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“ We began developing our expertise in hydrogen in the 1970s , so hydrogen is nothing new for us .” workforce by 15 %, and put into operation a new machining centre .
Vast experience with hydrogen
PRUSS has a wealth of experience in the manufacture of hydrogen-service valves , with a track record spanning decades . “ We began developing our expertise in hydrogen in the 1970s , so hydrogen is nothing new for us ,” says Mr . Drehmel .
The thermodynamic , chemical , and physical properties of hydrogen place unique demands on process equipment , requiring special material and design solutions to ensure safe operation . “ While molecular hydrogen is relatively inert and therefore not corrosive , atomic hydrogen can cause cracking in certain metals , with highly stressed pressure-bearing components being particularly prone to hydrogen embrittlement , which is a risk that we take very seriously ,” explains Mr . Drehmel .
“ Another challenge is the size of hydrogen . As one of the smallest elements , it can diffuse through many materials considered air-tight or impermeable to other gases , which calls for special sealing solutions ,” continues Mr . Drehmel . “ To meet the demanding tightness requirements for hydrogen-service valves , we are able to use metallic seals for high-temperature applications , with our meticulous material selection process being supported by rigorous testing conducted inhouse and in accordance with a range of industryrecognised standards .”
Comprehensive solutions
The power generation industry is a vital market for PRUSS , with significant potential for growth . “ Wherever flow media such as oil , cooling water , steam , condensate , or gas must be controlled , shut off , secured or diverted , PRUSS can provide a solution – regardless of the application ,” says Mr . Drehmel . “ We manufacture valves in all sizes and various materials , designed for temperatures of up to 720 ° C and operating pressures of up to 600 bar . To make the package complete , we also manufacture the corresponding pneumatic , hydraulic , and electro-hydraulic actuators .”
Compared to other types of thermal power stations , gas-fired plants are characterised by relatively high efficiency , faster response time , lower capital costs , shorter construction times and lower carbon emissions . Another advantage is the fact that hydrogen could eventually replace natural gas as a fuel for combined-cycle gas turbines . While most existing gas-fired plants will require modest to moderate equipment modifications to run on a mixture of natural gas and hydrogen , a growing number of new plants are designed to be hydrogen-ready so that they can switch to the cleaner fuel as soon as the hydrogen supply , cost and pipeline infrastructure allow it .
First projects already underway
PRUSS has recently received multiple orders for valves and actuators from pioneering projects in Europe and Asia-Pacific that aim to generate power using hydrogen , either in its pure form or mixed with natural gas .
Hydrogen Tech World | Issue 9 | April 2023 11