Embed Size (px)
Citation preview
Gas Capture of Pierce Smith Converter Off-GasSAIMM Zambia25 November 2009Scharl Laubscher
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20102
Contents
Process FlowEmission comparisonDesign considerationConverter overviewDesign layoutProfiles used for design
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20103
Process flow Rönnskär Smelter
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20104
“Boliden” Converter Hoods
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20105
Client X Rönnskär
81 kg SO2 / t Cu 9 kg SO2 / t Cu
Converters emission comparison
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20106
0
50000
100000
150000
200000
250000
300000
350000
400000
1930 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2001
Tonnes
Emission of SO2
Production of Copper,Lead and Zinc Clinker
Boliden’s Rönnskär Smelter
Reduced Emissions and Increased Production
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20107
Design considerations for new converter hoods
Tight fitLow dilution • Increase in SO2 strength• Better acid plant control
High temperatureWater cooling• Keep water away from your hot metal
Easy to install and maintained
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20108
6/8/20108
Converter overview
PDF created with pdfFactory trial version www.pdffactory.com
08.06.20109
Slidingdoor
Primary hood
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201010
2 Sliding doors
Permanenthood
Secondary hood
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201011
How to prevent build-up
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201012
At Client X, the backside flap is not working
Typical emission concerns
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201013
Typical emission concernsBefore After
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201014
The back-side is not water-cooled, now very deformed
Typical result of water failure
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201015
Water requirements of competition
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201016
Water inlets, two on each sideWater outlets, one on each side
Compared to ours
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201017
COOLING WATER
COOLING WATER
PP
PP
PP
PP
PP
PP
xxxxHL
xxxxLS LE
CHEMICALS
MAKE-UP WATER
HOT WATER
xxxxTIC1
TT1
xxxxTIC2
TT2
xxxxTIC3
TT3
FTxxxxFIC FT
xxxxFIC FT
xxxxFIC
ATMROOF
ATMROOF
ATMROOF
ATM
EXP
xxxxTI TT
xxxxTI
TT
xxxxTI TTxxxx
TI TT
LELS
Typical layout
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201018
6/8/201018
Boiler
To baghouse
Converter aisle at Rönnskär Smelter, Sweden
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201019
Secondary hood
Primary hood
SiO2
Converter aisle at Rönnskär Smelter, Sweden
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201020
Blowing
Maintenance
Waiting
Converter aisle at Rönnskär in full production
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201021
Velocity profile
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201022
6/8/2010
COOLING CHANNEL COOLING CHANNEL
Hot side
Cooling water
Temperature profiling
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201023
Temperature, centre
Temperature profile
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201024
Summary of the best
Good primary hoods design eliminate secondary hood requirementsEliminate build up inside converter hoodReduction in dilution air brings control back to the acid plantsProper water flow modelling, eliminates hot spots, which increase durability (+/- 10 years)Maintenance minimalVery rigid design
PDF created with pdfFactory trial version www.pdffactory.com
08.06.201025
Thank you!Scharl Laubscher
[email protected]+27 82 822 6128
PDF created with pdfFactory trial version www.pdffactory.com
