Smoke combustion chamber and environment-friendly household garbage incineration system

Abstract

The invention discloses an environment-friendly household garbage incineration system. A carbonization zone and an incineration zone are arranged in an incineration furnace. Garbage enters the incineration zone after being carbonized. The upper space of the incineration zone is a garbage combustion chamber. A smoke outlet of the garbage combustion chamber is connected with a smoke inlet of a smoke combustion chamber at the top of the garbage combustion chamber through a pipeline. A smoke outlet of the smoke combustion chamber communicates with a first-stage heat exchanger. The upper space of the carbonization zone is connected with an air inlet of a draught fan through a pipeline. An air outlet of the draught fan is connected with the bottom of the smoke combustion chamber through a pipeline. A smoke bypass pipeline opening is formed in a main flue at the back of the first-stage heat exchanger to be connected with the carbonization zone through a pipeline. By means of the environment-friendly household garbage incineration system, dioxin emission caused by garbage incineration is effectively treated, the cost is greatly lowered, there is no need to sort garbage or add subsidized fuel before incineration, the temperature and time of drying, carbonization and combustion of garbage and smoke combustion are all controllable, garbage is combusted fully, dioxin is split thoroughly, regeneration of dioxin can be effectively prevented, and the smoke emission is superior to the national standard.

Description

technical field [0001] The invention belongs to the technical field of domestic waste incinerators, in particular to a flue gas combustion chamber and an environment-friendly domestic waste incineration system. Background technique [0002] Domestic waste incineration is considered to be one of the better methods of domestic waste disposal due to its obvious reduction, relatively easy control of environmental pollution, use of waste heat from incineration, relatively small landfill, and sustainable use. The key point is that domestic waste incineration contains dioxin-like harmful substances, mainly chlorine in domestic waste, which is generated by incineration of organic matter, and exists in the flue gas in a gaseous state or attached to the smoke. Dioxin is highly toxic and carcinogenic. It is solid under standard conditions, with a melting point of 303-305°C. It is extremely insoluble in water, easy to accumulate in organisms, and difficult to discharge. It is quite stab...

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Problems solved by technology

[0004] At present, the cost of dioxin treatment and control in grate furnaces widely used in large cities in my country is very high. , does not constitute a reasonable system structure, the temperature of the combustion furnace must be controlled at a high temperature of 850°C, and combustion-supporting materials must be added, which must increase the cost

Second, waste combustion and flue gas combustion are carried out in the same furnace space, and it is difficult to adhere to the sufficient and necessary conditions of the 3T+E principle. The dioxins in the flue gas cannot be effectively decomposed, and the flue gas is cooled from 850°C to In the process below 200 °C, the environmental conditions for the regeneration of dioxins cannot be effectively weakened, resulting in a high content of dioxins in the flue gas

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