A kind of stepped air bundle air distribution plate of circulating fluidized bed gasifier

Abstract

The invention provides a ladder-shaped wind beam wind-distribution plate of a circulating fluidized bed gasifier. A labyrinth of vent holes of the wind-distribution plate is set, and air outlet ends of the vent holes are converged to a same macropore channel; a column-shaped hole is formed in the upper part of the wind-distribution plate, and a hollow circular truncated cone which is smaller at the upper part and bigger at the lower part is arranged at the lower part of the wind-distribution plate; the upper edge of the circular truncated cone is connected with the edge of the lower end of an air-material mixture through hole; the circular truncated cone is set as a sealing cap; the bottom of the air-material mixture through hole is a plane and is set as a material blocking table; the plurality of vent holes are formed between a spherical crown arch face of the lower bottom surface of the wind-distribution plate and the air-material mixture through hole; the lower sections of the vent holes are arranged to be inclined upwards in a divergent way, the middle sections of the vent holes are vertically arranged, and the upper sections of the vent holes are horizontally arranged. The ladder-shaped wind beam wind-distribution plate has the advantages of being exquisite in design, long in service life and concentrated in airflow, having gradient change, being free from leakage of ash, and the like.

Description

technical field [0001] The invention relates to an air distribution plate of a circulating fluidized bed gasification furnace, in particular to an air distribution plate with beam-splitting input and cluster output with stepped wind speed, which belongs to a special component of coal gasification equipment. Background technique [0002] The air distribution plate is one of the important parts of the circulating fluidized bed gasifier. It is the bottom plate of the furnace of the gasifier. The upper part is the furnace, and the lower part is connected with the air chamber. The function of the air distribution plate is to support the material in the furnace of the gasifier, and at the same time, the gas or gas-material mixture in the lower air chamber passes through the entire area of ​​the air distribution plate and enters the furnace. People generally adopt a large number of wind caps on one side of the air outlet of the air distribution plate, so that the gas or gas materia...

AI Technical Summary

Problems solved by technology

At the same time, due to the unreasonable setting of the wind cap, the traditional air distribution plate still has serious dust leakage phenomenon, which causes the air chamber to be blocked.

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