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Hydrogen partial pressure

2008-08-12View Original

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This post was last edited by brainandrain on 2009-8-14 15:52. What is hydrogen partial pressure?
Reply #22008-08-12
The partial pressure of hydrogen sulfide in natural gas equals the volume fraction of hydrogen sulfide in natural gas multiplied by the total pressure of the natural gas!
Reply #32009-08-14
The hydrogen partial pressure can be simply understood as the pressure of hydrogen gas within the total gas pressure. In other words, if the total pressure of the system is set at 2.0 MPa and the hydrogen concentration is 80%, then the hydrogen partial pressure will be 2.0 × 80% = 1.6 MPa. If high-purity hydrogen is used, then the hydrogen partial pressure will equal the total system pressure. The higher the hydrogen partial pressure, the better. In simple terms, the hydrogen partial pressure is the flow rate of circulating hydrogen. The more hydrogen there is, the higher the purity, which allows for more effective removal of metal substances from the feed oil during the reaction. It also enables more efficient alkanes isomerization in the feed oil, and alkanes isomerization is something desired in hydrogenation reactions. However, in actual production, the cost of hydrogen also needs to be considered. The commonly referenced hydrogen partial pressure is 400–1000! The effect of reaction pressure is manifested through the hydrogen partial pressure. The hydrogen partial pressure in the system is determined by the operating pressure, hydrogen-to-oil ratio, purity of the recycled hydrogen, and the vaporization rate of the feed oil. Increasing pressure is beneficial for hydrogenation reactions. For aromatic hydrogenation reactions constrained by thermodynamic equilibrium, the effect of pressure is particularly significant. An increase in hydrogen partial pressure raises the saturation of aromatic compounds, thereby improving the performance of related products. A high hydrogen partial pressure prolongs the catalyst’s service life by reducing its coking rate. Therefore, the operating factor increases, and the cost of the catalyst decreases.
Reply #42015-04-02
Learned* haha: So the origin is here – hydrogen partial pressure
Reply #52015-04-02
I learned it! ! I don’t understand the manufacturing process: L:L:L
Reply #62015-07-24
This post was last edited by Rose from YPES on 2015-7-24 at 11:55. Learned something new – so the original source is here! Great insight ! The hydrogen partial pressure can be simply understood as the pressure of hydrogen gas within the total gas pressure. In other words, if the total pressure of the system is set at 2.0 MPa and the hydrogen concentration is 80%, then the hydrogen partial pressure will be 2.0 × 80% = 1.6 MPa. If high-purity hydrogen is used, then the hydrogen partial pressure will equal the total system pressure. What pressure is the system total pressure? ?

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