Dioxin retardant spraying device and hazardous waste treatment system and method

Abstract

The invention relates to a dioxin retardant spraying device and a hazardous waste treatment system and method. The spraying device comprises a first adding mechanism and a second adding mechanism, the first adding mechanism is used for adding a powder retardant, and the second adding mechanism is used for adding a liquid retardant; a solid-liquid premixing mechanism communicates with the first adding mechanism and the second adding mechanism and is used for enabling the powder retardant and the liquid retardant to be fed and premixed through the first adding mechanism and the second adding mechanism; a power mechanism communicates with the first adding mechanism and the solid-liquid premixing mechanism and is used for blowing the powder retardant into the solid-liquid premixing mechanism from the first adding mechanism, so that the powder retardant and the liquid retardant are convected and mixed in a premixing part to form a retardant mixture; a venturi mechanism is provided with a first connector and a second connector, and the first connector is fixedly connected with a discharge port of the solid-liquid premixing mechanism; and a spray head is mounted on the second connector and is used for spraying a retardant mixture into the external device.

Description

Technical field [0001] The present invention relates to the field of harsh waste treatment, and more particularly to a dioxin blocker injection device, a harsh waste treatment system and method. Background technique [0002] Dioxin generally refers to a group of polychlorinated planar aromatic compounds having similar structural and physicochemical properties, which have strong toxicity and can cause cancer. Such substances are mainly burn and various industrial production by products, essentially of incineration industries is the main source of dioxin in the environment. At present, with the improvement of the national environmentally friendly emission supervision system, all provinces have requested the excessive emission standards after the crisis incineration, to minimize or eliminate environmental health problems caused by dioxins. [0003] In the relevant technique, when purification of the flue gas generated after the crisis burning, although it is possible to substantiall...

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Problems solved by technology

[0003] In related technologies, when the flue gas generated after hazardous waste incineration is purified, although it can basically meet the EU's 2010 pollutant emission standards, it cannot meet the more stringent ultra-low emission requirements

Taking the highly toxic pollutant dioxin as an example, its purification technology requires regular maintenance and cleaning to eliminate its memory effect so that its emission can reach 0.1ng I-TEQ / Nm 3 However, it is precisely because of the need for more frequent maintenance and dust removal operations that the purification technology of dioxins in related technologies cannot achieve long-term, continuous, stable and standard discharge.

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