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There is a big pressure difference between the inside and outside of the precipitator, and the leakage of flange or welding joint will occur in long-term operation

Article source: this site Author: admin popularity: second Time: 19:20, June 11, 2020【 large in Small
     a duster The settlement cover and baffle are worn or cracked. In order to avoid direct air impact on the filter bag a duster In planning, settlement cover is usually provided, and large a duster Generally at that time equipped with baffle, planning extended a duster The use range of life.

Bag filters are often damaged. Under severe circumstances, the dust emission from the fan outlet exceeded 80% in less than half a month g/N 3, and gradually add, so it is necessary to replace the filter bag. At first, the quality of the filter bags was questioned. After careful inspection of the filter covers, the filter covers are no longer in severe conflict with each other during the recovery process, resulting in frequent air impingement. Bagging and chimney emissions at fan outlet remain at 20 g/N Below 3. The characteristics of the broken bag are: the filter bag far away from the air inlet is broken first, and the bottom is broken, and obvious wear marks can be seen. The emission concentration from the chimney at the fan outlet is gradually added, and the chamber used for the settling cover has a significantly higher emission concentration than other chambers during operation.

The cabinet leaks. because a duster Therefore, there will be a large pressure difference between the flange and the flange during operation. Now, a duster The air flow inside will be chaotic, especially at the point of leakage. They may conflict with each other or mix with the shell. Our company has one a duster , often broken by several bags on one side of a room. It was broken less than three days after the replacement. The emission concentration of the chimney at the outlet of the electric fan is as high as 55 g/N 3。

The reason was not detected after multiple aborts. Air leakage is heard after operation. After careful observation, the weld cracked and was in the position of frequent bag breaking. After treatment, the problem of often broken bags was dealt with. Discharge remains at 18 g/N Below 3 (when the machine stops, the inspection is not detected, which is mainly because when the pressure difference in the gauge is the same, the weld cracks merge actively, and the pressure difference in the gauge becomes larger when the normal operation is completed). The characteristics of the broken bag are: the position of the broken bag is fixed and there are obvious wear marks. From the point of view of the emission concentration of the chimney at the outlet of the electric fan, although the emission concentration exceeds the standard, the phenomenon of continuous addition does not appear after reaching the corresponding concentration. Perhaps the increase is small, and the high point of discharge concentration is also reflected in each room.