Cambered-surface sector-shaped cylinder with strip-shaped net

Abstract

Disclosed is a cambered-surface sector-shaped cylinder with a strip-shaped net, comprising a plurality of sector-shaped supporting rings, a supporting ring connecting frame, an arc-shaped back housing plate, and net strips, wherein the plurality of sector-shaped supporting rings are equidistantly arranged inside the supporting ring connecting frame uniformly and welded on the supporting ring connecting frame, the plurality of net strips are arranged at set intervals and welded on the equidistantly arranged sector-shaped supporting rings to form a cambered-surface sector-shaped strip-shaped net, and the arc-shaped back housing plate is fixedly connected with the supporting ring connecting frame. According to the invention, as the arc-shaped back housing plate is adopted and thickened, the wear resistance and the high temperature resistance of a back plate is improved. The formed cambered-surface sector-shaped strip-shaped net has a good impact resistance, a good distortion resistance, a good bending resistance and a good tensile resistance and has no deformation, cracking or the like when the temperature is changed. In addition, the strip-shaped net is axially arranged and gaps are uniform and vertical, so the pressure drop is avoided, the flow resistance of a catalyst is reduced and the friction and the collision to the catalyst are reduced. The service life of the cambered-surface sector-shaped cylinder with a strip-shaped net of the invention is more than 20 years.

Description

technical field [0001] The invention relates to a material distribution cylinder in a reforming reactor, in particular to a fan-shaped distribution cylinder with a strip-shaped mesh arc surface. Background technique [0002] In the past, the fan-shaped distribution cylinder of the domestic reforming reactor was completely formed by cold-punching a number of long through-holes on a stainless steel plate with a thickness of 1.2-1.5 mm and then stamping it. The thin plate has poor impact resistance and pressure resistance, and is prone to deformation and bending defects. There are burrs on the edge of the punched through hole, and its stretching makes the surface uneven and deformed. The through hole is a long hole arranged horizontally, which has friction and collision with the fluidized bed catalyst, resulting in an increase in the breakage rate of the catalyst and increasing the replenishment of the catalyst. . The fan-shaped cylinder is subjected to high temperature, corro...

AI Technical Summary

Problems solved by technology

[0002] In the past, the fan-shaped distribution cylinder of the domestic reforming reactor was completely formed by cold-punching a number of long through-holes on a stainless steel plate with a thickness of 1.2-1.5 mm and then stamping it. The thin plate has poor impact resistance and pressure resistance, and is prone to deformation and bending defects. There are burrs on the edge of the punched through hole, and its stretching makes the surface uneven and deformed. The through hole is a long hole arranged horizontally, which has friction and collision with the fluidized bed catalyst, resulting in an increase in the breakage rate of the catalyst and increasing the replenishment of the catalyst.

The fan-shaped cylinder is used for thin plate processing. It is exposed to high temperature, corrosion, stretching and other environments all the year round, and a large number of dents and deformations occur. The service life is short. Under normal process conditions, it can last up to 6 years, which increases the probability of shutting down for maintenance.

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