Automatic screening and environment-friendly pyrolysis device for garbage

Abstract

The invention discloses an automatic screening and environment-friendly pyrolysis device for garbage. In order to overcome the shortages of high plugging rate, dioxin generation, high initial investment, high maintenance and use expenses, and the like of a device in the existing garbage pyrolysis treatment technology. The device disclosed by the invention is provided with a screening mechanism enabling the garbage to be subjected to transversal screening and pyrolysis at the lower side of a garbage inlet, wherein a gas-phase pyrolysis chamber is arranged above the screening mechanism; a solid-phase pyrolysis chamber is arranged below the screening mechanism, the screening mechanism is provided with at least two screening rolls which are transversally arranged and move in the same direction, and a screening distance is formed between each two screening rolls. The device disclosed by the invention is used for garbage pyrolysis treatment, capable of realizing automatic screening for the garbage simultaneously during an incineration process, and implementing classified and chambered gradual pyrolysis, thus the plugging of the incineration process can be prevented, and the generation of dioxin can be better prevented; and moreover, the device has a high space utilization rate, occupies less space, is capable of reducing construction investment, has no need of an auxiliary energy, and has low maintenance and running costs.

Description

technical field [0001] The invention relates to a garbage treatment device, in particular to an environmental protection pyrolysis device for automatically screening garbage. Background technique [0002] Garbage pyrolysis is a waste treatment method widely used in developed countries. In Japan and other countries where arable land is scarce, the proportion of waste incineration and pyrolysis treatment reaches 65-80%. However, the existing waste incineration pyrolysis treatment device has the following disadvantages: [0003] First, the existing waste pyrolysis device cannot screen mixed waste at the same time as pyrolysis, and implements classified and gradual pyrolysis, so it is prone to pyrolysis stagnation and pyrolysis state changes, so that the realization of environmentally friendly thermal waste without dioxin generation solution becomes difficult and increases operation and maintenance costs. The existing garbage mixture contains domestic organic matter, plastic, ...

AI Technical Summary

Problems solved by technology

[0003] First, the existing waste pyrolysis device cannot screen mixed waste at the same time as pyrolysis, and implements classified and gradual pyrolysis, so it is prone to pyrolysis stagnation and pyrolysis state changes, so that the realization of environmentally friendly thermal waste without dioxin generation solution becomes difficult and increases operation and maintenance costs

The existing garbage mixture contains domestic organic matter, plastic, glass, tiles, metals, cement blocks, etc. It is difficult to classify and process before incineration, and the cost is high, so the garbage mixture is often used for direct incineration

However, the problem caused by the waste mixture being incinerated directly without screening is that the incineration temperature is difficult to adapt to the organic waste that is prone to dioxin and the inorganic waste that is easy to cause stagnation and affect the incineration state and slag discharge.

The congestion and blockage of the incineration process not only increases the maintenance cost, but also changes the incineration state, affects the control of the suppression of dioxin formation in the early stage of incineration, increases the difficulty and cost of subsequent dioxin treatment, and increases the subsequent flue gas purification to remove dioxins Possibility of secondary pollution caused by British substances

[0004] Second, the functional unit of the existing incinerator process flow mechanism is horizontally extended, which not only occupies a large area, but also requires a large initial construction investment, and the induced draft fan has high power, high energy consumption, and high operating costs.

In this regard, it is difficult to build without a developed economic foundation and strong investment capabilities

[0005] The third is that the existing waste incineration pyrolysis device needs a lot of auxiliary energy, but the utilization efficiency of the heat generated by waste incineration itself is not high enough, resulting in high cost of waste incineration

However, none of these technologies can automatically screen garbage during pyrolysis, classify and separate pyrolysis chambers, prevent stagnation and dioxin generation, and improve practicability and pyrolysis benefits

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