Deposited:	01 Aug 2023 02:51
Last Modified:	01 Aug 2023 02:51
URI:	http://repository.its.ac.id/id/eprint/100727

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