【Q&A Question 020】2018.01.20
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【Q&A Question 020】January 20, 2018: Why is desulfurization necessary for hydrogen production raw materials? Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, with particularly severe effects on conversion catalysts and methanation catalysts. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limitations on the number of posts in the “One Question per Day” section, “One Image per Day” has been moved to the registered devices section; you can access it through the directory I posted. For management purposes, if you need to view content from a few days ago, please access it through the summary post below. 2018 Chemical Engineering Technology Training – Daily Questions Collection: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=18889712018 Registered Equipment Section – Daily Images Collection: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970
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Answer: Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, with particularly severe effects on conversion catalysts and methanation catalysts. Typically, the sulfur capacity limit for low-temperature shift and methanation catalysts is 0.5%, while that for nickel catalysts used in steam conversion is 0.3–0.5%; exceeding this limit leads to catalyst deactivation.
Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, with particularly severe effects on conversion catalysts and methanation catalysts. Typically, the sulfur capacity limit for low-temperature shift and methanation catalysts is 0.5%, while that for nickel catalysts used in steam conversion is 0.3–0.5%; exceeding this limit leads to catalyst deactivation.
Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, with particularly severe effects on conversion catalysts and methanation catalysts.
Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, with particularly severe effects on conversion catalysts and methanation catalysts. Typically, the sulfur capacity limit for low-temperature shift and methanation catalysts is 0.5%, while that for nickel catalysts used in steam conversion is 0.3–0.5%; exceeding this limit leads to catalyst deactivation.
Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, with particularly severe effects on conversion catalysts and methanation catalysts.
Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, with particularly severe toxic effects on conversion catalysts and methanation catalysts
Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process. The poisoning is particularly pronounced for conversion catalysts, low-temperature shift catalysts, and methanation catalysts. Typically, the sulfur capacity limit for low-temperature shift and methanation catalysts is 0.5%, while that for nickel catalysts used in steam conversion is 0.3–0.5%; exceeding this limit leads to catalyst deactivation.
Sulfides in hydrogen production feedstocks are toxic to a range of catalysts used in the hydrogen production process, and they also corrode equipment and pipelines; therefore, desulfurization is necessary.