Flue gas integral dry waste removing system and flue gas waste removing and back washing method

Abstract

The invention provides a flue gas integral dry waste removing system which comprises two reaction towers, wherein a flue gas passes through one of the reaction towers to enter the reaction tower from bottom to top for movement and passes through a three-granular layer fixed bed positioned in the reaction tower for a physical reaction to remove a harmful gas; the granular layer fixed bed positioned in the other reaction tower is subjected to back washing from top to bottom through an injection device so that the resistance of the granular layer fixed bed is reduced, a dusty gas enters a bag type dust collector to be filtered and then can be directly discharged into atmosphere, in such a way, the two reaction towers alternately carry out the processes of waste removal and the back washing, so that the efficiency is greatly improved, and the full-automatic continuous operation can be realized.

Description

technical field [0001] The invention relates to a waste gas removal device, in particular to a flue gas integrated dry waste removal system, and also relates to a flue gas removal and backwashing method. Background technique [0002] With the development of social economy, the industrial development is becoming more and more rapid, but there is also a lot of dust brought in by industrial production. These dusts mainly exist in the gas, so it is necessary to install corresponding dust removal devices. The particle bed filter dust removal device has unique advantages in the field of high temperature gas dust removal because it can use high temperature resistant filter materials, such as quartz sand. However, the traditional particle bed filter and dust removal device is often inaccurate in the selection of particle types and sizes, and inappropriate flushing devices lead to poor cleaning effect, which affects work efficiency. The utility model patent specification with the pa...

AI Technical Summary

Problems solved by technology

However, the traditional particle bed filter and dust removal device is often inaccurate in the selection of particle types and sizes, and inappropriate flushing devices lead to poor cleaning effect, which affects work efficiency.

The utility model patent specification with the patent No. ZL88201515.X discloses an electric particle layer dedusting device for boilers burning low-quality coal. The device is composed of the traditional rake and the transmission mechanism, and the structure is relatively simple. The plate is heated unevenly and easily deformed to cause material leakage and air leakage. It cannot be applied to occasions with high temperature or large temperature fluctuations.

In addition, the existing dust removal and waste removal devices often cannot realize the two operations of waste removal and cleaning in the same device at the same time, which greatly reduces the speed and efficiency of flue gas treatment, and at the same time increases manpower and operating costs

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