Turboscrubber, Fluidized
bed scrubbers, absorbers and strippers
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Turboscrubber, Fluidized
bed scrubbers, absorbers and strippers |
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Case Studies
Cleveland Potash, Rotary Dryer Exhaust Gas Cleaning & Heat Recovery. VAW Stade, Aluminum Smelter Offgas Particulate Removal. William Blythye, Dual SO2/Particulate Duty. Wyeth Nutritionals, Boiler Flue Gas Cleaning &Heat Recovery. Rhone Poulenc Biochimie, NOx Removal
CASE STUDY: Cleveland Potash, Rotary Dryer Exhaust Commissioned in the summer of 1995 this TURBOSCRUBBER® unit simultaneously scrubs fine KCl salt crystals (outlet from cyclones) and soot particles (product of HSFO fired dryer), absorbs SO2 gas, and recovers over 4 MW of heat energy for reuse within the process. The scrubbing medium is, normally, process slurry, having an s.g. of at least 1.35 and containing 30% undissolved solids. The unique non-clogging feature of the TURBOSCRUBBER® ensures reliable and consistent operation without any increase in gas side pressure drop. Sea water is used during the rare periods when process slurry is unavailable. The system is integrated with the plant process control system to ensure optimum operation. A screen shot from the control system is shown below. .
System Details
CASE STUDY: VAW Stade, Aluminum Smelter Offgas Particulate Removal In operation since the late 1980's these six large Turboscrubber® units efficiently handle a combined total gas flow of 1.5 million Am3/hr from several banks of primary aluminum smelter pots. A considerably cheaper option than bag filters on this scale the scrubbers simultaneously remove a fine particulate mixture comprising Al2O3 and combustion products as well as HF gas.
System Details
CASE STUDY: William Blythe, Dual SO2/Particulate Duty Installed in early 1996 this Turboscrubber® unit simultaneously scrubs fine Sodium Metabisulfite dust and SO2 gas, from dryers, to high efficiencies. The plant can be operated under either batch or pH control using a caustic soda solution whilst taking care to avoid equilibrium problems possible due to the liberation of SO2 during the dissolution of Na2S2O5. The unit was supplied with standby fans and pumps to avoid unnecessary production shut downs .
System Details
CASE STUDY: Wyeth Nutritionals, Boiler Flue Gases Commissioned in the winter of 1997 this TURBOSCRUBBER® unit simultaneously scrubs fine soot particles (product of HSFO fuel boilers), absorbs SO2 gas, and recovers waste heat. The scrubbing medium is process effluent which typically has pH 8 to 12. This effluent was originally neutralized with acid (HCl) before discharging via a biological treatment plant. The operation of the TURBOSCRUBBER® is set such that the SO2 removal from the boiler flue gases is controlled to match that required to both naturalize the process effluent (without further chemical treatment) and maintain emission levels below legislative requirements. The unique non-clogging
feature of the TURBOSCRUBBER® ensures reliable and consistent
operation without any increase in gas side pressure drop.
System Details
FTL/Osprey custom design, build & commission NOx scrubbing systems to be operated with either alkaline reagent (NaOH) or powerful oxidant (H2O2). TurboScrubber's high mass transfer performance allows for fabrication of compact towers thereby helping to minimise space requirements & capital costs. Existing NOx scrubbers can easily be retrofitted at low cost to higher efficiency towers using the new Turbo-Pak fluidised bed packing range. The picture on the right shows a tower in Northern France retrofitted from fixed bed (Pall rings) operation & later upgraded further to ensure optimum efficiency in the same confined space
A.P.H./Wyeth,
Ireland
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