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Title: Dry Bed Dehydration
Author: Robert E. Trent
Source: 1977 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1977
Abstract: Dry bed dehydration is a relatively new unit operation in the Chemical Industry. For all practical purposes, it has only been used since the mid 1930s. The first major application for dry bed dehydration was in the dehydration of natural gas so that it could be transported by pipeline without the formation of hydrates. Normally natural gas must be dried to a level of approximately 7 pounds of water per million standard cubic feet to be assured that it can be transferred with no hydrate formation. Later, as the value of petrochemicals rose, it became economical to remove the heavier hydrocarbons of natural gas by refrigeration and sell these as refinery feedstocks. These ethane plus recovery processes required cryogenic applications where temperatures could reach as low as -150 F. The only way that such cryogenic operations can operate economically is to have a dry feed which eliminates ice fouling.

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