What property methods do people use when simulating petroleum components?
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This post was last edited by WoAiMaoMaoRan on 2015-12-23 at 08:06. In the ASPEN help section, CHA-SEA GRAYSON BK10 SRK P-R – all of these can be used. I wonder if there are any experts who have conducted a thorough comparison of the usage conditions and simulation accuracy of these various property prediction methods? Or still
Generally, GS is used for hydrogen-rich conditions, BK10 for low pressure, and GS or CS for high pressure; SRK and PR are used for other cases. The specific usage conditions can be found in the help documentation, and ultimately, it’s the experimental data that determines the appropriate choice.
Hello, I came across an article explaining absorption stability simulation, which contained the statement: \"When the light hydrocarbon content is high, SRK should be used for the top 4 trays.\" Why is that?
1. When the light hydrocarbon content is high, SRK, PR, etc., can all be used. 2. The top 4 layers of plates should be specific to his own tower, as these upper layers contain a high proportion of light hydrocarbons.
Uh, thank you. The article states that Grayson is used for the desorption tower, and it mentions that SRK is used for the top 4 layers when the content of light hydrocarbons is high. In other words, for the equilibrium calculations of light hydrocarbons such as liquefied gas and dry gas, SRK and PR are better than Grayson, right? Then why not use SRK for the entire tower? (The function of the desorption tower is to vaporize the C2 compounds in the crude gasoline at the top of the tower; at the bottom of the tower lies the crude gasoline containing liquefied gases (C3, C4))