Oil-gas-solid multi-fuel solid heat carrier furnace

Abstract

The invention provides an oil-gas-solid multi-fuel solid heat carrier furnace, which can comprehensively utilize various fuels such as pyrolytic oil, pyrolytic gas and pyrolytic carbon obtained after pyrolysis of household garbage, supplements external solid heat carriers to serve as circulating ash, achieves multi-fuel combustion of the various fuels such as oil, gas and carbon, guarantees combustion stability, and enables temperature fields in the furnace to be evenly distributed. According to the solid heat carrier furnace, pyrolytic oil, pyrolytic gas and pyrolytic carbon obtained after pyrolysis of household garbage can be comprehensively utilized, and meanwhile large-proportion blending combustion of gas-state fuel and oil-state fuel is achieved. Compared with a conventional circulating fluidized bed, the oil-gas-solid multi-fuel solid heat carrier furnace has the advantages that different types of combustors are arranged in a layered mode, so that a partitioned combustion mode that a large amount of pyrolytic gas and pyrolytic oil are fed into the furnace from a dilute-phase area to be combusted and pyrolytic carbon is combusted at the bottom of the furnace is achieved, the temperature in a hearth is more uniform, and the excess air coefficient of overall air distribution is smaller.

Description

technical field [0001] The invention belongs to the technical field of pyrolysis and environmental protection treatment of organic solid waste, and in particular relates to an oil-gas-solid multi-fuel solid heat carrier furnace. Background technique [0002] With the development of social economy and the improvement of people's living standards, the total amount of domestic waste is increasing continuously. Environmental pollution caused by traditional domestic waste treatment technology has become a difficult problem for social development. The domestic waste pyrolysis technology can maximize the harmlessness and recycling of domestic waste, and realize the near-zero emission of dioxins. Therefore, the pyrolysis of domestic waste has great advantages in protecting the environment. After the domestic waste is pyrolyzed, various fuels such as pyrolysis gas, pyrolysis oil and pyrolysis carbon with certain calorific value are produced simultaneously. Among them, pyrolysis oi...

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Problems solved by technology

[0005] For the solid pyrolytic carbon in the waste pyrolysis product is not easy to burn, the conventional fluidized bed generally does not set the burner at the bottom; some furnace types set the burner at the bottom, but it is only used when starting, and the bottom burner does not work during normal operation , so the primary air temperature of the conventional fluidized bed is too low to make the pyrolytic carbon burn smoothly

[0006] At present, there is no circulating fluidized bed furnace type that can burn oil and gas in a large proportion, which can adapt to various fuels such as oil, gas and solid after pyrolysis of domestic waste, and can realize the circulation of solid heat carriers in the furnace.

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