Pemodelan dan Simulasi Stripping Gas Karbondioksida (Co2) dari Larutan Methyldiethanolamine (MDEA) Berpromotor dalam Kolom Berpacking

Kurniawan, Muhammad Fikri and Setyawan, Gilang Adi (2018) Pemodelan dan Simulasi Stripping Gas Karbondioksida (Co2) dari Larutan Methyldiethanolamine (MDEA) Berpromotor dalam Kolom Berpacking. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Gas karbondioksida (CO2) pada suhu yang sangat rendah (-78oC, 1 atm) akan membeku dan menyumbat sistem-sistem perpipaan. Pada proses sintesa amoniak, gas CO2 bersifat racun untuk katalis karena dapat menutup bagian yang aktif dari katalis sehingga menghambat kinerja dari katalis. Proses pemisahan gas CO2 terdiri dari proses absorbsi dan proses stripping. Proses stripping merupakan proses regenerasi pelarut yang kaya gas CO2 (rich solution). Regenerasi pelarut sangat penting agar pelarut dapat digunakan kembali untuk proses absorbsi. Pada penelitian ini akan dilakukan pemodelan dan simulasi proses stripping gas CO2 dari larutan MDEA(20%volume) berpromotor dalam kolom berpacking menggunakan software MATLAB® R2015a 8.5 dengan pendekatan rate-based modeling. Model matematis dibuat berdasarkan sistem stripping yang dilengkapi kondenser dan reboiler. Penyelesaianan numerik menggunakan metode Ordinary Differential Equation (ODE) 45. Data yang didapat akan divalidasi dengan membandingkan data hasil simulasi dengan data eksperimen. Variabel penelitian berupa suhu larutan masuk stripper, konsentrasi dan jenis promotor. Pada suhu masuk pelarut 378,15 K dan tekanan 2 atm dengan konsentrasi promotor PZ sebesar 5% didapat nilai removal CO2 tertinggi sebesar 87,50%. Peningkatan nilai suhu larutan masuk meningkatkan konstanta laju reaksi dan konsentrasi promotor akan meningkatkan nilai enhancement factor sehingga nilai removal CO2 juga meningkat. Hasil validasi menunjukkan error untuk promotor PZ, Glisin dan DEA berturut-turut sebesar 8,05%, 13,96% dan 24,44%. ============================================================================================= Carbon doxide gas (CO 2 ) at very low temperature ( - 78 o C, 1 atm) will be freezing and clogging the piping systems. In ammonia synthesis process, CO 2 gas tend to become to xic for the catalyst as its cover the active site of the catalyst so that obstruct the catalyst performance. CO 2 gas separation process consists of absorption and stripping process. Stripping process is a solvent regeneration which is rich of CO 2 gas called rich solution. Solvent regenera tion beco mes vital so that the solvent could be reused for the absorption process. This experiment would be done by modeling and simulation of CO 2 gas stripping process from promot ed MDEA solution (20%volume) in packed column using MATLAB ® R201 5 a 8.5 software by rate - based modeling approximation. Mathematical modeling adopted from the stripping system that equipp ed with condenser and reboiler . Numerical solution solved by ordinary differential equation 45 method. The data obtained wi l l be validate d by comparing the result with experimental data . The research variable are solution inlet temperature , concentration and the type s of promotor . The highest CO 2 removal is 87,05% at solution inlet temperature 378.15 K and colum pressure 2 atm with 5% promotor PZ concentration. The increasing of solution inlet temperature will increase reaction rate constant and promotor concentration lead s to greater enhancement factor so that increasing the CO 2 removal .. The result of validation data for PZ, DEA and Glycine induce 8,05 % , 13,96% and 24,44% error value.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: stripping CO2, MDEA, promotor, pemodelan, simulasi.
Subjects: Q Science > QD Chemistry > QD117 Absorption
Divisions: Faculty of Industrial Technology > Chemical Engineering > (S1) Undergraduate Theses
Depositing User: Setyawan Gilang Adi
Date Deposited: 06 Feb 2018 03:58
Last Modified: 06 Feb 2018 03:58
URI: http://repository.its.ac.id/id/eprint/49956

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