Abstract:

The reasons for operation fluctuation in the ethanol amine solvent regeneration tower of the sour gas desulphurization system were analyzed. The flood phenomena increased the loss of diethanol amine and affected the quality of dry gas and liquefied gas. Based on the analysis, the following operation parameters were required to solve flood problem: the steam temperature from the bottom of the regeneration tower was controlled at 115-120 ℃, the heavier component in liquefied gas and the dry gas were reduced to less than 1.5% and 2%, respectively, the pressure of flash tank of rich diethanol amine solution was set at 0.30 MPa, the load of filtered diethanol amine was adjusted to 3 t/h. These measures make the operation stable, and assure the qualities of dry gas and LPG products. The loss of diethanol amine is reduced and the economic benefits of enterprises are increased.

Key words: desulfurization system, regeneration tower, fluctuation, optimization