Drying furnace for household garbage and drying method

Abstract

The invention discloses a drying furnace for household garbage and a drying method. The drying method includes the following steps that firstly, the household garbage is preprocessed so that loose and uniform to-be-processed garbage can be obtained; secondly, the to-be-processed garbage is placed in the drying furnace to be dried, the drying temperature is 100 DEG C to 140 DEG C, the machine speed is 15 r/min to 20 r/min, the drying time is 3 min to 8 min, and the to-be-processed garbage is blown into a suspended state in the drying process; and thirdly, air separation is performed, wherein the dried garbage is subjected to air separation so that small-specific-gravity garbage and large-specific-gravity garbage can be obtained, and the small-specific-gravity garbage and the large-specific-gravity garbage are packaged and subjected to resource utilization. The drying furnace for the household garbage is further included in the invention. By means of the drying furnace for the household garbage and the drying method, firstly, secondary pollution in the processing process can be effectively eliminated; secondly, the processing cost can be greatly reduced, the processing efficiency is improved, and reduction, reclamation and harmlessness of the household garbage are efficiently and fast achieved.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a drying oven and a drying method for domestic garbage. Background technique [0002] my country is the most populous country in the world, and it also produces the largest amount of domestic waste. The amount of new waste generated every day is about 1.4 million tons, and the total amount of waste generated every year is about 511 million tons, and it is increasing at an annual rate of about 8%. According to incomplete statistics, there are about 800 million tons of garbage in the country, covering an area of ​​about 500 million square meters. Many cities have been surrounded by garbage, and many villages have also been surrounded by garbage. Therefore, urban and rural domestic garbage has become a major public hazard. , the governance situation is very severe and urgent. [0003] Due to various reasons such as my country's current economic and technological level and s...

AI Technical Summary

Problems solved by technology

The landfill method accounts for about 90% of the total waste disposal. Whether it is a simple landfill or a sanitary landfill with anti-seepage measures, a large amount of land needs to be occupied. It is obvious that non-renewable land resources are used to absorb and process the increasing domestic waste. is unscientific and unsustainable

In addition, a large amount of landfill leachate will pollute the soil and groundwater, and a large amount of toxic and harmful gases will pollute the air. Combustible gases such as methane also have serious safety hazards such as combustion or explosion.

As for the incineration method, open-air burning, which is relatively common in rural areas at present, produces a large amount of toxic and harmful gases, which seriously affects the environment and human health, and should be resolutely banned.

As for the domestic waste incineration power generation projects introduced by many large and medium-sized cities in my country in the past ten years, although they have certain effects in harmless treatment and thermal energy conversion and utilization, they do not need to occupy land continuously, nor will they damage land and groundwater sources. However, it has various disadvantages such as high initial investment, high operating cost, and secondary pollution that are difficult to overcome, making it difficult to promote

[0004] In short, there are more and more urban and rural domestic garbage in our country, which has accumulated to the point where it cannot be handled, and the environment has become unbearable.

The existing domestic waste treatment technologies and methods cannot solve the problem of secondary pollution during the treatment process, and the treatment cost is high

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