How is the density of a catalyst expressed?
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What do the words related to catalyst density in the figure represent? Catalyst bulk density, catalyst void fraction, catalyst volume, catalyst loaded volume – what are the conversion relationships between them? If understood in terms of bulk density, porosity, catalyst bed volume, and loading volume, the calculation relationships provided by the HYSYS reforming module do not match. Thank you for answering my questions
Correction: It was a typo for porosity; I meant void ratio. It would be best to write a formula that can be used to verify the relationships in the graph
If it’s convenient for you, go and ask at the First Research Laboratory of the Beijing Research Institute of Petrochemical Technology; they have a laboratory specialized in catalyst characterization.
Bed porosity = Volume of the catalyst itself * Apparent density / Bulk density
How to measure the pressure drop across the catalyst bed? Please let me know
These are all very basic questions: catalyst bulk density – the density of the catalyst, which includes the framework, the pores within the particles, and the spaces between particles. Refer to: \"Reaction Engineering\" by Li Shaofen, 2nd edition； \"Chemical Reaction Engineering\", Zhu Bingchen, 4th edition. Catalyst void fraction: the proportion of void space within a catalyst; it can be measured experimentally or estimated. Refer to: \"Reaction Engineering\", Li Shaofen, 2nd edition ； \"Chemical Reaction Engineering\" by Zhu Bingchen, 4th Edition ； \"Principles of Chemical Engineering\" by Chen Minheng; catalyst volume – the volume of a catalyst (due to differences between English-Chinese and Chinese-English translations, please refer to the help files for the definition here). For the exact definition, see the help documents. catalyst loaded volume The volume of catalyst filled (which can be considered as the bed volume)