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Title: Trouble Shooting Gas Dehydrators
Author: George S. Leachman
Source: 1986 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1986
Abstract: Since the beginnings of the Natural Gas Industry, the removal of water vapor (or dehydration) has been found necessary to properly operate the systems required to produce, distribute and utilize this commodity. It was found that water (which is always present in produced gas) and hydrocarbons react to form gas hydrates. These compounds exhibit much higher freezing points than pure water itself. Excellent early research showed that these hydrates only formed when free (or liquid phase) water was present in the system. Thus, it was discovered that hydrate formation, which blocked flow lines when formed, could be prevented if the water vapor content of gas was lowered to a point such that cooling could not result in water condensing to liquid. There are a large number of methods to remove water vapor from gas streams, but we have found through usage that three ways offer the best results. They are:

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