Reverse fire type pyrolysis disposal technology and device for household waste

Abstract

The invention relates to the field of waste disposal, in particular to a reverse fire type pyrolysis disposal technology and device for household waste. A technological method comprises the followingsteps of 1 waste collecting and storing, 2 waste crushing and sorting, 3 high-temperature waste drying, 4 waste pyrolyzing, 5 gas condensing, 6 gas purifying and 7 gas reutilizing. The device comprises a feeding system, a material storing box, a crushing machine, a dewatering device, a drying device, an incinerator, a dust removing device, an exhaust gas furnace, an exhaust gas purifying device and auxiliary devices connected with the above devices. The technology is set for the characteristics of rural waste, pre-disposal is conducted by adopting the three-stage crushing machine, pyrolyzing is conducted by adopting a reverse fire type gasification furnace, influences on the ecological environment can meet the requirement of the II type standard, no influence on the surrounding is generated, and the purposes of recycling, high efficiency, environmental friendliness and clean energy sources are achieved in the disposal process.

Description

technical field [0001] The invention relates to a garbage treatment device, in particular to a domestic garbage backfire type pyrolysis treatment process and device. Background technique [0002] Rural domestic waste is a very valuable renewable resource. It is understood that a town with 20,000 people produces about 8,000 tons of domestic waste every year; after field investigation and classification, the composition of domestic waste produced by villages and towns in the south of the Yangtze River is as follows: [0003] The content and composition of domestic waste in general rural areas (Nanjing area) are as follows: [0004] [0005] The composition of domestic waste in villages and towns close to the city is: [0006] [0007] Domestic waste recycling and calorific value [0008] [0009] In the past, most of these domestic wastes were incinerated in the open air, and some were landfilled. However, this treatment method was not thorough. A lot of domestic w...

AI Technical Summary

Problems solved by technology

Rural garbage disposal mainly adopts on-site stacking, landfilling, incineration, etc., so a lot of on-site stacking of garbage will occupy a large amount of land, affect industrial and agricultural production, destroy surface vegetation, seriously affect the growth of crops, lead to a reduction in food production, and seriously affect Sustainable development of rural social economy

Because the villagers dump the household garbage into the cultivated land, the long-term accumulation of garbage not only pollutes the environment, occupies a large area of ​​land, but also destroys the soil, reduces the fertility of the soil, and leads to a reduction in food production.

[0012] (2) Pollution of soil, water, and atmosphere

Rural people dump domestic garbage into rivers and reservoirs at will, resulting in turbid sewage, foul-smelling and unpleasant scenes, and rivers and reservoirs have been seriously polluted

[0013] (3) Harmful to human health

Some persistent organic pollutants are difficult to degrade in the environment. If such waste enters the water body or seeps into the soil, it will seriously affect the health of present and future generations, and will also have a long-term impact on the ecological environment that cannot be underestimated.

Residual toxic substances accumulate in animals and plants, seriously affecting the growth of animals and plants, and seriously destroying the ecological balance.

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