Community Research and Development Information Service - CORDIS


A new design of cyclone preheater tower has been developed in order to increase efficiency and considerably reduce size. This reduces both the civil engineering costs and the environmental impact of very tall structures, often positioned on plant located in urban areas or National Parks. The cyclone preheater tower is based on the integration of recently developed cyclone dust separators into a heat exchanger capable of meeting the requirements of rotary cement kilns. These separators can be mounted either vertically or horizontally and have one or two material removal points. This consists of a circular pocket which slightly overlaps the main cyclone chamber and removes dust/particulate matter directly. These separators are about half the length of conventional units and by the use of two separation pockets remove more fine material. Horizontal units are especially attractive as they allow the system to be laid out at near ground level. The design of the interconnecting ductwork is crucial as this is where the gas/material transfer occurs. Care is needed to avoid material deposition and back flow of gas through the transfer duct.

Additional information

Authors: SYRED N, University of Wales, College of Cardiff (GB)
Bibliographic Reference: EUR 12592 EN (1990) 22 pp., MF, ECU 4, blow-up copy ECU 5
Availability: (2)
Record Number: 199010410 / Last updated on: 1994-12-01
Original language: en
Available languages: en