Main air distributor capable of realizing self-coordination of thermal expansion

Abstract

The invention provides a main air distributor capable of realizing self-coordination of thermal expansion. The main air distributor comprises an air inlet elbow, radial primary distribution pipes, circumferential secondary distribution pipes, a central supporting member, end supporting hinges, radial supporting beams and radial slide blocks, wherein the end supporting hinges are circumferentiallyarranged around a regenerator, and one ends of the end supporting hinges are fixed to the shell wall of the regenerator; the radial primary distribution pipes are arranged along the radial direction of the regenerator, and the bottoms of the radial primary distribution pipes are communicated with the air inlet elbow; one ends of the radial primary distribution pipes are inserted into the central supporting member; the radial supporting beams are arranged along the radial direction of the regenerator and configured to alternate with radial primary distribution pipes along the circumferential direction of the regenerator; two ends of the radial supporting beams are respectively hinged to the central supporting member and the end supporting hinges; the radial slide blocks are arranged on theradial supporting beams and slide along the radial supporting beam; the circumferential secondary distribution pipes are arranged along the circumferential direction of the regenerator, and two ends of the circumferential secondary distribution pipes are connected with the radial primary distribution pipes and the radial slide blocks; and the circumferential secondary distribution pipes and the radial primary distribution pipes are communicated with each other. The main air distributor of the invention releases thermal displacement, eliminates thermal stress and limits vibration by introducinga thermal expansion self-coordinating supporting structure.

Description

technical field [0001] The invention relates to the field of catalytic cracking regeneration equipment, in particular to a thermal expansion self-coordinating main air distributor for a regenerator. Background technique [0002] In order to meet the stringent environmental protection requirements and the increasing market demand for olefins, catalytic cracking (FCC) process technology is constantly being developed and improved. The regenerator is an important part of the catalytic cracking unit. The long-term stable operation of the main air distributor directly determines the regeneration effect of the catalyst, and even the processing capacity of the entire unit and the length of the operation period. A good regeneration effect can ensure the activity of the catalyst, increase the yield of light oil, and reduce the unit consumption of the catalyst. The regeneration process in the regenerator is a typical gas-solid coking reaction, and the regeneration temperature is about...

AI Technical Summary

Problems solved by technology

As the temperature rises, the components of the main air distributor will thermally expand, and when the thermal expansion and deformation cannot be coordinated, components such as the intake pipe and gas distribution pipe will generate great thermal stress, and since the main air distributor is located in the catalyst bed, The irregular agitation of the bed during scorching will cause the vibration of the main air distributor. If it is not restricted, it will lead to the destruction of the main air distributor, threaten the long-term operation of the device, force the device to stop, cause huge economic losses, and endanger the regenerator safe operation of

Images