Combined filter device

Abstract

The invention belongs to the field of environmental protection, and especially relates to a combined filter device. The combined filter device comprises an air inlet pipe, a filter, a connecting pipe and a chimney communicating in order, and dust filter layers is disposed in the filter. The dust filter layers comprises left supporting filter screens and right supporting filter screens, and the left supporting filter screens and the right supporting filter screens are distributed in alternate and interlaced manner from top down. The left supporting filter screens are disposed on the left inside wall of the filter, and the right supporting filter screens are disposed on the right inside wall of the filter. The filter sponges are disposed on the windward sides of the left supporting filter screens and the right supporting filter screens, and a spray cooling device is disposed on the outside wall of the connecting pipe. The combined filter device provided by the invention has simple manufacture and installation and small floor space, is economic and practical, is beneficial to dispose of poisonous gas and dust generated in the combustion process of the fire coal, can overcome the problem of exhaust gas pollution effectively, and can protect atmospheric environment.

Description

technical field The invention belongs to the field of environmental protection, in particular to a combined filter device. Background technique With the rapid development of science and technology, people pay more and more attention to the environment, and the environmental emission standards are becoming more and more stringent. A small number of places still use the method of burning coal to exchange for heat energy. The flue gas of coal combustion contains a large amount of acid gas (such as sulfur-containing gas), dust, heavy metals and other pollutants, so the flue gas needs to be purified and controlled. At present, the most widely used method in flue gas desulfurization is to absorb acid gas in flue gas through absorbent slurry. Due to the relatively high temperature of the flue gas itself generated by coal-fired combustion, and the relatively complex gas components in the flue gas, there are relatively high requirements for the temperature resistance and corrosion ...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a combined filter device, which overcomes the above-mentioned disadvantages. It is simple to manufacture and install, has a small footprint, is economical and practical, and is conducive to the disposal of toxic gases and dust produced in the coal combustion process, effectively effectively solve the problem of exhaust pollution and protect the atmospheric environment

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