How does a glycol reboiler work?

From the glycol gas contactor the cool wet glycol passes through a coil (reflux condenser) in the top of the reboiler still column. The coil cools the vapors leaving the still column and condenses the glycol vapors to liquid. The glycol liquid droplets gravitate back down the still column to the reconcentrator.

What is a glycol reboiler?

Lean, water-free glycol (purity >99%) is fed to the top of an absorber where it is contacted with the wet natural gas stream. The glycol removes water from the natural gas by physical absorption and is carried out the bottom of the column.

Why glycol is used for dehydration?

Purpose. The purpose of a glycol dehydration unit is to remove water from natural gas and natural gas liquids. Glycol dehydration units depress the hydrate formation point of the gas through water removal.

How does a glycol regeneration system work?

The dehydrated gas leaves the tower at the top and returns to the pipeline or goes to other processing units. The water-rich glycol leaves the tower at the bottom and goes to the reconcentration system. In the reconcentration system, the wet glycol is filtered of impurities and heated to 400 degF [204 degC].

What is the purpose of glycol?

In cooling systems, the primary purpose of glycol is to help the system stay as consistently cold as possible without freezing. When glycol is mixed with water, the freezing point of the water drops as low as -60 degrees Fahrenheit.

What is glycol used for offshore?

Monoethylene glycol (MEG) is widely used by the oil and gas markets in wellheads and pipelines to prevent hydrate formation at pipeline conditions. In offshore deepwater gas production facilities, where the exposure to lower temperatures in subsea pipelines is common, MEG is used for hydrate inhibition.

What is another name for glycol?

ethylene glycol
Also called ethylene glycol, ethylene alcohol. a colorless, sweet liquid, C2H6O2, used chiefly as an automobile antifreeze and as a solvent. Also called diol.

What types of glycol are there?

There are two main types of glycol used for this function: ethylene and propylene.