Collection electrodes

Collection electrodes—type (either tube or plate), shape of plates, size, and mechanical strength—are then chosen. Plates are usually less than 9 m (30 ft) high for high-efficiency ESPs. For ESPs using wires, the spacing between collection plate electrodes usually ranges from 15 to 30 cm (6 to 12 in.). For ESPs using rigid-frame or rigid electrodes, the spacing is typically 30 to 38 cm (12 to 15 inches). Equal spacing must be maintained between plates throughout the entire precipitator. Stiffeners may be used to help prevent the plates from warping, particularly when hot-side precipitators are used.