1: The average speed of the flue gas before entering the bag dust collector X the cross-sectional area of the dust collector inlet. It should be noted that the unit should be unified, generally cubic meters/hour.
2: If it is calculated by the reconstruction engineering department according to the air volume of the induced draft fan behind, the actual air volume of the induced draft fan X95% is the approximate processing air volume of the bag dust collector.
3: The design of general bag dust collector air volume is determined according to the actual working condition.
Determining factors of air volume of bag dust collector:
In general, dust removal, air volume is one of the first conditions to determine, such as boiler dust removal, air volume can be determined according to the number of tons of boiler combustion. Generally, the selection of dust collector air volume depends on experience or previous equipment. For example, in the same condition, the air volume should be estimated according to experience. If there is such equipment before, the larger or smaller equipment should be selected according to the treatment effect. Then is the wind speed, according to the material to be filtered to select, generally than significant, such as casting, steel grinding, dust weight is heavier, available 1.4-1.7m/min wind speed, relative chemical materials and other lighter, to select lower wind speed, so that the filtration area can be calculated. The air volume and pressure of the dust collector are generally matched with the fan after the dust collector.
The calculation of the air volume of copper melting furnace can be estimated according to the average wind speed at the hood or inside the hood, or through the heat source radiation. The latter is more complicated, and in practice, it mainly relies on experience to estimate. Taking an intermediate frequency furnace with a diameter of 800 as an example, if the semi-closed mobile smoke hood is used, the wind speed in the hood can be put to 1M to 1.5M, and the air volume of a single furnace can be about 5000. At the same time according to the different process, considering the system air leakage. The core of copper furnace dust removal lies in several points: air volume calculation should be accurate, Mars and flue gas temperature treatment should be appropriate. There is also the problem of preventing sticky bags.
When the dust bag is selected according to the air volume, it is generally not possible to make the dust collector run in excess of the specified air volume, otherwise the dust bag is easy to block, the life span is shortened, the pressure loss is greatly increased and or, and the dust removal efficiency should be reduced. But also can not choose too much air volume, otherwise increase equipment investment and occupy an area, more can not do energy saving and environmental protection, reasonable choice of air volume is often selected according to the process and calculation.
More product knowledge about dust collector bag can contact 13396910416 (wechat the same number)