Converting the Natural Gas Grid
Hydrogen injection: Converting pipedreams to reality
Hydrogen (H2) has the potential to play a key role in connecting different infrastructure layers in a low- or zero-carbon economy. Looking beyond its conventional applications as an industry feedstock in refining and fertilizer production, it is increasingly being heralded as a way to unlock the potential of renewable energy. In simple terms, surplus solar and wind energy can be converted to hydrogen and then to electricity on demand. Or it can be used to power zero-emissions fuel cell vehicles. The question is, how can hydrogen be efficiently delivered to the point of use in large quantities? To date, the market has been deterred by the high costs that would be involved in building a dedicated hydrogen pipeline or delivery infrastructure.
HISELECT® membranes separate a stream of hydrogen at a concentration of up to 90 percent.
The good news is that the infrastructure is already in place. With a few adjustments, H2 can be injected into existing natural gas pipelines and delivered to a wide range of end-point applications. The separation and purification technologies required downstream to extract hydrogen from the pipeline or natural gas blend are already available.
Proven PSA expertise
This delivery solution combines Linde’s market-leading pressure swing adsorption (PSA) technologies with a custom-designed membrane/permeation technology developed in collaboration with Evonik Industries. Made from hollow fiber, the HISELECT® membranes enable hydrogen to be extracted from natural gas blends at concentrations of up to 90%. Our proven PSA technologies then increase the purity to above 99.9999%. Having already engineered over 900 adsorption plants worldwide, including more than 500 H2 PSA plants, Linde builds on decades of experience in adsorption technologies to deliver the world’s highest capacities and on-stream availability levels.
This innovative, ready-to-use concept will be demonstrated at our Dormagen real-scale plant near Düsseldorf in Germany.
Highlights of PSA Combined With HISELECT® Powered by Evonik for Hydrogen
This innovative combination of technologies increases the reach and potential of hydrogen as a sustainable source of fuel and energy.
- Cost-effective, ready-to-run solution connecting to existing natural gas network
- Hydrogen purity rates in excess of 99.9999%
- High selectivity for cost-effective supply of hydrogen
- Robust performance under even the harshest conditions
- Excellent chemical resistance and high temperature tolerance