Session: MF-20-01 Material Quality and Failure Analysis - 1

Paper Number: 105977

105977 - Comprehensive Prediction for Temper Embrittlement of Hydrogenation Reactors in Long-Term Service Condition 

As critical pressure vessels equipment, hydrogenation reactors are widely used in the petrochemical industry and coal industry. The temper embrittlement, especially in long-term service condition, is the most important damage mode for hydrogenation reactors. Currently, the prediction of temper embrittlement in the standard of API 579 (American) and GB/T 30579 (China) is correlated with embrittlement sensitive X/J factor based on steeping-cooling experimental data. Obviously, service conditions including operation pressure, temperature and service time have significant effects on temper embrittlement, which should be further considered in the correlation. Besides, from the physical quantity dimension perspective, the dimension of current prediction correlation for temper embrittlement is inconsistent. Considering the dimensional features (internal diameter) and service condition (operation pressure, operation temperature, service time) of reactors, this study systematically collected the actual service data in the literatures to propose a comprehensive prediction correlation for temper embrittlement. The parameters related to temper embrittlement are further correlated with non-dimensional numbers to maintain the consistency of physical dimension. The proposed correlation is validated with engineering application case, and the results demonstrate that the prediction correlation agrees better with actual situation than previous correlation. This study will facilitate accurate prediction for temper embrittlement of hydrogenation reactors in long-term service condition.

Presenting Author: Juanbo Liu China Special Equipment Inspection and Research Institute

Presenting Author Biography: Juanbo Liu obtain his Ph.D degree with chemcial engineering from chinese academy of
sciences. Now, he worked in China Special Equipment Inspection and Research Institute and
mainy involed in the safety assessment of pressure vessel and risk intelligent prevention and
control.

Authors:

Juanbo Liu China Special Equipment Inspection and Research Institute
Zhiyuan Han China Special Equipment Inspection and Research Institute
Haoyuan Kang China Special Equipment Inspection and Research Institute
Sheng Chen China Special Equipment Inspection and Research Institute
Libin Song China Special Equipment Inspection and Research Institute
Meng He China Special Equipment Inspection and Research Institute