Second-level high-temperature gasification incineration system for rubbish

Abstract

The invention discloses a second-level high-temperature gasification incineration system for rubbish. The second-level high-temperature gasification incineration system comprises a fluidized bed gasification furnace and an incinerator. The fluidized bed gasification furnace comprises a gasified gas outlet formed in the top wall of a fluidized bed furnace body, a primary air inlet formed in the bottom of the fluidized bed furnace body, a first-level rubbish inlet and a first-level auxiliary fuel inlet. The interior of the fluidized bed furnace body is divided into a gasification room and an air room through an air distribution plate. The incinerator comprises a second-level rubbish and second-level auxiliary fuel feeding opening formed in the top wall of an incinerator body, a high-temperature smoke outlet formed in the side wall of the incinerator body, a first burning spray pipe arranged in the incinerator body and a secondary air inlet formed in the bottom wall of the incinerator body. The gasified gas outlet of the fluidized bed furnace body is communicated with the first burning spray pipe through a pipeline, and therefore gasified gas generated by first-level rubbish and first-level auxiliary fuel in the gasification room is conveyed into the incinerator, and second-level rubbish from the second-level feeding opening is incinerated at a high temperature under the assistance of second-level auxiliary fuel.

Description

technical field [0001] The invention relates to a garbage treatment system, in particular to a garbage high-temperature incineration system. Background technique [0002] With the rapid development of social economy and the continuous improvement of living standards, the output of various types of garbage has also increased sharply. At present, there are several common disposal methods of garbage, such as incineration, landfill and biological method. The landfill method requires the construction of a large area of ​​landfill and the treatment of leachate, which requires a large investment. The garbage biological method is to ferment domestic garbage, the process is complicated, the equipment performance requirements are high, and it has limitations. The waste incineration method is to use the combustible components in the waste to burn and gasify the waste to decompose the waste. It is a relatively efficient and cheap way to dispose of waste and is widely used by developed...

AI Technical Summary

Problems solved by technology

However, this garbage gasification and fly ash high-temperature melting treatment device has the following disadvantages or deficiencies: (1), the calorific value of gasification gas after garbage gasification is low, and in order to avoid producing a large amount of dioxins and furans, it uses a cyclone furnace to Combustion under the combustion of pulverized coal at high temperature makes the manufacturing cost of the equipment higher, and the use of high-quality pulverized coal for combustion not only leads to higher waste disposal costs, but also causes waste of energy; (2), only in fluidized bed gas Garbage feeding is carried out at one place of the chemical furnace, which makes the efficiency of garbage treatment low

However, this waste pyrolysis gasification incineration method has the following disadvantages or deficiencies: (1), the gasification gas after waste gasification has a low calorific value, and the temperature is lower after heat exchange with air, resulting in a lower combustion temperature in the combustion chamber. low, which will produce a large amount of dioxins and furans, causing environmental pollution; (2), only one place of the fluidized bed gasifier can be used for waste feeding, making the waste treatment efficiency low

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