PRARANCANGAN PABRIK KIMIA Acrylamide dari Acrylonitrile KAPASITAS 45.000 TON PERTAHUN

AGATHA PREVIAN CHRISDITYA, Ir. Hary Sulistyo, SU., Ph.D

2014 | Skripsi | TEKNIK KIMIA

Acrylamide dapat diperoleh dengan mereaksikan acrylonitrile dengan air yang biasa disebut dengan proses hidrasi. Reaksi yang berlangsung pada reaktor fixed bed pada suhu 120 o C dan tekanan 4 atm. Produk acrylamide kristal memiliki kemurnian hingga 99% massa. Untuk menghasilkan acrylamide kristal 45.000 ton/tahun diperlukan acrylonitrile sebanyak 4695,4502 kg/jam dan air sebanyak 34.038,9514 kg/jam. Pabrik acrylamide direncanakan akan didirikan di Cilegon, Jawa Barat dengan luas lahan 30.000 m 2 dengan jumlah tenaga kerja sebanyak 180 orang. Pabrik dirancang dengan kapasitas 45.000 ton/tahun dan beroperasi secara kontinyu selama 24 jam sehari dan 330 hari setahun. Dalam proses tersebut dibutuhkan bahan bakar sebanyak 608,109 ton/tahun, kebutuhan air sungai sebanyak 9258,3333 kg/jam, kebutuhan listrik 785,41 kVA, dan kebutuhan total steam sebanyak 2.605,13 kg/jam. Modal tetap yang dibutuhkan sebesar $15.783.348,09+Rp38.238.864.773,3 sedangkan modal kerja sebesar $17.364.955,846+Rp4.681.764.712,57. Keuntungan sebelum pajak sebesar Rp113.120.117.116,58 dan keuntungan setelah pajak Rp56.560.058.558,29. Dari hasil perhitungan diperoleh Return on Investment (ROI) sebelum pajak 62,74% dan sesudah pajak sebesar 31,37%. Pay Out Time (POT) sebelum pajak 1,37 tahun dan setelah pajak 2,42 tahun. Break even point (BEP) pada 45,31% kapasitas dan Shut Down Point pada 33,98% kapasitas. Discounted Cash Flow Rate of Return (DCFRR) sebesar 34,57%. Berdasarkan hasil perhitungan evaluasi ekonomi tersebut, maka parik acrylamide dengan kapasitas 45.000 ton/tahun cukup menarik untuk dikaji lebih lanjut.

Acrylamide can be obtained by reacting acrylonitrile with water which is called the hydration process. Reaction that takes place in a fixed bed reactor at a temperature of 120 ° C and a pressure of 4 atm. Acrylamide crystalline products have purity of up to 99% by mass. To produce crystalline acrylamide 45,000 tons / year acrylonitrile much needed 4695.4502 kg / hour and as much water 34038.9514 kg / hour. Acylamide plant is planned to be established in Cilegon, Banten, with an area of 30.000m 2 of land and total 180 employees. The plant is designed with a capacity of 45.000 tons/year and operates for 24 hours a day and 330 days a year continously. In the process takes as much fuel as 608.109 tons / year, as the river water needs 9258.3333 kg/hour, 785,41 kVA electrical needs, and the needs of the total steam as much as 2605.13 kg / hour. Fixed capital required is $ 15,783,348.09 + Rp38.238.864.773, 3 whereas working capital of $ 17,364,955.846 + Rp4.681.764.712, 57. Profit before tax is Rp113.120.117.116, 58 and a profit after tax is Rp56.560.058.558, 29. From the calculations, Return on Investment (ROI) 62.74% before tax and after tax of 31.37%. Pay Out Time (POT) before tax is 1.37 years and after tax is 2.42 years. Break even point (BEP) at 45.31% capacity and Shut Down Point at 33.98% capacity. Discounted Cash Flow Rate of Return (DCFRR) of 34.57%. Based on the economic evaluation, the acrylamide plant with a capacity of 45,000 tons / year is quite interesting to study further.

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