Electrostatic precipitator

Claim 1

AN ELECTROSTATIC PRECIPITATOR COMPRISING A GAS SUPPLY CHANNEL FOR FLOW OF GAS TO BE CLEANED, A GAS DISCHARGE CHANNEL FOR FLOW OF CLEANED GAS, A CYLINDRICAL CASING BETWEEN SAID GAS SUPPLY AND GAS DISCHARGE CHANNELS THROUGH WHICH CASING THE GAS TO BE CLEANED PASSES IN AXIAL DIRECTION, AN INNER AND OUTER CYLINDRICAL SHELL FORMING AN ANNULAR SPACE WITHIN SAID CASING, A PLURALITY OF RADIALLY EXTENDING PARTITIONS, DIVIDING SAID ANNULAR SPACE INTO A SERIES OF SECTOR-LIKE COMPARTMENTS, ARRANGED SYMMETRICALLY ABOUT A COMMON AXIS, A SET OF ANODES AND CATHODES MOUNTED IN EACH OF SAID COMPARTMENTS IN FIXED SPACED RELATION TO ONE ANOTHER AND EXTENDING LENGTHWISE IN AXIAL DIRECTION THROUGH SAID COMPARTMENTS, SAID SET BEING ADAPTED TO BE SELECTIVELY CONNECTED AND DISCONNECTED TO A CURRENT SUPPLY SOURCE, RELATIVELY ROTATABLE MEANS INCLUDING STRUCTURE ROTATABLE ABOUT SAID AXIS FOR COMPLETELY ISOLATING PREDETERMINED ONES OF SAID COMPARTMENTS FROM SAID GAS SUPPLY AND GAS DISCHARGE CHANNELS INTERMITTENTLY WHILE PERMITTING GAS FLOW THROUGH THE REMAINING COMPARTMENTS, TWO MECHANICAL CLEANING DEVICES, ONE FOR THE ANODES AND ANOTHER FOR THE CATHODE IN EACH COMPARTMENT, THE SAID MECHANICAL CLEANING DEVICES IN A SAID ISOLATED COMPARTMENT BEING OPERATED SIMULTANEOUSLY TO REMOVE THE DEPOSITED DUST PARTICLES FROM THE SURFACES OF SAID ANODES AND CATHODES BY IMPARTING A PHYSICAL MOVEMENT THERETO, A DUST HOPPER LOCATED BELOW SAID CASING, MEANS BELOW THE CASING PROVIDING A ROTATABLE DUST DISCHARGE DUCT ROTATABLE SYNCHRONOUSLY WITH SAID ROTATABLE ISOLATING MEANS TO COMMUNICATE WITH SAID ISOLATED COMPARTMENT FOR CONDUCTING PRECIPITATED MATERIAL DISLODGED BY SAID CLEANING DEVICES TO SAID DUST HOPPER, A SECONDARY DUST SEPARATING DEVICE, A FAN, AND MEANS OPERATIVELY CONNECTING THE SAID FAN TO SAID SECONDARY DUST SEPARATING DEVICE TO CAUSE GAS TO FLOW THERETHROUGH, THE SAID SECONDARY DUST SEPARATING DEVICE HAVING GAS INLET MEANS AND GAS OUTLET MEANS, MEANS CONNECTING THE SAID GAS INLET MEANS TO THE DUST HOPPER, AND MEANS CONNECTING THE SAID GAS OUTLET MEANS TO THE SAID GAS SUPPLY CHANNEL, WHEREBY THE SMALL QUANTITY OF GAS DRAWN BY THE FAN FROM THE GAS DISCHARGE CHANNEL THROUGH THE SAID ISOLATED COMPARTMENTS AND ROTATABLE DUST DISCHARGE DUCT ENTRAINS REMAINING DUST AND CARRIES SAID DUST TO SAID SECONDARY DUST SEPARATING DEVICE FOR REMOVAL, WHEREAFTER THE DUST FREE GAS REINTRODUCED INTO THE SAID GAS SUPPLY CHANNEL.