Method for determining catalyst pore defects

By mixing paraffin with the catalyst and then using X-ray computed tomography and image processing algorithms, the problem of not being able to observe the internal pores and particle adhesion of the catalyst in two-dimensional analysis was solved, enabling accurate determination of catalyst pore defects and improving detection efficiency and accuracy.

CN116952784BActive Publication Date: 2026-04-21PETROCHINA CO LTD
2 Cites 0 Cited by

Patent Information

Application Number
CN202310794828.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-30
Publication Date
2026-04-21
Estimated Expiration
2043-06-30

AI Technical Summary

Technical Problem

Existing two-dimensional image analysis methods cannot accurately observe the pores and defects inside catalyst particles, and the adhesion of catalyst particles to each other leads to problems of large computational load and inaccuracy.

Method used

Three-dimensional data of the catalyst were obtained by mixing paraffin with the catalyst and then using X-ray computed tomography. The image segmentation and porosity calculation were performed by combining morphological pore-filling algorithms and watershed algorithms, which solved the limitations of two-dimensional analysis and the errors caused by particle adhesion.

Benefits of technology

This technology enables accurate observation of the catalyst structure from a three-dimensional perspective, improving the accuracy and efficiency of pore defect detection and providing reliable data for catalyst manufacturing and evaluation.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a method for measuring catalyst pore defects, which comprises the following steps: mixing molten paraffin with a catalyst, stirring and ultrasonic dispersing simultaneously; rapidly cooling the mixture of the paraffin and the catalyst by using liquid nitrogen; analyzing the three-dimensional structure of the catalyst by using X-ray computed tomography; processing the three-dimensional scanning original data by using data processing software, and the program is sequentially median filtering, threshold segmentation, boundary particle removal, filling the catalyst image holes by using a morphological hole filling algorithm, particle marking and screening, taking an image difference set, and statistically calculating data, and finally obtaining the catalyst pore rate. Compared with the traditional measurement method, the method can more accurately observe the catalyst structure from the three-dimensional angle, and provides data for the manufacture and evaluation of the catalyst.
Need to check novelty before this filing date? Find Prior Art