Process and system for recycling kitchen waste grease

Abstract

The invention provides a process and a system for recycling kitchen waste grease. The system comprises a waste grease collecting tank, a grease preheating tank, a grease conveying pump, a filter, a grease heating tank, a centrifugal machine and a vapor source, wherein a heating coiler and the grease conveying pump are arranged in the waste grease collecting tank; the heating coiler is connected to the vapor source by virtue of a pipeline; the grease conveying pump is connected to the grease preheating tank by virtue of a pipeline; a bottom outlet of the grease preheating tank is connected to the filter by virtue of a pipeline and the grease conveying pump; the filter is connected to the grease heating tank by virtue of a pipeline; the bottom outlet of the grease heating tank is connected to the centrifugal machine by virtue of a pipeline and the grease conveying pump; and the centrifugal machine is connected to an industrial grease storage tank by virtue of a pipeline. According to the process and the system disclosed by the invention, the kitchen waste grease is heated and molten, and then heated and stirred, then, insoluble impurities of the kitchen waste grease are filtered out, and then the kitchen waste grease is heated and stirred to perform oil-water separation to obtain commercial grease. The process disclosed by the invention is simple, small in investment, high in efficiency and beneficial to large-scale production.

Description

technical field [0001] The invention relates to the fields of waste purification and energy recovery, in particular to a process and system for recovering kitchen waste grease. Background technique [0002] At present, there are mainly directions for the whereabouts of kitchen waste oils: one is to feed "swill pigs" without treatment as raw materials, harming human beings invisibly through the food chain; Oil" processed into "edible oil" flows back into the market, which seriously harms the health of consumers and endangers food safety; third, it is directly discharged as garbage, which not only blocks urban sewer pipes, emits rancid smell, but also seriously pollutes water sources, causing great harm to environmental sanitation. pressure. Therefore, the safe and efficient resourceful and harmless treatment of kitchen waste can not only eliminate the hazards of swill from the source, but also properly and scientifically treat kitchen waste oil to achieve harmless and resour...

AI Technical Summary

Problems solved by technology

This method not only requires a large container to stand and stratify the kitchen waste, which occupies a large area and takes a long time, but also the separation effect is not thorough enough, the oil yield is low, and the recovered waste oil contains high impurities

Especially for the northern region with severe winter climate, the oil is easy to solidify and freeze on the solid surface, making it difficult to separate

In the Chinese patents "201120365212.1---a kitchen waste oil-water separation device" and "201110115100.5---a kitchen waste oil-water separation treatment method", methods such as heating oil heat exchange and steam heating are used to overcome the severe cold and low temperature factors. However, the processing time is still very long, which is not conducive to large-scale production and affects the promotion of industrialized processing technology of kitchen waste

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