[ cover story ]
Renewable power generation
Wind , solar
Hydro , tide
Geothermal
Biomass / Waste-to-energy
Nuclear
Power
Green hydrogen production
LP – Electrolysis ( AWE , PEM )
HT – Electrolysis ( SOEC )
Syngas H 2 + CO
CCS
Blue H 2
N 2
ASU
Storage and transportation of hydrogen by ship , train , truck , pipeline
Compression station
Liquification plant
Hydrogenation plant
Synthesis plant
Overcoming hydrogen challenges
Green hydrogen utilization
Natural gas grid enrichment Residential / building heating
Industry Hydrocarbons , ammonia , methanol , application in steel industry , etc .
Power generation Gas turbines , fuel cells , combustion engines
Successfully engineering and manufacturing valves for use with gaseous hydrogen requires vast expertise . Mr Pischke lifts the lid on just a few areas that demand attention . “ Although hydrogen is not toxic , controlling fugitive emissions is obviously very important given the potential for fire hazard . Hence proper selection of packings and seals is a must . Further , molecular hydrogen can , under certain conditions , dissociate on metallic surfaces and enter the lattice of the material as atomic hydrogen . The possibility for hydrogen embrittlement therefore needs to be considered during materials selection . Additionally , non-metallic materials can experience dimensional changes upon rapid decompression within gaseous service lines .”
For ease of transportation and storage , hydrogen can be liquefied to reduce its volume . Liquid hydrogen ( LH 2 for short ) service requires very low temperatures . Although hydrogen embrittlement is not frequently observed , LH 2 can present other challenges . For example , certain non-metallic as well as metallic materials can become very brittle . In addition , dimensional changes that occur in changing temperature from ambient to the service condition can impact internal tightness as well as external sealing points . All these points and more are factored into the design of Valmet ’ s valves , states Mr Kähkönen . “ Our standing as a premium source of valves is based on our knowledge-based engineering
GH2↓
LH2
LOHC
MeOH , NH 3
Supporting the carbon-neutral value chain : Valmet offers a wide range of valve solutions for P2X hydrogen applications , from green electrolysis to blue carbon capture , covering the entire journey in between and beyond .
CCS
Blue H 2
eFuel and manufacturing . We have successfully delivered thousands of valves for hydrogen use since the 1970s , but perhaps more important is that our flow control and automation solutions are designed to be future proof . The products are optimized for the requirements of energy transition technologies such as electrolysis , absorption and adsorption as well as the further use of hydrogen , oxygen and carbon dioxide for the production of e . g ., eFuels , ammonia or methanol . Customers can therefore have every confidence that our valves will be safe and effective choices for their hydrogen services .”
Valmet : flow control and automation offerings
PRODUCTS
• Rotary valves
• Linear valves
• On / off valves
• Control valves
• Actuators – pneumatic , rack & pinion
• Actuators – pneumatic , spring-diaphragm
• Actuators – electric
• Actuators – manual
• Intelligent valve controllers
• Positioners
BRANDS :
• Neles™
• Jamesbury™
• Flowrox™
• Neles Easyflow™
• Stonel™
• Valvcon™
VALVE SOFTWARE
• Nelprof valve sizing and selection software
AUTOMATION SOLUTIONS
• Process Controls
• Compressor Controls
• Advanced Process Controls
• Safety Systems
• PlantTriage
• Energy Management System
• Training Simulators
• Data Management
Hydrogen Tech World | Issue 15 | April 2024 11