Dust collector outlet concentration, mg/m3. (2) Total e […]
Dust collector outlet concentration, mg/m3.
(2) Total efficiency
In the dust removal system, if several dust collectors with dust removal efficiencies of η1, η2, ... ηn are operated in series. The total efficiency of the dust removal system is expressed by η, which is calculated as follows
η=(1- η1)(1- η2)...(1- ηn)
(3) Penetration rate The penetration rate ρ is the percentage of the discharge amount of the dust at the outlet of the de-energizer and the amount of the entrance dust, which is calculated by the following formula:
(4) Classification efficiency n The classification efficiency n is the dust removal efficiency of the dust in a certain particle size d or particle size range Δd of the dust collector, as shown in the following formula
2, pressure loss
The pressure loss of the precipitator is the difference between the absolute values of the total pressure of the airflow at the inlet and outlet of the precipitator, indicating the mechanical energy consumed by the gas flowing through the precipitator. When the local resistance coefficient of the precipitator is known to be depreciated, the following formula can be used. It can be directly measured at the site using a pressure gauge.
Where △p--------- pressure loss of the dust collector, Pa;
Ρu--------- treatment gas density, kg / m3;
υ --------- Airflow velocity at the entrance of the dust collector, m/s.
3. The amount of treated gas
Indicates the capacity of the precipitator to process gas, generally expressed as volume flow (m3/h or m3/s), and also expressed as mass flow (kg/h or kg/s).
4, load adaptability
A dust-removing device with good load adaptability can maintain stable dust removal efficiency, moderate pressure loss and high enough working efficiency when the treatment gas amount or pollutant concentration fluctuates within a large range.