Yunantha, Sovila Deailova El (2016) Memaksimalkan Profit Dengan Memanfaatkan Kelebihan Gas Coke Oven Dan Gas Blast Frunace Di PT X. Undergraduate thesis, Institut Technology Sepuluh Nopember.
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Abstract
PT X is currently struggling on its steel business since the price of steel
has been going worse due to Chinese’s steel oversupply and natural gas (NG)
price has been going high and it has been getting noncompetitive, whereas NG
cost takes up to 49% of the expense in production that company should spend. To
overcome the critical matters, on early of July 2012, PT X desired to execute
expansion program by constructing Blast Furnace Complex. There will be 32,600
NCMH excess gas coming from Blast Furnace Complex named Blast Furnace
Gas (BFG) and 11,722 NCMH from Coke Oven Plant named Coke Oven Gas
(COG). The company thinks of utilizing the excess COG and BFG to combustion
process in their plants. But the problem are that the calorific of BFG, COG, and
natural gas are different, there will be investment and operational cost that are
different for each plant if they are to get the allocation of the excess gas, and the
limited amount of excess COG and BFG. This research aims to build optimization
model of excess Coke Oven Gas and Blast Furnace Gas allocation to maximize
total profit of production plants. Based on the valuation and optimization model
and comparison between location scenario A and B, the result is to allocate the
gas to Billet Steel Plant (NG 7,276 NCMH, 5,035 NCMH BFG, and 3,677
NCMH COG), Cold Rolling Mill (NG 9,513 NCMH, 6,584 NCMH BFG, and
4,808 NCMH COG), and Wire Rod Mill (NG 4,406 NCMH, 3,218 NCMH BFG,
and 2,404 NCMH COG) with total profit USD 44,900,365.69.
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PT X sedang mengalami kesulitan dalam bisnis bajanya sejak harga baja
turun secara drastis akibat suplai berlebihan dari Cina dan harga gas alam semakin
tinggi, yang membuat produk baja tidak kompetitif, padahal gas alam memakan
hingga 49% pada biaya produksi yang perusahaan habiskan. Untuk mengatasi
masalah kritis ini, pada bulan Juli 2012, PT X memutuskan untuk menjalankan
program ekspansi dengan membangun Blast Furnace Complex. Akan ada 32,600
NCMH kelebihan gas yang datang dari Blast Furnace Complex bernama Blast
Furnace Gas (BFG) dan 11,722 NCMH dari pabrik Coke Oven bernama Coke
Oven Gas (COG). Perusahaan berpikir untuk memanfaatkan kelebihan COG dan
BFG pada proses pembakaran di pabrik-pabriknya. Namun permasalahannya
adalah kalor pada BFG, COG, dan gas alam berbeda, akan ada investasi dan biaya
operasi yang berbeda untuk setiap pabrik jika mereka akan mendapat alokasi
kelebihan gas, dan keterbatasan jumlah kelebihan COG dan BFG. Penelitian ini
bertujuan untuk membangun model optimasi alokasi kelebihan COG dan BFG
untuk memaksimalkan total profit pabrik produksi. Berdasarkan hasil model
keuangan dan optimasi, juga perbandingan antara skenario lokasi A dan B,
hasilnya adalah mengalokasikan gas ke pabrik baja billet (gas alam 7,276 NCMH,
5,035 NCMH BFG, and 3,677 NCMH COG), pabrik baja lembaran dingin (gas
alam 9,513 NCMH, 6,584 NCMH BFG, and 4,808 NCMH COG), dan pabrik baja
kawat (gas alam 4,406 NCMH, 3,218 NCMH BFG, and 2,404 NCMH COG),
dengan total profit USD44,900,365.69
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSI 669.141 3 Yun p |
| Uncontrolled Keywords: | blast furnace gas, coke oven gas, financial modeling, optimization, profit |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN677 Blast furnaces. |
| Divisions: | Faculty of Industrial Technology > Industrial Engineering > 26201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 12 Feb 2020 03:49 |
| Last Modified: | 12 Feb 2020 03:49 |
| URI: | http://repository.its.ac.id/id/eprint/74831 |
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