Help translate “less than 200 ppm”
Thread Content
This does not seem to be a problem at the hydrogen levels required for removing low levels of impurities (less than 200 ppm). Does \"less than 200 ppm\" refer to the concentration of impurities or the concentration of hydrogen?
Low-level impurities – roughly less than 200 ppm.
“The amount of hydrogen required to remove impurities in low concentrations does not seem to be a problem. ” In other words, there is an adequate amount of hydrogen available to remove impurities. Less than 200 ppm should be the content of impurities.
““This does not seem to be a problem.” This is the main sentence. At hydrogen levels needed for removal of low levels of impurities (less than 200 ppm), this refers to the condition of less than 200 ppm; low levels of impurities mean that hydrogen needs to have impurities removed to a level of less than 200 PPM, and this isn’t a problem
This post was last edited by wangkai6191 on 2010-6-4 08:21. I’ve also tried it: This doesn’t seem to be a problem at the hydrogen levels required for removing low levels of impurities (less than 200 ppm). Using hydrogen to remove impurities is not an issue!
Thank you, I also think it should be the impurity content
Less than 200 ppm is the level of impurities. In other words, after removing the impurities, the hydrogen gas contains less than 200 ppm of impurities, which indicates that the purity of the hydrogen gas is very high; it isn’t difficult to purify hydrogen gas to such a high degree of purity! !
“Using hydrogen to remove impurities – PSA, molecular sieves, MDEA, etc., can all remove impurities from gases, but their performance is far inferior to that of hydrogen. In actual production: Hydrogen is used as a regeneration gas to remove impurities from the molecular sieve; the translation is correct and appropriate. It’s grammatically incorrect.
I believe it should be translated as follows: The H2 grade, which is used to remove impurities at low levels (200 ppm), is no problem. In other words, there’s no need to worry about the grade of H2; 200 ppm refers to the impurity content of the substance that has been removed.
Reply to 8# zhuazhe2008: This is for the hydrogenation purification of other materials, not the purification of hydrogen gas