Household garbage treatment method and treatment system

Abstract

The invention provides a household garbage treatment method and treatment system. According to the treatment method, household garbage is broken, recoverable garbage is sorted out, and an anti-corrosion modifier is added to be stored; the stored garbage is subject to breaking, and hot air drying and grinding of a cement kiln, powder selection is carried out, and granule matter is burnt. In the process, the garbage is subject to drying and grinding and then is burnt, the side effect of garbage water or garbage waste gas on safety operation of a cement kiln system can be reduced as far as possible, the secondary pollution is reduced, harmless, low-cost and low-investment treatment of household garbage is ensured, and the method and system meet the sustainable development circular economy direction. According to the treatment system, the special advantage of the cement kiln is sufficiently used, in combination with the garbage system, the capital investment is reduced, the garbage treatment capacity is improved, garbage applicability is improved, and the system is a harmless, recycling and low-cost treatment system.

Description

technical field [0001] The invention relates to the technical field of domestic waste treatment, in particular to a domestic waste treatment method and a treatment system. Background technique [0002] Cement kiln co-processing of urban domestic waste refers to a waste disposal method that achieves the purpose of decomposing, degrading, eliminating, inertizing and stabilizing the toxic characteristics of solid waste through high-temperature incineration and high-temperature sintering of cement clinker mineralization. It has the technical advantages of wide application range, large consumption, strong adaptability to various wastes, large heat capacity, large thermal inertia and high heat transfer efficiency. The core of the technology of co-processing urban domestic waste in cement kilns is to make use of domestic waste, combustible components in waste and ash materials in the production process of cement, and apply appropriate technical solutions to make waste harmless, red...

AI Technical Summary

Problems solved by technology

[0017] The potential moisture content of garbage is high, generally 40-50%, and the high one can exceed 60%. A large amount of moisture in the incineration will make the garbage difficult to burn, and a large amount of water vapor generated in the combustion will increase the humidity of the cement kiln flue gas and reduce the system temperature. , which has a negative impact on the safe operation of the cement kiln and energy saving and consumption reduction

Especially for the decomposed CaO in the decomposition kiln, it will easily absorb water, which will reduce the decomposition rate of CaO entering the kiln, thus affecting the output of the cement kiln

Therefore, in the waste incineration process, most of the waste incinerators are set up to incinerate waste independently, while the process of direct incineration in cement kilns is difficult to achieve

[0018] Garbage independent incineration process is relatively difficult to burn, and in order to eliminate the influence of dioxins, garbage incineration requires an incineration temperature above 850 ° C, so the combustion must be completed by adding combustion-supporting fuel, which cannot make full use of the high temperature of the cement kiln Favorable conditions of an alkaline environment and resulting in increased waste disposal costs and infrastructure investment

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