Harmless incineration disposal system and method for disposing domestic refuges

Abstract

The invention discloses a harmless incineration disposal system and a method for disposing domestic refuges. The system consists of a refuge derived fuel (RDF) pre-production sub-system, a drying and incinerating sub-system and a fume purification and treatment sub-system. The RDF pre-production sub-system comprises a bag breaking machine, a sorting mechanism, a rough breaking machine, a drying machine, a fine breaking machine and a RDF forming machine which are sequentially connected by a conveying mechanism. The drying and incinerating sub-system comprises an incinerator, a drying machine and corresponding matched fume pipes, which are connected, wherein a feeder connected with the discharge port of the rough breaking machine is arranged at the feed port of the drying machine, and a discharging machine connected with the feed port of the fine breaking machine is arranged at the discharge port of the drying machine. The fume purification and treatment sub-system comprises a cyclone dust catcher, a cloth bag dust catcher, a turbulent ball column water dust catcher and a chimney. The harmless incineration disposal system and the method for disposing domestic refuges can thoroughly dispose the domestic refuges in small towns and cities and have the obvious advantages of reasonable and scientific design, easy thorough incineration disposal process, good disposal effect and no secondary pollution.

Description

(1) Technical field: [0001] The present invention relates to an environmental protection equipment for the harmless treatment of garbage, in particular to a kind of equipment which adopts the combination of pre-production of derivative fuel RDF (also known as garbage solid fuel) and drying, incineration and flue gas purification treatment, which is conducive to the full incineration of domestic garbage. Harmless incineration treatment system and treatment method. (two) background technology: [0002] With the acceleration of the modernization process and economic development, urbanization is also accelerating, and all kinds of garbage, especially domestic garbage, are increasing sharply. The amount of garbage produced every year has exceeded 200 million tons, and the annual rate is still more than 10%. increment. At present, domestic urban and rural domestic garbage centralized treatment methods mainly include sanitary landfill method, composting method, direct incineration...

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Problems solved by technology

The disadvantages of the sanitary landfill method are: difficult site selection, large investment, inability to reduce waste, and difficult disposal of waste seepage, causing secondary pollution of soil and water sources, and difficulty in land reuse.

my country has also begun to take the road of waste incineration suitable for national conditions, but the existing waste incinerators usually use fuel injection combustion technology to fully burn domestic waste, resulting in complex structures, and consume a lot of fuel, which makes the operating costs raised

Although people have developed and used pyrolysis incinerators with sufficient combustion (incineration temperature greater than 850°C) and high pyrolysis gasification efficiency to treat domestic waste with high moisture content and low calorific value, the complex structure of the pyrolysis furnace can truly realize the It is not easy to incinerate low-calorific domestic waste with a large amount of flue gas, high dust and harmful components for low-cost and high-efficiency harmless treatment

And because most of the domestic garbage in cities and towns below the county level in my country contains high moisture and dust (including inorganic substances), water and dust are as high as 80% of the total mass of domestic garbage, and its low calorific value is generally less than 3344KJ / kg (equivalent to 800Kcal / kg) , so it is quite difficult to promote the harmless incineration treatment technology with a waste incineration temperature greater than 850 °C

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