Transcript GAS ABSORPTION COLUMN - UTC Engineering Lab Web …

GAS ABSORPTION
COLUMN
TEAM MEMBERS:
SKIP POND
KENNETH SIMPSON
OUTLINE
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BACKGROUND
OPERATION
PRESSURE DROP
FLOODING POINT
DATA GRAPH
CONCLUSIONS
QUESTIONS
BACKGROUND
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MEDIA --- 3/8” RASCHIG RINGS
PACKED MEDIA HEIGHT = 5 FT.
INNER DIAMETER OF COLUMN= 3 IN.
DENSITY OF H20 = .994g/cc
TEMPERATURE OF AIR = 24.50C
AIR ASSUMED TO BE DRY
BACKGROUND
BACKGROUND
BACKGROUND
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MEDIA --- 3/8” RASCHIG RINGS
PACKED MEDIA HEIGHT = 5 FT.
INNER DIAMETER OF COLUMN= 3 IN.
DENSITY OF H20 = .994g/cc
TEMPERATURE OF AIR = 24.50C
AIR ASSUMED TO BE DRY
OPERATION
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LIQUID DISTRIBUTION/FILM
“RICH” ENTERING GAS
MASS TRANSFER
COLLECTION OF LIQUID
GAS OUTLET
OPERATION PROBLEMS
• FLOODING
• PRESSURE DROP
• CHANNELING
– INADEQUATE LIQUID FILM COVER
PRESSURE DROP (P)
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FLUID FRICTION
MEDIA TYPE AND SHAPE
TOWER DIMESIONS
LIQUID/GAS FLOW RATES
DENSITY & VISCOSITY OF LIQUID
FLOODING POINT
• GAS FLOW FORCED THROUGH LIQUID
• CORRELATION WITH P
– PACKING FACTORS 10-60
– Pflood = .115Fp.7
• PACKING FACTOR > 60
– ASSUMED = Pflood = 2 IN. H20/FT.
GAS COLUMN DATA
ABSORPTION COLUMN TESTING
30
25
PRESSURE DROP
20
15
AIR VALVE
10
WATER FLOW
PUMP
5
AIR FLOW
0
24.5
24.7
24.9
25.1
25.3
TIME(MINUTES)
25.5
25.7
25.9
CONCLUSIONS
• Pflood = 2 in. H20/ft. of packing
– ENGR.435 COLUMN = 10 in. H20
• P(geyser) = 26 in. H20
– COLUMN BECOMES INOPERABLE
• OPTIMUM OPERATING POINT
– 1/2 GAS FLOW RATE OF FLOODING
–1.5 LBS./MIN
QUESTIONS ???