Instantaneous separation model of a square cyclone

This paper mainly studies the separation mechanism of a square cyclone at h igh inlet solid concentration. It is shown that the separation mechanism is very different from that at low inlet solid concentration. A phenomenon ca lled two-instantaneous separation exists, which has never been found in squ are cyclone experiments before. This phenomenon has bearing on the limit lo ad of gas-solid flow, and the part exceeding the limit load will be separat ed instantaneously after entering the square cyclone. A model called two-in stantaneous separation is introduced in this paper as well as the calculati ons of limit load and separation efficiency, which can be used in the desig n and research on a square cyclone for circulating fluidized bed boiler. (C ) 1999 Elsevier Science S.A. All rights reserved.