Effect of arsenic content on platinum reforming catalysts
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Which expert would like to talk about the impact of arsenic content on platinum reforming catalysts, and what level of arsenic content is considered optimal?
Arsenic and platinum react to form PtAs2, which directly leads to the loss of the metallic functionality of the reforming catalyst, resulting in permanent deactivation. It is generally required that the arsenic content in the reformation feed be <1ppb.
Regarding the issue of arsenic in reforming feedstock oil, it would be best for the original poster to go to the reforming research laboratory at the Beijing Research Institute of Petrochemical Technology to find out more in detail. Additionally, the analysis center at the Petroleum and Chemical Science Research Institute also has extensive expertise in the analysis of arsenic in oils; the former academician Lu Wanzhen once led research on arsenic in oils. Most crude oils in the world have extremely low levels of arsenic, but the Daqing crude oil in China is a very special case, with very high levels of arsenic. This is why China pays great attention to arsenic impurities in its reforming processes and has effective solutions to address the problem of arsenic poisoning catalysts.
Arsenic content must be strictly controlled; levels exceeding 1 PPb can cause permanent deactivation of the catalyst