RU92007122A - ELECTROSTATIC METHOD FOR ISOLATION OF FRACTIONS OF PARTICLES FROM GAS FLOW - Google Patents

Claims (1)

The electrostatic method of separating fractions of particles from a gas stream relates to a technique for collecting dust by electroplating particles from the gas phase. To increase the separation efficiency by fractions of particles suspended in the gas stream when passing through a multi-field electrostatic precipitator, the gas flow rate in the near-electrode region is reduced from the field to the field, and the voltage on the electrodes is supplied with a uniform increase in its value from the minimum allowable U _{m and n} in the first field to the maximum permissible U _{m and k s} in the latter, and

where k is the number of electric fields, while the gas flow velocity near the precipitation electrode in each of the fields V _n is determined from the relationship:

where V _k is the gas flow velocity in the last kth field; determine from the condition of maximum trapping fractions of particles with an average size (radius) r _k ;

- the average particle size of the n-th fraction trapped in the n-th field;
U _n - the voltage on the electrodes in the n-th field; U _k = U _{m a c with} - voltage on the electrodes in the last k-th field;
n = 1,2 ... m ... k is the ordinal number of the field under consideration, the fraction number of particles with an average size

.