Low-temperature methanol washing
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To explain the process first: the gas is directed to the coil heat exchanger, from there it goes to the liquid separation tank and then to the absorption tower. There is methanol sprayed in front of the heat exchanger, in a quantity of about 2 cubic meters. When the inlet air volume was reduced by half, the liquid level in the separator tank suddenly increased from 50 to 80. Could the reason for this be analyzed?
It seems you also have two furnaces; stopping one of them when the other is in use isn’t easy to handle. In this case, is your system pressure stable?
The system pressure doesn’t fluctuate much; the liquid level rises to 80% in just five minutes
Possible reasons: 1. A sudden reduction in flow rate led to a significant drop in the temperature of the process gas (while the flow rates of the cold streams leaving the system, such as CO2 and exhaust gases, did not decrease), resulting in the condensation of CO2 and an increase in the liquid level； This is the most likely possibility. 2. Check whether the outlet separator of the previous system, in case of any transformation, contains liquid
The second option is somewhat possible, but the temperature will drop if there is liquid present. The inlet temperature hasn’t changed. The first impression isn’t that, because it’s an inlet liquid separation tank.