Air Pollution Control Equipment Selection Guide, 3rd Edition

4

Dry Cyclone Collectors*

4.1 Device Type

Dry, cyclonic separators disengage entrained dust from a carrying gas stream. They are often called cyclone collectors, multicyclones, cyclones, cyclonic separators, or cyclonic dust collectors.

4.2 Typical Applications and Uses

Cyclone collectors are used for product recovery of dry dusts and powders and as primary collectors on high-dust loading (more than 2–5 grs/dscf, or grains per dry standard cubic foot) air pollution control applications.

A common application is the rotary dryer. Used to dehydrate various products from grain to manure, direct- or indirect-fired rotary dryers often use cyclone collectors to capture the entrained dust prior to a secondary collector (such as a Venturi ...