Cottrell precipitator


Also found in: Dictionary, Thesaurus, Wikipedia.

Cottrell precipitator

[′kä·trəl prə′sip·ə‚tād·ər]
(engineering)
A machine for removing dusts and mists from gases, in which the gas passes through a grounded pipe with a fine axial wire at a high negative voltage, and particles are ionized by the corona discharge of the wire and migrate to the pipe.