Hot galvanizing pot smoke exhaust gas collecting device

Abstract

The invention discloses a hot galvanizing pot smoke exhaust gas collecting device, and relates to the technical field of zinc pot smoke exhaust gas treatment. The hot galvanizing pot smoke exhaust gascollecting device comprises a gas collecting hood and powder spraying equipment, the gas collecting hood comprises gas collecting boxes and an air mixing box, and a conveying pipeline is connected between the powder spraying equipment and each gas collecting box; each gas collecting box comprises a gas collecting strip opening, and an air outlet is formed in each gas collecting box; and an innerspace of each gas collecting box is divided into an air equalizing chamber and a smoke dust channel from top to bottom, each smoke dust channel is communicated with the corresponding air outlet, the air mixing box comprises an air mixing channel arranged inside and a pair of air inlets communicated with the air mixing channel, the air inlets are communicated with the air outlets in the corresponding gas collecting boxes, and an air exhaust pipeline communicated with the air mixing channel is arranged on the air mixing box. The hot galvanizing pot smoke exhaust gas collecting device is constructed around a zinc pot heat preservation layer, the influence on production operation is reduced to the maximum extent, meanwhile, the viscosity of smoke particles of a hot galvanizing pot can be greatly reduced, the dust removal efficiency of a dust remover is improved, the service life of a filter material is prolonged, and the maintenance period is prolonged.

Description

technical field [0001] The invention relates to the technical field of hot-dip galvanizing pot smoke and waste gas purification, in particular to a device that can effectively collect the smoke and dust waste gas discharged from a hot-dip galvanizing pot and mix it with lubricating graphite, quicklime or talcum powder and other substances. Background technique [0002] The temperature of the melt in the galvanizing pot is about 438-450°C. In order to prevent the oxidation of metal zinc, a layer of flux must be covered on the surface of the zinc melt. The flux used is zinc chloride and ammonium chloride. Since the gasification temperature of ammonium chloride is 350°C and the temperature of the zinc bath is 438-450°C, ammonium chloride constitutes the main component of the smoke. The moment the workpiece is immersed in the high-temperature zinc liquid, the ammonium chloride in the co-solvent immediately vaporizes and decomposes HCl and NH3 with pungent odors. HCl and NH3 vola...

AI Technical Summary

Problems solved by technology

Especially the smoke and dust on the surface of the filter material is not easy to be separated even by pulse injection, which will cause long-term blockage of the dust collector, greatly reduce the air volume, and lead to a significant drop in the efficiency of the dust removal system;

[0008] (3) Difficulty in operation and maintenance and high cost: due to the blockage of the filter material by smoke and dust, it needs to be cleaned in time. According to the experience of technicians in the field, conventional polyester needle-punched felt bags or polyester fiber filter cartridges need to be cleaned once every 3 days. Replace once a month. The coated needle-punched felt bag or polyester fiber filter cartridge needs to be cleaned once a week and replaced once every 6 months, otherwise the dust removal system will be completely blocked and cannot work normally.

The cleaning work is difficult. Generally, all the filter materials are removed, and then tapped lightly to separate the attached dust from the filter materials. Then, compressed air is used to blow and remove the dust, and finally the filter materials are installed and restored one by one. The above cleaning process is not only complicated, but also It is easy to cause irreparable damage to the filter material (deformation, leakage, etc.)

[0009] To sum up, the gas collection effect of the existing smoke and dust exhaust gas purification process is unstable, and the dust removal system is easy to block and operate effectively for a long time. Therefore, a device that can effectively collect gas and reduce the viscosity of the exhaust gas is needed to ensure Technology that prevents the dust collector from being clogged

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