Process conditions, gas composition and dew point requirements are the starting points of all our designs
Glycols commonly used in the industry include diethylene glycol (DEG), triethylene glycol (TEG) and tetraethylene glycol (TREG), with TEG being the most popular variant. This technology is able to achieve the water content requirements that will help to prevent the aforementioned challenges.
Wet gas is brought into contact with glycol in the contactor column, where sufficient contact area is created by using mass transfer internals. The combination of process conditions, gas composition and dew point requirements is the starting point for the design of every system. Taking into account these parameters the amount of internals for the column are selected, as well as the glycol flow and purity.
After absorbing the water from the gas stream, the glycol needs to be regenerated for reuse in the closed-loop system. The core process in the regeneration loop is the boiling off of water from the glycol in a reboiler. This process is determined by the glycol purity required, the type of treatment for waste streams, and the available energy sources component.
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Our approach to glycol-based gas dehydration
Over the past years, we have managed to elevate this conventional technology to a higher level. Gaining knowledge with every package supplied, we have reached a level of experience which enables us to provide solutions for process challenges such as fouling or foaming.
One of the major benefits for our clients is modularization, which minimizes the number of interfaces throughout project execution. Most importantly, this also reduces the amount of work required on site. With the right balance between packing height, glycol purity and glycol amount, overall utility consumption levels can be kept relatively low.