High-temperature critical treatment method and system for dioxin in waste incineration flue gas

Abstract

The invention discloses a high-temperature critical treatment method and system for dioxin in waste incineration flue gas. A first smoke pipe is mounted at the top of an incineration tower of the high-temperature critical treatment system for the dioxin in the waste incineration flue gas, and the end, away from the incineration tower, of the first smoke pipe is connected to one end of a spraying mechanism; a second smoke pipe is mounted at the top of the spraying mechanism, the end, away from the spraying mechanism, of the second smoke pipe is mounted at the top of one side of a cyclone separator in the tangential direction, a third smoke pipe is mounted at the top of the other side of the cyclone separator, and the end, away from the cyclone separator, of the third smoke pipe is connected to one end of an adsorption box; and the other end of the adsorption box is connected to an air inlet of an air blower, and an air outlet of the air blower is connected to one side of a smoke exhaust pipe. According to the high-temperature critical treatment system for the dioxin, generation of the dioxin in the waste incineration process can be restrained, the generated dioxin is effectively removed, smoke generated by waste incineration can easily reach the emission standard, the treatment effect of the dioxin is good, and the treatment cost is low.

Description

technical field [0001] The invention relates to the field of flue gas treatment, in particular to a high-temperature critical treatment method and system for dioxins in waste incineration flue gas. Background technique [0002] Dioxin usually refers to 1,4-dioxine and its derivatives. These substances are highly toxic to humans and the natural environment, and are not easy to degrade naturally in the natural environment. Dioxin It often exists in the atmosphere, soil and water as tiny particles. The main sources of pollution are chemical and metallurgical industries, waste incineration, papermaking, and pesticide production. Plastic bags used in daily life, PVC (polyvinyl chloride) soft rubber, etc. all contain chlorine. When these items are burned, dioxins will be released and suspended in the air. Therefore, it is imperative to deal with the dioxins in the discharged gas. [0003] Since dioxins may be synthesized in various processes of waste treatment, and may even be r...

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Problems solved by technology

[0005] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a high-temperature critical treatment method and system for dioxins in waste incineration flue gas: by opening the airtight door on the incineration tower, the waste and amino acid calcium are evenly mixed together Add it into the inner cavity of the incineration tower, close the airtight door, inject the reaction liquid into the inner cavity of the liquid storage bin through the liquid filling pipe, start the flamethrower, and several flamethrowers will release flames to incinerate the garbage and amino acid calcium. The flue gas passes through the filter holes on the flue gas filter plate, and the large-volume fly ash is blocked by the flue gas filter plate or attached to the bottom of the flue gas filter plate, and the vibration motor is started, and the vibration motor drives the flue gas filter plate to vibrate the large-volume fly ash. The ash falls to the bottom of the inner chamber of the incineration tower, and the flue gas enters the inner chamber of the spray chamber from the smoke inlet through the first smoke pipe, starts the infusion pump, and the infusion pump runs to pump the reaction liquid out of the liquid storage chamber through the return pipe. And transported to the spray pipe through the delivery pipe, the reaction liquid is filled with the arc spray pipe and the horizontal spray pipe, and then sprayed from the nozzle, the reaction liquid sprays the flue gas, and the reaction liquid after the flue gas treatment is supported The pipe is returned to the liquid storage chamber, and after being filtered by the liquid filter plate, it is circulated and sprayed. The reaction liquid after the flue gas treatment that has not passed through the liquid filter plate is discharged through the sewage discharge pipe, and the flue gas is discharged from the smoke outlet and passes through the second smoke pipe. The fly ash in the flue gas forms an external swirling flow and enters the inner cavity of the ash storage tank from the material receiving pipe for storage, and the remaining flue gas is transported to the adsorption chamber through the third smoke pipe. In the inner cavity of the box, after the dioxin in the flue gas is adsorbed by the adsorbent in the inner cavity of the adsorption box, the blower is started, and the blower runs to extract the flue gas and transport it to the smoke exhaust pipe, which solves the problem of the existing waste incineration process. It is easy to produce a large amount of dioxins, and it is difficult to deal with the produced dioxins and the treatment effect is poor

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