Artificial fiberboard drying tail gas treatment system

Abstract

An artificial fiberboard drying tail gas treatment system comprises an absorption tower and a tail gas inlet pipe connected with the absorption tower, multiple layers of washing nozzles are arranged in the absorption tower, an absorption tower liquid outlet is formed in the bottom of the absorption tower and connected with an absorption tower circulating pump inlet, and an absorption tower circulating pump outlet is connected with a recycling pipeline; the washing water treatment system comprises a formaldehyde removal reactor connected with a discharge regulating valve, a water outlet pipe ofthe formaldehyde removal reactor is connected with a filter, a screen is arranged in the filter and is connected with a clean water tank and a slag liquid tank, and a clean water pump is arranged inthe clean water tank and is connected with the absorption tower circulating pipeline. According to the invention, particulate matters, formaldehyde and other VOC pollutants in the artificial fiberboard dry tail gas can be removed at one time, and the formaldehyde and suspended matters in the washing absorption liquid are always maintained at a low level through uninterrupted circulation treatmentof the washing absorption liquid; and the removal efficiency of dust and formaldehyde in the artificial fiberboard drying tail gas in the absorption tower spraying process is ensured.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a tail gas treatment method, in particular to an artificial fiber board drying tail gas treatment system. Background technique [0002] In the man-made fiberboard production process, glued fibers need to be dried through hot air pipelines and drying towers, and the dried tail gas is discharged out of the system after cyclone separation. Since some fine fibers, boiler flue gas dust and volatilized free formaldehyde cannot be recovered by cyclone separation during the drying process, the exhausted dry tail gas will contain particulate matter and formaldehyde, and the tail gas must be dedusted and formaldehyde-removed before it can be done. Reach the standard discharge. [0003] Because the tail gas discharged from the drying section has a large amount of flue gas, low temperature, and high humidity, and contains organic gas pollutants such as urea-formaldehyde glue a...

AI Technical Summary

Problems solved by technology

[0003] Because the tail gas discharged from the drying section has a large amount of smoke, low temperature, and high humidity, and contains organic gas pollutants such as urea-formaldehyde glue and formaldehyde, it is not suitable for direct use of filter dust removal and electric dust removal processes such as cloth bags and filter cartridges.

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