Method and device for chemical-looping incinerating garbage

Abstract

The invention discloses a method and a device for chemical-looping incinerating garbage. The method comprises the following steps of firstly, pouring the garbage into a fuel reactor, and pretreating;then introducing an oxidation-state oxygen carrier into the fuel reactor, and carrying out oxidation reaction on a treated garbage product and the oxidation-state oxygen carrier; further introducing an oxidation reaction product into a fuel cyclone separator, wherein CO2 and water vapor are used as a fluidizing gas so as to be cyclically imported into the fuel reactor, and a reduction-state oxygencarrier is imported into an air reactor through a classifier; and finally, carrying out reduction reaction on the reduction-state oxygen carrier and air in the air reactor, and re-importing a generated oxidation-state carrier into the fuel reactor for circulating the oxygen carrier. The device comprises the fuel reactor, the air reactor, a first circulator and a second circulator. The method forchemical-looping incinerating the garbage is accomplished through the device, so that the emission of pollutants is reduced, and the garbage can be incinerated fully and stably.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a method and device for chemical chain incineration of garbage. Background technique [0002] With the improvement of people's living standards and the acceleration of urbanization, the output of urban domestic waste has increased year by year. How to dispose of waste with high efficiency and low pollution has become a key problem that needs to be solved urgently. The existing waste treatment technologies mainly include sanitary landfill, high-temperature composting and incineration. Landfilling takes up a lot of valuable land resources, and there will be a lot of malodorous gas during the composting process, and the effect of making fertilizer is not good. And waste incineration is helpful to realize volume reduction, recycling and harmless treatment of waste, and waste incineration can reduce its weight and volume by more than 80%. Therefore, incineratio...

AI Technical Summary

Problems solved by technology

[0003] Conventional waste incineration technology uses air as the oxidant for incineration, that is, the waste is directly incinerated in the incinerator using air, so the waste incineration process is accompanied by the generation of gaseous pollutants, such as SO X , NO X Such pollutants will be produced in large quantities, and the pollutants need to be treated again. If the waste incineration process is not properly controlled, toxic substances such as dioxin will be produced.

In addition, because the conventional waste incineration technology directly uses high-temperature incineration of waste without pretreatment of the incinerated waste, the waste incineration process is insufficient, and the high chlorine content in the waste will also cause the incineration process. unstable

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