Cupola tail gas treatment system

Abstract

The invention relates to the field of environmental protection and particularly relates to a cupola tail gas treatment system. The cupola tail gas treatment system comprises a multi-pipe water cooler, a bag-type dust collector, a first combustion chamber and a heat exchanger which are sequentially connected in series, wherein the multi-pipe water cooler is used for reducing the temperature of cupola tail gas; the bag-type dust collector is used for filtering small dust in tail gas; the heat exchanger is used for heating the air entering the cupola by using the tail gas led out of the first combustion chamber; and the tail gas led out of the cupola sequentially goes through the multi-pipe water cooler, the bag-type dust collector, the first combustion chamber and the heat exchanger and is finally discharged out of a tail gas outlet of the heat exchanger. The transformation cost is low; the problems of reduction of heat exchange efficiency, increase of clearing cost and increase of shutdown maintenance time caused by a large quantity of dust in the tail gas entering the heat exchanger and adhered to the tube wall of the heat exchanger can be avoided, the production efficiency is improved, and the production cost is reduced; the sparks in the tail gas are effectively extinguished to prevent the sparks from entering the bag-type dust collector and burning out the bag; and moreover, natural gas consumption of the second combustion chamber of a curing furnace can be effectively reduced.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a treatment system for cupola tail gas. Background technique [0002] Such as figure 1 As shown, in the existing rock wool board production line, the exhaust gas treatment method of the cupola is generally that the exhaust gas containing a large amount of dust enters the first combustion chamber from the cupola to burn, burns the combustible gas in it, and then enters the heat exchanger for heating The air entering the cupola, then enters the multi-tube cooler to cool down, then enters the bag filter to filter out the dust, and finally passes through the induced draft fan, and the chimney is emptied. The problem in this case is that the exhaust gas containing a large amount of dust enters the heat exchanger and will adhere to the tube wall of the heat exchanger, which reduces the heat exchange efficiency and affects the heat exchange effect. One or two days after the fur...

AI Technical Summary

Problems solved by technology

The problem in this case is that the exhaust gas containing a large amount of dust enters the heat exchanger and will adhere to the tube wall of the heat exchanger, which reduces the heat exchange efficiency and affects the heat exchange effect

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