The cloth bag dust catcher processing volume calculation

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The cloth bag dust catcher processing volume calculation

Cloth bag dust remover has set the range of air volume, average filter when used in the design are not set in more than running under the condition of air volume range, set the airflow in the block, filter material filter pressure and the sharp rise in pressure loss, resulting in a decline in the efficiency of the precipitator. Lower than design air volume, to increase investment in equipment and area. Calculate a reasonable processing volume, for the stable operation of the dust collector and dust removal effect is of great significance.

The cloth bag dust catcher processing volume calculation

Of air units generally use the m3 / min or m3 / h, but must pay attention to the place and the flue gas temperature, moisture content in the high temperature gas is more, so the air is said by a wet air amount and moisture content expressed in volume fraction.

If have determined that the flue gas temperature gas cooled by taking dilution method, calculation of air time to consider increasing the dilution air quantity, to calculate the filter area needed for bag filter, the filtration velocity is actual filtration velocity. Design values should be in normal air volume increased by 5% - 10% of the insurance on the basis of the coefficient, in order to make sure the future process increase air volume adjustment, stable bag filter will be able to continue to use, but should pay attention to insurance coefficient cannot too much, otherwise will increase investment and operating costs.

Because the cloth bag dust collector, filter material, in the form of different types and features, filtering wind speed there is a big difference, of air once determined, can be determined according to the filtering speed to filter area.

Calculation of bag filter processing gas, gas to calculate operating conditions, namely the actual through gas data of bag dust removal equipment, should be according to the experience of the practical operation of existing plants or test data to determine, if the lack of necessary data, according to the production process (about 20% ~ 40%).

Its formula is: Q = Qs - 273 + (Tc) * 273 * (Pa) * (1 + K)

Type in the Q - through the precipitator dust gas volume m3 / h; Qs - the amount of gas production in the process of m3 / h. Tc - the temperature of the gas inside the filter ℃; Pa - environment atmosphere, kPa; K - filter, air leakage system before.

It should be noted that if the amount of gas production process was the working status of gas volume, compare selection requires the conversion of standard state.