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Pilot-Scale Test of Counter-Current Ion Exchange (CCIX) Using UOP IONSIV IE-911.

DE2001786812

Publication Date	2001
Personal Author	Wester, D. W.; Leugemors, R. K.; Taylor, P. W.
Page Count	28
Abstract	A pilot-scale test of a moving-bed configuration of a UOP IONSIV. IE-911 ion-exchange column was performed over 17 days at Severn Trent Services facilities. The objectives of the test, in order of priority, were to determine if aluminosilicate precipitation caused clumping of IE-911 particles in the column, to observe the effect on aluminum-hydroxide precipitation of water added to a simulant-filled column, to evaluate the extent of particle attrition, and to measure the expansion of the mass-transfer zone under the influence of column pulsing. The IE-911 moved through the column with no apparent clumping during the test, although analytical results indicate that little if any aluminosilicate precipitated onto the particles. A precipitate of aluminum hydroxide was not produced when water was added to the simulant-filled column, indicating that this upset scenario is probably of little concern. Particle-size distributions remained relatively constant with time and position in the column, indicating that particle attrition was not significant. The expansion of the mass-transfer zone could not be accurately measured because of the slow loading kinetics of the IE-911 and the short duration of the test; however, the information obtained indicates that back-mixing of sorbent is not extensive.
Keywords	Aluminum silicates Ion exchange Extraction columns Precipitation Aluminum hydroxides
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Pacific Northwest National Lab., Richland, WA.; Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200302
Contract Number	AC06-76RLO1830

Pilot-Scale Test of Counter-Current Ion Exchange (CCIX) Using UOP IONSIV IE-911.

Pilot-Scale Test of Counter-Current Ion Exchange (CCIX) Using UOP IONSIV IE-911.
DE2001786812

Publication Date	2001
Personal Author	Wester, D. W.; Leugemors, R. K.; Taylor, P. W.
Page Count	28
Abstract	A pilot-scale test of a moving-bed configuration of a UOP IONSIV. IE-911 ion-exchange column was performed over 17 days at Severn Trent Services facilities. The objectives of the test, in order of priority, were to determine if aluminosilicate precipitation caused clumping of IE-911 particles in the column, to observe the effect on aluminum-hydroxide precipitation of water added to a simulant-filled column, to evaluate the extent of particle attrition, and to measure the expansion of the mass-transfer zone under the influence of column pulsing. The IE-911 moved through the column with no apparent clumping during the test, although analytical results indicate that little if any aluminosilicate precipitated onto the particles. A precipitate of aluminum hydroxide was not produced when water was added to the simulant-filled column, indicating that this upset scenario is probably of little concern. Particle-size distributions remained relatively constant with time and position in the column, indicating that particle attrition was not significant. The expansion of the mass-transfer zone could not be accurately measured because of the slow loading kinetics of the IE-911 and the short duration of the test; however, the information obtained indicates that back-mixing of sorbent is not extensive.
Keywords	Aluminum silicates Ion exchange Extraction columns Precipitation Aluminum hydroxides
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Pacific Northwest National Lab., Richland, WA.; Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200302
Contract Number	AC06-76RLO1830