We have years of experience in the gas dehydration sector. Whether it’s ethylene glycol dehydration or TEG dehydration, Melland Consulting has the solutions you need for success.

Gas Dehydration

Gas dehydration is a process designed to remove water from natural gas and natural gas liquids. The glycols used to remove water from natural gas and liquid gas are ethylene glycol and triethylene glycol (TEG). We offer engineering and consulting services for both of these methods.

To prevent problems for downstream processing and equipment, water must be removed from natural gas. Melland Engineering and Consulting can help with the planning and design of gas dehydration equipment and systems to help you meet pipeline quality specifications.

Ethylene Glycol Dehydration

Ethylene glycol is typically injected at the inlet of exchangers to prevent the formation of ice or hydrates in gas processing units such as JT or refrigeration units.  The combination of EG and cooling the gas can greatly reduce the amount of water saturating the natural gas stream.  The EG is recovered in a separator and can be regenerated by heating it up in a reboiler unit.

TEG Dehydration

Triethylene Glycol is the most commonly used glycol for natural gas dehydration. It is used to remove water from natural gas by countercurrent contact in a TEG absorber column.  The TEG can then be regenerated in a reboiler unit. Using TEG to remove water from natural has as many benefits – it’s easily regenerated to a higher degree of purity, vapor losses are minimal, and operating costs are lower.

Molecular Sieve Dehydration

Molecular sieve, or zeolite, is a material with very small pores of uniform size formed as part of a crystalline structure.  This allows for very specific size/shape discrimination and large surface area for the adsorption of molecules to ionic sites in the structure.  3A and 4A molecular sieve is typically used in the adsorption of water from natural gas, and can produce “bone dry” gas (water < 1ppm) with proper design.  The molecular sieve can be regenerated by heating up the material with hot gas.  This is also known as temperature swing adsorption (TSA) process.

Mid-Stream Gas Consulting & Engineering

Natural gas dehydration with TEG, Molecular Sieve or Ethylene Glycol are effective methods to remove water to make natural gas safe to transport, sell and process. Melland Engineering and Consulting is ready to help you find the safest and most effective gas dehydration systems that meets your expectations. Contact us today and let us see how we can help.