Importance

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Abstract

The invention relates to an electrostatic precipitator for collecting liquid or solid particles from a gas stream. The electrostatic precipitator consists of a tube (1), through which the gas to be cleaned flows longitudinally, the internal wall (1A) of the tube forming a precipitating electrode for the particles to be collected. An internal electrode (2) extending in a lengthwise direction is disposed concentrically inside tube (1), a high electrical voltage being present in the space between this internal electrode and the precipitating electrode. On the inlet side, internal electrode (2) has a first section (2A) with a small cross-sectional area, and on the outlet side, a second section (2B) with a comparatively larger cross-sectional area. The function of the first section is essentially to form a corona while that of the second section is essentially to form an electrostatic collecting field. A cleaning body (3) is provided to clean the section of the internal electrode forming the corona, the cleaning body being moved relative to and in physical contact with the internal electrode so as to clean the section of the internal electrode forming the corona. The actuating element (4) effecting the relative movement is arranged in a space-saving manner inside the hollow internal electrode (2).

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First Claim