To solve the problem of collecting low-resistivity dust with ESP,a method is proposed to coat the ESP plate electrode surface with a special conductive compound so as to form a coating with a certain resistivity.

According to the characteristic of high resistivityo f fly ash in 3 # boiler,a retrofit on its electrostatic precipitator is carriedout.

The resistivity of high resistivity materials plates is far more than that of the metal plates.

Based on the study of metallic interconnect Fe-Cr-Mn alloy for solid oxide fuel cell(SOFC),some problems existing in the theoretical and experimental test of area specific resistance,and XRD analysis of oxide scale on the alloy surface are researched.

Principle and application of dust specific resistance determination with plate way;

By employing a self-developed directcurrent high voltage test system the current leakage and specific resistance of the fly ash of various kinds of coal being fired were measured and analyzed,and a series of volt-ampere characteristic curves obtained.

On a self-developed DR type high-pressure dust specific-resistance test rig,the specific resistance of fly ash of various particle diameters were determined.

The study indicated that rotating ESP is suitable for removing adhesive and/or high resistivity dust,and it can resolve the problem encountered in cleaning flue gas from activated lime kiln with routine methods.

But, so far the problem that the gas is contained high resistivity dust has not been solved commendably.

A moving electrode type electrostatic precipitator,here after will call it as MEEP, which is equipped with brushes to remove dust from the moving collecting plate surface,is effective in collecting high resistivity dust.