What are the standards for heavy metal content in catalytic cracking?
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This post was last edited by Bingfeng Xueshang on 2015-10-7 at 15:48. What are the standards for the content of heavy metals in catalytic cracking? The main indicators are calcium, sodium, nickel, molybdenum, and iron; what are the maximum limits for each? ? ? There are rewards for the friends who help! Oh! http://bbs.hcbbs.com/thread-1472092-1-1.html
Are you referring to the common metals and heavy metals in the feedstock for catalytic cracking, or in the products of catalytic cracking, or in the catalysts used for catalytic cracking? Catalysts, in turn, are divided into new catalysts, raw catalysts, regenerated catalysts, balance catalysts, etc. There are also auxiliary catalysts such as oxidizers and passivators. Is it possible that what you are asking about is the content of heavy metals in the equipment of catalytic cracking units? Such as pipelines, valves, reactors, etc. Literally speaking, the term \"catalytic cracking\" does not contain any metals.
Urgently request the return of the raw materials; a metal analysis needs to be conducted. Based on the data obtained from this analysis, how can it be determined whether the metal content in these raw materials exceeds the allowed limits?
It is generally determined based on the H2/CH4 ratio; as for the specific numerical values, it seems that such data are only collected when calculating pollution indices! I also replied to your post!