A self-supporting structure of tube bundles in a rotary multi-heating tube pyrolysis kiln

Abstract

The invention discloses a self-support structure for a rotary type pyrogenation kiln with multiple heating tubes. The self-support structure comprises a plurality of support components, wherein the support components are arranged in a barrel in the length direction and at intervals of preset distance; each support component comprises three to eight fan-shaped support plates used for supporting heating tube bundles which are uniformly distributed on the same section, and annular tubes for supporting the heating tube bundles are welded on the fan-shaped support plates; the inner ends of the fan-shaped support plates on the same section are rigidly connected together through connecting rods; thus, the stable self-support structure is formed. According to the self-support structure, a heating tube support frame does not need to be welded with the barrel together, so that the forced condition of the barrel is greatly improved, the operation safety of equipment is improved, the thickness of the barrel is facilitated to be reduced, the weight is reduced, and the cost is reduced. In addition, the self-support structure is easy to mount and convenient to adjust.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a self-supporting structure of a rotary multi-heating tube pyrolysis kiln tube bundle. [0002] technical background [0003] At present, the rotary tube dryers and rotary tube pyrolysis kilns that are widely used at home and abroad both use multiple sets of heating tube bundles. Generally speaking, the diameter of the heating pipe is φ30~φ300mm, the longest length can reach 60m, and multiple groups of tube bundles are evenly distributed in the rotating cylinder. In order to avoid bending and deformation of the heating pipe along the length direction, a certain amount of supports should be arranged along the length direction. The current common support method is mostly to use supports to form tube bundles of 4 to 20 pipes and fix them in groups. The supports are welded to the inner wall of the cylinder or connected to the inner wall with bolts. There are u...

AI Technical Summary

Problems solved by technology

But its disadvantage is that it needs to be welded on the inner wall of the tube, there are many welding points, the construction is inconvenient, and the thermal deformation of the support and the inner wall of the cylinder is different, so the cylinder will produce local shrinkage, that is, there will be a large amount of thermal stress

For a pyrolysis kiln with a double-layer thin-walled inner cylinder, such a fixing method is likely to cause a large force on the inner cylinder, which is prone to large deformation and cracking damage

In addition, due to the fixed connection, it is not easy to move and adjust

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