JFE技報 No6 環境・エネルギー特集号

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1 JFE No p Recycling Technology of JFE Group for Recycle Oriented Society OGAKI Yoji YAMADA Yutaka NOMURA Makoto JFE JFE JFE 2000 Abstract: Corresponding to the recycle oriented society, JFE Group has developed technology for reusing wastes as suitable circulating resources for ironmaking. In compliance with the regulations of the recycling law since 2000, JFE Group started recycling business for reusing plastic packages, waste electric home appliances, waste polyethylene terephthalate (PET) bottles, and food waste. In this paper, the outline of these recycling business and technologies of JFE Group for constituting a recycle oriented society are presented. 1. CO2 JFE 2. JFE reduce reuse recycle JFE JFE

2 CO CO H2 H2 CO PVC HCl PVC PVC PVC Fig. 1 PVC PVC PVC PVC O2 PVC 300 C 400 C PVC HCl PVC HCl De-bail/Separation Film products PVC centrifugal separator BF gas De-bailer Bottle/Film ballistic separator Manual sorting PVC Pellet machine Extruder Residue treatment Except PVC Iron ore Fe O 2 Plastics C H 2 Iron Fe BF gas CO H 2 Bottles and containers Classification, Inspection Blast furnace Fig. 1 Schematic fl ow for converting domestic waste plastics to raw material for blast furnace 38

3 Waste PVC Absorption tower Crusher Hot air Inlet Outlet Rotary kiln Powder coke Extruder 35% HCl storage tank Storage tank Blast furnace Distiller tower Fig. 2 Schematic fl ow of PVC recycling using rotary kiln Fig. 2 PVC HCl 1999 PVC t/y JFE Fig C PFI Waste Gas cooling High temperature reactor Oxygen Degassing channel Gas purification NaOH Desulfurization Sulfur Purified synthetic gas Use for fuel gas in iron making plant Pit Press Oxygen Sedimentation tank Water treatment PSA Homogenize Hydroxide PSA: Pressure swing adsorption Fig. 3 Thermoselect process Metal, slag 39

4 / NF CO2 Re-re-use for raw Designated material of collector iron making Collection JFE Group Manufacture Reduction of construction wood debris Conservation of a tropical forest Customer Reduction of CO 2 emission (Concrete placing firm) Saving of fossil resouce Use Green Materials Construction site Business company Recycle Corp. Sale Re-use for material Fig. 4 Recycling system for making NF board Fig. 4 NF NF JFE Fig. 5 PET bottle Fitting bales for separating criteria Storage yard De-baler Removal of colored and other material bottle Colored bottles Other material bottles Clear bottle Primary shredder Label separator Labels Secondary shredder Reducing agent for blast furnace 10 30% Caps Washer Waste water treatment plant Dewaterer Cap separator Rinsing Dewatering dry PET flake PET flake products Recycled goods (1) Textile (2) Sheet Fig. 5 Schematic fl ow in the facility for recycling waste PET 40

5 NKK JFE JFE JFE JFE Fig. 6 3 Used home electoric appliance (TV, Refrigerator, Washing machine, Air conditioner) Recovery of insulating CFC Decomposition Plastics Crushing/Sorting process Iron Pre-sorting process (Manual dismantle, etc.) Crushing Compressor, Motor Wind Urethane form Cu, Al Dust Iron, Steel Future Raw material in steel making and nonferrous industry Many makers/many sizes Efficient recycling of worn-out appliances Heat exchanger Separation of print circuit board Cu, Al Print circuit board Importance of manual dismantling Recovery of CFC refregirant Treatment of CRT CFC Cullet Decomposition TV tube maker Fig. 6 Schematic fl ow of recycling used home electric appliances 41

6 Fig t/d m 3 -normal/d Hg JFE Fig. 8 Hg Hg Hg Straight tube Circular tube Compact tube Cap cutting Air blowing Fluorescent powder Mercury Cap Glass Mercury vapor recovery Cap sorting Washing with acid Fluorescent powder Mercury Iron Aluminum Plastics Glass Fig. 8 Schematic fl ow in the waste fl uorescent tube treatment facility Food waste Magnetic separator Heat exchanger Heat exchanger Pasteurization Heat tanks exchanger Pit Storage 70 C 1 h Secondary dehydrator Liquid Circulated liquid Bag opener Polymer Liquid Pulper Mixing tank Gas holder Screen Primary dehydrator To existing waste water treatment plant Slurry storage Sludge cake Bio gas Digester Mesosphilic digestic 37 C Desulfurization Water Gas flare Hot water Hot water storage Steam B Solid Dryer To existing gasification plant Fig. 7 Schematic fl ow of Bigadan Biogas Process Steam To steel works as fuel gas 42

7 5 000 t t 7. JFE 43

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