Trapezoidal distributing cylinder with strip-shaped net

Abstract

Disclosed is a trapezoidal distributing cylinder with a strip-shaped net, comprising trapezoidal support plates, a support plate connecting frame, an arc-shaped back shell plate and net strips. The plurality of trapezoidal support plates are equidistantly arranged inside the support plate connecting frame with equal distance and are welded on the support plate connecting frame, the plurality of net strips are arranged at a set distance and welded on the plurality of trapezoidal support plates arranged at an equal distance to form a strip-shaped net, and the arc-shaped back shell plate is fixedly connected to the support plate connecting frame. The distributing cylinder in the invention adopts a thickened arc-shaped back shell plate, which improves wear resistance and high temperature resistance of the back shell plate. The formed trapezoidal strip-shaped net with an arc surface has good shock resistance, good resistance to twisting and bending, and high tensile strength, and will not be deformed or cracked when temperature changes. Being axially arranged with uniform and vertical gap, the strip-shaped net will not produce a pressure drop, which reduces flow resistance of catalysts and reduces friction and collision applied to the catalysts. The distributing cylinder provided by the invention has a service life of more than 20 years.

Description

technical field [0001] The invention relates to a material distribution cylinder in a reforming reactor, in particular to a strip net trapezoidal distribution cylinder. Background technique [0002] In the past, the trapezoidal distribution tube of the domestic reforming reactor was completely made of 1.2-1.5 mm thick stainless steel plate cold-punched with a number of long through holes and stamped. 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 trapezoidal cylinder is subjected to high temperature, corrosion, stretching and other environments for thin plate...

AI Technical Summary

Problems solved by technology

[0002] In the past, the trapezoidal distribution tube of the domestic reforming reactor was completely made of 1.2-1.5 mm thick stainless steel plate cold-punched with a number of long through holes and stamped. 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 trapezoidal 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 shutdown for maintenance.

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