Thermal cracking gasification oven for city domestic garbage

Abstract

The invention relates to the hot cracking gasifying treatment of the urban rubbish and the equipment. The method can adopts the non-selected rubbish to burn and gasify directly, uses the heat energy produced by the organics of the rubbish to crack the organics, the residual heat of the cracking gas to remove the water in the rubbish and the physical form characteristic of the rubbish to purify the furnace gas. The rectangle gasifying furnace (1) comprises eight main structural parts: the burner gas lead-out assembly (2), the feed cabin (3), the rectangle suction cabin (4), the rectangle drying chamber (6), the rectangle gasifying chamber (8), the fuel return heating combustion chamber (10), the melting combustion chamber (12), the slurry cabin (14). The invention can effectively prevent the producing of dioxin and does not have the high-cost and complex exhaust treatment processes of the usual rubbish burning treatment.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, and focuses on the field of methods and equipment for thermal cracking and gasification treatment of urban domestic waste. Background technique [0002] Garbage incineration is currently the most effective way to deal with garbage in the world, and 50%-80% of domestic garbage in developed countries is treated by incineration. However, waste incineration will cause air pollution, and the biggest pollution comes from highly toxic dioxins (PCDD). Therefore, developed countries have set strict PCDD emission standards for waste incineration. Over the years, research on incineration of garbage has found an incineration method that can effectively avoid the generation of PCDD-waste pyrolysis gasification technology, specifically an incineration treatment method that makes garbage secondary combustion. In recent years, a variety of garbage pyrolysis gasifica...

AI Technical Summary

Problems solved by technology

However, most of these products are rarely used in my country at present. The main reason is that these garbage gasifiers have high requirements on the selectivity of the furnace charge, the processing cost is high, and the economic benefits are not obvious.

At present, the most advanced domestic and foreign municipal waste gasification treatment technology is the Canadian CAO waste pyrolysis gasification device, but due to the high price and the need for high government subsidies, it is difficult to be accepted by developing countries

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