gas scrubber 废气处理器

Gas cleaning scrubbersKeeping gases cleanAs an industry pioneer, we have developed scrubberswith extremely high collection effi ciency andoutstanding particle removal capability. The easy-to-operate units fulfi ll your requirements and result inincreased production capacity and minimized costs.Outotec possesses an extensive range of alternativetechnologies that are aoptimized for different rawmaterials, process routes and energy sources. Ourprocess solutions ensure that customers receive thevery best.002 More out of ore!Cascade scrubberLower your emissionsSuperior technology & enhanced capacityThe cascade-type wet scrubber is a wet-type separator for collecting solids in gases. It delivers powerful dust cleaning with cutting-edge technology that ensures optimal performance.Today’s modern processes call for effi cient solutions with all the advantages available. Dust collection has a major impact on the functionality of many aspects of a process. High productivity, low energy consumption, and outstanding separation effi ciency are all combined in our cascade scrubber that is customized to match your specifi c needs.This cascade-type scrubber, withminimized operational costs, lower water consumption, and minimized emissions, is a powerful package that represents an extremely cost-effi cient investment.The Outotec cascade scrubberCharacteristics of the cascade scrubber Highly effi cient removal of particles • 5µm and larger Low maintenance requirements • Emissions •< 30 mg/Nm ³More out of ore! 003Unique customizationThe capacity of the cascade scrubber is customized according to your needs, thereby achieving optimized operability and process outputs. Customization directly results in overall process quality improvements and units that are easy to operate.Dust collection is carried out in aneffi cient manner by separating the gas-borne particles from the gas stream by deposition on a collecting surface, from where they are removed for recovery or disposal. Application areas of the cascade scrubbers are typically pelletizing plants and hydrometallurgical processes.Typical performance estimates Capacity1500 - 150 000 Nm³/hTemperature 25 - 300 °C Gas inlet pressure (-) 3 - 5 kPa Water to the scrubbers 3 bar Scrubber water consumption 5 - 40 m³/h Water temperature (inlet)25 °CBenefits of customizationHigh collection effi ciency•Low water consumption • High equipment availability • Low emissions •Venturi scrubberThe multipurpose scrubberState-of-the-art gas cleaningEquipped with a water seal, the venturi scrubber is specially designed for handling explosive gases in the safest possible manner. The effi cient and secure operating principle is to both cool and clean the gas and to quench sparks from the furnaceThe venturi scrubber is very simple to operate as it has no moving mechanical parts. An open internal design contributes to various advantages and an unparalleled performance.The Outotec venturi scrubber was designed by professionals with great industry know-how and vast experience. The venturi scrubber is a high-pressure type scrubber that aspirates furnace gas from the furnace by effectively pressurizing the scrubber system gas line.In addition to increasing equipmentavailability and minimizing air pollution, our latest technology takes your process effi ciencies to a new level004 More out of ore!Typical performance estimates Capacity 3500 - 40 000 Nm ³/h Temperature 60 - 900 °C Water to thescrubbers 30 bar Scrubber water consumption 100 - 250 m³/h Watertemperature (inlet)20 °CThe Outotec venturi scrubberMultiple functions in one unique unitHot gas quenching• Steam and vapor condenser • Removal of particulates• Capture of harmful gases (SOx, HCl, etc.)•The Outotec venturi scrubberMore out of ore! 005Performance and additional featuresThe venturi scrubber/ceramic fi lter (see next page) combination ensures very high capture effi ciency for the EAF gas, with collection effi ciencies close to 100%.Outotec high-pressure venturi scrubbershave also been successfully utilized for closed arc furnace gases in ferrochrome works. The scrubber-systems are designed to operate with two scrubbers in order to guarantee the best possible gas cleaning with improved furnace operation and availability, andto keep equipment size reasonable.Benefits of the venturi scrubberMinimized air pollution • Low maintenance costs • Reliable operation • Effective slurry removal•Additional benefits of the venturi scrubber:Not sensitive to gas fl ow variations■Wetted walls eliminate wet-dry line build-up ■Converger part and droplet separator ■Special water lock tank■006 More out of ore!CO-gas plate filter- efficient process gas cleaningVery clean scrubber outlet gasThe very fi nest particles are diffi cult to collect by any wet scrubbing method. The latestapproach to the subject is a cassette-type ceramic fi lter that facilitates the removal of particles that pass through the scrubbers. Ceramic fi lters are becoming an elementary part of furnace gas cleaning.CO-gas can be used as secondary energy, which on one hand saves primary electric energy in ferrochromium production and, on the other, replaces other fossil fuels at the adjacent works.Utilization of the gas has a high impact on total dust and gaseous emissions and on the energyoptimization at the ferrochromium and steel works.Taking advantage of the CO-gas, which isproduced and released during the FeCr-process is also vital from an environmental perspective.SlurryWater lock tankFlushing waterNitrogenClean gasSolids 1 mg/Nm³Inlet gasSolids 50 mg/Nm³Advantages of clean CO-gas:Possibility to use CO-gas for more■demanding purposesThe operation of CO-gas valves remains■goodLonger equipment lifetime due to low lining■deteriorationTypical features of sintered lamella elements High collection effi ciency • Reliable fi lter cleaning • Long surface life• Small space requirements • Surface coating can be removed •and fi lter media regenerated by fresh coating Changes in the clean gas values •during the cleaning pulse are negligibleMore out of ore! 007 Owner Capacity Products Scrubbers Start-upSamancor Ltd. Tubatse South Africa upgrade to 620 000 tpapelletsSinteres pellets 4 cascade scrubbers e2010ASA Metals (Pty) Ltd. South Africa 2 x 66 MVA SAF furnace Charge gradeferrochrome2 cascade scrubbers2009 600 000 tpa pellets Sintered pellets7 cascade scrubbersSamancor Ltd. MiddleburgSouth Africa600 000 tpa pellets Sintered pellets 4 cascade scrubbers2009OAO TNK KazchromeKazakhstan700 000 tpa pellets Sintered pellets 4 cascade scrubbers2009XstrataSouth Africa2 x 600 000 tpa pellets Sintered pellets13 cascade scrubbers2007InternationalFerro Metals (SA)(Pty) Ltd.400 000 tpa pellets Sintered pellets 3 cascade scrubbers2007Hernic Ferrochrome Ltd.South Africa360 000 tpa pellets Sintered pellets7 cascade scrubbers2 venturi scrubbers1 cascade scrubber 200578 MVA SAF furnace Charge gradeferrochromePenoles Mexico 65 000 tpa Copper cathodes 2 cascade scrubbersand acid mist capturesystem2005OAO TNK KazchromeKazakhstan700 000 tpa pellets Sintered pellets 4 cascade scrubbers2005Samancor Ltd. Ferrometals South Africa Upgrade to 620 000tpa pelletsSintered pellets 4 cascade scrubbers2003SA Chrome and Alloys Ltd.South Africa520 000 tpa pellets Sintered pellets 4 cascade scrubbers6 venturi scrubbers 20022x54 MVA SAF furnaces Charge gradeferrochromeSamancor Ltd.Tubatse FerroSouth Africa520 000 tpa pellets Sintered pellets7 cascade scrubbers2002Outokumpu Oyj Finland 40 / 75 MVA SAF furnace Charge gradeferrochrome2 cassette fi lters2002Assmang ChromeSouth Africa350 000 tpa pellets Sintered pellets 3 cascade scrubbers3 venturi scrubbers 200154 MVA SAF furnace Charge gradeferrochromeOMG Kokkola Chemicals Finland 20 000 tpa Copper cathodes 1 cascade scrubberand acid mist capturesystem2000CBMMBrazil80,000 tpa sinter Ferroniobium sinter 2 cascade scrubbers2000Hernic Ferrochrome Ltd. South Africa 350 000 tpa pellets Sintered pellets3 venturi scrubbers199954 MVA SAF furnace Charge gradeferrochromeSamancor Ltd. Ferrometals South Africa 520 000 tpa pellets Sintered pellets6 venturi scrubbers19982x48 MVA SAF furnaces Charge gradeferrochromeOutokumpu OyjFinland350 000 tpa pellets Sintered pellets 3 cascade scrubbers1989Outokumpu Oyj Finland 40 MVA SAF furnace Charge gradeferrochrome3 venturi scrubbers1987Outokumpu Oyj Finland 75 MVA SAF furnace Charge gradeferrochrome3 venturi scrubber1985Gas cleaning equipment and systemsCopyright © 2009 Outotec Oyj. All rights reserved.Outotec and More out of ore! are registered trademarks of Outotec Oyj.3 0 6 3 E N . E s p o o , F i n l a n d . J a n u a r y 2 0 0 9Outotec is a worldwide technology leader in minerals and metals processing, providing innovative and environmentally sound solutions for a wide variety of customers in minerals processing, iron and steel, aluminum and non-ferrous metals industries. Outotec Oyj is listed on the Nasdaq OMX Helsinki.ferroalloys@。