Circuit board smelting organic tail gas treatment system

A technology for exhaust gas treatment and circuit boards, which is applied in the field of solid waste resource utilization, can solve the problems of difficult treatment, polluted soil, and large environmental pollution, and achieves the effect of meeting emission standards and reducing dioxin content.

CN114459253APending Publication Date: 2022-05-10荆门格林循环电子废弃物处置有限公司 +1

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: 荆门格林循环电子废弃物处置有限公司
Publication Date: 2022-05-10

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Abstract

The invention discloses a circuit board smelting organic tail gas treatment system which comprises a smelting unit, a waste heat unit, a cooling unit, an activated carbon ejector, a cloth bag dust removal device, a desulfurization absorption tower and a secondary denitration unit, the waste heat unit comprises a waste heat boiler, and the cooling unit comprises a spray cooler and a temperature monitor; the waste heat boiler, the spray cooler, the activated carbon ejector, the cloth bag dust removal device, the desulfurization absorption tower, the heat exchanger and the secondary denitration unit are sequentially communicated in the flowing direction of tail gas generated by the smelting unit, and the tail gas reaching the standard is discharged from a gas outlet of the secondary denitration unit. The temperature of the tail gas at the smelting furnace, the CO concentration at the waste heat boiler and the nitrogen oxide content at the denitration spray gun are monitored and adjusted in real time, and rapid cooling of the spray cooler is matched, so that the dioxin content in the tail gas after circuit board smelting is remarkably reduced, and the treated tail gas meets the emission standard.

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Description

technical field

[0001] The invention relates to the technical field of resource utilization of solid waste, in particular to a circuit board smelting organic tail gas treatment system. Background technique

[0002] Dioxin PCDDs are persistent organic pollutants UPPOP that are not intentionally produced in natural combustion and industrial production. Compounds, including polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), are two types of tricyclic aromatic hydrocarbon compounds, and the number of substitutions of chlorine atoms in the molecular structure is 1 to 8. Dioxins are neither produced nor used by humans, but are usually by-products of combustion and various industrial processes. Dioxin is a class of highly toxic substances, and its toxicity is equivalent to 130 times that of the well-known highly toxic substance cyanide and 900 times that of arsenic; experiments have shown that exposure to environments containing PCDD or PCDF can caus...

Claims

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