High Strength Material for Hydrogen Service, an Experimental Investigation
Abstract
As an energy source, hydrogen has been a topic of discussion for some time. To support future energy demands, efficient means ofhydrogen compression will be required. Centrifugal compression may play a larger role in a market generally dominated by reciprocatingcompressors. However, centrifugal compression is highly dependent on gas molecular weight. Aerodynamic head is developed byincreasing the gas velocity to increase kinetic energy levels, then by converting the kinetic energy to potential energy through diffusion.The resulting impact is an increase in static gas pressure. The amount of kinetic energy imparted into the gas is a function of gas velocityand molar mass. To achieve high gas velocities, an increase in impeller rotational speed is required. This imparts higher stress oncentrifugal impellers, which can quickly exceed guidelines provided by American Petroleum Institute (API) Standard 617, eighth edition(2014). To utilize the benefits of higher rotational speed, new strength limits for the application of materials in hydrogen gascompression are required. In this work, the relative Hydrogen Induced Cracking (HIC) resistance of several common impeller alloyswas compared utilizing National Association of Corrosion Engineers (NACE) standard test method TM0177 as a guideline. The resultspresented here aimed to determine a test procedure and validate high-strength materials suitable for use in a hydrogen compressionenvironment. The chemistry, microstructure, mechanical properties, and heat treatments were examined to explain the results observedand to seek predictors for high-strength materials in hydrogen service.
Description
LectureCollections
Citation
Haarmann, Svenja; Mohr, Byron (2020). High Strength Material for Hydrogen Service, an Experimental Investigation. Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries. Available electronically from https : / /hdl .handle .net /1969 .1 /196832.