How is LNG dehydrogenated? Which dehydrogenation catalyst should be chosen?
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Natural gas from the pipeline network is liquefied, and after processes such as CO2 removal, water removal, mercury removal, and helium removal, hydrogen is still present in the natural gas. Currently, to remove H2 from natural gas, catalysts are used to separate the hydrogen contained in methane. Dear experts, 1. What type of dehydrogenation process should be chosen? 2. What type of dehydrogenation catalyst should be chosen? 3. Which manufacturers produce such dehydrogenation catalysts? Thank you all for your guidance
Dehydrogenation is the process of separating hydrogen from methane, and common dehydrogenation methods include thermal dehydrogenation, catalytic dehydrogenation, and plasma dehydrogenation. 1. When selecting an appropriate dehydrogenation process, the economic viability, safety, and efficiency of the process must be taken into consideration. Catalytic dehydrogenation is one of the most commonly used dehydrogenation processes today, as it features high selectivity and low operating temperatures. However, correspondingly, catalytic dehydrogenation involves issues such as catalyst selection and regeneration. 2. When selecting a dehydrogenation catalyst, factors such as its reactivity, selectivity, and stability toward methane and hydrogen need to be considered. Commonly used catalysts include precious metals (such as platinum and palladium), transition metals (such as nickel and iron), and composite oxides. The performance of different catalysts varies in practical applications, and selection must be based on specific circumstances. 3. Currently, there are many catalyst manufacturers in the market that supply dehydrogenation catalysts, such as Albemarle, Baker Hughes, Sasol, etc. These manufacturers offer catalysts of different types and specifications, which can be selected based on specific requirements. When selecting a catalyst, it is recommended to contact the manufacturer for more detailed information. It should be noted that the above is only for reference; the specific choice must be determined by taking into account factors such as process conditions, cost-effectiveness, and actual requirements. .
Are there any recommended literature materials on catalytic dehydrogenation? I searched for a long time but couldn’t find it; thank you
Is the amount of hydrogen large or negligible? If the quantity of hydrogen is substantial, can’t it be separated using PSA?
Thanks for sharing:victory:
Liquefaction and separation take place in the cryogenic tank; methane is liquefied, while the hydrogen present can be reheated and sent back out of the cryogenic tank for recovery – isn’t that more economical?