Control parameters for liquefied gas at the top of the absorption stabilizer?
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Friends present, what are the key parameters generally controlled for regulating the liquefied gas at the top of the absorption and stabilization system? ? As I understand it, the control of the stabilizer tower is based on the RVP of gasoline and the C5 content in liquefied gas – is that correct? ? If not, then how is the site controlled? ? ?
Does the stable gasoline at the bottom of that tower control RVP? ? ? ? ? Thank you
The quality of the liquefied gas at the top of the tower is controlled through reflux and the top temperature; the control parameter here is C5
The content of C5 and above should not exceed 1.5% (v/v), while the content of C2 and below should not exceed 1% (v/v). Changing the feed position in the stabilizer tower can also help control the level of C5 and above in the liquid hydrocarbons as well as the vapor pressure of the stabilized gasoline
The metrics vary from factory to factory
The proportion of C2 components in liquefied gas shall not exceed 3%, and the proportion of components with a carbon number higher than C5 shall not exceed 1%. The control methods are naturally the temperature of the desorption tower and the pressure in the stabilization section
Depending on the conditions of each facility, each company has its own standards; for our coking process, the limits are C1+C2 ≤ 3%, and C5 ≤ 5%