Are there any side effects if the low-temperature methanol washing temperature is too low? ? ? ! ! !
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The temperature of the converted gas entering the scrubber after heat exchange is -28 degrees, the system pressure is 4.6MP, the temperature of lean methanol entering the scrubber is -55 degrees, and the temperature in the middle of the T3 tower is -70 degrees. The temperature at the bottom of the T3 tower is -68 degrees. The system operates stably and CO2 can be controlled easily. Is there any impact if the temperature is too low? ? ? ? ?
The melting point of methanol is -97°. Of course, do not reach this temperature. Also, methanol has a low viscosity. However, if the temperature is too low and the viscosity increases, it will affect the absorption effect. The data you reported for your unit’s process flow are all designed by the design institute. Normally, the values are higher than the theoretical values.
As long as the design and production requirements can be met, it will be fine. If the temperature is too low, the cooling capacity and power consumption will be high.
Under design conditions, low temperature can reduce circulation volume and reduce power consumption. The key is to balance the cooling capacity.