Fluidized bed reaction tower

Abstract

The invention discloses a stable-flow-speed fluidized bed reaction tower. In the reaction tower, a fluidizing chamber (4) has an annular space opening or openings (6) uniformly distributed along a circumference, or an outlet is arranged over the bottom of the nozzle of the fluidizing chamber (4) for discharging return solid, aggregate or other solids. On the basis, the fluidizing chamber of the reaction tower (1) comprises a conical housing (3) capable of accommodating one conical insert (2). Thus, an annual space constituting the fluidizing chamber (4) is formed between the housing (3) and the insert (2), and an air flow which can be kept constant, increased or reduced according to the geometrical shape of the two components is generated. In the invention, a more stable operation environment is can be created, and particularly for process flow of a fluidized bed operates with different loads, the impact on the upstream and downstream systems of the reaction tower is reduced considerably.

Description

[0001] (This application is a divisional application of the Chinese invention patent application "Fluidized Bed Reaction Tower". The original application date is June 3, 2005, and the application number is 200510075709.9) Technical field [0002] The present invention relates to a fluidized bed reaction tower, in particular, a fluidized bed reaction tower in which aggregates and solids can be centrally discharged from a fluidized chamber, which has a fluidized chamber, a gas inlet and a gas outlet. If necessary, the gas inlet and gas outlet can be designed in multiple. Background technique [0003] During the operation of the reaction tower, a so-called fluidized bed is formed in the fluidized chamber. We can understand that it is a mixture of gas and solid matter in a turbulent state. Because the fluidized bed has turbulent flow, the solid matter, gas and water entering the fluidized bed mix very well with each other, so it is possible to produce the best mass transfer or adsorp...

AI Technical Summary

Problems solved by technology

The main disadvantage of the known fluidized bed reactor design is that variable gas flows (e.g. caused by upstream systems) often cause fluctuations in the fluidized bed, reducing the efficiency of the process and / or causing continuous disruption to the operation , such as running on the upstream system

And because the system connected with the reaction tower often requires the fluctuation of the flow rate between 30% and 100%, it will consume considerable energy and equipment costs to stabilize the process in the reaction tower (increase the gas flow rate to more than 60%)

Images