Pemodelan dan Simulasi Proses Adsorpsi Gas Pengotor oleh Molecular Sieve pada Pendingin Rde dengan Software Chemcad
Indonesian
Kata Kunci:
pressure swing adsorption, Molecular Sieve, gas impurities, RDE10Abstrak
The purity of RDE10 helium coolant should be maintained from various impurities gas due to water/air ingress that reacts with the reflector graphite (C). These impurities are CH4, CO, CO2, H2O, H2, O2, and N2 which can initiate oxidation corrosion or carburization-decarburization so the concentration should be maintain to be a minimum. The helium coolant is purified by Helium Purification System (HPS). One of the stages in HPS is adsorption by Molecular Sieve mainly for CO2 and H2O molecules. This paper discusses the influence of pressure, known as pressure swing adsorption (PSA) on the adsorption ability of the Molecular Sieve aims to determine the most effective pressure that will be operated on Molecular Sieve column. Molecular Sieve is modeled with CHEMCAD computer code in two columns, one column for the adsorption process, and the other for the regeneration (desorption). Adsorption methods used in the analysis is the Langmuir method. Models that have been developed simulated by providing input: total flow rate of 10.5 kg/hour, 30 °C, porosity 0.7, bed height 2 m, pore diameter 5 A, and the amount of O2 and N2 impurities respective each 1 g/s. The pressure varies between 5 to 50 bars, and the Molecular Sieve adsorption capability is analyzed. Simulation results show that with the increase in pressure of 5 to 50 bar, indicating an increase in Molecular Sieve absorption capacity to CO2 is 15.90% and to H2O is 15.80%. In the SPH design, the input stream to the Molecular Sieve must be compressed until 50 bar to obtain high absorption capability of the CO2 and H2O.
Unduhan
Referensi
NATESAN K., A., PUROHIT, S.W. TAN, "Material Behavior in HTGR Environments”, Argonne National Laboratory, NUREG/CR-6824 ANL-0237, 2013
Priambodo D., Pancoko, Sriyono M., Setiadipura T. Design of Helium Purification System for Indonesia Experimental Power Reactor- Reaktor Daya Eksperimental. Int. J. Mech. Eng. Technol. 2018. 6(7):1–7.
Sriyono, Kusmastuti R., Bakhri S., Sunaryo G.R. Analysis of helium purification system capability during water ingress accident in RDE. J. Phys. Conf. Ser. 2018. 962(1):1–9
Dibyo S., Sunaryo G.R., Bakhri S., Irianto I.D. Analysis on Operating Parameter Design to Steam Methane Reforming in Heat Application RDE. J. Phys. Conf. Ser. 2018. 962:012052.
PERRY H., et.al., "Perry's Chemical Engineers' Handbook” 8th Edition, Mc. Graw Hill, 2008
BENNET J.E., et.al, "Pressure Swing Adsorption (PSA) Regenerative Chemical Filtration and Environmental Control System For The Colpro of Armoured Fighting Vehicles”, Journal Air Control Technologies, Hawthorne Road, Staines, Middlesex, TWI8-3AY, ENGLAND, 2013
DANGI P. GANGA et.al., ”Adsorption Selectivity of CO2 Over N2 by Cation Exchange Zeolite L : Experimental and Simulation Studies”, Journal of Material, CSIR, Bhavnagar, India, 2012
MYERS A.L., "Adsorption in Porous Materials at High Pressure : Theory and Experiment”, Journal of Chem. Engineers, Dept. of Chemical and Biomolecular Engineering, University of Pensnsylvania, Amerika Serikat, 2017
ENDANG WIDJAJANTI LAKSONO, ”Analisis Daya Adsorpsi Suatu Adsorben”, Jurnal Kimia, Jurusan Kimia, FMIPA, Universitas Negeri Yogyakarta, 2012
GASTALDI,O., et al., "Helium Purification”, Proceedings HTR 2006, 3rd International Topical Meeting on High Temperature Reactor Technology, Johannesburg, South Africa, 2006.
PT. INGENIOUS,”CHEMCAD Process Simulation”, Manual Book of Software Training, BATAN, Serpong, 2012
CROFT T DAVID, et.al.,”Adsorbents for Pressure Swing Adsorption Regeneration”, Journal of Energy, US Army Soldier and Biological Command, USA, 2016
Sriyono, Topan Setiadupura, Geni R. Sunaryo, "Carbon Dust in Primary Coolant of RDE: Its Problem and Solution”, Jurnal Tri Dasa Mega, Vol. 20, No.2, Juni 2018, pp. 89-98