Method and device for extracting oil from kitchen garbage
A technology of kitchen waste and extraction method, which is applied in the field of oil recovery of oily wastes, and achieves the effects of high work efficiency, reduced use of raw material steam, and high degree of automation
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Embodiment 1
[0038] Example 1. Kitchen waste with a water content of 88.1% and a total oil content of 123.4mL / kg is transported to the preheating tank through a paste pump, mixed with flash steam and preheated to 60°C, 0MPaG, and the residence time is 30min; The water heating feed pump pumps the preheated material into the water heating tank, and heats it to 140°C with raw material steam, 0.4MPaG, and the reaction time is 10 minutes; after the reaction, the kitchen waste enters the flash tank to lower the temperature and pressure, and the temperature of the flash tank The temperature is 80°C, the pressure is 0 MPaG, and the residence time is 10 minutes; the kitchen waste slurry after flashing flows to the oil-water separator by itself for oil-water separation; the obtained oil is stored in the oil storage tank.
[0039] As a result of the reaction, the floatable oil content of the kitchen waste slurry was 38.1 mL / kg, and the oil recovery rate was 30.9%.
Embodiment 2
[0040] Embodiment 2, keeping the reaction time of the hydrothermal tank continued for 30min, and other reaction conditions were the same as in Embodiment 1. As a result of the reaction, the floatable oil content of the kitchen waste slurry was 44.3mL / kg, and the oil recovery rate was 35.9%.
Embodiment 3
[0041] Embodiment 3, keep the hydrothermal tank reaction time to continue 50min, other reaction conditions are the same as embodiment 1. As a result of the reaction, the floatable oil content of the kitchen waste slurry was 45.9 mL / kg, and the oil recovery rate was 37.2%.
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