Gas dehydration is an important part of oil and gas extraction plants. When extracted, natural gas includes large quantities of water, which can cause several problems like freezing and corroding pipes and equipment.
The main agent of the dehydration process is glycol, which holds water molecules through the absorption principle. To make this reaction happen, glycol and the hydrated gas are inserted into a pressure vessel.
Once the dehydration is complete, glycol is then sent to a heat exchanger to be regenerated and reused in the same cycle. The gas, on the other hand, takes a different route. It can be channeled through the pipeline, or sent back underground to the oilfield. The purpose in this case is to increase oil’s pressure and viscosity, to facilitate its flowing out of the well.
Whichever the destination of the gas, pressure vessels and heat exchangers play a fundamental role in this process. Cividac contributed to dehydration plants in many different scenarios, including offshore platforms, with very low temperatures and extremely severe climatic conditions.