A higher temperature in the top of the still column can increase glycol losses due to excessive vaporization. The boiling point of water is 212°F…
Category: Glycol Dehydration
When the number of absorber trays and lean glycol concentration are fixed, the dew-point depression of a saturated gas is a function of the glycol…
The lean glycol concentration leaving the reboiler can be lowered by contacting the glycol with stripping gas. Often, wet gas that is saturated with water…
Pressures above atmospheric in the reboiler can significantly reduce lean glycol concentration and dehydration efficiency. The still column should be adequately vented and the packing…
The reboiler temperature controls the concentration of the water in the lean glycol. The higher the temperature the higher the concentration, as shown in Figure…
The higher the concentration of the lean glycol the greater the dewpoint depression for a given glycol circulation rate and number of trays. Figure 8-9…
The temperature of the lean glycol entering the contactor has an effect on the gas dew-point depression and should be held low to minimize required…
The glycol and the gas do not reach equilibrium on each tray. A tray efficiency of 25% is commonly used for design. That is, if…
Contactor pressures have little effect on the glycol absorption process as long as the pressures remain below 3,000 psig. At a constant temperature the water…
At constant pressure, the water content of the inlet gas increases as the inlet gas temperature increases. For example, at 1,000 psia and 80°F gas…