High-temperature cyclone separation type three-waste co-combustion furnace

Abstract

The invention discloses a high-temperature cyclone separation type three-waste co-combustion furnace which comprises a combustion furnace and a separator communicated with an ash outlet of the combustion furnace. The combustion furnace is provided with a secondary air device, a combustor and a spiral coal feeder, a smoke outlet is formed in the upper portion of the separator, and a waste gas premixing device is installed on the side portion of the combustion furnace. An air distributing device is installed on the bottom of the combustion furnace, and an igniter and an air inlet are installed in the lower portion of the air distributing device. A central cylinder stretching downwards is arranged at the smoke outlet in the top of the separator, the lower end face of the central cylinder and the central line of the ash outlet are on the same horizontal plane, and a gas outlet pipe is connected to the smoke outlet in the top of the separator. A discharge port is formed in the bottom of the separator, the discharge port is communicated with a material return port in the lower portion of the combustion furnace through a material return pipe formed by sequentially connecting a first vertical section, a horizontal section, a second vertical section and an inclined section, the first vertical section is connected with the discharge port, the bottom end of the inclined section is connected with the material return port formed in the lower portion of the combustion furnace, and a material return device is arranged at the connecting position of the first vertical section and the horizontal section.

Description

technical field [0001] The invention relates to a high-temperature cyclone separation type three-waste mixed combustion furnace. Background technique [0002] The three-waste co-combustion furnace uses the combustion characteristics of the fluidized bed boiler and adopts the mode of blowing gas waste heat boiler to co-combust the waste slag, waste ash and waste gas generated by gas production (simultaneous combustion of the gas after hydrogen extraction) to generate high-temperature flue gas , after being dedusted by the combined dust collector, it enters the waste heat boiler arranged behind to generate steam waste heat utilization device. [0003] The earliest gas-generating and blowing gas recovery device has a combustion form of upward combustion and heat storage, which uses high-calorific-value syngas to burn and store heat, and then burns low-calorific-value gas-making and blowing gas to recover heat and by-product steam to protect the environment. The improved gas-ma...

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Problems solved by technology

Although this kind of blowing gas waste heat recovery device has solved many problems existing in the previous generations, and has also made many improvements, it has achieved good results, but most of the existing fluidized bed blowing gas recovery devices cannot carry out material return, boiling mixing, etc. After the high-temperature flue gas generated by the combustion furnace enters the built-in combined dust collector, the large particles of ash are separated from the flue gas and discharged out of the furnace. This part of the unburned ash is directly discharged to waste a lot of energy and reduce The combustion efficiency of the whole co-combustion furnace is improved

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