Curing oven tail gas environmental protection treating system

Abstract

The invention relates to a curing oven tail gas environmental protection treating system which is provided with a box for smoke treatment. A smoke collecting hood is arranged at the upper portion of the box, an air curtain blowing device is arranged at an outlet of a curing oven, and an air knife blowing device is arranged at the position of a strip steel penetration outlet of the box; the air curtain blowing device comprises an air curtain draught fan, an air inlet of the air curtain draught fan is connected into the curing oven through a pipe, and an air outlet of the air curtain draught fancommunicates with two air curtain gas curtain structures through pipes at the same time; the air knife blowing device comprises an air knife draught fan, an air inlet of the air knife draught fan isconnected with a mixed gas pipe, and an air outlet of the air knife draught fan is connected with two air knife structures through a pipe and an adjusting valve; and an air knife temperature detectingpoint is further arranged on the pipe on the side of the air outlet of the air knife draught fan. The curing oven tail gas environmental protection treating system is reasonable and compact in structure design, on-site space is effectively used, the system running performance is stable, maintenance is simple, smoke leakage can be effectively reduced, the on-site operation environment is improved,and safe, environmental protection and energy saving requirements can be effectively met.

Description

technical field [0001] The invention relates to the technical field of cold rolling machinery and equipment, in particular to an environmental protection treatment system for curing furnace tail gas. Background technique [0002] After the paint is painted on the board surface of the color coating unit, the strip steel enters the curing furnace and needs a circulating fan to blow hot air on the upper and lower boards to dry the paint. The hot air in the curing furnace contains volatile substances of the paint, which come out at the outlet of the curing furnace and meet cold air. The flue gas is formed and tar soot is formed. During this process, the main problems are as follows: 1. The company's existing color coating line, due to the serious smoke at the exit of the curing furnace, the flue gas with VOC escapes into the water quenching system. The cooling water in the water quenching box is seriously polluted and replaced frequently; 2. The flue gas from the strip steel sur...

AI Technical Summary

Problems solved by technology

[0002] After the paint is painted on the board surface of the color coating unit, the strip steel enters the curing furnace and needs a circulating fan to blow hot air on the upper and lower boards to dry the paint. The hot air in the curing furnace contains volatile substances of the paint, which come out at the outlet of the curing furnace and meet cold air. The flue gas is formed and tar soot is formed. During this process, the main problems are as follows: 1. The company's existing color coating line, due to the serious smoke at the exit of the curing furnace, the flue gas with VOC escapes into the water quenching system. The cooling water in the water quenching box is seriously polluted and replaced frequently; 2. The flue gas from the strip steel surface is brought into the water quenching tank along with the strip steel, and at the same time, VOC fume is mixed into the mist discharged from the water quenching system, resulting in the non-compliance of environmental protection standards; 3. The flue gas pipes are coked, and the high temperature is easy to spontaneously ignite, causing safety hazards; 4. The flue gas leakage affects environmental protection and employee health; 5. The flue gas leakage causes serious heat loss

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