A comprehensive treatment method for oily sludge
An oil sludge and treatment method technology, applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. Incomplete and other problems, to achieve the effect of low operating costs and equipment investment, reducing equipment construction investment, and realizing resource utilization
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Embodiment 1
[0041] Take 10 liters of oily sludge with a water content of 96.2% and an oil content of 2.2%. After being treated by a plate and frame filter press, the water content of the oily sludge is reduced to 84.1%, and the oil content is 8.3%. Then the oily sludge is mixed with Fine sand (particle size about 120μm) is mixed at a mass ratio of 1:0.1, stirred evenly, and then sent to an extruder. The extruding temperature is 25°C and the pressure is 26MPa. After extruding for 10 minutes, the water content of the resulting mud cake is 23.2%, and the oil content 59.0%, and then directly mix the mud cake with the mixed solvent (main agent 94% (v / v), auxiliary agent 3% (v / v), auxiliary agent 3% (v / v)) in a mass ratio of 1:8 , the mud cake can be crushed into small particles after slight stirring in the extractant, extracted for 30 minutes, and the extraction temperature is 30°C. After the extraction is completed, the solid-liquid mixture is sent to the centrifugal separator, and the separat...
Embodiment 2
[0045] Take 1 liter of oily sludge with a water content of 98.1% and an oil content of 1.1%, and pass it through a horizontal screw centrifugal dehydrator. After treatment, the water content is 81.3% and the oil content is 13.5%. Then mix the oily sludge and fine sand (particle size about 160μm) at a mass ratio of 1:0.25, stir evenly, and then enter the extruder at a temperature of 12°C, a pressure of 20MPa, and a processing time of 15 minutes. The resulting mud cake has a moisture content of 26.0%. , with an oil content of 51.9%, which is mixed with a mixed solvent (main agent 90% (v / v), auxiliary agent 8% (v / v), auxiliary agent 2% (v / v)) in a mass ratio of 1:10 Extract for 10 minutes at a temperature of 45°C. After the extraction is completed, the solid-liquid mixture is sent to a centrifugal separator, and the separated liquid phase is directly refined. After the separation process, the solvent loss rate is 1.4%, and the separated solid phase enters the slurry Leaf type dry...
Embodiment 3
[0049] Take 10 liters of oily sludge with a water content of 96.2% and an oil content of 2.2%. After being treated by a plate and frame filter press, the water content of the oily sludge is reduced to 84.1%, and the oil content is 8.3%. Then the oily sludge is mixed with Fine sand (particle size about 100μm) is mixed according to the mass ratio of 1:0.2, stirred evenly and then sent to the extruder. The extruding temperature is 25°C and the pressure is 25MPa. After extruding for 20 minutes, the water content of the mud cake is 20.2%, oily 59.5%, and then directly mix the mud cake with the mixed solvent (main agent 97% (v / v), auxiliary agent 3% (v / v), auxiliary agent 0% (v / v)) in a mass ratio of 1:25 , the mud cake can be crushed into small particles after slight stirring in the extractant, extracted for 30 minutes, and the extraction temperature is 40°C. After the extraction is completed, the solid-liquid mixture is sent to the centrifugal separator, and the separated liquid ph...
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