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Oil and Gas Transmission Products
Improve gas gathering and compression system performance
Transporting natural gas requires a series of systems working together – including gas gathering and gas compression sites. We offer strong technical support and a range of products to keep these systems running safely, efficiently and reliably.
Our ethylene glycol (EG)-based coolants, propylene glycol (PG)-based coolants, specialty dehydration fluids, heat transfer fluids and cleaning solutions can help:
With fluids made of virgin materials.
Against corrosion and degradation.
Including innovative dehydration fluids to reduce BTEX emissions.
Find the optimal product for your unique needs
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GAS DEHYDRATION
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INDUSTRIAL COOLING
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OTHER GAS TRANSMISSIONS
Swipe to Scroll
| Needs | Products |
|---|---|
| pH control and corrosion inhibition | NORKOOL DESITHERM™ Fluid |
| High salt tolerance | NORKOOL DESITHERM™ HS Fluid |
| Improved dew point capacity | PURDRY™ 100 Fluid |
Swipe to Scroll
| Needs | Products |
| System cleaning and degreasing | NORKOOL™ Cleaning Solutions |
| Waste heat recovery | Heat transfer fluids |
In recent years, a new family of coolants has been introduced to the industry called Extended Life Coolants (ELC), or Long-Life Coolants (LLC). These fluids were developed for use in heavy equipment diesel engines, such as payloaders, bulldozers and other over-the-road vehicles.
Using ELC or LLC products in your gas compressor system can lead to hard-to-remove buildup in your equipment, reduced heat transfer and frequent system changes.
Why? These products were designed for aluminum parts in diesel engines, and they contain a low level of silicate inhibitor to protect the surface of the aluminum. When used in a gas compressor system, the silicate coating can react with the glycol coolant to form a silicate gel. The gel reduces heat transfer and builds up over time. A silicate scale can even form from low flow rates if the fluid isn’t replaced regularly, and the system cleaned. This scale further reduces heat transfer and is extremely hard to remove, leading to costly down time. If not addressed, the buildup can cause the system to overheat and the engine to fail.
Consider the following example when comparing heat transfer loss:
A 1-inch-thick piece of steel with 1/16-inch-thick silicate scale buildup (the width of most business cards) has the same heat transfer characteristics of a 4-inch piece of steel. That is to say that your heat transfer is 4 times less efficient – a significant loss with just a small level of buildup.
Industrial heat transfer fluids like AMBITROL™ and NORKOOL™ SLH do not contain silicates. The specially designed inhibitor package in these products works by reacting directly with the metal surface, meaning no additional thickness on the metal. The inhibitors are fully compatible with glycol, and if properly maintained Dow heat transfer fluids can offer twenty years or more of effective service. Dow’s analytical services are available to recommend the correct inhibitor if your system drops below the protective level and can be added without shutting down the system or replacing the coolant.
As the temperature drops and winter sets in, it’s critical to check the glycol concentration in your system. This is an important measurement to ensure freeze protection.
Coolant suppliers typically provide established minimum and maximum concentrations to help optimize performance, including protecting against freeze. Those for NORKOOL™ and AMBITROL™ Industrial Coolants can be found here.
Before winter months, it’s important to confirm the concentration and associated freeze point of your coolant is adequate for your location. The freeze point should not be higher than your region’s low temperature. Glycol concentration and freeze point can be measured with a handheld refractometer or on a coolant analysis from Dow. You can also refer to the chart included in the NORKOOL and AMBITROL Engineering Guides for a complete list of concentration and associated freeze points.
In the instance your concentration is too low, or freeze point is higher than your region’s low temperature, the recommendation is to increase concentration by adding glycol to the system. However, operators need to keep in mind freeze protection is reduced when glycol concentrations exceed 70 percent.
Why should you check freeze point instead of burst point?
Freeze point refers to the temperature the first ice crystal forms. The burst point, a much lower temperature, is the point the fluid will expand and cause piping to burst. Confirming your coolant is at the appropriate concentration to protect against freezing will mean little concern about pipes bursting, even if your location shuts down during cold winter months.
Are you protected if your system shuts down?
There is low risk of your system freezing during normal, continuous operation if glycol concentration is appropriate. Glycol concentration should help protect from freeze even when the system is shut down. Although there are two recommendations to consider if this happens:
- Do not drain the coolant. Exposing the system to air can lead to immediate and severe corrosion.
- Circulate the system on occasion, if possible, to avoid sediment from collecting.
Take advantage of services to optimize performance
Complimentary lab and field services can help you further optimize performance. As a Dow customer, you’ll gain access to:
- Routine analysis of dehydration fluid and coolant samples, including corrosion rate for coolants.
- Recommendations to help maintain fluid health.
- Support for system design and troubleshooting challenges.
How can you get more out of your gas dehydration system?
On-demand videos from our technical team will help you troubleshoot common challenges at dehydration units. These videos cover:
- Introduction to gas dehydration and addressing three common challenges–managing pH, controlling dew point and handling high salts.
- Case study on managing pH, including a unit that maintained pH above 7 for over a year without inhibitor additions.
- Case study on controlling dew point, including operating reboilers at higher temperatures during hot summer months.
- Case study on handling high salts, including three units who have overcome the challenge.
NORKOOL DESITHERM™ HS Specialty Fluid
Keep salt buildup at bay with NORKOOL DESITHERM™ HS. Read to learn how shutdowns were reduced from 1-2x/month to no shutdowns for over a year.
NORKOOL DESITHERM™ HS Specialty Fluid
Reduce corrosion and enhance separation performance with NORKOOL DESITHERM™ HS. Read to learn how this solution helped reduce corrosion by 6x compared to uninhibited TEG.
Resources
NORKOOL™ Coolants: See product features, applications and guidance for maintenance and testing.
Tips for Coolant Care: Learn how to reduce downtime and lower total cost at your gas compression system.
Cleaning Solutions Guide: Explore the three-part system to clean compressor engines, dehydrators, line heaters and cogeneration engines.
Let’s work together to understand your needs and find the optimal solution.
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