Cone gas distributor for fluidized bed

Abstract

The invention relates to a gas distributing device for a fluidized bed, which is arranged in a gas gathering chamber 4. The gas distributing device comprises an upper cone, a lower cone and a bracket, wherein the bracket is inversely provided with the lower cone; the lower cone is provided with the upper cone; the bottom surface of the upper cone is opposite to that of the lower cone; and the upper cone and the lower cone have the same bottom diameter, and the bottom diameter is less than the inner diameter of the gas gathering chamber. The bottom angle a of the upper cone is between 30 and 55 DEG; the bottom angle of the lower cone is between 28 and 48 DEG; and the bottom radius of the upper cone and the lower cone is 2 to 20 mm less than the inner diameter of the gas gathering chamber. The cone gas distributing device has good gas distributing effect and effectively improves the gas distributing evenness; the cone surface has the advantages of smoothness, no gas channel, small pressure drop, abrasion resistance and difficult deformation at a high temperature; an annular gap can effectively prevent impurities carried by a raw material from blocking the gas distributing device so as to conveniently carry out replacement or maintenance.

Description

Technical field: [0001] The invention relates to a fluidized bed reaction device, in particular to a gas distributor for a fluidized bed suitable for gas-solid reaction. Background technique: [0002] With the increasingly prominent energy and environmental problems, biomass energy technology has developed rapidly in recent years, and its application has become more and more extensive. Biomass gasification technology is one of the important means of biomass energy utilization. The fluidized bed used in it The gasifier is a traditional industrial device, but due to the different fuels (raw materials) used, the requirements for the specific internal components of the equipment are also different. The gas distribution plate of the traditional fluidized bed gasifier usually adopts the gas distribution plate, and now there are mainly sieve plate, hemispherical sieve plate, conical sieve plate and similar sieve plate structure, often because the biomass fine particle raw material ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing problems of the sieve plate gas distributor in the prior art, such as large pressure drop, easy blockage by impurities, inconvenient repair and maintenance, etc., the invention proposes a conical gas distributor for a fluidized bed, which can effectively reduce pressure Reduce energy consumption; effectively avoid the problem of impurity clogging in traditional perforated plate gas distributors

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