Fly ash pyrolysis dioxin removal device and system for harmless treatment of waste incineration fly ash
A waste incineration fly ash and fly ash technology, which is applied in the field of harmless disposal of waste incineration fly ash, can solve the problems of large exhaust gas pollutant emissions, high energy consumption in operation, and inability to control anaerobic atmosphere, so as to save costs, The effect of energy saving
Pending Publication Date: 2022-02-15
浙江京兰环保科技有限公司
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Problems solved by technology
[0006] The present invention aims to overcome the problems of the existing garbage incineration treatment device in the prior art that the anaerobic atmosphere cannot be controlled, the energy consumption of the operation is high, and the emission of waste gas pollutants is large, and it provides an energy-saving, cost-saving, Fly ash pyrolysis dioxin removal device and system with continuous and stable operation for harmless disposal of waste incineration fly ash
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Embodiment 1
[0023] Such as figure 1 The shown fly ash pyrolysis dioxin removal device for the harmless disposal of waste incineration fly ash includes a regenerative heating furnace 07, a fly ash spiral conveying anaerobic pyrolysis device installed in the regenerative heating furnace assembly, the cooling chamber 14 located on the fly ash spiral conveying aerobic pyrolysis assembly, the heating furnace fan 15, two reversing valves 11 and the dust collector 20; the cooling chamber is located outside the regenerative heating furnace; the flying The outlet of the ash spiral conveying anaerobic pyrolysis component is connected to the inlet of the dust collector; the outlets of the cooling chamber and the dust collector are both connected to the inlet of the heating furnace fan; the outlet of the heating furnace fan is connected to two reversing valves; Two reversing valves are connected with the regenerative heating furnace.
[0024] Wherein, the fly ash spiral conveying anaerobic pyrolysis...
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The invention belongs to the technical field of harmless treatment of waste incineration fly ash, and relates to a fly ash pyrolysis dioxin removal device and system for harmless treatment of waste incineration fly ash. The device comprises a heat accumulating type heating furnace, a fly ash spiral conveying anaerobic pyrolysis assembly, a cooling chamber, a heating furnace fan, a reversing valve and a dust remover; the cooling chamber is positioned outside the heat accumulating type heating furnace; an outlet of the fly ash spiral conveying anaerobic pyrolysis assembly is connected with an inlet of the dust remover; outlets of the cooling chamber and the dust remover are connected with an inlet of the heating furnace fan; an outlet of the heating furnace fan is connected with the reversing valve; and the reversing valve is connected with the heat accumulating type heating furnace. According to the fly ash pyrolysis dioxin removal device and system for the harmless treatment of the waste incineration fly ash of the invention, dioxin in the waste incineration fly ash can be decomposed at low temperature, the concentration of the dioxin in the waste incineration fly ash is reduced to 50ng-TEQ / kg. The method has the advantages of energy consumption-saving and cost-saving performance, continuous and stable operation and capability of effectively reducing pollutant discharge.
Description
technical field [0001] The invention belongs to the technical field of harmless disposal of waste incineration fly ash, and in particular relates to a fly ash pyrolysis dioxin removal device and system for the harmless disposal of waste incineration fly ash. Background technique [0002] With the improvement of residents' living consumption level, the generation of domestic waste has increased year by year. At present, the disposal of excess domestic waste, in accordance with national guidelines, requires the use of waste incineration disposal process to reduce the amount of domestic waste. After domestic waste is incinerated, 3%-5% of incineration residues will be produced, which is a huge amount every year. As for waste incineration fly ash, it is governed as hazardous waste, and its hazardous waste code is HW18. [0003] For the waste incineration disposal process, the currently commonly used disposal routes are fly ash landfill, fly ash washing cement kiln co-processin...
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IPC IPC(8): B09B3/40B01J6/00F27D17/00
CPCB01J6/008F27D17/004F27D2017/007
Inventor 赵星磊朱占恒李斌邵二言孙青松张倩倩
Owner 浙江京兰环保科技有限公司