Drying pretreatment method and device for urban domestic garbage
A technology of municipal solid waste and solid waste, which is applied in the field of dry pretreatment of solid waste, can solve the problems of domestic solid waste that plague economic development and environmental governance, insufficient harmless treatment rate, unsuitable fluidized bed, etc., and achieve reduction of equipment Effects of investment, scale reduction, and total waste reduction
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[0022] Such as figure 1 As shown in the drying pretreatment method of municipal solid waste, before the garbage is sent to the hopper of the dryer, the large-sized garbage is first selected and sent to the garbage crusher for crushing, and then mixed and homogenized, and then the mixed and homogenized garbage Put it into the receiving hopper 1 of the garbage dryer, and push the garbage into the garbage dryer 3 through the garbage feeder 2 for drying; the high-temperature flue gas of 140-150 ℃ drawn from the smoke exhauster of the incinerator passes through the lower part of the dryer. The hot air conveying pipe 10 enters the dryer 3 as a garbage drying medium; the domestic garbage is dried on the conveyor belt of the dryer 3, and 10-15% of the moisture in the garbage becomes water vapor together with the dry waste gas from the top of the dryer. The exhaust gas discharge pipe 11 enters the exhaust air induced draft fan 6 after drying; the garbage is discharged due to 10% to 15%...
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