Reverse dust collector with eddy plate

Abstract

The invention provides a reverse rotation dedusting device, comprising a main unit. The main unit is a rectangle box. An ash hopper is arranged on the lower part of the main unit and comprises four inclined surfaces. The upper space of the main unit is divided into an air inlet chamber and a separation chamber through a baffle plate. The lower space of the main unit is provided with a plurality of vertical baffles basically along an inclined surface of the ash hoppers; a gas flow route is formed between all baffle plates and the inclined surfaces, in convenient for wide upstream side and a narrow downstream side. The baffle plate on the upstream side is long in the vertical direction; furthermore, the interval between all baffle plates has narrow upstream side and wide downstream side. The airflow in the gas flow route ascends along the baffle plate and is rectified on the upstream side through the baffle plate; the baffle plate is long in the vertical direction, so as to lead the airflow to be basically a lamellar flow and to flow into the separation chamber. The flowing speed of the airflow is restricted by flow resistance between the baffle plates, thus leading the flowing speed to be more uniform.

Description

technical field [0001] The present invention relates to a dedusting device for removing dust from gas discharged from a heat material cooler with a waste heat recovery system, eg in a cement plant. [0002] Although the present invention relates to a dedusting device generally used in an exhaust gas system of a cement plant, the present invention can be applied to exhaust gas systems of other factories such as steel mills, which are equipped to recover dust from the exhaust gas mixed with hard dust. Waste heat boiler. Background technique [0003] A schematic diagram of a cement plant is shown in Figure 1 and is generally known. In cement plants, research and dissemination of heat recovery technologies are promoted for energy conservation. An example of this is shown in FIG. 1 . [0004] In the cement plant shown in Fig. 1, the waste heat of the gas discharged from the preheater is recovered through a PH (preheater) boiler and discharged from the air quench cooler (AQC) Q...

AI Technical Summary

Problems solved by technology

However, in order to achieve the purpose, it is necessary to increase the dust removal accuracy in the case of different particle sizes (for example, 0.3mm or more), which wear and damage the boiler

On the other hand, when dust of medium particle size (for example, less than 0.3 mm) is completely removed and only fine dust remains, the adhesion and lamination of fine dust on the heat exchange surface of the boiler remarkably proceed, and thus it is found that the heat exchange efficiency is lower. fall early

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