Method for preventing harp-type converter lower gas collection branch tube from thermal deformation

Abstract

The invention relates to a method for preventing a harp-type converter lower gas collection branch tube from thermal deformation. The method is characterized by comprising the following steps of: respectively sleeving heat radiation sleeves on harp connecting tubes of a converter, wherein the heat radiation sleeves comprise heat radiation rings which are sleeved close to the outer walls of the harp connecting tubes and a plurality of convex heat radiation fins which are arranged along the length directions of the outer side walls of the heat radiation rings, the heat radiation fins are arranged in a radial pattern relative to the heat radiation ring at intervals, and moreover the lower ends of the heat radiation rings are adhered to the lower gas collection branch tube. Compared with the prior art, the method solves the problems of thermal deformation factors of the lower gas collection branch tube and partial high temperature of the lower gas collection branch tube, and the temperature of the lower gas collection branch tube trends to be uniform, so that the problem of vertical thermal deformation in the operation of the harp-type converter lower gas collection branch tube is solved from the source, and meanwhile the material temperature of a high-temperature area is decreased, the allowable stress of the material is increased, and the security of a device is improved.

Description

technical field [0001] The invention relates to a hydrocarbon steam reformer in a petrochemical plant, in particular to a method for avoiding thermal deformation of a lower gas-collecting branch pipe of a harp-type reformer. Background technique [0002] The existing hydrocarbon steam reformer is one of the most important equipment in petrochemical plants such as synthetic ammonia, methanol, and hydrogen production, and the reformer piping system is the key part of the entire reformer, including the upper distribution pipe, Reformer tubes, lower header and lower header. There are usually two ways to connect the reformer tube and the lower gas collecting pipe: the harp type, that is, the direct plug-in type, and the pigtail pipe type with the bottom. These two methods have their own advantages and disadvantages, and many sets of devices are used at home and abroad. Among them, the harp type has the advantages of simple structure, small investment, and low energy consumption...

AI Technical Summary

Problems solved by technology

This technical solution eliminates the thermal deformation of the lower gas-collecting branch pipe of the harp-type reformer by introducing elastic stoppers. Although it eliminates the thermal deformation of the lower gas-collecting branch pipe, it cannot solve the problem of local high temperature in the lower gas-collecting branch pipe, that is, it does not eliminate The cause of the thermal deformation of the lower gas collecting branch pipe, and the interaction of the two forces, resulting in a further increase in the stress in this area, which will lead to the rupture of the lower gas collecting pipe and shorten the service life of the lower gas collecting pipe

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