A kind of sludge secondary vapor compression drying method
A technology of secondary steam and drying method, applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of low secondary steam cleanliness, poor sludge fluidity, high dust content, and achieve clean secondary steam and exhaust gas. , The effect of low sludge weight and secondary steam cleaning
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Embodiment 1
[0037] The dewatered sludge produced in the sewage treatment process and the heavy oil obtained from petroleum refining are evenly mixed into oil sludge according to the weight ratio of 5:1.
[0038] Start the vertical disc dryer, send the sludge into the drying chamber of the vertical disc dryer, and the moisture in the sludge in the drying chamber will naturally evaporate to produce secondary steam. After the secondary steam is led out of the drying chamber of the dryer, the saturated secondary steam is separated by a centrifugal separator, and the primary condensed water and primary tail gas are discharged. Saturated secondary steam is compressed into superheated steam by a centrifugal compressor, and sent to the heating chamber of the dryer as a heat source. After heat exchange, the superheated steam is condensed into secondary condensed water and secondary tail gas, and is discharged from the dryer; during the drying process of sludge in the drying chamber The secondary s...
Embodiment 2
[0042] The dewatered sludge produced in the sewage treatment process and the light oil obtained from petroleum refining are evenly mixed into oil sludge according to the weight ratio of 20:1.
[0043] Start the paddle dryer, send the oil sludge into the drying chamber of the paddle dryer, and the moisture in the oil sludge in the drying chamber will naturally evaporate to produce secondary steam. After the secondary steam is led out of the drying chamber of the paddle dryer, the saturated secondary steam is separated by a gravity separator, and the primary condensed water and primary tail gas are discharged. The saturated secondary steam is compressed into superheated steam by a high-pressure fan, and sent to the heating chamber of the paddle dryer as a heat source. After heat exchange, the superheated steam is condensed into secondary condensed water and secondary exhaust gas, and is discharged from the dryer; the sludge in the drying chamber is dried During the process, the ...
Embodiment 3
[0047] The dewatered sludge produced in the sewage treatment process and waste rubber and plastic pyrolysis oil are evenly mixed into sludge according to the weight ratio of 10:1.
[0048] Start the horizontal disc dryer, send the sludge into the drying chamber of the dryer, and the moisture in the sludge in the drying chamber will naturally evaporate to produce secondary steam. After the secondary steam is led out of the drying chamber of the horizontal disc dryer, the saturated secondary steam is separated by a centrifugal separator, and the primary condensed water and primary tail gas are discharged. The saturated secondary steam is compressed into superheated steam by a turbo compressor, and the superheated steam is sent to the heating chamber of the horizontal disc dryer as a heat source. After heat exchange, the superheated steam is condensed into secondary condensed water and secondary tail gas, and discharged out of the dryer ; During the drying process of the oil slud...
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