What are the acid gas concentration and pH value in the regeneration tower of the MDEA decarburization process in natural gas liquefaction plants?
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What are the acid gas concentration and pH value in the regeneration tower of the MDEA decarburization process in natural gas liquefaction plants? Has anyone done any testing and analysis? I would appreciate it if those who have experience could share their insights.
In the MDEA decarbonization process, the acid gas concentration and pH value in the regenerator vary depending on the specific operating conditions and design requirements. Typically, the acid gas in the regenerator tower consists mainly of CO2 and possibly H2S; its concentration can be adjusted through design to achieve a specific decarburization effect. As for the pH value, the MDEA solution is weakly alkaline, with its pH typically remaining between 9 and 10. However, the specific values still need to be determined based on actual operating data. It is recommended to consult the specific device operation manual or contact technical support for detailed information. .
The carbon dioxide concentration will be very high, probably over 80
I’m wondering if any analysis has been done specifically – how many are there in reality on site?
The carbon dioxide level after leaving the tower can exceed 90, but it is not the result of MDEA decarbonization using natural gas; rather, it comes from coke oven gas. You can take a look at the PFD for decarbonization.