F G D
Wet flue gas cleaning
Limestone flue gas desulphurization (FGD) units are well-proven and cost-effective. We arrange to provides novel scrubber system (FGDplus) that maximizes SO2 and dust removal while keeping energy inputs to a minimum.
Advanced scrubber design
The nucleus of our design is the unique scrubber, which is an open spraying tower that has been enhanced in recent years using computerized simulation techniques. Former AE&E has been conducting intensive development work in this field since 1995 and today enjoys a leading position which not only allows us to simulate flow and temperature profiles, but also to calculate the distribution of SO2 concentrations in the scrubber.
During comparisons of simulator data with actual plant measurements, the flow and temperature profiles have verified our design parameters. The result is a scrubber that is characterized by minimum dimensions, adaptable scrubber entry and exit geometry, and the optimum layout of the spray nozzles and spray banks. This results in a uniform SO2 profile in combination with the highest possible superficial velocity in the scrubber - removing the most pollutants and utilizing the least power.
The scrubber also benefits from the use of the latest materials and construction methods. GRP absorbers and reinforced concrete absorbers with polypropylene linings are used in addition to the proven steel absorbers with a variety of inner linings or stainless steel.
Key features of limestone flue gas desulphurization systems
Outstanding for all fuels (lignite, hard coal, oil, biomass, waste)
SO2 removal >99%
Maximum HCl and HF removal levels
Gypsum as a saleable end product
Flue gas volume flows of up to 5,000,000 m3/h [stp, wet] per scrubber
Limestone as a favorably priced absorption agent
Low operating costs and power consumption
Open spray tower, low pressure loss
Options for materials of construction (high alloy, carbon steel with rubber lining, concrete with PP-lining, glass fiber reinforced plastics)
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