Moo, Rayhan Khayrunnas Syarief (2022) Analisis Thermal Design Acid Gas Removal Condenser Pada Sistem Bio Refinery Unit Kilang Plaju Dengan Menggunakan Software HTRI Xchanger. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Acid Gas Removal Condenser merupakan alat penukar panas yang berfungsi untuk mengkondensasi gas asam dari regenerator column pada acid gas removal unit.Uap acid gas yang memasuki AGR Condenser pada sisi tube memiliki temperatur 96,36 oC dan keluar dengan temperatur 50 oC. Fluida pendingin yang digunakan berupa air pada sisi shell dengan temperatur masuk 32 oC dan keluar dengan temperatur 42 oC. Pada proses desain heat exchanger dilakukan variasi pada mass flow rate dengan tujuan untuk mengetahui pengaruh dari perubahan terhadap dimensi dan performa heat exchanger yang dapat memenuhi kebutuhan proses dari acid gas removal unit. Proses thermal design pada penelitian kali ini menggunakan software HTRI Xchanger Suite untuk mendapatkan dimensi yang paling optimal dari AGR Condenser. Dilakukan tiga kali simulai dengan tiga mode yang berbeda. Mode design untuk mendapatkan bebrapa opsi dimensi awal yang dibutuhkan dari AGR Condenser, mode rating untuk mendapatkan performa teoritikal dan mendapatkan persentase overdesign dari AGR Condenser, dan mode simulationuntuk mendapatkan performa aktual dari AGR Condenser. Dilakukan juga perbandingan hasil simulasi dengan perhitungan termodinamika dan perpindahan panas untuk mendapatkan pengertian lebih mendalam tentang mendesain sebuah heat exchanger. Dari hasil perhitungan dan simulasi didapatkan dimensi AGR Condenser yang sesuai dengan kebutuhan proses dengan jumlah tube 838, ODtube 19,05 mm, Ds 0,8 m, Ltube 2,438 m, sisi tube(IDInletNozzle 541,45 mm, ODOutletNozzle 541,45 mm), sisi shell(ODInletNozzle381 mm, IDOutletNozzle381 mm,), Tube Layout 30o, jumlah baffle 5. Dilakukan juga analisa performa dari AGR Condenser menggunakan software HTRI Xchanger dengan variasi mass flow rate shelldari 5,06 Kg/s sampai 70,85 Kg/s dan variasi mass flow rate sisi tube dari 0,29 Kg/s sampai 4,07 Kg/s, dan didapatkan kenaikan mass flow rate pada sisi shell, dengan mass flow rate pada sisi tube tetap, akan meyebabkan naiknya laju perpindahan panas sebesar 94,67% dan koefisien perpindahan panas luar sebesar 283,13%, dan akan menyebabkan turunnya Overall Heat Transfer sebesar 9,18% dan temperatur keluar pada sisi shell sebesar 54.46% dan tube sebesar 45,95%. Dan didapatkan pula kenaikan mass flow rate pada sisi tube, dengan mass flow ratepada sisi shell tetap, akan menyebabkan naiknya laju perpindahan panas sebesar 1081,71%, Overall Heat Transfer sebesar 656,42%, koefisien perpindahan panas dalam dan luar (hi dan ho) sebesar 1614,45% dan 9,99%, dan temperatur keluar dari sisi shell sebesar 38,10% dan tubesebesar 65,78%
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The acid Gas Removal Condenser is a heat exchanger that functions to condense acid gas from the regenerator column in the acid gas removal unit. The acid gas vapor that enters the AGR Condenser on the tube side has a temperature of 96.36 oC and exits at a temperature of 50 oC. The cooling fluid used is water on the shell side with an inlet temperature of 32 oC and an exit temperature of 42 oC. In the heat exchanger design process, variations in the mass flow rate are carried out in order to determine the effect of changes on the dimensions and performance of the heat exchanger that can meet the process needs of the acid gas removal unit. The thermal design process in this study uses the HTRI Xchanger Suite software to obtain the most optimal dimensions of the AGR Condenser. Performed three times the simulation with three different modes. Design mode to get some initial dimension options needed from AGR Condenser, rating mode to get theoretical performance and get overdesign percentage from AGR Condenser, and simulation mode to get actual performance from AGR Condenser. A comparison of the simulation results with thermodynamic and heat transfer calculations is also carried out to get a deeper understanding of designing a heat exchanger. From the calculation and simulation results, the dimensions of the AGR Condenser are obtained according to the process requirements with the number of tubes 838, ODtube 19.05 mm, Ds 0.8 m, Ltube 2.438 m, tube side (IDInletNozzle 541.45 mm, ODOutletNozzle 541.45 mm), shell side (ODInletNozzle 381 mm, IDOutletNozzle 381 mm,), Tube Layout 30o, number of baffles 5. Performance analysis of AGR Condenser was also carried out using HTRI Xchanger software with variations in shell mass flow rate from 5.06 Kg/s to 70.85 Kg/s and the variation of mass flow rate on the tube side from 0.29 Kg/s to 4.07 Kg/s, and an increase in the mass flow rate on the shell side, with a constant mass flow rate on the tube side, will cause an increase in the heat transfer rate. of 94.67% and the external heat transfer coefficient of 283.13%, and will cause a decrease in the Overall Heat Transfer of 9.18% and the exit temperature on the shell side by 54.46% and the tube by 45.95%. And it is also found that an increase in the mass flow rate on the tube side, with a fixed mass flow rate on the shell side, will cause an increase in the heat transfer rate of 1081.71%, Overall Heat Transfer of 656.42%, internal and external heat transfer coefficients (hi and ho) of 1614,45% and 9.99%, and the exit temperature from the shell side is 38.10% and the tube is 65.78%.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSM 621.197 Moo a-1 2022 |
| Uncontrolled Keywords: | Acid Gas Removal, Condenser, mass flow rate, HTRI Xchanger Suite, Overall Heat Transfer, heat transfer coefficients |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Anis Wulandari |
| Date Deposited: | 07 Nov 2022 08:35 |
| Last Modified: | 07 Nov 2022 08:35 |
| URI: | http://repository.its.ac.id/id/eprint/95060 |
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