Intelligent gas collecting device for waste gas treatment in hot galvanizing production technology

Abstract

The invention discloses an intelligent gas collecting device for waste gas treatment in a hot galvanizing production technology. A movable cover face on the top face of a gas collecting cover body, communicated with the gas raising face of a hot galvanizing tank, of the device is connected to a cover face driving motor and driven by the cover face driving motor so that the top face of the gas collecting cover body can be opened and closed. An air pipe is positioned and installed between a tank liquid line in the hot galvanizing tank and the top face of the gas collecting cover body. A gas collecting cover position sensor is arranged between the tank liquid line in the hot galvanizing tank and the top face of the gas collecting cover body. The cover face driving motor, a draught fan and the gas collecting cover position sensor are electrically connected with an electric control device and controlled by signals sent by the electric control gear. By means of the device, 100 percent of the collection rate of technological waste gas can be reached, the proportion of target gas collecting objects is larger than 90 percent, the investment cost is reduced, the occupied space is small, operation and observation of workers are not affected, and automatic control and remote control of a whole waste gas treatment system can be achieved through a PLC according to needs.

Description

technical field [0001] The invention relates to a gas-collecting device for waste gas treatment, in particular to an intelligent gas-collecting device suitable for but not limited to the treatment of waste gas in a hot-dip galvanizing production process, and belongs to the field of environmental pollution control equipment. Background technique [0002] Hot-dip galvanizing, also known as hot-dip galvanizing, is a method in which steel components are immersed in molten zinc to obtain a metal coating. During the hot-dip galvanizing process, a large amount of dusty waste gas such as ammonium chloride, zinc chloride, zinc vapor and zinc oxide dust will escape from the zinc pool. If not controlled, it will pollute the workshop and affect human health. If it is not treated, it will be discharged from the workshop to the atmosphere, causing air pollution. Therefore, in order to prevent the spread of dusty exhaust gas, it is necessary to configure an exhaust gas discharge system ...

AI Technical Summary

Problems solved by technology

Although the gas collection hood of the above method can solve the problem of waste gas collection to a certain extent, it still has the following defects: (1) The gas collection efficiency is difficult to reach 100%, and the process

[0005] The leakage rate of exhaust gas pollutants is too high, and it is impossible to realize 100% organized discharge of air pollutants, which leads to poor occupational health environment in the production workshop, affects the health of production workers, and finally leads to excessive turnover of staff, increasing personnel training The frequency and production efficiency are low; (2) In the case of collecting the same amount of gas, the target gas collection target (that is, hot-dip galvanizing process waste gas or other process waste gas) ratio of the gas collection hood used in the existing technology is too low, and the air in the workshop The proportion is too high, causing most of the processing capacity of the exhaust gas treatment system to be wasted on unnecessary treatment of workshop air; (3) when the existing air collection device collects the same quality of atmospheric pollutants, it needs to form a more The exhaust air generated by high wind speed needs to be equipped with a larger fan, so that the specifications of the main treatment equipment, air ducts, chimneys, etc. Promotion of exhaust gas treatment application and energy saving and emission reduction; (4) The gas collecting hoods used in the current prior art are all gas collecting hoods with fixed shapes, which are usually located directly above or on the side of the air inlet of the air pollution source during installation, and form a Space hinders, which is not conducive to the operation of production personnel; (5) The gas collecting hood in the prior art does not have intelligent functions, and the gas collecting device does not have the function of intelligently guiding the opening or operation of the exhaust gas treatment system

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