How to address the high CO content in new hydrogen
Thread Content
Dear teachers: The fresh hydrogen used by our company is supplied from external sources. Currently, due to the requirements of other projects, the CO content in this fresh hydrogen is required to be at least 5 μL·L-1; however, the actual CO content is 17 μL·L-1. Please advise on what methods can be used to resolve this issue. New hydrogen is hydrogen produced from natural gas.
Such a high purity of hydrogen is already sufficient; will it have a significant impact on your reaction? The higher your requirements, the greater the equipment needed and the larger the investment. First, examine the impact on your response, whether there are many side effects, and how significant the effect of calories is. Try to avoid unnecessary expenses.
Reply to 2# NSHYXFWB: Thank you for your guidance. The purity of the hydrogen supplied to our device is 99.9%, but the CO content is above the specified limit; noble metal catalysts require as low a CO content as possible. I’ve heard that hydrogen produced from natural gas can be processed through certain CO removal facilities, but I’m not familiar with the details. Could you provide some information on this? By adding such facilities, how much will the cost increase? Thank you.
Simple pressure swing adsorption can be considered, and it can be entrusted to a professional design firm. I can give you some advice.
For this requirement, pressure swing adsorption is the most suitable option, as this technology is highly mature
A pressure swing adsorption unit can be installed; this unit uses a one-step process for CO adsorption. This process is economical and simple to operate, with specialized adsorbents being used, such as molecular sieves loaded on copper.
Reply to 6# Broadband user: It can only be solved with PSA, but PSA seems to be able to reduce the level only to 10PPM.
Reply to 7# MEDAL: I spoke with the manufacturers that produce hydrogen today, and they said that pressure swing adsorption cannot achieve such low CO levels; they intend to use methanation to reduce CO levels. I would like to ask whether pressure swing adsorption can actually meet our requirements, and whether there are any better alternatives.