Device and process method for preparing fertilizers by using kitchen waste

Abstract

The invention discloses a device and process method for preparing fertilizers by using kitchen waste. The device comprises a pretreatment system, a main reaction system and a reprocessing system, thepretreatment system comprises a lifting table, a sorting table, a storage funnel, a spiral conveyor and a crushing device, and the main reaction system comprises a first reaction kettle, a second reaction kettle and an electric heating oil guide tank; the reprocessing system comprises a water ring type vacuum pump, a storage hopper is fixedly connected with the sorting table, a spiral conveyor iscommunicated with the storage hopper, the discharging end of the spiral conveyor communicates with a crushing device through a discharging pipeline, and the discharging end of the crushing device communicates with feeding openings of the first reaction kettle and the second reaction kettle. heat conduction coil pipes are arranged in the first reaction kettle and the second reaction kettle, the heat conduction coil pipes communicate with an electric heating oil guide tank in parallel through a three-way enamel valve and a heat conduction pipeline, and the first reaction kettle and the second reaction kettle communicate with a water ring vacuum pump; the invention is high in integration and automation degree, and can effectively meet regional centralized kitchen waste treatment.

Description

technical field [0001] The invention relates to the technical field of resource treatment and effective utilization of kitchen waste, in particular to a device and a process method for preparing fertilizer from kitchen waste. Background technique [0002] With the rapid development of social economy and the acceleration of urbanization, the output of kitchen waste in my country has been increasing rapidly year by year. According to incomplete statistics, the production of kitchen waste in my country has increased from 78.23 million tons to 127.5 million tons in 2010-2019, and it has increased year by year trend. The amount of food waste produced in my country is increasing continuously, and the food waste treatment industry has a very large room for growth, and the potential market space is huge. Therefore, it is in line with the trend of social development to use special equipment to treat and reduce the amount of kitchen waste, make it harmless, turn it into a resource, an...

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Problems solved by technology

[0003] At present, my country's food waste treatment industry is still in its infancy, and there are still the following problems in food waste treatment: poor storage, transportation, and collection of food waste, prominent problems in traditional food waste treatment methods, reduction, harmlessness, and resources issues such as low utilization

The use of kitchen waste for composting can effectively realize the resource utilization of food waste, but the traditional composting method also has the following problems: the pollution of harmful organic matter and heavy metals cannot be well solved, and the harmlessness is not complete; The treatment process cannot be absolutely closed, which is likely to cause secondary pollution; the composting treatment cycle is long, the area is large, and the sanitary conditions are relatively poor; the loss of organic matter is large, up to 30-40%

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