The blast furnace gas dry pulse bag dust collector is the waste gas (260 ℃) from the waste gas supervisor, which enters the lower box of the bag dust collector through the branch pipe. After mechanical separation, the gas is filtered upward through the bag, and fine dust is attached to the filter bag. On the outer surface, the clean gas is collected into the upper box through a filter bag, passed through the clean gas branch pipe, and used in a hot blast stove when in charge. After filtering for a certain period of time, as the dust on the surface of the filter bag increases, the resistance of the dust collector rises. When the resistance rises to a certain value, the electrical control system sends a dust removal signal, the pneumatic branch valve and the upper ball valve of the outlet branch pipe are automatically closed, and the pulse valve Opening, the nitrogen of the sub-cylinder is sprayed from the mouth of the bag through the blowing pipe, and the filter bag is rapidly expanded.
The dust on the outer surface of the filter bag was shaken down and fell into the lower conical ash bucket. The last pulse valve was blown out, and the dust collector continued to remain stationary, so that the finer dust in the cylinder had a process of static sedimentation. This process At the end, the outlet branch pneumatic butterfly valve and upper ball valve are opened, and the dust collector enters the normal filtering state. At the same time, the lower ball valve is opened through the impeller feeder to complete the cleaning process of a box. During the above process, each valve is opened and closed. The test of the body's dust concentration is controlled by the PLC system. In this way, the waste gas is purified.