FIELD: heating.
SUBSTANCE: heat treatment method of mechanically dewatered sludge involves drying of dewatered sludge of steam-gas mixture obtained from dewatered sludge and heated due to combustion heat of dried deposits, combustion of dried deposits so that melt of mineral substances is obtained and tapped and discharged steam-gas mixture is baked with flue gases. Prior to baking, steam-gas mixture is divided into two flows; with that, the first flow in the amount of 5-10% of the whole discharge weight is supplied to combustion zone of thermally dried deposits, and the second flow of the rest weight is introduced to deactivation gaseous products after melt of mineral substances is tapped.
EFFECT: invention allows improving ecological efficiency of combustion process of dried deposits.
1 dwg
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