Cyclone separator having increased gas flow capacity

摘要

A cyclone separator adapted for attachment to the upper outlet end of a fluidized bed reactor such as an atmospheric (ACFB) or pressurized fluidized bed combustor (PFBC) has its gas flow capacity increased while maintaining high inlet gas flow velocity and particle separation efficiency. The cyclone inlet flow passageway has aspect ratio h/w increased to at least 4/1 and preferably to the range of 5/1 to 10/1. Also, the inlet passage inner wall is tapered or curved so that the inlet opening area exceeds that of the outlet opening adjacent the cyclone barrel. The cyclone outlet vortex tube lower portion has a truncated cone shape attached to a cylindrical-shaped vortex tube upper portion. The cyclone separator can be formed from multiple parallel tubes each having longitudinal fins for carrying a cooling fluid such as water or steam, and having a refractory material covering the tubes and fins.