System and process for drying sludge using pulse combustion internal heating fluid bed
A fluidized bed drying and fluidized bed dryer technology, applied in dewatering/drying/concentrating sludge treatment, chemical instruments and methods, dispersed particle separation, etc., can solve the problem of long drying time, large energy consumption, and large heat loss and other problems, to achieve the effect of no dust combustion and explosion hazards, improved drying efficiency, and low environmental protection pressure
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[0036] The present invention will be further described below in conjunction with the drawings and embodiments.
[0037] figure 1 In, a pulsating combustion internally heated fluidized bed drying system for sludge, the exhaust pipe of the pulsating burner 3 is connected to the air inlet of the internally heated fluidized bed dryer 4, and the internally heated fluidized bed dryer 4 is connected to the wet sludge. The material granulation device and the cyclone dust collector 5 are connected separately; steam (superheated steam or saturated steam) enters the internal heat exchanger and the wet sludge after heat exchange through the steam inlet of the heat exchanger in the internal heating fluidized bed dryer 4 Return to the boiler; the air outlet of the internally heated fluidized bed dryer 4 is connected to the cyclone 5 and the electric precipitator 6 in sequence, and the exhaust gas after dust removal is mixed with the exhaust gas of the pulse burner 3 through the circulating fan...
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