Frames has developed a complete range of glycol-based dehydration solutions to handle the most demanding conditions. By analyzing your gas composition and operating requirements, our team of engineering experts will design, build, and commission a complete drying solution to meet the gas demands of the downstream processes. Our glycol-based dehydration technology optimizes gas field
productivity by efficiently drying the gas stream. In addition, it protects equipment from corrosion and damage caused by ice crystals
(hydrates) that can form at relatively high temperatures.
Select from a range of glycols
Frames Glycol-based Gas Dehydration Systems use liquid desiccant technology to efficiently remove water from natural gas and carbon dioxide. Building on more than 30 years of industry experience, our engineers are able to specify the best glycol system to fit your requirements and optimize field performance. This includes using the common glycols diethylene glycol (DEG), tetraethylene glycol (TREG), and the more widely-used triethylene glycol (TEG).
Minimized energy consumption
Our glycol-based dehydration systems typically include efficient, energy-saving technology such as heat exchangers and the reuse of flash gas for stripping. Moreover, a smart balance between packing height, glycol purity, and glycol amount allows you to benefit from minimized utility consumption levels.
Low foaming and no need for chemical pH control
Foaming due to condensation of hydrocarbons usually causes glycol loss as well as reduced plant capacity. Our systems are designed to stop heavier hydrocarbons from condensing and forming foam at the top of the structured packing, thus minimizing
Frames systems are also carefully designed to operate at a low skin temperature of the reboiler heater bundle to prevent unwanted glycol degradation. This design feature eliminates the need to use chemicals to control fluctuations in system pH associated with the degradation of glycol.
Your Frames Glycol-based Dehydration Unit mixes lean, water-free glycol with wet natural gas in the top of an absorber (glycol contactor), to dry the gas by physical absorption.
This drying process occurs on the surface of structured packing, towards the bottom of the column. The dry natural gas then leaves
the top of the contactor column ready for use. The wet glycol, often referred to as “rich glycol”, is drawn off from the bottom.
From the contactor, the rich glycol is routed to the regeneration package for purification. Here it is first preheated using heat from
the reflux condenser at the top of the reboiler’s still column, along with heat from the lean/rich heat exchanger. The heated glycol then enters the flash vessel for the three-phase separation of gas, glycol and condensate. At this point it is also filtered to remove
any solid contaminates caused by corrosion, scaling or minor glycol degradation.
Afterwards, the warmed rich glycol is fed into the stripper (also known as a regenerator) which consists of a still column, an overhead condenser, and a reboiler. Here it is thermally regenerated to remove excess water and to regain the high glycol purity.
To optimize energy use, the hot clean and lean glycol is used to preheat the incoming rich glycol in the heat exchanger, before being
pumped up to operating pressure and cooled ready for reuse in the contactor.
- Efficient system for removing water from wet natural gas and CO2
- Protection of downstream processes against corrosion and clogging
- Range of glycols including DEG, TREG and the widely-used TEG
- Low energy design with efficient heat exchangers
- Full glycol filtering and regeneration system
- Low foaming design and no need for chemical pH control