Dependence of Na+ leakage on intrinsic properties of cation exchange resin in simulated secondary environment for nuclear power plants
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Material corrosion in nuclear power plant (NPP) is not controlled only by amine injection but also by ion exchange (IX) which is the best option to remove trace Naþ. This study was conducted to understand the Naþ leakage characteristics of IX beds packed with ethanolamine-form (ETAH-form) and hydrogen-form (H-form) resins in the simulated water-steam cycle in terms of intrinsic behaviors of four kinds of cationexchange resins through ASTM test and Vanselow mass action modeling. Naþ was inappreciably escaped throughout the channel created in resin layer. Naþ leakage from IX bed was non-linearly raised because of its decreasing selectivity with increasing Naþ capture and with increasing the fraction of ETAH-form resin. Naþ did not reach the breakthrough earlier than ETAHþ and NH4 þ due to the increased selectivity of Na þ to the cation-exchange resin (Hþ < ETAHþ < NH4 þ ≪ Naþ) at the feed composition. Naþ leakage from the resin bed filled with small particles was decreased due to the enhanced dynamic IX processes, regardless of its low selectivity. Thus, the particle size is a predominant factor among intrinsic properties of IX resin to reduce Naþ leakage from the condensate polishing plant (CPP) in NPPs
Abstract
Material corrosion in nuclear power plant (NPP) is not controlled only by amine injection but also by ion exchange (IX) which is the best option to remove trace Naþ. This study was conducted to understand the Naþ leakage characteristics of IX beds packed with ethanolamine-form (ETAH-form) and hydrogen-form (H-form) resins in the simulated water-steam cycle in terms of intrinsic behaviors of four kinds of cationexchange resins through ASTM test and Vanselow mass action modeling. Naþ was inappreciably escaped throughout the channel created in resin layer. Naþ leakage from IX bed was non-linearly raised because of its decreasing selectivity with increasing Naþ capture and with increasing the fraction of ETAH-form resin. Naþ did not reach the breakthrough earlier than ETAHþ and NH4 þ due to the increased selectivity of Na þ to the cation-exchange resin (Hþ < ETAHþ < NH4 þ ≪ Naþ) at the feed composition. Naþ leakage from the resin bed filled with small particles was decreased due to the enhanced dynamic IX processes, regardless of its low selectivity. Thus, the particle size is a predominant factor among intrinsic properties of IX resin to reduce Naþ leakage from the condensate polishing plant (CPP) in NPPs
참고문헌 (21)
- Pressurized water reactor secondary water chemistry guideline, Revision 6, "K. Fruzzetti", EPRI, 2-1~2-3 (2006)
- T. Fukumura, "Influence of ETA injection on flow accelerated corrosion of PWR secondary system", NACE Corrosion 2009 International Conference & Expo (2009), NACE
- C. Marks, "Amine effect on corrosion product transports and steam generator fouling", Steam Generator Management Program 2010 Steam Generator Secondary Side Management Conference (2010), EPRI
- I.H. Rhee, "Selection parameters for secondary pH control agent in PWR", Steam Generator Management Program 2010 Steam Generator Secondary Side Management Conference (2010), EPRI
- I.H. Rhee, "Water quality of NPP secondary side with combined water chemistry of ammonia and ethanolamine", International Conference NPC (2012)
- 이인형, "Evaluation of pH Control Agents Influencing on Corrosion of Carbon Steel in Secondary Water Chemistry Condition of Pressurized Water Reactor", Nuclear Engineering and Technology, 46(3), pp.431~438 (2014), 한국원자력학회
- Y. B. Lee, "Effects of advanced amines on magnetite deposition of steam generator tubes in secondary system", Coatings, 514, pp.1~19 (2021)
- 안현경, "A study on breakthrough characteristics of ion exchange bed with H- and ETAH-form resins for cation exchange in NH3 and ETA solution including trace NaCl", 상하수도학회지, 35(6), pp.533~544 (2021), 대한상하수도학회
- W. Bashir, "Retention of alkali, alkaline earth and transition metals on an itaconic acid cation-exchange column: eluent pH, ionic strength and temperature effects upon selectivity", J. Chromatogr A, 964, pp.113~122 (2002)
- M. B. Richard, "Ion exchange selectivity and electrolyte concentration", J. Chem. Soc., Faraday Trans., 1(70), pp.2080~2091 (1974)
- ASTM, "Standard Test Methods and Practices for Evaluating Physical and Chemical Properties of Particulate Ion-Exchange Resins1", ASTM D2187-17, ~ (2017)
- I. H. Rhee, "Binary and ternary cation exchange on strong acid cation exchange resin involving Na, Mg, and Zn in single and binary backgrounds of chloride, perchlorate, and sulfate", Langmuir, 15, pp.6875~6883 (1999)
- F.P. Reinhard, "Utilization and practical application of ion exchange, A critical review", 14th Annual AESF, 1993, ~[DOI]
- I. Curran Woodard, "Industrial Waste Treatment Handbook" (2005), Butterworth-Heinemann
- B. S. Salem, "Fixed-bed ion exchange columns operating under non-equilibrium conditions : estimation of mass transfer properties via non-equilibrium modeling", React. Funct. Polym, 67(12), pp.1540~1547 (2007)
- E. L. Alfredo, "Diffusion in Ion-Exchange Resins", Ph. D, pp.1960
- K. P. Sudhir, "Mixed Bed Ion-Exchange Modeling for Divalent Ions in a Ternary System", Ph. D, pp.1992
- A. N. Valentina, "Handbook of Natural Zeolites", pp.452~472 (2012), Bentham Science Pub
- V.H. Fabíola, "Ion-exchange breakthrough curves for single and multi-metal systems using marine macroalgae Pelvetia canaliculata as a natural cation exchanger", Chem. Eng. J, 269, pp.359~370 (2015)
- J. Yi, "True multi-component mixed-bed ion-exchange modeling", React. Funct. Polym, 60, pp.121~135 (2004)
- S. Fisher, "Ion Exchange Technology in the Nuclear Fuel Cycle", pp.9~52 (1986), International Atomic Energy Agency