Water content in the amine solution system? ? ? ?
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In normal production, does the water content in the amine solution system increase or decrease? I think it will increase, because as production proceeds, the water generated in the hydrogenation reactor and the Claus reactor is carried into the quench tower. If the temperature at the top of the quench tower is not properly controlled, this water will end up in the amine solution, causing it to accumulate within that system!
Under normal operation, when the conditions are stable, the amine solution concentration should remain unchanged, as the steam entering the absorption tower is in a saturated state and it remains saturated upon exiting the tower; unless the conditions are unstable and liquid is carried in the exhaust gas: handshake
The exhaust gas leaving the emergency cooling tower is at 40 degrees, with very little saturated steam present. In addition, an amine concentration analysis is carried out on the absorbent liquid; if there is a significant deviation in concentration, adjustments can be made during the preparation of the solvent.
Under normal conditions, the water content in the amine solution should be reduced. Since the acidic gas coming out of the regeneration tower is usually cooled to 40°C before being sent to the sulfur recovery unit, some water inevitably gets carried along in this gas. Over time, the amount of water in the amine solution gradually decreases; therefore, it is necessary to replenish water into the amine solution on a regular basis.