In the oil and gas world, finding the sweet spot between efficiency and reducing our environmental footprint is crucial. That’s where vapor recovery units, or VRUs, come into play. These systems capture valuable vapors that would otherwise be vented or flared during production and storage, turning them into resources we can actually use. So, how do these VRUs work their magic? Let’s dive in and find out!
During oil and gas production and storage, hydrocarbons naturally turn into vapor. When pressure inside storage tanks starts to rise, VRUs step in to catch these vapors before there is a need to vent or flare. It all kicks off when sensors notice that vapor pressure is climbing. Once it hits a certain level, the system automatically opens valves to funnel the vapor through a network of pipes and into the VRU’s compressor.
Thanks to this automated setup, vapor collection runs smoothly and continuously—no manual intervention needed.
Once the vapor is captured, the next step is compression. Vapors are gaseous and need to be compressed to reduce their volume, making them easier to store and transport. The VRU’s compressor increases the vapor’s pressure, condensing it slightly and reducing its volume.
Compression has two important functions:
In some operations, multiple stages of compression may be necessary, especially in cases where the vapor volume or pressure is high.
Once the vapor is compressed, it typically is cooled through an integrated after cooler. This step is crucial because it lets us separate different hydrocarbons based on their boiling points. As the vapor cools down in a heat exchanger, heavier hydrocarbons like propane and butane turn into a liquid.
This liquid is then collected in a separator, making sure we recover these valuable hydrocarbons for processing or sale.
After cooling, the vapor moves into a phase separator, which splits the liquid hydrocarbons from the gases. This step is key to making sure we get the most out of both the liquid and gas components.
The separator makes sure we recover and utilize every valuable bit of the vapor efficiently.
The last part of the VRU process is all about handling the recovered gas, which is usually methane. This gas is quite valuable and can be put to good use in several ways:
Reinjection into operations: The gas can be fed back into the production system to power engines, compressors, or other machinery, which helps cut down on the need for external resources.
In the end, the VRU effectively captures, compresses, cools, and separates both liquid and gas hydrocarbons, turning what might otherwise be waste into valuable resources.
At Flogistix, we specialize in providing advanced vapor recovery solutions designed to enhance operational efficiency and maximize profitability in oil and gas operations. Our vapor recovery units are engineered to capture the highest possible volume of hydrocarbons, ensuring nothing goes to waste.
Don’t let valuable hydrocarbons escape. With Flogistix, you can capture more, reduce emissions, and increase profitability. Contact us today to learn more about our vapor recovery solutions and how we can help your operation succeed.
