Embedded type cylindrical blast cap

Abstract

The invention relates to an embedded type cylindrical blast cap, which belongs to the technical field of fluidized beds. The embedded type cylindrical blast cap comprises an embedded pipe and an outer sleeve pipe, wherein the embedded pipe is coaxially sleeved in the outer sleeve pipe, and a circular seam is limited between the embedded pipe and the outer sleeve pipe; the embedded pipe penetrates through and is fixedly connected in an air distribution plate, and through holes are arranged on the side wall of the outer sleeve pipe; the embedded pipe is a straight pipe section with uniform inner diameter, uniform wall thickness and two open ends, and the outer sleeve pipe is a blind pipe with a closed upper end; small holes are arranged on the circumference at the upper part of the pipe wall of the embedded pipe, and the circular surface at the top end of the embedded pipe is in close contact with the inner wall of the top surface of the outer sleeve pipe; and the lower part of the outer sleeve pipe is closely matched with the peripheral surface of the embedded pipe, and the bottom end of the outer sleeve pipe is buried in the refractory material of the air distribution plate. The embedded type cylindrical blast cap adopts the steel pipe, therefore, the manufacturing process is simplified, the manufacturing cost is saved, meanwhile, the embedded type cylindrical blast cap has the function of slag leakage prevention, the positioning of the outer sleeve pipe and the embedded pipe is accurate, the fixation is simple and convenient, the small holes on the side wall are not easy to be worn, and the cooling of the top surface is good; the embedded pipe is simple in structure and is free from the abrasion of the material in the furnace; and the resistance of the blast cap is free from the influence of the installation factor.

Description

field of invention [0001] The invention relates to an air cap used for a fluidized bed air distributor, in particular to an embedded cylindrical air cap used for a fluidized bed air distributor. Background technique [0002] Fluidized bed is a widely used industrial device mainly used for gas-solid reaction. It has a series of advantages such as simple structure, no moving parts, and uniform gas-solid mixing. One of the key components in its application is the air distribution plate, which is the bottom plate of the fluidized bed furnace, and its lower part is connected with the air chamber. The entire area of ​​the plate passes evenly, entering the furnace. The main performance of the air distribution plate is the uniformity of the air distribution, which is one of the keys to ensure the fluidization quality of the fluidized bed. In the past two decades, air distribution panels with hoods have been widely used. When the area of ​​the air distribution plate is designed to...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the bell-type hood outer tube and the embedded tube in the prior art that the connection method is not good and the manufacturing process of the embedded tube is complicated, and to provide an outer tube and the inner tube that are positioned accurately and the outer tube is fixed. Simple built-in cylindrical hood with simple built-in tube structure

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