Journal of Liaoning Petrochemical University
  Journals
  Publication Years
  Keywords
Search within results Open Search
Please wait a minute...
For Selected: Toggle Thumbnails
Influence of Internal Structure of Metal Hydride Reactor on Hydrogen Storage Performance
Dingjian LI, Chunzhi LIU, Liqian ZHAO, Xuewu LIU
Abstract86)   HTML13)    PDF (3762KB)(65)      

Establish a metal hydride reactor and test platform, and obtain the corresponding internal temperature and hydrogen absorption/desorption flow data of the reactor under different water bath temperatures, hydrogen release flow rates, and reactor structures (square, honeycomb, and no barriers) through experimental tests to determine The temperature field distribution trends and rules of different reactor internal structures are analyzed. The results show that the square structure reactor has the fastest internal temperature change rate and the best heat exchange effect. The comprehensive performance of the square structure reactor under different hydrogen absorption pressures and hydrogen release flow rates was further studied. The results show that when the inlet pressure is 2.0 MPa to 3.0 MPa, the hydrogen absorption amount and hydrogen absorption rate of the alloy material can be significantly increased; when the hydrogen release flow rate is less than 3.2 L/min, more than 85% of hydrogen can be released. The research results can provide technical guidance for modular and systematic design.

2023, 43 (6): 37-43. DOI: 10.12422/j.issn.1672-6952.2023.06.006
Crack Failure Analysis of Torch Burner Pipeline in Petrochemical
Zhiwei Zhao, Wenquan Jiang, Junfeng Guo, Yanhai An, Zhi Li, Yao Zhang
Abstract251)   HTML2)    PDF (3107KB)(162)      

The failure mechanism of pipeline cracking area of ground flare burner was studied. Through the combination of low?power macro analysis, material analysis, microscopic metallographic analysis, scanning electron microscope (SEM) micro morphology and energy spectrum analysis (EDS) and experiment, the causes of pipeline failure and cracking were found out. The sensitive environment (medium), the influence of sensitive materials and stress conditions on pipeline cracking failure were further analyzed. The results show that at a certain temperature, an acidic corrosion environment of H2S+CO2+H2O is formed in the pipeline, and the stainless steel material of the flare burner pipeline is seriously sensitized and has serious intergranular corrosion; Intergranular corrosion causes grain spalling on the surface of pipe wall, resulting in pitting pits, which become the crack source of stress corrosion cracks; The flare burner pipeline will produce a certain degree of stress concentration in the process of manufacturing, processing and device operation. Under the condition of corrosive medium, sensitive material and stress concentration, the flare burner pipeline will fail due to intergranular stress corrosion cracking.

2022, 42 (5): 80-83. DOI: 10.3969/j.issn.1672-6952.2022.05.012