Automatic cleaning control method and system for finned tube of convection section of olefin cracking furnace

CN122281663APending Publication Date: 2026-06-26QINGDAO CHANGLONG POWER EQUIP

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: QINGDAO CHANGLONG POWER EQUIP
Filing Date: 2026-04-16
Publication Date: 2026-06-26

AI Technical Summary

Technical Problem

The existing cleaning control methods for the finned tubes in the convection section of olefin cracking furnaces rely on indirect thermal parameters, which leads to insufficient or excessive cleaning intensity, and makes it impossible to accurately judge the scale removal status in real time, resulting in energy waste and equipment damage.

Method used

By acquiring the vibration signal generated by the impact of the cleaning medium on the surface of the finned tube, performing frequency domain analysis, extracting the high-frequency component distribution characteristic parameters, comparing the peeling judgment threshold in real time, and dynamically adjusting the cleaning intensity, precise closed-loop control is achieved.

Benefits of technology

It enables real-time and direct monitoring of the cleaning process, improving the accuracy of judgment and cleaning efficiency, saving energy, protecting equipment, and extending its service life.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN122281663A_ABST

Patent Text Reader

Abstract

This invention relates to the field of petrochemical equipment technology, and discloses an automatic cleaning control method and system for finned tubes in the convection section of an olefin cracking furnace. The method includes: controlling a cleaning mechanism to apply a cleaning medium to the surface of the finned tube at a preset first cleaning intensity; acquiring vibration signals generated by the cleaning medium impacting the finned tube surface; performing frequency domain analysis on the vibration signals to extract target feature parameters characterizing the distribution of high-frequency components; comparing the target feature parameters with a preset peeling judgment threshold to identify the scale peeling state on the finned tube surface; and adjusting the cleaning intensity from the first cleaning intensity to a second cleaning intensity when the scale layer is identified as peeled. This invention achieves accurate judgment of the scale peeling state of the finned tubes in the convection section of an olefin cracking furnace by introducing a real-time sensing and feedback control mechanism based on the frequency characteristics of vibration signals.

Need to check novelty before this filing date? Find Prior Art